From e7030c4bf59e8e148822c50ae1a5896c604c38c1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 3 Mar 2017 11:41:52 +0200 Subject: [PATCH 01/57] all: update light logs (and a few others) to the new model --- core/blockchain.go | 2 - eth/handler.go | 2 +- eth/peer.go | 2 +- ethstats/ethstats.go | 38 +++---- internal/debug/api.go | 7 +- internal/debug/flags.go | 6 +- internal/debug/trace.go | 5 +- internal/ethapi/api.go | 54 +++++---- les/backend.go | 2 +- les/fetcher.go | 35 +++--- les/handler.go | 68 +++++------ les/odr.go | 33 +++--- les/odr_requests.go | 245 ++++++++++++++++++++-------------------- les/peer.go | 17 ++- les/server.go | 5 +- les/serverpool.go | 20 ++-- light/lightchain.go | 30 ++--- light/odr_util.go | 6 +- light/state.go | 6 - light/state_object.go | 13 --- light/txpool.go | 25 +--- metrics/metrics.go | 5 +- 22 files changed, 285 insertions(+), 341 deletions(-) diff --git a/core/blockchain.go b/core/blockchain.go index 88ba76bc74..2a59bb2e7c 100644 --- a/core/blockchain.go +++ b/core/blockchain.go @@ -1016,12 +1016,10 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) { case SplitStatTy: events = append(events, ChainSplitEvent{block, logs}) } - stats.processed++ stats.usedGas += usedGas.Uint64() stats.report(chain, i) } - go self.postChainEvents(events, coalescedLogs) return 0, nil diff --git a/eth/handler.go b/eth/handler.go index a7f4be0b6a..ade8f77192 100644 --- a/eth/handler.go +++ b/eth/handler.go @@ -308,7 +308,7 @@ func (pm *ProtocolManager) handle(p *peer) error { // main loop. handle incoming messages. for { if err := pm.handleMsg(p); err != nil { - p.Log().Debug("Message handling failed", "err", err) + p.Log().Debug("Ethereum message handling failed", "err", err) return err } } diff --git a/eth/peer.go b/eth/peer.go index 443463b8c4..6884fee8e8 100644 --- a/eth/peer.go +++ b/eth/peer.go @@ -187,7 +187,7 @@ func (p *peer) SendReceiptsRLP(receipts []rlp.RawValue) error { return p2p.Send(p.rw, ReceiptsMsg, receipts) } -// RequestHeaders is a wrapper around the header query functions to fetch a +// RequestOneHeader is a wrapper around the header query functions to fetch a // single header. It is used solely by the fetcher. func (p *peer) RequestOneHeader(hash common.Hash) error { p.Log().Debug("Fetching single header", "hash", hash) diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index d09431d871..7b3a3439ee 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -95,13 +95,13 @@ func (s *Service) Start(server *p2p.Server) error { s.server = server go s.loop() - log.Info(fmt.Sprint("Stats daemon started")) + log.Info("Stats daemon started") return nil } // Stop implements node.Service, terminating the monitoring and reporting daemon. func (s *Service) Stop() error { - log.Info(fmt.Sprint("Stats daemon stopped")) + log.Info("Stats daemon stopped") return nil } @@ -130,7 +130,7 @@ func (s *Service) loop() { } conn, err := websocket.Dial(url, "", "http://localhost/") if err != nil { - log.Warn(fmt.Sprintf("Stats server unreachable: %v", err)) + log.Warn("Stats server unreachable", "err", err) time.Sleep(10 * time.Second) continue } @@ -138,7 +138,7 @@ func (s *Service) loop() { out := json.NewEncoder(conn) if err = s.login(in, out); err != nil { - log.Warn(fmt.Sprintf("Stats login failed: %v", err)) + log.Warn("Stats login failed", "err", err) conn.Close() time.Sleep(10 * time.Second) continue @@ -147,12 +147,12 @@ func (s *Service) loop() { // Send the initial stats so our node looks decent from the get go if err = s.report(out); err != nil { - log.Warn(fmt.Sprintf("Initial stats report failed: %v", err)) + log.Warn("Initial stats report failed", "err", err) conn.Close() continue } if err = s.reportHistory(out, nil); err != nil { - log.Warn(fmt.Sprintf("History report failed: %v", err)) + log.Warn("Initial history report failed", "err", err) conn.Close() continue } @@ -163,11 +163,11 @@ func (s *Service) loop() { select { case <-fullReport.C: if err = s.report(out); err != nil { - log.Warn(fmt.Sprintf("Full stats report failed: %v", err)) + log.Warn("Full stats report failed", "err", err) } case list := <-s.histCh: if err = s.reportHistory(out, list); err != nil { - log.Warn(fmt.Sprintf("Block history report failed: %v", err)) + log.Warn("Requested history report failed", "err", err) } case head, ok := <-headSub.Chan(): if !ok { // node stopped @@ -175,10 +175,10 @@ func (s *Service) loop() { return } if err = s.reportBlock(out, head.Data.(core.ChainHeadEvent).Block); err != nil { - log.Warn(fmt.Sprintf("Block stats report failed: %v", err)) + log.Warn("Block stats report failed", "err", err) } if err = s.reportPending(out); err != nil { - log.Warn(fmt.Sprintf("Post-block transaction stats report failed: %v", err)) + log.Warn("Post-block transaction stats report failed", "err", err) } case _, ok := <-txSub.Chan(): if !ok { // node stopped @@ -194,7 +194,7 @@ func (s *Service) loop() { } } if err = s.reportPending(out); err != nil { - log.Warn(fmt.Sprintf("Transaction stats report failed: %v", err)) + log.Warn("Transaction stats report failed", "err", err) } } } @@ -215,16 +215,16 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { // Retrieve the next generic network packet and bail out on error var msg map[string][]interface{} if err := in.Decode(&msg); err != nil { - log.Warn(fmt.Sprintf("Failed to decode stats server message: %v", err)) + log.Warn("Failed to decode stats server message", "err", err) return } if len(msg["emit"]) == 0 { - log.Warn(fmt.Sprintf("Stats server sent non-broadcast: %v", msg)) + log.Warn("Stats server sent non-broadcast", "msg", msg) return } command, ok := msg["emit"][0].(string) if !ok { - log.Warn(fmt.Sprintf("Invalid stats server message type: %v", msg["emit"][0])) + log.Warn("Invalid stats server message type", "type", msg["emit"][0]) return } // If the message is a ping reply, deliver (someone must be listening!) @@ -235,7 +235,7 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { continue default: // Ping routine dead, abort - log.Warn(fmt.Sprintf("Stats server pinger seems to have died")) + log.Warn("Stats server pinger seems to have died") return } } @@ -244,12 +244,12 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { // Make sure the request is valid and doesn't crash us request, ok := msg["emit"][1].(map[string]interface{}) if !ok { - log.Warn(fmt.Sprintf("Invalid history request: %v", msg["emit"][1])) + log.Warn("Invalid history request", "msg", msg["emit"][1]) return } list, ok := request["list"].([]interface{}) if !ok { - log.Warn(fmt.Sprintf("Invalid history block list: %v", request["list"])) + log.Warn("Invalid history block list", "list", request["list"]) return } // Convert the block number list to an integer list @@ -257,7 +257,7 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { for i, num := range list { n, ok := num.(float64) if !ok { - log.Warn(fmt.Sprintf("Invalid history block number: %v", num)) + log.Warn("Invalid history block number", "number", num) return } numbers[i] = uint64(n) @@ -269,7 +269,7 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { } } // Report anything else and continue - log.Info(fmt.Sprintf("Unknown stats message: %v", msg)) + log.Info("Unknown stats message", "msg", msg) } } diff --git a/internal/debug/api.go b/internal/debug/api.go index 01126b41bf..8b7693f6a4 100644 --- a/internal/debug/api.go +++ b/internal/debug/api.go @@ -22,7 +22,6 @@ package debug import ( "errors" - "fmt" "io" "os" "os/user" @@ -111,7 +110,7 @@ func (h *HandlerT) StartCPUProfile(file string) error { } h.cpuW = f h.cpuFile = file - log.Info(fmt.Sprint("CPU profiling started, writing to", h.cpuFile)) + log.Info("CPU profiling started", "dump", h.cpuFile) return nil } @@ -123,7 +122,7 @@ func (h *HandlerT) StopCPUProfile() error { if h.cpuW == nil { return errors.New("CPU profiling not in progress") } - log.Info(fmt.Sprint("done writing CPU profile to", h.cpuFile)) + log.Info("Done writing CPU profile", "dump", h.cpuFile) h.cpuW.Close() h.cpuW = nil h.cpuFile = "" @@ -179,7 +178,7 @@ func (*HandlerT) Stacks() string { func writeProfile(name, file string) error { p := pprof.Lookup(name) - log.Info(fmt.Sprintf("writing %d %s profile records to %s", p.Count(), name, file)) + log.Info("Writing profile records", "count", p.Count(), "type", name, "dump", file) f, err := os.Create(expandHome(file)) if err != nil { return err diff --git a/internal/debug/flags.go b/internal/debug/flags.go index f952519397..6247cc7dc0 100644 --- a/internal/debug/flags.go +++ b/internal/debug/flags.go @@ -129,8 +129,10 @@ func Setup(ctx *cli.Context) error { if ctx.GlobalBool(pprofFlag.Name) { address := fmt.Sprintf("%s:%d", ctx.GlobalString(pprofAddrFlag.Name), ctx.GlobalInt(pprofPortFlag.Name)) go func() { - log.Info(fmt.Sprintf("starting pprof server at http://%s/debug/pprof", address)) - log.Error(fmt.Sprint(http.ListenAndServe(address, nil))) + log.Info("Starting pprof server", "addr", fmt.Sprintf("http://%s/debug/pprof", address)) + if err := http.ListenAndServe(address, nil); err != nil { + log.Error("Failure in running pprof server", "err", err) + } }() } return nil diff --git a/internal/debug/trace.go b/internal/debug/trace.go index 5e4b9df840..cab5deaafd 100644 --- a/internal/debug/trace.go +++ b/internal/debug/trace.go @@ -20,7 +20,6 @@ package debug import ( "errors" - "fmt" "os" "runtime/trace" @@ -44,7 +43,7 @@ func (h *HandlerT) StartGoTrace(file string) error { } h.traceW = f h.traceFile = file - log.Info(fmt.Sprint("trace started, writing to", h.traceFile)) + log.Info("Go tracing started", "dump", h.traceFile) return nil } @@ -56,7 +55,7 @@ func (h *HandlerT) StopGoTrace() error { if h.traceW == nil { return errors.New("trace not in progress") } - log.Info(fmt.Sprint("done writing trace to", h.traceFile)) + log.Info("Done writing Go trace", "dump", h.traceFile) h.traceW.Close() h.traceW = nil h.traceFile = "" diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go index 5b7115e445..caa7421807 100644 --- a/internal/ethapi/api.go +++ b/internal/ethapi/api.go @@ -477,7 +477,7 @@ func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(ctx context.Context, if block != nil { uncles := block.Uncles() if index >= hexutil.Uint(len(uncles)) { - log.Debug(fmt.Sprintf("uncle block on index %d not found for block #%d", index, blockNr)) + log.Debug("Requested uncle not found", "number", blockNr, "hash", block.Hash(), "index", index) return nil, nil } block = types.NewBlockWithHeader(uncles[index]) @@ -493,7 +493,7 @@ func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(ctx context.Context, b if block != nil { uncles := block.Uncles() if index >= hexutil.Uint(len(uncles)) { - log.Debug(fmt.Sprintf("uncle block on index %d not found for block %s", index, blockHash.Hex())) + log.Debug("Requested uncle not found", "number", block.Number(), "hash", blockHash, "index", index) return nil, nil } block = types.NewBlockWithHeader(uncles[index]) @@ -579,7 +579,7 @@ type CallArgs struct { } func (s *PublicBlockChainAPI) doCall(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber, vmCfg vm.Config) ([]byte, *big.Int, error) { - defer func(start time.Time) { log.Debug(fmt.Sprintf("call took %v", time.Since(start))) }(time.Now()) + defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now()) state, header, err := s.b.StateAndHeaderByNumber(ctx, blockNr) if state == nil || err != nil { @@ -999,42 +999,40 @@ func getTransactionBlockData(chainDb ethdb.Database, txHash common.Hash) (common } // GetTransactionByHash returns the transaction for the given hash -func (s *PublicTransactionPoolAPI) GetTransactionByHash(ctx context.Context, txHash common.Hash) (*RPCTransaction, error) { +func (s *PublicTransactionPoolAPI) GetTransactionByHash(ctx context.Context, hash common.Hash) (*RPCTransaction, error) { var tx *types.Transaction var isPending bool var err error - if tx, isPending, err = getTransaction(s.b.ChainDb(), s.b, txHash); err != nil { - log.Debug(fmt.Sprintf("%v\n", err)) + if tx, isPending, err = getTransaction(s.b.ChainDb(), s.b, hash); err != nil { + log.Debug("Failed to retrieve transaction", "hash", hash, "err", err) return nil, nil } else if tx == nil { return nil, nil } - if isPending { return newRPCPendingTransaction(tx), nil } - blockHash, _, _, err := getTransactionBlockData(s.b.ChainDb(), txHash) + blockHash, _, _, err := getTransactionBlockData(s.b.ChainDb(), hash) if err != nil { - log.Debug(fmt.Sprintf("%v\n", err)) + log.Debug("Failed to retrieve transaction block", "hash", hash, "err", err) return nil, nil } if block, _ := s.b.GetBlock(ctx, blockHash); block != nil { - return newRPCTransaction(block, txHash) + return newRPCTransaction(block, hash) } - return nil, nil } // GetRawTransactionByHash returns the bytes of the transaction for the given hash. -func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context, txHash common.Hash) (hexutil.Bytes, error) { +func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context, hash common.Hash) (hexutil.Bytes, error) { var tx *types.Transaction var err error - if tx, _, err = getTransaction(s.b.ChainDb(), s.b, txHash); err != nil { - log.Debug(fmt.Sprintf("%v\n", err)) + if tx, _, err = getTransaction(s.b.ChainDb(), s.b, hash); err != nil { + log.Debug("Failed to retrieve transaction", "hash", hash, "err", err) return nil, nil } else if tx == nil { return nil, nil @@ -1044,22 +1042,22 @@ func (s *PublicTransactionPoolAPI) GetRawTransactionByHash(ctx context.Context, } // GetTransactionReceipt returns the transaction receipt for the given transaction hash. -func (s *PublicTransactionPoolAPI) GetTransactionReceipt(txHash common.Hash) (map[string]interface{}, error) { - receipt := core.GetReceipt(s.b.ChainDb(), txHash) +func (s *PublicTransactionPoolAPI) GetTransactionReceipt(hash common.Hash) (map[string]interface{}, error) { + receipt := core.GetReceipt(s.b.ChainDb(), hash) if receipt == nil { - log.Debug(fmt.Sprintf("receipt not found for transaction %s", txHash.Hex())) + log.Debug("Receipt not found for transaction", "hash", hash) return nil, nil } - tx, _, err := getTransaction(s.b.ChainDb(), s.b, txHash) + tx, _, err := getTransaction(s.b.ChainDb(), s.b, hash) if err != nil { - log.Debug(fmt.Sprintf("%v\n", err)) + log.Debug("Failed to retrieve transaction", "hash", hash, "err", err) return nil, nil } - txBlock, blockIndex, index, err := getTransactionBlockData(s.b.ChainDb(), txHash) + txBlock, blockIndex, index, err := getTransactionBlockData(s.b.ChainDb(), hash) if err != nil { - log.Debug(fmt.Sprintf("%v\n", err)) + log.Debug("Failed to retrieve transaction block", "hash", hash, "err", err) return nil, nil } @@ -1073,7 +1071,7 @@ func (s *PublicTransactionPoolAPI) GetTransactionReceipt(txHash common.Hash) (ma "root": hexutil.Bytes(receipt.PostState), "blockHash": txBlock, "blockNumber": hexutil.Uint64(blockIndex), - "transactionHash": txHash, + "transactionHash": hash, "transactionIndex": hexutil.Uint64(index), "from": from, "to": tx.To(), @@ -1162,9 +1160,9 @@ func submitTransaction(ctx context.Context, b Backend, tx *types.Transaction) (c signer := types.MakeSigner(b.ChainConfig(), b.CurrentBlock().Number()) from, _ := types.Sender(signer, tx) addr := crypto.CreateAddress(from, tx.Nonce()) - log.Info(fmt.Sprintf("Tx(%s) created: %s\n", tx.Hash().Hex(), addr.Hex())) + log.Info("Submitted contract creation", "fullhash", tx.Hash().Hex(), "contract", addr.Hex()) } else { - log.Info(fmt.Sprintf("Tx(%s) to: %s\n", tx.Hash().Hex(), tx.To().Hex())) + log.Info("Submitted transaction", "fullhash", tx.Hash().Hex(), "recipient", tx.To()) } return tx.Hash(), nil } @@ -1216,9 +1214,9 @@ func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, encod return "", err } addr := crypto.CreateAddress(from, tx.Nonce()) - log.Info(fmt.Sprintf("Tx(%x) created: %x\n", tx.Hash(), addr)) + log.Info("Submitted contract creation", "fullhash", tx.Hash().Hex(), "contract", addr.Hex()) } else { - log.Info(fmt.Sprintf("Tx(%x) to: %x\n", tx.Hash(), tx.To())) + log.Info("Submitted transaction", "fullhash", tx.Hash().Hex(), "recipient", tx.To()) } return tx.Hash().Hex(), nil @@ -1423,10 +1421,10 @@ func (api *PrivateDebugAPI) ChaindbCompact() error { return fmt.Errorf("chaindbCompact does not work for memory databases") } for b := byte(0); b < 255; b++ { - log.Info(fmt.Sprintf("compacting chain DB range 0x%0.2X-0x%0.2X", b, b+1)) + log.Info("Compacting chain database", "range", fmt.Sprintf("0x%0.2X-0x%0.2X", b, b+1)) err := ldb.LDB().CompactRange(util.Range{Start: []byte{b}, Limit: []byte{b + 1}}) if err != nil { - log.Error(fmt.Sprintf("compaction error: %v", err)) + log.Error("Database compaction failed", "err", err) return err } } diff --git a/les/backend.go b/les/backend.go index 94563c29f7..e96fc9df0b 100644 --- a/les/backend.go +++ b/les/backend.go @@ -187,7 +187,7 @@ func (s *LightEthereum) Protocols() []p2p.Protocol { // Start implements node.Service, starting all internal goroutines needed by the // Ethereum protocol implementation. func (s *LightEthereum) Start(srvr *p2p.Server) error { - log.Info(fmt.Sprintf("WARNING: light client mode is an experimental feature")) + log.Warn("Light client mode is an experimental feature") s.netRPCService = ethapi.NewPublicNetAPI(srvr, s.netVersionId) s.protocolManager.Start(srvr) return nil diff --git a/les/fetcher.go b/les/fetcher.go index dcaea87e82..f9e517d25b 100644 --- a/les/fetcher.go +++ b/les/fetcher.go @@ -18,7 +18,6 @@ package les import ( - "fmt" "math/big" "sync" "time" @@ -174,7 +173,7 @@ func (f *lightFetcher) syncLoop() { f.reqMu.Unlock() if ok { f.pm.serverPool.adjustResponseTime(req.peer.poolEntry, time.Duration(mclock.Now()-req.sent), true) - log.Debug(fmt.Sprintf("hard timeout by peer %v", req.peer.id)) + req.peer.Log().Debug("Fetching data timed out hard") go f.pm.removePeer(req.peer.id) } case resp := <-f.deliverChn: @@ -192,13 +191,13 @@ func (f *lightFetcher) syncLoop() { } f.lock.Lock() if !ok || !(f.syncing || f.processResponse(req, resp)) { - log.Debug(fmt.Sprintf("failed processing response by peer %v", resp.peer.id)) + resp.peer.Log().Debug("Failed processing response") go f.pm.removePeer(resp.peer.id) } f.lock.Unlock() case p := <-f.syncDone: f.lock.Lock() - log.Debug(fmt.Sprintf("done synchronising with peer %v", p.id)) + p.Log().Debug("Done synchronising with peer") f.checkSyncedHeaders(p) f.syncing = false f.lock.Unlock() @@ -239,17 +238,17 @@ func (f *lightFetcher) removePeer(p *peer) { func (f *lightFetcher) announce(p *peer, head *announceData) { f.lock.Lock() defer f.lock.Unlock() - log.Debug(fmt.Sprintf("received announce from peer %v #%d %016x reorg: %d", p.id, head.Number, head.Hash[:8], head.ReorgDepth)) + p.Log().Debug("Received new announcement", "number", head.Number, "hash", head.Hash, "reorg", head.ReorgDepth) fp := f.peers[p] if fp == nil { - log.Debug(fmt.Sprintf("announce: unknown peer")) + p.Log().Debug("Announcement from unknown peer") return } if fp.lastAnnounced != nil && head.Td.Cmp(fp.lastAnnounced.td) <= 0 { // announced tds should be strictly monotonic - log.Debug(fmt.Sprintf("non-monotonic Td from peer %v", p.id)) + p.Log().Debug("Received non-monotonic td", "current", head.Td, "previous", fp.lastAnnounced.td) go f.pm.removePeer(p.id) return } @@ -355,14 +354,14 @@ func (f *lightFetcher) peerHasBlock(p *peer, hash common.Hash, number uint64) bo func (f *lightFetcher) request(p *peer, reqID uint64, n *fetcherTreeNode, amount uint64) (uint64, bool) { fp := f.peers[p] if fp == nil { - log.Debug(fmt.Sprintf("request: unknown peer")) + p.Log().Debug("Requesting from unknown peer") p.fcServer.DeassignRequest(reqID) return 0, false } if fp.bestConfirmed == nil || fp.root == nil || !f.checkKnownNode(p, fp.root) { f.syncing = true go func() { - log.Debug(fmt.Sprintf("synchronising with peer %v", p.id)) + p.Log().Debug("Synchronisation started") f.pm.synchronise(p) f.syncDone <- p }() @@ -457,7 +456,7 @@ func (f *lightFetcher) deliverHeaders(peer *peer, reqID uint64, headers []*types // processResponse processes header download request responses, returns true if successful func (f *lightFetcher) processResponse(req fetchRequest, resp fetchResponse) bool { if uint64(len(resp.headers)) != req.amount || resp.headers[0].Hash() != req.hash { - log.Debug(fmt.Sprintf("response mismatch %v %016x != %v %016x", len(resp.headers), resp.headers[0].Hash().Bytes()[:8], req.amount, req.hash[:8])) + req.peer.Log().Debug("Response content mismatch", "requested", len(resp.headers), "reqfrom", resp.headers[0], "delivered", req.amount, "delfrom", req.hash) return false } headers := make([]*types.Header, req.amount) @@ -468,14 +467,14 @@ func (f *lightFetcher) processResponse(req fetchRequest, resp fetchResponse) boo if err == core.BlockFutureErr { return true } - log.Debug(fmt.Sprintf("InsertHeaderChain error: %v", err)) + log.Debug("Failed to insert header chain", "err", err) return false } tds := make([]*big.Int, len(headers)) for i, header := range headers { td := f.chain.GetTd(header.Hash(), header.Number.Uint64()) if td == nil { - log.Debug(fmt.Sprintf("TD not found for header %v of %v", i+1, len(headers))) + log.Debug("Total difficulty not found for header", "index", i+1, "number", header.Number, "hash", header.Hash()) return false } tds[i] = td @@ -490,7 +489,7 @@ func (f *lightFetcher) newHeaders(headers []*types.Header, tds []*big.Int) { var maxTd *big.Int for p, fp := range f.peers { if !f.checkAnnouncedHeaders(fp, headers, tds) { - log.Debug(fmt.Sprintf("announce inconsistency by peer %v", p.id)) + p.Log().Debug("Inconsistent announcement") go f.pm.removePeer(p.id) } if fp.confirmedTd != nil && (maxTd == nil || maxTd.Cmp(fp.confirmedTd) > 0) { @@ -576,7 +575,7 @@ func (f *lightFetcher) checkAnnouncedHeaders(fp *fetcherPeerInfo, headers []*typ func (f *lightFetcher) checkSyncedHeaders(p *peer) { fp := f.peers[p] if fp == nil { - log.Debug(fmt.Sprintf("checkSyncedHeaders: unknown peer")) + p.Log().Debug("Unknown peer to check sync headers") return } n := fp.lastAnnounced @@ -589,7 +588,7 @@ func (f *lightFetcher) checkSyncedHeaders(p *peer) { } // now n is the latest downloaded header after syncing if n == nil { - log.Debug(fmt.Sprintf("synchronisation failed with peer %v", p.id)) + p.Log().Debug("Synchronisation failed") go f.pm.removePeer(p.id) } else { header := f.chain.GetHeader(n.hash, n.number) @@ -610,12 +609,12 @@ func (f *lightFetcher) checkKnownNode(p *peer, n *fetcherTreeNode) bool { fp := f.peers[p] if fp == nil { - log.Debug(fmt.Sprintf("checkKnownNode: unknown peer")) + p.Log().Debug("Unknown peer to check known nodes") return false } header := f.chain.GetHeader(n.hash, n.number) if !f.checkAnnouncedHeaders(fp, []*types.Header{header}, []*big.Int{td}) { - log.Debug(fmt.Sprintf("announce inconsistency by peer %v", p.id)) + p.Log().Debug("Inconsistent announcement") go f.pm.removePeer(p.id) } if fp.confirmedTd != nil { @@ -700,7 +699,7 @@ func (f *lightFetcher) checkUpdateStats(p *peer, newEntry *updateStatsEntry) { now := mclock.Now() fp := f.peers[p] if fp == nil { - log.Debug(fmt.Sprintf("checkUpdateStats: unknown peer")) + p.Log().Debug("Unknown peer to check update stats") return } if newEntry != nil && fp.firstUpdateStats == nil { diff --git a/les/handler.go b/les/handler.go index 1fdb7c43f9..4271da8b8d 100644 --- a/les/handler.go +++ b/les/handler.go @@ -198,7 +198,6 @@ func NewProtocolManager(chainConfig *params.ChainConfig, lightSync bool, network } if lightSync { - log.Debug(fmt.Sprintf("LES: create downloader")) manager.downloader = downloader.New(downloader.LightSync, chainDb, manager.eventMux, blockchain.HasHeader, nil, blockchain.GetHeaderByHash, nil, blockchain.CurrentHeader, nil, nil, nil, blockchain.GetTdByHash, blockchain.InsertHeaderChain, nil, nil, blockchain.Rollback, removePeer) @@ -225,16 +224,13 @@ func (pm *ProtocolManager) removePeer(id string) { if peer == nil { return } + log.Debug("Removing light Ethereum peer", "peer", id) if err := pm.peers.Unregister(id); err != nil { if err == errNotRegistered { return } - log.Error(fmt.Sprint("Removal failed:", err)) } - log.Debug(fmt.Sprint("Removing peer", id)) - // Unregister the peer from the downloader and Ethereum peer set - log.Debug(fmt.Sprintf("LES: unregister peer %v", id)) if pm.lightSync { pm.downloader.UnregisterPeer(id) if pm.txrelay != nil { @@ -267,9 +263,11 @@ func (pm *ProtocolManager) Start(srvr *p2p.Server) { } else { if topicDisc != nil { go func() { - log.Info(fmt.Sprint("Starting registering topic", string(lesTopic))) + logger := log.New("topic", lesTopic) + logger.Info("Starting topic registration") + defer logger.Info("Terminated topic registration") + topicDisc.RegisterTopic(lesTopic, pm.quitSync) - log.Info(fmt.Sprint("Stopped registering topic", string(lesTopic))) }() } go func() { @@ -282,7 +280,7 @@ func (pm *ProtocolManager) Start(srvr *p2p.Server) { func (pm *ProtocolManager) Stop() { // Showing a log message. During download / process this could actually // take between 5 to 10 seconds and therefor feedback is required. - log.Info(fmt.Sprint("Stopping light ethereum protocol handler...")) + log.Info("Stopping light Ethereum protocol") // Quit the sync loop. // After this send has completed, no new peers will be accepted. @@ -299,7 +297,7 @@ func (pm *ProtocolManager) Stop() { // Wait for any process action pm.wg.Wait() - log.Info(fmt.Sprint("Light ethereum protocol handler stopped")) + log.Info("Light Ethereum protocol stopped") } func (pm *ProtocolManager) newPeer(pv, nv int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer { @@ -309,22 +307,21 @@ func (pm *ProtocolManager) newPeer(pv, nv int, p *p2p.Peer, rw p2p.MsgReadWriter // handle is the callback invoked to manage the life cycle of a les peer. When // this function terminates, the peer is disconnected. func (pm *ProtocolManager) handle(p *peer) error { - log.Debug(fmt.Sprintf("%v: peer connected [%s]", p, p.Name())) + p.Log().Debug("Light Ethereum peer connected", "name", p.Name()) // Execute the LES handshake td, head, genesis := pm.blockchain.Status() headNum := core.GetBlockNumber(pm.chainDb, head) if err := p.Handshake(td, head, headNum, genesis, pm.server); err != nil { - log.Debug(fmt.Sprintf("%v: handshake failed: %v", p, err)) + p.Log().Debug("Light Ethereum handshake failed", "err", err) return err } if rw, ok := p.rw.(*meteredMsgReadWriter); ok { rw.Init(p.version) } // Register the peer locally - log.Trace(fmt.Sprintf("%v: adding peer", p)) if err := pm.peers.Register(p); err != nil { - log.Error(fmt.Sprintf("%v: addition failed: %v", p, err)) + p.Log().Error("Light Ethereum peer registration failed", "err", err) return err } defer func() { @@ -333,9 +330,7 @@ func (pm *ProtocolManager) handle(p *peer) error { } pm.removePeer(p.id) }() - // Register the peer in the downloader. If the downloader considers it banned, we disconnect - log.Debug(fmt.Sprintf("LES: register peer %v", p.id)) if pm.lightSync { requestHeadersByHash := func(origin common.Hash, amount int, skip int, reverse bool) error { reqID := getNextReqID() @@ -389,7 +384,7 @@ func (pm *ProtocolManager) handle(p *peer) error { // main loop. handle incoming messages. for { if err := pm.handleMsg(p); err != nil { - log.Debug(fmt.Sprintf("%v: message handling failed: %v", p, err)) + p.Log().Debug("Light Ethereum message handling failed", "err", err) return err } } @@ -405,8 +400,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { if err != nil { return err } - - log.Debug(fmt.Sprint("msg:", msg.Code, msg.Size)) + p.Log().Trace("Light Ethereum message arrived", "code", msg.Code, "bytes", msg.Size) costs := p.fcCosts[msg.Code] reject := func(reqCnt, maxCnt uint64) bool { @@ -419,7 +413,8 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { cost = pm.server.defParams.BufLimit } if cost > bufValue { - log.Error(fmt.Sprintf("Request from %v came %v too early", p.id, time.Duration((cost-bufValue)*1000000/pm.server.defParams.MinRecharge))) + recharge := time.Duration((cost - bufValue) * 1000000 / pm.server.defParams.MinRecharge) + p.Log().Error("Request came too early", "recharge", common.PrettyDuration(recharge)) return true } return false @@ -435,25 +430,25 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { // Handle the message depending on its contents switch msg.Code { case StatusMsg: - log.Debug(fmt.Sprintf("<=== StatusMsg from peer %v", p.id)) + p.Log().Trace("Received status message") // Status messages should never arrive after the handshake return errResp(ErrExtraStatusMsg, "uncontrolled status message") // Block header query, collect the requested headers and reply case AnnounceMsg: - log.Debug(fmt.Sprintf("<=== AnnounceMsg from peer %v:", p.id)) + p.Log().Trace("Received announce message") var req announceData if err := msg.Decode(&req); err != nil { return errResp(ErrDecode, "%v: %v", msg, err) } - log.Trace(fmt.Sprint("AnnounceMsg:", req.Number, req.Hash, req.Td, req.ReorgDepth)) + p.Log().Trace("Announce message content", "number", req.Number, "hash", req.Hash, "td", req.Td, "reorg", req.ReorgDepth) if pm.fetcher != nil { pm.fetcher.announce(p, &req) } case GetBlockHeadersMsg: - log.Debug(fmt.Sprintf("<=== GetBlockHeadersMsg from peer %v", p.id)) + p.Log().Trace("Received block header request") // Decode the complex header query var req struct { ReqID uint64 @@ -538,7 +533,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return errResp(ErrUnexpectedResponse, "") } - log.Debug(fmt.Sprintf("<=== BlockHeadersMsg from peer %v", p.id)) + p.Log().Trace("Received block header response message") // A batch of headers arrived to one of our previous requests var resp struct { ReqID, BV uint64 @@ -558,7 +553,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } case GetBlockBodiesMsg: - log.Debug(fmt.Sprintf("<=== GetBlockBodiesMsg from peer %v", p.id)) + p.Log().Trace("Received block bodies request") // Decode the retrieval message var req struct { ReqID uint64 @@ -595,7 +590,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return errResp(ErrUnexpectedResponse, "") } - log.Debug(fmt.Sprintf("<=== BlockBodiesMsg from peer %v", p.id)) + p.Log().Trace("Received block bodies response") // A batch of block bodies arrived to one of our previous requests var resp struct { ReqID, BV uint64 @@ -612,7 +607,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } case GetCodeMsg: - log.Debug(fmt.Sprintf("<=== GetCodeMsg from peer %v", p.id)) + p.Log().Trace("Received code request") // Decode the retrieval message var req struct { ReqID uint64 @@ -656,7 +651,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return errResp(ErrUnexpectedResponse, "") } - log.Debug(fmt.Sprintf("<=== CodeMsg from peer %v", p.id)) + p.Log().Trace("Received code response") // A batch of node state data arrived to one of our previous requests var resp struct { ReqID, BV uint64 @@ -673,7 +668,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } case GetReceiptsMsg: - log.Debug(fmt.Sprintf("<=== GetReceiptsMsg from peer %v", p.id)) + p.Log().Trace("Received receipts request") // Decode the retrieval message var req struct { ReqID uint64 @@ -704,7 +699,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } // If known, encode and queue for response packet if encoded, err := rlp.EncodeToBytes(results); err != nil { - log.Error(fmt.Sprintf("failed to encode receipt: %v", err)) + log.Error("Failed to encode receipt", "err", err) } else { receipts = append(receipts, encoded) bytes += len(encoded) @@ -719,7 +714,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return errResp(ErrUnexpectedResponse, "") } - log.Debug(fmt.Sprintf("<=== ReceiptsMsg from peer %v", p.id)) + p.Log().Trace("Received receipts response") // A batch of receipts arrived to one of our previous requests var resp struct { ReqID, BV uint64 @@ -736,7 +731,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } case GetProofsMsg: - log.Debug(fmt.Sprintf("<=== GetProofsMsg from peer %v", p.id)) + p.Log().Trace("Received proofs request") // Decode the retrieval message var req struct { ReqID uint64 @@ -786,7 +781,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return errResp(ErrUnexpectedResponse, "") } - log.Debug(fmt.Sprintf("<=== ProofsMsg from peer %v", p.id)) + p.Log().Trace("Received proofs response") // A batch of merkle proofs arrived to one of our previous requests var resp struct { ReqID, BV uint64 @@ -803,7 +798,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } case GetHeaderProofsMsg: - log.Debug(fmt.Sprintf("<=== GetHeaderProofsMsg from peer %v", p.id)) + p.Log().Trace("Received headers proof request") // Decode the retrieval message var req struct { ReqID uint64 @@ -847,7 +842,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { return errResp(ErrUnexpectedResponse, "") } - log.Debug(fmt.Sprintf("<=== HeaderProofsMsg from peer %v", p.id)) + p.Log().Trace("Received headers proof response") var resp struct { ReqID, BV uint64 Data []ChtResp @@ -884,14 +879,13 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { pm.server.fcCostStats.update(msg.Code, uint64(reqCnt), rcost) default: - log.Debug(fmt.Sprintf("<=== unknown message with code %d from peer %v", msg.Code, p.id)) + p.Log().Trace("Received unknown message", "code", msg.Code) return errResp(ErrInvalidMsgCode, "%v", msg.Code) } if deliverMsg != nil { return pm.odr.Deliver(p, deliverMsg) } - return nil } diff --git a/les/odr.go b/les/odr.go index 78c7c1af44..afc894ab50 100644 --- a/les/odr.go +++ b/les/odr.go @@ -19,7 +19,6 @@ package les import ( "crypto/rand" "encoding/binary" - "fmt" "sync" "time" @@ -70,9 +69,8 @@ func (odr *LesOdr) Database() ethdb.Database { return odr.db } -// validatorFunc is a function that processes a message and returns true if -// it was a meaningful answer to a given request -type validatorFunc func(ethdb.Database, *Msg) bool +// validatorFunc is a function that processes a message. +type validatorFunc func(ethdb.Database, *Msg) error // sentReq is a request waiting for an answer that satisfies its valFunc type sentReq struct { @@ -113,18 +111,19 @@ func (self *LesOdr) Deliver(peer *peer, msg *Msg) error { return errResp(ErrUnexpectedResponse, "reqID = %v", msg.ReqID) } - if req.valFunc(self.db, msg) { - close(delivered) - req.lock.Lock() - delete(req.sentTo, peer) - if req.answered != nil { - close(req.answered) - req.answered = nil - } - req.lock.Unlock() - return nil + if err := req.valFunc(self.db, msg); err != nil { + peer.Log().Warn("Invalid odr response", "err", err) + return errResp(ErrInvalidResponse, "reqID = %v", msg.ReqID) } - return errResp(ErrInvalidResponse, "reqID = %v", msg.ReqID) + close(delivered) + req.lock.Lock() + delete(req.sentTo, peer) + if req.answered != nil { + close(req.answered) + req.answered = nil + } + req.lock.Unlock() + return nil } func (self *LesOdr) requestPeer(req *sentReq, peer *peer, delivered, timeout chan struct{}, reqWg *sync.WaitGroup) { @@ -151,7 +150,7 @@ func (self *LesOdr) requestPeer(req *sentReq, peer *peer, delivered, timeout cha select { case <-delivered: case <-time.After(hardRequestTimeout): - log.Debug(fmt.Sprintf("ODR hard request timeout from peer %v", peer.id)) + peer.Log().Debug("Request timed out hard") go self.removePeer(peer.id) case <-self.stop: return @@ -237,7 +236,7 @@ func (self *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err err // retrieved from network, store in db req.StoreResult(self.db) } else { - log.Debug(fmt.Sprintf("networkRequest err = %v", err)) + log.Debug("Failed to retrieve data from network", "err", err) } return } diff --git a/les/odr_requests.go b/les/odr_requests.go index 5321a68cb4..53aced93c6 100644 --- a/les/odr_requests.go +++ b/les/odr_requests.go @@ -19,8 +19,8 @@ package les import ( - "bytes" "encoding/binary" + "errors" "fmt" "github.com/ethereum/go-ethereum/common" @@ -34,11 +34,22 @@ import ( "github.com/ethereum/go-ethereum/trie" ) +var ( + errInvalidMessageType = errors.New("invalid message type") + errMultipleEntries = errors.New("multiple response entries") + errHeaderUnavailable = errors.New("header unavailable") + errTxHashMismatch = errors.New("transaction hash mismatch") + errUncleHashMismatch = errors.New("uncle hash mismatch") + errReceiptHashMismatch = errors.New("receipt hash mismatch") + errDataHashMismatch = errors.New("data hash mismatch") + errCHTHashMismatch = errors.New("cht hash mismatch") +) + type LesOdrRequest interface { GetCost(*peer) uint64 CanSend(*peer) bool Request(uint64, *peer) error - Valid(ethdb.Database, *Msg) bool // if true, keeps the retrieved object + Valid(ethdb.Database, *Msg) error // if true, keeps the retrieved object } func LesRequest(req light.OdrRequest) LesOdrRequest { @@ -63,59 +74,55 @@ type BlockRequest light.BlockRequest // GetCost returns the cost of the given ODR request according to the serving // peer's cost table (implementation of LesOdrRequest) -func (self *BlockRequest) GetCost(peer *peer) uint64 { +func (r *BlockRequest) GetCost(peer *peer) uint64 { return peer.GetRequestCost(GetBlockBodiesMsg, 1) } // CanSend tells if a certain peer is suitable for serving the given request -func (self *BlockRequest) CanSend(peer *peer) bool { - return peer.HasBlock(self.Hash, self.Number) +func (r *BlockRequest) CanSend(peer *peer) bool { + return peer.HasBlock(r.Hash, r.Number) } // Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (self *BlockRequest) Request(reqID uint64, peer *peer) error { - log.Debug(fmt.Sprintf("ODR: requesting body of block %08x from peer %v", self.Hash[:4], peer.id)) - return peer.RequestBodies(reqID, self.GetCost(peer), []common.Hash{self.Hash}) +func (r *BlockRequest) Request(reqID uint64, peer *peer) error { + peer.Log().Debug("Requesting block body", "hash", r.Hash) + return peer.RequestBodies(reqID, r.GetCost(peer), []common.Hash{r.Hash}) } // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (self *BlockRequest) Valid(db ethdb.Database, msg *Msg) bool { - log.Debug(fmt.Sprintf("ODR: validating body of block %08x", self.Hash[:4])) +func (r *BlockRequest) Valid(db ethdb.Database, msg *Msg) error { + log.Debug("Validating block body", "hash", r.Hash) + + // Ensure we have a correct message with a single block body if msg.MsgType != MsgBlockBodies { - log.Debug(fmt.Sprintf("ODR: invalid message type")) - return false + return errInvalidMessageType } bodies := msg.Obj.([]*types.Body) if len(bodies) != 1 { - log.Debug(fmt.Sprintf("ODR: invalid number of entries: %d", len(bodies))) - return false + return errMultipleEntries } body := bodies[0] - header := core.GetHeader(db, self.Hash, self.Number) + + // Retrieve our stored header and validate block content against it + header := core.GetHeader(db, r.Hash, r.Number) if header == nil { - log.Debug(fmt.Sprintf("ODR: header not found for block %08x", self.Hash[:4])) - return false + return errHeaderUnavailable } - txHash := types.DeriveSha(types.Transactions(body.Transactions)) - if header.TxHash != txHash { - log.Debug(fmt.Sprintf("ODR: header.TxHash %08x does not match received txHash %08x", header.TxHash[:4], txHash[:4])) - return false + if header.TxHash != types.DeriveSha(types.Transactions(body.Transactions)) { + return errTxHashMismatch } - uncleHash := types.CalcUncleHash(body.Uncles) - if header.UncleHash != uncleHash { - log.Debug(fmt.Sprintf("ODR: header.UncleHash %08x does not match received uncleHash %08x", header.UncleHash[:4], uncleHash[:4])) - return false + if header.UncleHash != types.CalcUncleHash(body.Uncles) { + return errUncleHashMismatch } + // Validations passed, encode and store RLP data, err := rlp.EncodeToBytes(body) if err != nil { - log.Debug(fmt.Sprintf("ODR: body RLP encode error: %v", err)) - return false + return err } - self.Rlp = data - log.Debug(fmt.Sprintf("ODR: validation successful")) - return true + r.Rlp = data + return nil } // ReceiptsRequest is the ODR request type for block receipts by block hash @@ -123,48 +130,48 @@ type ReceiptsRequest light.ReceiptsRequest // GetCost returns the cost of the given ODR request according to the serving // peer's cost table (implementation of LesOdrRequest) -func (self *ReceiptsRequest) GetCost(peer *peer) uint64 { +func (r *ReceiptsRequest) GetCost(peer *peer) uint64 { return peer.GetRequestCost(GetReceiptsMsg, 1) } // CanSend tells if a certain peer is suitable for serving the given request -func (self *ReceiptsRequest) CanSend(peer *peer) bool { - return peer.HasBlock(self.Hash, self.Number) +func (r *ReceiptsRequest) CanSend(peer *peer) bool { + return peer.HasBlock(r.Hash, r.Number) } // Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (self *ReceiptsRequest) Request(reqID uint64, peer *peer) error { - log.Debug(fmt.Sprintf("ODR: requesting receipts for block %08x from peer %v", self.Hash[:4], peer.id)) - return peer.RequestReceipts(reqID, self.GetCost(peer), []common.Hash{self.Hash}) +func (r *ReceiptsRequest) Request(reqID uint64, peer *peer) error { + peer.Log().Debug("Requesting block receipts", "hash", r.Hash) + return peer.RequestReceipts(reqID, r.GetCost(peer), []common.Hash{r.Hash}) } // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (self *ReceiptsRequest) Valid(db ethdb.Database, msg *Msg) bool { - log.Debug(fmt.Sprintf("ODR: validating receipts for block %08x", self.Hash[:4])) +func (r *ReceiptsRequest) Valid(db ethdb.Database, msg *Msg) error { + log.Debug("Validating block receipts", "hash", r.Hash) + + // Ensure we have a correct message with a single block receipt if msg.MsgType != MsgReceipts { - log.Debug(fmt.Sprintf("ODR: invalid message type")) - return false + return errInvalidMessageType } receipts := msg.Obj.([]types.Receipts) if len(receipts) != 1 { - log.Debug(fmt.Sprintf("ODR: invalid number of entries: %d", len(receipts))) - return false + return errMultipleEntries } - hash := types.DeriveSha(receipts[0]) - header := core.GetHeader(db, self.Hash, self.Number) + receipt := receipts[0] + + // Retrieve our stored header and validate receipt content against it + header := core.GetHeader(db, r.Hash, r.Number) if header == nil { - log.Debug(fmt.Sprintf("ODR: header not found for block %08x", self.Hash[:4])) - return false + return errHeaderUnavailable } - if !bytes.Equal(header.ReceiptHash[:], hash[:]) { - log.Debug(fmt.Sprintf("ODR: header receipts hash %08x does not match calculated RLP hash %08x", header.ReceiptHash[:4], hash[:4])) - return false + if header.ReceiptHash != types.DeriveSha(receipt) { + return errReceiptHashMismatch } - self.Receipts = receipts[0] - log.Debug(fmt.Sprintf("ODR: validation successful")) - return true + // Validations passed, store and return + r.Receipts = receipt + return nil } type ProofReq struct { @@ -178,49 +185,46 @@ type TrieRequest light.TrieRequest // GetCost returns the cost of the given ODR request according to the serving // peer's cost table (implementation of LesOdrRequest) -func (self *TrieRequest) GetCost(peer *peer) uint64 { +func (r *TrieRequest) GetCost(peer *peer) uint64 { return peer.GetRequestCost(GetProofsMsg, 1) } // CanSend tells if a certain peer is suitable for serving the given request -func (self *TrieRequest) CanSend(peer *peer) bool { - return peer.HasBlock(self.Id.BlockHash, self.Id.BlockNumber) +func (r *TrieRequest) CanSend(peer *peer) bool { + return peer.HasBlock(r.Id.BlockHash, r.Id.BlockNumber) } // Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (self *TrieRequest) Request(reqID uint64, peer *peer) error { - log.Debug(fmt.Sprintf("ODR: requesting trie root %08x key %08x from peer %v", self.Id.Root[:4], self.Key[:4], peer.id)) +func (r *TrieRequest) Request(reqID uint64, peer *peer) error { + peer.Log().Debug("Requesting trie proof", "root", r.Id.Root, "key", r.Key) req := &ProofReq{ - BHash: self.Id.BlockHash, - AccKey: self.Id.AccKey, - Key: self.Key, + BHash: r.Id.BlockHash, + AccKey: r.Id.AccKey, + Key: r.Key, } - return peer.RequestProofs(reqID, self.GetCost(peer), []*ProofReq{req}) + return peer.RequestProofs(reqID, r.GetCost(peer), []*ProofReq{req}) } // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (self *TrieRequest) Valid(db ethdb.Database, msg *Msg) bool { - log.Debug(fmt.Sprintf("ODR: validating trie root %08x key %08x", self.Id.Root[:4], self.Key[:4])) +func (r *TrieRequest) Valid(db ethdb.Database, msg *Msg) error { + log.Debug("Validating trie proof", "root", r.Id.Root, "key", r.Key) + // Ensure we have a correct message with a single proof if msg.MsgType != MsgProofs { - log.Debug(fmt.Sprintf("ODR: invalid message type")) - return false + return errInvalidMessageType } proofs := msg.Obj.([][]rlp.RawValue) if len(proofs) != 1 { - log.Debug(fmt.Sprintf("ODR: invalid number of entries: %d", len(proofs))) - return false + return errMultipleEntries } - _, err := trie.VerifyProof(self.Id.Root, self.Key, proofs[0]) - if err != nil { - log.Debug(fmt.Sprintf("ODR: merkle proof verification error: %v", err)) - return false + // Verify the proof and store if checks out + if _, err := trie.VerifyProof(r.Id.Root, r.Key, proofs[0]); err != nil { + return fmt.Errorf("merkle proof verification failed: %v", err) } - self.Proof = proofs[0] - log.Debug(fmt.Sprintf("ODR: validation successful")) - return true + r.Proof = proofs[0] + return nil } type CodeReq struct { @@ -233,47 +237,47 @@ type CodeRequest light.CodeRequest // GetCost returns the cost of the given ODR request according to the serving // peer's cost table (implementation of LesOdrRequest) -func (self *CodeRequest) GetCost(peer *peer) uint64 { +func (r *CodeRequest) GetCost(peer *peer) uint64 { return peer.GetRequestCost(GetCodeMsg, 1) } // CanSend tells if a certain peer is suitable for serving the given request -func (self *CodeRequest) CanSend(peer *peer) bool { - return peer.HasBlock(self.Id.BlockHash, self.Id.BlockNumber) +func (r *CodeRequest) CanSend(peer *peer) bool { + return peer.HasBlock(r.Id.BlockHash, r.Id.BlockNumber) } // Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (self *CodeRequest) Request(reqID uint64, peer *peer) error { - log.Debug(fmt.Sprintf("ODR: requesting node data for hash %08x from peer %v", self.Hash[:4], peer.id)) +func (r *CodeRequest) Request(reqID uint64, peer *peer) error { + peer.Log().Debug("Requesting code data", "hash", r.Hash) req := &CodeReq{ - BHash: self.Id.BlockHash, - AccKey: self.Id.AccKey, + BHash: r.Id.BlockHash, + AccKey: r.Id.AccKey, } - return peer.RequestCode(reqID, self.GetCost(peer), []*CodeReq{req}) + return peer.RequestCode(reqID, r.GetCost(peer), []*CodeReq{req}) } // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (self *CodeRequest) Valid(db ethdb.Database, msg *Msg) bool { - log.Debug(fmt.Sprintf("ODR: validating node data for hash %08x", self.Hash[:4])) +func (r *CodeRequest) Valid(db ethdb.Database, msg *Msg) error { + log.Debug("Validating code data", "hash", r.Hash) + + // Ensure we have a correct message with a single code element if msg.MsgType != MsgCode { - log.Debug(fmt.Sprintf("ODR: invalid message type")) - return false + return errInvalidMessageType } reply := msg.Obj.([][]byte) if len(reply) != 1 { - log.Debug(fmt.Sprintf("ODR: invalid number of entries: %d", len(reply))) - return false + return errMultipleEntries } data := reply[0] - if hash := crypto.Keccak256Hash(data); self.Hash != hash { - log.Debug(fmt.Sprintf("ODR: requested hash %08x does not match received data hash %08x", self.Hash[:4], hash[:4])) - return false + + // Verify the data and store if checks out + if hash := crypto.Keccak256Hash(data); r.Hash != hash { + return errDataHashMismatch } - self.Data = data - log.Debug(fmt.Sprintf("ODR: validation successful")) - return true + r.Data = data + return nil } type ChtReq struct { @@ -290,64 +294,63 @@ type ChtRequest light.ChtRequest // GetCost returns the cost of the given ODR request according to the serving // peer's cost table (implementation of LesOdrRequest) -func (self *ChtRequest) GetCost(peer *peer) uint64 { +func (r *ChtRequest) GetCost(peer *peer) uint64 { return peer.GetRequestCost(GetHeaderProofsMsg, 1) } // CanSend tells if a certain peer is suitable for serving the given request -func (self *ChtRequest) CanSend(peer *peer) bool { +func (r *ChtRequest) CanSend(peer *peer) bool { peer.lock.RLock() defer peer.lock.RUnlock() - return self.ChtNum <= (peer.headInfo.Number-light.ChtConfirmations)/light.ChtFrequency + return r.ChtNum <= (peer.headInfo.Number-light.ChtConfirmations)/light.ChtFrequency } // Request sends an ODR request to the LES network (implementation of LesOdrRequest) -func (self *ChtRequest) Request(reqID uint64, peer *peer) error { - log.Debug(fmt.Sprintf("ODR: requesting CHT #%d block #%d from peer %v", self.ChtNum, self.BlockNum, peer.id)) +func (r *ChtRequest) Request(reqID uint64, peer *peer) error { + peer.Log().Debug("Requesting CHT", "cht", r.ChtNum, "block", r.BlockNum) req := &ChtReq{ - ChtNum: self.ChtNum, - BlockNum: self.BlockNum, + ChtNum: r.ChtNum, + BlockNum: r.BlockNum, } - return peer.RequestHeaderProofs(reqID, self.GetCost(peer), []*ChtReq{req}) + return peer.RequestHeaderProofs(reqID, r.GetCost(peer), []*ChtReq{req}) } // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (self *ChtRequest) Valid(db ethdb.Database, msg *Msg) bool { - log.Debug(fmt.Sprintf("ODR: validating CHT #%d block #%d", self.ChtNum, self.BlockNum)) +func (r *ChtRequest) Valid(db ethdb.Database, msg *Msg) error { + log.Debug("Validating CHT", "cht", r.ChtNum, "block", r.BlockNum) + // Ensure we have a correct message with a single proof element if msg.MsgType != MsgHeaderProofs { - log.Debug(fmt.Sprintf("ODR: invalid message type")) - return false + return errInvalidMessageType } proofs := msg.Obj.([]ChtResp) if len(proofs) != 1 { - log.Debug(fmt.Sprintf("ODR: invalid number of entries: %d", len(proofs))) - return false + return errMultipleEntries } proof := proofs[0] + + // Verify the CHT var encNumber [8]byte - binary.BigEndian.PutUint64(encNumber[:], self.BlockNum) - value, err := trie.VerifyProof(self.ChtRoot, encNumber[:], proof.Proof) + binary.BigEndian.PutUint64(encNumber[:], r.BlockNum) + + value, err := trie.VerifyProof(r.ChtRoot, encNumber[:], proof.Proof) if err != nil { - log.Debug(fmt.Sprintf("ODR: CHT merkle proof verification error: %v", err)) - return false + return err } var node light.ChtNode if err := rlp.DecodeBytes(value, &node); err != nil { - log.Debug(fmt.Sprintf("ODR: error decoding CHT node: %v", err)) - return false + return err } if node.Hash != proof.Header.Hash() { - log.Debug(fmt.Sprintf("ODR: CHT header hash does not match")) - return false + return errCHTHashMismatch } + // Verifications passed, store and return + r.Header = proof.Header + r.Proof = proof.Proof + r.Td = node.Td - self.Proof = proof.Proof - self.Header = proof.Header - self.Td = node.Td - log.Debug(fmt.Sprintf("ODR: validation successful")) - return true + return nil } diff --git a/les/peer.go b/les/peer.go index 4d00f3df9b..ef5f8a6ce2 100644 --- a/les/peer.go +++ b/les/peer.go @@ -27,7 +27,6 @@ import ( "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/les/flowcontrol" - "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/rlp" ) @@ -195,51 +194,51 @@ func (p *peer) SendHeaderProofs(reqID, bv uint64, proofs []ChtResp) error { // RequestHeadersByHash fetches a batch of blocks' headers corresponding to the // specified header query, based on the hash of an origin block. func (p *peer) RequestHeadersByHash(reqID, cost uint64, origin common.Hash, amount int, skip int, reverse bool) error { - log.Debug(fmt.Sprintf("%v fetching %d headers from %x, skipping %d (reverse = %v)", p, amount, origin[:4], skip, reverse)) + p.Log().Debug("Fetching batch of headers", "count", amount, "fromhash", origin, "skip", skip, "reverse", reverse) return sendRequest(p.rw, GetBlockHeadersMsg, reqID, cost, &getBlockHeadersData{Origin: hashOrNumber{Hash: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}) } // RequestHeadersByNumber fetches a batch of blocks' headers corresponding to the // specified header query, based on the number of an origin block. func (p *peer) RequestHeadersByNumber(reqID, cost, origin uint64, amount int, skip int, reverse bool) error { - log.Debug(fmt.Sprintf("%v fetching %d headers from #%d, skipping %d (reverse = %v)", p, amount, origin, skip, reverse)) + p.Log().Debug("Fetching batch of headers", "count", amount, "fromnum", origin, "skip", skip, "reverse", reverse) return sendRequest(p.rw, GetBlockHeadersMsg, reqID, cost, &getBlockHeadersData{Origin: hashOrNumber{Number: origin}, Amount: uint64(amount), Skip: uint64(skip), Reverse: reverse}) } // RequestBodies fetches a batch of blocks' bodies corresponding to the hashes // specified. func (p *peer) RequestBodies(reqID, cost uint64, hashes []common.Hash) error { - log.Debug(fmt.Sprintf("%v fetching %d block bodies", p, len(hashes))) + p.Log().Debug("Fetching batch of block bodies", "count", len(hashes)) return sendRequest(p.rw, GetBlockBodiesMsg, reqID, cost, hashes) } // RequestCode fetches a batch of arbitrary data from a node's known state // data, corresponding to the specified hashes. func (p *peer) RequestCode(reqID, cost uint64, reqs []*CodeReq) error { - log.Debug(fmt.Sprintf("%v fetching %v state data", p, len(reqs))) + p.Log().Debug("Fetching batch of codes", "count", len(reqs)) return sendRequest(p.rw, GetCodeMsg, reqID, cost, reqs) } // RequestReceipts fetches a batch of transaction receipts from a remote node. func (p *peer) RequestReceipts(reqID, cost uint64, hashes []common.Hash) error { - log.Debug(fmt.Sprintf("%v fetching %v receipts", p, len(hashes))) + p.Log().Debug("Fetching batch of receipts", "count", len(hashes)) return sendRequest(p.rw, GetReceiptsMsg, reqID, cost, hashes) } // RequestProofs fetches a batch of merkle proofs from a remote node. func (p *peer) RequestProofs(reqID, cost uint64, reqs []*ProofReq) error { - log.Debug(fmt.Sprintf("%v fetching %v proofs", p, len(reqs))) + p.Log().Debug("Fetching batch of proofs", "count", len(reqs)) return sendRequest(p.rw, GetProofsMsg, reqID, cost, reqs) } // RequestHeaderProofs fetches a batch of header merkle proofs from a remote node. func (p *peer) RequestHeaderProofs(reqID, cost uint64, reqs []*ChtReq) error { - log.Debug(fmt.Sprintf("%v fetching %v header proofs", p, len(reqs))) + p.Log().Debug("Fetching batch of header proofs", "count", len(reqs)) return sendRequest(p.rw, GetHeaderProofsMsg, reqID, cost, reqs) } func (p *peer) SendTxs(cost uint64, txs types.Transactions) error { - log.Debug(fmt.Sprintf("%v relaying %v txs", p, len(txs))) + p.Log().Debug("Fetching batch of transactions", "count", len(txs)) reqID := getNextReqID() p.fcServer.MustAssignRequest(reqID) p.fcServer.SendRequest(reqID, cost) diff --git a/les/server.go b/les/server.go index b04c9c4ca4..04bfa02926 100644 --- a/les/server.go +++ b/les/server.go @@ -19,7 +19,6 @@ package les import ( "encoding/binary" - "fmt" "math" "sync" "time" @@ -292,7 +291,7 @@ func (pm *ProtocolManager) blockLoop() { lastHead = header lastBroadcastTd = td - log.Debug(fmt.Sprint("===> ", number, hash, td, reorg)) + log.Debug("Announcing block to peers", "number", number, "hash", hash, "td", td, "reorg", reorg) announce := announceData{Hash: hash, Number: number, Td: td, ReorgDepth: reorg} for _, p := range peers { @@ -396,7 +395,7 @@ func makeCht(db ethdb.Database) bool { } else { lastChtNum++ - log.Trace(fmt.Sprintf("cht: %d %064x", lastChtNum, root)) + log.Trace("Generated CHT", "number", lastChtNum, "root", root.Hex()) storeChtRoot(db, lastChtNum, root) var data [8]byte diff --git a/les/serverpool.go b/les/serverpool.go index 95a8242b32..55d481dbf4 100644 --- a/les/serverpool.go +++ b/les/serverpool.go @@ -162,7 +162,7 @@ func (pool *serverPool) connect(p *peer, ip net.IP, port uint16) *poolEntry { if entry == nil { entry = pool.findOrNewNode(p.ID(), ip, port) } - log.Debug(fmt.Sprintf("connecting to %v, state: %v", p.id, entry.state)) + p.Log().Debug("Connecting to new peer", "state", entry.state) if entry.state == psConnected || entry.state == psRegistered { return nil } @@ -184,7 +184,7 @@ func (pool *serverPool) connect(p *peer, ip net.IP, port uint16) *poolEntry { // registered should be called after a successful handshake func (pool *serverPool) registered(entry *poolEntry) { - log.Debug(fmt.Sprintf("registered %v", entry.id.String())) + log.Debug("Registered new entry", "enode", entry.id) pool.lock.Lock() defer pool.lock.Unlock() @@ -202,7 +202,7 @@ func (pool *serverPool) registered(entry *poolEntry) { // can be updated optionally (not updated if no registration happened, in this case // only connection statistics are updated, just like in case of timeout) func (pool *serverPool) disconnect(entry *poolEntry) { - log.Debug(fmt.Sprintf("disconnected %v", entry.id.String())) + log.Debug("Disconnected old entry", "enode", entry.id) pool.lock.Lock() defer pool.lock.Unlock() @@ -418,7 +418,7 @@ func (pool *serverPool) findOrNewNode(id discover.NodeID, ip net.IP, port uint16 now := mclock.Now() entry := pool.entries[id] if entry == nil { - log.Debug(fmt.Sprintf("discovered %v", id.String())) + log.Debug("Discovered new entry", "id", id) entry = &poolEntry{ id: id, addr: make(map[string]*poolEntryAddress), @@ -459,11 +459,15 @@ func (pool *serverPool) loadNodes() { var list []*poolEntry err = rlp.DecodeBytes(enc, &list) if err != nil { - log.Debug(fmt.Sprintf("node list decode error: %v", err)) + log.Debug("Failed to decode node list", "err", err) return } for _, e := range list { - log.Debug(fmt.Sprintf("loaded server stats %016x fails: %v connStats: %v / %v delayStats: %v / %v responseStats: %v / %v timeoutStats: %v / %v", e.id[0:8], e.lastConnected.fails, e.connectStats.avg, e.connectStats.weight, time.Duration(e.delayStats.avg), e.delayStats.weight, time.Duration(e.responseStats.avg), e.responseStats.weight, e.timeoutStats.avg, e.timeoutStats.weight)) + log.Debug("Loaded server stats", "id", e.id, "fails", e.lastConnected.fails, + "conn", fmt.Sprintf("%v/%v", e.connectStats.avg, e.connectStats.weight), + "delay", fmt.Sprintf("%v/%v", time.Duration(e.delayStats.avg), e.delayStats.weight), + "response", fmt.Sprintf("%v/%v", time.Duration(e.responseStats.avg), e.responseStats.weight), + "timeout", fmt.Sprintf("%v/%v", e.timeoutStats.avg, e.timeoutStats.weight)) pool.entries[e.id] = e pool.knownQueue.setLatest(e) pool.knownSelect.update((*knownEntry)(e)) @@ -568,7 +572,7 @@ func (pool *serverPool) dial(entry *poolEntry, knownSelected bool) { pool.newSelected++ } addr := entry.addrSelect.choose().(*poolEntryAddress) - log.Debug(fmt.Sprintf("dialing %v out of %v, known: %v", entry.id.String()+"@"+addr.strKey(), len(entry.addr), knownSelected)) + log.Debug("Dialing new peer", "lesaddr", entry.id.String()+"@"+addr.strKey(), "set", len(entry.addr), "known", knownSelected) entry.dialed = addr go func() { pool.server.AddPeer(discover.NewNode(entry.id, addr.ip, addr.port, addr.port)) @@ -589,7 +593,7 @@ func (pool *serverPool) checkDialTimeout(entry *poolEntry) { if entry.state != psDialed { return } - log.Debug(fmt.Sprintf("timeout %v", entry.id.String()+"@"+entry.dialed.strKey())) + log.Debug("Dial timeout", "lesaddr", entry.id.String()+"@"+entry.dialed.strKey()) entry.state = psNotConnected if entry.knownSelected { pool.knownSelected-- diff --git a/light/lightchain.go b/light/lightchain.go index 1f0fb9c345..773c0f38be 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -17,11 +17,9 @@ package light import ( - "fmt" "math/big" "sync" "sync/atomic" - "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" @@ -101,7 +99,7 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux if err != nil { return nil, err } - log.Info(fmt.Sprint("WARNING: Wrote default ethereum genesis block")) + log.Warn("Wrote default ethereum genesis block") } if bc.genesisBlock.Hash() == (common.Hash{212, 229, 103, 64, 248, 118, 174, 248, 192, 16, 184, 106, 64, 213, 245, 103, 69, 161, 24, 208, 144, 106, 52, 230, 154, 236, 140, 13, 177, 203, 143, 163}) { @@ -117,7 +115,7 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux Root: common.HexToHash("c035076523faf514038f619715de404a65398c51899b5dccca9c05b00bc79315"), }) } - log.Info(fmt.Sprint("Added trusted CHT for mainnet")) + log.Info("Added trusted CHT for mainnet") } else { if bc.genesisBlock.Hash() == (common.Hash{12, 215, 134, 162, 66, 93, 22, 241, 82, 198, 88, 49, 108, 66, 62, 108, 225, 24, 30, 21, 195, 41, 88, 38, 215, 201, 144, 76, 186, 156, 227, 3}) { // add trusted CHT for testnet @@ -125,7 +123,7 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux Number: 452, Root: common.HexToHash("511da2c88e32b14cf4a4e62f7fcbb297139faebc260a4ab5eb43cce6edcba324"), }) - log.Info(fmt.Sprint("Added trusted CHT for testnet")) + log.Info("Added trusted CHT for testnet") } else { DeleteTrustedCht(bc.chainDb) } @@ -137,9 +135,9 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux // Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain for hash := range core.BadHashes { if header := bc.GetHeaderByHash(hash); header != nil { - log.Error(fmt.Sprintf("Found bad hash, rewinding chain to block #%d [%x…]", header.Number, header.ParentHash[:4])) + log.Error("Found bad hash, rewinding chain", "number", header.Number, "hash", header.ParentHash) bc.SetHead(header.Number.Uint64() - 1) - log.Error(fmt.Sprint("Chain rewind was successful, resuming normal operation")) + log.Error("Chain rewind was successful, resuming normal operation") } } return bc, nil @@ -169,7 +167,7 @@ func (self *LightChain) loadLastState() error { // Issue a status log and return header := self.hc.CurrentHeader() headerTd := self.GetTd(header.Hash(), header.Number.Uint64()) - log.Info(fmt.Sprintf("Last header: #%d [%x…] TD=%v", self.hc.CurrentHeader().Number, self.hc.CurrentHeader().Hash().Bytes()[:4], headerTd)) + log.Info("Loaded most recent local header", "number", header.Number, "hash", header.Hash(), "td", headerTd) return nil } @@ -246,10 +244,10 @@ func (bc *LightChain) ResetWithGenesisBlock(genesis *types.Block) { // Prepare the genesis block and reinitialise the chain if err := core.WriteTd(bc.chainDb, genesis.Hash(), genesis.NumberU64(), genesis.Difficulty()); err != nil { - log.Crit(fmt.Sprintf("failed to write genesis block TD: %v", err)) + log.Crit("Failed to write genesis block TD", "err", err) } if err := core.WriteBlock(bc.chainDb, genesis); err != nil { - log.Crit(fmt.Sprintf("failed to write genesis block: %v", err)) + log.Crit("Failed to write genesis block", "err", err) } bc.genesisBlock = genesis bc.hc.SetGenesis(bc.genesisBlock.Header()) @@ -345,8 +343,7 @@ func (bc *LightChain) Stop() { atomic.StoreInt32(&bc.procInterrupt, 1) bc.wg.Wait() - - log.Info(fmt.Sprint("Chain manager stopped")) + log.Info("Blockchain manager stopped") } // Rollback is designed to remove a chain of links from the database that aren't @@ -406,21 +403,16 @@ func (self *LightChain) InsertHeaderChain(chain []*types.Header, checkFreq int) switch status { case core.CanonStatTy: - log.Debug("", "msg", log.Lazy{Fn: func() string { - return fmt.Sprintf("[%v] inserted header #%d (%x...).\n", time.Now().UnixNano(), header.Number, header.Hash().Bytes()[0:4]) - }}) + log.Debug("Inserted new header", "number", header.Number, "hash", header.Hash()) events = append(events, core.ChainEvent{Block: types.NewBlockWithHeader(header), Hash: header.Hash()}) case core.SideStatTy: - log.Trace("", "msg", log.Lazy{Fn: func() string { - return fmt.Sprintf("inserted forked header #%d (TD=%v) (%x...).\n", header.Number, header.Difficulty, header.Hash().Bytes()[0:4]) - }}) + log.Debug("Inserted forked header", "number", header.Number, "hash", header.Hash()) events = append(events, core.ChainSideEvent{Block: types.NewBlockWithHeader(header)}) case core.SplitStatTy: events = append(events, core.ChainSplitEvent{Block: types.NewBlockWithHeader(header)}) } - return err } i, err := self.hc.InsertHeaderChain(chain, checkFreq, whFunc) diff --git a/light/odr_util.go b/light/odr_util.go index e7f94db10c..17e9aadcb2 100644 --- a/light/odr_util.go +++ b/light/odr_util.go @@ -19,7 +19,6 @@ package light import ( "bytes" "errors" - "fmt" "math/big" "github.com/ethereum/go-ethereum/common" @@ -27,7 +26,6 @@ import ( "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/rlp" "golang.org/x/net/context" ) @@ -149,7 +147,6 @@ func GetBody(ctx context.Context, odr OdrBackend, hash common.Hash, number uint6 } body := new(types.Body) if err := rlp.Decode(bytes.NewReader(data), body); err != nil { - log.Error(fmt.Sprintf("invalid block body RLP for hash %x: %v", hash, err)) return nil, err } return body, nil @@ -181,7 +178,6 @@ func GetBlockReceipts(ctx context.Context, odr OdrBackend, hash common.Hash, num r := &ReceiptsRequest{Hash: hash, Number: number} if err := odr.Retrieve(ctx, r); err != nil { return nil, err - } else { - return r.Receipts, nil } + return r.Receipts, nil } diff --git a/light/state.go b/light/state.go index 1fb583c1d7..d3e047ef47 100644 --- a/light/state.go +++ b/light/state.go @@ -17,12 +17,10 @@ package light import ( - "fmt" "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/log" "golang.org/x/net/context" ) @@ -239,10 +237,6 @@ func (self *LightState) GetOrNewStateObject(ctx context.Context, addr common.Add // newStateObject creates a state object whether it exists in the state or not func (self *LightState) newStateObject(addr common.Address) *StateObject { - log.Debug("", "msg", log.Lazy{Fn: func() string { - return fmt.Sprintf("(+) %x\n", addr) - }}) - stateObject := NewStateObject(addr, self.odr) self.stateObjects[addr.Str()] = stateObject diff --git a/light/state_object.go b/light/state_object.go index d023270d5f..f33ba217e9 100644 --- a/light/state_object.go +++ b/light/state_object.go @@ -23,7 +23,6 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/rlp" "golang.org/x/net/context" ) @@ -107,10 +106,6 @@ func NewStateObject(address common.Address, odr OdrBackend) *StateObject { func (self *StateObject) MarkForDeletion() { self.remove = true self.dirty = true - - log.Debug("", "msg", log.Lazy{Fn: func() string { - return fmt.Sprintf("%x: #%d %v X\n", self.Address(), self.nonce, self.balance) - }}) } // getAddr gets the storage value at the given address from the trie @@ -156,19 +151,11 @@ func (self *StateObject) SetState(k, value common.Hash) { // AddBalance adds the given amount to the account balance func (c *StateObject) AddBalance(amount *big.Int) { c.SetBalance(new(big.Int).Add(c.balance, amount)) - - log.Debug("", "msg", log.Lazy{Fn: func() string { - return fmt.Sprintf("%x: #%d %v (+ %v)\n", c.Address(), c.nonce, c.balance, amount) - }}) } // SubBalance subtracts the given amount from the account balance func (c *StateObject) SubBalance(amount *big.Int) { c.SetBalance(new(big.Int).Sub(c.balance, amount)) - - log.Debug("", "msg", log.Lazy{Fn: func() string { - return fmt.Sprintf("%x: #%d %v (- %v)\n", c.Address(), c.nonce, c.balance, amount) - }}) } // SetBalance sets the account balance to the given amount diff --git a/light/txpool.go b/light/txpool.go index ecd6cfa265..28c8d8ca5b 100644 --- a/light/txpool.go +++ b/light/txpool.go @@ -320,7 +320,7 @@ func (pool *TxPool) eventLoop() { func (pool *TxPool) Stop() { close(pool.quit) pool.events.Unsubscribe() - log.Info(fmt.Sprint("Transaction pool stopped")) + log.Info("Transaction pool stopped") } // Stats returns the number of currently pending (locally created) transactions @@ -416,20 +416,8 @@ func (self *TxPool) add(ctx context.Context, tx *types.Transaction) error { go self.eventMux.Post(core.TxPreEvent{Tx: tx}) } - log.Debug("", "msg", log.Lazy{Fn: func() string { - var toname string - if to := tx.To(); to != nil { - toname = common.Bytes2Hex(to[:4]) - } else { - toname = "[NEW_CONTRACT]" - } - // we can ignore the error here because From is - // verified in ValidateTransaction. - f, _ := types.Sender(self.signer, tx) - from := common.Bytes2Hex(f[:4]) - return fmt.Sprintf("(t) %x => %s (%v) %x\n", from, toname, tx.Value(), hash) - }}) - + // Print a log message if low enough level is set + log.Debug("Pooled new transaction", "hash", hash, "from", log.Lazy{Fn: func() common.Address { from, _ := types.Sender(self.signer, tx); return from }}, "to", tx.To()) return nil } @@ -462,15 +450,10 @@ func (self *TxPool) AddBatch(ctx context.Context, txs []*types.Transaction) { var sendTx types.Transactions for _, tx := range txs { - if err := self.add(ctx, tx); err != nil { - log.Debug(fmt.Sprint("tx error:", err)) - } else { + if err := self.add(ctx, tx); err == nil { sendTx = append(sendTx, tx) - h := tx.Hash() - log.Debug(fmt.Sprintf("tx %x\n", h[:4])) } } - if len(sendTx) > 0 { self.relay.Send(sendTx) } diff --git a/metrics/metrics.go b/metrics/metrics.go index fe400b2b9a..9906bb8ad2 100644 --- a/metrics/metrics.go +++ b/metrics/metrics.go @@ -18,7 +18,6 @@ package metrics import ( - "fmt" "os" "runtime" "strings" @@ -41,7 +40,7 @@ var Enabled = false func init() { for _, arg := range os.Args { if strings.TrimLeft(arg, "-") == MetricsEnabledFlag { - log.Info(fmt.Sprintf("Enabling metrics collection")) + log.Info("Enabling metrics collection") Enabled = true } } @@ -102,7 +101,7 @@ func CollectProcessMetrics(refresh time.Duration) { diskWrites = metrics.GetOrRegisterMeter("system/disk/writecount", metrics.DefaultRegistry) diskWriteBytes = metrics.GetOrRegisterMeter("system/disk/writedata", metrics.DefaultRegistry) } else { - log.Debug(fmt.Sprintf("failed to read disk metrics: %v", err)) + log.Debug("Failed to read disk metrics", "err", err) } // Iterate loading the different stats and updating the meters for i := 1; ; i++ { From db2698c87cd80246c38340045181d2e8b326bc79 Mon Sep 17 00:00:00 2001 From: ligi Date: Sat, 4 Mar 2017 21:14:40 +0100 Subject: [PATCH 02/57] mobile: Fix typo ( Ethereun -> Ethereum ) --- mobile/doc.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mobile/doc.go b/mobile/doc.go index 89be470cce..64d47bec2a 100644 --- a/mobile/doc.go +++ b/mobile/doc.go @@ -16,7 +16,7 @@ // Package geth contains the simplified mobile APIs to go-ethereum. // -// The scope of this package is *not* to allow writing a custom Ethereun client +// The scope of this package is *not* to allow writing a custom Ethereum client // with pieces plucked from go-ethereum, rather to allow writing native dapps on // mobile platforms. Keep this in mind when using or extending this package! // From 9c4fd4e9c9c9e7a8acfc5bafa74f6a49af1fbf16 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Sun, 26 Feb 2017 23:52:10 +0100 Subject: [PATCH 03/57] Makefile: add devtools target --- Makefile | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Makefile b/Makefile index 4bd5612be5..07bacba65a 100644 --- a/Makefile +++ b/Makefile @@ -40,6 +40,15 @@ test: all clean: rm -fr build/_workspace/pkg/ $(GOBIN)/* +# The devtools target installs tools required for 'go generate'. +# You need to put $GOBIN (or $GOPATH/bin) in your PATH to use 'go generate'. + +devtools: + go get -u golang.org/x/tools/cmd/stringer + go get -u github.com/jteeuwen/go-bindata/go-bindata + go get -u github.com/fjl/gencodec + go install ./cmd/abigen + # Cross Compilation Targets (xgo) geth-cross: geth-linux geth-darwin geth-windows geth-android geth-ios From 667cd518ceada7084698c8ea11d966db9f9e674a Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 7 Mar 2017 01:48:52 +0100 Subject: [PATCH 04/57] internal/jsre/deps: ensure that go generate produces no changes --- internal/jsre/deps/bindata.go | 4 ++-- internal/jsre/deps/deps.go | 3 ++- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/internal/jsre/deps/bindata.go b/internal/jsre/deps/bindata.go index 5f6a2b873a..782d4df808 100644 --- a/internal/jsre/deps/bindata.go +++ b/internal/jsre/deps/bindata.go @@ -84,7 +84,7 @@ func bignumberJs() (*asset, error) { return nil, err } - info := bindataFileInfo{name: "bignumber.js", size: 17314, mode: os.FileMode(420), modTime: time.Unix(1484232218, 0)} + info := bindataFileInfo{name: "bignumber.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} a := &asset{bytes: bytes, info: info} return a, nil } @@ -104,7 +104,7 @@ func web3Js() (*asset, error) { return nil, err } - info := bindataFileInfo{name: "web3.js", size: 491740, mode: os.FileMode(420), modTime: time.Unix(1484232456, 0)} + info := bindataFileInfo{name: "web3.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)} a := &asset{bytes: bytes, info: info} return a, nil } diff --git a/internal/jsre/deps/deps.go b/internal/jsre/deps/deps.go index 8d0e1a4000..fe2e6f2fad 100644 --- a/internal/jsre/deps/deps.go +++ b/internal/jsre/deps/deps.go @@ -17,4 +17,5 @@ // Package deps contains the console JavaScript dependencies Go embedded. package deps -//go:generate go-bindata -o bindata.go bignumber.js web3.js +//go:generate go-bindata -nometadata -pkg deps -o bindata.go bignumber.js web3.js +//go:generate gofmt -w -s bindata.go From eee96a5bb7439ccee583d23e53be018fe7c35cfb Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 7 Mar 2017 12:37:53 +0100 Subject: [PATCH 05/57] rlp: add support for "-" struct tag --- rlp/decode.go | 16 ++++++++++------ rlp/decode_test.go | 13 +++++++++++++ rlp/encode_test.go | 1 + rlp/typecache.go | 8 +++++++- 4 files changed, 31 insertions(+), 7 deletions(-) diff --git a/rlp/decode.go b/rlp/decode.go index c4e5869cc9..ee0b7dbcd3 100644 --- a/rlp/decode.go +++ b/rlp/decode.go @@ -63,12 +63,16 @@ type Decoder interface { // must contain an element for each decoded field. Decode returns an // error if there are too few or too many elements. // -// The decoding of struct fields honours two struct tags, "tail" and -// "nil". For an explanation of "tail", see the example. -// The "nil" tag applies to pointer-typed fields and changes the -// decoding rules for the field such that input values of size zero -// decode as a nil pointer. This tag can be useful when decoding -// recursive types. +// The decoding of struct fields honours certain struct tags, "tail", +// "nil" and "-". +// +// The "-" tag ignores fields. +// +// For an explanation of "tail", see the example. +// +// The "nil" tag applies to pointer-typed fields and changes the decoding +// rules for the field such that input values of size zero decode as a nil +// pointer. This tag can be useful when decoding recursive types. // // type StructWithEmptyOK struct { // Foo *[20]byte `rlp:"nil"` diff --git a/rlp/decode_test.go b/rlp/decode_test.go index 2d465b74dc..d762e195d0 100644 --- a/rlp/decode_test.go +++ b/rlp/decode_test.go @@ -339,6 +339,12 @@ var ( ) ) +type hasIgnoredField struct { + A uint + B uint `rlp:"-"` + C uint +} + var decodeTests = []decodeTest{ // booleans {input: "01", ptr: new(bool), value: true}, @@ -490,6 +496,13 @@ var decodeTests = []decodeTest{ value: tailRaw{A: 1, Tail: []RawValue{}}, }, + // struct tag "-" + { + input: "C20102", + ptr: new(hasIgnoredField), + value: hasIgnoredField{A: 1, C: 2}, + }, + // RawValue {input: "01", ptr: new(RawValue), value: RawValue(unhex("01"))}, {input: "82FFFF", ptr: new(RawValue), value: RawValue(unhex("82FFFF"))}, diff --git a/rlp/encode_test.go b/rlp/encode_test.go index 6f38294e46..827960f7c1 100644 --- a/rlp/encode_test.go +++ b/rlp/encode_test.go @@ -218,6 +218,7 @@ var encTests = []encTest{ {val: &tailRaw{A: 1, Tail: []RawValue{unhex("02")}}, output: "C20102"}, {val: &tailRaw{A: 1, Tail: []RawValue{}}, output: "C101"}, {val: &tailRaw{A: 1, Tail: nil}, output: "C101"}, + {val: &hasIgnoredField{A: 1, B: 2, C: 3}, output: "C20103"}, // nil {val: (*uint)(nil), output: "80"}, diff --git a/rlp/typecache.go b/rlp/typecache.go index a2f217c66f..3df799e1ec 100644 --- a/rlp/typecache.go +++ b/rlp/typecache.go @@ -37,11 +37,12 @@ type typeinfo struct { type tags struct { // rlp:"nil" controls whether empty input results in a nil pointer. nilOK bool - // rlp:"tail" controls whether this field swallows additional list // elements. It can only be set for the last field, which must be // of slice type. tail bool + // rlp:"-" ignores fields. + ignored bool } type typekey struct { @@ -101,6 +102,9 @@ func structFields(typ reflect.Type) (fields []field, err error) { if err != nil { return nil, err } + if tags.ignored { + continue + } info, err := cachedTypeInfo1(f.Type, tags) if err != nil { return nil, err @@ -117,6 +121,8 @@ func parseStructTag(typ reflect.Type, fi int) (tags, error) { for _, t := range strings.Split(f.Tag.Get("rlp"), ",") { switch t = strings.TrimSpace(t); t { case "": + case "-": + ts.ignored = true case "nil": ts.nilOK = true case "tail": From 8cf08e4b25c4cd0e0955598342394f34feecca0c Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 23 Feb 2017 17:58:15 +0100 Subject: [PATCH 06/57] core/types: use gencodec for JSON marshaling code --- core/types/block.go | 123 ++++++----------------------- core/types/gen_header_json.go | 136 +++++++++++++++++++++++++++++++++ core/types/gen_log_json.go | 90 ++++++++++++++++++++++ core/types/gen_receipt_json.go | 79 +++++++++++++++++++ core/types/gen_tx_json.go | 99 ++++++++++++++++++++++++ core/types/log.go | 99 +++++++----------------- core/types/log_test.go | 3 +- core/types/receipt.go | 78 +++---------------- core/types/transaction.go | 107 +++++++++----------------- 9 files changed, 506 insertions(+), 308 deletions(-) create mode 100644 core/types/gen_header_json.go create mode 100644 core/types/gen_log_json.go create mode 100644 core/types/gen_receipt_json.go create mode 100644 core/types/gen_tx_json.go diff --git a/core/types/block.go b/core/types/block.go index 1dae87962a..b699ba6862 100644 --- a/core/types/block.go +++ b/core/types/block.go @@ -19,8 +19,6 @@ package types import ( "encoding/binary" - "encoding/json" - "errors" "fmt" "io" "math/big" @@ -39,12 +37,6 @@ var ( EmptyUncleHash = CalcUncleHash(nil) ) -var ( - errMissingHeaderMixDigest = errors.New("missing mixHash in JSON block header") - errMissingHeaderFields = errors.New("missing required JSON block header fields") - errBadNonceSize = errors.New("invalid block nonce size, want 8 bytes") -) - // A BlockNonce is a 64-bit hash which proves (combined with the // mix-hash) that a sufficient amount of computation has been carried // out on a block. @@ -72,41 +64,35 @@ func (n *BlockNonce) UnmarshalText(input []byte) error { return hexutil.UnmarshalFixedText("BlockNonce", input, n[:]) } +//go:generate gencodec -type Header -field-override headerMarshaling -out gen_header_json.go + // Header represents a block header in the Ethereum blockchain. type Header struct { - ParentHash common.Hash // Hash to the previous block - UncleHash common.Hash // Uncles of this block - Coinbase common.Address // The coin base address - Root common.Hash // Block Trie state - TxHash common.Hash // Tx sha - ReceiptHash common.Hash // Receipt sha - Bloom Bloom // Bloom - Difficulty *big.Int // Difficulty for the current block - Number *big.Int // The block number - GasLimit *big.Int // Gas limit - GasUsed *big.Int // Gas used - Time *big.Int // Creation time - Extra []byte // Extra data - MixDigest common.Hash // for quick difficulty verification - Nonce BlockNonce + ParentHash common.Hash `json:"parentHash"` + UncleHash common.Hash `json:"sha3Uncles"` + Coinbase common.Address `json:"miner"` + Root common.Hash `json:"stateRoot"` + TxHash common.Hash `json:"transactionsRoot"` + ReceiptHash common.Hash `json:"receiptsRoot"` + Bloom Bloom `json:"logsBloom"` + Difficulty *big.Int `json:"difficulty"` + Number *big.Int `json:"number"` + GasLimit *big.Int `json:"gasLimit"` + GasUsed *big.Int `json:"gasUsed"` + Time *big.Int `json:"timestamp"` + Extra []byte `json:"extraData"` + MixDigest common.Hash `json:"mixHash"` + Nonce BlockNonce `json:"nonce"` } -type jsonHeader struct { - ParentHash *common.Hash `json:"parentHash"` - UncleHash *common.Hash `json:"sha3Uncles"` - Coinbase *common.Address `json:"miner"` - Root *common.Hash `json:"stateRoot"` - TxHash *common.Hash `json:"transactionsRoot"` - ReceiptHash *common.Hash `json:"receiptsRoot"` - Bloom *Bloom `json:"logsBloom"` - Difficulty *hexutil.Big `json:"difficulty"` - Number *hexutil.Big `json:"number"` - GasLimit *hexutil.Big `json:"gasLimit"` - GasUsed *hexutil.Big `json:"gasUsed"` - Time *hexutil.Big `json:"timestamp"` - Extra *hexutil.Bytes `json:"extraData"` - MixDigest *common.Hash `json:"mixHash"` - Nonce *BlockNonce `json:"nonce"` +// field type overrides for gencodec +type headerMarshaling struct { + Difficulty *hexutil.Big + Number *hexutil.Big + GasLimit *hexutil.Big + GasUsed *hexutil.Big + Time *hexutil.Big + Extra hexutil.Bytes } // Hash returns the block hash of the header, which is simply the keccak256 hash of its @@ -134,65 +120,6 @@ func (h *Header) HashNoNonce() common.Hash { }) } -// MarshalJSON encodes headers into the web3 RPC response block format. -func (h *Header) MarshalJSON() ([]byte, error) { - return json.Marshal(&jsonHeader{ - ParentHash: &h.ParentHash, - UncleHash: &h.UncleHash, - Coinbase: &h.Coinbase, - Root: &h.Root, - TxHash: &h.TxHash, - ReceiptHash: &h.ReceiptHash, - Bloom: &h.Bloom, - Difficulty: (*hexutil.Big)(h.Difficulty), - Number: (*hexutil.Big)(h.Number), - GasLimit: (*hexutil.Big)(h.GasLimit), - GasUsed: (*hexutil.Big)(h.GasUsed), - Time: (*hexutil.Big)(h.Time), - Extra: (*hexutil.Bytes)(&h.Extra), - MixDigest: &h.MixDigest, - Nonce: &h.Nonce, - }) -} - -// UnmarshalJSON decodes headers from the web3 RPC response block format. -func (h *Header) UnmarshalJSON(input []byte) error { - var dec jsonHeader - if err := json.Unmarshal(input, &dec); err != nil { - return err - } - // Ensure that all fields are set. MixDigest is checked separately because - // it is a recent addition to the spec (as of August 2016) and older RPC server - // implementations might not provide it. - if dec.MixDigest == nil { - return errMissingHeaderMixDigest - } - if dec.ParentHash == nil || dec.UncleHash == nil || dec.Coinbase == nil || - dec.Root == nil || dec.TxHash == nil || dec.ReceiptHash == nil || - dec.Bloom == nil || dec.Difficulty == nil || dec.Number == nil || - dec.GasLimit == nil || dec.GasUsed == nil || dec.Time == nil || - dec.Extra == nil || dec.Nonce == nil { - return errMissingHeaderFields - } - // Assign all values. - h.ParentHash = *dec.ParentHash - h.UncleHash = *dec.UncleHash - h.Coinbase = *dec.Coinbase - h.Root = *dec.Root - h.TxHash = *dec.TxHash - h.ReceiptHash = *dec.ReceiptHash - h.Bloom = *dec.Bloom - h.Difficulty = (*big.Int)(dec.Difficulty) - h.Number = (*big.Int)(dec.Number) - h.GasLimit = (*big.Int)(dec.GasLimit) - h.GasUsed = (*big.Int)(dec.GasUsed) - h.Time = (*big.Int)(dec.Time) - h.Extra = *dec.Extra - h.MixDigest = *dec.MixDigest - h.Nonce = *dec.Nonce - return nil -} - func rlpHash(x interface{}) (h common.Hash) { hw := sha3.NewKeccak256() rlp.Encode(hw, x) diff --git a/core/types/gen_header_json.go b/core/types/gen_header_json.go new file mode 100644 index 0000000000..860622e6eb --- /dev/null +++ b/core/types/gen_header_json.go @@ -0,0 +1,136 @@ +// generated by github.com/fjl/gencodec, do not edit. + +package types + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func (h *Header) MarshalJSON() ([]byte, error) { + type HeaderJSON struct { + ParentHash *common.Hash `json:"parentHash"` + UncleHash *common.Hash `json:"sha3Uncles"` + Coinbase *common.Address `json:"miner"` + Root *common.Hash `json:"stateRoot"` + TxHash *common.Hash `json:"transactionsRoot"` + ReceiptHash *common.Hash `json:"receiptsRoot"` + Bloom *Bloom `json:"logsBloom"` + Difficulty *hexutil.Big `json:"difficulty"` + Number *hexutil.Big `json:"number"` + GasLimit *hexutil.Big `json:"gasLimit"` + GasUsed *hexutil.Big `json:"gasUsed"` + Time *hexutil.Big `json:"timestamp"` + Extra hexutil.Bytes `json:"extraData"` + MixDigest *common.Hash `json:"mixHash"` + Nonce *BlockNonce `json:"nonce"` + } + var enc HeaderJSON + enc.ParentHash = &h.ParentHash + enc.UncleHash = &h.UncleHash + enc.Coinbase = &h.Coinbase + enc.Root = &h.Root + enc.TxHash = &h.TxHash + enc.ReceiptHash = &h.ReceiptHash + enc.Bloom = &h.Bloom + enc.Difficulty = (*hexutil.Big)(h.Difficulty) + enc.Number = (*hexutil.Big)(h.Number) + enc.GasLimit = (*hexutil.Big)(h.GasLimit) + enc.GasUsed = (*hexutil.Big)(h.GasUsed) + enc.Time = (*hexutil.Big)(h.Time) + enc.Extra = h.Extra + enc.MixDigest = &h.MixDigest + enc.Nonce = &h.Nonce + return json.Marshal(&enc) +} + +func (h *Header) UnmarshalJSON(input []byte) error { + type HeaderJSON struct { + ParentHash *common.Hash `json:"parentHash"` + UncleHash *common.Hash `json:"sha3Uncles"` + Coinbase *common.Address `json:"miner"` + Root *common.Hash `json:"stateRoot"` + TxHash *common.Hash `json:"transactionsRoot"` + ReceiptHash *common.Hash `json:"receiptsRoot"` + Bloom *Bloom `json:"logsBloom"` + Difficulty *hexutil.Big `json:"difficulty"` + Number *hexutil.Big `json:"number"` + GasLimit *hexutil.Big `json:"gasLimit"` + GasUsed *hexutil.Big `json:"gasUsed"` + Time *hexutil.Big `json:"timestamp"` + Extra hexutil.Bytes `json:"extraData"` + MixDigest *common.Hash `json:"mixHash"` + Nonce *BlockNonce `json:"nonce"` + } + var dec HeaderJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + var x Header + if dec.ParentHash == nil { + return errors.New("missing required field 'parentHash' for Header") + } + x.ParentHash = *dec.ParentHash + if dec.UncleHash == nil { + return errors.New("missing required field 'sha3Uncles' for Header") + } + x.UncleHash = *dec.UncleHash + if dec.Coinbase == nil { + return errors.New("missing required field 'miner' for Header") + } + x.Coinbase = *dec.Coinbase + if dec.Root == nil { + return errors.New("missing required field 'stateRoot' for Header") + } + x.Root = *dec.Root + if dec.TxHash == nil { + return errors.New("missing required field 'transactionsRoot' for Header") + } + x.TxHash = *dec.TxHash + if dec.ReceiptHash == nil { + return errors.New("missing required field 'receiptsRoot' for Header") + } + x.ReceiptHash = *dec.ReceiptHash + if dec.Bloom == nil { + return errors.New("missing required field 'logsBloom' for Header") + } + x.Bloom = *dec.Bloom + if dec.Difficulty == nil { + return errors.New("missing required field 'difficulty' for Header") + } + x.Difficulty = (*big.Int)(dec.Difficulty) + if dec.Number == nil { + return errors.New("missing required field 'number' for Header") + } + x.Number = (*big.Int)(dec.Number) + if dec.GasLimit == nil { + return errors.New("missing required field 'gasLimit' for Header") + } + x.GasLimit = (*big.Int)(dec.GasLimit) + if dec.GasUsed == nil { + return errors.New("missing required field 'gasUsed' for Header") + } + x.GasUsed = (*big.Int)(dec.GasUsed) + if dec.Time == nil { + return errors.New("missing required field 'timestamp' for Header") + } + x.Time = (*big.Int)(dec.Time) + if dec.Extra == nil { + return errors.New("missing required field 'extraData' for Header") + } + x.Extra = dec.Extra + if dec.MixDigest == nil { + return errors.New("missing required field 'mixHash' for Header") + } + x.MixDigest = *dec.MixDigest + if dec.Nonce == nil { + return errors.New("missing required field 'nonce' for Header") + } + x.Nonce = *dec.Nonce + *h = x + return nil +} diff --git a/core/types/gen_log_json.go b/core/types/gen_log_json.go new file mode 100644 index 0000000000..ef2cdfd890 --- /dev/null +++ b/core/types/gen_log_json.go @@ -0,0 +1,90 @@ +// generated by github.com/fjl/gencodec, do not edit. + +package types + +import ( + "encoding/json" + "errors" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func (l *Log) MarshalJSON() ([]byte, error) { + type LogJSON struct { + Address *common.Address `json:"address"` + Topics []common.Hash `json:"topics"` + Data hexutil.Bytes `json:"data"` + BlockNumber *hexutil.Uint64 `json:"blockNumber" optional:"yes"` + TxHash *common.Hash `json:"transactionHash"` + TxIndex *hexutil.Uint `json:"transactionIndex"` + BlockHash *common.Hash `json:"blockHash" optional:"yes"` + Index *hexutil.Uint `json:"logIndex"` + Removed *bool `json:"removed" optional:"yes"` + } + var enc LogJSON + enc.Address = &l.Address + enc.Topics = l.Topics + enc.Data = l.Data + enc.BlockNumber = (*hexutil.Uint64)(&l.BlockNumber) + enc.TxHash = &l.TxHash + enc.TxIndex = (*hexutil.Uint)(&l.TxIndex) + enc.BlockHash = &l.BlockHash + enc.Index = (*hexutil.Uint)(&l.Index) + enc.Removed = &l.Removed + return json.Marshal(&enc) +} + +func (l *Log) UnmarshalJSON(input []byte) error { + type LogJSON struct { + Address *common.Address `json:"address"` + Topics []common.Hash `json:"topics"` + Data hexutil.Bytes `json:"data"` + BlockNumber *hexutil.Uint64 `json:"blockNumber" optional:"yes"` + TxHash *common.Hash `json:"transactionHash"` + TxIndex *hexutil.Uint `json:"transactionIndex"` + BlockHash *common.Hash `json:"blockHash" optional:"yes"` + Index *hexutil.Uint `json:"logIndex"` + Removed *bool `json:"removed" optional:"yes"` + } + var dec LogJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + var x Log + if dec.Address == nil { + return errors.New("missing required field 'address' for Log") + } + x.Address = *dec.Address + if dec.Topics == nil { + return errors.New("missing required field 'topics' for Log") + } + x.Topics = dec.Topics + if dec.Data == nil { + return errors.New("missing required field 'data' for Log") + } + x.Data = dec.Data + if dec.BlockNumber != nil { + x.BlockNumber = uint64(*dec.BlockNumber) + } + if dec.TxHash == nil { + return errors.New("missing required field 'transactionHash' for Log") + } + x.TxHash = *dec.TxHash + if dec.TxIndex == nil { + return errors.New("missing required field 'transactionIndex' for Log") + } + x.TxIndex = uint(*dec.TxIndex) + if dec.BlockHash != nil { + x.BlockHash = *dec.BlockHash + } + if dec.Index == nil { + return errors.New("missing required field 'logIndex' for Log") + } + x.Index = uint(*dec.Index) + if dec.Removed != nil { + x.Removed = *dec.Removed + } + *l = x + return nil +} diff --git a/core/types/gen_receipt_json.go b/core/types/gen_receipt_json.go new file mode 100644 index 0000000000..b9e9bee260 --- /dev/null +++ b/core/types/gen_receipt_json.go @@ -0,0 +1,79 @@ +// generated by github.com/fjl/gencodec, do not edit. + +package types + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func (r *Receipt) MarshalJSON() ([]byte, error) { + type ReceiptJSON struct { + PostState hexutil.Bytes `json:"root"` + CumulativeGasUsed *hexutil.Big `json:"cumulativeGasUsed"` + Bloom *Bloom `json:"logsBloom"` + Logs []*Log `json:"logs"` + TxHash *common.Hash `json:"transactionHash"` + ContractAddress *common.Address `json:"contractAddress" optional:"true"` + GasUsed *hexutil.Big `json:"gasUsed"` + } + var enc ReceiptJSON + enc.PostState = r.PostState + enc.CumulativeGasUsed = (*hexutil.Big)(r.CumulativeGasUsed) + enc.Bloom = &r.Bloom + enc.Logs = r.Logs + enc.TxHash = &r.TxHash + enc.ContractAddress = &r.ContractAddress + enc.GasUsed = (*hexutil.Big)(r.GasUsed) + return json.Marshal(&enc) +} + +func (r *Receipt) UnmarshalJSON(input []byte) error { + type ReceiptJSON struct { + PostState hexutil.Bytes `json:"root"` + CumulativeGasUsed *hexutil.Big `json:"cumulativeGasUsed"` + Bloom *Bloom `json:"logsBloom"` + Logs []*Log `json:"logs"` + TxHash *common.Hash `json:"transactionHash"` + ContractAddress *common.Address `json:"contractAddress" optional:"true"` + GasUsed *hexutil.Big `json:"gasUsed"` + } + var dec ReceiptJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + var x Receipt + if dec.PostState == nil { + return errors.New("missing required field 'root' for Receipt") + } + x.PostState = dec.PostState + if dec.CumulativeGasUsed == nil { + return errors.New("missing required field 'cumulativeGasUsed' for Receipt") + } + x.CumulativeGasUsed = (*big.Int)(dec.CumulativeGasUsed) + if dec.Bloom == nil { + return errors.New("missing required field 'logsBloom' for Receipt") + } + x.Bloom = *dec.Bloom + if dec.Logs == nil { + return errors.New("missing required field 'logs' for Receipt") + } + x.Logs = dec.Logs + if dec.TxHash == nil { + return errors.New("missing required field 'transactionHash' for Receipt") + } + x.TxHash = *dec.TxHash + if dec.ContractAddress != nil { + x.ContractAddress = *dec.ContractAddress + } + if dec.GasUsed == nil { + return errors.New("missing required field 'gasUsed' for Receipt") + } + x.GasUsed = (*big.Int)(dec.GasUsed) + *r = x + return nil +} diff --git a/core/types/gen_tx_json.go b/core/types/gen_tx_json.go new file mode 100644 index 0000000000..8bbe629d70 --- /dev/null +++ b/core/types/gen_tx_json.go @@ -0,0 +1,99 @@ +// generated by github.com/fjl/gencodec, do not edit. + +package types + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" +) + +func (t *txdata) MarshalJSON() ([]byte, error) { + type txdataJSON struct { + AccountNonce *hexutil.Uint64 `json:"nonce"` + Price *hexutil.Big `json:"gasPrice"` + GasLimit *hexutil.Big `json:"gasLimit"` + Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` + Amount *hexutil.Big `json:"value"` + Payload hexutil.Bytes `json:"input"` + V *hexutil.Big `json:"v"` + R *hexutil.Big `json:"r"` + S *hexutil.Big `json:"s"` + Hash *common.Hash `json:"hash" optional:"yes" rlp:"-"` + } + var enc txdataJSON + enc.AccountNonce = (*hexutil.Uint64)(&t.AccountNonce) + enc.Price = (*hexutil.Big)(t.Price) + enc.GasLimit = (*hexutil.Big)(t.GasLimit) + enc.Recipient = t.Recipient + enc.Amount = (*hexutil.Big)(t.Amount) + enc.Payload = t.Payload + enc.V = (*hexutil.Big)(t.V) + enc.R = (*hexutil.Big)(t.R) + enc.S = (*hexutil.Big)(t.S) + enc.Hash = t.Hash + return json.Marshal(&enc) +} + +func (t *txdata) UnmarshalJSON(input []byte) error { + type txdataJSON struct { + AccountNonce *hexutil.Uint64 `json:"nonce"` + Price *hexutil.Big `json:"gasPrice"` + GasLimit *hexutil.Big `json:"gasLimit"` + Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` + Amount *hexutil.Big `json:"value"` + Payload hexutil.Bytes `json:"input"` + V *hexutil.Big `json:"v"` + R *hexutil.Big `json:"r"` + S *hexutil.Big `json:"s"` + Hash *common.Hash `json:"hash" optional:"yes" rlp:"-"` + } + var dec txdataJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + var x txdata + if dec.AccountNonce == nil { + return errors.New("missing required field 'nonce' for txdata") + } + x.AccountNonce = uint64(*dec.AccountNonce) + if dec.Price == nil { + return errors.New("missing required field 'gasPrice' for txdata") + } + x.Price = (*big.Int)(dec.Price) + if dec.GasLimit == nil { + return errors.New("missing required field 'gasLimit' for txdata") + } + x.GasLimit = (*big.Int)(dec.GasLimit) + if dec.Recipient != nil { + x.Recipient = dec.Recipient + } + if dec.Amount == nil { + return errors.New("missing required field 'value' for txdata") + } + x.Amount = (*big.Int)(dec.Amount) + if dec.Payload == nil { + return errors.New("missing required field 'input' for txdata") + } + x.Payload = dec.Payload + if dec.V == nil { + return errors.New("missing required field 'v' for txdata") + } + x.V = (*big.Int)(dec.V) + if dec.R == nil { + return errors.New("missing required field 'r' for txdata") + } + x.R = (*big.Int)(dec.R) + if dec.S == nil { + return errors.New("missing required field 's' for txdata") + } + x.S = (*big.Int)(dec.S) + if dec.Hash != nil { + x.Hash = dec.Hash + } + *t = x + return nil +} diff --git a/core/types/log.go b/core/types/log.go index 7efb06b5c1..57fc7b3631 100644 --- a/core/types/log.go +++ b/core/types/log.go @@ -17,8 +17,6 @@ package types import ( - "encoding/json" - "errors" "fmt" "io" @@ -27,27 +25,42 @@ import ( "github.com/ethereum/go-ethereum/rlp" ) -var errMissingLogFields = errors.New("missing required JSON log fields") +//go:generate gencodec -type Log -field-override logMarshaling -out gen_log_json.go // Log represents a contract log event. These events are generated by the LOG opcode and // stored/indexed by the node. type Log struct { - // Consensus fields. - Address common.Address // address of the contract that generated the event - Topics []common.Hash // list of topics provided by the contract. - Data []byte // supplied by the contract, usually ABI-encoded + // Consensus fields: + // address of the contract that generated the event + Address common.Address `json:"address"` + // list of topics provided by the contract. + Topics []common.Hash `json:"topics"` + // supplied by the contract, usually ABI-encoded + Data []byte `json:"data"` // Derived fields. These fields are filled in by the node // but not secured by consensus. - BlockNumber uint64 // block in which the transaction was included - TxHash common.Hash // hash of the transaction - TxIndex uint // index of the transaction in the block - BlockHash common.Hash // hash of the block in which the transaction was included - Index uint // index of the log in the receipt + // block in which the transaction was included + BlockNumber uint64 `json:"blockNumber" optional:"yes"` + // hash of the transaction + TxHash common.Hash `json:"transactionHash"` + // index of the transaction in the block + TxIndex uint `json:"transactionIndex"` + // hash of the block in which the transaction was included + BlockHash common.Hash `json:"blockHash" optional:"yes"` + // index of the log in the receipt + Index uint `json:"logIndex"` // The Removed field is true if this log was reverted due to a chain reorganisation. // You must pay attention to this field if you receive logs through a filter query. - Removed bool + Removed bool `json:"removed" optional:"yes"` +} + +type logMarshaling struct { + Data hexutil.Bytes + BlockNumber hexutil.Uint64 + TxIndex hexutil.Uint + Index hexutil.Uint } type rlpLog struct { @@ -67,18 +80,6 @@ type rlpStorageLog struct { Index uint } -type jsonLog struct { - Address *common.Address `json:"address"` - Topics *[]common.Hash `json:"topics"` - Data *hexutil.Bytes `json:"data"` - BlockNumber *hexutil.Uint64 `json:"blockNumber"` - TxIndex *hexutil.Uint `json:"transactionIndex"` - TxHash *common.Hash `json:"transactionHash"` - BlockHash *common.Hash `json:"blockHash"` - Index *hexutil.Uint `json:"logIndex"` - Removed bool `json:"removed"` -} - // EncodeRLP implements rlp.Encoder. func (l *Log) EncodeRLP(w io.Writer) error { return rlp.Encode(w, rlpLog{Address: l.Address, Topics: l.Topics, Data: l.Data}) @@ -98,54 +99,6 @@ func (l *Log) String() string { return fmt.Sprintf(`log: %x %x %x %x %d %x %d`, l.Address, l.Topics, l.Data, l.TxHash, l.TxIndex, l.BlockHash, l.Index) } -// MarshalJSON implements json.Marshaler. -func (l *Log) MarshalJSON() ([]byte, error) { - jslog := &jsonLog{ - Address: &l.Address, - Topics: &l.Topics, - Data: (*hexutil.Bytes)(&l.Data), - TxIndex: (*hexutil.Uint)(&l.TxIndex), - TxHash: &l.TxHash, - Index: (*hexutil.Uint)(&l.Index), - Removed: l.Removed, - } - // Set block information for mined logs. - if (l.BlockHash != common.Hash{}) { - jslog.BlockHash = &l.BlockHash - jslog.BlockNumber = (*hexutil.Uint64)(&l.BlockNumber) - } - return json.Marshal(jslog) -} - -// UnmarshalJSON implements json.Umarshaler. -func (l *Log) UnmarshalJSON(input []byte) error { - var dec jsonLog - if err := json.Unmarshal(input, &dec); err != nil { - return err - } - if dec.Address == nil || dec.Topics == nil || dec.Data == nil || - dec.TxIndex == nil || dec.TxHash == nil || dec.Index == nil { - return errMissingLogFields - } - declog := Log{ - Address: *dec.Address, - Topics: *dec.Topics, - Data: *dec.Data, - TxHash: *dec.TxHash, - TxIndex: uint(*dec.TxIndex), - Index: uint(*dec.Index), - Removed: dec.Removed, - } - // Block information may be missing if the log is received through - // the pending log filter, so it's handled specially here. - if dec.BlockHash != nil && dec.BlockNumber != nil { - declog.BlockHash = *dec.BlockHash - declog.BlockNumber = uint64(*dec.BlockNumber) - } - *l = declog - return nil -} - // LogForStorage is a wrapper around a Log that flattens and parses the entire content of // a log including non-consensus fields. type LogForStorage Log diff --git a/core/types/log_test.go b/core/types/log_test.go index bf742ccac2..0e56acfe4a 100644 --- a/core/types/log_test.go +++ b/core/types/log_test.go @@ -18,6 +18,7 @@ package types import ( "encoding/json" + "fmt" "reflect" "testing" @@ -96,7 +97,7 @@ var unmarshalLogTests = map[string]struct { }, "missing data": { input: `{"address":"0xecf8f87f810ecf450940c9f60066b4a7a501d6a7","blockHash":"0x656c34545f90a730a19008c0e7a7cd4fb3895064b48d6d69761bd5abad681056","blockNumber":"0x1ecfa4","logIndex":"0x2","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x00000000000000000000000080b2c9d7cbbf30a1b0fc8983c647d754c6525615","0x000000000000000000000000f9dff387dcb5cc4cca5b91adb07a95f54e9f1bb6"],"transactionHash":"0x3b198bfd5d2907285af009e9ae84a0ecd63677110d89d7e030251acb87f6487e","transactionIndex":"0x3"}`, - wantError: errMissingLogFields, + wantError: fmt.Errorf("missing required field 'data' for Log"), }, } diff --git a/core/types/receipt.go b/core/types/receipt.go index 0a6a35e334..5bfcb15fc7 100644 --- a/core/types/receipt.go +++ b/core/types/receipt.go @@ -17,8 +17,6 @@ package types import ( - "encoding/json" - "errors" "fmt" "io" "math/big" @@ -28,33 +26,26 @@ import ( "github.com/ethereum/go-ethereum/rlp" ) -var ( - errMissingReceiptPostState = errors.New("missing post state root in JSON receipt") - errMissingReceiptFields = errors.New("missing required JSON receipt fields") -) +//go:generate gencodec -type Receipt -field-override receiptMarshaling -out gen_receipt_json.go // Receipt represents the results of a transaction. type Receipt struct { // Consensus fields - PostState []byte - CumulativeGasUsed *big.Int - Bloom Bloom - Logs []*Log + PostState []byte `json:"root"` + CumulativeGasUsed *big.Int `json:"cumulativeGasUsed"` + Bloom Bloom `json:"logsBloom"` + Logs []*Log `json:"logs"` // Implementation fields (don't reorder!) - TxHash common.Hash - ContractAddress common.Address - GasUsed *big.Int + TxHash common.Hash `json:"transactionHash"` + ContractAddress common.Address `json:"contractAddress" optional:"true"` + GasUsed *big.Int `json:"gasUsed"` } -type jsonReceipt struct { - PostState *common.Hash `json:"root"` - CumulativeGasUsed *hexutil.Big `json:"cumulativeGasUsed"` - Bloom *Bloom `json:"logsBloom"` - Logs []*Log `json:"logs"` - TxHash *common.Hash `json:"transactionHash"` - ContractAddress *common.Address `json:"contractAddress"` - GasUsed *hexutil.Big `json:"gasUsed"` +type receiptMarshaling struct { + PostState hexutil.Bytes + CumulativeGasUsed *hexutil.Big + GasUsed *hexutil.Big } // NewReceipt creates a barebone transaction receipt, copying the init fields. @@ -84,51 +75,6 @@ func (r *Receipt) DecodeRLP(s *rlp.Stream) error { return nil } -// MarshalJSON encodes receipts into the web3 RPC response block format. -func (r *Receipt) MarshalJSON() ([]byte, error) { - root := common.BytesToHash(r.PostState) - - return json.Marshal(&jsonReceipt{ - PostState: &root, - CumulativeGasUsed: (*hexutil.Big)(r.CumulativeGasUsed), - Bloom: &r.Bloom, - Logs: r.Logs, - TxHash: &r.TxHash, - ContractAddress: &r.ContractAddress, - GasUsed: (*hexutil.Big)(r.GasUsed), - }) -} - -// UnmarshalJSON decodes the web3 RPC receipt format. -func (r *Receipt) UnmarshalJSON(input []byte) error { - var dec jsonReceipt - if err := json.Unmarshal(input, &dec); err != nil { - return err - } - // Ensure that all fields are set. PostState is checked separately because it is a - // recent addition to the RPC spec (as of August 2016) and older implementations might - // not provide it. Note that ContractAddress is not checked because it can be null. - if dec.PostState == nil { - return errMissingReceiptPostState - } - if dec.CumulativeGasUsed == nil || dec.Bloom == nil || - dec.Logs == nil || dec.TxHash == nil || dec.GasUsed == nil { - return errMissingReceiptFields - } - *r = Receipt{ - PostState: (*dec.PostState)[:], - CumulativeGasUsed: (*big.Int)(dec.CumulativeGasUsed), - Bloom: *dec.Bloom, - Logs: dec.Logs, - TxHash: *dec.TxHash, - GasUsed: (*big.Int)(dec.GasUsed), - } - if dec.ContractAddress != nil { - r.ContractAddress = *dec.ContractAddress - } - return nil -} - // String implements the Stringer interface. func (r *Receipt) String() string { return fmt.Sprintf("receipt{med=%x cgas=%v bloom=%x logs=%v}", r.PostState, r.CumulativeGasUsed, r.Bloom, r.Logs) diff --git a/core/types/transaction.go b/core/types/transaction.go index ab0bba4dcd..a02f9ed009 100644 --- a/core/types/transaction.go +++ b/core/types/transaction.go @@ -18,7 +18,6 @@ package types import ( "container/heap" - "encoding/json" "errors" "fmt" "io" @@ -32,12 +31,11 @@ import ( "github.com/ethereum/go-ethereum/rlp" ) -var ErrInvalidSig = errors.New("invalid transaction v, r, s values") +//go:generate gencodec -type txdata -field-override txdataMarshaling -out gen_tx_json.go var ( - errMissingTxSignatureFields = errors.New("missing required JSON transaction signature fields") - errMissingTxFields = errors.New("missing required JSON transaction fields") - errNoSigner = errors.New("missing signing methods") + ErrInvalidSig = errors.New("invalid transaction v, r, s values") + errNoSigner = errors.New("missing signing methods") ) // deriveSigner makes a *best* guess about which signer to use. @@ -58,26 +56,31 @@ type Transaction struct { } type txdata struct { - AccountNonce uint64 - Price, GasLimit *big.Int - Recipient *common.Address `rlp:"nil"` // nil means contract creation - Amount *big.Int - Payload []byte - V *big.Int // signature - R, S *big.Int // signature + AccountNonce uint64 `json:"nonce"` + Price *big.Int `json:"gasPrice"` + GasLimit *big.Int `json:"gasLimit"` + Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` // nil means contract creation + Amount *big.Int `json:"value"` + Payload []byte `json:"input"` + + // Signature values + V *big.Int `json:"v"` + R *big.Int `json:"r"` + S *big.Int `json:"s"` + + // This is only used when marshaling to JSON. + Hash *common.Hash `json:"hash" optional:"yes" rlp:"-"` } -type jsonTransaction struct { - Hash *common.Hash `json:"hash"` - AccountNonce *hexutil.Uint64 `json:"nonce"` - Price *hexutil.Big `json:"gasPrice"` - GasLimit *hexutil.Big `json:"gas"` - Recipient *common.Address `json:"to"` - Amount *hexutil.Big `json:"value"` - Payload *hexutil.Bytes `json:"input"` - V *hexutil.Big `json:"v"` - R *hexutil.Big `json:"r"` - S *hexutil.Big `json:"s"` +type txdataMarshaling struct { + AccountNonce hexutil.Uint64 + Price *hexutil.Big + GasLimit *hexutil.Big + Amount *hexutil.Big + Payload hexutil.Bytes + V *hexutil.Big + R *hexutil.Big + S *hexutil.Big } func NewTransaction(nonce uint64, to common.Address, amount, gasLimit, gasPrice *big.Int, data []byte) *Transaction { @@ -164,66 +167,30 @@ func (tx *Transaction) DecodeRLP(s *rlp.Stream) error { return err } -// MarshalJSON encodes transactions into the web3 RPC response block format. func (tx *Transaction) MarshalJSON() ([]byte, error) { hash := tx.Hash() - - return json.Marshal(&jsonTransaction{ - Hash: &hash, - AccountNonce: (*hexutil.Uint64)(&tx.data.AccountNonce), - Price: (*hexutil.Big)(tx.data.Price), - GasLimit: (*hexutil.Big)(tx.data.GasLimit), - Recipient: tx.data.Recipient, - Amount: (*hexutil.Big)(tx.data.Amount), - Payload: (*hexutil.Bytes)(&tx.data.Payload), - V: (*hexutil.Big)(tx.data.V), - R: (*hexutil.Big)(tx.data.R), - S: (*hexutil.Big)(tx.data.S), - }) + data := tx.data + data.Hash = &hash + return data.MarshalJSON() } // UnmarshalJSON decodes the web3 RPC transaction format. func (tx *Transaction) UnmarshalJSON(input []byte) error { - var dec jsonTransaction - if err := json.Unmarshal(input, &dec); err != nil { + var dec txdata + if err := dec.UnmarshalJSON(input); err != nil { return err } - // Ensure that all fields are set. V, R, S are checked separately because they're a - // recent addition to the RPC spec (as of August 2016) and older implementations might - // not provide them. Note that Recipient is not checked because it can be missing for - // contract creations. - if dec.V == nil || dec.R == nil || dec.S == nil { - return errMissingTxSignatureFields - } - var V byte - if isProtectedV((*big.Int)(dec.V)) { - chainId := deriveChainId((*big.Int)(dec.V)).Uint64() - V = byte(dec.V.ToInt().Uint64() - 35 - 2*chainId) + if isProtectedV(dec.V) { + chainId := deriveChainId(dec.V).Uint64() + V = byte(dec.V.Uint64() - 35 - 2*chainId) } else { - V = byte(((*big.Int)(dec.V)).Uint64() - 27) + V = byte(dec.V.Uint64() - 27) } - if !crypto.ValidateSignatureValues(V, (*big.Int)(dec.R), (*big.Int)(dec.S), false) { + if !crypto.ValidateSignatureValues(V, dec.R, dec.S, false) { return ErrInvalidSig } - - if dec.AccountNonce == nil || dec.Price == nil || dec.GasLimit == nil || dec.Amount == nil || dec.Payload == nil { - return errMissingTxFields - } - // Assign the fields. This is not atomic but reusing transactions - // for decoding isn't thread safe anyway. - *tx = Transaction{} - tx.data = txdata{ - AccountNonce: uint64(*dec.AccountNonce), - Recipient: dec.Recipient, - Amount: (*big.Int)(dec.Amount), - GasLimit: (*big.Int)(dec.GasLimit), - Price: (*big.Int)(dec.Price), - Payload: *dec.Payload, - V: (*big.Int)(dec.V), - R: (*big.Int)(dec.R), - S: (*big.Int)(dec.S), - } + *tx = Transaction{data: dec} return nil } From 544247c91828b5f99d7d2bd61b98cc51e2b23e44 Mon Sep 17 00:00:00 2001 From: Martin Holst Swende Date: Wed, 8 Mar 2017 12:26:19 +0100 Subject: [PATCH 07/57] * cmd/geth: add --nocompaction flag + multiple import files * main,import: Add --nocompaction flag + multiple import files * geth/import: documentation * import: Added more info to err message * fix :P --- cmd/geth/chaincmd.go | 27 ++++++++++++++++++++++----- cmd/geth/main.go | 1 + cmd/utils/flags.go | 5 ++++- 3 files changed, 27 insertions(+), 6 deletions(-) diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go index 784692261f..6ea474a9ce 100644 --- a/cmd/geth/chaincmd.go +++ b/cmd/geth/chaincmd.go @@ -54,10 +54,13 @@ participating. Action: importChain, Name: "import", Usage: "Import a blockchain file", - ArgsUsage: "", + ArgsUsage: " ( ... ) ", Category: "BLOCKCHAIN COMMANDS", Description: ` -TODO: Please write this +The import command imports blocks from an RLP-encoded form. The form can be one file +with several RLP-encoded blocks, or several files can be used. +If only one file is used, import error will result in failure. If several files are used, +processing will proceed even if an individual RLP-file import failure occurs. `, } exportCommand = cli.Command{ @@ -122,7 +125,7 @@ func initGenesis(ctx *cli.Context) error { } func importChain(ctx *cli.Context) error { - if len(ctx.Args()) != 1 { + if len(ctx.Args()) < 1 { utils.Fatalf("This command requires an argument.") } stack := makeFullNode(ctx) @@ -146,9 +149,19 @@ func importChain(ctx *cli.Context) error { }() // Import the chain start := time.Now() - if err := utils.ImportChain(chain, ctx.Args().First()); err != nil { - utils.Fatalf("Import error: %v", err) + + if len(ctx.Args()) == 1 { + if err := utils.ImportChain(chain, ctx.Args().First()); err != nil { + utils.Fatalf("Import error: %v", err) + } + } else { + for _, arg := range ctx.Args() { + if err := utils.ImportChain(chain, arg); err != nil { + log.Error("Import error", "file", arg, "err", err) + } + } } + fmt.Printf("Import done in %v.\n\n", time.Since(start)) // Output pre-compaction stats mostly to see the import trashing @@ -171,6 +184,10 @@ func importChain(ctx *cli.Context) error { fmt.Printf("Allocations: %.3f million\n", float64(mem.Mallocs)/1000000) fmt.Printf("GC pause: %v\n\n", time.Duration(mem.PauseTotalNs)) + if ctx.GlobalIsSet(utils.NoCompactionFlag.Name) { + return nil + } + // Compact the entire database to more accurately measure disk io and print the stats start = time.Now() fmt.Println("Compacting entire database...") diff --git a/cmd/geth/main.go b/cmd/geth/main.go index 79893cc04d..1f6f2bb295 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -140,6 +140,7 @@ func init() { utils.EthStatsURLFlag, utils.MetricsEnabledFlag, utils.FakePoWFlag, + utils.NoCompactionFlag, utils.SolcPathFlag, utils.GpoMinGasPriceFlag, utils.GpoMaxGasPriceFlag, diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index adc18a2030..04db9a16f3 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -244,7 +244,10 @@ var ( Name: "fakepow", Usage: "Disables proof-of-work verification", } - + NoCompactionFlag = cli.BoolFlag{ + Name: "nocompaction", + Usage: "Disables db compaction after import", + } // RPC settings RPCEnabledFlag = cli.BoolFlag{ Name: "rpc", From 288700c4d884321b7de7119b596c6e052fa33b27 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Thu, 9 Mar 2017 12:02:43 +0200 Subject: [PATCH 08/57] build: add bootnode to Ubuntu PPAs too (#3766) --- build/ci.go | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/build/ci.go b/build/ci.go index 4ff63fd7fe..914ce9eaec 100644 --- a/build/ci.go +++ b/build/ci.go @@ -83,6 +83,10 @@ var ( Name: "geth", Description: "Ethereum CLI client.", }, + { + Name: "bootnode", + Description: "Ethereum bootnode.", + }, { Name: "rlpdump", Description: "Developer utility tool that prints RLP structures.", From 3b00a77de57ab2737a7887521c192ce004c721e3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Sun, 5 Mar 2017 17:38:34 +0200 Subject: [PATCH 09/57] crypto, pow: add pure Go implementation of ethash --- crypto/crypto.go | 48 ++ crypto/sha3/hashes.go | 3 + crypto/sha3/keccakf_amd64.s | 2 - pow/ethash.go | 1071 +++++++++++++++++++++++++++++++++++ pow/ethash_test.go | 722 +++++++++++++++++++++++ pow/xor.go | 85 +++ 6 files changed, 1929 insertions(+), 2 deletions(-) create mode 100644 pow/ethash.go create mode 100644 pow/ethash_test.go create mode 100644 pow/xor.go diff --git a/crypto/crypto.go b/crypto/crypto.go index ecc3be3ce5..a60a4617ee 100644 --- a/crypto/crypto.go +++ b/crypto/crypto.go @@ -37,6 +37,11 @@ var ( secp256k1_halfN = new(big.Int).Div(secp256k1_N, big.NewInt(2)) ) +// Hasher is a repetitive hasher allowing the same hash data structures to be +// reused between hash runs instead of requiring new ones to be created. +type Hasher func(data []byte) []byte + +// Keccak256 calculates and returns the Keccak256 hash of the input data. func Keccak256(data ...[]byte) []byte { d := sha3.NewKeccak256() for _, b := range data { @@ -45,6 +50,8 @@ func Keccak256(data ...[]byte) []byte { return d.Sum(nil) } +// Keccak256Hash calculates and returns the Keccak256 hash of the input data, +// converting it to an internal Hash data structure. func Keccak256Hash(data ...[]byte) (h common.Hash) { d := sha3.NewKeccak256() for _, b := range data { @@ -54,6 +61,47 @@ func Keccak256Hash(data ...[]byte) (h common.Hash) { return h } +// Keccak256Hasher creates a repetitive Keccak256 hasher, allowing the same hash +// data structures to be reused between hash runs instead of requiring new ones +// to be created. +// +// The returned function is not thread safe! +func Keccak256Hasher() Hasher { + hasher := sha3.NewKeccak256() + + return func(data []byte) []byte { + hasher.Write(data) + result := hasher.Sum(nil) + hasher.Reset() + return result + } +} + +// Keccak512 calculates and returns the Keccak512 hash of the input data. +func Keccak512(data ...[]byte) []byte { + d := sha3.NewKeccak512() + for _, b := range data { + d.Write(b) + } + return d.Sum(nil) +} + +// Keccak512Hasher creates a repetitive Keccak512 hasher, allowing the same hash +// data structures to be reused between hash runs instead of requiring new ones +// to be created. +// +// The returned function is not thread safe! +func Keccak512Hasher() Hasher { + hasher := sha3.NewKeccak512() + + return func(data []byte) []byte { + hasher.Write(data) + result := hasher.Sum(nil) + hasher.Reset() + return result + } +} + // Deprecated: For backward compatibility as other packages depend on these func Sha3Hash(data ...[]byte) common.Hash { return Keccak256Hash(data...) } diff --git a/crypto/sha3/hashes.go b/crypto/sha3/hashes.go index 669cd5543c..fa0d7b4362 100644 --- a/crypto/sha3/hashes.go +++ b/crypto/sha3/hashes.go @@ -15,6 +15,9 @@ import ( // NewKeccak256 creates a new Keccak-256 hash. func NewKeccak256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x01} } +// NewKeccak512 creates a new Keccak-512 hash. +func NewKeccak512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x01} } + // New224 creates a new SHA3-224 hash. // Its generic security strength is 224 bits against preimage attacks, // and 112 bits against collision attacks. diff --git a/crypto/sha3/keccakf_amd64.s b/crypto/sha3/keccakf_amd64.s index a35335178e..f88533accd 100644 --- a/crypto/sha3/keccakf_amd64.s +++ b/crypto/sha3/keccakf_amd64.s @@ -322,7 +322,6 @@ // func keccakF1600(state *[25]uint64) TEXT ·keccakF1600(SB), 0, $200-8 MOVQ state+0(FP), rpState - SUBQ $(8*25), SP // Convert the user state into an internal state NOTQ _be(rpState) @@ -388,5 +387,4 @@ TEXT ·keccakF1600(SB), 0, $200-8 NOTQ _mi(rpState) NOTQ _sa(rpState) - ADDQ $(8*25), SP RET diff --git a/pow/ethash.go b/pow/ethash.go new file mode 100644 index 0000000000..91c758d94e --- /dev/null +++ b/pow/ethash.go @@ -0,0 +1,1071 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package pow + +import ( + "encoding/binary" + "io" + "math/big" + "runtime" + "sync" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" +) + +const ( + datasetInitBytes = 1 << 30 // Bytes in dataset at genesis + datasetGrowthBytes = 1 << 23 // Dataset growth per epoch + cacheInitBytes = 1 << 24 // Bytes in cache at genesis + cacheGrowthBytes = 1 << 17 // Cache growth per epoch + epochLength = 30000 // Blocks per epoch + mixBytes = 128 // Width of mix + hashBytes = 64 // Hash length in bytes + hashWords = 16 // Number of 32 bit ints in a hash + datasetParents = 256 // Number of parents of each dataset element + cacheRounds = 3 // Number of rounds in cache production + loopAccesses = 64 // Number of accesses in hashimoto loop +) + +var ( + // Metadata fields to be compatible with the C++ ethash + ethashRevision = 23 // Data structure version + ethashMagic = hexutil.MustDecode("0xfee1deadbaddcafe") // Dataset dump magic number +) + +// cacheSize calculates and returns the size of the ethash verification cache that +// belongs to a certain block number. The cache size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func cacheSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(cacheSizes) { + return cacheSizes[epoch] + } + // No known cache size, calculate manually (sanity branch only) + size := uint64(cacheInitBytes + cacheGrowthBytes*epoch - hashBytes) + for !new(big.Int).SetUint64(size / hashBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 + size -= 2 * hashBytes + } + return size +} + +// datasetSize calculates and returns the size of the ethash mining dataset that +// belongs to a certain block number. The dataset size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func datasetSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(datasetSizes) { + return datasetSizes[epoch] + } + // No known dataset size, calculate manually (sanity branch only) + size := uint64(datasetInitBytes + datasetGrowthBytes*epoch - mixBytes) + for !new(big.Int).SetUint64(size / mixBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 + size -= 2 * mixBytes + } + return size +} + +// seedHash is the seed to use for generating a vrification cache and the mining +// dataset. +func seedHash(block uint64) []byte { + seed := make([]byte, 32) + if block < epochLength { + return seed + } + keccak256 := crypto.Keccak256Hasher() + for i := 0; i < int(block/epochLength); i++ { + seed = keccak256(seed) + } + return seed +} + +// generateCache creates a verification cache of a given size for an input seed. +// The cache production process involves first sequentially filling up 32 MB of +// memory, then performing two passes of Sergio Demian Lerner's RandMemoHash +// algorithm from Strict Memory Hard Hashing Functions (2014). The output is a +// set of 524288 64-byte values. +func generateCache(size uint64, seed []byte) []byte { + // Print some debug logs to allow analysis on low end devices + logger := log.New("size", size, "seed", hexutil.Bytes(seed)) + logger.Debug("Generating ethash cache") + + defer func(start time.Time) { + logger.Debug("Generated ethash cache", "elapsed", common.PrettyDuration(time.Since(start))) + }(time.Now()) + + // Calculate the number of thoretical rows (we'll store in one buffer nonetheless) + rows := int(size) / hashBytes + + // Create a hasher to reuse between invocations + keccak512 := crypto.Keccak512Hasher() + + // Sequentially produce the initial dataset + cache := make([]byte, size) + copy(cache, keccak512(seed)) + for offset := uint64(hashBytes); offset < size; offset += hashBytes { + copy(cache[offset:], keccak512(cache[offset-hashBytes:offset])) + } + // Use a low-round version of randmemohash + temp := make([]byte, hashBytes) + + for i := 0; i < cacheRounds; i++ { + for j := 0; j < rows; j++ { + var ( + srcOff = ((j - 1 + rows) % rows) * hashBytes + dstOff = j * hashBytes + xorOff = (binary.LittleEndian.Uint32(cache[dstOff:]) % uint32(rows)) * hashBytes + ) + xorBytes(temp, cache[srcOff:srcOff+hashBytes], cache[xorOff:xorOff+hashBytes]) + copy(cache[dstOff:], keccak512(temp)) + } + } + return cache +} + +// prepare convers an ethash cache or dataset from a byte stream into the internal +// int representation. All ethash methods work with ints to avoid constant byte to +// int conversions as well as to handle both little and big endian systems. +func prepare(size uint64, r io.Reader) []uint32 { + ints := make([]uint32, size/4) + + buffer := make([]byte, 4) + for i := 0; i < len(ints); i++ { + io.ReadFull(r, buffer) + ints[i] = binary.LittleEndian.Uint32(buffer) + } + return ints +} + +// fnv is an algorithm inspired by the FNV hash, which in some cases is used as +// a non-associative substitute for XOR. Note that we multiply the prime with +// the full 32-bit input, in contrast with the FNV-1 spec which multiplies the +// prime with one byte (octet) in turn. +func fnv(a, b uint32) uint32 { + return a*0x01000193 ^ b +} + +// fnvHash mixes in data into mix using the ethash fnv method. +func fnvHash(mix []uint32, data []uint32) { + for i := 0; i < len(mix); i++ { + mix[i] = mix[i]*0x01000193 ^ data[i] + } +} + +// generateDatasetItem combines data from 256 pseudorandomly selected cache nodes, +// and hashes that to compute a single dataset node. +func generateDatasetItem(cache []uint32, index uint32, keccak512 crypto.Hasher) []byte { + // Calculate the number of thoretical rows (we use one buffer nonetheless) + rows := uint32(len(cache) / hashWords) + + // Initialize the mix + mix := make([]byte, hashBytes) + + binary.LittleEndian.PutUint32(mix, cache[(index%rows)*hashWords]^index) + for i := 1; i < hashWords; i++ { + binary.LittleEndian.PutUint32(mix[i*4:], cache[(index%rows)*hashWords+uint32(i)]) + } + mix = keccak512(mix) + + // Convert the mix to uint32s to avoid constant bit shifting + intMix := make([]uint32, hashWords) + for i := 0; i < len(intMix); i++ { + intMix[i] = binary.LittleEndian.Uint32(mix[i*4:]) + } + // fnv it with a lot of random cache nodes based on index + for i := uint32(0); i < datasetParents; i++ { + parent := fnv(index^i, intMix[i%16]) % rows + fnvHash(intMix, cache[parent*hashWords:]) + } + // Flatten the uint32 mix into a binary one and return + for i, val := range intMix { + binary.LittleEndian.PutUint32(mix[i*4:], val) + } + return keccak512(mix) +} + +// generateDataset generates the entire ethash dataset for mining. +func generateDataset(size uint64, cache []uint32) []byte { + // Print some debug logs to allow analysis on low end devices + logger := log.New("size", size) + logger.Debug("Generating ethash dataset") + + defer func(start time.Time) { + logger.Debug("Generated ethash dataset", "elapsed", common.PrettyDuration(time.Since(start))) + }(time.Now()) + + // Generate the dataset on many goroutines since it takes a while + dataset := make([]byte, size) + threads := runtime.NumCPU() + + var pend sync.WaitGroup + pend.Add(threads) + + var progress uint32 + for i := 0; i < threads; i++ { + go func(id int) { + defer pend.Done() + + // Create a hasher to reuse between invocations + keccak512 := crypto.Keccak512Hasher() + + // Calculate the data segment this thread should generate + batch := uint32(size / hashBytes / uint64(threads)) + start := uint32(id) * batch + limit := start + batch + if limit > uint32(size/hashBytes) { + limit = uint32(size / hashBytes) + } + // Calculate the dataset segment + percent := uint32(size / hashBytes / 100) + for index := start; index < limit; index++ { + copy(dataset[index*hashBytes:], generateDatasetItem(cache, index, keccak512)) + + if status := atomic.AddUint32(&progress, 1); status%percent == 0 { + logger.Info("Generating DAG in progress", "percentage", uint64(status*100)/(size/hashBytes)) + } + } + }(i) + } + // Wait for all the generators to finish and return + pend.Wait() + + return dataset +} + +// hashimoto aggregates data from the full dataset in order to produce our final +// value for a particular header hash and nonce. +func hashimoto(hash []byte, nonce uint64, size uint64, lookup func(index uint32) []uint32) ([]byte, []byte) { + // Calculate the number of thoretical rows (we use one buffer nonetheless) + rows := uint32(size / mixBytes) + + // Combine header+nonce into a 64 byte seed + seed := make([]byte, 40) + copy(seed, hash) + binary.LittleEndian.PutUint64(seed[32:], nonce) + + seed = crypto.Keccak512(seed) + seedHead := binary.LittleEndian.Uint32(seed) + + // Start the mix with replicated seed + mix := make([]uint32, mixBytes/4) + for i := 0; i < len(mix); i++ { + mix[i] = binary.LittleEndian.Uint32(seed[i%16*4:]) + } + // Mix in random dataset nodes + temp := make([]uint32, len(mix)) + + for i := 0; i < loopAccesses; i++ { + parent := fnv(uint32(i)^seedHead, mix[i%len(mix)]) % rows + for j := uint32(0); j < mixBytes/hashBytes; j++ { + copy(temp[j*hashWords:], lookup(2*parent+j)) + } + fnvHash(mix, temp) + } + // Compress mix + for i := 0; i < len(mix); i += 4 { + mix[i/4] = fnv(fnv(fnv(mix[i], mix[i+1]), mix[i+2]), mix[i+3]) + } + mix = mix[:len(mix)/4] + + digest := make([]byte, common.HashLength) + for i, val := range mix { + binary.LittleEndian.PutUint32(digest[i*4:], val) + } + return digest, crypto.Keccak256(append(seed, digest...)) +} + +// hashimotoLight aggregates data from the full dataset (using only a small +// in-memory cache) in order to produce our final value for a particular header +// hash and nonce. +func hashimotoLight(size uint64, cache []uint32, hash []byte, nonce uint64) ([]byte, []byte) { + keccak512 := crypto.Keccak512Hasher() + + lookup := func(index uint32) []uint32 { + rawData := generateDatasetItem(cache, index, keccak512) + + data := make([]uint32, len(rawData)/4) + for i := 0; i < len(data); i++ { + data[i] = binary.LittleEndian.Uint32(rawData[i*4:]) + } + return data + } + return hashimoto(hash, nonce, size, lookup) +} + +// hashimotoFull aggregates data from the full dataset (using the full in-memory +// dataset) in order to produce our final value for a particular header hash and +// nonce. +func hashimotoFull(size uint64, dataset []uint32, hash []byte, nonce uint64) ([]byte, []byte) { + lookup := func(index uint32) []uint32 { + offset := index * hashWords + return dataset[offset : offset+hashWords] + } + return hashimoto(hash, nonce, size, lookup) +} + +// datasetSizes is a lookup table for the ethash dataset size for the first 2048 +// epochs (i.e. 61440000 blocks). +var datasetSizes = []uint64{ + 1073739904, 1082130304, 1090514816, 1098906752, 1107293056, + 1115684224, 1124070016, 1132461952, 1140849536, 1149232768, + 1157627776, 1166013824, 1174404736, 1182786944, 1191180416, + 1199568512, 1207958912, 1216345216, 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272236352, + 272367296, 272498368, 272629568, 272759488, 272891456, 273022784, + 273153856, 273284672, 273415616, 273547072, 273677632, 273808448, + 273937088, 274071488, 274200896, 274332992, 274463296, 274595392, + 274726208, 274857536, 274988992, 275118656, 275250496, 275382208, + 275513024, 275643968, 275775296, 275906368, 276037184, 276167872, + 276297664, 276429376, 276560576, 276692672, 276822976, 276955072, + 277085632, 277216832, 277347008, 277478848, 277609664, 277740992, + 277868608, 278002624, 278134336, 278265536, 278395328, 278526784, + 278657728, 278789824, 278921152, 279052096, 279182912, 279313088, + 279443776, 279576256, 279706048, 279838528, 279969728, 280099648, + 280230976, 280361408, 280493632, 280622528, 280755392, 280887104, + 281018176, 281147968, 281278912, 281411392, 281542592, 281673152, + 281803712, 281935552, 282066496, 282197312, 282329024, 282458816, + 282590272, 282720832, 282853184, 282983744, 283115072, 283246144, + 283377344, 283508416, 283639744, 283770304, 283901504, 284032576, + 284163136, 284294848, 284426176, 284556992, 284687296, 284819264, + 284950208, 285081536} diff --git a/pow/ethash_test.go b/pow/ethash_test.go new file mode 100644 index 0000000000..43d899e219 --- /dev/null +++ b/pow/ethash_test.go @@ -0,0 +1,722 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package pow + +import ( + "bytes" + "testing" + + "github.com/ethereum/go-ethereum/common/hexutil" +) + +// Tests whether the dataset size calculator work correctly by cross checking the +// hard coded lookup table with the value generated by it. +func TestSizeCalculations(t *testing.T) { + var tests []uint64 + + // Verify all the cache sizes from the lookup table + defer func(sizes []uint64) { cacheSizes = sizes }(cacheSizes) + tests, cacheSizes = cacheSizes, []uint64{} + + for i, test := range tests { + if size := cacheSize(uint64(i*epochLength) + 1); size != test { + t.Errorf("cache %d: cache size mismatch: have %d, want %d", i, size, test) + } + } + // Verify all the dataset sizes from the lookup table + defer func(sizes []uint64) { datasetSizes = sizes }(datasetSizes) + tests, datasetSizes = datasetSizes, []uint64{} + + for i, test := range tests { + if size := datasetSize(uint64(i*epochLength) + 1); size != test { + t.Errorf("dataset %d: dataset size mismatch: have %d, want %d", i, size, test) + } + } +} + +// Tests that verification caches can be correctly generated. +func TestCacheGeneration(t *testing.T) { + tests := []struct { + size uint64 + seed []byte + cache []byte + }{ + { + size: 1024, + seed: make([]byte, 32), + cache: hexutil.MustDecode("0x" + + "7ce2991c951f7bf4c4c1bb119887ee07871eb5339d7b97b8588e85c742de90e5bafd5bbe6ce93a134fb6be9ad3e30db99d9528a2ea7846833f52e9ca119b6b54" + + "8979480c46e19972bd0738779c932c1b43e665a2fd3122fc3ddb2691f353ceb0ed3e38b8f51fd55b6940290743563c9f8fa8822e611924657501a12aafab8a8d" + + "88fb5fbae3a99d14792406672e783a06940a42799b1c38bc28715db6d37cb11f9f6b24e386dc52dd8c286bd8c36fa813dffe4448a9f56ebcbeea866b42f68d22" + + "6c32aae4d695a23cab28fd74af53b0c2efcc180ceaaccc0b2e280103d097a03c1d1b0f0f26ce5f32a90238f9bc49f645db001ef9cd3d13d44743f841fad11a37" + + "fa290c62c16042f703578921f30b9951465aae2af4a5dad43a7341d7b4a62750954965a47a1c3af638dc3495c4d62a9bab843168c9fc0114e79cffd1b2827b01" + + "75d30ba054658f214e946cf24c43b40d3383fbb0493408e5c5392434ca21bbcf43200dfb876c713d201813934fa485f48767c5915745cf0986b1dc0f33e57748" + + "bf483ee2aff4248dfe461ec0504a13628401020fc22638584a8f2f5206a13b2f233898c78359b21c8226024d0a7a93df5eb6c282bdbf005a4aab497e096f2847" + + "76c71cee57932a8fb89f6d6b8743b60a4ea374899a94a2e0f218d5c55818cefb1790c8529a76dba31ebb0f4592d709b49587d2317970d39c086f18dd244291d9" + + "eedb16705e53e3350591bd4ff4566a3595ac0f0ce24b5e112a3d033bc51b6fea0a92296dea7f5e20bf6ee6bc347d868fda193c395b9bb147e55e5a9f67cfe741" + + "7eea7d699b155bd13804204df7ea91fa9249e4474dddf35188f77019c67d201e4c10d7079c5ad492a71afff9a23ca7e900ba7d1bdeaf3270514d8eb35eab8a0a" + + "718bb7273aeb37768fa589ed8ab01fbf4027f4ebdbbae128d21e485f061c20183a9bc2e31edbda0727442e9d58eb0fe198440fe199e02e77c0f7b99973f1f74c" + + "c9089a51ab96c94a84d66e6aa48b2d0a4543adb5a789039a2aa7b335ca85c91026c7d3c894da53ae364188c3fd92f78e01d080399884a47385aa792e38150cda" + + "a8620b2ebeca41fbc773bb837b5e724d6eb2de570d99858df0d7d97067fb8103b21757873b735097b35d3bea8fd1c359a9e8a63c1540c76c9784cf8d975e995c" + + "778401b94a2e66e6993ad67ad3ecdc2acb17779f1ea8606827ec92b11c728f8c3b6d3f04a3e6ed05ff81dd76d5dc5695a50377bc135aaf1671cf68b750315493" + + "6c64510164d53312bf3c41740c7a237b05faf4a191bd8a95dafa068dbcf370255c725900ce5c934f36feadcfe55b687c440574c1f06f39d207a8553d39156a24" + + "845f64fd8324bb85312979dead74f764c9677aab89801ad4f927f1c00f12e28f22422bb44200d1969d9ab377dd6b099dc6dbc3222e9321b2c1e84f8e2f07731c"), + }, + { + size: 1024, + seed: hexutil.MustDecode("0x290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563"), + cache: hexutil.MustDecode("0x" + + "1f56855d59cc5a085720899b4377a0198f1abe948d85fe5820dc0e346b7c0931b9cde8e541d751de3b2b3275d0aabfae316209d5879297d8bd99f8a033c9d4df" + + "35add1029f4e6404a022d504fb8023e42989aba985a65933b0109c7218854356f9284983c9e7de97de591828ae348b63d1fc78d8db58157344d4e06530ffd422" + + "5c7f6080d451ff94961ec2dd9e28e6d81b49102451676dbdcb6ef1094c1e8b29e7e808d47b2ba5aeb52dabf00d5f0ee08c116289cbf56d8132e5ca557c3d6220" + + "5ba3a48539acabfd4ca3c89e3aaa668e24ffeaeb9eb0136a9fc5a8a676b6d5ad76175eeda0a1fa44b5ff5591079e4b7f581569b6c82416adcb82d7e92980df67" + + "2248c4024013e7be52cf91a82491627d9e6d80eda2770ab82badc5e120cd33a4c84495f718b57396a8f397e797087fad81fa50f0e2f5da71e40816a85de35a96" + + "3cd351364905c45b3116ff25851d43a2ca1d2aa5cdb408440dabef8c57778fc18608bf431d0c7ffd37649a21a7bb9d90def39c821669dbaf165c0262434dfb08" + + "5d057a12de4a7a59fd2dfc931c29c20371abf748b69b618a9bd485b3fb3166cad4d3d27edf0197aabeceb28b96670bdf020f26d1bb9b564aaf82d866bdffd6d4" + + "1aea89e20b15a5d1264ab01d1556bfc2a266081609d60928216bd9646038f07de9fedcc9f2b86ab1b07d7bd88ba1df08b3d89b2ac789001b48a723f217debcb7" + + "090303a3ef50c1d5d99a75c640ec2b401ab149e06511753d8c49cafdde2929ae61e09cc0f0319d262869d21ead9e0cf5ff2de3dbedfb994f32432d2e4aa44c82" + + "7c42781d1477fe03ea0772998e776d63363c6c3edd2d52c89b4d2c9d89cdd90fa33b2b41c8e3f78ef06fe90bcf5cc5756d33a032f16b744141aaa8852bb4cb3a" + + "40792b93489c6d6e56c235ec4aa36c263e9b766a4daaff34b2ea709f9f811aef498a65bfbc1deffd36fcc4d1a123345fac7bf57a1fb50394843cd28976a6c7ff" + + "fe70f7b8d8f384aa06e2c9964c92a8788cef397fffdd35181b42a35d5d98cd7244bbd09e802888d7efc0311ae58e0961e3656205df4bdc553f317df4b6ede4ca" + + "846294a32aec830ab1aa5aac4e78b821c35c70fd752fec353e373bf9be656e775a0111bcbeffdfebd3bd5251d27b9f6971aa561a2bd27a99d61b2ce3965c3726" + + "1e114353e6a31b09340f4078b8a8c6ce6ff4213067a8f21020f78aff4f8b472b701ef730aacb8ce7806ea31b14abe8f8efdd6357ca299d339abc4e43ba324ad1" + + "efe6eb1a5a6e137daa6ec9f6be30931ca368a944cfcf2a0a29f9a9664188f0466e6f078c347f9fe26a9a89d2029462b19245f24ace47aecace6ef85a4e96b31b" + + "5f470eb0165c6375eb8f245d50a25d521d1e569e3b2dccce626752bb26eae624a24511e831a81fab6898a791579f462574ca4851e6588116493dbccc3072e0c5"), + }, + } + for i, tt := range tests { + if cache := generateCache(tt.size, tt.seed); !bytes.Equal(cache, tt.cache) { + t.Errorf("cache %d: content mismatch: have %x, want %x", i, cache, tt.cache) + } + } +} + +func TestDatasetGeneration(t *testing.T) { + tests := []struct { + cacheSize uint64 + cacheSeed []byte + datasetSize uint64 + dataset []byte + }{ + { + cacheSize: 1024, + cacheSeed: make([]byte, 32), + datasetSize: 32 * 1024, + dataset: hexutil.MustDecode("0x" + + "4bc09fbd530a041dd2ec296110a29e8f130f179c59d223f51ecce3126e8b0c74326abc2f32ccd9d7f976bd0944e3ccf8479db39343cbbffa467046ca97e2da63" + + "da5f9d9688c7c33ab7b8aace570e422fa48b24659b72fc534669209d66389ca15b099c5604601e7581488e3bd6925cec0f12d465f8004d4fa84793f8e1e46a1b" + + "31b7298991c6142f4f0b6e6b296728ae5fa63ccb667b61fbb1b078003d18d97b906af157debed5e6c55d5a61cae90c85f9e97d565314a2f9fd9e0c08430547d0" + + "7cfcee3271f921b95c32a11596219abaa30abc62c2c72c6725078c436c677320594df6bcb92134c1b114fffec982a1f68f13a9f812f074b9fb9c78f2cd4c1c90" + + 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"71c3a82f535c26cf6cb335e8e915fda393799d3dbe0e04b907ed3612d12ac95783a6876cd986d2a13b82192532e02c250eaa42f891d2481655fa4494c723fe00" + + "87d224444245eb5b0eade5f741b025db1992a8ad0dce51b0c1af4a18a9e244f9f755891adf0f19179c7baa6c32bffc91e0b03c4ed3aaee1978b6a1f03b87ac6a" + + "fc3b9e7030bb212b17de198edfccde29d04224798c1204e47ea235f048724fac62d637d1ba0ee3922048fcf79c746b6c0c036d882e3491fd72bad6e009c6403e" + + "55876f4d31330caa02aedd0b0c121c3c41e736853a08071f0dd4ddc7412db0bbe274a9ac2932552bb37c40e72c2ef1d7cca8236942e480d709d3ea9d5ae0a1b7", + ), + }, + } + for i, tt := range tests { + rawCache := generateCache(tt.cacheSize, tt.cacheSeed) + cache := prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + + if dataset := generateDataset(tt.datasetSize, cache); !bytes.Equal(dataset, tt.dataset) { + t.Errorf("dataset %d: content mismatch: have %x, want %x", i, dataset, tt.dataset) + } + } +} + +// Tests whether the hashimoto lookup works for both light as well as the full +// datasets. +func TestHashimoto(t *testing.T) { + // Create the verification cache and mining dataset + var ( + rawCache = generateCache(1024, make([]byte, 32)) + cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + rawDataset = generateDataset(32*1024, cache) + dataset = prepare(uint64(len(rawDataset)), bytes.NewReader(rawDataset)) + ) + // Create a block to verify + hash := hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") + nonce := uint64(0) + + wantDigest := hexutil.MustDecode("0xe4073cffaef931d37117cefd9afd27ea0f1cad6a981dd2605c4a1ac97c519800") + wantResult := hexutil.MustDecode("0xd3539235ee2e6f8db665c0a72169f55b7f6c605712330b778ec3944f0eb5a557") + + digest, result := hashimotoLight(32*1024, cache, hash, nonce) + if !bytes.Equal(digest, wantDigest) { + t.Errorf("light hashimoto digest mismatch: have %x, want %x", digest, wantDigest) + } + if !bytes.Equal(result, wantResult) { + t.Errorf("light hashimoto result mismatch: have %x, want %x", result, wantResult) + } + digest, result = hashimotoFull(32*1024, dataset, hash, nonce) + if !bytes.Equal(digest, wantDigest) { + t.Errorf("full hashimoto digest mismatch: have %x, want %x", digest, wantDigest) + } + if !bytes.Equal(result, wantResult) { + t.Errorf("full hashimoto result mismatch: have %x, want %x", result, wantResult) + } +} + +// Becnhmarks the cache generation performance. +func BenchmarkCacheGeneration(b *testing.B) { + for i := 0; i < b.N; i++ { + generateCache(cacheSize(1), make([]byte, 32)) + } +} + +// Becnhmarks the dataset (small) generation performance. +func BenchmarkSmallDatasetGeneration(b *testing.B) { + rawCache := generateCache(65536, make([]byte, 32)) + cache := prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + + b.ResetTimer() + for i := 0; i < b.N; i++ { + generateDataset(32*65536, cache) + } +} + +// Becnhmarks the light verification performace. +func BenchmarkHashimotoLight(b *testing.B) { + var ( + rawCache = generateCache(cacheSize(1), make([]byte, 32)) + cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + hash = hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") + ) + b.ResetTimer() + for i := 0; i < b.N; i++ { + hashimotoLight(datasetSize(1), cache, hash, 0) + } +} + +// Becnhmarks the full (small) verification performace. +func BenchmarkHashimotoFullSmall(b *testing.B) { + var ( + rawCache = generateCache(65536, make([]byte, 32)) + cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + rawDataset = generateDataset(32*65536, cache) + dataset = prepare(uint64(len(rawDataset)), bytes.NewReader(rawDataset)) + hash = hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") + ) + b.ResetTimer() + for i := 0; i < b.N; i++ { + hashimotoFull(32*65536, dataset, hash, 0) + } +} diff --git a/pow/xor.go b/pow/xor.go new file mode 100644 index 0000000000..558aeb4690 --- /dev/null +++ b/pow/xor.go @@ -0,0 +1,85 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Source: https://golang.org/src/crypto/cipher/xor.go + +package pow + +import ( + "runtime" + "unsafe" +) + +const wordSize = int(unsafe.Sizeof(uintptr(0))) +const supportsUnaligned = runtime.GOARCH == "386" || runtime.GOARCH == "amd64" || runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" || runtime.GOARCH == "s390x" + +// fastXORBytes xors in bulk. It only works on architectures that +// support unaligned read/writes. +func fastXORBytes(dst, a, b []byte) int { + n := len(a) + if len(b) < n { + n = len(b) + } + + w := n / wordSize + if w > 0 { + dw := *(*[]uintptr)(unsafe.Pointer(&dst)) + aw := *(*[]uintptr)(unsafe.Pointer(&a)) + bw := *(*[]uintptr)(unsafe.Pointer(&b)) + for i := 0; i < w; i++ { + dw[i] = aw[i] ^ bw[i] + } + } + + for i := (n - n%wordSize); i < n; i++ { + dst[i] = a[i] ^ b[i] + } + + return n +} + +func safeXORBytes(dst, a, b []byte) int { + n := len(a) + if len(b) < n { + n = len(b) + } + for i := 0; i < n; i++ { + dst[i] = a[i] ^ b[i] + } + return n +} + +// xorBytes xors the bytes in a and b. The destination is assumed to have enough +// space. Returns the number of bytes xor'd. +func xorBytes(dst, a, b []byte) int { + if supportsUnaligned { + return fastXORBytes(dst, a, b) + } + // TODO(hanwen): if (dst, a, b) have common alignment + // we could still try fastXORBytes. It is not clear + // how often this happens, and it's only worth it if + // the block encryption itself is hardware + // accelerated. + return safeXORBytes(dst, a, b) +} + +// fastXORWords XORs multiples of 4 or 8 bytes (depending on architecture.) +// The arguments are assumed to be of equal length. +func fastXORWords(dst, a, b []byte) { + dw := *(*[]uintptr)(unsafe.Pointer(&dst)) + aw := *(*[]uintptr)(unsafe.Pointer(&a)) + bw := *(*[]uintptr)(unsafe.Pointer(&b)) + n := len(b) / wordSize + for i := 0; i < n; i++ { + dw[i] = aw[i] ^ bw[i] + } +} + +func xorWords(dst, a, b []byte) { + if supportsUnaligned { + fastXORWords(dst, a, b) + } else { + safeXORBytes(dst, a, b) + } +} From 567d41d9363706b4b13ce0903804e8acf214af49 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Sun, 5 Mar 2017 20:00:01 +0200 Subject: [PATCH 10/57] all: swap out the C++ ethash to the pure Go one (mining todo) --- accounts/abi/bind/backends/simulated.go | 3 +- cmd/utils/flags.go | 7 +- core/bench_test.go | 5 +- core/block_validator.go | 2 +- core/block_validator_test.go | 7 +- core/blockchain.go | 3 + core/blockchain_test.go | 34 +- core/chain_makers.go | 13 +- core/chain_makers_test.go | 3 +- core/chain_pow.go | 2 +- core/chain_pow_test.go | 28 +- core/dao_test.go | 13 +- eth/backend.go | 8 +- eth/handler_test.go | 3 +- eth/helper_test.go | 3 +- internal/ethapi/api.go | 8 +- les/helper_test.go | 3 +- light/lightchain.go | 3 + light/lightchain_test.go | 14 +- light/odr_test.go | 3 +- light/txpool_test.go | 3 +- log/format.go | 1 - miner/agent.go | 4 +- miner/miner.go | 2 +- miner/remote_agent.go | 7 +- pow/block.go | 37 - pow/ethash.go | 1158 +++---------------- pow/ethash_algo.go | 1071 +++++++++++++++++ pow/{ethash_test.go => ethash_algo_test.go} | 8 +- pow/pow.go | 44 +- tests/block_test_util.go | 4 +- 31 files changed, 1348 insertions(+), 1156 deletions(-) delete mode 100644 pow/block.go create mode 100644 pow/ethash_algo.go rename pow/{ethash_test.go => ethash_algo_test.go} (99%) diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go index e21ffe1f8b..2e6796de60 100644 --- a/accounts/abi/bind/backends/simulated.go +++ b/accounts/abi/bind/backends/simulated.go @@ -33,6 +33,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" "golang.org/x/net/context" ) @@ -62,7 +63,7 @@ type SimulatedBackend struct { func NewSimulatedBackend(accounts ...core.GenesisAccount) *SimulatedBackend { database, _ := ethdb.NewMemDatabase() core.WriteGenesisBlockForTesting(database, accounts...) - blockchain, _ := core.NewBlockChain(database, chainConfig, new(core.FakePow), new(event.TypeMux), vm.Config{}) + blockchain, _ := core.NewBlockChain(database, chainConfig, new(pow.FakePow), new(event.TypeMux), vm.Config{}) backend := &SimulatedBackend{database: database, blockchain: blockchain} backend.rollback() return backend diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 04db9a16f3..00599e82a4 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -28,7 +28,6 @@ import ( "strconv" "strings" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts/keystore" "github.com/ethereum/go-ethereum/common" @@ -922,11 +921,11 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai } chainConfig := MakeChainConfigFromDb(ctx, chainDb) - pow := pow.PoW(core.FakePow{}) + seal := pow.PoW(pow.FakePow{}) if !ctx.GlobalBool(FakePoWFlag.Name) { - pow = ethash.New() + seal = pow.NewFullEthash("", "") } - chain, err = core.NewBlockChain(chainDb, chainConfig, pow, new(event.TypeMux), vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}) + chain, err = core.NewBlockChain(chainDb, chainConfig, seal, new(event.TypeMux), vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}) if err != nil { Fatalf("Could not start chainmanager: %v", err) } diff --git a/core/bench_test.go b/core/bench_test.go index 8a16005579..42d50a7b12 100644 --- a/core/bench_test.go +++ b/core/bench_test.go @@ -31,6 +31,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) func BenchmarkInsertChain_empty_memdb(b *testing.B) { @@ -171,7 +172,7 @@ func benchInsertChain(b *testing.B, disk bool, gen func(int, *BlockGen)) { // Time the insertion of the new chain. // State and blocks are stored in the same DB. evmux := new(event.TypeMux) - chainman, _ := NewBlockChain(db, ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, FakePow{}, evmux, vm.Config{}) + chainman, _ := NewBlockChain(db, ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, pow.FakePow{}, evmux, vm.Config{}) defer chainman.Stop() b.ReportAllocs() b.ResetTimer() @@ -281,7 +282,7 @@ func benchReadChain(b *testing.B, full bool, count uint64) { if err != nil { b.Fatalf("error opening database at %v: %v", dir, err) } - chain, err := NewBlockChain(db, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + chain, err := NewBlockChain(db, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) if err != nil { b.Fatalf("error creating chain: %v", err) } diff --git a/core/block_validator.go b/core/block_validator.go index ed5cc3ab6f..f93a9f40ba 100644 --- a/core/block_validator.go +++ b/core/block_validator.go @@ -244,7 +244,7 @@ func ValidateHeader(config *params.ChainConfig, pow pow.PoW, header *types.Heade if checkPow { // Verify the nonce of the header. Return an error if it's not valid - if !pow.Verify(types.NewBlockWithHeader(header)) { + if err := pow.Verify(types.NewBlockWithHeader(header)); err != nil { return &BlockNonceErr{header.Number, header.Hash(), header.Nonce.Uint64()} } } diff --git a/core/block_validator_test.go b/core/block_validator_test.go index 01931efd24..c13aa83db2 100644 --- a/core/block_validator_test.go +++ b/core/block_validator_test.go @@ -28,6 +28,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) func testChainConfig() *params.ChainConfig { @@ -40,7 +41,7 @@ func proc() (Validator, *BlockChain) { var mux event.TypeMux WriteTestNetGenesisBlock(db) - blockchain, err := NewBlockChain(db, testChainConfig(), thePow(), &mux, vm.Config{}) + blockchain, err := NewBlockChain(db, testChainConfig(), pow.NewTestEthash(), &mux, vm.Config{}) if err != nil { fmt.Println(err) } @@ -54,13 +55,13 @@ func TestNumber(t *testing.T) { cfg := testChainConfig() header := makeHeader(cfg, chain.Genesis(), statedb) header.Number = big.NewInt(3) - err := ValidateHeader(cfg, FakePow{}, header, chain.Genesis().Header(), false, false) + err := ValidateHeader(cfg, pow.FakePow{}, header, chain.Genesis().Header(), false, false) if err != BlockNumberErr { t.Errorf("expected block number error, got %q", err) } header = makeHeader(cfg, chain.Genesis(), statedb) - err = ValidateHeader(cfg, FakePow{}, header, chain.Genesis().Header(), false, false) + err = ValidateHeader(cfg, pow.FakePow{}, header, chain.Genesis().Header(), false, false) if err == BlockNumberErr { t.Errorf("didn't expect block number error") } diff --git a/core/blockchain.go b/core/blockchain.go index 0c752b3f92..765a4b318f 100644 --- a/core/blockchain.go +++ b/core/blockchain.go @@ -223,6 +223,9 @@ func (self *BlockChain) loadLastState() error { log.Info("Loaded most recent local full block", "number", self.currentBlock.Number(), "hash", self.currentBlock.Hash(), "td", blockTd) log.Info("Loaded most recent local fast block", "number", self.currentFastBlock.Number(), "hash", self.currentFastBlock.Hash(), "td", fastTd) + // Try to be smart and issue a pow verification for the head to pre-generate caches + go self.pow.Verify(types.NewBlockWithHeader(currentHeader)) + return nil } diff --git a/core/blockchain_test.go b/core/blockchain_test.go index 99b155620b..2f06f0735b 100644 --- a/core/blockchain_test.go +++ b/core/blockchain_test.go @@ -27,7 +27,6 @@ import ( "testing" "time" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -45,15 +44,10 @@ func init() { runtime.GOMAXPROCS(runtime.NumCPU()) } -func thePow() pow.PoW { - pow, _ := ethash.NewForTesting() - return pow -} - func theBlockChain(db ethdb.Database, t *testing.T) *BlockChain { var eventMux event.TypeMux WriteTestNetGenesisBlock(db) - blockchain, err := NewBlockChain(db, testChainConfig(), thePow(), &eventMux, vm.Config{}) + blockchain, err := NewBlockChain(db, testChainConfig(), pow.NewTestEthash(), &eventMux, vm.Config{}) if err != nil { t.Error("failed creating blockchain:", err) t.FailNow() @@ -476,7 +470,7 @@ func chm(genesis *types.Block, db ethdb.Database) *BlockChain { chainDb: db, genesisBlock: genesis, eventMux: &eventMux, - pow: FakePow{}, + pow: pow.FakePow{}, config: testChainConfig(), } valFn := func() HeaderValidator { return bc.Validator() } @@ -615,7 +609,7 @@ func testReorgBadHashes(t *testing.T, full bool) { defer func() { delete(BadHashes, headers[3].Hash()) }() } // Create a new chain manager and check it rolled back the state - ncm, err := NewBlockChain(db, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + ncm, err := NewBlockChain(db, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) if err != nil { t.Fatalf("failed to create new chain manager: %v", err) } @@ -736,7 +730,7 @@ func TestFastVsFullChains(t *testing.T) { archiveDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(archiveDb, GenesisAccount{address, funds}) - archive, _ := NewBlockChain(archiveDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + archive, _ := NewBlockChain(archiveDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) if n, err := archive.InsertChain(blocks); err != nil { t.Fatalf("failed to process block %d: %v", n, err) @@ -744,7 +738,7 @@ func TestFastVsFullChains(t *testing.T) { // Fast import the chain as a non-archive node to test fastDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(fastDb, GenesisAccount{address, funds}) - fast, _ := NewBlockChain(fastDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + fast, _ := NewBlockChain(fastDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) headers := make([]*types.Header, len(blocks)) for i, block := range blocks { @@ -820,7 +814,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { archiveDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(archiveDb, GenesisAccount{address, funds}) - archive, _ := NewBlockChain(archiveDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + archive, _ := NewBlockChain(archiveDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) if n, err := archive.InsertChain(blocks); err != nil { t.Fatalf("failed to process block %d: %v", n, err) @@ -832,7 +826,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Import the chain as a non-archive node and ensure all pointers are updated fastDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(fastDb, GenesisAccount{address, funds}) - fast, _ := NewBlockChain(fastDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + fast, _ := NewBlockChain(fastDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) headers := make([]*types.Header, len(blocks)) for i, block := range blocks { @@ -851,7 +845,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Import the chain as a light node and ensure all pointers are updated lightDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(lightDb, GenesisAccount{address, funds}) - light, _ := NewBlockChain(lightDb, testChainConfig(), FakePow{}, new(event.TypeMux), vm.Config{}) + light, _ := NewBlockChain(lightDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) if n, err := light.InsertHeaderChain(headers, 1); err != nil { t.Fatalf("failed to insert header %d: %v", n, err) @@ -917,7 +911,7 @@ func TestChainTxReorgs(t *testing.T) { }) // Import the chain. This runs all block validation rules. evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) if i, err := blockchain.InsertChain(chain); err != nil { t.Fatalf("failed to insert original chain[%d]: %v", i, err) } @@ -991,7 +985,7 @@ func TestLogReorgs(t *testing.T) { ) evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) subs := evmux.Subscribe(RemovedLogsEvent{}) chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 2, func(i int, gen *BlockGen) { @@ -1028,7 +1022,7 @@ func TestReorgSideEvent(t *testing.T) { ) evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 3, func(i int, gen *BlockGen) {}) if _, err := blockchain.InsertChain(chain); err != nil { @@ -1104,7 +1098,7 @@ func TestCanonicalBlockRetrieval(t *testing.T) { ) evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 10, func(i int, gen *BlockGen) {}) @@ -1147,7 +1141,7 @@ func TestEIP155Transition(t *testing.T) { mux event.TypeMux ) - blockchain, _ := NewBlockChain(db, config, FakePow{}, &mux, vm.Config{}) + blockchain, _ := NewBlockChain(db, config, pow.FakePow{}, &mux, vm.Config{}) blocks, _ := GenerateChain(config, genesis, db, 4, func(i int, block *BlockGen) { var ( tx *types.Transaction @@ -1251,7 +1245,7 @@ func TestEIP161AccountRemoval(t *testing.T) { } mux event.TypeMux - blockchain, _ = NewBlockChain(db, config, FakePow{}, &mux, vm.Config{}) + blockchain, _ = NewBlockChain(db, config, pow.FakePow{}, &mux, vm.Config{}) ) blocks, _ := GenerateChain(config, genesis, db, 3, func(i int, block *BlockGen) { var ( diff --git a/core/chain_makers.go b/core/chain_makers.go index 8b3b015a8c..f63496fdc3 100644 --- a/core/chain_makers.go +++ b/core/chain_makers.go @@ -43,17 +43,6 @@ func MakeChainConfig() *params.ChainConfig { } } -// FakePow is a non-validating proof of work implementation. -// It returns true from Verify for any block. -type FakePow struct{} - -func (f FakePow) Search(block pow.Block, stop <-chan struct{}, index int) (uint64, []byte) { - return 0, nil -} -func (f FakePow) Verify(block pow.Block) bool { return true } -func (f FakePow) GetHashrate() int64 { return 0 } -func (f FakePow) Turbo(bool) {} - // So we can deterministically seed different blockchains var ( canonicalSeed = 1 @@ -256,7 +245,7 @@ func newCanonical(n int, full bool) (ethdb.Database, *BlockChain, error) { // Initialize a fresh chain with only a genesis block genesis, _ := WriteTestNetGenesisBlock(db) - blockchain, _ := NewBlockChain(db, MakeChainConfig(), FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, MakeChainConfig(), pow.FakePow{}, evmux, vm.Config{}) // Create and inject the requested chain if n == 0 { return db, blockchain, nil diff --git a/core/chain_makers_test.go b/core/chain_makers_test.go index 5c563de469..82751553ff 100644 --- a/core/chain_makers_test.go +++ b/core/chain_makers_test.go @@ -26,6 +26,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) func ExampleGenerateChain() { @@ -82,7 +83,7 @@ func ExampleGenerateChain() { // Import the chain. This runs all block validation rules. evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, chainConfig, FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, chainConfig, pow.FakePow{}, evmux, vm.Config{}) if i, err := blockchain.InsertChain(chain); err != nil { fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err) return diff --git a/core/chain_pow.go b/core/chain_pow.go index c3b5788c19..e5ccd87e20 100644 --- a/core/chain_pow.go +++ b/core/chain_pow.go @@ -65,7 +65,7 @@ func verifyNonces(checker pow.PoW, items []pow.Block) (chan<- struct{}, <-chan n for i := 0; i < workers; i++ { go func() { for index := range tasks { - results <- nonceCheckResult{index: index, valid: checker.Verify(items[index])} + results <- nonceCheckResult{index: index, valid: checker.Verify(items[index]) == nil} } }() } diff --git a/core/chain_pow_test.go b/core/chain_pow_test.go index 1400b166f0..311ca128e6 100644 --- a/core/chain_pow_test.go +++ b/core/chain_pow_test.go @@ -17,6 +17,7 @@ package core import ( + "errors" "math/big" "runtime" "testing" @@ -35,12 +36,16 @@ type failPow struct { failing uint64 } -func (pow failPow) Search(pow.Block, <-chan struct{}, int) (uint64, []byte) { +func (pow failPow) Search(pow.Block, <-chan struct{}) (uint64, []byte) { return 0, nil } -func (pow failPow) Verify(block pow.Block) bool { return block.NumberU64() != pow.failing } -func (pow failPow) GetHashrate() int64 { return 0 } -func (pow failPow) Turbo(bool) {} +func (pow failPow) Verify(block pow.Block) error { + if block.NumberU64() == pow.failing { + return errors.New("failed") + } + return nil +} +func (pow failPow) Hashrate() float64 { return 0 } // delayedPow is a non-validating proof of work implementation, that returns true // from Verify for all blocks, but delays them the configured amount of time. @@ -48,12 +53,11 @@ type delayedPow struct { delay time.Duration } -func (pow delayedPow) Search(pow.Block, <-chan struct{}, int) (uint64, []byte) { +func (pow delayedPow) Search(pow.Block, <-chan struct{}) (uint64, []byte) { return 0, nil } -func (pow delayedPow) Verify(block pow.Block) bool { time.Sleep(pow.delay); return true } -func (pow delayedPow) GetHashrate() int64 { return 0 } -func (pow delayedPow) Turbo(bool) {} +func (pow delayedPow) Verify(block pow.Block) error { time.Sleep(pow.delay); return nil } +func (pow delayedPow) Hashrate() float64 { return 0 } // Tests that simple POW verification works, for both good and bad blocks. func TestPowVerification(t *testing.T) { @@ -75,11 +79,11 @@ func TestPowVerification(t *testing.T) { switch { case full && valid: - _, results = verifyNoncesFromBlocks(FakePow{}, []*types.Block{blocks[i]}) + _, results = verifyNoncesFromBlocks(pow.FakePow{}, []*types.Block{blocks[i]}) case full && !valid: _, results = verifyNoncesFromBlocks(failPow{blocks[i].NumberU64()}, []*types.Block{blocks[i]}) case !full && valid: - _, results = verifyNoncesFromHeaders(FakePow{}, []*types.Header{headers[i]}) + _, results = verifyNoncesFromHeaders(pow.FakePow{}, []*types.Header{headers[i]}) case !full && !valid: _, results = verifyNoncesFromHeaders(failPow{headers[i].Number.Uint64()}, []*types.Header{headers[i]}) } @@ -134,11 +138,11 @@ func testPowConcurrentVerification(t *testing.T, threads int) { switch { case full && valid: - _, results = verifyNoncesFromBlocks(FakePow{}, blocks) + _, results = verifyNoncesFromBlocks(pow.FakePow{}, blocks) case full && !valid: _, results = verifyNoncesFromBlocks(failPow{uint64(len(blocks) - 1)}, blocks) case !full && valid: - _, results = verifyNoncesFromHeaders(FakePow{}, headers) + _, results = verifyNoncesFromHeaders(pow.FakePow{}, headers) case !full && !valid: _, results = verifyNoncesFromHeaders(failPow{uint64(len(headers) - 1)}, headers) } diff --git a/core/dao_test.go b/core/dao_test.go index b8b4c71cfa..45b3235c71 100644 --- a/core/dao_test.go +++ b/core/dao_test.go @@ -24,6 +24,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) // Tests that DAO-fork enabled clients can properly filter out fork-commencing @@ -40,12 +41,12 @@ func TestDAOForkRangeExtradata(t *testing.T) { proDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(proDb) proConf := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true} - proBc, _ := NewBlockChain(proDb, proConf, new(FakePow), new(event.TypeMux), vm.Config{}) + proBc, _ := NewBlockChain(proDb, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) conDb, _ := ethdb.NewMemDatabase() WriteGenesisBlockForTesting(conDb) conConf := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false} - conBc, _ := NewBlockChain(conDb, conConf, new(FakePow), new(event.TypeMux), vm.Config{}) + conBc, _ := NewBlockChain(conDb, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) if _, err := proBc.InsertChain(prefix); err != nil { t.Fatalf("pro-fork: failed to import chain prefix: %v", err) @@ -58,7 +59,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Create a pro-fork block, and try to feed into the no-fork chain db, _ = ethdb.NewMemDatabase() WriteGenesisBlockForTesting(db) - bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux), vm.Config{}) + bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { @@ -79,7 +80,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Create a no-fork block, and try to feed into the pro-fork chain db, _ = ethdb.NewMemDatabase() WriteGenesisBlockForTesting(db) - bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux), vm.Config{}) + bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { @@ -101,7 +102,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Verify that contra-forkers accept pro-fork extra-datas after forking finishes db, _ = ethdb.NewMemDatabase() WriteGenesisBlockForTesting(db) - bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux), vm.Config{}) + bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { @@ -117,7 +118,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Verify that pro-forkers accept contra-fork extra-datas after forking finishes db, _ = ethdb.NewMemDatabase() WriteGenesisBlockForTesting(db) - bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux), vm.Config{}) + bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { diff --git a/eth/backend.go b/eth/backend.go index 5a8b41f5d2..024520b130 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -288,15 +288,15 @@ func CreatePoW(config *Config) (pow.PoW, error) { switch { case config.PowFake: log.Warn("Ethash used in fake mode") - return pow.PoW(core.FakePow{}), nil + return pow.FakePow{}, nil case config.PowTest: log.Warn("Ethash used in test mode") - return ethash.NewForTesting() + return pow.NewTestEthash(), nil case config.PowShared: log.Warn("Ethash used in shared mode") - return ethash.NewShared(), nil + return pow.NewSharedEthash(), nil default: - return ethash.New(), nil + return pow.NewFullEthash("", ""), nil } } diff --git a/eth/handler_test.go b/eth/handler_test.go index 03d5404a4d..683c8f71e7 100644 --- a/eth/handler_test.go +++ b/eth/handler_test.go @@ -34,6 +34,7 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) var bigTxGas = new(big.Int).SetUint64(params.TxGas) @@ -468,7 +469,7 @@ func testDAOChallenge(t *testing.T, localForked, remoteForked bool, timeout bool // Create a DAO aware protocol manager var ( evmux = new(event.TypeMux) - pow = new(core.FakePow) + pow = new(pow.FakePow) db, _ = ethdb.NewMemDatabase() genesis = core.WriteGenesisBlockForTesting(db) config = ¶ms.ChainConfig{DAOForkBlock: big.NewInt(1), DAOForkSupport: localForked} diff --git a/eth/helper_test.go b/eth/helper_test.go index 0861c884bd..3ad31394aa 100644 --- a/eth/helper_test.go +++ b/eth/helper_test.go @@ -37,6 +37,7 @@ import ( "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) var ( @@ -53,7 +54,7 @@ var ( func newTestProtocolManager(fastSync bool, blocks int, generator func(int, *core.BlockGen), newtx chan<- []*types.Transaction) (*ProtocolManager, error) { var ( evmux = new(event.TypeMux) - pow = new(core.FakePow) + pow = new(pow.FakePow) db, _ = ethdb.NewMemDatabase() genesis = core.WriteGenesisBlockForTesting(db, testBank) chainConfig = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0)} // homestead set to 0 because of chain maker diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go index caa7421807..c8374fe18e 100644 --- a/internal/ethapi/api.go +++ b/internal/ethapi/api.go @@ -25,7 +25,6 @@ import ( "strings" "time" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts/keystore" "github.com/ethereum/go-ethereum/common" @@ -39,6 +38,7 @@ import ( "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/rpc" "github.com/syndtr/goleveldb/leveldb" @@ -1378,11 +1378,7 @@ func (api *PublicDebugAPI) SeedHash(ctx context.Context, number uint64) (string, if block == nil { return "", fmt.Errorf("block #%d not found", number) } - hash, err := ethash.GetSeedHash(number) - if err != nil { - return "", err - } - return fmt.Sprintf("0x%x", hash), nil + return fmt.Sprintf("0x%x", pow.EthashSeedHash(number)), nil } // PrivateDebugAPI is the collection of Etheruem APIs exposed over the private diff --git a/les/helper_test.go b/les/helper_test.go index 2c6f34a92e..f6293ad1a5 100644 --- a/les/helper_test.go +++ b/les/helper_test.go @@ -39,6 +39,7 @@ import ( "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" ) var ( @@ -134,7 +135,7 @@ func testRCL() RequestCostList { func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *core.BlockGen)) (*ProtocolManager, ethdb.Database, *LesOdr, error) { var ( evmux = new(event.TypeMux) - pow = new(core.FakePow) + pow = new(pow.FakePow) db, _ = ethdb.NewMemDatabase() genesis = core.WriteGenesisBlockForTesting(db, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) chainConfig = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0)} // homestead set to 0 because of chain maker diff --git a/light/lightchain.go b/light/lightchain.go index 773c0f38be..a45022e815 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -169,6 +169,9 @@ func (self *LightChain) loadLastState() error { headerTd := self.GetTd(header.Hash(), header.Number.Uint64()) log.Info("Loaded most recent local header", "number", header.Number, "hash", header.Hash(), "td", headerTd) + // Try to be smart and issue a pow verification for the head to pre-generate caches + go self.pow.Verify(types.NewBlockWithHeader(header)) + return nil } diff --git a/light/lightchain_test.go b/light/lightchain_test.go index 0ba9258873..8a99c69f13 100644 --- a/light/lightchain_test.go +++ b/light/lightchain_test.go @@ -22,7 +22,6 @@ import ( "runtime" "testing" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" @@ -67,7 +66,7 @@ func newCanonical(n int) (ethdb.Database, *LightChain, error) { // Initialize a fresh chain with only a genesis block genesis, _ := core.WriteTestNetGenesisBlock(db) - blockchain, _ := NewLightChain(&dummyOdr{db: db}, testChainConfig(), core.FakePow{}, evmux) + blockchain, _ := NewLightChain(&dummyOdr{db: db}, testChainConfig(), pow.FakePow{}, evmux) // Create and inject the requested chain if n == 0 { return db, blockchain, nil @@ -82,15 +81,10 @@ func init() { runtime.GOMAXPROCS(runtime.NumCPU()) } -func thePow() pow.PoW { - pow, _ := ethash.NewForTesting() - return pow -} - func theLightChain(db ethdb.Database, t *testing.T) *LightChain { var eventMux event.TypeMux core.WriteTestNetGenesisBlock(db) - LightChain, err := NewLightChain(&dummyOdr{db: db}, testChainConfig(), thePow(), &eventMux) + LightChain, err := NewLightChain(&dummyOdr{db: db}, testChainConfig(), pow.NewTestEthash(), &eventMux) if err != nil { t.Error("failed creating LightChain:", err) t.FailNow() @@ -311,7 +305,7 @@ func (odr *dummyOdr) Retrieve(ctx context.Context, req OdrRequest) error { func chm(genesis *types.Block, db ethdb.Database) *LightChain { odr := &dummyOdr{db: db} var eventMux event.TypeMux - bc := &LightChain{odr: odr, chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: core.FakePow{}} + bc := &LightChain{odr: odr, chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: pow.FakePow{}} bc.hc, _ = core.NewHeaderChain(db, testChainConfig(), bc.Validator, bc.getProcInterrupt) bc.bodyCache, _ = lru.New(100) bc.bodyRLPCache, _ = lru.New(100) @@ -394,7 +388,7 @@ func TestReorgBadHeaderHashes(t *testing.T) { core.BadHashes[headers[3].Hash()] = true defer func() { delete(core.BadHashes, headers[3].Hash()) }() // Create a new chain manager and check it rolled back the state - ncm, err := NewLightChain(&dummyOdr{db: db}, testChainConfig(), core.FakePow{}, new(event.TypeMux)) + ncm, err := NewLightChain(&dummyOdr{db: db}, testChainConfig(), pow.FakePow{}, new(event.TypeMux)) if err != nil { t.Fatalf("failed to create new chain manager: %v", err) } diff --git a/light/odr_test.go b/light/odr_test.go index 6987db6440..e2eced3469 100644 --- a/light/odr_test.go +++ b/light/odr_test.go @@ -33,6 +33,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" "golang.org/x/net/context" @@ -247,7 +248,7 @@ func testChainGen(i int, block *core.BlockGen) { func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { var ( evmux = new(event.TypeMux) - pow = new(core.FakePow) + pow = new(pow.FakePow) sdb, _ = ethdb.NewMemDatabase() ldb, _ = ethdb.NewMemDatabase() genesis = core.WriteGenesisBlockForTesting(sdb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) diff --git a/light/txpool_test.go b/light/txpool_test.go index af2dcbbef1..980c7c8987 100644 --- a/light/txpool_test.go +++ b/light/txpool_test.go @@ -29,6 +29,7 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" "golang.org/x/net/context" ) @@ -82,7 +83,7 @@ func TestTxPool(t *testing.T) { var ( evmux = new(event.TypeMux) - pow = new(core.FakePow) + pow = new(pow.FakePow) sdb, _ = ethdb.NewMemDatabase() ldb, _ = ethdb.NewMemDatabase() genesis = core.WriteGenesisBlockForTesting(sdb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) diff --git a/log/format.go b/log/format.go index c44ea8ed4b..e315b5237d 100644 --- a/log/format.go +++ b/log/format.go @@ -23,7 +23,6 @@ const ( // locationTrims are trimmed for display to avoid unwieldy log lines. var locationTrims = []string{ "github.com/ethereum/go-ethereum/", - "github.com/ethereum/ethash/", } // PrintOrigins sets or unsets log location (file:line) printing for terminal diff --git a/miner/agent.go b/miner/agent.go index 21300b5b91..3c407f20bb 100644 --- a/miner/agent.go +++ b/miner/agent.go @@ -111,7 +111,7 @@ func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) { log.Debug(fmt.Sprintf("(re)started agent[%d]. mining...\n", self.index)) // Mine - nonce, mixDigest := self.pow.Search(work.Block, stop, self.index) + nonce, mixDigest := self.pow.Search(work.Block, stop) if nonce != 0 { block := work.Block.WithMiningResult(types.EncodeNonce(nonce), common.BytesToHash(mixDigest)) self.returnCh <- &Result{work, block} @@ -121,5 +121,5 @@ func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) { } func (self *CpuAgent) GetHashRate() int64 { - return self.pow.GetHashrate() + return int64(self.pow.Hashrate()) } diff --git a/miner/miner.go b/miner/miner.go index 33d77e174d..a91e1ef6b0 100644 --- a/miner/miner.go +++ b/miner/miner.go @@ -159,7 +159,7 @@ func (self *Miner) Mining() bool { } func (self *Miner) HashRate() (tot int64) { - tot += self.pow.GetHashrate() + tot += int64(self.pow.Hashrate()) // do we care this might race? is it worth we're rewriting some // aspects of the worker/locking up agents so we can get an accurate // hashrate? diff --git a/miner/remote_agent.go b/miner/remote_agent.go index ec9d2c1991..08c5fc6f08 100644 --- a/miner/remote_agent.go +++ b/miner/remote_agent.go @@ -24,7 +24,6 @@ import ( "sync/atomic" "time" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/log" @@ -115,7 +114,7 @@ func (a *RemoteAgent) GetWork() ([3]string, error) { block := a.currentWork.Block res[0] = block.HashNoNonce().Hex() - seedHash, _ := ethash.GetSeedHash(block.NumberU64()) + seedHash := pow.EthashSeedHash(block.NumberU64()) res[1] = common.BytesToHash(seedHash).Hex() // Calculate the "target" to be returned to the external miner n := big.NewInt(1) @@ -145,8 +144,8 @@ func (a *RemoteAgent) SubmitWork(nonce types.BlockNonce, mixDigest, hash common. } // Make sure the PoW solutions is indeed valid block := work.Block.WithMiningResult(nonce, mixDigest) - if !a.pow.Verify(block) { - log.Warn(fmt.Sprintf("Invalid PoW submitted for %x", hash)) + if err := a.pow.Verify(block); err != nil { + log.Warn(fmt.Sprintf("Invalid PoW submitted for %x: %v", hash, err)) return false } // Solutions seems to be valid, return to the miner and notify acceptance diff --git a/pow/block.go b/pow/block.go deleted file mode 100644 index 11807113dc..0000000000 --- a/pow/block.go +++ /dev/null @@ -1,37 +0,0 @@ -// Copyright 2014 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package pow - -import ( - "math/big" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/types" -) - -type Block interface { - Difficulty() *big.Int - HashNoNonce() common.Hash - Nonce() uint64 - MixDigest() common.Hash - NumberU64() uint64 -} - -type ChainManager interface { - GetBlockByNumber(uint64) *types.Block - CurrentBlock() *types.Block -} diff --git a/pow/ethash.go b/pow/ethash.go index 91c758d94e..b22c65e0bd 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -17,1055 +17,189 @@ package pow import ( - "encoding/binary" - "io" + "bytes" + "errors" "math/big" - "runtime" "sync" - "sync/atomic" "time" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/hexutil" - "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/log" -) - -const ( - datasetInitBytes = 1 << 30 // Bytes in dataset at genesis - datasetGrowthBytes = 1 << 23 // Dataset growth per epoch - cacheInitBytes = 1 << 24 // Bytes in cache at genesis - cacheGrowthBytes = 1 << 17 // Cache growth per epoch - epochLength = 30000 // Blocks per epoch - mixBytes = 128 // Width of mix - hashBytes = 64 // Hash length in bytes - hashWords = 16 // Number of 32 bit ints in a hash - datasetParents = 256 // Number of parents of each dataset element - cacheRounds = 3 // Number of rounds in cache production - loopAccesses = 64 // Number of accesses in hashimoto loop + metrics "github.com/rcrowley/go-metrics" ) var ( - // Metadata fields to be compatible with the C++ ethash - ethashRevision = 23 // Data structure version - ethashMagic = hexutil.MustDecode("0xfee1deadbaddcafe") // Dataset dump magic number + ErrInvalidDifficulty = errors.New("non-positive difficulty") + ErrInvalidMixDigest = errors.New("invalid mix digest") + ErrInvalidPoW = errors.New("pow difficulty invalid") ) -// cacheSize calculates and returns the size of the ethash verification cache that -// belongs to a certain block number. The cache size grows linearly, however, we -// always take the highest prime below the linearly growing threshold in order to -// reduce the risk of accidental regularities leading to cyclic behavior. -func cacheSize(block uint64) uint64 { - // If we have a pre-generated value, use that - epoch := int(block / epochLength) - if epoch < len(cacheSizes) { - return cacheSizes[epoch] - } - // No known cache size, calculate manually (sanity branch only) - size := uint64(cacheInitBytes + cacheGrowthBytes*epoch - hashBytes) - for !new(big.Int).SetUint64(size / hashBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 - size -= 2 * hashBytes - } - return size +var ( + // maxUint256 is a big integer representing 2^256-1 + maxUint256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0)) +) + +// cache wraps an ethash cache with some metadata to allow easier concurrent use. +type cache struct { + epoch uint64 // Epoch for which this cache is relevant + cache []uint32 // The actual cache data content + used time.Time // Timestamp of the last use for smarter eviction + once sync.Once // Ensures the cache is generated only once + lock sync.Mutex // Ensures thread safety for updating the usage time } -// datasetSize calculates and returns the size of the ethash mining dataset that -// belongs to a certain block number. The dataset size grows linearly, however, we -// always take the highest prime below the linearly growing threshold in order to -// reduce the risk of accidental regularities leading to cyclic behavior. -func datasetSize(block uint64) uint64 { - // If we have a pre-generated value, use that - epoch := int(block / epochLength) - if epoch < len(datasetSizes) { - return datasetSizes[epoch] - } - // No known dataset size, calculate manually (sanity branch only) - size := uint64(datasetInitBytes + datasetGrowthBytes*epoch - mixBytes) - for !new(big.Int).SetUint64(size / mixBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 - size -= 2 * mixBytes - } - return size -} - -// seedHash is the seed to use for generating a vrification cache and the mining -// dataset. -func seedHash(block uint64) []byte { - seed := make([]byte, 32) - if block < epochLength { - return seed - } - keccak256 := crypto.Keccak256Hasher() - for i := 0; i < int(block/epochLength); i++ { - seed = keccak256(seed) - } - return seed -} - -// generateCache creates a verification cache of a given size for an input seed. -// The cache production process involves first sequentially filling up 32 MB of -// memory, then performing two passes of Sergio Demian Lerner's RandMemoHash -// algorithm from Strict Memory Hard Hashing Functions (2014). The output is a -// set of 524288 64-byte values. -func generateCache(size uint64, seed []byte) []byte { - // Print some debug logs to allow analysis on low end devices - logger := log.New("size", size, "seed", hexutil.Bytes(seed)) - logger.Debug("Generating ethash cache") - - defer func(start time.Time) { - logger.Debug("Generated ethash cache", "elapsed", common.PrettyDuration(time.Since(start))) - }(time.Now()) - - // Calculate the number of thoretical rows (we'll store in one buffer nonetheless) - rows := int(size) / hashBytes - - // Create a hasher to reuse between invocations - keccak512 := crypto.Keccak512Hasher() - - // Sequentially produce the initial dataset - cache := make([]byte, size) - copy(cache, keccak512(seed)) - for offset := uint64(hashBytes); offset < size; offset += hashBytes { - copy(cache[offset:], keccak512(cache[offset-hashBytes:offset])) - } - // Use a low-round version of randmemohash - temp := make([]byte, hashBytes) - - for i := 0; i < cacheRounds; i++ { - for j := 0; j < rows; j++ { - var ( - srcOff = ((j - 1 + rows) % rows) * hashBytes - dstOff = j * hashBytes - xorOff = (binary.LittleEndian.Uint32(cache[dstOff:]) % uint32(rows)) * hashBytes - ) - xorBytes(temp, cache[srcOff:srcOff+hashBytes], cache[xorOff:xorOff+hashBytes]) - copy(cache[dstOff:], keccak512(temp)) +// generate ensures that the cache content is generates. +func (c *cache) generate(test bool) { + c.once.Do(func() { + cacheSize := cacheSize(c.epoch*epochLength + 1) + if test { + cacheSize = 1024 } - } - return cache + rawCache := generateCache(cacheSize, seedHash(c.epoch*epochLength+1)) + c.cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + }) } -// prepare convers an ethash cache or dataset from a byte stream into the internal -// int representation. All ethash methods work with ints to avoid constant byte to -// int conversions as well as to handle both little and big endian systems. -func prepare(size uint64, r io.Reader) []uint32 { - ints := make([]uint32, size/4) +// Ethash is a PoW data struture implementing the ethash algorithm. +type Ethash struct { + cachedir string // Data directory to store the verification caches + dagdir string // Data directory to store full mining datasets - buffer := make([]byte, 4) - for i := 0; i < len(ints); i++ { - io.ReadFull(r, buffer) - ints[i] = binary.LittleEndian.Uint32(buffer) - } - return ints + caches map[uint64]*cache // In memory caches to avoid regenerating too often + future *cache // Pre-generated cache for the estimated future epoch + lock sync.Mutex // Ensures thread safety for the in-memory caches + + hashrate *metrics.StandardMeter // Meter tracking the average hashrate + + tester bool // Flag whether to use a smaller test dataset + shared bool // Flag whether to use a global chared dataset } -// fnv is an algorithm inspired by the FNV hash, which in some cases is used as -// a non-associative substitute for XOR. Note that we multiply the prime with -// the full 32-bit input, in contrast with the FNV-1 spec which multiplies the -// prime with one byte (octet) in turn. -func fnv(a, b uint32) uint32 { - return a*0x01000193 ^ b -} - -// fnvHash mixes in data into mix using the ethash fnv method. -func fnvHash(mix []uint32, data []uint32) { - for i := 0; i < len(mix); i++ { - mix[i] = mix[i]*0x01000193 ^ data[i] +// NewFullEthash creates a full sized ethash PoW scheme. +func NewFullEthash(cachedir, dagdir string) PoW { + return &Ethash{ + cachedir: cachedir, + dagdir: dagdir, + caches: make(map[uint64]*cache), } } -// generateDatasetItem combines data from 256 pseudorandomly selected cache nodes, -// and hashes that to compute a single dataset node. -func generateDatasetItem(cache []uint32, index uint32, keccak512 crypto.Hasher) []byte { - // Calculate the number of thoretical rows (we use one buffer nonetheless) - rows := uint32(len(cache) / hashWords) - - // Initialize the mix - mix := make([]byte, hashBytes) - - binary.LittleEndian.PutUint32(mix, cache[(index%rows)*hashWords]^index) - for i := 1; i < hashWords; i++ { - binary.LittleEndian.PutUint32(mix[i*4:], cache[(index%rows)*hashWords+uint32(i)]) +// NewTestEthash creates a small sized ethash PoW scheme useful only for testing +// purposes. +func NewTestEthash() PoW { + return &Ethash{ + caches: make(map[uint64]*cache), + tester: true, } - mix = keccak512(mix) - - // Convert the mix to uint32s to avoid constant bit shifting - intMix := make([]uint32, hashWords) - for i := 0; i < len(intMix); i++ { - intMix[i] = binary.LittleEndian.Uint32(mix[i*4:]) - } - // fnv it with a lot of random cache nodes based on index - for i := uint32(0); i < datasetParents; i++ { - parent := fnv(index^i, intMix[i%16]) % rows - fnvHash(intMix, cache[parent*hashWords:]) - } - // Flatten the uint32 mix into a binary one and return - for i, val := range intMix { - binary.LittleEndian.PutUint32(mix[i*4:], val) - } - return keccak512(mix) } -// generateDataset generates the entire ethash dataset for mining. -func generateDataset(size uint64, cache []uint32) []byte { - // Print some debug logs to allow analysis on low end devices - logger := log.New("size", size) - logger.Debug("Generating ethash dataset") +// NewSharedEthash creates a full sized ethash PoW shared between all requesters +// running in the same process. +func NewSharedEthash() PoW { + return &Ethash{ + caches: make(map[uint64]*cache), + shared: true, + } +} - defer func(start time.Time) { - logger.Debug("Generated ethash dataset", "elapsed", common.PrettyDuration(time.Since(start))) - }(time.Now()) +// Verify implements PoW, checking whether the given block satisfies the PoW +// difficulty requirements. +func (ethash *Ethash) Verify(block Block) error { + // Ensure twe have a valid difficulty for the block + difficulty := block.Difficulty() + if difficulty.Sign() <= 0 { + return ErrInvalidDifficulty + } + // Recompute the digest and PoW value and verify against the block + number := block.NumberU64() + cache := ethash.cache(number) - // Generate the dataset on many goroutines since it takes a while - dataset := make([]byte, size) - threads := runtime.NumCPU() + size := datasetSize(number) + if ethash.tester { + size = 32 * 1024 + } + digest, result := hashimotoLight(size, cache, block.HashNoNonce().Bytes(), block.Nonce()) + if !bytes.Equal(block.MixDigest().Bytes(), digest) { + return ErrInvalidMixDigest + } + target := new(big.Int).Div(maxUint256, difficulty) + if new(big.Int).SetBytes(result).Cmp(target) > 0 { + return ErrInvalidPoW + } + return nil +} - var pend sync.WaitGroup - pend.Add(threads) +// cache tries to retrieve a verification cache for the specified block number +// by first checking against a list of in-memory caches, then against caches +// stored on disk, and finally generating one if none can be found. +func (ethash *Ethash) cache(block uint64) []uint32 { + epoch := block / epochLength - var progress uint32 - for i := 0; i < threads; i++ { - go func(id int) { - defer pend.Done() + // If we have a PoW for that epoch, use that + ethash.lock.Lock() - // Create a hasher to reuse between invocations - keccak512 := crypto.Keccak512Hasher() - - // Calculate the data segment this thread should generate - batch := uint32(size / hashBytes / uint64(threads)) - start := uint32(id) * batch - limit := start + batch - if limit > uint32(size/hashBytes) { - limit = uint32(size / hashBytes) - } - // Calculate the dataset segment - percent := uint32(size / hashBytes / 100) - for index := start; index < limit; index++ { - copy(dataset[index*hashBytes:], generateDatasetItem(cache, index, keccak512)) - - if status := atomic.AddUint32(&progress, 1); status%percent == 0 { - logger.Info("Generating DAG in progress", "percentage", uint64(status*100)/(size/hashBytes)) + current, future := ethash.caches[epoch], (*cache)(nil) + if current == nil { + // No in-memory cache, evict the oldest if the cache limit was reached + for len(ethash.caches) >= 3 { + var evict *cache + for _, cache := range ethash.caches { + if evict == nil || evict.used.After(cache.used) { + evict = cache } } - }(i) - } - // Wait for all the generators to finish and return - pend.Wait() + delete(ethash.caches, evict.epoch) - return dataset -} - -// hashimoto aggregates data from the full dataset in order to produce our final -// value for a particular header hash and nonce. -func hashimoto(hash []byte, nonce uint64, size uint64, lookup func(index uint32) []uint32) ([]byte, []byte) { - // Calculate the number of thoretical rows (we use one buffer nonetheless) - rows := uint32(size / mixBytes) - - // Combine header+nonce into a 64 byte seed - seed := make([]byte, 40) - copy(seed, hash) - binary.LittleEndian.PutUint64(seed[32:], nonce) - - seed = crypto.Keccak512(seed) - seedHead := binary.LittleEndian.Uint32(seed) - - // Start the mix with replicated seed - mix := make([]uint32, mixBytes/4) - for i := 0; i < len(mix); i++ { - mix[i] = binary.LittleEndian.Uint32(seed[i%16*4:]) - } - // Mix in random dataset nodes - temp := make([]uint32, len(mix)) - - for i := 0; i < loopAccesses; i++ { - parent := fnv(uint32(i)^seedHead, mix[i%len(mix)]) % rows - for j := uint32(0); j < mixBytes/hashBytes; j++ { - copy(temp[j*hashWords:], lookup(2*parent+j)) + log.Debug("Evictinged ethash cache", "old", evict.epoch, "used", evict.used) } - fnvHash(mix, temp) - } - // Compress mix - for i := 0; i < len(mix); i += 4 { - mix[i/4] = fnv(fnv(fnv(mix[i], mix[i+1]), mix[i+2]), mix[i+3]) - } - mix = mix[:len(mix)/4] - - digest := make([]byte, common.HashLength) - for i, val := range mix { - binary.LittleEndian.PutUint32(digest[i*4:], val) - } - return digest, crypto.Keccak256(append(seed, digest...)) -} - -// hashimotoLight aggregates data from the full dataset (using only a small -// in-memory cache) in order to produce our final value for a particular header -// hash and nonce. -func hashimotoLight(size uint64, cache []uint32, hash []byte, nonce uint64) ([]byte, []byte) { - keccak512 := crypto.Keccak512Hasher() - - lookup := func(index uint32) []uint32 { - rawData := generateDatasetItem(cache, index, keccak512) - - data := make([]uint32, len(rawData)/4) - for i := 0; i < len(data); i++ { - data[i] = binary.LittleEndian.Uint32(rawData[i*4:]) + // If we have the new cache pre-generated, use that, otherwise create a new one + if ethash.future != nil && ethash.future.epoch == epoch { + log.Debug("Using pre-generated cache", "epoch", epoch) + current, ethash.future = ethash.future, nil + } else { + log.Debug("Generating new ethash cache", "epoch", epoch) + current = &cache{epoch: epoch} + } + ethash.caches[epoch] = current + + // If we just used up the future cache, or need a refresh, regenerate + if ethash.future == nil || ethash.future.epoch <= epoch { + log.Debug("Pre-generating cache for the future", "epoch", epoch+1) + future = &cache{epoch: epoch + 1} + ethash.future = future } - return data } - return hashimoto(hash, nonce, size, lookup) + current.used = time.Now() + ethash.lock.Unlock() + + // Wait for generation finish, bump the timestamp and finalize the cache + current.once.Do(func() { + current.generate(ethash.tester) + }) + current.lock.Lock() + current.used = time.Now() + current.lock.Unlock() + + // If we exhusted the future cache, now's a goot time to regenerate it + if future != nil { + go future.generate(ethash.tester) + } + return current.cache } -// hashimotoFull aggregates data from the full dataset (using the full in-memory -// dataset) in order to produce our final value for a particular header hash and -// nonce. -func hashimotoFull(size uint64, dataset []uint32, hash []byte, nonce uint64) ([]byte, []byte) { - lookup := func(index uint32) []uint32 { - offset := index * hashWords - return dataset[offset : offset+hashWords] - } - return hashimoto(hash, nonce, size, lookup) +// Search implements PoW, attempting to find a nonce that satisfies the block's +// difficulty requirements. +func (ethash *Ethash) Search(block Block, stop <-chan struct{}) (uint64, []byte) { + return 0, nil } -// datasetSizes is a lookup table for the ethash dataset size for the first 2048 -// epochs (i.e. 61440000 blocks). -var datasetSizes = []uint64{ - 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17221811072, 17230198912, 17238588032, 17246976896, 17255360384, - 17263754624, 17272143232, 17280530048, 17288918912, 17297309312, - 17305696384, 17314085504, 17322475136, 17330863744, 17339252096, - 17347640192, 17356026496, 17364413824, 17372796544, 17381190016, - 17389583488, 17397972608, 17406360704, 17414748544, 17423135872, - 17431527296, 17439915904, 17448303232, 17456691584, 17465081728, - 17473468288, 17481857408, 17490247552, 17498635904, 17507022464, - 17515409024, 17523801728, 17532189824, 17540577664, 17548966016, - 17557353344, 17565741184, 17574131584, 17582519168, 17590907008, - 17599296128, 17607687808, 17616076672, 17624455808, 17632852352, - 17641238656, 17649630848, 17658018944, 17666403968, 17674794112, - 17683178368, 17691573376, 17699962496, 17708350592, 17716739968, - 17725126528, 17733517184, 17741898112, 17750293888, 17758673024, - 17767070336, 17775458432, 17783848832, 17792236928, 17800625536, - 17809012352, 17817402752, 17825785984, 17834178944, 17842563968, - 17850955648, 17859344512, 17867732864, 17876119424, 17884511872, - 17892900224, 17901287296, 17909677696, 17918058112, 17926451072, - 17934843776, 17943230848, 17951609216, 17960008576, 17968397696, - 17976784256, 17985175424, 17993564032, 18001952128, 18010339712, - 18018728576, 18027116672, 18035503232, 18043894144, 18052283264, - 18060672128, 18069056384, 18077449856, 18085837184, 18094225792, - 18102613376, 18111004544, 18119388544, 18127781248, 18136170368, - 18144558976, 18152947328, 18161336192, 18169724288, 18178108544, - 18186498944, 18194886784, 18203275648, 18211666048, 18220048768, - 18228444544, 18236833408, 18245220736} +// Hashrate implements PoW, returning the measured rate of the search invocations +// per second over the last minute. +func (ethash *Ethash) Hashrate() float64 { + return ethash.hashrate.Rate1() +} -// cacheSizes is a lookup table for the ethash verification cache size for the -// first 2048 epochs (i.e. 61440000 blocks). -var cacheSizes = []uint64{ - 16776896, 16907456, 17039296, 17170112, 17301056, 17432512, 17563072, - 17693888, 17824192, 17955904, 18087488, 18218176, 18349504, 18481088, - 18611392, 18742336, 18874304, 19004224, 19135936, 19267264, 19398208, - 19529408, 19660096, 19791424, 19922752, 20053952, 20184896, 20315968, - 20446912, 20576576, 20709184, 20840384, 20971072, 21102272, 21233216, - 21364544, 21494848, 21626816, 21757376, 21887552, 22019392, 22151104, - 22281536, 22412224, 22543936, 22675264, 22806464, 22935872, 23068096, - 23198272, 23330752, 23459008, 23592512, 23723968, 23854912, 23986112, - 24116672, 24247616, 24378688, 24509504, 24640832, 24772544, 24903488, - 25034432, 25165376, 25296704, 25427392, 25558592, 25690048, 25820096, - 25951936, 26081728, 26214208, 26345024, 26476096, 26606656, 26737472, - 26869184, 26998208, 27131584, 27262528, 27393728, 27523904, 27655744, - 27786688, 27917888, 28049344, 28179904, 28311488, 28441792, 28573504, - 28700864, 28835648, 28966208, 29096768, 29228608, 29359808, 29490752, - 29621824, 29752256, 29882816, 30014912, 30144448, 30273728, 30406976, - 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225181504, 225312704, 225443776, 225574592, 225704768, 225834176, - 225966784, 226097216, 226229824, 226360384, 226491712, 226623424, - 226754368, 226885312, 227015104, 227147456, 227278528, 227409472, - 227539904, 227669696, 227802944, 227932352, 228065216, 228196288, - 228326464, 228457792, 228588736, 228720064, 228850112, 228981056, - 229113152, 229243328, 229375936, 229505344, 229636928, 229769152, - 229894976, 230030272, 230162368, 230292416, 230424512, 230553152, - 230684864, 230816704, 230948416, 231079616, 231210944, 231342016, - 231472448, 231603776, 231733952, 231866176, 231996736, 232127296, - 232259392, 232388672, 232521664, 232652608, 232782272, 232914496, - 233043904, 233175616, 233306816, 233438528, 233569984, 233699776, - 233830592, 233962688, 234092224, 234221888, 234353984, 234485312, - 234618304, 234749888, 234880832, 235011776, 235142464, 235274048, - 235403456, 235535936, 235667392, 235797568, 235928768, 236057152, - 236190272, 236322752, 236453312, 236583616, 236715712, 236846528, - 236976448, 237108544, 237239104, 237371072, 237501632, 237630784, - 237764416, 237895232, 238026688, 238157632, 238286912, 238419392, - 238548032, 238681024, 238812608, 238941632, 239075008, 239206336, - 239335232, 239466944, 239599168, 239730496, 239861312, 239992384, - 240122816, 240254656, 240385856, 240516928, 240647872, 240779072, - 240909632, 241040704, 241171904, 241302848, 241433408, 241565248, - 241696192, 241825984, 241958848, 242088256, 242220224, 242352064, - 242481856, 242611648, 242744896, 242876224, 243005632, 243138496, - 243268672, 243400384, 243531712, 243662656, 243793856, 243924544, - 244054592, 244187072, 244316608, 244448704, 244580032, 244710976, - 244841536, 244972864, 245104448, 245233984, 245365312, 245497792, - 245628736, 245759936, 245889856, 246021056, 246152512, 246284224, - 246415168, 246545344, 246675904, 246808384, 246939584, 247070144, - 247199552, 247331648, 247463872, 247593536, 247726016, 247857088, - 247987648, 248116928, 248249536, 248380736, 248512064, 248643008, - 248773312, 248901056, 249036608, 249167552, 249298624, 249429184, - 249560512, 249692096, 249822784, 249954112, 250085312, 250215488, - 250345792, 250478528, 250608704, 250739264, 250870976, 251002816, - 251133632, 251263552, 251395136, 251523904, 251657792, 251789248, - 251919424, 252051392, 252182464, 252313408, 252444224, 252575552, - 252706624, 252836032, 252968512, 253099712, 253227584, 253361728, - 253493056, 253623488, 253754432, 253885504, 254017216, 254148032, - 254279488, 254410432, 254541376, 254672576, 254803264, 254933824, - 255065792, 255196736, 255326528, 255458752, 255589952, 255721408, - 255851072, 255983296, 256114624, 256244416, 256374208, 256507712, - 256636096, 256768832, 256900544, 257031616, 257162176, 257294272, - 257424448, 257555776, 257686976, 257818432, 257949632, 258079552, - 258211136, 258342464, 258473408, 258603712, 258734656, 258867008, - 258996544, 259127744, 259260224, 259391296, 259522112, 259651904, - 259784384, 259915328, 260045888, 260175424, 260308544, 260438336, - 260570944, 260700992, 260832448, 260963776, 261092672, 261226304, - 261356864, 261487936, 261619648, 261750592, 261879872, 262011968, - 262143424, 262274752, 262404416, 262537024, 262667968, 262799296, - 262928704, 263061184, 263191744, 263322944, 263454656, 263585216, - 263716672, 263847872, 263978944, 264108608, 264241088, 264371648, - 264501184, 264632768, 264764096, 264895936, 265024576, 265158464, - 265287488, 265418432, 265550528, 265681216, 265813312, 265943488, - 266075968, 266206144, 266337728, 266468032, 266600384, 266731072, - 266862272, 266993344, 267124288, 267255616, 267386432, 267516992, - 267648704, 267777728, 267910592, 268040512, 268172096, 268302784, - 268435264, 268566208, 268696256, 268828096, 268959296, 269090368, - 269221312, 269352256, 269482688, 269614784, 269745856, 269876416, - 270007616, 270139328, 270270272, 270401216, 270531904, 270663616, - 270791744, 270924736, 271056832, 271186112, 271317184, 271449536, - 271580992, 271711936, 271843136, 271973056, 272105408, 272236352, - 272367296, 272498368, 272629568, 272759488, 272891456, 273022784, - 273153856, 273284672, 273415616, 273547072, 273677632, 273808448, - 273937088, 274071488, 274200896, 274332992, 274463296, 274595392, - 274726208, 274857536, 274988992, 275118656, 275250496, 275382208, - 275513024, 275643968, 275775296, 275906368, 276037184, 276167872, - 276297664, 276429376, 276560576, 276692672, 276822976, 276955072, - 277085632, 277216832, 277347008, 277478848, 277609664, 277740992, - 277868608, 278002624, 278134336, 278265536, 278395328, 278526784, - 278657728, 278789824, 278921152, 279052096, 279182912, 279313088, - 279443776, 279576256, 279706048, 279838528, 279969728, 280099648, - 280230976, 280361408, 280493632, 280622528, 280755392, 280887104, - 281018176, 281147968, 281278912, 281411392, 281542592, 281673152, - 281803712, 281935552, 282066496, 282197312, 282329024, 282458816, - 282590272, 282720832, 282853184, 282983744, 283115072, 283246144, - 283377344, 283508416, 283639744, 283770304, 283901504, 284032576, - 284163136, 284294848, 284426176, 284556992, 284687296, 284819264, - 284950208, 285081536} +// EthashSeedHash is the seed to use for generating a vrification cache and the +// mining dataset. +func EthashSeedHash(block uint64) []byte { + return seedHash(block) +} diff --git a/pow/ethash_algo.go b/pow/ethash_algo.go new file mode 100644 index 0000000000..fcd6af9952 --- /dev/null +++ b/pow/ethash_algo.go @@ -0,0 +1,1071 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package pow + +import ( + "encoding/binary" + "io" + "math/big" + "runtime" + "sync" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/log" +) + +const ( + datasetInitBytes = 1 << 30 // Bytes in dataset at genesis + datasetGrowthBytes = 1 << 23 // Dataset growth per epoch + cacheInitBytes = 1 << 24 // Bytes in cache at genesis + cacheGrowthBytes = 1 << 17 // Cache growth per epoch + epochLength = 30000 // Blocks per epoch + mixBytes = 128 // Width of mix + hashBytes = 64 // Hash length in bytes + hashWords = 16 // Number of 32 bit ints in a hash + datasetParents = 256 // Number of parents of each dataset element + cacheRounds = 3 // Number of rounds in cache production + loopAccesses = 64 // Number of accesses in hashimoto loop +) + +var ( + // Metadata fields to be compatible with the C++ ethash + ethashRevision = 23 // Data structure version + ethashMagic = hexutil.MustDecode("0xfee1deadbaddcafe") // Dataset dump magic number +) + +// cacheSize calculates and returns the size of the ethash verification cache that +// belongs to a certain block number. The cache size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func cacheSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(cacheSizes) { + return cacheSizes[epoch] + } + // No known cache size, calculate manually (sanity branch only) + size := uint64(cacheInitBytes + cacheGrowthBytes*epoch - hashBytes) + for !new(big.Int).SetUint64(size / hashBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 + size -= 2 * hashBytes + } + return size +} + +// datasetSize calculates and returns the size of the ethash mining dataset that +// belongs to a certain block number. The dataset size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func datasetSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(datasetSizes) { + return datasetSizes[epoch] + } + // No known dataset size, calculate manually (sanity branch only) + size := uint64(datasetInitBytes + datasetGrowthBytes*epoch - mixBytes) + for !new(big.Int).SetUint64(size / mixBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 + size -= 2 * mixBytes + } + return size +} + +// seedHash is the seed to use for generating a verification cache and the mining +// dataset. +func seedHash(block uint64) []byte { + seed := make([]byte, 32) + if block < epochLength { + return seed + } + keccak256 := crypto.Keccak256Hasher() + for i := 0; i < int(block/epochLength); i++ { + seed = keccak256(seed) + } + return seed +} + +// generateCache creates a verification cache of a given size for an input seed. +// The cache production process involves first sequentially filling up 32 MB of +// memory, then performing two passes of Sergio Demian Lerner's RandMemoHash +// algorithm from Strict Memory Hard Hashing Functions (2014). The output is a +// set of 524288 64-byte values. +func generateCache(size uint64, seed []byte) []byte { + // Print some debug logs to allow analysis on low end devices + logger := log.New("size", size, "seed", hexutil.Bytes(seed)) + logger.Debug("Generating ethash cache") + + defer func(start time.Time) { + logger.Debug("Generated ethash cache", "elapsed", common.PrettyDuration(time.Since(start))) + }(time.Now()) + + // Calculate the number of thoretical rows (we'll store in one buffer nonetheless) + rows := int(size) / hashBytes + + // Create a hasher to reuse between invocations + keccak512 := crypto.Keccak512Hasher() + + // Sequentially produce the initial dataset + cache := make([]byte, size) + copy(cache, keccak512(seed)) + for offset := uint64(hashBytes); offset < size; offset += hashBytes { + copy(cache[offset:], keccak512(cache[offset-hashBytes:offset])) + } + // Use a low-round version of randmemohash + temp := make([]byte, hashBytes) + + for i := 0; i < cacheRounds; i++ { + for j := 0; j < rows; j++ { + var ( + srcOff = ((j - 1 + rows) % rows) * hashBytes + dstOff = j * hashBytes + xorOff = (binary.LittleEndian.Uint32(cache[dstOff:]) % uint32(rows)) * hashBytes + ) + xorBytes(temp, cache[srcOff:srcOff+hashBytes], cache[xorOff:xorOff+hashBytes]) + copy(cache[dstOff:], keccak512(temp)) + } + } + return cache +} + +// prepare converts an ethash cache or dataset from a byte stream into the internal +// int representation. All ethash methods work with ints to avoid constant byte to +// int conversions as well as to handle both little and big endian systems. +func prepare(size uint64, r io.Reader) []uint32 { + ints := make([]uint32, size/4) + + buffer := make([]byte, 4) + for i := 0; i < len(ints); i++ { + io.ReadFull(r, buffer) + ints[i] = binary.LittleEndian.Uint32(buffer) + } + return ints +} + +// fnv is an algorithm inspired by the FNV hash, which in some cases is used as +// a non-associative substitute for XOR. Note that we multiply the prime with +// the full 32-bit input, in contrast with the FNV-1 spec which multiplies the +// prime with one byte (octet) in turn. +func fnv(a, b uint32) uint32 { + return a*0x01000193 ^ b +} + +// fnvHash mixes in data into mix using the ethash fnv method. +func fnvHash(mix []uint32, data []uint32) { + for i := 0; i < len(mix); i++ { + mix[i] = mix[i]*0x01000193 ^ data[i] + } +} + +// generateDatasetItem combines data from 256 pseudorandomly selected cache nodes, +// and hashes that to compute a single dataset node. +func generateDatasetItem(cache []uint32, index uint32, keccak512 crypto.Hasher) []byte { + // Calculate the number of thoretical rows (we use one buffer nonetheless) + rows := uint32(len(cache) / hashWords) + + // Initialize the mix + mix := make([]byte, hashBytes) + + binary.LittleEndian.PutUint32(mix, cache[(index%rows)*hashWords]^index) + for i := 1; i < hashWords; i++ { + binary.LittleEndian.PutUint32(mix[i*4:], cache[(index%rows)*hashWords+uint32(i)]) + } + mix = keccak512(mix) + + // Convert the mix to uint32s to avoid constant bit shifting + intMix := make([]uint32, hashWords) + for i := 0; i < len(intMix); i++ { + intMix[i] = binary.LittleEndian.Uint32(mix[i*4:]) + } + // fnv it with a lot of random cache nodes based on index + for i := uint32(0); i < datasetParents; i++ { + parent := fnv(index^i, intMix[i%16]) % rows + fnvHash(intMix, cache[parent*hashWords:]) + } + // Flatten the uint32 mix into a binary one and return + for i, val := range intMix { + binary.LittleEndian.PutUint32(mix[i*4:], val) + } + return keccak512(mix) +} + +// generateDataset generates the entire ethash dataset for mining. +func generateDataset(size uint64, cache []uint32) []byte { + // Print some debug logs to allow analysis on low end devices + logger := log.New("size", size) + logger.Debug("Generating ethash dataset") + + defer func(start time.Time) { + logger.Debug("Generated ethash dataset", "elapsed", common.PrettyDuration(time.Since(start))) + }(time.Now()) + + // Generate the dataset on many goroutines since it takes a while + dataset := make([]byte, size) + threads := runtime.NumCPU() + + var pend sync.WaitGroup + pend.Add(threads) + + var progress uint32 + for i := 0; i < threads; i++ { + go func(id int) { + defer pend.Done() + + // Create a hasher to reuse between invocations + keccak512 := crypto.Keccak512Hasher() + + // Calculate the data segment this thread should generate + batch := uint32(size / hashBytes / uint64(threads)) + start := uint32(id) * batch + limit := start + batch + if limit > uint32(size/hashBytes) { + limit = uint32(size / hashBytes) + } + // Calculate the dataset segment + percent := uint32(size / hashBytes / 100) + for index := start; index < limit; index++ { + copy(dataset[index*hashBytes:], generateDatasetItem(cache, index, keccak512)) + + if status := atomic.AddUint32(&progress, 1); status%percent == 0 { + logger.Info("Generating DAG in progress", "percentage", uint64(status*100)/(size/hashBytes)) + } + } + }(i) + } + // Wait for all the generators to finish and return + pend.Wait() + + return dataset +} + +// hashimoto aggregates data from the full dataset in order to produce our final +// value for a particular header hash and nonce. +func hashimoto(hash []byte, nonce uint64, size uint64, lookup func(index uint32) []uint32) ([]byte, []byte) { + // Calculate the number of thoretical rows (we use one buffer nonetheless) + rows := uint32(size / mixBytes) + + // Combine header+nonce into a 64 byte seed + seed := make([]byte, 40) + copy(seed, hash) + binary.LittleEndian.PutUint64(seed[32:], nonce) + + seed = crypto.Keccak512(seed) + seedHead := binary.LittleEndian.Uint32(seed) + + // Start the mix with replicated seed + mix := make([]uint32, mixBytes/4) + for i := 0; i < len(mix); i++ { + mix[i] = binary.LittleEndian.Uint32(seed[i%16*4:]) + } + // Mix in random dataset nodes + temp := make([]uint32, len(mix)) + + for i := 0; i < loopAccesses; i++ { + parent := fnv(uint32(i)^seedHead, mix[i%len(mix)]) % rows + for j := uint32(0); j < mixBytes/hashBytes; j++ { + copy(temp[j*hashWords:], lookup(2*parent+j)) + } + fnvHash(mix, temp) + } + // Compress mix + for i := 0; i < len(mix); i += 4 { + mix[i/4] = fnv(fnv(fnv(mix[i], mix[i+1]), mix[i+2]), mix[i+3]) + } + mix = mix[:len(mix)/4] + + digest := make([]byte, common.HashLength) + for i, val := range mix { + binary.LittleEndian.PutUint32(digest[i*4:], val) + } + return digest, crypto.Keccak256(append(seed, digest...)) +} + +// hashimotoLight aggregates data from the full dataset (using only a small +// in-memory cache) in order to produce our final value for a particular header +// hash and nonce. +func hashimotoLight(size uint64, cache []uint32, hash []byte, nonce uint64) ([]byte, []byte) { + keccak512 := crypto.Keccak512Hasher() + + lookup := func(index uint32) []uint32 { + rawData := generateDatasetItem(cache, index, keccak512) + + data := make([]uint32, len(rawData)/4) + for i := 0; i < len(data); i++ { + data[i] = binary.LittleEndian.Uint32(rawData[i*4:]) + } + return data + } + return hashimoto(hash, nonce, size, lookup) +} + +// hashimotoFull aggregates data from the full dataset (using the full in-memory +// dataset) in order to produce our final value for a particular header hash and +// nonce. +func hashimotoFull(size uint64, dataset []uint32, hash []byte, nonce uint64) ([]byte, []byte) { + lookup := func(index uint32) []uint32 { + offset := index * hashWords + return dataset[offset : offset+hashWords] + } + return hashimoto(hash, nonce, size, lookup) +} + +// datasetSizes is a lookup table for the ethash dataset size for the first 2048 +// epochs (i.e. 61440000 blocks). +var datasetSizes = []uint64{ + 1073739904, 1082130304, 1090514816, 1098906752, 1107293056, + 1115684224, 1124070016, 1132461952, 1140849536, 1149232768, + 1157627776, 1166013824, 1174404736, 1182786944, 1191180416, + 1199568512, 1207958912, 1216345216, 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18027116672, 18035503232, 18043894144, 18052283264, + 18060672128, 18069056384, 18077449856, 18085837184, 18094225792, + 18102613376, 18111004544, 18119388544, 18127781248, 18136170368, + 18144558976, 18152947328, 18161336192, 18169724288, 18178108544, + 18186498944, 18194886784, 18203275648, 18211666048, 18220048768, + 18228444544, 18236833408, 18245220736} + +// cacheSizes is a lookup table for the ethash verification cache size for the +// first 2048 epochs (i.e. 61440000 blocks). +var cacheSizes = []uint64{ + 16776896, 16907456, 17039296, 17170112, 17301056, 17432512, 17563072, + 17693888, 17824192, 17955904, 18087488, 18218176, 18349504, 18481088, + 18611392, 18742336, 18874304, 19004224, 19135936, 19267264, 19398208, + 19529408, 19660096, 19791424, 19922752, 20053952, 20184896, 20315968, + 20446912, 20576576, 20709184, 20840384, 20971072, 21102272, 21233216, + 21364544, 21494848, 21626816, 21757376, 21887552, 22019392, 22151104, + 22281536, 22412224, 22543936, 22675264, 22806464, 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283770304, 283901504, 284032576, + 284163136, 284294848, 284426176, 284556992, 284687296, 284819264, + 284950208, 285081536} diff --git a/pow/ethash_test.go b/pow/ethash_algo_test.go similarity index 99% rename from pow/ethash_test.go rename to pow/ethash_algo_test.go index 43d899e219..253ddfa72e 100644 --- a/pow/ethash_test.go +++ b/pow/ethash_algo_test.go @@ -675,14 +675,14 @@ func TestHashimoto(t *testing.T) { } } -// Becnhmarks the cache generation performance. +// Benchmarks the cache generation performance. func BenchmarkCacheGeneration(b *testing.B) { for i := 0; i < b.N; i++ { generateCache(cacheSize(1), make([]byte, 32)) } } -// Becnhmarks the dataset (small) generation performance. +// Benchmarks the dataset (small) generation performance. func BenchmarkSmallDatasetGeneration(b *testing.B) { rawCache := generateCache(65536, make([]byte, 32)) cache := prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) @@ -693,7 +693,7 @@ func BenchmarkSmallDatasetGeneration(b *testing.B) { } } -// Becnhmarks the light verification performace. +// Benchmarks the light verification performance. func BenchmarkHashimotoLight(b *testing.B) { var ( rawCache = generateCache(cacheSize(1), make([]byte, 32)) @@ -706,7 +706,7 @@ func BenchmarkHashimotoLight(b *testing.B) { } } -// Becnhmarks the full (small) verification performace. +// Benchmarks the full (small) verification performance. func BenchmarkHashimotoFullSmall(b *testing.B) { var ( rawCache = generateCache(65536, make([]byte, 32)) diff --git a/pow/pow.go b/pow/pow.go index 592d964751..4849adb3ea 100644 --- a/pow/pow.go +++ b/pow/pow.go @@ -16,9 +16,43 @@ package pow -type PoW interface { - Search(block Block, stop <-chan struct{}, index int) (uint64, []byte) - Verify(block Block) bool - GetHashrate() int64 - Turbo(bool) +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/types" +) + +type Block interface { + Difficulty() *big.Int + HashNoNonce() common.Hash + Nonce() uint64 + MixDigest() common.Hash + NumberU64() uint64 } + +type ChainManager interface { + GetBlockByNumber(uint64) *types.Block + CurrentBlock() *types.Block +} + +type PoW interface { + Verify(block Block) error + Search(block Block, stop <-chan struct{}) (uint64, []byte) + Hashrate() float64 +} + +// FakePow is a non-validating proof of work implementation. +// It returns true from Verify for any block. +type FakePow struct{} + +// Verify implements PoW, returning a success for an input. +func (pow FakePow) Verify(block Block) error { return nil } + +// Search implements PoW, returning the nonce 0 for any call. +func (pow FakePow) Search(block Block, stop <-chan struct{}) (uint64, []byte) { + return 0, nil +} + +// Hashrate implements PoW, returning 0. +func (pow FakePow) Hashrate() float64 { return 0 } diff --git a/tests/block_test_util.go b/tests/block_test_util.go index 06792cac17..456a4ccb86 100644 --- a/tests/block_test_util.go +++ b/tests/block_test_util.go @@ -26,7 +26,6 @@ import ( "strconv" "strings" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" @@ -36,6 +35,7 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" ) @@ -172,7 +172,7 @@ func runBlockTest(homesteadBlock, daoForkBlock, gasPriceFork *big.Int, test *Blo core.WriteHeadBlockHash(db, test.Genesis.Hash()) evmux := new(event.TypeMux) config := ¶ms.ChainConfig{HomesteadBlock: homesteadBlock, DAOForkBlock: daoForkBlock, DAOForkSupport: true, EIP150Block: gasPriceFork} - chain, err := core.NewBlockChain(db, config, ethash.NewShared(), evmux, vm.Config{}) + chain, err := core.NewBlockChain(db, config, pow.NewSharedEthash(), evmux, vm.Config{}) if err != nil { return err } From 023670f6bafcfed28c01857da215217a5dadfaa1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Mon, 6 Mar 2017 11:37:32 +0200 Subject: [PATCH 11/57] cmd, eth, les, node, pow: disk caching and progress reports --- cmd/geth/main.go | 5 ++ cmd/geth/usage.go | 10 ++++ cmd/utils/flags.go | 61 ++++++++++++++++++++++- eth/backend.go | 24 ++++----- les/backend.go | 7 +-- node/service.go | 7 +++ pow/ethash.go | 121 +++++++++++++++++++++++++++++++++++---------- pow/ethash_algo.go | 36 +++++++++----- 8 files changed, 216 insertions(+), 55 deletions(-) diff --git a/cmd/geth/main.go b/cmd/geth/main.go index 1f6f2bb295..bf5e81d45e 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -91,6 +91,11 @@ func init() { utils.BootnodesFlag, utils.DataDirFlag, utils.KeyStoreDirFlag, + utils.EthashCacheDirFlag, + utils.EthashCachesInMemoryFlag, + utils.EthashCachesOnDiskFlag, + utils.EthashDatasetDirFlag, + utils.EthashDatasetsOnDiskFlag, utils.FastSyncFlag, utils.LightModeFlag, utils.LightServFlag, diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go index 9349857e91..34910daa55 100644 --- a/cmd/geth/usage.go +++ b/cmd/geth/usage.go @@ -77,6 +77,16 @@ var AppHelpFlagGroups = []flagGroup{ utils.LightKDFFlag, }, }, + { + Name: "ETHASH", + Flags: []cli.Flag{ + utils.EthashCacheDirFlag, + utils.EthashCachesInMemoryFlag, + utils.EthashCachesOnDiskFlag, + utils.EthashDatasetDirFlag, + utils.EthashDatasetsOnDiskFlag, + }, + }, { Name: "PERFORMANCE TUNING", Flags: []cli.Flag{ diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 00599e82a4..b92be84640 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -23,6 +23,7 @@ import ( "io/ioutil" "math/big" "os" + "os/user" "path/filepath" "runtime" "strconv" @@ -113,6 +114,29 @@ var ( Name: "keystore", Usage: "Directory for the keystore (default = inside the datadir)", } + EthashCacheDirFlag = DirectoryFlag{ + Name: "ethash.cachedir", + Usage: "Directory to store the ethash verification caches (default = inside the datadir)", + } + EthashCachesInMemoryFlag = cli.IntFlag{ + Name: "ethash.cachesinmem", + Usage: "Number of recent ethash caches to keep in memory (16MB each)", + Value: 2, + } + EthashCachesOnDiskFlag = cli.IntFlag{ + Name: "ethash.cachesondisk", + Usage: "Number of recent ethash caches to keep on disk (16MB each)", + Value: 3, + } + EthashDatasetDirFlag = DirectoryFlag{ + Name: "ethash.dagdir", + Usage: "Directory to store the ethash mining DAGs (default = inside home folder)", + } + EthashDatasetsOnDiskFlag = cli.IntFlag{ + Name: "ethash.dagsondisk", + Usage: "Number of ethash mining DAGs to keep on disk (1+GB each)", + Value: 2, + } NetworkIdFlag = cli.IntFlag{ Name: "networkid", Usage: "Network identifier (integer, 1=Frontier, 2=Morden (disused), 3=Ropsten)", @@ -431,6 +455,36 @@ func MakeDataDir(ctx *cli.Context) string { return "" } +// MakeEthashCacheDir returns the directory to use for storing the ethash cache +// dumps. +func MakeEthashCacheDir(ctx *cli.Context) string { + if ctx.GlobalIsSet(EthashCacheDirFlag.Name) && ctx.GlobalString(EthashCacheDirFlag.Name) == "" { + return "" + } + if !ctx.GlobalIsSet(EthashCacheDirFlag.Name) { + return "ethash" + } + return ctx.GlobalString(EthashCacheDirFlag.Name) +} + +// MakeEthashDatasetDir returns the directory to use for storing the full ethash +// dataset dumps. +func MakeEthashDatasetDir(ctx *cli.Context) string { + if !ctx.GlobalIsSet(EthashDatasetDirFlag.Name) { + home := os.Getenv("HOME") + if home == "" { + if user, err := user.Current(); err == nil { + home = user.HomeDir + } + } + if runtime.GOOS == "windows" { + return filepath.Join(home, "AppData", "Ethash") + } + return filepath.Join(home, ".ethash") + } + return ctx.GlobalString(EthashDatasetDirFlag.Name) +} + // MakeIPCPath creates an IPC path configuration from the set command line flags, // returning an empty string if IPC was explicitly disabled, or the set path. func MakeIPCPath(ctx *cli.Context) string { @@ -751,6 +805,11 @@ func RegisterEthService(ctx *cli.Context, stack *node.Node, extra []byte) { GpobaseStepUp: ctx.GlobalInt(GpobaseStepUpFlag.Name), GpobaseCorrectionFactor: ctx.GlobalInt(GpobaseCorrectionFactorFlag.Name), SolcPath: ctx.GlobalString(SolcPathFlag.Name), + EthashCacheDir: MakeEthashCacheDir(ctx), + EthashCachesInMem: ctx.GlobalInt(EthashCachesInMemoryFlag.Name), + EthashCachesOnDisk: ctx.GlobalInt(EthashCachesOnDiskFlag.Name), + EthashDatasetDir: MakeEthashDatasetDir(ctx), + EthashDatasetsOnDisk: ctx.GlobalInt(EthashDatasetsOnDiskFlag.Name), AutoDAG: ctx.GlobalBool(AutoDAGFlag.Name) || ctx.GlobalBool(MiningEnabledFlag.Name), EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name), } @@ -923,7 +982,7 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai seal := pow.PoW(pow.FakePow{}) if !ctx.GlobalBool(FakePoWFlag.Name) { - seal = pow.NewFullEthash("", "") + seal = pow.NewFullEthash("", 1, 0, "", 0) } chain, err = core.NewBlockChain(chainDb, chainConfig, seal, new(event.TypeMux), vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}) if err != nil { diff --git a/eth/backend.go b/eth/backend.go index 024520b130..d49251d75c 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -84,6 +84,12 @@ type Config struct { PowShared bool ExtraData []byte + EthashCacheDir string + EthashCachesInMem int + EthashCachesOnDisk int + EthashDatasetDir string + EthashDatasetsOnDisk int + Etherbase common.Address GasPrice *big.Int MinerThreads int @@ -157,16 +163,11 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { if err := SetupGenesisBlock(&chainDb, config); err != nil { return nil, err } - pow, err := CreatePoW(config) - if err != nil { - return nil, err - } - eth := &Ethereum{ chainDb: chainDb, eventMux: ctx.EventMux, accountManager: ctx.AccountManager, - pow: pow, + pow: CreatePoW(ctx, config), shutdownChan: make(chan bool), stopDbUpgrade: stopDbUpgrade, netVersionId: config.NetworkId, @@ -284,19 +285,20 @@ func SetupGenesisBlock(chainDb *ethdb.Database, config *Config) error { } // CreatePoW creates the required type of PoW instance for an Ethereum service -func CreatePoW(config *Config) (pow.PoW, error) { +func CreatePoW(ctx *node.ServiceContext, config *Config) pow.PoW { switch { case config.PowFake: log.Warn("Ethash used in fake mode") - return pow.FakePow{}, nil + return pow.FakePow{} case config.PowTest: log.Warn("Ethash used in test mode") - return pow.NewTestEthash(), nil + return pow.NewTestEthash() case config.PowShared: log.Warn("Ethash used in shared mode") - return pow.NewSharedEthash(), nil + return pow.NewSharedEthash() default: - return pow.NewFullEthash("", ""), nil + return pow.NewFullEthash(ctx.ResolvePath(config.EthashCacheDir), config.EthashCachesInMem, config.EthashCachesOnDisk, + config.EthashDatasetDir, config.EthashDatasetsOnDisk) } } diff --git a/les/backend.go b/les/backend.go index e96fc9df0b..404728c0e1 100644 --- a/les/backend.go +++ b/les/backend.go @@ -77,11 +77,6 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { if err := eth.SetupGenesisBlock(&chainDb, config); err != nil { return nil, err } - pow, err := eth.CreatePoW(config) - if err != nil { - return nil, err - } - odr := NewLesOdr(chainDb) relay := NewLesTxRelay() eth := &LightEthereum{ @@ -90,7 +85,7 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { chainDb: chainDb, eventMux: ctx.EventMux, accountManager: ctx.AccountManager, - pow: pow, + pow: eth.CreatePoW(ctx, config), shutdownChan: make(chan bool), netVersionId: config.NetworkId, solcPath: config.SolcPath, diff --git a/node/service.go b/node/service.go index 1cd1fe808e..5e1eb0e645 100644 --- a/node/service.go +++ b/node/service.go @@ -46,6 +46,13 @@ func (ctx *ServiceContext) OpenDatabase(name string, cache int, handles int) (et return ethdb.NewLDBDatabase(ctx.config.resolvePath(name), cache, handles) } +// ResolvePath resolves a user path into the data directory if that was relative +// and if the user actually uses persistent storage. It will return an empty string +// for emphemeral storage and the user's own input for absolute paths. +func (ctx *ServiceContext) ResolvePath(path string) string { + return ctx.config.resolvePath(path) +} + // Service retrieves a currently running service registered of a specific type. func (ctx *ServiceContext) Service(service interface{}) error { element := reflect.ValueOf(service).Elem() diff --git a/pow/ethash.go b/pow/ethash.go index b22c65e0bd..602f9324f8 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -17,12 +17,19 @@ package pow import ( + "bufio" "bytes" "errors" + "fmt" + "io/ioutil" "math/big" + "os" + "path/filepath" "sync" "time" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/log" metrics "github.com/rcrowley/go-metrics" ) @@ -36,6 +43,15 @@ var ( var ( // maxUint256 is a big integer representing 2^256-1 maxUint256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0)) + + // sharedEthash is a full instance that can be shared between multiple users. + sharedEthash = NewFullEthash("", 3, 0, "", 0) + + // algorithmRevision is the data structure version used for file naming. + algorithmRevision = 23 + + // dumpMagic is a dataset dump header to sanity check a data dump. + dumpMagic = hexutil.MustDecode("0xfee1deadbaddcafe") ) // cache wraps an ethash cache with some metadata to allow easier concurrent use. @@ -48,21 +64,65 @@ type cache struct { } // generate ensures that the cache content is generates. -func (c *cache) generate(test bool) { +func (c *cache) generate(dir string, limit int, test bool) { c.once.Do(func() { - cacheSize := cacheSize(c.epoch*epochLength + 1) + // If we have a testing cache, generate and return if test { - cacheSize = 1024 + rawCache := generateCache(1024, seedHash(c.epoch*epochLength+1)) + c.cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + return + } + // Full cache generation is needed, check cache dir for existing data + size := cacheSize(c.epoch*epochLength + 1) + seed := seedHash(c.epoch*epochLength + 1) + + path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x", algorithmRevision, seed)) + logger := log.New("seed", hexutil.Bytes(seed)) + + if dir != "" { + dump, err := os.Open(path) + if err == nil { + logger.Info("Loading ethash cache from disk") + start := time.Now() + c.cache = prepare(size, bufio.NewReader(dump)) + logger.Info("Loaded ethash cache from disk", "elapsed", common.PrettyDuration(time.Since(start))) + + dump.Close() + return + } + } + // No previous disk cache was available, generate on the fly + rawCache := generateCache(size, seed) + c.cache = prepare(size, bytes.NewReader(rawCache)) + + // If a cache directory is given, attempt to serialize for next time + if dir != "" { + // Store the ethash cache to disk + start := time.Now() + if err := os.MkdirAll(filepath.Dir(path), os.ModePerm); err != nil { + logger.Error("Failed to create ethash cache dir", "err", err) + } else if err := ioutil.WriteFile(path, rawCache, os.ModePerm); err != nil { + logger.Error("Failed to write ethash cache to disk", "err", err) + } else { + logger.Info("Stored ethash cache to disk", "elapsed", common.PrettyDuration(time.Since(start))) + } + // Iterate over all previous instances and delete old ones + for ep := int(c.epoch) - limit; ep >= 0; ep-- { + seed := seedHash(uint64(ep)*epochLength + 1) + path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x", algorithmRevision, seed)) + os.Remove(path) + } } - rawCache := generateCache(cacheSize, seedHash(c.epoch*epochLength+1)) - c.cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) }) } // Ethash is a PoW data struture implementing the ethash algorithm. type Ethash struct { - cachedir string // Data directory to store the verification caches - dagdir string // Data directory to store full mining datasets + cachedir string // Data directory to store the verification caches + cachesinmem int // Number of caches to keep in memory + cachesondisk int // Number of caches to keep on disk + dagdir string // Data directory to store full mining datasets + dagsondisk int // Number of mining datasets to keep on disk caches map[uint64]*cache // In memory caches to avoid regenerating too often future *cache // Pre-generated cache for the estimated future epoch @@ -71,15 +131,27 @@ type Ethash struct { hashrate *metrics.StandardMeter // Meter tracking the average hashrate tester bool // Flag whether to use a smaller test dataset - shared bool // Flag whether to use a global chared dataset } // NewFullEthash creates a full sized ethash PoW scheme. -func NewFullEthash(cachedir, dagdir string) PoW { +func NewFullEthash(cachedir string, cachesinmem, cachesondisk int, dagdir string, dagsondisk int) PoW { + if cachesinmem <= 0 { + log.Warn("One ethash cache must alwast be in memory", "requested", cachesinmem) + cachesinmem = 1 + } + if cachedir != "" && cachesondisk > 0 { + log.Info("Disk storage enabled for ethash caches", "dir", cachedir, "count", cachesondisk) + } + if dagdir != "" && dagsondisk > 0 { + log.Info("Disk storage enabled for ethash DAGs", "dir", dagdir, "count", dagsondisk) + } return &Ethash{ - cachedir: cachedir, - dagdir: dagdir, - caches: make(map[uint64]*cache), + cachedir: cachedir, + cachesinmem: cachesinmem, + cachesondisk: cachesondisk, + dagdir: dagdir, + dagsondisk: dagsondisk, + caches: make(map[uint64]*cache), } } @@ -87,18 +159,16 @@ func NewFullEthash(cachedir, dagdir string) PoW { // purposes. func NewTestEthash() PoW { return &Ethash{ - caches: make(map[uint64]*cache), - tester: true, + cachesinmem: 1, + caches: make(map[uint64]*cache), + tester: true, } } // NewSharedEthash creates a full sized ethash PoW shared between all requesters // running in the same process. func NewSharedEthash() PoW { - return &Ethash{ - caches: make(map[uint64]*cache), - shared: true, - } + return sharedEthash } // Verify implements PoW, checking whether the given block satisfies the PoW @@ -140,7 +210,7 @@ func (ethash *Ethash) cache(block uint64) []uint32 { current, future := ethash.caches[epoch], (*cache)(nil) if current == nil { // No in-memory cache, evict the oldest if the cache limit was reached - for len(ethash.caches) >= 3 { + for len(ethash.caches) >= ethash.cachesinmem { var evict *cache for _, cache := range ethash.caches { if evict == nil || evict.used.After(cache.used) { @@ -149,21 +219,21 @@ func (ethash *Ethash) cache(block uint64) []uint32 { } delete(ethash.caches, evict.epoch) - log.Debug("Evictinged ethash cache", "old", evict.epoch, "used", evict.used) + log.Debug("Evicted ethash cache", "epoch", evict.epoch, "used", evict.used) } // If we have the new cache pre-generated, use that, otherwise create a new one if ethash.future != nil && ethash.future.epoch == epoch { log.Debug("Using pre-generated cache", "epoch", epoch) current, ethash.future = ethash.future, nil } else { - log.Debug("Generating new ethash cache", "epoch", epoch) + log.Debug("Requiring new ethash cache", "epoch", epoch) current = &cache{epoch: epoch} } ethash.caches[epoch] = current // If we just used up the future cache, or need a refresh, regenerate if ethash.future == nil || ethash.future.epoch <= epoch { - log.Debug("Pre-generating cache for the future", "epoch", epoch+1) + log.Debug("Requiring new future ethash cache", "epoch", epoch+1) future = &cache{epoch: epoch + 1} ethash.future = future } @@ -172,16 +242,15 @@ func (ethash *Ethash) cache(block uint64) []uint32 { ethash.lock.Unlock() // Wait for generation finish, bump the timestamp and finalize the cache - current.once.Do(func() { - current.generate(ethash.tester) - }) + current.generate(ethash.cachedir, ethash.cachesondisk, ethash.tester) + current.lock.Lock() current.used = time.Now() current.lock.Unlock() // If we exhusted the future cache, now's a goot time to regenerate it if future != nil { - go future.generate(ethash.tester) + go future.generate(ethash.cachedir, ethash.cachesondisk, ethash.tester) } return current.cache } diff --git a/pow/ethash_algo.go b/pow/ethash_algo.go index fcd6af9952..f6d05880a2 100644 --- a/pow/ethash_algo.go +++ b/pow/ethash_algo.go @@ -45,12 +45,6 @@ const ( loopAccesses = 64 // Number of accesses in hashimoto loop ) -var ( - // Metadata fields to be compatible with the C++ ethash - ethashRevision = 23 // Data structure version - ethashMagic = hexutil.MustDecode("0xfee1deadbaddcafe") // Dataset dump magic number -) - // cacheSize calculates and returns the size of the ethash verification cache that // belongs to a certain block number. The cache size grows linearly, however, we // always take the highest prime below the linearly growing threshold in order to @@ -108,16 +102,33 @@ func seedHash(block uint64) []byte { // set of 524288 64-byte values. func generateCache(size uint64, seed []byte) []byte { // Print some debug logs to allow analysis on low end devices - logger := log.New("size", size, "seed", hexutil.Bytes(seed)) - logger.Debug("Generating ethash cache") + logger := log.New("seed", hexutil.Bytes(seed)) + logger.Debug("Generating ethash verification cache") - defer func(start time.Time) { - logger.Debug("Generated ethash cache", "elapsed", common.PrettyDuration(time.Since(start))) - }(time.Now()) + start := time.Now() + defer func() { + logger.Info("Generated ethash verification cache", "elapsed", common.PrettyDuration(time.Since(start))) + }() // Calculate the number of thoretical rows (we'll store in one buffer nonetheless) rows := int(size) / hashBytes + // Start a monitoring goroutine to report progress on low end devices + var progress uint32 + + done := make(chan struct{}) + defer close(done) + + go func() { + for { + select { + case <-done: + return + case <-time.After(3 * time.Second): + logger.Info("Generating ethash verification cache", "percentage", atomic.LoadUint32(&progress)*100/uint32(rows)/4, "elapsed", common.PrettyDuration(time.Since(start))) + } + } + }() // Create a hasher to reuse between invocations keccak512 := crypto.Keccak512Hasher() @@ -126,6 +137,7 @@ func generateCache(size uint64, seed []byte) []byte { copy(cache, keccak512(seed)) for offset := uint64(hashBytes); offset < size; offset += hashBytes { copy(cache[offset:], keccak512(cache[offset-hashBytes:offset])) + atomic.AddUint32(&progress, 1) } // Use a low-round version of randmemohash temp := make([]byte, hashBytes) @@ -139,6 +151,8 @@ func generateCache(size uint64, seed []byte) []byte { ) xorBytes(temp, cache[srcOff:srcOff+hashBytes], cache[xorOff:xorOff+hashBytes]) copy(cache[dstOff:], keccak512(temp)) + + atomic.AddUint32(&progress, 1) } } return cache From df72e20cc521b43092b9e3cc684836d4d673e126 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Mon, 6 Mar 2017 15:00:20 +0200 Subject: [PATCH 12/57] pow: only support prime calculations on Go 1.8 and above --- pow/ethash.go | 8 ++++- pow/ethash_algo.go | 37 ----------------------- pow/ethash_algo_go1.7.go | 47 +++++++++++++++++++++++++++++ pow/ethash_algo_go1.8.go | 57 +++++++++++++++++++++++++++++++++++ pow/ethash_algo_go1.8_test.go | 46 ++++++++++++++++++++++++++++ pow/ethash_algo_test.go | 25 --------------- 6 files changed, 157 insertions(+), 63 deletions(-) create mode 100644 pow/ethash_algo_go1.7.go create mode 100644 pow/ethash_algo_go1.8.go create mode 100644 pow/ethash_algo_go1.8_test.go diff --git a/pow/ethash.go b/pow/ethash.go index 602f9324f8..9dfeedb781 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -35,6 +35,7 @@ import ( ) var ( + ErrNonceOutOfRange = errors.New("nonce out of range") ErrInvalidDifficulty = errors.New("non-positive difficulty") ErrInvalidMixDigest = errors.New("invalid mix digest") ErrInvalidPoW = errors.New("pow difficulty invalid") @@ -174,13 +175,18 @@ func NewSharedEthash() PoW { // Verify implements PoW, checking whether the given block satisfies the PoW // difficulty requirements. func (ethash *Ethash) Verify(block Block) error { + // Sanity check that the block number is below the lookup table size (60M blocks) + number := block.NumberU64() + if number/epochLength >= uint64(len(cacheSizes)) { + // Go < 1.7 cannot calculate new cache/dataset sizes (no fast prime check) + return ErrNonceOutOfRange + } // Ensure twe have a valid difficulty for the block difficulty := block.Difficulty() if difficulty.Sign() <= 0 { return ErrInvalidDifficulty } // Recompute the digest and PoW value and verify against the block - number := block.NumberU64() cache := ethash.cache(number) size := datasetSize(number) diff --git a/pow/ethash_algo.go b/pow/ethash_algo.go index f6d05880a2..d3fac8d5be 100644 --- a/pow/ethash_algo.go +++ b/pow/ethash_algo.go @@ -19,7 +19,6 @@ package pow import ( "encoding/binary" "io" - "math/big" "runtime" "sync" "sync/atomic" @@ -45,42 +44,6 @@ const ( loopAccesses = 64 // Number of accesses in hashimoto loop ) -// cacheSize calculates and returns the size of the ethash verification cache that -// belongs to a certain block number. The cache size grows linearly, however, we -// always take the highest prime below the linearly growing threshold in order to -// reduce the risk of accidental regularities leading to cyclic behavior. -func cacheSize(block uint64) uint64 { - // If we have a pre-generated value, use that - epoch := int(block / epochLength) - if epoch < len(cacheSizes) { - return cacheSizes[epoch] - } - // No known cache size, calculate manually (sanity branch only) - size := uint64(cacheInitBytes + cacheGrowthBytes*epoch - hashBytes) - for !new(big.Int).SetUint64(size / hashBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 - size -= 2 * hashBytes - } - return size -} - -// datasetSize calculates and returns the size of the ethash mining dataset that -// belongs to a certain block number. The dataset size grows linearly, however, we -// always take the highest prime below the linearly growing threshold in order to -// reduce the risk of accidental regularities leading to cyclic behavior. -func datasetSize(block uint64) uint64 { - // If we have a pre-generated value, use that - epoch := int(block / epochLength) - if epoch < len(datasetSizes) { - return datasetSizes[epoch] - } - // No known dataset size, calculate manually (sanity branch only) - size := uint64(datasetInitBytes + datasetGrowthBytes*epoch - mixBytes) - for !new(big.Int).SetUint64(size / mixBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 - size -= 2 * mixBytes - } - return size -} - // seedHash is the seed to use for generating a verification cache and the mining // dataset. func seedHash(block uint64) []byte { diff --git a/pow/ethash_algo_go1.7.go b/pow/ethash_algo_go1.7.go new file mode 100644 index 0000000000..ce05b3bb08 --- /dev/null +++ b/pow/ethash_algo_go1.7.go @@ -0,0 +1,47 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build !go1.8 + +package pow + +// cacheSize calculates and returns the size of the ethash verification cache that +// belongs to a certain block number. The cache size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func cacheSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(cacheSizes) { + return cacheSizes[epoch] + } + // We don't have a way to verify primes fast before Go 1.8 + panic("fast prime testing unsupported in Go < 1.8") +} + +// datasetSize calculates and returns the size of the ethash mining dataset that +// belongs to a certain block number. The dataset size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func datasetSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(datasetSizes) { + return datasetSizes[epoch] + } + // We don't have a way to verify primes fast before Go 1.8 + panic("fast prime testing unsupported in Go < 1.8") +} diff --git a/pow/ethash_algo_go1.8.go b/pow/ethash_algo_go1.8.go new file mode 100644 index 0000000000..cac96cd5e9 --- /dev/null +++ b/pow/ethash_algo_go1.8.go @@ -0,0 +1,57 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build go1.8 + +package pow + +import "math/big" + +// cacheSize calculates and returns the size of the ethash verification cache that +// belongs to a certain block number. The cache size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func cacheSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(cacheSizes) { + return cacheSizes[epoch] + } + // No known cache size, calculate manually (sanity branch only) + size := uint64(cacheInitBytes + cacheGrowthBytes*uint64(epoch) - hashBytes) + for !new(big.Int).SetUint64(size / hashBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 + size -= 2 * hashBytes + } + return size +} + +// datasetSize calculates and returns the size of the ethash mining dataset that +// belongs to a certain block number. The dataset size grows linearly, however, we +// always take the highest prime below the linearly growing threshold in order to +// reduce the risk of accidental regularities leading to cyclic behavior. +func datasetSize(block uint64) uint64 { + // If we have a pre-generated value, use that + epoch := int(block / epochLength) + if epoch < len(datasetSizes) { + return datasetSizes[epoch] + } + // No known dataset size, calculate manually (sanity branch only) + size := uint64(datasetInitBytes + datasetGrowthBytes*uint64(epoch) - mixBytes) + for !new(big.Int).SetUint64(size / mixBytes).ProbablyPrime(1) { // Always accurate for n < 2^64 + size -= 2 * mixBytes + } + return size +} diff --git a/pow/ethash_algo_go1.8_test.go b/pow/ethash_algo_go1.8_test.go new file mode 100644 index 0000000000..57e0b0b7a2 --- /dev/null +++ b/pow/ethash_algo_go1.8_test.go @@ -0,0 +1,46 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build go1.8 + +package pow + +import "testing" + +// Tests whether the dataset size calculator work correctly by cross checking the +// hard coded lookup table with the value generated by it. +func TestSizeCalculations(t *testing.T) { + var tests []uint64 + + // Verify all the cache sizes from the lookup table + defer func(sizes []uint64) { cacheSizes = sizes }(cacheSizes) + tests, cacheSizes = cacheSizes, []uint64{} + + for i, test := range tests { + if size := cacheSize(uint64(i*epochLength) + 1); size != test { + t.Errorf("cache %d: cache size mismatch: have %d, want %d", i, size, test) + } + } + // Verify all the dataset sizes from the lookup table + defer func(sizes []uint64) { datasetSizes = sizes }(datasetSizes) + tests, datasetSizes = datasetSizes, []uint64{} + + for i, test := range tests { + if size := datasetSize(uint64(i*epochLength) + 1); size != test { + t.Errorf("dataset %d: dataset size mismatch: have %d, want %d", i, size, test) + } + } +} diff --git a/pow/ethash_algo_test.go b/pow/ethash_algo_test.go index 253ddfa72e..32e115db95 100644 --- a/pow/ethash_algo_test.go +++ b/pow/ethash_algo_test.go @@ -23,31 +23,6 @@ import ( "github.com/ethereum/go-ethereum/common/hexutil" ) -// Tests whether the dataset size calculator work correctly by cross checking the -// hard coded lookup table with the value generated by it. -func TestSizeCalculations(t *testing.T) { - var tests []uint64 - - // Verify all the cache sizes from the lookup table - defer func(sizes []uint64) { cacheSizes = sizes }(cacheSizes) - tests, cacheSizes = cacheSizes, []uint64{} - - for i, test := range tests { - if size := cacheSize(uint64(i*epochLength) + 1); size != test { - t.Errorf("cache %d: cache size mismatch: have %d, want %d", i, size, test) - } - } - // Verify all the dataset sizes from the lookup table - defer func(sizes []uint64) { datasetSizes = sizes }(datasetSizes) - tests, datasetSizes = datasetSizes, []uint64{} - - for i, test := range tests { - if size := datasetSize(uint64(i*epochLength) + 1); size != test { - t.Errorf("dataset %d: dataset size mismatch: have %d, want %d", i, size, test) - } - } -} - // Tests that verification caches can be correctly generated. func TestCacheGeneration(t *testing.T) { tests := []struct { From b7d93500f13e3054c81196273ebf676ad8ecb5ba Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Mon, 6 Mar 2017 17:20:25 +0200 Subject: [PATCH 13/57] all: finish integrating Go ethash, delete C++ vendor --- cmd/geth/main.go | 2 +- cmd/geth/misccmd.go | 4 +- cmd/geth/usage.go | 2 +- cmd/utils/flags.go | 15 +- eth/api.go | 25 +- eth/backend.go | 87 +--- internal/web3ext/web3ext.go | 16 +- miner/miner.go | 4 +- mobile/geth.go | 3 + pow/ethash.go | 219 ++++++++- .../github.com/ethereum/ethash/CMakeLists.txt | 14 - vendor/github.com/ethereum/ethash/MANIFEST.in | 17 - vendor/github.com/ethereum/ethash/Makefile | 6 - vendor/github.com/ethereum/ethash/README.md | 22 - vendor/github.com/ethereum/ethash/Vagrantfile | 7 - .../github.com/ethereum/ethash/appveyor.yml | 43 -- vendor/github.com/ethereum/ethash/ethash.go | 440 ------------------ vendor/github.com/ethereum/ethash/ethashc.go | 51 -- vendor/github.com/ethereum/ethash/setup.py | 47 -- vendor/vendor.json | 6 - 20 files changed, 230 insertions(+), 800 deletions(-) delete mode 100644 vendor/github.com/ethereum/ethash/CMakeLists.txt delete mode 100644 vendor/github.com/ethereum/ethash/MANIFEST.in delete mode 100644 vendor/github.com/ethereum/ethash/Makefile delete mode 100644 vendor/github.com/ethereum/ethash/README.md delete mode 100644 vendor/github.com/ethereum/ethash/Vagrantfile delete mode 100644 vendor/github.com/ethereum/ethash/appveyor.yml delete mode 100644 vendor/github.com/ethereum/ethash/ethash.go delete mode 100644 vendor/github.com/ethereum/ethash/ethashc.go delete mode 100755 vendor/github.com/ethereum/ethash/setup.py diff --git a/cmd/geth/main.go b/cmd/geth/main.go index bf5e81d45e..cc6d3ac6a1 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -95,6 +95,7 @@ func init() { utils.EthashCachesInMemoryFlag, utils.EthashCachesOnDiskFlag, utils.EthashDatasetDirFlag, + utils.EthashDatasetsInMemoryFlag, utils.EthashDatasetsOnDiskFlag, utils.FastSyncFlag, utils.LightModeFlag, @@ -111,7 +112,6 @@ func init() { utils.GasPriceFlag, utils.MinerThreadsFlag, utils.MiningEnabledFlag, - utils.AutoDAGFlag, utils.TargetGasLimitFlag, utils.NATFlag, utils.NoDiscoverFlag, diff --git a/cmd/geth/misccmd.go b/cmd/geth/misccmd.go index 077f1ad11e..073c36beb2 100644 --- a/cmd/geth/misccmd.go +++ b/cmd/geth/misccmd.go @@ -25,10 +25,10 @@ import ( "strconv" "strings" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/cmd/utils" "github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" "gopkg.in/urfave/cli.v1" ) @@ -87,7 +87,7 @@ func makedag(ctx *cli.Context) error { utils.Fatalf("Can't find dir") } fmt.Println("making DAG, this could take awhile...") - ethash.MakeDAG(blockNum, dir) + pow.MakeDataset(blockNum, dir) } default: wrongArgs() diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go index 34910daa55..74768f507c 100644 --- a/cmd/geth/usage.go +++ b/cmd/geth/usage.go @@ -84,6 +84,7 @@ var AppHelpFlagGroups = []flagGroup{ utils.EthashCachesInMemoryFlag, utils.EthashCachesOnDiskFlag, utils.EthashDatasetDirFlag, + utils.EthashDatasetsInMemoryFlag, utils.EthashDatasetsOnDiskFlag, }, }, @@ -141,7 +142,6 @@ var AppHelpFlagGroups = []flagGroup{ Flags: []cli.Flag{ utils.MiningEnabledFlag, utils.MinerThreadsFlag, - utils.AutoDAGFlag, utils.EtherbaseFlag, utils.TargetGasLimitFlag, utils.GasPriceFlag, diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index b92be84640..38c90d801a 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -132,9 +132,14 @@ var ( Name: "ethash.dagdir", Usage: "Directory to store the ethash mining DAGs (default = inside home folder)", } + EthashDatasetsInMemoryFlag = cli.IntFlag{ + Name: "ethash.dagsinmem", + Usage: "Number of recent ethash mining DAGs to keep in memory (1+GB each)", + Value: 1, + } EthashDatasetsOnDiskFlag = cli.IntFlag{ Name: "ethash.dagsondisk", - Usage: "Number of ethash mining DAGs to keep on disk (1+GB each)", + Usage: "Number of recent ethash mining DAGs to keep on disk (1+GB each)", Value: 2, } NetworkIdFlag = cli.IntFlag{ @@ -207,10 +212,6 @@ var ( Usage: "Target gas limit sets the artificial target gas floor for the blocks to mine", Value: params.GenesisGasLimit.Uint64(), } - AutoDAGFlag = cli.BoolFlag{ - Name: "autodag", - Usage: "Enable automatic DAG pregeneration", - } EtherbaseFlag = cli.StringFlag{ Name: "etherbase", Usage: "Public address for block mining rewards (default = first account created)", @@ -809,8 +810,8 @@ func RegisterEthService(ctx *cli.Context, stack *node.Node, extra []byte) { EthashCachesInMem: ctx.GlobalInt(EthashCachesInMemoryFlag.Name), EthashCachesOnDisk: ctx.GlobalInt(EthashCachesOnDiskFlag.Name), EthashDatasetDir: MakeEthashDatasetDir(ctx), + EthashDatasetsInMem: ctx.GlobalInt(EthashDatasetsInMemoryFlag.Name), EthashDatasetsOnDisk: ctx.GlobalInt(EthashDatasetsOnDiskFlag.Name), - AutoDAG: ctx.GlobalBool(AutoDAGFlag.Name) || ctx.GlobalBool(MiningEnabledFlag.Name), EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name), } @@ -982,7 +983,7 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai seal := pow.PoW(pow.FakePow{}) if !ctx.GlobalBool(FakePoWFlag.Name) { - seal = pow.NewFullEthash("", 1, 0, "", 0) + seal = pow.NewFullEthash("", 1, 0, "", 1, 0) } chain, err = core.NewBlockChain(chainDb, chainConfig, seal, new(event.TypeMux), vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}) if err != nil { diff --git a/eth/api.go b/eth/api.go index 3aac34ee02..b17968ebb2 100644 --- a/eth/api.go +++ b/eth/api.go @@ -29,7 +29,6 @@ import ( "strings" "time" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/core" @@ -40,7 +39,6 @@ import ( "github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" - "github.com/ethereum/go-ethereum/rpc" "golang.org/x/net/context" ) @@ -137,7 +135,6 @@ func NewPrivateMinerAPI(e *Ethereum) *PrivateMinerAPI { // Start the miner with the given number of threads. If threads is nil the number of // workers started is equal to the number of logical CPU's that are usable by this process. func (s *PrivateMinerAPI) Start(threads *int) (bool, error) { - s.e.StartAutoDAG() var err error if threads == nil { err = s.e.StartMining(runtime.NumCPU()) @@ -173,25 +170,9 @@ func (s *PrivateMinerAPI) SetEtherbase(etherbase common.Address) bool { return true } -// StartAutoDAG starts auto DAG generation. This will prevent the DAG generating on epoch change -// which will cause the node to stop mining during the generation process. -func (s *PrivateMinerAPI) StartAutoDAG() bool { - s.e.StartAutoDAG() - return true -} - -// StopAutoDAG stops auto DAG generation -func (s *PrivateMinerAPI) StopAutoDAG() bool { - s.e.StopAutoDAG() - return true -} - -// MakeDAG creates the new DAG for the given block number -func (s *PrivateMinerAPI) MakeDAG(blockNr rpc.BlockNumber) (bool, error) { - if err := ethash.MakeDAG(uint64(blockNr.Int64()), ""); err != nil { - return false, err - } - return true, nil +// GetHashrate returns the current hashrate of the miner. +func (s *PrivateMinerAPI) GetHashrate() uint64 { + return uint64(s.e.miner.HashRate()) } // PrivateAdminAPI is the collection of Etheruem full node-related APIs diff --git a/eth/backend.go b/eth/backend.go index d49251d75c..ef951a6c2e 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -21,14 +21,11 @@ import ( "errors" "fmt" "math/big" - "os" - "path/filepath" "regexp" "strings" "sync" "time" - "github.com/ethereum/ethash" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" @@ -78,7 +75,6 @@ type Config struct { DatabaseHandles int DocRoot string - AutoDAG bool PowFake bool PowTest bool PowShared bool @@ -88,6 +84,7 @@ type Config struct { EthashCachesInMem int EthashCachesOnDisk int EthashDatasetDir string + EthashDatasetsInMem int EthashDatasetsOnDisk int Etherbase common.Address @@ -138,8 +135,6 @@ type Ethereum struct { miner *miner.Miner Mining bool MinerThreads int - AutoDAG bool - autodagquit chan bool etherbase common.Address solcPath string @@ -173,7 +168,6 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { netVersionId: config.NetworkId, etherbase: config.Etherbase, MinerThreads: config.MinerThreads, - AutoDAG: config.AutoDAG, solcPath: config.SolcPath, } @@ -298,7 +292,7 @@ func CreatePoW(ctx *node.ServiceContext, config *Config) pow.PoW { return pow.NewSharedEthash() default: return pow.NewFullEthash(ctx.ResolvePath(config.EthashCacheDir), config.EthashCachesInMem, config.EthashCachesOnDisk, - config.EthashDatasetDir, config.EthashDatasetsOnDisk) + config.EthashDatasetDir, config.EthashDatasetsInMem, config.EthashDatasetsOnDisk) } } @@ -414,9 +408,7 @@ func (s *Ethereum) Protocols() []p2p.Protocol { // Ethereum protocol implementation. func (s *Ethereum) Start(srvr *p2p.Server) error { s.netRPCService = ethapi.NewPublicNetAPI(srvr, s.NetVersion()) - if s.AutoDAG { - s.StartAutoDAG() - } + s.protocolManager.Start() if s.lesServer != nil { s.lesServer.Start(srvr) @@ -439,8 +431,6 @@ func (s *Ethereum) Stop() error { s.miner.Stop() s.eventMux.Stop() - s.StopAutoDAG() - s.chainDb.Close() close(s.shutdownChan) @@ -451,74 +441,3 @@ func (s *Ethereum) Stop() error { func (s *Ethereum) WaitForShutdown() { <-s.shutdownChan } - -// StartAutoDAG() spawns a go routine that checks the DAG every autoDAGcheckInterval -// by default that is 10 times per epoch -// in epoch n, if we past autoDAGepochHeight within-epoch blocks, -// it calls ethash.MakeDAG to pregenerate the DAG for the next epoch n+1 -// if it does not exist yet as well as remove the DAG for epoch n-1 -// the loop quits if autodagquit channel is closed, it can safely restart and -// stop any number of times. -// For any more sophisticated pattern of DAG generation, use CLI subcommand -// makedag -func (self *Ethereum) StartAutoDAG() { - if self.autodagquit != nil { - return // already started - } - go func() { - log.Info("Pre-generation of ethash DAG on", "dir", ethash.DefaultDir) - var nextEpoch uint64 - timer := time.After(0) - self.autodagquit = make(chan bool) - for { - select { - case <-timer: - log.Info("Checking DAG availability", "dir", ethash.DefaultDir) - currentBlock := self.BlockChain().CurrentBlock().NumberU64() - thisEpoch := currentBlock / epochLength - if nextEpoch <= thisEpoch { - if currentBlock%epochLength > autoDAGepochHeight { - if thisEpoch > 0 { - previousDag, previousDagFull := dagFiles(thisEpoch - 1) - os.Remove(filepath.Join(ethash.DefaultDir, previousDag)) - os.Remove(filepath.Join(ethash.DefaultDir, previousDagFull)) - log.Info("Removed previous DAG", "epoch", thisEpoch-1, "dag", previousDag) - } - nextEpoch = thisEpoch + 1 - dag, _ := dagFiles(nextEpoch) - if _, err := os.Stat(dag); os.IsNotExist(err) { - log.Info("Pre-generating next DAG", "epoch", nextEpoch, "dag", dag) - err := ethash.MakeDAG(nextEpoch*epochLength, "") // "" -> ethash.DefaultDir - if err != nil { - log.Error("Error generating DAG", "epoch", nextEpoch, "dag", dag, "err", err) - return - } - } else { - log.Warn("DAG already exists", "epoch", nextEpoch, "dag", dag) - } - } - } - timer = time.After(autoDAGcheckInterval) - case <-self.autodagquit: - return - } - } - }() -} - -// stopAutoDAG stops automatic DAG pregeneration by quitting the loop -func (self *Ethereum) StopAutoDAG() { - if self.autodagquit != nil { - close(self.autodagquit) - self.autodagquit = nil - } - log.Info("Pre-generation of ethash DAG off", "dir", ethash.DefaultDir) -} - -// dagFiles(epoch) returns the two alternative DAG filenames (not a path) -// 1) - 2) full-R- -func dagFiles(epoch uint64) (string, string) { - seedHash, _ := ethash.GetSeedHash(epoch * epochLength) - dag := fmt.Sprintf("full-R%d-%x", ethashRevision, seedHash[:8]) - return dag, "full-R" + dag -} diff --git a/internal/web3ext/web3ext.go b/internal/web3ext/web3ext.go index e6bd181169..23112c1f19 100644 --- a/internal/web3ext/web3ext.go +++ b/internal/web3ext/web3ext.go @@ -399,20 +399,8 @@ web3._extend({ inputFormatter: [web3._extend.utils.fromDecimal] }), new web3._extend.Method({ - name: 'startAutoDAG', - call: 'miner_startAutoDAG', - params: 0 - }), - new web3._extend.Method({ - name: 'stopAutoDAG', - call: 'miner_stopAutoDAG', - params: 0 - }), - new web3._extend.Method({ - name: 'makeDAG', - call: 'miner_makeDAG', - params: 1, - inputFormatter: [web3._extend.formatters.inputDefaultBlockNumberFormatter] + name: 'getHashrate', + call: 'miner_getHashrate' }) ], properties: [] diff --git a/miner/miner.go b/miner/miner.go index a91e1ef6b0..dc0591b9a0 100644 --- a/miner/miner.go +++ b/miner/miner.go @@ -164,7 +164,9 @@ func (self *Miner) HashRate() (tot int64) { // aspects of the worker/locking up agents so we can get an accurate // hashrate? for agent := range self.worker.agents { - tot += agent.GetHashRate() + if _, ok := agent.(*CpuAgent); !ok { + tot += agent.GetHashRate() + } } return } diff --git a/mobile/geth.go b/mobile/geth.go index 872b482d35..62791652d2 100644 --- a/mobile/geth.go +++ b/mobile/geth.go @@ -151,6 +151,9 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) { GpobaseStepDown: 10, GpobaseStepUp: 100, GpobaseCorrectionFactor: 110, + EthashCacheDir: "ethash", + EthashCachesInMem: 2, + EthashCachesOnDisk: 3, } if err := rawStack.Register(func(ctx *node.ServiceContext) (node.Service, error) { return les.New(ctx, ethConf) diff --git a/pow/ethash.go b/pow/ethash.go index 9dfeedb781..0af1904b60 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -22,7 +22,9 @@ import ( "errors" "fmt" "io/ioutil" + "math" "math/big" + "math/rand" "os" "path/filepath" "sync" @@ -46,7 +48,7 @@ var ( maxUint256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0)) // sharedEthash is a full instance that can be shared between multiple users. - sharedEthash = NewFullEthash("", 3, 0, "", 0) + sharedEthash = NewFullEthash("", 3, 0, "", 1, 0) // algorithmRevision is the data structure version used for file naming. algorithmRevision = 23 @@ -64,13 +66,13 @@ type cache struct { lock sync.Mutex // Ensures thread safety for updating the usage time } -// generate ensures that the cache content is generates. +// generate ensures that the cache content is generated before use. func (c *cache) generate(dir string, limit int, test bool) { c.once.Do(func() { // If we have a testing cache, generate and return if test { rawCache := generateCache(1024, seedHash(c.epoch*epochLength+1)) - c.cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + c.cache = prepare(1024, bytes.NewReader(rawCache)) return } // Full cache generation is needed, check cache dir for existing data @@ -117,25 +119,112 @@ func (c *cache) generate(dir string, limit int, test bool) { }) } +// dataset wraps an ethash dataset with some metadata to allow easier concurrent use. +type dataset struct { + epoch uint64 // Epoch for which this cache is relevant + dataset []uint32 // The actual cache data content + used time.Time // Timestamp of the last use for smarter eviction + once sync.Once // Ensures the cache is generated only once + lock sync.Mutex // Ensures thread safety for updating the usage time +} + +// generate ensures that the dataset content is generated before use. +func (d *dataset) generate(dir string, limit int, test bool, discard bool) { + d.once.Do(func() { + // If we have a testing dataset, generate and return + if test { + rawCache := generateCache(1024, seedHash(d.epoch*epochLength+1)) + intCache := prepare(1024, bytes.NewReader(rawCache)) + + rawDataset := generateDataset(32*1024, intCache) + d.dataset = prepare(32*1024, bytes.NewReader(rawDataset)) + + return + } + // Full dataset generation is needed, check dataset dir for existing data + csize := cacheSize(d.epoch*epochLength + 1) + dsize := datasetSize(d.epoch*epochLength + 1) + seed := seedHash(d.epoch*epochLength + 1) + + path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x", algorithmRevision, seed)) + logger := log.New("seed", hexutil.Bytes(seed)) + + if dir != "" { + dump, err := os.Open(path) + if err == nil { + if !discard { + logger.Info("Loading ethash DAG from disk") + start := time.Now() + d.dataset = prepare(dsize, bufio.NewReader(dump)) + logger.Info("Loaded ethash DAG from disk", "elapsed", common.PrettyDuration(time.Since(start))) + } + dump.Close() + return + } + } + // No previous disk dataset was available, generate on the fly + rawCache := generateCache(csize, seed) + intCache := prepare(csize, bytes.NewReader(rawCache)) + + rawDataset := generateDataset(dsize, intCache) + if !discard { + d.dataset = prepare(dsize, bytes.NewReader(rawDataset)) + } + // If a dataset directory is given, attempt to serialize for next time + if dir != "" { + // Store the ethash dataset to disk + start := time.Now() + if err := os.MkdirAll(filepath.Dir(path), os.ModePerm); err != nil { + logger.Error("Failed to create ethash DAG dir", "err", err) + } else if err := ioutil.WriteFile(path, rawDataset, os.ModePerm); err != nil { + logger.Error("Failed to write ethash DAG to disk", "err", err) + } else { + logger.Info("Stored ethash DAG to disk", "elapsed", common.PrettyDuration(time.Since(start))) + } + // Iterate over all previous instances and delete old ones + for ep := int(d.epoch) - limit; ep >= 0; ep-- { + seed := seedHash(uint64(ep)*epochLength + 1) + path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x", algorithmRevision, seed)) + os.Remove(path) + } + } + }) +} + +// MakeCache generates a new ethash cache and optionally stores it to disk. +func MakeCache(block uint64, dir string) { + c := cache{epoch: block/epochLength + 1} + c.generate(dir, math.MaxInt32, false) +} + +// MakeDataset generates a new ethash dataset and optionally stores it to disk. +func MakeDataset(block uint64, dir string) { + d := dataset{epoch: block/epochLength + 1} + d.generate(dir, math.MaxInt32, false, true) +} + // Ethash is a PoW data struture implementing the ethash algorithm. type Ethash struct { cachedir string // Data directory to store the verification caches cachesinmem int // Number of caches to keep in memory cachesondisk int // Number of caches to keep on disk dagdir string // Data directory to store full mining datasets + dagsinmem int // Number of mining datasets to keep in memory dagsondisk int // Number of mining datasets to keep on disk - caches map[uint64]*cache // In memory caches to avoid regenerating too often - future *cache // Pre-generated cache for the estimated future epoch - lock sync.Mutex // Ensures thread safety for the in-memory caches + caches map[uint64]*cache // In memory caches to avoid regenerating too often + fcache *cache // Pre-generated cache for the estimated future epoch + datasets map[uint64]*dataset // In memory datasets to avoid regenerating too often + fdataset *dataset // Pre-generated dataset for the estimated future epoch + lock sync.Mutex // Ensures thread safety for the in-memory caches - hashrate *metrics.StandardMeter // Meter tracking the average hashrate + hashrate metrics.Meter // Meter tracking the average hashrate tester bool // Flag whether to use a smaller test dataset } // NewFullEthash creates a full sized ethash PoW scheme. -func NewFullEthash(cachedir string, cachesinmem, cachesondisk int, dagdir string, dagsondisk int) PoW { +func NewFullEthash(cachedir string, cachesinmem, cachesondisk int, dagdir string, dagsinmem, dagsondisk int) PoW { if cachesinmem <= 0 { log.Warn("One ethash cache must alwast be in memory", "requested", cachesinmem) cachesinmem = 1 @@ -151,8 +240,11 @@ func NewFullEthash(cachedir string, cachesinmem, cachesondisk int, dagdir string cachesinmem: cachesinmem, cachesondisk: cachesondisk, dagdir: dagdir, + dagsinmem: dagsinmem, dagsondisk: dagsondisk, caches: make(map[uint64]*cache), + datasets: make(map[uint64]*dataset), + hashrate: metrics.NewMeter(), } } @@ -162,7 +254,9 @@ func NewTestEthash() PoW { return &Ethash{ cachesinmem: 1, caches: make(map[uint64]*cache), + datasets: make(map[uint64]*dataset), tester: true, + hashrate: metrics.NewMeter(), } } @@ -181,7 +275,7 @@ func (ethash *Ethash) Verify(block Block) error { // Go < 1.7 cannot calculate new cache/dataset sizes (no fast prime check) return ErrNonceOutOfRange } - // Ensure twe have a valid difficulty for the block + // Ensure that we have a valid difficulty for the block difficulty := block.Difficulty() if difficulty.Sign() <= 0 { return ErrInvalidDifficulty @@ -228,9 +322,9 @@ func (ethash *Ethash) cache(block uint64) []uint32 { log.Debug("Evicted ethash cache", "epoch", evict.epoch, "used", evict.used) } // If we have the new cache pre-generated, use that, otherwise create a new one - if ethash.future != nil && ethash.future.epoch == epoch { + if ethash.fcache != nil && ethash.fcache.epoch == epoch { log.Debug("Using pre-generated cache", "epoch", epoch) - current, ethash.future = ethash.future, nil + current, ethash.fcache = ethash.fcache, nil } else { log.Debug("Requiring new ethash cache", "epoch", epoch) current = &cache{epoch: epoch} @@ -238,10 +332,10 @@ func (ethash *Ethash) cache(block uint64) []uint32 { ethash.caches[epoch] = current // If we just used up the future cache, or need a refresh, regenerate - if ethash.future == nil || ethash.future.epoch <= epoch { + if ethash.fcache == nil || ethash.fcache.epoch <= epoch { log.Debug("Requiring new future ethash cache", "epoch", epoch+1) future = &cache{epoch: epoch + 1} - ethash.future = future + ethash.fcache = future } } current.used = time.Now() @@ -254,7 +348,7 @@ func (ethash *Ethash) cache(block uint64) []uint32 { current.used = time.Now() current.lock.Unlock() - // If we exhusted the future cache, now's a goot time to regenerate it + // If we exhausted the future cache, now's a good time to regenerate it if future != nil { go future.generate(ethash.cachedir, ethash.cachesondisk, ethash.tester) } @@ -264,7 +358,102 @@ func (ethash *Ethash) cache(block uint64) []uint32 { // Search implements PoW, attempting to find a nonce that satisfies the block's // difficulty requirements. func (ethash *Ethash) Search(block Block, stop <-chan struct{}) (uint64, []byte) { - return 0, nil + // Extract some data from the block + var ( + hash = block.HashNoNonce().Bytes() + diff = block.Difficulty() + target = new(big.Int).Div(maxUint256, diff) + ) + // Retrieve the mining dataset + dataset, size := ethash.dataset(block.NumberU64()), datasetSize(block.NumberU64()) + + // Start generating random nonces until we abort or find a good one + var ( + attempts int64 + + rand = rand.New(rand.NewSource(time.Now().UnixNano())) + nonce = uint64(rand.Int63()) + ) + for { + select { + case <-stop: + // Mining terminated, update stats and abort + ethash.hashrate.Mark(attempts) + return 0, nil + + default: + // We don't have to update hash rate on every nonce, so update after after 2^X nonces + attempts++ + if (attempts % (1 << 15)) == 0 { + ethash.hashrate.Mark(attempts) + attempts = 0 + } + // Compute the PoW value of this nonce + digest, result := hashimotoFull(size, dataset, hash, nonce) + if new(big.Int).SetBytes(result).Cmp(target) <= 0 { + return nonce, digest + } + nonce++ + } + } +} + +// dataset tries to retrieve a mining dataset for the specified block number +// by first checking against a list of in-memory datasets, then against DAGs +// stored on disk, and finally generating one if none can be found. +func (ethash *Ethash) dataset(block uint64) []uint32 { + epoch := block / epochLength + + // If we have a PoW for that epoch, use that + ethash.lock.Lock() + + current, future := ethash.datasets[epoch], (*dataset)(nil) + if current == nil { + // No in-memory dataset, evict the oldest if the dataset limit was reached + for len(ethash.datasets) >= ethash.dagsinmem { + var evict *dataset + for _, dataset := range ethash.datasets { + if evict == nil || evict.used.After(dataset.used) { + evict = dataset + } + } + delete(ethash.datasets, evict.epoch) + + log.Debug("Evicted ethash dataset", "epoch", evict.epoch, "used", evict.used) + } + // If we have the new cache pre-generated, use that, otherwise create a new one + if ethash.fdataset != nil && ethash.fdataset.epoch == epoch { + log.Debug("Using pre-generated dataset", "epoch", epoch) + current = &dataset{epoch: ethash.fdataset.epoch} // Reload from disk + ethash.fdataset = nil + } else { + log.Debug("Requiring new ethash dataset", "epoch", epoch) + current = &dataset{epoch: epoch} + } + ethash.datasets[epoch] = current + + // If we just used up the future dataset, or need a refresh, regenerate + if ethash.fdataset == nil || ethash.fdataset.epoch <= epoch { + log.Debug("Requiring new future ethash dataset", "epoch", epoch+1) + future = &dataset{epoch: epoch + 1} + ethash.fdataset = future + } + } + current.used = time.Now() + ethash.lock.Unlock() + + // Wait for generation finish, bump the timestamp and finalize the cache + current.generate(ethash.dagdir, ethash.dagsondisk, ethash.tester, false) + + current.lock.Lock() + current.used = time.Now() + current.lock.Unlock() + + // If we exhausted the future dataset, now's a good time to regenerate it + if future != nil { + go future.generate(ethash.dagdir, ethash.dagsondisk, ethash.tester, true) // Discard results from memorys + } + return current.dataset } // Hashrate implements PoW, returning the measured rate of the search invocations diff --git a/vendor/github.com/ethereum/ethash/CMakeLists.txt b/vendor/github.com/ethereum/ethash/CMakeLists.txt deleted file mode 100644 index 807c43e963..0000000000 --- a/vendor/github.com/ethereum/ethash/CMakeLists.txt +++ /dev/null @@ -1,14 +0,0 @@ -cmake_minimum_required(VERSION 2.8.7) -project(ethash) - -set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/") -set(ETHHASH_LIBS ethash) - -if (WIN32 AND WANT_CRYPTOPP) - add_subdirectory(cryptopp) -endif() - -add_subdirectory(src/libethash) - -add_subdirectory(src/benchmark EXCLUDE_FROM_ALL) -add_subdirectory(test/c) diff --git a/vendor/github.com/ethereum/ethash/MANIFEST.in b/vendor/github.com/ethereum/ethash/MANIFEST.in deleted file mode 100644 index 74e73c8be4..0000000000 --- a/vendor/github.com/ethereum/ethash/MANIFEST.in +++ /dev/null @@ -1,17 +0,0 @@ -include setup.py - -# C sources -include src/libethash/internal.c -include src/libethash/sha3.c -include src/libethash/util.c -include src/python/core.c - -# Headers -include src/libethash/compiler.h -include src/libethash/data_sizes.h -include src/libethash/endian.h -include src/libethash/ethash.h -include src/libethash/fnv.h -include src/libethash/internal.h -include src/libethash/sha3.h -include src/libethash/util.h diff --git a/vendor/github.com/ethereum/ethash/Makefile b/vendor/github.com/ethereum/ethash/Makefile deleted file mode 100644 index 741d3b56dc..0000000000 --- a/vendor/github.com/ethereum/ethash/Makefile +++ /dev/null @@ -1,6 +0,0 @@ -.PHONY: clean test -test: - ./test/test.sh - -clean: - rm -rf *.so pyethash.egg-info/ build/ test/python/python-virtual-env/ test/c/build/ pyethash.so test/python/*.pyc dist/ MANIFEST diff --git a/vendor/github.com/ethereum/ethash/README.md b/vendor/github.com/ethereum/ethash/README.md deleted file mode 100644 index 2b2c3b544c..0000000000 --- a/vendor/github.com/ethereum/ethash/README.md +++ /dev/null @@ -1,22 +0,0 @@ -[![Build Status](https://travis-ci.org/ethereum/ethash.svg?branch=master)](https://travis-ci.org/ethereum/ethash) -[![Windows Build Status](https://ci.appveyor.com/api/projects/status/github/debris/ethash?branch=master&svg=true)](https://ci.appveyor.com/project/debris/ethash-nr37r/branch/master) - -# Ethash - -For details on this project, please see the Ethereum wiki: -https://github.com/ethereum/wiki/wiki/Ethash - -### Coding Style for C++ code: - -Follow the same exact style as in [cpp-ethereum](https://github.com/ethereum/cpp-ethereum/blob/develop/CodingStandards.txt) - -### Coding Style for C code: - -The main thing above all is code consistency. - -- Tabs for indentation. A tab is 4 spaces -- Try to stick to the [K&R](http://en.wikipedia.org/wiki/Indent_style#K.26R_style), - especially for the C code. -- Keep the line lengths reasonable. No hard limit on 80 characters but don't go further - than 110. Some people work with multiple buffers next to each other. - Make them like you :) diff --git a/vendor/github.com/ethereum/ethash/Vagrantfile b/vendor/github.com/ethereum/ethash/Vagrantfile deleted file mode 100644 index 03891653f0..0000000000 --- a/vendor/github.com/ethereum/ethash/Vagrantfile +++ /dev/null @@ -1,7 +0,0 @@ -# -*- mode: ruby -*- -# vi: set ft=ruby : - -Vagrant.configure(2) do |config| - config.vm.box = "Ubuntu 12.04" - config.vm.box_url = "https://cloud-images.ubuntu.com/vagrant/precise/current/precise-server-cloudimg-amd64-vagrant-disk1.box" -end diff --git a/vendor/github.com/ethereum/ethash/appveyor.yml b/vendor/github.com/ethereum/ethash/appveyor.yml deleted file mode 100644 index ac36a06261..0000000000 --- a/vendor/github.com/ethereum/ethash/appveyor.yml +++ /dev/null @@ -1,43 +0,0 @@ -version: 1.0.0.{build} - -environment: - BOOST_ROOT: "c:/projects/ethash/deps/boost" - -branches: - only: - - master - - develop - -os: Windows Server 2012 R2 - -clone_folder: c:\projects\ethash - -#platform: Any CPU -#configuration: Debug - -install: - # by default, all script lines are interpreted as batch - -# scripts to run before build -before_build: - - echo "Downloading boost..." - - mkdir c:\projects\ethash\deps - - cd c:\projects\ethash\deps - - curl -O https://build.ethdev.com/builds/windows-precompiled/boost.tar.gz - - echo "Unzipping boost..." - - 7z x boost.tar.gz > nul - - 7z x boost.tar > nul - - ls - - echo "Running cmake..." - - cd c:\projects\ethash - - cmake . - -build: - project: ALL_BUILD.vcxproj # path to Visual Studio solution or project - -after_build: - - echo "Running tests..." - - cd c:\projects\ethash\test\c\Debug - - Test.exe - - echo "Finished!" - diff --git a/vendor/github.com/ethereum/ethash/ethash.go b/vendor/github.com/ethereum/ethash/ethash.go deleted file mode 100644 index 8e5cd81280..0000000000 --- a/vendor/github.com/ethereum/ethash/ethash.go +++ /dev/null @@ -1,440 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// Copyright 2015 Lefteris Karapetsas -// Copyright 2015 Matthew Wampler-Doty -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package ethash - -/* -#include "src/libethash/internal.h" - -int ethashGoCallback_cgo(unsigned); -*/ -import "C" - -import ( - "errors" - "fmt" - "io/ioutil" - "math/big" - "math/rand" - "os" - "os/user" - "path/filepath" - "runtime" - "sync" - "sync/atomic" - "time" - "unsafe" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/pow" -) - -var ( - maxUint256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0)) - sharedLight = new(Light) -) - -const ( - epochLength uint64 = 30000 - cacheSizeForTesting C.uint64_t = 1024 - dagSizeForTesting C.uint64_t = 1024 * 32 -) - -var DefaultDir = defaultDir() - -func defaultDir() string { - home := os.Getenv("HOME") - if user, err := user.Current(); err == nil { - home = user.HomeDir - } - if runtime.GOOS == "windows" { - return filepath.Join(home, "AppData", "Ethash") - } - return filepath.Join(home, ".ethash") -} - -// cache wraps an ethash_light_t with some metadata -// and automatic memory management. -type cache struct { - epoch uint64 - used time.Time - test bool - - gen sync.Once // ensures cache is only generated once. - ptr *C.struct_ethash_light -} - -// generate creates the actual cache. it can be called from multiple -// goroutines. the first call will generate the cache, subsequent -// calls wait until it is generated. -func (cache *cache) generate() { - cache.gen.Do(func() { - started := time.Now() - seedHash := makeSeedHash(cache.epoch) - log.Debug(fmt.Sprintf("Generating cache for epoch %d (%x)", cache.epoch, seedHash)) - size := C.ethash_get_cachesize(C.uint64_t(cache.epoch * epochLength)) - if cache.test { - size = cacheSizeForTesting - } - cache.ptr = C.ethash_light_new_internal(size, (*C.ethash_h256_t)(unsafe.Pointer(&seedHash[0]))) - runtime.SetFinalizer(cache, freeCache) - log.Debug(fmt.Sprintf("Done generating cache for epoch %d, it took %v", cache.epoch, time.Since(started))) - }) -} - -func freeCache(cache *cache) { - C.ethash_light_delete(cache.ptr) - cache.ptr = nil -} - -func (cache *cache) compute(dagSize uint64, hash common.Hash, nonce uint64) (ok bool, mixDigest, result common.Hash) { - ret := C.ethash_light_compute_internal(cache.ptr, C.uint64_t(dagSize), hashToH256(hash), C.uint64_t(nonce)) - // Make sure cache is live until after the C call. - // This is important because a GC might happen and execute - // the finalizer before the call completes. - _ = cache - return bool(ret.success), h256ToHash(ret.mix_hash), h256ToHash(ret.result) -} - -// Light implements the Verify half of the proof of work. It uses a few small -// in-memory caches to verify the nonces found by Full. -type Light struct { - test bool // If set, use a smaller cache size - - mu sync.Mutex // Protects the per-epoch map of verification caches - caches map[uint64]*cache // Currently maintained verification caches - future *cache // Pre-generated cache for the estimated future DAG - - NumCaches int // Maximum number of caches to keep before eviction (only init, don't modify) -} - -// Verify checks whether the block's nonce is valid. -func (l *Light) Verify(block pow.Block) bool { - // TODO: do ethash_quick_verify before getCache in order - // to prevent DOS attacks. - blockNum := block.NumberU64() - if blockNum >= epochLength*2048 { - log.Debug(fmt.Sprintf("block number %d too high, limit is %d", epochLength*2048)) - return false - } - - difficulty := block.Difficulty() - /* Cannot happen if block header diff is validated prior to PoW, but can - happen if PoW is checked first due to parallel PoW checking. - We could check the minimum valid difficulty but for SoC we avoid (duplicating) - Ethereum protocol consensus rules here which are not in scope of Ethash - */ - if difficulty.Cmp(common.Big0) == 0 { - log.Debug(fmt.Sprintf("invalid block difficulty")) - return false - } - - cache := l.getCache(blockNum) - dagSize := C.ethash_get_datasize(C.uint64_t(blockNum)) - if l.test { - dagSize = dagSizeForTesting - } - // Recompute the hash using the cache. - ok, mixDigest, result := cache.compute(uint64(dagSize), block.HashNoNonce(), block.Nonce()) - if !ok { - return false - } - - // avoid mixdigest malleability as it's not included in a block's "hashNononce" - if block.MixDigest() != mixDigest { - return false - } - - // The actual check. - target := new(big.Int).Div(maxUint256, difficulty) - return result.Big().Cmp(target) <= 0 -} - -func h256ToHash(in C.ethash_h256_t) common.Hash { - return *(*common.Hash)(unsafe.Pointer(&in.b)) -} - -func hashToH256(in common.Hash) C.ethash_h256_t { - return C.ethash_h256_t{b: *(*[32]C.uint8_t)(unsafe.Pointer(&in[0]))} -} - -func (l *Light) getCache(blockNum uint64) *cache { - var c *cache - epoch := blockNum / epochLength - - // If we have a PoW for that epoch, use that - l.mu.Lock() - if l.caches == nil { - l.caches = make(map[uint64]*cache) - } - if l.NumCaches == 0 { - l.NumCaches = 3 - } - c = l.caches[epoch] - if c == nil { - // No cached DAG, evict the oldest if the cache limit was reached - if len(l.caches) >= l.NumCaches { - var evict *cache - for _, cache := range l.caches { - if evict == nil || evict.used.After(cache.used) { - evict = cache - } - } - log.Debug(fmt.Sprintf("Evicting DAG for epoch %d in favour of epoch %d", evict.epoch, epoch)) - delete(l.caches, evict.epoch) - } - // If we have the new DAG pre-generated, use that, otherwise create a new one - if l.future != nil && l.future.epoch == epoch { - log.Debug(fmt.Sprintf("Using pre-generated DAG for epoch %d", epoch)) - c, l.future = l.future, nil - } else { - log.Debug(fmt.Sprintf("No pre-generated DAG available, creating new for epoch %d", epoch)) - c = &cache{epoch: epoch, test: l.test} - } - l.caches[epoch] = c - - // If we just used up the future cache, or need a refresh, regenerate - if l.future == nil || l.future.epoch <= epoch { - log.Debug(fmt.Sprintf("Pre-generating DAG for epoch %d", epoch+1)) - l.future = &cache{epoch: epoch + 1, test: l.test} - go l.future.generate() - } - } - c.used = time.Now() - l.mu.Unlock() - - // Wait for generation finish and return the cache - c.generate() - return c -} - -// dag wraps an ethash_full_t with some metadata -// and automatic memory management. -type dag struct { - epoch uint64 - test bool - dir string - - gen sync.Once // ensures DAG is only generated once. - ptr *C.struct_ethash_full -} - -// generate creates the actual DAG. it can be called from multiple -// goroutines. the first call will generate the DAG, subsequent -// calls wait until it is generated. -func (d *dag) generate() { - d.gen.Do(func() { - var ( - started = time.Now() - seedHash = makeSeedHash(d.epoch) - blockNum = C.uint64_t(d.epoch * epochLength) - cacheSize = C.ethash_get_cachesize(blockNum) - dagSize = C.ethash_get_datasize(blockNum) - ) - if d.test { - cacheSize = cacheSizeForTesting - dagSize = dagSizeForTesting - } - if d.dir == "" { - d.dir = DefaultDir - } - log.Info(fmt.Sprintf("Generating DAG for epoch %d (size %d) (%x)", d.epoch, dagSize, seedHash)) - // Generate a temporary cache. - // TODO: this could share the cache with Light - cache := C.ethash_light_new_internal(cacheSize, (*C.ethash_h256_t)(unsafe.Pointer(&seedHash[0]))) - defer C.ethash_light_delete(cache) - // Generate the actual DAG. - d.ptr = C.ethash_full_new_internal( - C.CString(d.dir), - hashToH256(seedHash), - dagSize, - cache, - (C.ethash_callback_t)(unsafe.Pointer(C.ethashGoCallback_cgo)), - ) - if d.ptr == nil { - panic("ethash_full_new IO or memory error") - } - runtime.SetFinalizer(d, freeDAG) - log.Info(fmt.Sprintf("Done generating DAG for epoch %d, it took %v", d.epoch, time.Since(started))) - }) -} - -func freeDAG(d *dag) { - C.ethash_full_delete(d.ptr) - d.ptr = nil -} - -func (d *dag) Ptr() unsafe.Pointer { - return unsafe.Pointer(d.ptr.data) -} - -//export ethashGoCallback -func ethashGoCallback(percent C.unsigned) C.int { - log.Info(fmt.Sprintf("Generating DAG: %d%%", percent)) - return 0 -} - -// MakeDAG pre-generates a DAG file for the given block number in the -// given directory. If dir is the empty string, the default directory -// is used. -func MakeDAG(blockNum uint64, dir string) error { - d := &dag{epoch: blockNum / epochLength, dir: dir} - if blockNum >= epochLength*2048 { - return fmt.Errorf("block number too high, limit is %d", epochLength*2048) - } - d.generate() - if d.ptr == nil { - return errors.New("failed") - } - return nil -} - -// Full implements the Search half of the proof of work. -type Full struct { - Dir string // use this to specify a non-default DAG directory - - test bool // if set use a smaller DAG size - turbo bool - hashRate int32 - - mu sync.Mutex // protects dag - current *dag // current full DAG -} - -func (pow *Full) getDAG(blockNum uint64) (d *dag) { - epoch := blockNum / epochLength - pow.mu.Lock() - if pow.current != nil && pow.current.epoch == epoch { - d = pow.current - } else { - d = &dag{epoch: epoch, test: pow.test, dir: pow.Dir} - pow.current = d - } - pow.mu.Unlock() - // wait for it to finish generating. - d.generate() - return d -} - -func (pow *Full) Search(block pow.Block, stop <-chan struct{}, index int) (nonce uint64, mixDigest []byte) { - dag := pow.getDAG(block.NumberU64()) - - r := rand.New(rand.NewSource(time.Now().UnixNano())) - diff := block.Difficulty() - - i := int64(0) - starti := i - start := time.Now().UnixNano() - previousHashrate := int32(0) - - nonce = uint64(r.Int63()) - hash := hashToH256(block.HashNoNonce()) - target := new(big.Int).Div(maxUint256, diff) - for { - select { - case <-stop: - atomic.AddInt32(&pow.hashRate, -previousHashrate) - return 0, nil - default: - i++ - - // we don't have to update hash rate on every nonce, so update after - // first nonce check and then after 2^X nonces - if i == 2 || ((i % (1 << 16)) == 0) { - elapsed := time.Now().UnixNano() - start - hashes := (float64(1e9) / float64(elapsed)) * float64(i-starti) - hashrateDiff := int32(hashes) - previousHashrate - previousHashrate = int32(hashes) - atomic.AddInt32(&pow.hashRate, hashrateDiff) - } - - ret := C.ethash_full_compute(dag.ptr, hash, C.uint64_t(nonce)) - result := h256ToHash(ret.result).Big() - - // TODO: disagrees with the spec https://github.com/ethereum/wiki/wiki/Ethash#mining - if ret.success && result.Cmp(target) <= 0 { - mixDigest = C.GoBytes(unsafe.Pointer(&ret.mix_hash), C.int(32)) - atomic.AddInt32(&pow.hashRate, -previousHashrate) - return nonce, mixDigest - } - nonce += 1 - } - - if !pow.turbo { - time.Sleep(20 * time.Microsecond) - } - } -} - -func (pow *Full) GetHashrate() int64 { - return int64(atomic.LoadInt32(&pow.hashRate)) -} - -func (pow *Full) Turbo(on bool) { - // TODO: this needs to use an atomic operation. - pow.turbo = on -} - -// Ethash combines block verification with Light and -// nonce searching with Full into a single proof of work. -type Ethash struct { - *Light - *Full -} - -// New creates an instance of the proof of work. -func New() *Ethash { - return &Ethash{new(Light), &Full{turbo: true}} -} - -// NewShared creates an instance of the proof of work., where a single instance -// of the Light cache is shared across all instances created with NewShared. -func NewShared() *Ethash { - return &Ethash{sharedLight, &Full{turbo: true}} -} - -// NewForTesting creates a proof of work for use in unit tests. -// It uses a smaller DAG and cache size to keep test times low. -// DAG files are stored in a temporary directory. -// -// Nonces found by a testing instance are not verifiable with a -// regular-size cache. -func NewForTesting() (*Ethash, error) { - dir, err := ioutil.TempDir("", "ethash-test") - if err != nil { - return nil, err - } - return &Ethash{&Light{test: true}, &Full{Dir: dir, test: true}}, nil -} - -func GetSeedHash(blockNum uint64) ([]byte, error) { - if blockNum >= epochLength*2048 { - return nil, fmt.Errorf("block number too high, limit is %d", epochLength*2048) - } - sh := makeSeedHash(blockNum / epochLength) - return sh[:], nil -} - -func makeSeedHash(epoch uint64) (sh common.Hash) { - for ; epoch > 0; epoch-- { - sh = crypto.Sha3Hash(sh[:]) - } - return sh -} diff --git a/vendor/github.com/ethereum/ethash/ethashc.go b/vendor/github.com/ethereum/ethash/ethashc.go deleted file mode 100644 index 1d2ba16132..0000000000 --- a/vendor/github.com/ethereum/ethash/ethashc.go +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package ethash - -/* - -mno-stack-arg-probe disables stack probing which avoids the function - __chkstk_ms being linked. this avoids a clash of this symbol as we also - separately link the secp256k1 lib which ends up defining this symbol - - 1. https://gcc.gnu.org/onlinedocs/gccint/Stack-Checking.html - 2. https://groups.google.com/forum/#!msg/golang-dev/v1bziURSQ4k/88fXuJ24e-gJ - 3. https://groups.google.com/forum/#!topic/golang-nuts/VNP6Mwz_B6o - -*/ - -/* -#cgo CFLAGS: -std=gnu99 -Wall -#cgo windows CFLAGS: -mno-stack-arg-probe -#cgo LDFLAGS: -lm - -#include "src/libethash/internal.c" -#include "src/libethash/sha3.c" -#include "src/libethash/io.c" - -#ifdef _WIN32 -# include "src/libethash/io_win32.c" -# include "src/libethash/mmap_win32.c" -#else -# include "src/libethash/io_posix.c" -#endif - -// 'gateway function' for calling back into go. -extern int ethashGoCallback(unsigned); -int ethashGoCallback_cgo(unsigned percent) { return ethashGoCallback(percent); } - -*/ -import "C" diff --git a/vendor/github.com/ethereum/ethash/setup.py b/vendor/github.com/ethereum/ethash/setup.py deleted file mode 100755 index 18aa20f6db..0000000000 --- a/vendor/github.com/ethereum/ethash/setup.py +++ /dev/null @@ -1,47 +0,0 @@ -#!/usr/bin/env python -import os -from distutils.core import setup, Extension -sources = [ - 'src/python/core.c', - 'src/libethash/io.c', - 'src/libethash/internal.c', - 'src/libethash/sha3.c'] -if os.name == 'nt': - sources += [ - 'src/libethash/util_win32.c', - 'src/libethash/io_win32.c', - 'src/libethash/mmap_win32.c', - ] -else: - sources += [ - 'src/libethash/io_posix.c' - ] -depends = [ - 'src/libethash/ethash.h', - 'src/libethash/compiler.h', - 'src/libethash/data_sizes.h', - 'src/libethash/endian.h', - 'src/libethash/ethash.h', - 'src/libethash/io.h', - 'src/libethash/fnv.h', - 'src/libethash/internal.h', - 'src/libethash/sha3.h', - 'src/libethash/util.h', -] -pyethash = Extension('pyethash', - sources=sources, - depends=depends, - extra_compile_args=["-Isrc/", "-std=gnu99", "-Wall"]) - -setup( - name='pyethash', - author="Matthew Wampler-Doty", - author_email="matthew.wampler.doty@gmail.com", - license='GPL', - version='0.1.23', - url='https://github.com/ethereum/ethash', - download_url='https://github.com/ethereum/ethash/tarball/v23', - description=('Python wrappers for ethash, the ethereum proof of work' - 'hashing function'), - ext_modules=[pyethash], -) diff --git a/vendor/vendor.json b/vendor/vendor.json index e28ab243b9..eb6d3ac626 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -34,12 +34,6 @@ "revision": "346938d642f2ec3594ed81d874461961cd0faa76", "revisionTime": "2016-10-29T20:57:26Z" }, - { - "checksumSHA1": "HdOu+ISNyVWMyBao7vDI21uZH6U=", - "path": "github.com/ethereum/ethash", - "revision": "214d4c008e101d4f7b18318389fb8c2e00323f24", - "revisionTime": "2016-10-25T09:19:48Z" - }, { "checksumSHA1": "7oFpbmDfGobwKsFLIf6wMUvVoKw=", "path": "github.com/fatih/color", From 5c8fa6ae1a42813e7aec477bd68d98f66f85e0b8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Tue, 7 Mar 2017 20:05:54 +0200 Subject: [PATCH 14/57] crypto, pow, vendor: hash optimizations, mmap ethash --- crypto/crypto.go | 36 -- pow/ethash.go | 310 ++++++++++++------ pow/ethash_algo.go | 124 +++++-- pow/ethash_algo_test.go | 136 ++++++-- vendor/github.com/edsrzf/mmap-go/LICENSE | 25 ++ vendor/github.com/edsrzf/mmap-go/README.md | 12 + vendor/github.com/edsrzf/mmap-go/mmap.go | 112 +++++++ vendor/github.com/edsrzf/mmap-go/mmap_unix.go | 67 ++++ .../github.com/edsrzf/mmap-go/mmap_windows.go | 125 +++++++ .../github.com/edsrzf/mmap-go/msync_netbsd.go | 8 + .../github.com/edsrzf/mmap-go/msync_unix.go | 14 + vendor/vendor.json | 6 + 12 files changed, 772 insertions(+), 203 deletions(-) create mode 100644 vendor/github.com/edsrzf/mmap-go/LICENSE create mode 100644 vendor/github.com/edsrzf/mmap-go/README.md create mode 100644 vendor/github.com/edsrzf/mmap-go/mmap.go create mode 100644 vendor/github.com/edsrzf/mmap-go/mmap_unix.go create mode 100644 vendor/github.com/edsrzf/mmap-go/mmap_windows.go create mode 100644 vendor/github.com/edsrzf/mmap-go/msync_netbsd.go create mode 100644 vendor/github.com/edsrzf/mmap-go/msync_unix.go diff --git a/crypto/crypto.go b/crypto/crypto.go index a60a4617ee..0b8c06008e 100644 --- a/crypto/crypto.go +++ b/crypto/crypto.go @@ -37,10 +37,6 @@ var ( secp256k1_halfN = new(big.Int).Div(secp256k1_N, big.NewInt(2)) ) -// Hasher is a repetitive hasher allowing the same hash data structures to be -// reused between hash runs instead of requiring new ones to be created. -type Hasher func(data []byte) []byte - // Keccak256 calculates and returns the Keccak256 hash of the input data. func Keccak256(data ...[]byte) []byte { d := sha3.NewKeccak256() @@ -61,22 +57,6 @@ func Keccak256Hash(data ...[]byte) (h common.Hash) { return h } -// Keccak256Hasher creates a repetitive Keccak256 hasher, allowing the same hash -// data structures to be reused between hash runs instead of requiring new ones -// to be created. -// -// The returned function is not thread safe! -func Keccak256Hasher() Hasher { - hasher := sha3.NewKeccak256() - - return func(data []byte) []byte { - hasher.Write(data) - result := hasher.Sum(nil) - hasher.Reset() - return result - } -} - // Keccak512 calculates and returns the Keccak512 hash of the input data. func Keccak512(data ...[]byte) []byte { d := sha3.NewKeccak512() @@ -86,22 +66,6 @@ func Keccak512(data ...[]byte) []byte { return d.Sum(nil) } -// Keccak512Hasher creates a repetitive Keccak512 hasher, allowing the same hash -// data structures to be reused between hash runs instead of requiring new ones -// to be created. -// -// The returned function is not thread safe! -func Keccak512Hasher() Hasher { - hasher := sha3.NewKeccak512() - - return func(data []byte) []byte { - hasher.Write(data) - result := hasher.Sum(nil) - hasher.Reset() - return result - } -} - // Deprecated: For backward compatibility as other packages depend on these func Sha3Hash(data ...[]byte) common.Hash { return Keccak256Hash(data...) } diff --git a/pow/ethash.go b/pow/ethash.go index 0af1904b60..dbe8ff0779 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -17,20 +17,21 @@ package pow import ( - "bufio" "bytes" "errors" "fmt" - "io/ioutil" "math" "math/big" "math/rand" "os" "path/filepath" + "reflect" + "strconv" "sync" "time" + "unsafe" - "github.com/ethereum/go-ethereum/common" + mmap "github.com/edsrzf/mmap-go" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/log" metrics "github.com/rcrowley/go-metrics" @@ -57,10 +58,89 @@ var ( dumpMagic = hexutil.MustDecode("0xfee1deadbaddcafe") ) +// isLittleEndian returns whether the local system is running in little or big +// endian byte order. +func isLittleEndian() bool { + n := uint32(0x01020304) + return *(*byte)(unsafe.Pointer(&n)) == 0x04 +} + +// memoryMap tries to memory map a file of uint32s for read only access. +func memoryMap(path string) (*os.File, mmap.MMap, []uint32, error) { + file, err := os.OpenFile(path, os.O_RDONLY, 0644) + if err != nil { + return nil, nil, nil, err + } + mem, buffer, err := memoryMapFile(file, false) + if err != nil { + file.Close() + return nil, nil, nil, err + } + return file, mem, buffer, err +} + +// memoryMapFile tries to memory map an already opened file descriptor. +func memoryMapFile(file *os.File, write bool) (mmap.MMap, []uint32, error) { + // Try to memory map the file + flag := mmap.RDONLY + if write { + flag = mmap.RDWR + } + mem, err := mmap.Map(file, flag, 0) + if err != nil { + return nil, nil, err + } + // Yay, we managed to memory map the file, here be dragons + header := *(*reflect.SliceHeader)(unsafe.Pointer(&mem)) + header.Len /= 4 + header.Cap /= 4 + + return mem, *(*[]uint32)(unsafe.Pointer(&header)), nil +} + +// memoryMapAndGenerate tries to memory map a temporary file of uint32s for write +// access, fill it with the data from a generator and then move it into the final +// path requested. +func memoryMapAndGenerate(path string, size uint64, generator func(buffer []uint32)) (*os.File, mmap.MMap, []uint32, error) { + // Ensure the data folder exists + if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil { + return nil, nil, nil, err + } + // Create a huge temporary empty file to fill with data + temp := path + "." + strconv.Itoa(rand.Int()) + + dump, err := os.Create(temp) + if err != nil { + return nil, nil, nil, err + } + if err = dump.Truncate(int64(size)); err != nil { + return nil, nil, nil, err + } + // Memory map the file for writing and fill it with the generator + mem, buffer, err := memoryMapFile(dump, true) + if err != nil { + dump.Close() + return nil, nil, nil, err + } + generator(buffer) + + if err := mem.Flush(); err != nil { + mem.Unmap() + dump.Close() + return nil, nil, nil, err + } + os.Rename(temp, path) + return dump, mem, buffer, nil +} + // cache wraps an ethash cache with some metadata to allow easier concurrent use. type cache struct { - epoch uint64 // Epoch for which this cache is relevant - cache []uint32 // The actual cache data content + epoch uint64 // Epoch for which this cache is relevant + + dump *os.File // File descriptor of the memory mapped cache + mmap mmap.MMap // Memory map itself to unmap before releasing + + cache []uint32 // The actual cache data content (may be memory mapped) used time.Time // Timestamp of the last use for smarter eviction once sync.Once // Ensures the cache is generated only once lock sync.Mutex // Ensures thread safety for updating the usage time @@ -71,57 +151,72 @@ func (c *cache) generate(dir string, limit int, test bool) { c.once.Do(func() { // If we have a testing cache, generate and return if test { - rawCache := generateCache(1024, seedHash(c.epoch*epochLength+1)) - c.cache = prepare(1024, bytes.NewReader(rawCache)) + c.cache = make([]uint32, 1024/4) + generateCache(c.cache, c.epoch, seedHash(c.epoch*epochLength+1)) return } - // Full cache generation is needed, check cache dir for existing data + // If we don't store anything on disk, generate and return size := cacheSize(c.epoch*epochLength + 1) seed := seedHash(c.epoch*epochLength + 1) - path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x", algorithmRevision, seed)) - logger := log.New("seed", hexutil.Bytes(seed)) - - if dir != "" { - dump, err := os.Open(path) - if err == nil { - logger.Info("Loading ethash cache from disk") - start := time.Now() - c.cache = prepare(size, bufio.NewReader(dump)) - logger.Info("Loaded ethash cache from disk", "elapsed", common.PrettyDuration(time.Since(start))) - - dump.Close() - return - } + if dir == "" { + c.cache = make([]uint32, size/4) + generateCache(c.cache, c.epoch, seed) + return } - // No previous disk cache was available, generate on the fly - rawCache := generateCache(size, seed) - c.cache = prepare(size, bytes.NewReader(rawCache)) + // Disk storage is needed, this will get fancy + endian := "le" + if !isLittleEndian() { + endian = "be" + } + path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x.%s", algorithmRevision, seed, endian)) + logger := log.New("epoch", c.epoch) - // If a cache directory is given, attempt to serialize for next time - if dir != "" { - // Store the ethash cache to disk - start := time.Now() - if err := os.MkdirAll(filepath.Dir(path), os.ModePerm); err != nil { - logger.Error("Failed to create ethash cache dir", "err", err) - } else if err := ioutil.WriteFile(path, rawCache, os.ModePerm); err != nil { - logger.Error("Failed to write ethash cache to disk", "err", err) - } else { - logger.Info("Stored ethash cache to disk", "elapsed", common.PrettyDuration(time.Since(start))) - } - // Iterate over all previous instances and delete old ones - for ep := int(c.epoch) - limit; ep >= 0; ep-- { - seed := seedHash(uint64(ep)*epochLength + 1) - path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x", algorithmRevision, seed)) - os.Remove(path) - } + // Try to load the file from disk and memory map it + var err error + c.dump, c.mmap, c.cache, err = memoryMap(path) + if err == nil { + logger.Debug("Loaded old ethash cache from disk") + return + } + logger.Debug("Failed to load old ethash cache", "err", err) + + // No previous cache available, create a new cache file to fill + c.dump, c.mmap, c.cache, err = memoryMapAndGenerate(path, size, func(buffer []uint32) { generateCache(buffer, c.epoch, seed) }) + if err != nil { + logger.Error("Failed to generate mapped ethash cache", "err", err) + + c.cache = make([]uint32, size/4) + generateCache(c.cache, c.epoch, seed) + } + // Iterate over all previous instances and delete old ones + for ep := int(c.epoch) - limit; ep >= 0; ep-- { + seed := seedHash(uint64(ep)*epochLength + 1) + path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x.%s", algorithmRevision, seed, endian)) + os.Remove(path) } }) } +// release closes any file handlers and memory maps open. +func (c *cache) release() { + if c.mmap != nil { + c.mmap.Unmap() + c.mmap = nil + } + if c.dump != nil { + c.dump.Close() + c.dump = nil + } +} + // dataset wraps an ethash dataset with some metadata to allow easier concurrent use. type dataset struct { - epoch uint64 // Epoch for which this cache is relevant + epoch uint64 // Epoch for which this cache is relevant + + dump *os.File // File descriptor of the memory mapped cache + mmap mmap.MMap // Memory map itself to unmap before releasing + dataset []uint32 // The actual cache data content used time.Time // Timestamp of the last use for smarter eviction once sync.Once // Ensures the cache is generated only once @@ -129,78 +224,91 @@ type dataset struct { } // generate ensures that the dataset content is generated before use. -func (d *dataset) generate(dir string, limit int, test bool, discard bool) { +func (d *dataset) generate(dir string, limit int, test bool) { d.once.Do(func() { // If we have a testing dataset, generate and return if test { - rawCache := generateCache(1024, seedHash(d.epoch*epochLength+1)) - intCache := prepare(1024, bytes.NewReader(rawCache)) + cache := make([]uint32, 1024/4) + generateCache(cache, d.epoch, seedHash(d.epoch*epochLength+1)) - rawDataset := generateDataset(32*1024, intCache) - d.dataset = prepare(32*1024, bytes.NewReader(rawDataset)) + d.dataset = make([]uint32, 32*1024/4) + generateDataset(d.dataset, d.epoch, cache) return } - // Full dataset generation is needed, check dataset dir for existing data + // If we don't store anything on disk, generate and return csize := cacheSize(d.epoch*epochLength + 1) dsize := datasetSize(d.epoch*epochLength + 1) seed := seedHash(d.epoch*epochLength + 1) - path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x", algorithmRevision, seed)) - logger := log.New("seed", hexutil.Bytes(seed)) + if dir == "" { + cache := make([]uint32, csize/4) + generateCache(cache, d.epoch, seed) - if dir != "" { - dump, err := os.Open(path) - if err == nil { - if !discard { - logger.Info("Loading ethash DAG from disk") - start := time.Now() - d.dataset = prepare(dsize, bufio.NewReader(dump)) - logger.Info("Loaded ethash DAG from disk", "elapsed", common.PrettyDuration(time.Since(start))) - } - dump.Close() - return - } + d.dataset = make([]uint32, dsize/4) + generateDataset(d.dataset, d.epoch, cache) } - // No previous disk dataset was available, generate on the fly - rawCache := generateCache(csize, seed) - intCache := prepare(csize, bytes.NewReader(rawCache)) + // Disk storage is needed, this will get fancy + endian := "le" + if !isLittleEndian() { + endian = "be" + } + path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x.%s", algorithmRevision, seed, endian)) + logger := log.New("epoch", d.epoch) - rawDataset := generateDataset(dsize, intCache) - if !discard { - d.dataset = prepare(dsize, bytes.NewReader(rawDataset)) + // Try to load the file from disk and memory map it + var err error + d.dump, d.mmap, d.dataset, err = memoryMap(path) + if err == nil { + logger.Debug("Loaded old ethash dataset from disk") + return } - // If a dataset directory is given, attempt to serialize for next time - if dir != "" { - // Store the ethash dataset to disk - start := time.Now() - if err := os.MkdirAll(filepath.Dir(path), os.ModePerm); err != nil { - logger.Error("Failed to create ethash DAG dir", "err", err) - } else if err := ioutil.WriteFile(path, rawDataset, os.ModePerm); err != nil { - logger.Error("Failed to write ethash DAG to disk", "err", err) - } else { - logger.Info("Stored ethash DAG to disk", "elapsed", common.PrettyDuration(time.Since(start))) - } - // Iterate over all previous instances and delete old ones - for ep := int(d.epoch) - limit; ep >= 0; ep-- { - seed := seedHash(uint64(ep)*epochLength + 1) - path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x", algorithmRevision, seed)) - os.Remove(path) - } + logger.Debug("Failed to load old ethash dataset", "err", err) + + // No previous dataset available, create a new dataset file to fill + cache := make([]uint32, csize/4) + generateCache(cache, d.epoch, seed) + + d.dump, d.mmap, d.dataset, err = memoryMapAndGenerate(path, dsize, func(buffer []uint32) { generateDataset(buffer, d.epoch, cache) }) + if err != nil { + logger.Error("Failed to generate mapped ethash dataset", "err", err) + + d.dataset = make([]uint32, dsize/2) + generateDataset(d.dataset, d.epoch, cache) + } + // Iterate over all previous instances and delete old ones + for ep := int(d.epoch) - limit; ep >= 0; ep-- { + seed := seedHash(uint64(ep)*epochLength + 1) + path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x.%s", algorithmRevision, seed, endian)) + os.Remove(path) } }) } +// release closes any file handlers and memory maps open. +func (d *dataset) release() { + if d.mmap != nil { + d.mmap.Unmap() + d.mmap = nil + } + if d.dump != nil { + d.dump.Close() + d.dump = nil + } +} + // MakeCache generates a new ethash cache and optionally stores it to disk. func MakeCache(block uint64, dir string) { c := cache{epoch: block/epochLength + 1} c.generate(dir, math.MaxInt32, false) + c.release() } // MakeDataset generates a new ethash dataset and optionally stores it to disk. func MakeDataset(block uint64, dir string) { d := dataset{epoch: block/epochLength + 1} - d.generate(dir, math.MaxInt32, false, true) + d.generate(dir, math.MaxInt32, false) + d.release() } // Ethash is a PoW data struture implementing the ethash algorithm. @@ -318,22 +426,26 @@ func (ethash *Ethash) cache(block uint64) []uint32 { } } delete(ethash.caches, evict.epoch) + evict.release() - log.Debug("Evicted ethash cache", "epoch", evict.epoch, "used", evict.used) + log.Trace("Evicted ethash cache", "epoch", evict.epoch, "used", evict.used) } // If we have the new cache pre-generated, use that, otherwise create a new one if ethash.fcache != nil && ethash.fcache.epoch == epoch { - log.Debug("Using pre-generated cache", "epoch", epoch) + log.Trace("Using pre-generated cache", "epoch", epoch) current, ethash.fcache = ethash.fcache, nil } else { - log.Debug("Requiring new ethash cache", "epoch", epoch) + log.Trace("Requiring new ethash cache", "epoch", epoch) current = &cache{epoch: epoch} } ethash.caches[epoch] = current // If we just used up the future cache, or need a refresh, regenerate if ethash.fcache == nil || ethash.fcache.epoch <= epoch { - log.Debug("Requiring new future ethash cache", "epoch", epoch+1) + if ethash.fcache != nil { + ethash.fcache.release() + } + log.Trace("Requiring new future ethash cache", "epoch", epoch+1) future = &cache{epoch: epoch + 1} ethash.fcache = future } @@ -418,23 +530,27 @@ func (ethash *Ethash) dataset(block uint64) []uint32 { } } delete(ethash.datasets, evict.epoch) + evict.release() - log.Debug("Evicted ethash dataset", "epoch", evict.epoch, "used", evict.used) + log.Trace("Evicted ethash dataset", "epoch", evict.epoch, "used", evict.used) } // If we have the new cache pre-generated, use that, otherwise create a new one if ethash.fdataset != nil && ethash.fdataset.epoch == epoch { - log.Debug("Using pre-generated dataset", "epoch", epoch) + log.Trace("Using pre-generated dataset", "epoch", epoch) current = &dataset{epoch: ethash.fdataset.epoch} // Reload from disk ethash.fdataset = nil } else { - log.Debug("Requiring new ethash dataset", "epoch", epoch) + log.Trace("Requiring new ethash dataset", "epoch", epoch) current = &dataset{epoch: epoch} } ethash.datasets[epoch] = current // If we just used up the future dataset, or need a refresh, regenerate if ethash.fdataset == nil || ethash.fdataset.epoch <= epoch { - log.Debug("Requiring new future ethash dataset", "epoch", epoch+1) + if ethash.fdataset != nil { + ethash.fdataset.release() + } + log.Trace("Requiring new future ethash dataset", "epoch", epoch+1) future = &dataset{epoch: epoch + 1} ethash.fdataset = future } @@ -443,7 +559,7 @@ func (ethash *Ethash) dataset(block uint64) []uint32 { ethash.lock.Unlock() // Wait for generation finish, bump the timestamp and finalize the cache - current.generate(ethash.dagdir, ethash.dagsondisk, ethash.tester, false) + current.generate(ethash.dagdir, ethash.dagsondisk, ethash.tester) current.lock.Lock() current.used = time.Now() @@ -451,7 +567,7 @@ func (ethash *Ethash) dataset(block uint64) []uint32 { // If we exhausted the future dataset, now's a good time to regenerate it if future != nil { - go future.generate(ethash.dagdir, ethash.dagsondisk, ethash.tester, true) // Discard results from memorys + go future.generate(ethash.dagdir, ethash.dagsondisk, ethash.tester) } return current.dataset } diff --git a/pow/ethash_algo.go b/pow/ethash_algo.go index d3fac8d5be..ace482b937 100644 --- a/pow/ethash_algo.go +++ b/pow/ethash_algo.go @@ -18,15 +18,17 @@ package pow import ( "encoding/binary" - "io" + "hash" + "reflect" "runtime" "sync" "sync/atomic" "time" + "unsafe" "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/crypto/sha3" "github.com/ethereum/go-ethereum/log" ) @@ -44,6 +46,22 @@ const ( loopAccesses = 64 // Number of accesses in hashimoto loop ) +// hasher is a repetitive hasher allowing the same hash data structures to be +// reused between hash runs instead of requiring new ones to be created. +type hasher func(dest []byte, data []byte) + +// makeHasher creates a repetitive hasher, allowing the same hash data structures +// to be reused between hash runs instead of requiring new ones to be created. +// +// The returned function is not thread safe! +func makeHasher(h hash.Hash) hasher { + return func(dest []byte, data []byte) { + h.Write(data) + h.Sum(dest[:0]) + h.Reset() + } +} + // seedHash is the seed to use for generating a verification cache and the mining // dataset. func seedHash(block uint64) []byte { @@ -51,9 +69,9 @@ func seedHash(block uint64) []byte { if block < epochLength { return seed } - keccak256 := crypto.Keccak256Hasher() + keccak256 := makeHasher(sha3.NewKeccak256()) for i := 0; i < int(block/epochLength); i++ { - seed = keccak256(seed) + keccak256(seed, seed) } return seed } @@ -63,17 +81,30 @@ func seedHash(block uint64) []byte { // memory, then performing two passes of Sergio Demian Lerner's RandMemoHash // algorithm from Strict Memory Hard Hashing Functions (2014). The output is a // set of 524288 64-byte values. -func generateCache(size uint64, seed []byte) []byte { +// +// This method places the result into dest in machine byte order. +func generateCache(dest []uint32, epoch uint64, seed []byte) { // Print some debug logs to allow analysis on low end devices - logger := log.New("seed", hexutil.Bytes(seed)) - logger.Debug("Generating ethash verification cache") + logger := log.New("epoch", epoch) start := time.Now() defer func() { - logger.Info("Generated ethash verification cache", "elapsed", common.PrettyDuration(time.Since(start))) + elapsed := time.Since(start) + + logFn := logger.Debug + if elapsed > 3*time.Second { + logFn = logger.Info + } + logFn("Generated ethash verification cache", "elapsed", common.PrettyDuration(elapsed)) }() + // Convert our destination slice to a byte buffer + header := *(*reflect.SliceHeader)(unsafe.Pointer(&dest)) + header.Len *= 4 + header.Cap *= 4 + cache := *(*[]byte)(unsafe.Pointer(&header)) // Calculate the number of thoretical rows (we'll store in one buffer nonetheless) + size := uint64(len(cache)) rows := int(size) / hashBytes // Start a monitoring goroutine to report progress on low end devices @@ -93,13 +124,12 @@ func generateCache(size uint64, seed []byte) []byte { } }() // Create a hasher to reuse between invocations - keccak512 := crypto.Keccak512Hasher() + keccak512 := makeHasher(sha3.NewKeccak512()) // Sequentially produce the initial dataset - cache := make([]byte, size) - copy(cache, keccak512(seed)) + keccak512(cache, seed) for offset := uint64(hashBytes); offset < size; offset += hashBytes { - copy(cache[offset:], keccak512(cache[offset-hashBytes:offset])) + keccak512(cache[offset:], cache[offset-hashBytes:offset]) atomic.AddUint32(&progress, 1) } // Use a low-round version of randmemohash @@ -113,26 +143,31 @@ func generateCache(size uint64, seed []byte) []byte { xorOff = (binary.LittleEndian.Uint32(cache[dstOff:]) % uint32(rows)) * hashBytes ) xorBytes(temp, cache[srcOff:srcOff+hashBytes], cache[xorOff:xorOff+hashBytes]) - copy(cache[dstOff:], keccak512(temp)) + keccak512(cache[dstOff:], temp) atomic.AddUint32(&progress, 1) } } - return cache + // Swap the byte order on big endian systems and return + if !isLittleEndian() { + swap(cache) + } +} + +// swap changes the byte order of the buffer assuming a uint32 representation. +func swap(buffer []byte) { + for i := 0; i < len(buffer); i += 4 { + binary.BigEndian.PutUint32(buffer[i:], binary.LittleEndian.Uint32(buffer[i:])) + } } // prepare converts an ethash cache or dataset from a byte stream into the internal // int representation. All ethash methods work with ints to avoid constant byte to // int conversions as well as to handle both little and big endian systems. -func prepare(size uint64, r io.Reader) []uint32 { - ints := make([]uint32, size/4) - - buffer := make([]byte, 4) - for i := 0; i < len(ints); i++ { - io.ReadFull(r, buffer) - ints[i] = binary.LittleEndian.Uint32(buffer) +func prepare(dest []uint32, src []byte) { + for i := 0; i < len(dest); i++ { + dest[i] = binary.LittleEndian.Uint32(src[i*4:]) } - return ints } // fnv is an algorithm inspired by the FNV hash, which in some cases is used as @@ -152,7 +187,7 @@ func fnvHash(mix []uint32, data []uint32) { // generateDatasetItem combines data from 256 pseudorandomly selected cache nodes, // and hashes that to compute a single dataset node. -func generateDatasetItem(cache []uint32, index uint32, keccak512 crypto.Hasher) []byte { +func generateDatasetItem(cache []uint32, index uint32, keccak512 hasher) []byte { // Calculate the number of thoretical rows (we use one buffer nonetheless) rows := uint32(len(cache) / hashWords) @@ -163,7 +198,7 @@ func generateDatasetItem(cache []uint32, index uint32, keccak512 crypto.Hasher) for i := 1; i < hashWords; i++ { binary.LittleEndian.PutUint32(mix[i*4:], cache[(index%rows)*hashWords+uint32(i)]) } - mix = keccak512(mix) + keccak512(mix, mix) // Convert the mix to uint32s to avoid constant bit shifting intMix := make([]uint32, hashWords) @@ -179,22 +214,39 @@ func generateDatasetItem(cache []uint32, index uint32, keccak512 crypto.Hasher) for i, val := range intMix { binary.LittleEndian.PutUint32(mix[i*4:], val) } - return keccak512(mix) + keccak512(mix, mix) + return mix } // generateDataset generates the entire ethash dataset for mining. -func generateDataset(size uint64, cache []uint32) []byte { +// +// This method places the result into dest in machine byte order. +func generateDataset(dest []uint32, epoch uint64, cache []uint32) { // Print some debug logs to allow analysis on low end devices - logger := log.New("size", size) - logger.Debug("Generating ethash dataset") + logger := log.New("epoch", epoch) defer func(start time.Time) { - logger.Debug("Generated ethash dataset", "elapsed", common.PrettyDuration(time.Since(start))) + elapsed := time.Since(start) + + logFn := logger.Debug + if elapsed > 3*time.Second { + logFn = logger.Info + } + logFn("Generated ethash verification cache", "elapsed", common.PrettyDuration(elapsed)) }(time.Now()) + // Figure out whether the bytes need to be swapped for the machine + swapped := !isLittleEndian() + + // Convert our destination slice to a byte buffer + header := *(*reflect.SliceHeader)(unsafe.Pointer(&dest)) + header.Len *= 4 + header.Cap *= 4 + dataset := *(*[]byte)(unsafe.Pointer(&header)) + // Generate the dataset on many goroutines since it takes a while - dataset := make([]byte, size) threads := runtime.NumCPU() + size := uint64(len(dataset)) var pend sync.WaitGroup pend.Add(threads) @@ -205,7 +257,7 @@ func generateDataset(size uint64, cache []uint32) []byte { defer pend.Done() // Create a hasher to reuse between invocations - keccak512 := crypto.Keccak512Hasher() + keccak512 := makeHasher(sha3.NewKeccak512()) // Calculate the data segment this thread should generate batch := uint32(size / hashBytes / uint64(threads)) @@ -217,7 +269,11 @@ func generateDataset(size uint64, cache []uint32) []byte { // Calculate the dataset segment percent := uint32(size / hashBytes / 100) for index := start; index < limit; index++ { - copy(dataset[index*hashBytes:], generateDatasetItem(cache, index, keccak512)) + item := generateDatasetItem(cache, index, keccak512) + if swapped { + swap(item) + } + copy(dataset[index*hashBytes:], item) if status := atomic.AddUint32(&progress, 1); status%percent == 0 { logger.Info("Generating DAG in progress", "percentage", uint64(status*100)/(size/hashBytes)) @@ -227,8 +283,6 @@ func generateDataset(size uint64, cache []uint32) []byte { } // Wait for all the generators to finish and return pend.Wait() - - return dataset } // hashimoto aggregates data from the full dataset in order to produce our final @@ -277,7 +331,7 @@ func hashimoto(hash []byte, nonce uint64, size uint64, lookup func(index uint32) // in-memory cache) in order to produce our final value for a particular header // hash and nonce. func hashimotoLight(size uint64, cache []uint32, hash []byte, nonce uint64) ([]byte, []byte) { - keccak512 := crypto.Keccak512Hasher() + keccak512 := makeHasher(sha3.NewKeccak512()) lookup := func(index uint32) []uint32 { rawData := generateDatasetItem(cache, index, keccak512) diff --git a/pow/ethash_algo_test.go b/pow/ethash_algo_test.go index 32e115db95..c881874ffb 100644 --- a/pow/ethash_algo_test.go +++ b/pow/ethash_algo_test.go @@ -18,21 +18,28 @@ package pow import ( "bytes" + "io/ioutil" + "math/big" + "os" + "reflect" + "sync" "testing" + "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/core/types" ) // Tests that verification caches can be correctly generated. func TestCacheGeneration(t *testing.T) { tests := []struct { size uint64 - seed []byte + epoch uint64 cache []byte }{ { - size: 1024, - seed: make([]byte, 32), + size: 1024, + epoch: 0, cache: hexutil.MustDecode("0x" + "7ce2991c951f7bf4c4c1bb119887ee07871eb5339d7b97b8588e85c742de90e5bafd5bbe6ce93a134fb6be9ad3e30db99d9528a2ea7846833f52e9ca119b6b54" + "8979480c46e19972bd0738779c932c1b43e665a2fd3122fc3ddb2691f353ceb0ed3e38b8f51fd55b6940290743563c9f8fa8822e611924657501a12aafab8a8d" + @@ -52,8 +59,8 @@ func TestCacheGeneration(t *testing.T) { "845f64fd8324bb85312979dead74f764c9677aab89801ad4f927f1c00f12e28f22422bb44200d1969d9ab377dd6b099dc6dbc3222e9321b2c1e84f8e2f07731c"), }, { - size: 1024, - seed: hexutil.MustDecode("0x290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563"), + size: 1024, + epoch: 1, cache: hexutil.MustDecode("0x" + "1f56855d59cc5a085720899b4377a0198f1abe948d85fe5820dc0e346b7c0931b9cde8e541d751de3b2b3275d0aabfae316209d5879297d8bd99f8a033c9d4df" + "35add1029f4e6404a022d504fb8023e42989aba985a65933b0109c7218854356f9284983c9e7de97de591828ae348b63d1fc78d8db58157344d4e06530ffd422" + @@ -74,22 +81,28 @@ func TestCacheGeneration(t *testing.T) { }, } for i, tt := range tests { - if cache := generateCache(tt.size, tt.seed); !bytes.Equal(cache, tt.cache) { - t.Errorf("cache %d: content mismatch: have %x, want %x", i, cache, tt.cache) + cache := make([]uint32, tt.size/4) + generateCache(cache, tt.epoch, seedHash(tt.epoch*epochLength+1)) + + want := make([]uint32, tt.size/4) + prepare(want, tt.cache) + + if !reflect.DeepEqual(cache, want) { + t.Errorf("cache %d: content mismatch: have %x, want %x", i, cache, want) } } } func TestDatasetGeneration(t *testing.T) { tests := []struct { + epoch uint64 cacheSize uint64 - cacheSeed []byte datasetSize uint64 dataset []byte }{ { + epoch: 0, cacheSize: 1024, - cacheSeed: make([]byte, 32), datasetSize: 32 * 1024, dataset: hexutil.MustDecode("0x" + "4bc09fbd530a041dd2ec296110a29e8f130f179c59d223f51ecce3126e8b0c74326abc2f32ccd9d7f976bd0944e3ccf8479db39343cbbffa467046ca97e2da63" + @@ -608,11 +621,17 @@ func TestDatasetGeneration(t *testing.T) { }, } for i, tt := range tests { - rawCache := generateCache(tt.cacheSize, tt.cacheSeed) - cache := prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + cache := make([]uint32, tt.cacheSize/4) + generateCache(cache, tt.epoch, seedHash(tt.epoch*epochLength+1)) - if dataset := generateDataset(tt.datasetSize, cache); !bytes.Equal(dataset, tt.dataset) { - t.Errorf("dataset %d: content mismatch: have %x, want %x", i, dataset, tt.dataset) + dataset := make([]uint32, tt.datasetSize/4) + generateDataset(dataset, tt.epoch, cache) + + want := make([]uint32, tt.datasetSize/4) + prepare(want, tt.dataset) + + if !reflect.DeepEqual(dataset, want) { + t.Errorf("dataset %d: content mismatch: have %x, want %x", i, dataset, want) } } } @@ -621,12 +640,12 @@ func TestDatasetGeneration(t *testing.T) { // datasets. func TestHashimoto(t *testing.T) { // Create the verification cache and mining dataset - var ( - rawCache = generateCache(1024, make([]byte, 32)) - cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) - rawDataset = generateDataset(32*1024, cache) - dataset = prepare(uint64(len(rawDataset)), bytes.NewReader(rawDataset)) - ) + cache := make([]uint32, 1024/4) + generateCache(cache, 0, make([]byte, 32)) + + dataset := make([]uint32, 32*1024/4) + generateDataset(dataset, 0, cache) + // Create a block to verify hash := hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") nonce := uint64(0) @@ -650,31 +669,77 @@ func TestHashimoto(t *testing.T) { } } +// Tests that caches generated on disk may be done concurrently. +func TestConcurrentDiskCacheGeneration(t *testing.T) { + // Create a temp folder to generate the caches into + cachedir, err := ioutil.TempDir("", "") + if err != nil { + t.Fatalf("Failed to create temporary cache dir: %v", err) + } + defer os.RemoveAll(cachedir) + + // Define a heavy enough block, one from mainnet should do + block := types.NewBlockWithHeader(&types.Header{ + Number: big.NewInt(3311058), + ParentHash: common.HexToHash("0xd783efa4d392943503f28438ad5830b2d5964696ffc285f338585e9fe0a37a05"), + UncleHash: common.HexToHash("0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"), + Coinbase: common.HexToAddress("0xc0ea08a2d404d3172d2add29a45be56da40e2949"), + Root: common.HexToHash("0x77d14e10470b5850332524f8cd6f69ad21f070ce92dca33ab2858300242ef2f1"), + TxHash: common.HexToHash("0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421"), + ReceiptHash: common.HexToHash("0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421"), + Difficulty: big.NewInt(167925187834220), + GasLimit: big.NewInt(4015682), + GasUsed: big.NewInt(0), + Time: big.NewInt(1488928920), + Extra: []byte("www.bw.com"), + MixDigest: common.HexToHash("0x3e140b0784516af5e5ec6730f2fb20cca22f32be399b9e4ad77d32541f798cd0"), + Nonce: types.EncodeNonce(0xf400cd0006070c49), + }) + // Simulate multiple processes sharing the same datadir + var pend sync.WaitGroup + + for i := 0; i < 3; i++ { + pend.Add(1) + + go func(idx int) { + defer pend.Done() + + ethash := NewFullEthash(cachedir, 0, 1, "", 0, 0) + if err := ethash.Verify(block); err != nil { + t.Errorf("proc %d: block verification failed: %v", idx, err) + } + }(i) + } + pend.Wait() +} + // Benchmarks the cache generation performance. func BenchmarkCacheGeneration(b *testing.B) { for i := 0; i < b.N; i++ { - generateCache(cacheSize(1), make([]byte, 32)) + cache := make([]uint32, cacheSize(1)/4) + generateCache(cache, 0, make([]byte, 32)) } } // Benchmarks the dataset (small) generation performance. func BenchmarkSmallDatasetGeneration(b *testing.B) { - rawCache := generateCache(65536, make([]byte, 32)) - cache := prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) + cache := make([]uint32, 65536/4) + generateCache(cache, 0, make([]byte, 32)) b.ResetTimer() for i := 0; i < b.N; i++ { - generateDataset(32*65536, cache) + dataset := make([]uint32, 32*65536/4) + generateDataset(dataset, 0, cache) } } // Benchmarks the light verification performance. func BenchmarkHashimotoLight(b *testing.B) { - var ( - rawCache = generateCache(cacheSize(1), make([]byte, 32)) - cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) - hash = hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") - ) + cache := make([]uint32, cacheSize(1)/4) + generateCache(cache, 0, make([]byte, 32)) + + hash := hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") + b.ResetTimer() for i := 0; i < b.N; i++ { hashimotoLight(datasetSize(1), cache, hash, 0) @@ -683,13 +748,14 @@ func BenchmarkHashimotoLight(b *testing.B) { // Benchmarks the full (small) verification performance. func BenchmarkHashimotoFullSmall(b *testing.B) { - var ( - rawCache = generateCache(65536, make([]byte, 32)) - cache = prepare(uint64(len(rawCache)), bytes.NewReader(rawCache)) - rawDataset = generateDataset(32*65536, cache) - dataset = prepare(uint64(len(rawDataset)), bytes.NewReader(rawDataset)) - hash = hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") - ) + cache := make([]uint32, 65536/4) + generateCache(cache, 0, make([]byte, 32)) + + dataset := make([]uint32, 32*65536/4) + generateDataset(dataset, 0, cache) + + hash := hexutil.MustDecode("0xc9149cc0386e689d789a1c2f3d5d169a61a6218ed30e74414dc736e442ef3d1f") + b.ResetTimer() for i := 0; i < b.N; i++ { hashimotoFull(32*65536, dataset, hash, 0) diff --git a/vendor/github.com/edsrzf/mmap-go/LICENSE b/vendor/github.com/edsrzf/mmap-go/LICENSE new file mode 100644 index 0000000000..8f05f338ac --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/LICENSE @@ -0,0 +1,25 @@ +Copyright (c) 2011, Evan Shaw +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the copyright holder nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + diff --git a/vendor/github.com/edsrzf/mmap-go/README.md b/vendor/github.com/edsrzf/mmap-go/README.md new file mode 100644 index 0000000000..4cc2bfe1c8 --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/README.md @@ -0,0 +1,12 @@ +mmap-go +======= + +mmap-go is a portable mmap package for the [Go programming language](http://golang.org). +It has been tested on Linux (386, amd64), OS X, and Windows (386). It should also +work on other Unix-like platforms, but hasn't been tested with them. I'm interested +to hear about the results. + +I haven't been able to add more features without adding significant complexity, +so mmap-go doesn't support mprotect, mincore, and maybe a few other things. +If you're running on a Unix-like platform and need some of these features, +I suggest Gustavo Niemeyer's [gommap](http://labix.org/gommap). diff --git a/vendor/github.com/edsrzf/mmap-go/mmap.go b/vendor/github.com/edsrzf/mmap-go/mmap.go new file mode 100644 index 0000000000..7bb4965ed5 --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/mmap.go @@ -0,0 +1,112 @@ +// Copyright 2011 Evan Shaw. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// This file defines the common package interface and contains a little bit of +// factored out logic. + +// Package mmap allows mapping files into memory. It tries to provide a simple, reasonably portable interface, +// but doesn't go out of its way to abstract away every little platform detail. +// This specifically means: +// * forked processes may or may not inherit mappings +// * a file's timestamp may or may not be updated by writes through mappings +// * specifying a size larger than the file's actual size can increase the file's size +// * If the mapped file is being modified by another process while your program's running, don't expect consistent results between platforms +package mmap + +import ( + "errors" + "os" + "reflect" + "unsafe" +) + +const ( + // RDONLY maps the memory read-only. + // Attempts to write to the MMap object will result in undefined behavior. + RDONLY = 0 + // RDWR maps the memory as read-write. Writes to the MMap object will update the + // underlying file. + RDWR = 1 << iota + // COPY maps the memory as copy-on-write. Writes to the MMap object will affect + // memory, but the underlying file will remain unchanged. + COPY + // If EXEC is set, the mapped memory is marked as executable. + EXEC +) + +const ( + // If the ANON flag is set, the mapped memory will not be backed by a file. + ANON = 1 << iota +) + +// MMap represents a file mapped into memory. +type MMap []byte + +// Map maps an entire file into memory. +// If ANON is set in flags, f is ignored. +func Map(f *os.File, prot, flags int) (MMap, error) { + return MapRegion(f, -1, prot, flags, 0) +} + +// MapRegion maps part of a file into memory. +// The offset parameter must be a multiple of the system's page size. +// If length < 0, the entire file will be mapped. +// If ANON is set in flags, f is ignored. +func MapRegion(f *os.File, length int, prot, flags int, offset int64) (MMap, error) { + var fd uintptr + if flags&ANON == 0 { + fd = uintptr(f.Fd()) + if length < 0 { + fi, err := f.Stat() + if err != nil { + return nil, err + } + length = int(fi.Size()) + } + } else { + if length <= 0 { + return nil, errors.New("anonymous mapping requires non-zero length") + } + fd = ^uintptr(0) + } + return mmap(length, uintptr(prot), uintptr(flags), fd, offset) +} + +func (m *MMap) header() *reflect.SliceHeader { + return (*reflect.SliceHeader)(unsafe.Pointer(m)) +} + +// Lock keeps the mapped region in physical memory, ensuring that it will not be +// swapped out. +func (m MMap) Lock() error { + dh := m.header() + return lock(dh.Data, uintptr(dh.Len)) +} + +// Unlock reverses the effect of Lock, allowing the mapped region to potentially +// be swapped out. +// If m is already unlocked, aan error will result. +func (m MMap) Unlock() error { + dh := m.header() + return unlock(dh.Data, uintptr(dh.Len)) +} + +// Flush synchronizes the mapping's contents to the file's contents on disk. +func (m MMap) Flush() error { + dh := m.header() + return flush(dh.Data, uintptr(dh.Len)) +} + +// Unmap deletes the memory mapped region, flushes any remaining changes, and sets +// m to nil. +// Trying to read or write any remaining references to m after Unmap is called will +// result in undefined behavior. +// Unmap should only be called on the slice value that was originally returned from +// a call to Map. Calling Unmap on a derived slice may cause errors. +func (m *MMap) Unmap() error { + dh := m.header() + err := unmap(dh.Data, uintptr(dh.Len)) + *m = nil + return err +} diff --git a/vendor/github.com/edsrzf/mmap-go/mmap_unix.go b/vendor/github.com/edsrzf/mmap-go/mmap_unix.go new file mode 100644 index 0000000000..4af98420d5 --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/mmap_unix.go @@ -0,0 +1,67 @@ +// Copyright 2011 Evan Shaw. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build darwin dragonfly freebsd linux openbsd solaris netbsd + +package mmap + +import ( + "syscall" +) + +func mmap(len int, inprot, inflags, fd uintptr, off int64) ([]byte, error) { + flags := syscall.MAP_SHARED + prot := syscall.PROT_READ + switch { + case inprot© != 0: + prot |= syscall.PROT_WRITE + flags = syscall.MAP_PRIVATE + case inprot&RDWR != 0: + prot |= syscall.PROT_WRITE + } + if inprot&EXEC != 0 { + prot |= syscall.PROT_EXEC + } + if inflags&ANON != 0 { + flags |= syscall.MAP_ANON + } + + b, err := syscall.Mmap(int(fd), off, len, prot, flags) + if err != nil { + return nil, err + } + return b, nil +} + +func flush(addr, len uintptr) error { + _, _, errno := syscall.Syscall(_SYS_MSYNC, addr, len, _MS_SYNC) + if errno != 0 { + return syscall.Errno(errno) + } + return nil +} + +func lock(addr, len uintptr) error { + _, _, errno := syscall.Syscall(syscall.SYS_MLOCK, addr, len, 0) + if errno != 0 { + return syscall.Errno(errno) + } + return nil +} + +func unlock(addr, len uintptr) error { + _, _, errno := syscall.Syscall(syscall.SYS_MUNLOCK, addr, len, 0) + if errno != 0 { + return syscall.Errno(errno) + } + return nil +} + +func unmap(addr, len uintptr) error { + _, _, errno := syscall.Syscall(syscall.SYS_MUNMAP, addr, len, 0) + if errno != 0 { + return syscall.Errno(errno) + } + return nil +} diff --git a/vendor/github.com/edsrzf/mmap-go/mmap_windows.go b/vendor/github.com/edsrzf/mmap-go/mmap_windows.go new file mode 100644 index 0000000000..c3d2d02d3f --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/mmap_windows.go @@ -0,0 +1,125 @@ +// Copyright 2011 Evan Shaw. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package mmap + +import ( + "errors" + "os" + "sync" + "syscall" +) + +// mmap on Windows is a two-step process. +// First, we call CreateFileMapping to get a handle. +// Then, we call MapviewToFile to get an actual pointer into memory. +// Because we want to emulate a POSIX-style mmap, we don't want to expose +// the handle -- only the pointer. We also want to return only a byte slice, +// not a struct, so it's convenient to manipulate. + +// We keep this map so that we can get back the original handle from the memory address. +var handleLock sync.Mutex +var handleMap = map[uintptr]syscall.Handle{} + +func mmap(len int, prot, flags, hfile uintptr, off int64) ([]byte, error) { + flProtect := uint32(syscall.PAGE_READONLY) + dwDesiredAccess := uint32(syscall.FILE_MAP_READ) + switch { + case prot© != 0: + flProtect = syscall.PAGE_WRITECOPY + dwDesiredAccess = syscall.FILE_MAP_COPY + case prot&RDWR != 0: + flProtect = syscall.PAGE_READWRITE + dwDesiredAccess = syscall.FILE_MAP_WRITE + } + if prot&EXEC != 0 { + flProtect <<= 4 + dwDesiredAccess |= syscall.FILE_MAP_EXECUTE + } + + // The maximum size is the area of the file, starting from 0, + // that we wish to allow to be mappable. It is the sum of + // the length the user requested, plus the offset where that length + // is starting from. This does not map the data into memory. + maxSizeHigh := uint32((off + int64(len)) >> 32) + maxSizeLow := uint32((off + int64(len)) & 0xFFFFFFFF) + // TODO: Do we need to set some security attributes? It might help portability. + h, errno := syscall.CreateFileMapping(syscall.Handle(hfile), nil, flProtect, maxSizeHigh, maxSizeLow, nil) + if h == 0 { + return nil, os.NewSyscallError("CreateFileMapping", errno) + } + + // Actually map a view of the data into memory. The view's size + // is the length the user requested. + fileOffsetHigh := uint32(off >> 32) + fileOffsetLow := uint32(off & 0xFFFFFFFF) + addr, errno := syscall.MapViewOfFile(h, dwDesiredAccess, fileOffsetHigh, fileOffsetLow, uintptr(len)) + if addr == 0 { + return nil, os.NewSyscallError("MapViewOfFile", errno) + } + handleLock.Lock() + handleMap[addr] = h + handleLock.Unlock() + + m := MMap{} + dh := m.header() + dh.Data = addr + dh.Len = len + dh.Cap = dh.Len + + return m, nil +} + +func flush(addr, len uintptr) error { + errno := syscall.FlushViewOfFile(addr, len) + if errno != nil { + return os.NewSyscallError("FlushViewOfFile", errno) + } + + handleLock.Lock() + defer handleLock.Unlock() + handle, ok := handleMap[addr] + if !ok { + // should be impossible; we would've errored above + return errors.New("unknown base address") + } + + errno = syscall.FlushFileBuffers(handle) + return os.NewSyscallError("FlushFileBuffers", errno) +} + +func lock(addr, len uintptr) error { + errno := syscall.VirtualLock(addr, len) + return os.NewSyscallError("VirtualLock", errno) +} + +func unlock(addr, len uintptr) error { + errno := syscall.VirtualUnlock(addr, len) + return os.NewSyscallError("VirtualUnlock", errno) +} + +func unmap(addr, len uintptr) error { + flush(addr, len) + // Lock the UnmapViewOfFile along with the handleMap deletion. + // As soon as we unmap the view, the OS is free to give the + // same addr to another new map. We don't want another goroutine + // to insert and remove the same addr into handleMap while + // we're trying to remove our old addr/handle pair. + handleLock.Lock() + defer handleLock.Unlock() + err := syscall.UnmapViewOfFile(addr) + if err != nil { + return err + } + + handle, ok := handleMap[addr] + if !ok { + // should be impossible; we would've errored above + return errors.New("unknown base address") + } + delete(handleMap, addr) + + e := syscall.CloseHandle(syscall.Handle(handle)) + return os.NewSyscallError("CloseHandle", e) +} diff --git a/vendor/github.com/edsrzf/mmap-go/msync_netbsd.go b/vendor/github.com/edsrzf/mmap-go/msync_netbsd.go new file mode 100644 index 0000000000..a64b003e2d --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/msync_netbsd.go @@ -0,0 +1,8 @@ +// Copyright 2011 Evan Shaw. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package mmap + +const _SYS_MSYNC = 277 +const _MS_SYNC = 0x04 diff --git a/vendor/github.com/edsrzf/mmap-go/msync_unix.go b/vendor/github.com/edsrzf/mmap-go/msync_unix.go new file mode 100644 index 0000000000..91ee5f40f1 --- /dev/null +++ b/vendor/github.com/edsrzf/mmap-go/msync_unix.go @@ -0,0 +1,14 @@ +// Copyright 2011 Evan Shaw. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build darwin dragonfly freebsd linux openbsd solaris + +package mmap + +import ( + "syscall" +) + +const _SYS_MSYNC = syscall.SYS_MSYNC +const _MS_SYNC = syscall.MS_SYNC diff --git a/vendor/vendor.json b/vendor/vendor.json index eb6d3ac626..58bbd82ff8 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -34,6 +34,12 @@ "revision": "346938d642f2ec3594ed81d874461961cd0faa76", "revisionTime": "2016-10-29T20:57:26Z" }, + { + "checksumSHA1": "zYnPsNAVm1/ViwCkN++dX2JQhBo=", + "path": "github.com/edsrzf/mmap-go", + "revision": "935e0e8a636ca4ba70b713f3e38a19e1b77739e8", + "revisionTime": "2016-05-12T03:30:02Z" + }, { "checksumSHA1": "7oFpbmDfGobwKsFLIf6wMUvVoKw=", "path": "github.com/fatih/color", From f3579f6460ed90a29cca77ffcbcd8047427b686b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Thu, 9 Mar 2017 16:09:43 +0200 Subject: [PATCH 15/57] pow: make data dumps backwards compatible, fix DAG end --- pow/ethash.go | 38 ++++++++++++++++++++++++-------------- pow/ethash_algo.go | 15 ++++++++------- 2 files changed, 32 insertions(+), 21 deletions(-) diff --git a/pow/ethash.go b/pow/ethash.go index dbe8ff0779..1e577a587e 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -32,12 +32,12 @@ import ( "unsafe" mmap "github.com/edsrzf/mmap-go" - "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/log" metrics "github.com/rcrowley/go-metrics" ) var ( + ErrInvalidDumpMagic = errors.New("invalid dump magic") ErrNonceOutOfRange = errors.New("nonce out of range") ErrInvalidDifficulty = errors.New("non-positive difficulty") ErrInvalidMixDigest = errors.New("invalid mix digest") @@ -55,7 +55,7 @@ var ( algorithmRevision = 23 // dumpMagic is a dataset dump header to sanity check a data dump. - dumpMagic = hexutil.MustDecode("0xfee1deadbaddcafe") + dumpMagic = []uint32{0xbaddcafe, 0xfee1dead} ) // isLittleEndian returns whether the local system is running in little or big @@ -76,7 +76,14 @@ func memoryMap(path string) (*os.File, mmap.MMap, []uint32, error) { file.Close() return nil, nil, nil, err } - return file, mem, buffer, err + for i, magic := range dumpMagic { + if buffer[i] != magic { + mem.Unmap() + file.Close() + return nil, nil, nil, ErrInvalidDumpMagic + } + } + return file, mem, buffer[len(dumpMagic):], err } // memoryMapFile tries to memory map an already opened file descriptor. @@ -113,7 +120,7 @@ func memoryMapAndGenerate(path string, size uint64, generator func(buffer []uint if err != nil { return nil, nil, nil, err } - if err = dump.Truncate(int64(size)); err != nil { + if err = dump.Truncate(int64(len(dumpMagic))*4 + int64(size)); err != nil { return nil, nil, nil, err } // Memory map the file for writing and fill it with the generator @@ -122,7 +129,10 @@ func memoryMapAndGenerate(path string, size uint64, generator func(buffer []uint dump.Close() return nil, nil, nil, err } - generator(buffer) + copy(buffer, dumpMagic) + + data := buffer[len(dumpMagic):] + generator(data) if err := mem.Flush(); err != nil { mem.Unmap() @@ -130,7 +140,7 @@ func memoryMapAndGenerate(path string, size uint64, generator func(buffer []uint return nil, nil, nil, err } os.Rename(temp, path) - return dump, mem, buffer, nil + return dump, mem, data, nil } // cache wraps an ethash cache with some metadata to allow easier concurrent use. @@ -165,11 +175,11 @@ func (c *cache) generate(dir string, limit int, test bool) { return } // Disk storage is needed, this will get fancy - endian := "le" + var endian string if !isLittleEndian() { - endian = "be" + endian = ".be" } - path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x.%s", algorithmRevision, seed, endian)) + path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x%s", algorithmRevision, seed[:8], endian)) logger := log.New("epoch", c.epoch) // Try to load the file from disk and memory map it @@ -192,7 +202,7 @@ func (c *cache) generate(dir string, limit int, test bool) { // Iterate over all previous instances and delete old ones for ep := int(c.epoch) - limit; ep >= 0; ep-- { seed := seedHash(uint64(ep)*epochLength + 1) - path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x.%s", algorithmRevision, seed, endian)) + path := filepath.Join(dir, fmt.Sprintf("cache-R%d-%x%s", algorithmRevision, seed[:8], endian)) os.Remove(path) } }) @@ -249,11 +259,11 @@ func (d *dataset) generate(dir string, limit int, test bool) { generateDataset(d.dataset, d.epoch, cache) } // Disk storage is needed, this will get fancy - endian := "le" + var endian string if !isLittleEndian() { - endian = "be" + endian = ".be" } - path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x.%s", algorithmRevision, seed, endian)) + path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x%s", algorithmRevision, seed[:8], endian)) logger := log.New("epoch", d.epoch) // Try to load the file from disk and memory map it @@ -279,7 +289,7 @@ func (d *dataset) generate(dir string, limit int, test bool) { // Iterate over all previous instances and delete old ones for ep := int(d.epoch) - limit; ep >= 0; ep-- { seed := seedHash(uint64(ep)*epochLength + 1) - path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x.%s", algorithmRevision, seed, endian)) + path := filepath.Join(dir, fmt.Sprintf("full-R%d-%x%s", algorithmRevision, seed[:8], endian)) os.Remove(path) } }) diff --git a/pow/ethash_algo.go b/pow/ethash_algo.go index ace482b937..3737cc5d7e 100644 --- a/pow/ethash_algo.go +++ b/pow/ethash_algo.go @@ -225,7 +225,8 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) { // Print some debug logs to allow analysis on low end devices logger := log.New("epoch", epoch) - defer func(start time.Time) { + start := time.Now() + defer func() { elapsed := time.Since(start) logFn := logger.Debug @@ -233,7 +234,7 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) { logFn = logger.Info } logFn("Generated ethash verification cache", "elapsed", common.PrettyDuration(elapsed)) - }(time.Now()) + }() // Figure out whether the bytes need to be swapped for the machine swapped := !isLittleEndian() @@ -260,15 +261,15 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) { keccak512 := makeHasher(sha3.NewKeccak512()) // Calculate the data segment this thread should generate - batch := uint32(size / hashBytes / uint64(threads)) - start := uint32(id) * batch - limit := start + batch + batch := uint32((size + hashBytes*uint64(threads) - 1) / (hashBytes * uint64(threads))) + first := uint32(id) * batch + limit := first + batch if limit > uint32(size/hashBytes) { limit = uint32(size / hashBytes) } // Calculate the dataset segment percent := uint32(size / hashBytes / 100) - for index := start; index < limit; index++ { + for index := first; index < limit; index++ { item := generateDatasetItem(cache, index, keccak512) if swapped { swap(item) @@ -276,7 +277,7 @@ func generateDataset(dest []uint32, epoch uint64, cache []uint32) { copy(dataset[index*hashBytes:], item) if status := atomic.AddUint32(&progress, 1); status%percent == 0 { - logger.Info("Generating DAG in progress", "percentage", uint64(status*100)/(size/hashBytes)) + logger.Info("Generating DAG in progress", "percentage", uint64(status*100)/(size/hashBytes), "elapsed", common.PrettyDuration(time.Since(start))) } } }(i) From 0a01f3f607f6b973fc9713bc25d5e7de22fbfe96 Mon Sep 17 00:00:00 2001 From: Zsolt Felfoldi Date: Mon, 6 Mar 2017 15:35:13 +0100 Subject: [PATCH 16/57] light: added new CHT --- light/lightchain.go | 25 ++----------------------- 1 file changed, 2 insertions(+), 23 deletions(-) diff --git a/light/lightchain.go b/light/lightchain.go index 773c0f38be..839cf99b91 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -102,31 +102,10 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux log.Warn("Wrote default ethereum genesis block") } - if bc.genesisBlock.Hash() == (common.Hash{212, 229, 103, 64, 248, 118, 174, 248, 192, 16, 184, 106, 64, 213, 245, 103, 69, 161, 24, 208, 144, 106, 52, 230, 154, 236, 140, 13, 177, 203, 143, 163}) { + if bc.genesisBlock.Hash() == params.MainNetGenesisHash { // add trusted CHT - if config.DAOForkSupport { - WriteTrustedCht(bc.chainDb, TrustedCht{ - Number: 637, - Root: common.HexToHash("01e408d9b1942f05dba1a879f3eaafe34d219edaeb8223fecf1244cc023d3e23"), - }) - } else { - WriteTrustedCht(bc.chainDb, TrustedCht{ - Number: 523, - Root: common.HexToHash("c035076523faf514038f619715de404a65398c51899b5dccca9c05b00bc79315"), - }) - } + WriteTrustedCht(bc.chainDb, TrustedCht{Number: 805, Root: common.HexToHash("85e4286fe0a730390245c49de8476977afdae0eb5530b277f62a52b12313d50f")}) log.Info("Added trusted CHT for mainnet") - } else { - if bc.genesisBlock.Hash() == (common.Hash{12, 215, 134, 162, 66, 93, 22, 241, 82, 198, 88, 49, 108, 66, 62, 108, 225, 24, 30, 21, 195, 41, 88, 38, 215, 201, 144, 76, 186, 156, 227, 3}) { - // add trusted CHT for testnet - WriteTrustedCht(bc.chainDb, TrustedCht{ - Number: 452, - Root: common.HexToHash("511da2c88e32b14cf4a4e62f7fcbb297139faebc260a4ab5eb43cce6edcba324"), - }) - log.Info("Added trusted CHT for testnet") - } else { - DeleteTrustedCht(bc.chainDb) - } } if err := bc.loadLastState(); err != nil { From 61ede86737d57f62cb09de013191fc430d1dd3a2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Thu, 16 Mar 2017 03:54:52 +0200 Subject: [PATCH 17/57] internal/ethapi: drop eth_compile (#3740) --- internal/ethapi/backend.go | 4 +- internal/ethapi/solc.go | 82 -------------------------------------- 2 files changed, 1 insertion(+), 85 deletions(-) delete mode 100644 internal/ethapi/solc.go diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go index 214214f511..e10fb14ffe 100644 --- a/internal/ethapi/backend.go +++ b/internal/ethapi/backend.go @@ -73,8 +73,7 @@ type State interface { } func GetAPIs(apiBackend Backend, solcPath string) []rpc.API { - compiler := makeCompilerAPIs(solcPath) - all := []rpc.API{ + return []rpc.API{ { Namespace: "eth", Version: "1.0", @@ -116,5 +115,4 @@ func GetAPIs(apiBackend Backend, solcPath string) []rpc.API { Public: false, }, } - return append(compiler, all...) } diff --git a/internal/ethapi/solc.go b/internal/ethapi/solc.go deleted file mode 100644 index b9acc518b6..0000000000 --- a/internal/ethapi/solc.go +++ /dev/null @@ -1,82 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package ethapi - -import ( - "sync" - - "github.com/ethereum/go-ethereum/common/compiler" - "github.com/ethereum/go-ethereum/rpc" -) - -func makeCompilerAPIs(solcPath string) []rpc.API { - c := &compilerAPI{solc: solcPath} - return []rpc.API{ - { - Namespace: "eth", - Version: "1.0", - Service: (*PublicCompilerAPI)(c), - Public: true, - }, - { - Namespace: "admin", - Version: "1.0", - Service: (*CompilerAdminAPI)(c), - Public: true, - }, - } -} - -type compilerAPI struct { - // This lock guards the solc path set through the API. - // It also ensures that only one solc process is used at - // any time. - mu sync.Mutex - solc string -} - -type CompilerAdminAPI compilerAPI - -// SetSolc sets the Solidity compiler path to be used by the node. -func (api *CompilerAdminAPI) SetSolc(path string) (string, error) { - api.mu.Lock() - defer api.mu.Unlock() - info, err := compiler.SolidityVersion(path) - if err != nil { - return "", err - } - api.solc = path - return info.FullVersion, nil -} - -type PublicCompilerAPI compilerAPI - -// CompileSolidity compiles the given solidity source. -func (api *PublicCompilerAPI) CompileSolidity(source string) (map[string]*compiler.Contract, error) { - api.mu.Lock() - defer api.mu.Unlock() - return compiler.CompileSolidityString(api.solc, source) -} - -func (api *PublicCompilerAPI) GetCompilers() ([]string, error) { - api.mu.Lock() - defer api.mu.Unlock() - if _, err := compiler.SolidityVersion(api.solc); err == nil { - return []string{"Solidity"}, nil - } - return []string{}, nil -} From 4e4e5fca541ae2c2c0bf5cde0b556fedfafa8d54 Mon Sep 17 00:00:00 2001 From: Micah Zoltu Date: Wed, 15 Mar 2017 20:34:08 -0700 Subject: [PATCH 18/57] rpc: add support for extended headers in CORS requests (#3783) Fixes #3762. Details about parameter: https://github.com/rs/cors/blob/a62a804a8a009876ca59105f7899938a1349f4b3/cors.go#L50-L54 --- rpc/http.go | 1 + swarm/api/http/server.go | 1 + 2 files changed, 2 insertions(+) diff --git a/rpc/http.go b/rpc/http.go index 7d4fe5d474..5a07702316 100644 --- a/rpc/http.go +++ b/rpc/http.go @@ -171,6 +171,7 @@ func newCorsHandler(srv *Server, corsString string) http.Handler { AllowedOrigins: allowedOrigins, AllowedMethods: []string{"POST", "GET"}, MaxAge: 600, + AllowedHeaders: []string{"*"}, }) return c.Handler(srv) } diff --git a/swarm/api/http/server.go b/swarm/api/http/server.go index a616966780..ae113750ff 100644 --- a/swarm/api/http/server.go +++ b/swarm/api/http/server.go @@ -82,6 +82,7 @@ func StartHttpServer(api *api.Api, server *Server) { AllowedOrigins: allowedOrigins, AllowedMethods: []string{"POST", "GET", "DELETE", "PATCH", "PUT"}, MaxAge: 600, + AllowedHeaders: []string{"*"}, }) hdlr := c.Handler(serveMux) From 6d038e762b2ff5785d6884f09f869c45964647aa Mon Sep 17 00:00:00 2001 From: bas-vk Date: Thu, 16 Mar 2017 12:24:22 +0100 Subject: [PATCH 19/57] accounts/abi/bind: allow client to specify sender address for call (#3782) --- accounts/abi/bind/base.go | 5 +++-- accounts/abi/bind/bind_test.go | 39 ++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+), 2 deletions(-) diff --git a/accounts/abi/bind/base.go b/accounts/abi/bind/base.go index 1f11827ddc..93362d9e9a 100644 --- a/accounts/abi/bind/base.go +++ b/accounts/abi/bind/base.go @@ -35,7 +35,8 @@ type SignerFn func(types.Signer, common.Address, *types.Transaction) (*types.Tra // CallOpts is the collection of options to fine tune a contract call request. type CallOpts struct { - Pending bool // Whether to operate on the pending state or the last known one + Pending bool // Whether to operate on the pending state or the last known one + From common.Address // Optional the sender address, otherwise the first account is used Context context.Context // Network context to support cancellation and timeouts (nil = no timeout) } @@ -108,7 +109,7 @@ func (c *BoundContract) Call(opts *CallOpts, result interface{}, method string, return err } var ( - msg = ethereum.CallMsg{To: &c.address, Data: input} + msg = ethereum.CallMsg{From: opts.From, To: &c.address, Data: input} ctx = ensureContext(opts.Context) code []byte output []byte diff --git a/accounts/abi/bind/bind_test.go b/accounts/abi/bind/bind_test.go index eb46bc081d..8ac4aa44e5 100644 --- a/accounts/abi/bind/bind_test.go +++ b/accounts/abi/bind/bind_test.go @@ -408,6 +408,45 @@ var bindTests = []struct { } `, }, + // Test that constant functions can be called from an (optional) specified address + { + `CallFrom`, + ` + contract CallFrom { + function callFrom() constant returns(address) { + return msg.sender; + } + } + `, `6060604052346000575b6086806100176000396000f300606060405263ffffffff60e060020a60003504166349f8e98281146022575b6000565b34600057602c6055565b6040805173ffffffffffffffffffffffffffffffffffffffff9092168252519081900360200190f35b335b905600a165627a7a72305820aef6b7685c0fa24ba6027e4870404a57df701473fe4107741805c19f5138417c0029`, + `[{"constant":true,"inputs":[],"name":"callFrom","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"}]`, + ` + // Generate a new random account and a funded simulator + key, _ := crypto.GenerateKey() + auth := bind.NewKeyedTransactor(key) + sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + + // Deploy a sender tester contract and execute a structured call on it + _, _, callfrom, err := DeployCallFrom(auth, sim) + if err != nil { + t.Fatalf("Failed to deploy sender contract: %v", err) + } + sim.Commit() + + if res, err := callfrom.CallFrom(nil); err != nil { + t.Errorf("Failed to call constant function: %v", err) + } else if res != (common.Address{}) { + t.Errorf("Invalid address returned, want: %x, got: %x", (common.Address{}), res) + } + + for _, addr := range []common.Address{common.Address{}, common.Address{1}, common.Address{2}} { + if res, err := callfrom.CallFrom(&bind.CallOpts{From: addr}); err != nil { + t.Fatalf("Failed to call constant function: %v", err) + } else if res != addr { + t.Fatalf("Invalid address returned, want: %x, got: %x", addr, res) + } + } + `, + }, } // Tests that packages generated by the binder can be successfully compiled and From 24dd0355a34a40b1798c9b8bd97a7332a77e2556 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Sat, 18 Mar 2017 00:55:37 +0100 Subject: [PATCH 20/57] pow: fix Search with ethash test mode The cache/dataset methods crashed with a nil pointer error if cachesinmem/dagsinmem were zero. Fix it by skipping the eviction logic if there are no caches/datasets. Search always used the regular dataset size regardless of test mode. Fix it by removing the redundant size parameter of hashimotoFull. Fixes #3784 --- pow/ethash.go | 26 ++++++++++---------------- pow/ethash_algo.go | 4 ++-- pow/ethash_algo_test.go | 15 +++++++++++++-- 3 files changed, 25 insertions(+), 20 deletions(-) diff --git a/pow/ethash.go b/pow/ethash.go index 1e577a587e..9adc38540d 100644 --- a/pow/ethash.go +++ b/pow/ethash.go @@ -428,7 +428,7 @@ func (ethash *Ethash) cache(block uint64) []uint32 { current, future := ethash.caches[epoch], (*cache)(nil) if current == nil { // No in-memory cache, evict the oldest if the cache limit was reached - for len(ethash.caches) >= ethash.cachesinmem { + for len(ethash.caches) > 0 && len(ethash.caches) >= ethash.cachesinmem { var evict *cache for _, cache := range ethash.caches { if evict == nil || evict.used.After(cache.used) { @@ -480,22 +480,16 @@ func (ethash *Ethash) cache(block uint64) []uint32 { // Search implements PoW, attempting to find a nonce that satisfies the block's // difficulty requirements. func (ethash *Ethash) Search(block Block, stop <-chan struct{}) (uint64, []byte) { - // Extract some data from the block - var ( - hash = block.HashNoNonce().Bytes() - diff = block.Difficulty() - target = new(big.Int).Div(maxUint256, diff) - ) - // Retrieve the mining dataset - dataset, size := ethash.dataset(block.NumberU64()), datasetSize(block.NumberU64()) - - // Start generating random nonces until we abort or find a good one var ( + hash = block.HashNoNonce().Bytes() + diff = block.Difficulty() + target = new(big.Int).Div(maxUint256, diff) + dataset = ethash.dataset(block.NumberU64()) + rand = rand.New(rand.NewSource(time.Now().UnixNano())) + nonce = uint64(rand.Int63()) attempts int64 - - rand = rand.New(rand.NewSource(time.Now().UnixNano())) - nonce = uint64(rand.Int63()) ) + // Start generating random nonces until we abort or find a good one for { select { case <-stop: @@ -511,7 +505,7 @@ func (ethash *Ethash) Search(block Block, stop <-chan struct{}) (uint64, []byte) attempts = 0 } // Compute the PoW value of this nonce - digest, result := hashimotoFull(size, dataset, hash, nonce) + digest, result := hashimotoFull(dataset, hash, nonce) if new(big.Int).SetBytes(result).Cmp(target) <= 0 { return nonce, digest } @@ -532,7 +526,7 @@ func (ethash *Ethash) dataset(block uint64) []uint32 { current, future := ethash.datasets[epoch], (*dataset)(nil) if current == nil { // No in-memory dataset, evict the oldest if the dataset limit was reached - for len(ethash.datasets) >= ethash.dagsinmem { + for len(ethash.datasets) > 0 && len(ethash.datasets) >= ethash.dagsinmem { var evict *dataset for _, dataset := range ethash.datasets { if evict == nil || evict.used.After(dataset.used) { diff --git a/pow/ethash_algo.go b/pow/ethash_algo.go index 3737cc5d7e..1e996785ff 100644 --- a/pow/ethash_algo.go +++ b/pow/ethash_algo.go @@ -349,12 +349,12 @@ func hashimotoLight(size uint64, cache []uint32, hash []byte, nonce uint64) ([]b // hashimotoFull aggregates data from the full dataset (using the full in-memory // dataset) in order to produce our final value for a particular header hash and // nonce. -func hashimotoFull(size uint64, dataset []uint32, hash []byte, nonce uint64) ([]byte, []byte) { +func hashimotoFull(dataset []uint32, hash []byte, nonce uint64) ([]byte, []byte) { lookup := func(index uint32) []uint32 { offset := index * hashWords return dataset[offset : offset+hashWords] } - return hashimoto(hash, nonce, size, lookup) + return hashimoto(hash, nonce, uint64(len(dataset))*4, lookup) } // datasetSizes is a lookup table for the ethash dataset size for the first 2048 diff --git a/pow/ethash_algo_test.go b/pow/ethash_algo_test.go index c881874ffb..0605d70ad7 100644 --- a/pow/ethash_algo_test.go +++ b/pow/ethash_algo_test.go @@ -660,7 +660,7 @@ func TestHashimoto(t *testing.T) { if !bytes.Equal(result, wantResult) { t.Errorf("light hashimoto result mismatch: have %x, want %x", result, wantResult) } - digest, result = hashimotoFull(32*1024, dataset, hash, nonce) + digest, result = hashimotoFull(dataset, hash, nonce) if !bytes.Equal(digest, wantDigest) { t.Errorf("full hashimoto digest mismatch: have %x, want %x", digest, wantDigest) } @@ -713,6 +713,17 @@ func TestConcurrentDiskCacheGeneration(t *testing.T) { pend.Wait() } +func TestTestMode(t *testing.T) { + head := &types.Header{Difficulty: big.NewInt(100)} + ethash := NewTestEthash() + nonce, mix := ethash.Search(types.NewBlockWithHeader(head), nil) + head.Nonce = types.EncodeNonce(nonce) + copy(head.MixDigest[:], mix) + if err := ethash.Verify(types.NewBlockWithHeader(head)); err != nil { + t.Error("unexpected Verify error:", err) + } +} + // Benchmarks the cache generation performance. func BenchmarkCacheGeneration(b *testing.B) { for i := 0; i < b.N; i++ { @@ -758,6 +769,6 @@ func BenchmarkHashimotoFullSmall(b *testing.B) { b.ResetTimer() for i := 0; i < b.N; i++ { - hashimotoFull(32*65536, dataset, hash, 0) + hashimotoFull(dataset, hash, 0) } } From d97dea51ec30a084fc5b19c462edb230f18fce3c Mon Sep 17 00:00:00 2001 From: holisticode Date: Fri, 17 Mar 2017 19:45:00 -0500 Subject: [PATCH 21/57] swarm/network/kademlia: set kademlia log output to debug instead of warn (#3787) --- swarm/network/kademlia/kademlia.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/swarm/network/kademlia/kademlia.go b/swarm/network/kademlia/kademlia.go index 8d731c0388..bf976a3e1d 100644 --- a/swarm/network/kademlia/kademlia.go +++ b/swarm/network/kademlia/kademlia.go @@ -116,7 +116,7 @@ func (self *Kademlia) DBCount() int { // On is the entry point called when a new nodes is added // unsafe in that node is not checked to be already active node (to be called once) func (self *Kademlia) On(node Node, cb func(*NodeRecord, Node) error) (err error) { - log.Warn(fmt.Sprintf("%v", self)) + log.Debug(fmt.Sprintf("%v", self)) defer self.lock.Unlock() self.lock.Lock() From 2ba9374789c622a2d6ff799219a5e21dc5a0507c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Mon, 20 Mar 2017 12:02:39 +0200 Subject: [PATCH 22/57] ethstats: try both ws:// and wss:// if none specified --- ethstats/ethstats.go | 38 ++++++++++++++++++++++++++++---------- 1 file changed, 28 insertions(+), 10 deletions(-) diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index 7b3a3439ee..4d38d3a500 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -22,10 +22,11 @@ import ( "errors" "fmt" "math/big" + "net" + "net/url" "regexp" "runtime" "strconv" - "strings" "time" "github.com/ethereum/go-ethereum/common" @@ -123,17 +124,34 @@ func (s *Service) loop() { // Loop reporting until termination for { - // Establish a websocket connection to the server and authenticate the node - url := fmt.Sprintf("%s/api", s.host) - if !strings.Contains(url, "://") { - url = "wss://" + url + // Resolve the URL, defaulting to TLS, but falling back to none too + path := fmt.Sprintf("%s/api", s.host) + urls := []string{path} + + if parsed, err := url.Parse(path); err == nil && !parsed.IsAbs() { + urls = []string{"wss://" + path, "ws://" + path} + } + // Establish a websocket connection to the server on any supported URL + var ( + conf *websocket.Config + conn *websocket.Conn + err error + ) + for _, url := range urls { + if conf, err = websocket.NewConfig(url, "http://localhost/"); err != nil { + continue + } + conf.Dialer = &net.Dialer{Timeout: 3 * time.Second} + if conn, err = websocket.DialConfig(conf); err == nil { + break + } } - conn, err := websocket.Dial(url, "", "http://localhost/") if err != nil { log.Warn("Stats server unreachable", "err", err) time.Sleep(10 * time.Second) continue } + // Authenticate the client with the server in := json.NewDecoder(conn) out := json.NewEncoder(conn) @@ -244,12 +262,12 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { // Make sure the request is valid and doesn't crash us request, ok := msg["emit"][1].(map[string]interface{}) if !ok { - log.Warn("Invalid history request", "msg", msg["emit"][1]) - return + log.Warn("Invalid stats history request", "msg", msg["emit"][1]) + continue // Ethstats sometime sends invalid history requests, ignore those } list, ok := request["list"].([]interface{}) if !ok { - log.Warn("Invalid history block list", "list", request["list"]) + log.Warn("Invalid stats history block list", "list", request["list"]) return } // Convert the block number list to an integer list @@ -257,7 +275,7 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { for i, num := range list { n, ok := num.(float64) if !ok { - log.Warn("Invalid history block number", "number", num) + log.Warn("Invalid stats history block number", "number", num) return } numbers[i] = uint64(n) From 7242e4f71bf27a12fd057442a4f9120d0a17dd1e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Mon, 20 Mar 2017 14:12:47 +0200 Subject: [PATCH 23/57] travis: switch to cocoapods 1.2.0 stable --- .travis.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.travis.yml b/.travis.yml index 7f71688542..64343625d1 100644 --- a/.travis.yml +++ b/.travis.yml @@ -158,7 +158,7 @@ matrix: # Build the iOS framework and upload it to CocoaPods and Azure - gem uninstall cocoapods -a - - gem install cocoapods --pre + - gem install cocoapods - mv ~/.cocoapods/repos/master ~/.cocoapods/repos/master.bak - sed -i '.bak' 's/repo.join/!repo.join/g' $(dirname `gem which cocoapods`)/cocoapods/sources_manager.rb From 9b84caf3a5f55cc2a14b50291118b9fab668b8c2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Wed, 22 Mar 2017 02:37:24 +0200 Subject: [PATCH 24/57] core, eth, les: support resuming fast sync on heavy rollback (#3743) --- core/blockchain.go | 73 +++++++++++++++++++++---------- eth/api_backend.go | 1 + eth/downloader/downloader.go | 16 +++---- eth/downloader/downloader_test.go | 4 +- eth/sync.go | 8 ++++ les/api_backend.go | 1 + 6 files changed, 69 insertions(+), 34 deletions(-) diff --git a/core/blockchain.go b/core/blockchain.go index 765a4b318f..207c21a659 100644 --- a/core/blockchain.go +++ b/core/blockchain.go @@ -182,16 +182,25 @@ func (self *BlockChain) loadLastState() error { head := GetHeadBlockHash(self.chainDb) if head == (common.Hash{}) { // Corrupt or empty database, init from scratch - self.Reset() - } else { - if block := self.GetBlockByHash(head); block != nil { - // Block found, set as the current head - self.currentBlock = block - } else { - // Corrupt or empty database, init from scratch - self.Reset() - } + log.Warn("Empty database, resetting chain") + return self.Reset() } + // Make sure the entire head block is available + currentBlock := self.GetBlockByHash(head) + if currentBlock == nil { + // Corrupt or empty database, init from scratch + log.Warn("Head block missing, resetting chain", "hash", head) + return self.Reset() + } + // Make sure the state associated with the block is available + if _, err := state.New(currentBlock.Root(), self.chainDb); err != nil { + // Dangling block without a state associated, init from scratch + log.Warn("Head state missing, resetting chain", "number", currentBlock.Number(), "hash", currentBlock.Hash()) + return self.Reset() + } + // Everything seems to be fine, set as the head block + self.currentBlock = currentBlock + // Restore the last known head header currentHeader := self.currentBlock.Header() if head := GetHeadHeaderHash(self.chainDb); head != (common.Hash{}) { @@ -200,6 +209,7 @@ func (self *BlockChain) loadLastState() error { } } self.hc.SetCurrentHeader(currentHeader) + // Restore the last known head fast block self.currentFastBlock = self.currentBlock if head := GetHeadFastBlockHash(self.chainDb); head != (common.Hash{}) { @@ -233,14 +243,18 @@ func (self *BlockChain) loadLastState() error { // above the new head will be deleted and the new one set. In the case of blocks // though, the head may be further rewound if block bodies are missing (non-archive // nodes after a fast sync). -func (bc *BlockChain) SetHead(head uint64) { +func (bc *BlockChain) SetHead(head uint64) error { + log.Warn("Rewinding blockchain", "target", head) + bc.mu.Lock() defer bc.mu.Unlock() + // Rewind the header chain, deleting all block bodies until then delFn := func(hash common.Hash, num uint64) { DeleteBody(bc.chainDb, hash, num) } bc.hc.SetHead(head, delFn) + currentHeader := bc.hc.CurrentHeader() // Clear out any stale content from the caches bc.bodyCache.Purge() @@ -248,29 +262,34 @@ func (bc *BlockChain) SetHead(head uint64) { bc.blockCache.Purge() bc.futureBlocks.Purge() - // Update all computed fields to the new head - currentHeader := bc.hc.CurrentHeader() + // Rewind the block chain, ensuring we don't end up with a stateless head block if bc.currentBlock != nil && currentHeader.Number.Uint64() < bc.currentBlock.NumberU64() { bc.currentBlock = bc.GetBlock(currentHeader.Hash(), currentHeader.Number.Uint64()) } + if bc.currentBlock != nil { + if _, err := state.New(bc.currentBlock.Root(), bc.chainDb); err != nil { + // Rewound state missing, rolled back to before pivot, reset to genesis + bc.currentBlock = nil + } + } + // Rewind the fast block in a simpleton way to the target head if bc.currentFastBlock != nil && currentHeader.Number.Uint64() < bc.currentFastBlock.NumberU64() { bc.currentFastBlock = bc.GetBlock(currentHeader.Hash(), currentHeader.Number.Uint64()) } - + // If either blocks reached nil, reset to the genesis state if bc.currentBlock == nil { bc.currentBlock = bc.genesisBlock } if bc.currentFastBlock == nil { bc.currentFastBlock = bc.genesisBlock } - if err := WriteHeadBlockHash(bc.chainDb, bc.currentBlock.Hash()); err != nil { log.Crit("Failed to reset head full block", "err", err) } if err := WriteHeadFastBlockHash(bc.chainDb, bc.currentFastBlock.Hash()); err != nil { log.Crit("Failed to reset head fast block", "err", err) } - bc.loadLastState() + return bc.loadLastState() } // FastSyncCommitHead sets the current head block to the one defined by the hash @@ -378,16 +397,17 @@ func (self *BlockChain) StateAt(root common.Hash) (*state.StateDB, error) { } // Reset purges the entire blockchain, restoring it to its genesis state. -func (bc *BlockChain) Reset() { - bc.ResetWithGenesisBlock(bc.genesisBlock) +func (bc *BlockChain) Reset() error { + return bc.ResetWithGenesisBlock(bc.genesisBlock) } // ResetWithGenesisBlock purges the entire blockchain, restoring it to the // specified genesis state. -func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) { +func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) error { // Dump the entire block chain and purge the caches - bc.SetHead(0) - + if err := bc.SetHead(0); err != nil { + return err + } bc.mu.Lock() defer bc.mu.Unlock() @@ -404,6 +424,8 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) { bc.hc.SetGenesis(bc.genesisBlock.Header()) bc.hc.SetCurrentHeader(bc.genesisBlock.Header()) bc.currentFastBlock = bc.genesisBlock + + return nil } // Export writes the active chain to the given writer. @@ -790,12 +812,15 @@ func (self *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain } // Update the head fast sync block if better self.mu.Lock() + head := blockChain[len(errs)-1] - if self.GetTd(self.currentFastBlock.Hash(), self.currentFastBlock.NumberU64()).Cmp(self.GetTd(head.Hash(), head.NumberU64())) < 0 { - if err := WriteHeadFastBlockHash(self.chainDb, head.Hash()); err != nil { - log.Crit("Failed to update head fast block hash", "err", err) + if td := self.GetTd(head.Hash(), head.NumberU64()); td != nil { // Rewind may have occurred, skip in that case + if self.GetTd(self.currentFastBlock.Hash(), self.currentFastBlock.NumberU64()).Cmp(td) < 0 { + if err := WriteHeadFastBlockHash(self.chainDb, head.Hash()); err != nil { + log.Crit("Failed to update head fast block hash", "err", err) + } + self.currentFastBlock = head } - self.currentFastBlock = head } self.mu.Unlock() diff --git a/eth/api_backend.go b/eth/api_backend.go index 5a5c4c532e..bce772900d 100644 --- a/eth/api_backend.go +++ b/eth/api_backend.go @@ -51,6 +51,7 @@ func (b *EthApiBackend) CurrentBlock() *types.Block { } func (b *EthApiBackend) SetHead(number uint64) { + b.eth.protocolManager.downloader.Cancel() b.eth.blockchain.SetHead(number) } diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go index f7aca031a9..d269957827 100644 --- a/eth/downloader/downloader.go +++ b/eth/downloader/downloader.go @@ -277,7 +277,7 @@ func (d *Downloader) UnregisterPeer(id string) error { d.cancelLock.RUnlock() if master { - d.cancel() + d.Cancel() } return nil } @@ -352,7 +352,7 @@ func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int, mode d.cancelPeer = id d.cancelLock.Unlock() - defer d.cancel() // No matter what, we can't leave the cancel channel open + defer d.Cancel() // No matter what, we can't leave the cancel channel open // Set the requested sync mode, unless it's forbidden d.mode = mode @@ -473,7 +473,7 @@ func (d *Downloader) spawnSync(origin uint64, fetchers ...func() error) error { } } d.queue.Close() - d.cancel() + d.Cancel() wg.Wait() // If sync failed in the critical section, bump the fail counter @@ -483,9 +483,9 @@ func (d *Downloader) spawnSync(origin uint64, fetchers ...func() error) error { return err } -// cancel cancels all of the operations and resets the queue. It returns true +// Cancel cancels all of the operations and resets the queue. It returns true // if the cancel operation was completed. -func (d *Downloader) cancel() { +func (d *Downloader) Cancel() { // Close the current cancel channel d.cancelLock.Lock() if d.cancelCh != nil { @@ -512,7 +512,7 @@ func (d *Downloader) Terminate() { d.quitLock.Unlock() // Cancel any pending download requests - d.cancel() + d.Cancel() } // fetchHeight retrieves the head header of the remote peer to aid in estimating @@ -945,7 +945,7 @@ func (d *Downloader) fetchNodeData() error { if err != nil { // If the node data processing failed, the root hash is very wrong, abort log.Error("State processing failed", "peer", packet.PeerId(), "err", err) - d.cancel() + d.Cancel() return } // Processing succeeded, notify state fetcher of continuation @@ -1208,7 +1208,7 @@ func (d *Downloader) processHeaders(origin uint64, td *big.Int) error { if atomic.LoadUint32(&d.fsPivotFails) == 0 { for _, header := range rollback { if header.Number.Uint64() == pivot { - log.Warn("Fast-sync critical section failure, locked pivot to header", "number", pivot, "hash", header.Hash()) + log.Warn("Fast-sync pivot locked in", "number", pivot, "hash", header.Hash()) d.fsPivotLock = header } } diff --git a/eth/downloader/downloader_test.go b/eth/downloader/downloader_test.go index a9ea797eac..267a0def94 100644 --- a/eth/downloader/downloader_test.go +++ b/eth/downloader/downloader_test.go @@ -982,7 +982,7 @@ func testCancel(t *testing.T, protocol int, mode SyncMode) { tester.newPeer("peer", protocol, hashes, headers, blocks, receipts) // Make sure canceling works with a pristine downloader - tester.downloader.cancel() + tester.downloader.Cancel() if !tester.downloader.queue.Idle() { t.Errorf("download queue not idle") } @@ -990,7 +990,7 @@ func testCancel(t *testing.T, protocol int, mode SyncMode) { if err := tester.sync("peer", nil, mode); err != nil { t.Fatalf("failed to synchronise blocks: %v", err) } - tester.downloader.cancel() + tester.downloader.Cancel() if !tester.downloader.queue.Idle() { t.Errorf("download queue not idle") } diff --git a/eth/sync.go b/eth/sync.go index 6e2c7c4320..f2cae6c198 100644 --- a/eth/sync.go +++ b/eth/sync.go @@ -175,6 +175,14 @@ func (pm *ProtocolManager) synchronise(peer *peer) { // Otherwise try to sync with the downloader mode := downloader.FullSync if atomic.LoadUint32(&pm.fastSync) == 1 { + // Fast sync was explicitly requested, and explicitly granted + mode = downloader.FastSync + } else if currentBlock.NumberU64() == 0 && pm.blockchain.CurrentFastBlock().NumberU64() > 0 { + // The database seems empty as the current block is the genesis. Yet the fast + // block is ahead, so fast sync was enabled for this node at a certain point. + // The only scenario where this can happen is if the user manually (or via a + // bad block) rolled back a fast sync node below the sync point. In this case + // however it's safe to reenable fast sync. mode = downloader.FastSync } if err := pm.downloader.Synchronise(peer.id, pHead, pTd, mode); err != nil { diff --git a/les/api_backend.go b/les/api_backend.go index 264b381f51..006240369c 100644 --- a/les/api_backend.go +++ b/les/api_backend.go @@ -50,6 +50,7 @@ func (b *LesApiBackend) CurrentBlock() *types.Block { } func (b *LesApiBackend) SetHead(number uint64) { + b.eth.protocolManager.downloader.Cancel() b.eth.blockchain.SetHead(number) } From 6742fc526f3e1ae985d82a1781df4267485e2c70 Mon Sep 17 00:00:00 2001 From: Yohann Leon Date: Wed, 22 Mar 2017 15:32:51 +0100 Subject: [PATCH 25/57] core/vm: use uint64 instead of *big.Int in tracer (#3805) --- core/vm/interpreter.go | 8 ++------ core/vm/logger.go | 10 +++++----- core/vm/logger_test.go | 6 +++--- internal/ethapi/api.go | 4 ++-- internal/ethapi/tracer.go | 6 +++--- internal/ethapi/tracer_test.go | 4 ++-- 6 files changed, 17 insertions(+), 21 deletions(-) diff --git a/core/vm/interpreter.go b/core/vm/interpreter.go index 7d12ebc059..8ee9d3ca79 100644 --- a/core/vm/interpreter.go +++ b/core/vm/interpreter.go @@ -18,7 +18,6 @@ package vm import ( "fmt" - "math/big" "sync/atomic" "time" @@ -117,9 +116,7 @@ func (evm *Interpreter) Run(contract *Contract, input []byte) (ret []byte, err e if err != nil && evm.cfg.Debug { // XXX For debugging //fmt.Printf("%04d: %8v cost = %-8d stack = %-8d ERR = %v\n", pc, op, cost, stack.len(), err) - // TODO update the tracer - g, c := new(big.Int).SetUint64(contract.Gas), new(big.Int).SetUint64(cost) - evm.cfg.Tracer.CaptureState(evm.env, pc, op, g, c, mem, stack, contract, evm.env.depth, err) + evm.cfg.Tracer.CaptureState(evm.env, pc, op, contract.Gas, cost, mem, stack, contract, evm.env.depth, err) } }() @@ -177,8 +174,7 @@ func (evm *Interpreter) Run(contract *Contract, input []byte) (ret []byte, err e } if evm.cfg.Debug { - g, c := new(big.Int).SetUint64(contract.Gas), new(big.Int).SetUint64(cost) - evm.cfg.Tracer.CaptureState(evm.env, pc, op, g, c, mem, stack, contract, evm.env.depth, err) + evm.cfg.Tracer.CaptureState(evm.env, pc, op, contract.Gas, cost, mem, stack, contract, evm.env.depth, err) } // XXX For debugging //fmt.Printf("%04d: %8v cost = %-8d stack = %-8d\n", pc, op, cost, stack.len()) diff --git a/core/vm/logger.go b/core/vm/logger.go index 3d7e1c95fe..825025b05f 100644 --- a/core/vm/logger.go +++ b/core/vm/logger.go @@ -52,8 +52,8 @@ type LogConfig struct { type StructLog struct { Pc uint64 Op OpCode - Gas *big.Int - GasCost *big.Int + Gas uint64 + GasCost uint64 Memory []byte Stack []*big.Int Storage map[common.Hash]common.Hash @@ -67,7 +67,7 @@ type StructLog struct { // Note that reference types are actual VM data structures; make copies // if you need to retain them beyond the current call. type Tracer interface { - CaptureState(env *EVM, pc uint64, op OpCode, gas, cost *big.Int, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error + CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error } // StructLogger is an EVM state logger and implements Tracer. @@ -96,7 +96,7 @@ func NewStructLogger(cfg *LogConfig) *StructLogger { // captureState logs a new structured log message and pushes it out to the environment // // captureState also tracks SSTORE ops to track dirty values. -func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost *big.Int, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error { +func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost uint64, memory *Memory, stack *Stack, contract *Contract, depth int, err error) error { // check if already accumulated the specified number of logs if l.cfg.Limit != 0 && l.cfg.Limit <= len(l.logs) { return ErrTraceLimitReached @@ -158,7 +158,7 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost *b } } // create a new snaptshot of the EVM. - log := StructLog{pc, op, new(big.Int).Set(gas), cost, mem, stck, storage, env.depth, err} + log := StructLog{pc, op, gas, cost, mem, stck, storage, env.depth, err} l.logs = append(l.logs, log) return nil diff --git a/core/vm/logger_test.go b/core/vm/logger_test.go index e755a18e2a..b6fa31132a 100644 --- a/core/vm/logger_test.go +++ b/core/vm/logger_test.go @@ -59,7 +59,7 @@ func TestStoreCapture(t *testing.T) { var index common.Hash - logger.CaptureState(env, 0, SSTORE, new(big.Int), new(big.Int), mem, stack, contract, 0, nil) + logger.CaptureState(env, 0, SSTORE, 0, 0, mem, stack, contract, 0, nil) if len(logger.changedValues[contract.Address()]) == 0 { t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.changedValues[contract.Address()])) } @@ -81,13 +81,13 @@ func TestStorageCapture(t *testing.T) { stack = newstack() ) - logger.CaptureState(env, 0, STOP, new(big.Int), new(big.Int), mem, stack, contract, 0, nil) + logger.CaptureState(env, 0, STOP, 0, 0, mem, stack, contract, 0, nil) if ref.calledForEach { t.Error("didn't expect for each to be called") } logger = NewStructLogger(&LogConfig{FullStorage: true}) - logger.CaptureState(env, 0, STOP, new(big.Int), new(big.Int), mem, stack, contract, 0, nil) + logger.CaptureState(env, 0, STOP, 0, 0, mem, stack, contract, 0, nil) if !ref.calledForEach { t.Error("expected for each to be called") } diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go index c8374fe18e..0928c973f4 100644 --- a/internal/ethapi/api.go +++ b/internal/ethapi/api.go @@ -695,8 +695,8 @@ type ExecutionResult struct { type StructLogRes struct { Pc uint64 `json:"pc"` Op string `json:"op"` - Gas *big.Int `json:"gas"` - GasCost *big.Int `json:"gasCost"` + Gas uint64 `json:"gas"` + GasCost uint64 `json:"gasCost"` Depth int `json:"depth"` Error error `json:"error"` Stack []string `json:"stack"` diff --git a/internal/ethapi/tracer.go b/internal/ethapi/tracer.go index ef107fc42f..fe26853753 100644 --- a/internal/ethapi/tracer.go +++ b/internal/ethapi/tracer.go @@ -278,7 +278,7 @@ func wrapError(context string, err error) error { } // CaptureState implements the Tracer interface to trace a single step of VM execution -func (jst *JavascriptTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost *big.Int, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error { +func (jst *JavascriptTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error { if jst.err == nil { jst.memory.memory = memory jst.stack.stack = stack @@ -288,8 +288,8 @@ func (jst *JavascriptTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, jst.log["pc"] = pc jst.log["op"] = ocw.toValue(jst.vm) - jst.log["gas"] = gas.Int64() - jst.log["gasPrice"] = cost.Int64() + jst.log["gas"] = gas + jst.log["gasPrice"] = cost jst.log["memory"] = jst.memvalue jst.log["stack"] = jst.stackvalue jst.log["depth"] = depth diff --git a/internal/ethapi/tracer_test.go b/internal/ethapi/tracer_test.go index 693afe802f..0ef450ce32 100644 --- a/internal/ethapi/tracer_test.go +++ b/internal/ethapi/tracer_test.go @@ -136,10 +136,10 @@ func TestHaltBetweenSteps(t *testing.T) { env := vm.NewEVM(vm.Context{}, nil, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer}) contract := vm.NewContract(&account{}, &account{}, big.NewInt(0), 0) - tracer.CaptureState(env, 0, 0, big.NewInt(0), big.NewInt(0), nil, nil, contract, 0, nil) + tracer.CaptureState(env, 0, 0, 0, 0, nil, nil, contract, 0, nil) timeout := errors.New("stahp") tracer.Stop(timeout) - tracer.CaptureState(env, 0, 0, big.NewInt(0), big.NewInt(0), nil, nil, contract, 0, nil) + tracer.CaptureState(env, 0, 0, 0, 0, nil, nil, contract, 0, nil) if _, err := tracer.GetResult(); err.Error() != "stahp in server-side tracer function 'step'" { t.Errorf("Expected timeout error, got %v", err) From da7af440609229b269bea41a8041cb25da4f12e8 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Wed, 22 Mar 2017 15:52:44 +0100 Subject: [PATCH 26/57] build: require Go >= 1.7 We have decided to bump the requirement to Go 1.7 because it enables subtests and allows dropping backwards-compatibility code. This is in line with Go's support policy. Go 1.6 and earlier no longer receive security updates. --- .travis.yml | 8 -------- README.md | 2 +- build/ci.go | 18 ++++-------------- build/env.sh | 3 +-- 4 files changed, 6 insertions(+), 25 deletions(-) diff --git a/.travis.yml b/.travis.yml index 64343625d1..5f3ff9d16a 100644 --- a/.travis.yml +++ b/.travis.yml @@ -3,14 +3,6 @@ go_import_path: github.com/ethereum/go-ethereum sudo: false matrix: include: - - os: linux - dist: trusty - go: 1.5.4 - env: - - GO15VENDOREXPERIMENT=1 - - os: linux - dist: trusty - go: 1.6.2 - os: linux dist: trusty go: 1.7.5 diff --git a/README.md b/README.md index 3241d22504..34522fc06c 100644 --- a/README.md +++ b/README.md @@ -16,7 +16,7 @@ For prerequisites and detailed build instructions please read the [Installation Instructions](https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum) on the wiki. -Building geth requires both a Go and a C compiler. +Building geth requires both a Go (version 1.7 or later) and a C compiler. You can install them using your favourite package manager. Once the dependencies are installed, run diff --git a/build/ci.go b/build/ci.go index 914ce9eaec..6761a4c888 100644 --- a/build/ci.go +++ b/build/ci.go @@ -162,9 +162,9 @@ func doInstall(cmdline []string) { // Check Go version. People regularly open issues about compilation // failure with outdated Go. This should save them the trouble. - if runtime.Version() < "go1.4" && !strings.HasPrefix(runtime.Version(), "devel") { + if runtime.Version() < "go1.7" && !strings.HasPrefix(runtime.Version(), "devel") { log.Println("You have Go version", runtime.Version()) - log.Println("go-ethereum requires at least Go version 1.4 and cannot") + log.Println("go-ethereum requires at least Go version 1.7 and cannot") log.Println("be compiled with an earlier version. Please upgrade your Go installation.") os.Exit(1) } @@ -219,16 +219,9 @@ func buildFlags(env build.Environment) (flags []string) { flags = append(flags, "-tags", "opencl") } - // Since Go 1.5, the separator char for link time assignments - // is '=' and using ' ' prints a warning. However, Go < 1.5 does - // not support using '='. - sep := " " - if runtime.Version() > "go1.5" || strings.Contains(runtime.Version(), "devel") { - sep = "=" - } // Set gitCommit constant via link-time assignment. if env.Commit != "" { - flags = append(flags, "-ldflags", "-X main.gitCommit"+sep+env.Commit) + flags = append(flags, "-ldflags", "-X main.gitCommit="+env.Commit) } return flags } @@ -249,10 +242,7 @@ func goToolArch(arch string, subcmd string, args ...string) *exec.Cmd { cmd.Args = append(cmd.Args, []string{"-ldflags", "-extldflags -Wl,--allow-multiple-definition"}...) } } - cmd.Env = []string{ - "GO15VENDOREXPERIMENT=1", - "GOPATH=" + build.GOPATH(), - } + cmd.Env = []string{"GOPATH=" + build.GOPATH()} if arch == "" || arch == runtime.GOARCH { cmd.Env = append(cmd.Env, "GOBIN="+GOBIN) } else { diff --git a/build/env.sh b/build/env.sh index af560305b3..3914555d1b 100755 --- a/build/env.sh +++ b/build/env.sh @@ -20,8 +20,7 @@ fi # Set up the environment to use the workspace. GOPATH="$workspace" -GO15VENDOREXPERIMENT=1 -export GOPATH GO15VENDOREXPERIMENT +export GOPATH # Run the command inside the workspace. cd "$ethdir/go-ethereum" From c6e6f1fec26833bffc7dd0c9e346fa6579f66dff Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Wed, 22 Mar 2017 15:59:02 +0100 Subject: [PATCH 27/57] build: remove support for the GO_OPENCL environment variable We don't use the opencl build tag anymore. --- build/ci.go | 4 ---- 1 file changed, 4 deletions(-) diff --git a/build/ci.go b/build/ci.go index 6761a4c888..cb9c7a335b 100644 --- a/build/ci.go +++ b/build/ci.go @@ -215,10 +215,6 @@ func doInstall(cmdline []string) { } func buildFlags(env build.Environment) (flags []string) { - if os.Getenv("GO_OPENCL") != "" { - flags = append(flags, "-tags", "opencl") - } - // Set gitCommit constant via link-time assignment. if env.Commit != "" { flags = append(flags, "-ldflags", "-X main.gitCommit="+env.Commit) From 525116dbff916825463931361f75e75e955c12e2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Felf=C3=B6ldi=20Zsolt?= Date: Wed, 22 Mar 2017 20:44:22 +0100 Subject: [PATCH 28/57] les: implement request distributor, fix blocking issues (#3660) * les: implement request distributor, fix blocking issues * core: moved header validation before chain mutex lock --- core/blockchain.go | 7 +- core/headerchain.go | 13 +- les/backend.go | 2 + les/distributor.go | 259 +++++++++++++++++++++++++++++++++++++ les/distributor_test.go | 192 +++++++++++++++++++++++++++ les/execqueue.go | 71 ++++++++++ les/fetcher.go | 184 +++++++++++++++----------- les/flowcontrol/control.go | 104 ++++----------- les/handler.go | 66 ++++++++-- les/helper_test.go | 8 +- les/odr.go | 99 +++++++------- les/odr_requests.go | 12 +- les/odr_test.go | 3 + les/peer.go | 35 +++-- les/request_test.go | 3 + les/serverpool.go | 76 ----------- les/txrelay.go | 27 +++- light/lightchain.go | 13 +- light/txpool.go | 21 +-- 19 files changed, 875 insertions(+), 320 deletions(-) create mode 100644 les/distributor.go create mode 100644 les/distributor_test.go create mode 100644 les/execqueue.go diff --git a/core/blockchain.go b/core/blockchain.go index 207c21a659..a57832df02 100644 --- a/core/blockchain.go +++ b/core/blockchain.go @@ -1313,6 +1313,11 @@ Error: %v // of the header retrieval mechanisms already need to verify nonces, as well as // because nonces can be verified sparsely, not needing to check each. func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error) { + start := time.Now() + if i, err := self.hc.ValidateHeaderChain(chain, checkFreq); err != nil { + return i, err + } + // Make sure only one thread manipulates the chain at once self.chainmu.Lock() defer self.chainmu.Unlock() @@ -1328,7 +1333,7 @@ func (self *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) return err } - return self.hc.InsertHeaderChain(chain, checkFreq, whFunc) + return self.hc.InsertHeaderChain(chain, whFunc, start) } // writeHeader writes a header into the local chain, given that its parent is diff --git a/core/headerchain.go b/core/headerchain.go index a3d6220877..57da9771b1 100644 --- a/core/headerchain.go +++ b/core/headerchain.go @@ -219,7 +219,8 @@ type WhCallback func(*types.Header) error // should be done or not. The reason behind the optional check is because some // of the header retrieval mechanisms already need to verfy nonces, as well as // because nonces can be verified sparsely, not needing to check each. -func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, checkFreq int, writeHeader WhCallback) (int, error) { + +func (hc *HeaderChain) ValidateHeaderChain(chain []*types.Header, checkFreq int) (int, error) { // Do a sanity check that the provided chain is actually ordered and linked for i := 1; i < len(chain); i++ { if chain[i].Number.Uint64() != chain[i-1].Number.Uint64()+1 || chain[i].ParentHash != chain[i-1].Hash() { @@ -231,9 +232,6 @@ func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, checkFreq int, w chain[i-1].Hash().Bytes()[:4], i, chain[i].Number, chain[i].Hash().Bytes()[:4], chain[i].ParentHash[:4]) } } - // Collect some import statistics to report on - stats := struct{ processed, ignored int }{} - start := time.Now() // Generate the list of headers that should be POW verified verify := make([]bool, len(chain)) @@ -309,6 +307,13 @@ func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, checkFreq int, w } } } + + return 0, nil +} + +func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, writeHeader WhCallback, start time.Time) (int, error) { + // Collect some import statistics to report on + stats := struct{ processed, ignored int }{} // All headers passed verification, import them into the database for i, header := range chain { // Short circuit insertion if shutting down diff --git a/les/backend.go b/les/backend.go index 404728c0e1..3cab75f33c 100644 --- a/les/backend.go +++ b/les/backend.go @@ -107,6 +107,8 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.LightMode, config.NetworkId, eth.eventMux, eth.pow, eth.blockchain, nil, chainDb, odr, relay); err != nil { return nil, err } + relay.ps = eth.protocolManager.peers + relay.reqDist = eth.protocolManager.reqDist eth.ApiBackend = &LesApiBackend{eth, nil} eth.ApiBackend.gpo = gasprice.NewLightPriceOracle(eth.ApiBackend) diff --git a/les/distributor.go b/les/distributor.go new file mode 100644 index 0000000000..c59b36146f --- /dev/null +++ b/les/distributor.go @@ -0,0 +1,259 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package light implements on-demand retrieval capable state and chain objects +// for the Ethereum Light Client. +package les + +import ( + "container/list" + "errors" + "sync" + "time" +) + +// ErrNoPeers is returned if no peers capable of serving a queued request are available +var ErrNoPeers = errors.New("no suitable peers available") + +// requestDistributor implements a mechanism that distributes requests to +// suitable peers, obeying flow control rules and prioritizing them in creation +// order (even when a resend is necessary). +type requestDistributor struct { + reqQueue *list.List + lastReqOrder uint64 + stopChn, loopChn chan struct{} + loopNextSent bool + lock sync.Mutex + + getAllPeers func() map[distPeer]struct{} +} + +// distPeer is an LES server peer interface for the request distributor. +// waitBefore returns either the necessary waiting time before sending a request +// with the given upper estimated cost or the estimated remaining relative buffer +// value after sending such a request (in which case the request can be sent +// immediately). At least one of these values is always zero. +type distPeer interface { + waitBefore(uint64) (time.Duration, float64) + canQueue() bool + queueSend(f func()) +} + +// distReq is the request abstraction used by the distributor. It is based on +// three callback functions: +// - getCost returns the upper estimate of the cost of sending the request to a given peer +// - canSend tells if the server peer is suitable to serve the request +// - request prepares sending the request to the given peer and returns a function that +// does the actual sending. Request order should be preserved but the callback itself should not +// block until it is sent because other peers might still be able to receive requests while +// one of them is blocking. Instead, the returned function is put in the peer's send queue. +type distReq struct { + getCost func(distPeer) uint64 + canSend func(distPeer) bool + request func(distPeer) func() + + reqOrder uint64 + sentChn chan distPeer + element *list.Element +} + +// newRequestDistributor creates a new request distributor +func newRequestDistributor(getAllPeers func() map[distPeer]struct{}, stopChn chan struct{}) *requestDistributor { + r := &requestDistributor{ + reqQueue: list.New(), + loopChn: make(chan struct{}, 2), + stopChn: stopChn, + getAllPeers: getAllPeers, + } + go r.loop() + return r +} + +// distMaxWait is the maximum waiting time after which further necessary waiting +// times are recalculated based on new feedback from the servers +const distMaxWait = time.Millisecond * 10 + +// main event loop +func (d *requestDistributor) loop() { + for { + select { + case <-d.stopChn: + d.lock.Lock() + elem := d.reqQueue.Front() + for elem != nil { + close(elem.Value.(*distReq).sentChn) + elem = elem.Next() + } + d.lock.Unlock() + return + case <-d.loopChn: + d.lock.Lock() + d.loopNextSent = false + loop: + for { + peer, req, wait := d.nextRequest() + if req != nil && wait == 0 { + chn := req.sentChn // save sentChn because remove sets it to nil + d.remove(req) + send := req.request(peer) + if send != nil { + peer.queueSend(send) + } + chn <- peer + close(chn) + } else { + if wait == 0 { + // no request to send and nothing to wait for; the next + // queued request will wake up the loop + break loop + } + d.loopNextSent = true // a "next" signal has been sent, do not send another one until this one has been received + if wait > distMaxWait { + // waiting times may be reduced by incoming request replies, if it is too long, recalculate it periodically + wait = distMaxWait + } + go func() { + time.Sleep(wait) + d.loopChn <- struct{}{} + }() + break loop + } + } + d.lock.Unlock() + } + } +} + +// selectPeerItem represents a peer to be selected for a request by weightedRandomSelect +type selectPeerItem struct { + peer distPeer + req *distReq + weight int64 +} + +// Weight implements wrsItem interface +func (sp selectPeerItem) Weight() int64 { + return sp.weight +} + +// nextRequest returns the next possible request from any peer, along with the +// associated peer and necessary waiting time +func (d *requestDistributor) nextRequest() (distPeer, *distReq, time.Duration) { + peers := d.getAllPeers() + + elem := d.reqQueue.Front() + var ( + bestPeer distPeer + bestReq *distReq + bestWait time.Duration + sel *weightedRandomSelect + ) + + for (len(peers) > 0 || elem == d.reqQueue.Front()) && elem != nil { + req := elem.Value.(*distReq) + canSend := false + for peer, _ := range peers { + if peer.canQueue() && req.canSend(peer) { + canSend = true + cost := req.getCost(peer) + wait, bufRemain := peer.waitBefore(cost) + if wait == 0 { + if sel == nil { + sel = newWeightedRandomSelect() + } + sel.update(selectPeerItem{peer: peer, req: req, weight: int64(bufRemain*1000000) + 1}) + } else { + if bestReq == nil || wait < bestWait { + bestPeer = peer + bestReq = req + bestWait = wait + } + } + delete(peers, peer) + } + } + next := elem.Next() + if !canSend && elem == d.reqQueue.Front() { + close(req.sentChn) + d.remove(req) + } + elem = next + } + + if sel != nil { + c := sel.choose().(selectPeerItem) + return c.peer, c.req, 0 + } + return bestPeer, bestReq, bestWait +} + +// queue adds a request to the distribution queue, returns a channel where the +// receiving peer is sent once the request has been sent (request callback returned). +// If the request is cancelled or timed out without suitable peers, the channel is +// closed without sending any peer references to it. +func (d *requestDistributor) queue(r *distReq) chan distPeer { + d.lock.Lock() + defer d.lock.Unlock() + + if r.reqOrder == 0 { + d.lastReqOrder++ + r.reqOrder = d.lastReqOrder + } + + back := d.reqQueue.Back() + if back == nil || r.reqOrder > back.Value.(*distReq).reqOrder { + r.element = d.reqQueue.PushBack(r) + } else { + before := d.reqQueue.Front() + for before.Value.(*distReq).reqOrder < r.reqOrder { + before = before.Next() + } + r.element = d.reqQueue.InsertBefore(r, before) + } + + if !d.loopNextSent { + d.loopNextSent = true + d.loopChn <- struct{}{} + } + + r.sentChn = make(chan distPeer, 1) + return r.sentChn +} + +// cancel removes a request from the queue if it has not been sent yet (returns +// false if it has been sent already). It is guaranteed that the callback functions +// will not be called after cancel returns. +func (d *requestDistributor) cancel(r *distReq) bool { + d.lock.Lock() + defer d.lock.Unlock() + + if r.sentChn == nil { + return false + } + + close(r.sentChn) + d.remove(r) + return true +} + +// remove removes a request from the queue +func (d *requestDistributor) remove(r *distReq) { + r.sentChn = nil + if r.element != nil { + d.reqQueue.Remove(r.element) + r.element = nil + } +} diff --git a/les/distributor_test.go b/les/distributor_test.go new file mode 100644 index 0000000000..f2eb80729b --- /dev/null +++ b/les/distributor_test.go @@ -0,0 +1,192 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package light implements on-demand retrieval capable state and chain objects +// for the Ethereum Light Client. +package les + +import ( + "math/rand" + "sync" + "testing" + "time" +) + +type testDistReq struct { + cost, procTime, order uint64 + canSendTo map[*testDistPeer]struct{} +} + +func (r *testDistReq) getCost(dp distPeer) uint64 { + return r.cost +} + +func (r *testDistReq) canSend(dp distPeer) bool { + _, ok := r.canSendTo[dp.(*testDistPeer)] + return ok +} + +func (r *testDistReq) request(dp distPeer) func() { + return func() { dp.(*testDistPeer).send(r) } +} + +type testDistPeer struct { + sent []*testDistReq + sumCost uint64 + lock sync.RWMutex +} + +func (p *testDistPeer) send(r *testDistReq) { + p.lock.Lock() + defer p.lock.Unlock() + + p.sent = append(p.sent, r) + p.sumCost += r.cost +} + +func (p *testDistPeer) worker(t *testing.T, checkOrder bool, stop chan struct{}) { + var last uint64 + for { + wait := time.Millisecond + p.lock.Lock() + if len(p.sent) > 0 { + rq := p.sent[0] + wait = time.Duration(rq.procTime) + p.sumCost -= rq.cost + if checkOrder { + if rq.order <= last { + t.Errorf("Requests processed in wrong order") + } + last = rq.order + } + p.sent = p.sent[1:] + } + p.lock.Unlock() + select { + case <-stop: + return + case <-time.After(wait): + } + } +} + +const ( + testDistBufLimit = 10000000 + testDistMaxCost = 1000000 + testDistPeerCount = 5 + testDistReqCount = 50000 + testDistMaxResendCount = 3 +) + +func (p *testDistPeer) waitBefore(cost uint64) (time.Duration, float64) { + p.lock.RLock() + sumCost := p.sumCost + cost + p.lock.RUnlock() + if sumCost < testDistBufLimit { + return 0, float64(testDistBufLimit-sumCost) / float64(testDistBufLimit) + } else { + return time.Duration(sumCost - testDistBufLimit), 0 + } +} + +func (p *testDistPeer) canQueue() bool { + return true +} + +func (p *testDistPeer) queueSend(f func()) { + f() +} + +func TestRequestDistributor(t *testing.T) { + testRequestDistributor(t, false) +} + +func TestRequestDistributorResend(t *testing.T) { + testRequestDistributor(t, true) +} + +func testRequestDistributor(t *testing.T, resend bool) { + stop := make(chan struct{}) + defer close(stop) + + var peers [testDistPeerCount]*testDistPeer + for i, _ := range peers { + peers[i] = &testDistPeer{} + go peers[i].worker(t, !resend, stop) + } + + dist := newRequestDistributor(func() map[distPeer]struct{} { + m := make(map[distPeer]struct{}) + for _, peer := range peers { + m[peer] = struct{}{} + } + return m + }, stop) + + var wg sync.WaitGroup + + for i := 1; i <= testDistReqCount; i++ { + cost := uint64(rand.Int63n(testDistMaxCost)) + procTime := uint64(rand.Int63n(int64(cost + 1))) + rq := &testDistReq{ + cost: cost, + procTime: procTime, + order: uint64(i), + canSendTo: make(map[*testDistPeer]struct{}), + } + for _, peer := range peers { + if rand.Intn(2) != 0 { + rq.canSendTo[peer] = struct{}{} + } + } + + wg.Add(1) + req := &distReq{ + getCost: rq.getCost, + canSend: rq.canSend, + request: rq.request, + } + chn := dist.queue(req) + go func() { + cnt := 1 + if resend && len(rq.canSendTo) != 0 { + cnt = rand.Intn(testDistMaxResendCount) + 1 + } + for i := 0; i < cnt; i++ { + if i != 0 { + chn = dist.queue(req) + } + p := <-chn + if p == nil { + if len(rq.canSendTo) != 0 { + t.Errorf("Request that could have been sent was dropped") + } + } else { + peer := p.(*testDistPeer) + if _, ok := rq.canSendTo[peer]; !ok { + t.Errorf("Request sent to wrong peer") + } + } + } + wg.Done() + }() + if rand.Intn(1000) == 0 { + time.Sleep(time.Duration(rand.Intn(5000000))) + } + } + + wg.Wait() +} diff --git a/les/execqueue.go b/les/execqueue.go new file mode 100644 index 0000000000..ac779003bd --- /dev/null +++ b/les/execqueue.go @@ -0,0 +1,71 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package les + +import ( + "sync/atomic" +) + +// ExecQueue implements a queue that executes function calls in a single thread, +// in the same order as they have been queued. +type execQueue struct { + chn chan func() + cnt, stop, capacity int32 +} + +// NewExecQueue creates a new execution queue. +func newExecQueue(capacity int32) *execQueue { + q := &execQueue{ + chn: make(chan func(), capacity), + capacity: capacity, + } + go q.loop() + return q +} + +func (q *execQueue) loop() { + for f := range q.chn { + atomic.AddInt32(&q.cnt, -1) + if atomic.LoadInt32(&q.stop) != 0 { + return + } + f() + } +} + +// CanQueue returns true if more function calls can be added to the execution queue. +func (q *execQueue) canQueue() bool { + return atomic.LoadInt32(&q.stop) == 0 && atomic.LoadInt32(&q.cnt) < q.capacity +} + +// Queue adds a function call to the execution queue. Returns true if successful. +func (q *execQueue) queue(f func()) bool { + if atomic.LoadInt32(&q.stop) != 0 { + return false + } + if atomic.AddInt32(&q.cnt, 1) > q.capacity { + atomic.AddInt32(&q.cnt, -1) + return false + } + q.chn <- f + return true +} + +// Stop stops the exec queue. +func (q *execQueue) quit() { + atomic.StoreInt32(&q.stop, 1) +} diff --git a/les/fetcher.go b/les/fetcher.go index f9e517d25b..353e919323 100644 --- a/les/fetcher.go +++ b/les/fetcher.go @@ -135,35 +135,38 @@ func (f *lightFetcher) syncLoop() { f.lock.Lock() s := requesting requesting = false + var ( + rq *distReq + reqID uint64 + ) if !f.syncing && !(newAnnounce && s) { - reqID := getNextReqID() - if peer, node, amount, retry := f.nextRequest(reqID); node != nil { - requesting = true - if reqID, ok := f.request(peer, reqID, node, amount); ok { - go func() { - time.Sleep(softRequestTimeout) - f.reqMu.Lock() - req, ok := f.requested[reqID] - if ok { - req.timeout = true - f.requested[reqID] = req - } - f.reqMu.Unlock() - // keep starting new requests while possible - f.requestChn <- false - }() - } - } else { - if retry { - requesting = true - go func() { - time.Sleep(time.Millisecond * 100) - f.requestChn <- false - }() - } + rq, reqID = f.nextRequest() + } + syncing := f.syncing + f.lock.Unlock() + + if rq != nil { + requesting = true + _, ok := <-f.pm.reqDist.queue(rq) + if !ok { + f.requestChn <- false + } + + if !syncing { + go func() { + time.Sleep(softRequestTimeout) + f.reqMu.Lock() + req, ok := f.requested[reqID] + if ok { + req.timeout = true + f.requested[reqID] = req + } + f.reqMu.Unlock() + // keep starting new requests while possible + f.requestChn <- false + }() } } - f.lock.Unlock() case reqID := <-f.timeoutChn: f.reqMu.Lock() req, ok := f.requested[reqID] @@ -334,6 +337,12 @@ func (f *lightFetcher) peerHasBlock(p *peer, hash common.Hash, number uint64) bo f.lock.Lock() defer f.lock.Unlock() + if f.syncing { + // always return true when syncing + // false positives are acceptable, a more sophisticated condition can be implemented later + return true + } + fp := f.peers[p] if fp == nil || fp.root == nil { return false @@ -346,43 +355,13 @@ func (f *lightFetcher) peerHasBlock(p *peer, hash common.Hash, number uint64) bo f.chain.LockChain() defer f.chain.UnlockChain() // if it's older than the peer's block tree root but it's in the same canonical chain - // than the root, we can still be sure the peer knows it + // as the root, we can still be sure the peer knows it + // + // when syncing, just check if it is part of the known chain, there is nothing better we + // can do since we do not know the most recent block hash yet return core.GetCanonicalHash(f.pm.chainDb, fp.root.number) == fp.root.hash && core.GetCanonicalHash(f.pm.chainDb, number) == hash } -// request initiates a header download request from a certain peer -func (f *lightFetcher) request(p *peer, reqID uint64, n *fetcherTreeNode, amount uint64) (uint64, bool) { - fp := f.peers[p] - if fp == nil { - p.Log().Debug("Requesting from unknown peer") - p.fcServer.DeassignRequest(reqID) - return 0, false - } - if fp.bestConfirmed == nil || fp.root == nil || !f.checkKnownNode(p, fp.root) { - f.syncing = true - go func() { - p.Log().Debug("Synchronisation started") - f.pm.synchronise(p) - f.syncDone <- p - }() - p.fcServer.DeassignRequest(reqID) - return 0, false - } - - n.requested = true - cost := p.GetRequestCost(GetBlockHeadersMsg, int(amount)) - p.fcServer.SendRequest(reqID, cost) - f.reqMu.Lock() - f.requested[reqID] = fetchRequest{hash: n.hash, amount: amount, peer: p, sent: mclock.Now()} - f.reqMu.Unlock() - go p.RequestHeadersByHash(reqID, cost, n.hash, int(amount), 0, true) - go func() { - time.Sleep(hardRequestTimeout) - f.timeoutChn <- reqID - }() - return reqID, true -} - // requestAmount calculates the amount of headers to be downloaded starting // from a certain head backwards func (f *lightFetcher) requestAmount(p *peer, n *fetcherTreeNode) uint64 { @@ -408,12 +387,13 @@ func (f *lightFetcher) requestedID(reqID uint64) bool { // nextRequest selects the peer and announced head to be requested next, amount // to be downloaded starting from the head backwards is also returned -func (f *lightFetcher) nextRequest(reqID uint64) (*peer, *fetcherTreeNode, uint64, bool) { +func (f *lightFetcher) nextRequest() (*distReq, uint64) { var ( bestHash common.Hash bestAmount uint64 ) bestTd := f.maxConfirmedTd + bestSyncing := false for p, fp := range f.peers { for hash, n := range fp.nodeByHash { @@ -423,29 +403,83 @@ func (f *lightFetcher) nextRequest(reqID uint64) (*peer, *fetcherTreeNode, uint6 bestHash = hash bestAmount = amount bestTd = n.td + bestSyncing = fp.bestConfirmed == nil || fp.root == nil || !f.checkKnownNode(p, fp.root) } } } } if bestTd == f.maxConfirmedTd { - return nil, nil, 0, false + return nil, 0 } - peer, _, locked := f.pm.serverPool.selectPeer(reqID, func(p *peer) (bool, time.Duration) { - fp := f.peers[p] - if fp == nil || fp.nodeByHash[bestHash] == nil { - return false, 0 + f.syncing = bestSyncing + + var rq *distReq + reqID := getNextReqID() + if f.syncing { + rq = &distReq{ + getCost: func(dp distPeer) uint64 { + return 0 + }, + canSend: func(dp distPeer) bool { + p := dp.(*peer) + fp := f.peers[p] + return fp != nil && fp.nodeByHash[bestHash] != nil + }, + request: func(dp distPeer) func() { + go func() { + p := dp.(*peer) + p.Log().Debug("Synchronisation started") + f.pm.synchronise(p) + f.syncDone <- p + }() + return nil + }, + } + } else { + rq = &distReq{ + getCost: func(dp distPeer) uint64 { + p := dp.(*peer) + return p.GetRequestCost(GetBlockHeadersMsg, int(bestAmount)) + }, + canSend: func(dp distPeer) bool { + p := dp.(*peer) + f.lock.Lock() + defer f.lock.Unlock() + + fp := f.peers[p] + if fp == nil { + return false + } + n := fp.nodeByHash[bestHash] + return n != nil && !n.requested + }, + request: func(dp distPeer) func() { + p := dp.(*peer) + f.lock.Lock() + fp := f.peers[p] + if fp != nil { + n := fp.nodeByHash[bestHash] + if n != nil { + n.requested = true + } + } + f.lock.Unlock() + + cost := p.GetRequestCost(GetBlockHeadersMsg, int(bestAmount)) + p.fcServer.QueueRequest(reqID, cost) + f.reqMu.Lock() + f.requested[reqID] = fetchRequest{hash: bestHash, amount: bestAmount, peer: p, sent: mclock.Now()} + f.reqMu.Unlock() + go func() { + time.Sleep(hardRequestTimeout) + f.timeoutChn <- reqID + }() + return func() { p.RequestHeadersByHash(reqID, cost, bestHash, int(bestAmount), 0, true) } + }, } - return true, p.fcServer.CanSend(p.GetRequestCost(GetBlockHeadersMsg, int(bestAmount))) - }) - if !locked { - return nil, nil, 0, true } - var node *fetcherTreeNode - if peer != nil { - node = f.peers[peer].nodeByHash[bestHash] - } - return peer, node, bestAmount, false + return rq, reqID } // deliverHeaders delivers header download request responses for processing diff --git a/les/flowcontrol/control.go b/les/flowcontrol/control.go index e45537cf5e..e40e693464 100644 --- a/les/flowcontrol/control.go +++ b/les/flowcontrol/control.go @@ -94,14 +94,12 @@ func (peer *ClientNode) RequestProcessed(cost uint64) (bv, realCost uint64) { } type ServerNode struct { - bufEstimate uint64 - lastTime mclock.AbsTime - params *ServerParams - sumCost uint64 // sum of req costs sent to this server - pending map[uint64]uint64 // value = sumCost after sending the given req - assignedRequest uint64 // when != 0, only the request with the given ID can be sent to this peer - assignToken chan struct{} // send to this channel before assigning, read from it after deassigning - lock sync.RWMutex + bufEstimate uint64 + lastTime mclock.AbsTime + params *ServerParams + sumCost uint64 // sum of req costs sent to this server + pending map[uint64]uint64 // value = sumCost after sending the given req + lock sync.RWMutex } func NewServerNode(params *ServerParams) *ServerNode { @@ -110,7 +108,6 @@ func NewServerNode(params *ServerParams) *ServerNode { lastTime: mclock.Now(), params: params, pending: make(map[uint64]uint64), - assignToken: make(chan struct{}, 1), } } @@ -127,94 +124,37 @@ func (peer *ServerNode) recalcBLE(time mclock.AbsTime) { } // safetyMargin is added to the flow control waiting time when estimated buffer value is low -const safetyMargin = time.Millisecond * 200 +const safetyMargin = time.Millisecond -func (peer *ServerNode) canSend(maxCost uint64) time.Duration { +func (peer *ServerNode) canSend(maxCost uint64) (time.Duration, float64) { + peer.recalcBLE(mclock.Now()) maxCost += uint64(safetyMargin) * peer.params.MinRecharge / uint64(fcTimeConst) if maxCost > peer.params.BufLimit { maxCost = peer.params.BufLimit } if peer.bufEstimate >= maxCost { - return 0 + return 0, float64(peer.bufEstimate-maxCost) / float64(peer.params.BufLimit) } - return time.Duration((maxCost - peer.bufEstimate) * uint64(fcTimeConst) / peer.params.MinRecharge) + return time.Duration((maxCost - peer.bufEstimate) * uint64(fcTimeConst) / peer.params.MinRecharge), 0 } // CanSend returns the minimum waiting time required before sending a request -// with the given maximum estimated cost -func (peer *ServerNode) CanSend(maxCost uint64) time.Duration { +// with the given maximum estimated cost. Second return value is the relative +// estimated buffer level after sending the request (divided by BufLimit). +func (peer *ServerNode) CanSend(maxCost uint64) (time.Duration, float64) { peer.lock.RLock() defer peer.lock.RUnlock() return peer.canSend(maxCost) } -// AssignRequest tries to assign the server node to the given request, guaranteeing -// that once it returns true, no request will be sent to the node before this one -func (peer *ServerNode) AssignRequest(reqID uint64) bool { - select { - case peer.assignToken <- struct{}{}: - default: - return false - } - peer.lock.Lock() - peer.assignedRequest = reqID - peer.lock.Unlock() - return true -} - -// MustAssignRequest waits until the node can be assigned to the given request. -// It is always guaranteed that assignments are released in a short amount of time. -func (peer *ServerNode) MustAssignRequest(reqID uint64) { - peer.assignToken <- struct{}{} - peer.lock.Lock() - peer.assignedRequest = reqID - peer.lock.Unlock() -} - -// DeassignRequest releases a request assignment in case the planned request -// is not being sent. -func (peer *ServerNode) DeassignRequest(reqID uint64) { - peer.lock.Lock() - if peer.assignedRequest == reqID { - peer.assignedRequest = 0 - <-peer.assignToken - } - peer.lock.Unlock() -} - -// IsAssigned returns true if the server node has already been assigned to a request -// (note that this function returning false does not guarantee that you can assign a request -// immediately afterwards, its only purpose is to help peer selection) -func (peer *ServerNode) IsAssigned() bool { - peer.lock.RLock() - locked := peer.assignedRequest != 0 - peer.lock.RUnlock() - return locked -} - -// blocks until request can be sent -func (peer *ServerNode) SendRequest(reqID, maxCost uint64) { +// QueueRequest should be called when the request has been assigned to the given +// server node, before putting it in the send queue. It is mandatory that requests +// are sent in the same order as the QueueRequest calls are made. +func (peer *ServerNode) QueueRequest(reqID, maxCost uint64) { peer.lock.Lock() defer peer.lock.Unlock() - if peer.assignedRequest != reqID { - peer.lock.Unlock() - peer.MustAssignRequest(reqID) - peer.lock.Lock() - } - - peer.recalcBLE(mclock.Now()) - wait := peer.canSend(maxCost) - for wait > 0 { - peer.lock.Unlock() - time.Sleep(wait) - peer.lock.Lock() - peer.recalcBLE(mclock.Now()) - wait = peer.canSend(maxCost) - } - peer.assignedRequest = 0 - <-peer.assignToken peer.bufEstimate -= maxCost peer.sumCost += maxCost if reqID >= 0 { @@ -222,6 +162,8 @@ func (peer *ServerNode) SendRequest(reqID, maxCost uint64) { } } +// GotReply adjusts estimated buffer value according to the value included in +// the latest request reply. func (peer *ServerNode) GotReply(reqID, bv uint64) { peer.lock.Lock() @@ -235,6 +177,10 @@ func (peer *ServerNode) GotReply(reqID, bv uint64) { return } delete(peer.pending, reqID) - peer.bufEstimate = bv - (peer.sumCost - sc) + cc := peer.sumCost - sc + peer.bufEstimate = 0 + if bv > cc { + peer.bufEstimate = bv - cc + } peer.lastTime = mclock.Now() } diff --git a/les/handler.go b/les/handler.go index 4271da8b8d..ece2060ee8 100644 --- a/les/handler.go +++ b/les/handler.go @@ -102,6 +102,7 @@ type ProtocolManager struct { odr *LesOdr server *LesServer serverPool *serverPool + reqDist *requestDistributor downloader *downloader.Downloader fetcher *lightFetcher @@ -203,8 +204,17 @@ func NewProtocolManager(chainConfig *params.ChainConfig, lightSync bool, network blockchain.InsertHeaderChain, nil, nil, blockchain.Rollback, removePeer) } + manager.reqDist = newRequestDistributor(func() map[distPeer]struct{} { + m := make(map[distPeer]struct{}) + peers := manager.peers.AllPeers() + for _, peer := range peers { + m[peer] = struct{}{} + } + return m + }, manager.quitSync) if odr != nil { odr.removePeer = removePeer + odr.reqDist = manager.reqDist } /*validator := func(block *types.Block, parent *types.Block) error { @@ -334,17 +344,49 @@ func (pm *ProtocolManager) handle(p *peer) error { if pm.lightSync { requestHeadersByHash := func(origin common.Hash, amount int, skip int, reverse bool) error { reqID := getNextReqID() - cost := p.GetRequestCost(GetBlockHeadersMsg, amount) - p.fcServer.MustAssignRequest(reqID) - p.fcServer.SendRequest(reqID, cost) - return p.RequestHeadersByHash(reqID, cost, origin, amount, skip, reverse) + rq := &distReq{ + getCost: func(dp distPeer) uint64 { + peer := dp.(*peer) + return peer.GetRequestCost(GetBlockHeadersMsg, amount) + }, + canSend: func(dp distPeer) bool { + return dp.(*peer) == p + }, + request: func(dp distPeer) func() { + peer := dp.(*peer) + cost := peer.GetRequestCost(GetBlockHeadersMsg, amount) + peer.fcServer.QueueRequest(reqID, cost) + return func() { peer.RequestHeadersByHash(reqID, cost, origin, amount, skip, reverse) } + }, + } + _, ok := <-pm.reqDist.queue(rq) + if !ok { + return ErrNoPeers + } + return nil } requestHeadersByNumber := func(origin uint64, amount int, skip int, reverse bool) error { reqID := getNextReqID() - cost := p.GetRequestCost(GetBlockHeadersMsg, amount) - p.fcServer.MustAssignRequest(reqID) - p.fcServer.SendRequest(reqID, cost) - return p.RequestHeadersByNumber(reqID, cost, origin, amount, skip, reverse) + rq := &distReq{ + getCost: func(dp distPeer) uint64 { + peer := dp.(*peer) + return peer.GetRequestCost(GetBlockHeadersMsg, amount) + }, + canSend: func(dp distPeer) bool { + return dp.(*peer) == p + }, + request: func(dp distPeer) func() { + peer := dp.(*peer) + cost := peer.GetRequestCost(GetBlockHeadersMsg, amount) + peer.fcServer.QueueRequest(reqID, cost) + return func() { peer.RequestHeadersByNumber(reqID, cost, origin, amount, skip, reverse) } + }, + } + _, ok := <-pm.reqDist.queue(rq) + if !ok { + return ErrNoPeers + } + return nil } if err := pm.downloader.RegisterPeer(p.id, ethVersion, p.HeadAndTd, requestHeadersByHash, requestHeadersByNumber, nil, nil, nil); err != nil { @@ -884,7 +926,13 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { } if deliverMsg != nil { - return pm.odr.Deliver(p, deliverMsg) + err := pm.odr.Deliver(p, deliverMsg) + if err != nil { + p.responseErrors++ + if p.responseErrors > maxResponseErrors { + return err + } + } } return nil } diff --git a/les/helper_test.go b/les/helper_test.go index f6293ad1a5..3e8ce57b6e 100644 --- a/les/helper_test.go +++ b/les/helper_test.go @@ -352,11 +352,15 @@ func (p *testServerPool) setPeer(peer *peer) { p.peer = peer } -func (p *testServerPool) selectPeerWait(uint64, func(*peer) (bool, time.Duration), <-chan struct{}) *peer { +func (p *testServerPool) getAllPeers() map[distPeer]struct{} { p.lock.RLock() defer p.lock.RUnlock() - return p.peer + m := make(map[distPeer]struct{}) + if p.peer != nil { + m[p.peer] = struct{}{} + } + return m } func (p *testServerPool) adjustResponseTime(*poolEntry, time.Duration, bool) { diff --git a/les/odr.go b/les/odr.go index afc894ab50..06b44d3186 100644 --- a/les/odr.go +++ b/les/odr.go @@ -32,14 +32,12 @@ import ( var ( softRequestTimeout = time.Millisecond * 500 hardRequestTimeout = time.Second * 10 - retryPeers = time.Second * 1 ) // peerDropFn is a callback type for dropping a peer detected as malicious. type peerDropFn func(id string) type odrPeerSelector interface { - selectPeerWait(uint64, func(*peer) (bool, time.Duration), <-chan struct{}) *peer adjustResponseTime(*poolEntry, time.Duration, bool) } @@ -51,6 +49,7 @@ type LesOdr struct { mlock, clock sync.Mutex sentReqs map[uint64]*sentReq serverPool odrPeerSelector + reqDist *requestDistributor } func NewLesOdr(db ethdb.Database) *LesOdr { @@ -165,18 +164,48 @@ func (self *LesOdr) requestPeer(req *sentReq, peer *peer, delivered, timeout cha func (self *LesOdr) networkRequest(ctx context.Context, lreq LesOdrRequest) error { answered := make(chan struct{}) req := &sentReq{ - valFunc: lreq.Valid, + valFunc: lreq.Validate, sentTo: make(map[*peer]chan struct{}), answered: answered, // reply delivered by any peer } - reqID := getNextReqID() - self.mlock.Lock() - self.sentReqs[reqID] = req - self.mlock.Unlock() + + exclude := make(map[*peer]struct{}) reqWg := new(sync.WaitGroup) reqWg.Add(1) defer reqWg.Done() + + var timeout chan struct{} + reqID := getNextReqID() + rq := &distReq{ + getCost: func(dp distPeer) uint64 { + return lreq.GetCost(dp.(*peer)) + }, + canSend: func(dp distPeer) bool { + p := dp.(*peer) + _, ok := exclude[p] + return !ok && lreq.CanSend(p) + }, + request: func(dp distPeer) func() { + p := dp.(*peer) + exclude[p] = struct{}{} + delivered := make(chan struct{}) + timeout = make(chan struct{}) + req.lock.Lock() + req.sentTo[p] = delivered + req.lock.Unlock() + reqWg.Add(1) + cost := lreq.GetCost(p) + p.fcServer.QueueRequest(reqID, cost) + go self.requestPeer(req, p, delivered, timeout, reqWg) + return func() { lreq.Request(reqID, p) } + }, + } + + self.mlock.Lock() + self.sentReqs[reqID] = req + self.mlock.Unlock() + go func() { reqWg.Wait() self.mlock.Lock() @@ -184,50 +213,32 @@ func (self *LesOdr) networkRequest(ctx context.Context, lreq LesOdrRequest) erro self.mlock.Unlock() }() - exclude := make(map[*peer]struct{}) for { - var p *peer - if self.serverPool != nil { - p = self.serverPool.selectPeerWait(reqID, func(p *peer) (bool, time.Duration) { - if _, ok := exclude[p]; ok || !lreq.CanSend(p) { - return false, 0 - } - return true, p.fcServer.CanSend(lreq.GetCost(p)) - }, ctx.Done()) + peerChn := self.reqDist.queue(rq) + select { + case <-ctx.Done(): + self.reqDist.cancel(rq) + return ctx.Err() + case <-answered: + self.reqDist.cancel(rq) + return nil + case _, ok := <-peerChn: + if !ok { + return ErrNoPeers + } } - if p == nil { - select { - case <-ctx.Done(): - return ctx.Err() - case <-req.answered: - return nil - case <-time.After(retryPeers): - } - } else { - exclude[p] = struct{}{} - delivered := make(chan struct{}) - timeout := make(chan struct{}) - req.lock.Lock() - req.sentTo[p] = delivered - req.lock.Unlock() - reqWg.Add(1) - cost := lreq.GetCost(p) - p.fcServer.SendRequest(reqID, cost) - go self.requestPeer(req, p, delivered, timeout, reqWg) - lreq.Request(reqID, p) - select { - case <-ctx.Done(): - return ctx.Err() - case <-answered: - return nil - case <-timeout: - } + select { + case <-ctx.Done(): + return ctx.Err() + case <-answered: + return nil + case <-timeout: } } } -// Retrieve tries to fetch an object from the local db, then from the LES network. +// Retrieve tries to fetch an object from the LES network. // If the network retrieval was successful, it stores the object in local db. func (self *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err error) { lreq := LesRequest(req) diff --git a/les/odr_requests.go b/les/odr_requests.go index 53aced93c6..1f853b3417 100644 --- a/les/odr_requests.go +++ b/les/odr_requests.go @@ -49,7 +49,7 @@ type LesOdrRequest interface { GetCost(*peer) uint64 CanSend(*peer) bool Request(uint64, *peer) error - Valid(ethdb.Database, *Msg) error // if true, keeps the retrieved object + Validate(ethdb.Database, *Msg) error } func LesRequest(req light.OdrRequest) LesOdrRequest { @@ -92,7 +92,7 @@ func (r *BlockRequest) Request(reqID uint64, peer *peer) error { // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (r *BlockRequest) Valid(db ethdb.Database, msg *Msg) error { +func (r *BlockRequest) Validate(db ethdb.Database, msg *Msg) error { log.Debug("Validating block body", "hash", r.Hash) // Ensure we have a correct message with a single block body @@ -148,7 +148,7 @@ func (r *ReceiptsRequest) Request(reqID uint64, peer *peer) error { // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (r *ReceiptsRequest) Valid(db ethdb.Database, msg *Msg) error { +func (r *ReceiptsRequest) Validate(db ethdb.Database, msg *Msg) error { log.Debug("Validating block receipts", "hash", r.Hash) // Ensure we have a correct message with a single block receipt @@ -208,7 +208,7 @@ func (r *TrieRequest) Request(reqID uint64, peer *peer) error { // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (r *TrieRequest) Valid(db ethdb.Database, msg *Msg) error { +func (r *TrieRequest) Validate(db ethdb.Database, msg *Msg) error { log.Debug("Validating trie proof", "root", r.Id.Root, "key", r.Key) // Ensure we have a correct message with a single proof @@ -259,7 +259,7 @@ func (r *CodeRequest) Request(reqID uint64, peer *peer) error { // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (r *CodeRequest) Valid(db ethdb.Database, msg *Msg) error { +func (r *CodeRequest) Validate(db ethdb.Database, msg *Msg) error { log.Debug("Validating code data", "hash", r.Hash) // Ensure we have a correct message with a single code element @@ -319,7 +319,7 @@ func (r *ChtRequest) Request(reqID uint64, peer *peer) error { // Valid processes an ODR request reply message from the LES network // returns true and stores results in memory if the message was a valid reply // to the request (implementation of LesOdrRequest) -func (r *ChtRequest) Valid(db ethdb.Database, msg *Msg) error { +func (r *ChtRequest) Validate(db ethdb.Database, msg *Msg) error { log.Debug("Validating CHT", "cht", r.ChtNum, "block", r.BlockNum) // Ensure we have a correct message with a single proof element diff --git a/les/odr_test.go b/les/odr_test.go index 4f1fccb248..1b436b8e6e 100644 --- a/les/odr_test.go +++ b/les/odr_test.go @@ -162,8 +162,11 @@ func testOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { lpm, ldb, odr := newTestProtocolManagerMust(t, true, 0, nil) _, err1, lpeer, err2 := newTestPeerPair("peer", protocol, pm, lpm) pool := &testServerPool{} + lpm.reqDist = newRequestDistributor(pool.getAllPeers, lpm.quitSync) + odr.reqDist = lpm.reqDist pool.setPeer(lpeer) odr.serverPool = pool + lpeer.hasBlock = func(common.Hash, uint64) bool { return true } select { case <-time.After(time.Millisecond * 100): case err := <-err1: diff --git a/les/peer.go b/les/peer.go index ef5f8a6ce2..4793da2963 100644 --- a/les/peer.go +++ b/les/peer.go @@ -22,6 +22,7 @@ import ( "fmt" "math/big" "sync" + "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" @@ -37,7 +38,10 @@ var ( errNotRegistered = errors.New("peer is not registered") ) -const maxHeadInfoLen = 20 +const ( + maxHeadInfoLen = 20 + maxResponseErrors = 50 // number of invalid responses tolerated (makes the protocol less brittle but still avoids spam) +) type peer struct { *p2p.Peer @@ -53,9 +57,11 @@ type peer struct { lock sync.RWMutex announceChn chan announceData + sendQueue *execQueue - poolEntry *poolEntry - hasBlock func(common.Hash, uint64) bool + poolEntry *poolEntry + hasBlock func(common.Hash, uint64) bool + responseErrors int fcClient *flowcontrol.ClientNode // nil if the peer is server only fcServer *flowcontrol.ServerNode // nil if the peer is client only @@ -76,6 +82,14 @@ func newPeer(version, network int, p *p2p.Peer, rw p2p.MsgReadWriter) *peer { } } +func (p *peer) canQueue() bool { + return p.sendQueue.canQueue() +} + +func (p *peer) queueSend(f func()) { + p.sendQueue.queue(f) +} + // Info gathers and returns a collection of metadata known about a peer. func (p *peer) Info() *eth.PeerInfo { return ð.PeerInfo{ @@ -117,6 +131,11 @@ func (p *peer) Td() *big.Int { return new(big.Int).Set(p.headInfo.Td) } +// waitBefore implements distPeer interface +func (p *peer) waitBefore(maxCost uint64) (time.Duration, float64) { + return p.fcServer.CanSend(maxCost) +} + func sendRequest(w p2p.MsgWriter, msgcode, reqID, cost uint64, data interface{}) error { type req struct { ReqID uint64 @@ -237,11 +256,8 @@ func (p *peer) RequestHeaderProofs(reqID, cost uint64, reqs []*ChtReq) error { return sendRequest(p.rw, GetHeaderProofsMsg, reqID, cost, reqs) } -func (p *peer) SendTxs(cost uint64, txs types.Transactions) error { +func (p *peer) SendTxs(reqID, cost uint64, txs types.Transactions) error { p.Log().Debug("Fetching batch of transactions", "count", len(txs)) - reqID := getNextReqID() - p.fcServer.MustAssignRequest(reqID) - p.fcServer.SendRequest(reqID, cost) return p2p.Send(p.rw, SendTxMsg, txs) } @@ -444,6 +460,7 @@ func (ps *peerSet) Register(p *peer) error { return errAlreadyRegistered } ps.peers[p.id] = p + p.sendQueue = newExecQueue(100) return nil } @@ -453,8 +470,10 @@ func (ps *peerSet) Unregister(id string) error { ps.lock.Lock() defer ps.lock.Unlock() - if _, ok := ps.peers[id]; !ok { + if p, ok := ps.peers[id]; !ok { return errNotRegistered + } else { + p.sendQueue.quit() } delete(ps.peers, id) return nil diff --git a/les/request_test.go b/les/request_test.go index 10e9edf8be..bec6bf1bc1 100644 --- a/les/request_test.go +++ b/les/request_test.go @@ -72,8 +72,11 @@ func testAccess(t *testing.T, protocol int, fn accessTestFn) { lpm, ldb, odr := newTestProtocolManagerMust(t, true, 0, nil) _, err1, lpeer, err2 := newTestPeerPair("peer", protocol, pm, lpm) pool := &testServerPool{} + lpm.reqDist = newRequestDistributor(pool.getAllPeers, lpm.quitSync) + odr.reqDist = lpm.reqDist pool.setPeer(lpeer) odr.serverPool = pool + lpeer.hasBlock = func(common.Hash, uint64) bool { return true } select { case <-time.After(time.Millisecond * 100): case err := <-err1: diff --git a/les/serverpool.go b/les/serverpool.go index 55d481dbf4..64fe991c63 100644 --- a/les/serverpool.go +++ b/les/serverpool.go @@ -268,82 +268,6 @@ func (pool *serverPool) adjustResponseTime(entry *poolEntry, time time.Duration, } } -type selectPeerItem struct { - peer *peer - weight int64 - wait time.Duration -} - -func (sp selectPeerItem) Weight() int64 { - return sp.weight -} - -// selectPeer selects a suitable peer for a request, also returning a necessary waiting time to perform the request -// and a "locked" flag meaning that the request has been assigned to the given peer and its execution is guaranteed -// after the given waiting time. If locked flag is false, selectPeer should be called again after the waiting time. -func (pool *serverPool) selectPeer(reqID uint64, canSend func(*peer) (bool, time.Duration)) (*peer, time.Duration, bool) { - pool.lock.Lock() - type selectPeer struct { - peer *peer - rstat, tstat float64 - } - var list []selectPeer - sel := newWeightedRandomSelect() - for _, entry := range pool.entries { - if entry.state == psRegistered { - if !entry.peer.fcServer.IsAssigned() { - list = append(list, selectPeer{entry.peer, entry.responseStats.recentAvg(), entry.timeoutStats.recentAvg()}) - } - } - } - pool.lock.Unlock() - - for _, sp := range list { - ok, wait := canSend(sp.peer) - if ok { - w := int64(1000000000 * (peerSelectMinWeight + math.Exp(-(sp.rstat+float64(wait))/float64(responseScoreTC))*math.Pow((1-sp.tstat), timeoutPow))) - sel.update(selectPeerItem{peer: sp.peer, weight: w, wait: wait}) - } - } - choice := sel.choose() - if choice == nil { - return nil, 0, false - } - peer, wait := choice.(selectPeerItem).peer, choice.(selectPeerItem).wait - locked := false - if wait < time.Millisecond*100 { - if peer.fcServer.AssignRequest(reqID) { - ok, w := canSend(peer) - wait = time.Duration(w) - if ok && wait < time.Millisecond*100 { - locked = true - } else { - peer.fcServer.DeassignRequest(reqID) - wait = time.Millisecond * 100 - } - } - } else { - wait = time.Millisecond * 100 - } - return peer, wait, locked -} - -// selectPeer selects a suitable peer for a request, waiting until an assignment to -// the request is guaranteed or the process is aborted. -func (pool *serverPool) selectPeerWait(reqID uint64, canSend func(*peer) (bool, time.Duration), abort <-chan struct{}) *peer { - for { - peer, wait, locked := pool.selectPeer(reqID, canSend) - if locked { - return peer - } - select { - case <-abort: - return nil - case <-time.After(wait): - } - } -} - // eventLoop handles pool events and mutex locking for all internal functions func (pool *serverPool) eventLoop() { lookupCnt := 0 diff --git a/les/txrelay.go b/les/txrelay.go index 76d416c57a..1ca3467e4d 100644 --- a/les/txrelay.go +++ b/les/txrelay.go @@ -35,13 +35,14 @@ type LesTxRelay struct { peerList []*peer peerStartPos int lock sync.RWMutex + + reqDist *requestDistributor } func NewLesTxRelay() *LesTxRelay { return &LesTxRelay{ txSent: make(map[common.Hash]*ltrInfo), txPending: make(map[common.Hash]struct{}), - ps: newPeerSet(), } } @@ -108,10 +109,26 @@ func (self *LesTxRelay) send(txs types.Transactions, count int) { } for p, list := range sendTo { - cost := p.GetRequestCost(SendTxMsg, len(list)) - go func(p *peer, list types.Transactions, cost uint64) { - p.SendTxs(cost, list) - }(p, list, cost) + pp := p + ll := list + + reqID := getNextReqID() + rq := &distReq{ + getCost: func(dp distPeer) uint64 { + peer := dp.(*peer) + return peer.GetRequestCost(SendTxMsg, len(ll)) + }, + canSend: func(dp distPeer) bool { + return dp.(*peer) == pp + }, + request: func(dp distPeer) func() { + peer := dp.(*peer) + cost := peer.GetRequestCost(SendTxMsg, len(ll)) + peer.fcServer.QueueRequest(reqID, cost) + return func() { peer.SendTxs(reqID, cost, ll) } + }, + } + self.reqDist.queue(rq) } } diff --git a/light/lightchain.go b/light/lightchain.go index 4370dc0fcc..4715d47ab8 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -20,6 +20,7 @@ import ( "math/big" "sync" "sync/atomic" + "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" @@ -369,9 +370,17 @@ func (self *LightChain) postChainEvents(events []interface{}) { // In the case of a light chain, InsertHeaderChain also creates and posts light // chain events when necessary. func (self *LightChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error) { + start := time.Now() + if i, err := self.hc.ValidateHeaderChain(chain, checkFreq); err != nil { + return i, err + } + // Make sure only one thread manipulates the chain at once self.chainmu.Lock() - defer self.chainmu.Unlock() + defer func() { + self.chainmu.Unlock() + time.Sleep(time.Millisecond * 10) // ugly hack; do not hog chain lock in case syncing is CPU-limited by validation + }() self.wg.Add(1) defer self.wg.Done() @@ -397,7 +406,7 @@ func (self *LightChain) InsertHeaderChain(chain []*types.Header, checkFreq int) } return err } - i, err := self.hc.InsertHeaderChain(chain, checkFreq, whFunc) + i, err := self.hc.InsertHeaderChain(chain, whFunc, start) go self.postChainEvents(events) return i, err } diff --git a/light/txpool.go b/light/txpool.go index 28c8d8ca5b..5eb1ba8015 100644 --- a/light/txpool.go +++ b/light/txpool.go @@ -276,15 +276,17 @@ func (pool *TxPool) setNewHead(ctx context.Context, newHeader *types.Header) (tx // clear old mined tx entries of old blocks if idx := newHeader.Number.Uint64(); idx > pool.clearIdx+txPermanent { idx2 := idx - txPermanent - for i := pool.clearIdx; i < idx2; i++ { - hash := core.GetCanonicalHash(pool.chainDb, i) - if list, ok := pool.mined[hash]; ok { - hashes := make([]common.Hash, len(list)) - for i, tx := range list { - hashes[i] = tx.Hash() + if len(pool.mined) > 0 { + for i := pool.clearIdx; i < idx2; i++ { + hash := core.GetCanonicalHash(pool.chainDb, i) + if list, ok := pool.mined[hash]; ok { + hashes := make([]common.Hash, len(list)) + for i, tx := range list { + hashes[i] = tx.Hash() + } + pool.relay.Discard(hashes) + delete(pool.mined, hash) } - pool.relay.Discard(hashes) - delete(pool.mined, hash) } } pool.clearIdx = idx2 @@ -303,15 +305,16 @@ func (pool *TxPool) eventLoop() { for ev := range pool.events.Chan() { switch ev.Data.(type) { case core.ChainHeadEvent: + head := pool.chain.CurrentHeader() pool.mu.Lock() ctx, _ := context.WithTimeout(context.Background(), blockCheckTimeout) - head := pool.chain.CurrentHeader() txc, _ := pool.setNewHead(ctx, head) m, r := txc.getLists() pool.relay.NewHead(pool.head, m, r) pool.homestead = pool.config.IsHomestead(head.Number) pool.signer = types.MakeSigner(pool.config, head.Number) pool.mu.Unlock() + time.Sleep(time.Millisecond) // hack in order to avoid hogging the lock; this part will be replaced by a subsequent PR } } } From c213fd1fd8bb624241da7fc98cf25098d8b92761 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Wed, 22 Mar 2017 18:20:33 +0100 Subject: [PATCH 29/57] all: import "context" instead of "golang.org/x/net/context" There is no need to depend on the old context package now that the minimum Go version is 1.7. The move to "context" eliminates our weird vendoring setup. Some vendored code still uses golang.org/x/net/context and it is now vendored in the normal way. This change triggered new vet checks around context.WithTimeout which didn't fire with golang.org/x/net/context. --- accounts/abi/bind/backend.go | 2 +- accounts/abi/bind/backends/simulated.go | 2 +- accounts/abi/bind/base.go | 2 +- accounts/abi/bind/util.go | 2 +- accounts/abi/bind/util_test.go | 2 +- accounts/usbwallet/ledger_wallet.go | 2 +- build/_vendor/src/golang.org/x/net/LICENSE | 27 ------- build/ci-notes.md | 15 ---- contracts/chequebook/cheque.go | 2 +- contracts/release/release.go | 74 ++++++++++--------- eth/api.go | 2 +- eth/api_backend.go | 2 +- eth/bind.go | 2 +- eth/downloader/api.go | 2 +- eth/filters/api.go | 3 +- eth/filters/filter.go | 5 +- eth/filters/filter_system.go | 5 +- eth/filters/filter_system_test.go | 3 +- eth/filters/filter_test.go | 3 +- eth/gasprice/lightprice.go | 2 +- ethclient/ethclient.go | 2 +- event/subscription.go | 2 +- event/subscription_test.go | 3 +- interfaces.go | 2 +- internal/build/util.go | 13 +--- internal/ethapi/api.go | 2 +- internal/ethapi/backend.go | 2 +- les/api_backend.go | 2 +- les/odr.go | 2 +- les/odr_test.go | 7 +- les/request_test.go | 6 +- les/sync.go | 6 +- light/lightchain.go | 2 +- light/lightchain_test.go | 2 +- light/odr.go | 2 +- light/odr_test.go | 7 +- light/odr_util.go | 2 +- light/state.go | 2 +- light/state_object.go | 2 +- light/state_test.go | 2 +- light/trie.go | 3 +- light/txpool.go | 34 +++++---- light/txpool_test.go | 5 +- light/vm_env.go | 2 +- mobile/context.go | 3 +- rpc/client.go | 2 +- rpc/client_context_go1.4.go | 60 --------------- rpc/client_context_go1.5.go | 61 --------------- rpc/client_context_go1.6.go | 55 -------------- rpc/client_context_go1.7.go | 51 ------------- rpc/client_example_test.go | 2 +- rpc/client_test.go | 2 +- rpc/http.go | 6 +- rpc/inproc.go | 3 +- rpc/ipc.go | 3 +- rpc/ipc_unix.go | 3 +- rpc/ipc_windows.go | 2 +- rpc/server.go | 3 +- rpc/server_test.go | 3 +- rpc/subscription.go | 3 +- rpc/subscription_test.go | 3 +- rpc/utils.go | 3 +- rpc/websocket.go | 19 ++++- swarm/services/swap/swap.go | 2 +- swarm/swarm.go | 2 +- .../golang.org/x/net/context/context.go | 30 ++++---- .../golang.org/x/net/context/go17.go | 4 +- .../golang.org/x/net/context/pre_go17.go | 18 ++--- vendor/vendor.json | 8 +- 69 files changed, 187 insertions(+), 437 deletions(-) delete mode 100644 build/_vendor/src/golang.org/x/net/LICENSE delete mode 100644 rpc/client_context_go1.4.go delete mode 100644 rpc/client_context_go1.5.go delete mode 100644 rpc/client_context_go1.6.go delete mode 100644 rpc/client_context_go1.7.go rename {build/_vendor/src => vendor}/golang.org/x/net/context/context.go (82%) rename {build/_vendor/src => vendor}/golang.org/x/net/context/go17.go (96%) rename {build/_vendor/src => vendor}/golang.org/x/net/context/pre_go17.go (93%) diff --git a/accounts/abi/bind/backend.go b/accounts/abi/bind/backend.go index 4509e222d5..25b61928e1 100644 --- a/accounts/abi/bind/backend.go +++ b/accounts/abi/bind/backend.go @@ -17,13 +17,13 @@ package bind import ( + "context" "errors" "math/big" "github.com/ethereum/go-ethereum" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" - "golang.org/x/net/context" ) var ( diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go index 2e6796de60..2f5719c783 100644 --- a/accounts/abi/bind/backends/simulated.go +++ b/accounts/abi/bind/backends/simulated.go @@ -17,6 +17,7 @@ package backends import ( + "context" "errors" "fmt" "math/big" @@ -34,7 +35,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" - "golang.org/x/net/context" ) // Default chain configuration which sets homestead phase at block 0 (i.e. no frontier) diff --git a/accounts/abi/bind/base.go b/accounts/abi/bind/base.go index 93362d9e9a..b40bd65e80 100644 --- a/accounts/abi/bind/base.go +++ b/accounts/abi/bind/base.go @@ -17,6 +17,7 @@ package bind import ( + "context" "errors" "fmt" "math/big" @@ -26,7 +27,6 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/crypto" - "golang.org/x/net/context" ) // SignerFn is a signer function callback when a contract requires a method to diff --git a/accounts/abi/bind/util.go b/accounts/abi/bind/util.go index 8348f69801..d129993ca1 100644 --- a/accounts/abi/bind/util.go +++ b/accounts/abi/bind/util.go @@ -17,13 +17,13 @@ package bind import ( + "context" "fmt" "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/log" - "golang.org/x/net/context" ) // WaitMined waits for tx to be mined on the blockchain. diff --git a/accounts/abi/bind/util_test.go b/accounts/abi/bind/util_test.go index f31dbfc298..b37a69cfca 100644 --- a/accounts/abi/bind/util_test.go +++ b/accounts/abi/bind/util_test.go @@ -17,6 +17,7 @@ package bind_test import ( + "context" "math/big" "testing" "time" @@ -27,7 +28,6 @@ import ( "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/crypto" - "golang.org/x/net/context" ) var testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") diff --git a/accounts/usbwallet/ledger_wallet.go b/accounts/usbwallet/ledger_wallet.go index c3d0f0ac85..698e85f48b 100644 --- a/accounts/usbwallet/ledger_wallet.go +++ b/accounts/usbwallet/ledger_wallet.go @@ -21,6 +21,7 @@ package usbwallet import ( + "context" "encoding/binary" "encoding/hex" "errors" @@ -38,7 +39,6 @@ import ( "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/rlp" "github.com/karalabe/hid" - "golang.org/x/net/context" ) // Maximum time between wallet health checks to detect USB unplugs. diff --git a/build/_vendor/src/golang.org/x/net/LICENSE b/build/_vendor/src/golang.org/x/net/LICENSE deleted file mode 100644 index 6a66aea5ea..0000000000 --- a/build/_vendor/src/golang.org/x/net/LICENSE +++ /dev/null @@ -1,27 +0,0 @@ -Copyright (c) 2009 The Go Authors. All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the following disclaimer -in the documentation and/or other materials provided with the -distribution. - * Neither the name of Google Inc. nor the names of its -contributors may be used to endorse or promote products derived from -this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/build/ci-notes.md b/build/ci-notes.md index 92e7c54d0a..cd2ba8bb2b 100644 --- a/build/ci-notes.md +++ b/build/ci-notes.md @@ -1,18 +1,3 @@ -# Vendored Dependencies - -Dependencies are almost all vendored in at the standard Go `/vendor` path. This allows -people to build go-ethereum using the standard toolchain without any particular package -manager. It also plays nicely with `go get`, not requiring external code to be relied on. - -The one single dependent package missing from `vendor` is `golang.org/x/net/context`. As -this is a package exposed via public library APIs, it must not be vendored as dependent -code woulnd't be able to instantiate. - -To allow reproducible builds of go-ethereum nonetheless that don't need network access -during build time to fetch `golang.org/x/net/context`, a version was copied into our repo -at the very specific `/build/_vendor` path, which is added automatically by all CI build -scripts and the makefile too. - # Debian Packaging Tagged releases and develop branch commits are available as installable Debian packages diff --git a/contracts/chequebook/cheque.go b/contracts/chequebook/cheque.go index 945e56e863..7e0f7eafc3 100644 --- a/contracts/chequebook/cheque.go +++ b/contracts/chequebook/cheque.go @@ -26,6 +26,7 @@ package chequebook import ( "bytes" + "context" "crypto/ecdsa" "encoding/json" "fmt" @@ -43,7 +44,6 @@ import ( "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/swarm/services/swap/swap" - "golang.org/x/net/context" ) // TODO(zelig): watch peer solvency and notify of bouncing cheques diff --git a/contracts/release/release.go b/contracts/release/release.go index 613e62aa9c..28a35381d4 100644 --- a/contracts/release/release.go +++ b/contracts/release/release.go @@ -20,6 +20,7 @@ package release //go:generate abigen --sol ./contract.sol --pkg release --out ./contract.go import ( + "context" "fmt" "strings" "time" @@ -33,7 +34,6 @@ import ( "github.com/ethereum/go-ethereum/node" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // Interval to check for new releases @@ -116,47 +116,49 @@ func (r *ReleaseService) checker() { for { select { - // If the time arrived, check for a new release case <-timer.C: // Rechedule the timer before continuing timer.Reset(releaseRecheckInterval) - - // Retrieve the current version, and handle missing contracts gracefully - ctx, _ := context.WithTimeout(context.Background(), time.Second*5) - opts := &bind.CallOpts{Context: ctx} - version, err := r.oracle.CurrentVersion(opts) - if err != nil { - if err == bind.ErrNoCode { - log.Debug("Release oracle not found", "contract", r.config.Oracle) - continue - } - log.Error("Failed to retrieve current release", "err", err) - continue - } - // Version was successfully retrieved, notify if newer than ours - if version.Major > r.config.Major || - (version.Major == r.config.Major && version.Minor > r.config.Minor) || - (version.Major == r.config.Major && version.Minor == r.config.Minor && version.Patch > r.config.Patch) { - - warning := fmt.Sprintf("Client v%d.%d.%d-%x seems older than the latest upstream release v%d.%d.%d-%x", - r.config.Major, r.config.Minor, r.config.Patch, r.config.Commit[:4], version.Major, version.Minor, version.Patch, version.Commit[:4]) - howtofix := fmt.Sprintf("Please check https://github.com/ethereum/go-ethereum/releases for new releases") - separator := strings.Repeat("-", len(warning)) - - log.Warn(separator) - log.Warn(warning) - log.Warn(howtofix) - log.Warn(separator) - } else { - log.Debug("Client seems up to date with upstream", - "local", fmt.Sprintf("v%d.%d.%d-%x", r.config.Major, r.config.Minor, r.config.Patch, r.config.Commit[:4]), - "upstream", fmt.Sprintf("v%d.%d.%d-%x", version.Major, version.Minor, version.Patch, version.Commit[:4])) - } - - // If termination was requested, return + r.checkVersion() case errc := <-r.quit: errc <- nil return } } } + +func (r *ReleaseService) checkVersion() { + // Retrieve the current version, and handle missing contracts gracefully + ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) + opts := &bind.CallOpts{Context: ctx} + defer cancel() + + version, err := r.oracle.CurrentVersion(opts) + if err != nil { + if err == bind.ErrNoCode { + log.Debug("Release oracle not found", "contract", r.config.Oracle) + } else { + log.Error("Failed to retrieve current release", "err", err) + } + return + } + // Version was successfully retrieved, notify if newer than ours + if version.Major > r.config.Major || + (version.Major == r.config.Major && version.Minor > r.config.Minor) || + (version.Major == r.config.Major && version.Minor == r.config.Minor && version.Patch > r.config.Patch) { + + warning := fmt.Sprintf("Client v%d.%d.%d-%x seems older than the latest upstream release v%d.%d.%d-%x", + r.config.Major, r.config.Minor, r.config.Patch, r.config.Commit[:4], version.Major, version.Minor, version.Patch, version.Commit[:4]) + howtofix := fmt.Sprintf("Please check https://github.com/ethereum/go-ethereum/releases for new releases") + separator := strings.Repeat("-", len(warning)) + + log.Warn(separator) + log.Warn(warning) + log.Warn(howtofix) + log.Warn(separator) + } else { + log.Debug("Client seems up to date with upstream", + "local", fmt.Sprintf("v%d.%d.%d-%x", r.config.Major, r.config.Minor, r.config.Patch, r.config.Commit[:4]), + "upstream", fmt.Sprintf("v%d.%d.%d-%x", version.Major, version.Minor, version.Patch, version.Commit[:4])) + } +} diff --git a/eth/api.go b/eth/api.go index b17968ebb2..b64153fd72 100644 --- a/eth/api.go +++ b/eth/api.go @@ -19,6 +19,7 @@ package eth import ( "bytes" "compress/gzip" + "context" "errors" "fmt" "io" @@ -39,7 +40,6 @@ import ( "github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" - "golang.org/x/net/context" ) const defaultTraceTimeout = 5 * time.Second diff --git a/eth/api_backend.go b/eth/api_backend.go index bce772900d..418a344354 100644 --- a/eth/api_backend.go +++ b/eth/api_backend.go @@ -17,6 +17,7 @@ package eth import ( + "context" "math/big" "github.com/ethereum/go-ethereum/accounts" @@ -33,7 +34,6 @@ import ( "github.com/ethereum/go-ethereum/internal/ethapi" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // EthApiBackend implements ethapi.Backend for full nodes diff --git a/eth/bind.go b/eth/bind.go index 2ee9f2bf7b..2459341834 100644 --- a/eth/bind.go +++ b/eth/bind.go @@ -17,6 +17,7 @@ package eth import ( + "context" "math/big" "github.com/ethereum/go-ethereum" @@ -26,7 +27,6 @@ import ( "github.com/ethereum/go-ethereum/internal/ethapi" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // ContractBackend implements bind.ContractBackend with direct calls to Ethereum diff --git a/eth/downloader/api.go b/eth/downloader/api.go index e41376810f..d496fa6a4d 100644 --- a/eth/downloader/api.go +++ b/eth/downloader/api.go @@ -17,12 +17,12 @@ package downloader import ( + "context" "sync" ethereum "github.com/ethereum/go-ethereum" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // PublicDownloaderAPI provides an API which gives information about the current synchronisation status. diff --git a/eth/filters/api.go b/eth/filters/api.go index 02a544ce1b..61647a5d07 100644 --- a/eth/filters/api.go +++ b/eth/filters/api.go @@ -17,6 +17,7 @@ package filters import ( + "context" "encoding/json" "errors" "fmt" @@ -24,8 +25,6 @@ import ( "sync" "time" - "golang.org/x/net/context" - "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/core/types" diff --git a/eth/filters/filter.go b/eth/filters/filter.go index 9a8e2fd70a..0a0b81224e 100644 --- a/eth/filters/filter.go +++ b/eth/filters/filter.go @@ -17,10 +17,10 @@ package filters import ( + "context" "math" - "time" - "math/big" + "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" @@ -28,7 +28,6 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) type Backend interface { diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go index 3adf8111ad..7abace1e6b 100644 --- a/eth/filters/filter_system.go +++ b/eth/filters/filter_system.go @@ -19,6 +19,7 @@ package filters import ( + "context" "errors" "fmt" "sync" @@ -29,7 +30,6 @@ import ( "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // Type determines the kind of filter and is used to put the filter in to @@ -372,7 +372,8 @@ func (es *EventSystem) lightFilterNewHead(newHeader *types.Header, callBack func func (es *EventSystem) lightFilterLogs(header *types.Header, addresses []common.Address, topics [][]common.Hash, remove bool) []*types.Log { if bloomFilter(header.Bloom, addresses, topics) { // Get the logs of the block - ctx, _ := context.WithTimeout(context.Background(), time.Second*5) + ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) + defer cancel() receipts, err := es.backend.GetReceipts(ctx, header.Hash()) if err != nil { return nil diff --git a/eth/filters/filter_system_test.go b/eth/filters/filter_system_test.go index 1cfced7e41..d9c245a854 100644 --- a/eth/filters/filter_system_test.go +++ b/eth/filters/filter_system_test.go @@ -17,13 +17,12 @@ package filters import ( + "context" "math/big" "reflect" "testing" "time" - "golang.org/x/net/context" - "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" diff --git a/eth/filters/filter_test.go b/eth/filters/filter_test.go index 83ff3e9ce0..c2dc2b8428 100644 --- a/eth/filters/filter_test.go +++ b/eth/filters/filter_test.go @@ -17,13 +17,12 @@ package filters import ( + "context" "io/ioutil" "math/big" "os" "testing" - "golang.org/x/net/context" - "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" diff --git a/eth/gasprice/lightprice.go b/eth/gasprice/lightprice.go index 8886d32d7d..562c7dd974 100644 --- a/eth/gasprice/lightprice.go +++ b/eth/gasprice/lightprice.go @@ -17,6 +17,7 @@ package gasprice import ( + "context" "math/big" "sort" "sync" @@ -24,7 +25,6 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/internal/ethapi" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) const ( diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go index 1d04d9e032..59f60d6598 100644 --- a/ethclient/ethclient.go +++ b/ethclient/ethclient.go @@ -18,6 +18,7 @@ package ethclient import ( + "context" "encoding/json" "fmt" "math/big" @@ -28,7 +29,6 @@ import ( "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // Client defines typed wrappers for the Ethereum RPC API. diff --git a/event/subscription.go b/event/subscription.go index 83bd21213d..02d7b9d7d4 100644 --- a/event/subscription.go +++ b/event/subscription.go @@ -17,11 +17,11 @@ package event import ( + "context" "sync" "time" "github.com/ethereum/go-ethereum/common/mclock" - "golang.org/x/net/context" ) // Subscription represents a stream of events. The carrier of the events is typically a diff --git a/event/subscription_test.go b/event/subscription_test.go index a4fe30298c..aa6d98984d 100644 --- a/event/subscription_test.go +++ b/event/subscription_test.go @@ -17,11 +17,10 @@ package event import ( + "context" "errors" "testing" "time" - - "golang.org/x/net/context" ) var errInts = errors.New("error in subscribeInts") diff --git a/interfaces.go b/interfaces.go index f7e71a3173..744f07b95a 100644 --- a/interfaces.go +++ b/interfaces.go @@ -18,12 +18,12 @@ package ethereum import ( + "context" "errors" "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" - "golang.org/x/net/context" ) // NotFound is returned by API methods if the requested item does not exist. diff --git a/internal/build/util.go b/internal/build/util.go index 1523a067bc..4df7b91381 100644 --- a/internal/build/util.go +++ b/internal/build/util.go @@ -52,19 +52,10 @@ func MustRunCommand(cmd string, args ...string) { // GOPATH returns the value that the GOPATH environment // variable should be set to. func GOPATH() string { - path := filepath.SplitList(os.Getenv("GOPATH")) - if len(path) == 0 { + if os.Getenv("GOPATH") == "" { log.Fatal("GOPATH is not set") } - // Ensure that our internal vendor folder is on GOPATH - vendor, _ := filepath.Abs(filepath.Join("build", "_vendor")) - for _, dir := range path { - if dir == vendor { - return strings.Join(path, string(filepath.ListSeparator)) - } - } - newpath := append(path[:1], append([]string{vendor}, path[1:]...)...) - return strings.Join(newpath, string(filepath.ListSeparator)) + return os.Getenv("GOPATH") } // VERSION returns the content of the VERSION file. diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go index 0928c973f4..ccb7ec80b1 100644 --- a/internal/ethapi/api.go +++ b/internal/ethapi/api.go @@ -18,6 +18,7 @@ package ethapi import ( "bytes" + "context" "encoding/hex" "errors" "fmt" @@ -43,7 +44,6 @@ import ( "github.com/ethereum/go-ethereum/rpc" "github.com/syndtr/goleveldb/leveldb" "github.com/syndtr/goleveldb/leveldb/util" - "golang.org/x/net/context" ) const ( diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go index e10fb14ffe..50cd3801b5 100644 --- a/internal/ethapi/backend.go +++ b/internal/ethapi/backend.go @@ -18,6 +18,7 @@ package ethapi import ( + "context" "math/big" "github.com/ethereum/go-ethereum/accounts" @@ -30,7 +31,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // Backend interface provides the common API services (that are provided by diff --git a/les/api_backend.go b/les/api_backend.go index 006240369c..df2782f780 100644 --- a/les/api_backend.go +++ b/les/api_backend.go @@ -17,6 +17,7 @@ package les import ( + "context" "math/big" "github.com/ethereum/go-ethereum/accounts" @@ -33,7 +34,6 @@ import ( "github.com/ethereum/go-ethereum/light" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) type LesApiBackend struct { diff --git a/les/odr.go b/les/odr.go index 06b44d3186..684f36c761 100644 --- a/les/odr.go +++ b/les/odr.go @@ -17,6 +17,7 @@ package les import ( + "context" "crypto/rand" "encoding/binary" "sync" @@ -26,7 +27,6 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/light" "github.com/ethereum/go-ethereum/log" - "golang.org/x/net/context" ) var ( diff --git a/les/odr_test.go b/les/odr_test.go index 1b436b8e6e..6b074f1a22 100644 --- a/les/odr_test.go +++ b/les/odr_test.go @@ -18,6 +18,7 @@ package les import ( "bytes" + "context" "math/big" "testing" "time" @@ -32,7 +33,6 @@ import ( "github.com/ethereum/go-ethereum/light" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" - "golang.org/x/net/context" ) type odrTestFn func(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte @@ -181,8 +181,11 @@ func testOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { for i := uint64(0); i <= pm.blockchain.CurrentHeader().Number.Uint64(); i++ { bhash := core.GetCanonicalHash(db, i) b1 := fn(light.NoOdr, db, pm.chainConfig, pm.blockchain.(*core.BlockChain), nil, bhash) - ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond) + + ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond) + defer cancel() b2 := fn(ctx, ldb, lpm.chainConfig, nil, lpm.blockchain.(*light.LightChain), bhash) + eq := bytes.Equal(b1, b2) exp := i < expFail if exp && !eq { diff --git a/les/request_test.go b/les/request_test.go index bec6bf1bc1..ba1fc15bd7 100644 --- a/les/request_test.go +++ b/les/request_test.go @@ -17,6 +17,7 @@ package les import ( + "context" "testing" "time" @@ -25,7 +26,6 @@ import ( "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/light" - "golang.org/x/net/context" ) var testBankSecureTrieKey = secAddr(testBankAddress) @@ -91,7 +91,9 @@ func testAccess(t *testing.T, protocol int, fn accessTestFn) { for i := uint64(0); i <= pm.blockchain.CurrentHeader().Number.Uint64(); i++ { bhash := core.GetCanonicalHash(db, i) if req := fn(ldb, bhash, i); req != nil { - ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond) + ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond) + defer cancel() + err := odr.Retrieve(ctx, req) got := err == nil exp := i < expFail diff --git a/les/sync.go b/les/sync.go index c143cb1453..c0e17f97d9 100644 --- a/les/sync.go +++ b/les/sync.go @@ -17,12 +17,12 @@ package les import ( + "context" "time" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/eth/downloader" "github.com/ethereum/go-ethereum/light" - "golang.org/x/net/context" ) const ( @@ -77,8 +77,8 @@ func (pm *ProtocolManager) synchronise(peer *peer) { return } - ctx, _ := context.WithTimeout(context.Background(), time.Second*5) + ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) + defer cancel() pm.blockchain.(*light.LightChain).SyncCht(ctx) - pm.downloader.Synchronise(peer.id, peer.Head(), peer.Td(), downloader.LightSync) } diff --git a/light/lightchain.go b/light/lightchain.go index 4715d47ab8..82b7a5866b 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -17,6 +17,7 @@ package light import ( + "context" "math/big" "sync" "sync/atomic" @@ -32,7 +33,6 @@ import ( "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/hashicorp/golang-lru" - "golang.org/x/net/context" ) var ( diff --git a/light/lightchain_test.go b/light/lightchain_test.go index 8a99c69f13..7460fd1a31 100644 --- a/light/lightchain_test.go +++ b/light/lightchain_test.go @@ -17,6 +17,7 @@ package light import ( + "context" "fmt" "math/big" "runtime" @@ -30,7 +31,6 @@ import ( "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" "github.com/hashicorp/golang-lru" - "golang.org/x/net/context" ) // So we can deterministically seed different blockchains diff --git a/light/odr.go b/light/odr.go index 4f6ef6b9ed..ca6364f287 100644 --- a/light/odr.go +++ b/light/odr.go @@ -19,6 +19,7 @@ package light import ( + "context" "math/big" "github.com/ethereum/go-ethereum/common" @@ -27,7 +28,6 @@ import ( "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/rlp" - "golang.org/x/net/context" ) // NoOdr is the default context passed to an ODR capable function when the ODR diff --git a/light/odr_test.go b/light/odr_test.go index e2eced3469..ba82ec04ff 100644 --- a/light/odr_test.go +++ b/light/odr_test.go @@ -18,6 +18,7 @@ package light import ( "bytes" + "context" "errors" "math/big" "testing" @@ -36,7 +37,6 @@ import ( "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" - "golang.org/x/net/context" ) var ( @@ -277,8 +277,11 @@ func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { for i := uint64(0); i <= blockchain.CurrentHeader().Number.Uint64(); i++ { bhash := core.GetCanonicalHash(sdb, i) b1 := fn(NoOdr, sdb, blockchain, nil, bhash) - ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond) + + ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond) + defer cancel() b2 := fn(ctx, ldb, nil, lightchain, bhash) + eq := bytes.Equal(b1, b2) exp := i < expFail if exp && !eq { diff --git a/light/odr_util.go b/light/odr_util.go index 17e9aadcb2..d7f8458f12 100644 --- a/light/odr_util.go +++ b/light/odr_util.go @@ -18,6 +18,7 @@ package light import ( "bytes" + "context" "errors" "math/big" @@ -27,7 +28,6 @@ import ( "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/rlp" - "golang.org/x/net/context" ) var sha3_nil = crypto.Keccak256Hash(nil) diff --git a/light/state.go b/light/state.go index d3e047ef47..b184dc3a5c 100644 --- a/light/state.go +++ b/light/state.go @@ -17,11 +17,11 @@ package light import ( + "context" "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/crypto" - "golang.org/x/net/context" ) // LightState is a memory representation of a state. diff --git a/light/state_object.go b/light/state_object.go index f33ba217e9..a54ea1d9ff 100644 --- a/light/state_object.go +++ b/light/state_object.go @@ -18,13 +18,13 @@ package light import ( "bytes" + "context" "fmt" "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/rlp" - "golang.org/x/net/context" ) var emptyCodeHash = crypto.Keccak256(nil) diff --git a/light/state_test.go b/light/state_test.go index d594ab9ff0..e776efec8e 100644 --- a/light/state_test.go +++ b/light/state_test.go @@ -18,6 +18,7 @@ package light import ( "bytes" + "context" "math/big" "testing" @@ -26,7 +27,6 @@ import ( "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/ethdb" - "golang.org/x/net/context" ) func makeTestState() (common.Hash, ethdb.Database) { diff --git a/light/trie.go b/light/trie.go index c5525358a4..1440f2fbfd 100644 --- a/light/trie.go +++ b/light/trie.go @@ -17,9 +17,10 @@ package light import ( + "context" + "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/trie" - "golang.org/x/net/context" ) // LightTrie is an ODR-capable wrapper around trie.SecureTrie diff --git a/light/txpool.go b/light/txpool.go index 5eb1ba8015..4461958065 100644 --- a/light/txpool.go +++ b/light/txpool.go @@ -17,6 +17,7 @@ package light import ( + "context" "fmt" "sync" "time" @@ -29,7 +30,6 @@ import ( "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" - "golang.org/x/net/context" ) // txPermanent is the number of mined blocks after a mined transaction is @@ -230,13 +230,13 @@ func (pool *TxPool) rollbackTxs(hash common.Hash, txc txStateChanges) { } } -// setNewHead sets a new head header, processing (and rolling back if necessary) +// reorgOnNewHead sets a new head header, processing (and rolling back if necessary) // the blocks since the last known head and returns a txStateChanges map containing // the recently mined and rolled back transaction hashes. If an error (context // timeout) occurs during checking new blocks, it leaves the locally known head // at the latest checked block and still returns a valid txStateChanges, making it // possible to continue checking the missing blocks at the next chain head event -func (pool *TxPool) setNewHead(ctx context.Context, newHeader *types.Header) (txStateChanges, error) { +func (pool *TxPool) reorgOnNewHead(ctx context.Context, newHeader *types.Header) (txStateChanges, error) { txc := make(txStateChanges) oldh := pool.chain.GetHeaderByHash(pool.head) newh := newHeader @@ -305,20 +305,28 @@ func (pool *TxPool) eventLoop() { for ev := range pool.events.Chan() { switch ev.Data.(type) { case core.ChainHeadEvent: - head := pool.chain.CurrentHeader() - pool.mu.Lock() - ctx, _ := context.WithTimeout(context.Background(), blockCheckTimeout) - txc, _ := pool.setNewHead(ctx, head) - m, r := txc.getLists() - pool.relay.NewHead(pool.head, m, r) - pool.homestead = pool.config.IsHomestead(head.Number) - pool.signer = types.MakeSigner(pool.config, head.Number) - pool.mu.Unlock() - time.Sleep(time.Millisecond) // hack in order to avoid hogging the lock; this part will be replaced by a subsequent PR + pool.setNewHead(ev.Data.(core.ChainHeadEvent).Block.Header()) + // hack in order to avoid hogging the lock; this part will + // be replaced by a subsequent PR. + time.Sleep(time.Millisecond) } } } +func (pool *TxPool) setNewHead(head *types.Header) { + pool.mu.Lock() + defer pool.mu.Unlock() + + ctx, cancel := context.WithTimeout(context.Background(), blockCheckTimeout) + defer cancel() + + txc, _ := pool.reorgOnNewHead(ctx, head) + m, r := txc.getLists() + pool.relay.NewHead(pool.head, m, r) + pool.homestead = pool.config.IsHomestead(head.Number) + pool.signer = types.MakeSigner(pool.config, head.Number) +} + // Stop stops the light transaction pool func (pool *TxPool) Stop() { close(pool.quit) diff --git a/light/txpool_test.go b/light/txpool_test.go index 980c7c8987..e93955511b 100644 --- a/light/txpool_test.go +++ b/light/txpool_test.go @@ -17,6 +17,7 @@ package light import ( + "context" "math" "math/big" "testing" @@ -30,7 +31,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" - "golang.org/x/net/context" ) type testTxRelay struct { @@ -107,10 +107,11 @@ func TestTxPool(t *testing.T) { lightchain.SetValidator(bproc{}) txPermanent = 50 pool := NewTxPool(testChainConfig(), evmux, lightchain, relay) + ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second) + defer cancel() for ii, block := range gchain { i := ii + 1 - ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond) s := sentTx(i - 1) e := sentTx(i) for i := s; i < e; i++ { diff --git a/light/vm_env.go b/light/vm_env.go index ebd229de86..54aa12875b 100644 --- a/light/vm_env.go +++ b/light/vm_env.go @@ -17,12 +17,12 @@ package light import ( + "context" "math/big" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/crypto" - "golang.org/x/net/context" ) // VMState is a wrapper for the light state that holds the actual context and diff --git a/mobile/context.go b/mobile/context.go index 9df94b6896..f1fff90114 100644 --- a/mobile/context.go +++ b/mobile/context.go @@ -20,9 +20,8 @@ package geth import ( + "context" "time" - - "golang.org/x/net/context" ) // Context carries a deadline, a cancelation signal, and other values across API diff --git a/rpc/client.go b/rpc/client.go index 78a6fe7899..2c35ba54a5 100644 --- a/rpc/client.go +++ b/rpc/client.go @@ -19,6 +19,7 @@ package rpc import ( "bytes" "container/list" + "context" "encoding/json" "errors" "fmt" @@ -31,7 +32,6 @@ import ( "time" "github.com/ethereum/go-ethereum/log" - "golang.org/x/net/context" ) var ( diff --git a/rpc/client_context_go1.4.go b/rpc/client_context_go1.4.go deleted file mode 100644 index ac956a17dd..0000000000 --- a/rpc/client_context_go1.4.go +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// +build !go1.5 - -package rpc - -import ( - "net" - "net/http" - "time" - - "golang.org/x/net/context" -) - -// In older versions of Go (below 1.5), dials cannot be canceled -// via a channel or context. The context deadline can still applied. - -// contextDialer returns a dialer that applies the deadline value from the given context. -func contextDialer(ctx context.Context) *net.Dialer { - dialer := &net.Dialer{KeepAlive: tcpKeepAliveInterval} - if deadline, ok := ctx.Deadline(); ok { - dialer.Deadline = deadline - } else { - dialer.Deadline = time.Now().Add(defaultDialTimeout) - } - return dialer -} - -// dialContext connects to the given address, aborting the dial if ctx is canceled. -func dialContext(ctx context.Context, network, addr string) (net.Conn, error) { - return contextDialer(ctx).Dial(network, addr) -} - -// requestWithContext copies req, adding the cancelation channel and deadline from ctx. -func requestWithContext(c *http.Client, req *http.Request, ctx context.Context) (*http.Client, *http.Request) { - // Set Timeout on the client if the context has a deadline. - // Note that there is no default timeout (unlike in contextDialer) because - // the timeout applies to the entire request, including reads from body. - if deadline, ok := ctx.Deadline(); ok { - c2 := *c - c2.Timeout = deadline.Sub(time.Now()) - c = &c2 - } - req2 := *req - return c, &req2 -} diff --git a/rpc/client_context_go1.5.go b/rpc/client_context_go1.5.go deleted file mode 100644 index 4a007d9f8a..0000000000 --- a/rpc/client_context_go1.5.go +++ /dev/null @@ -1,61 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// +build go1.5,!go1.6 - -package rpc - -import ( - "net" - "net/http" - "time" - - "golang.org/x/net/context" -) - -// In Go 1.5, dials cannot be canceled via a channel or context. The context deadline can -// still be applied. Go 1.5 adds the ability to cancel HTTP requests via a channel. - -// contextDialer returns a dialer that applies the deadline value from the given context. -func contextDialer(ctx context.Context) *net.Dialer { - dialer := &net.Dialer{KeepAlive: tcpKeepAliveInterval} - if deadline, ok := ctx.Deadline(); ok { - dialer.Deadline = deadline - } else { - dialer.Deadline = time.Now().Add(defaultDialTimeout) - } - return dialer -} - -// dialContext connects to the given address, aborting the dial if ctx is canceled. -func dialContext(ctx context.Context, network, addr string) (net.Conn, error) { - return contextDialer(ctx).Dial(network, addr) -} - -// requestWithContext copies req, adding the cancelation channel and deadline from ctx. -func requestWithContext(c *http.Client, req *http.Request, ctx context.Context) (*http.Client, *http.Request) { - // Set Timeout on the client if the context has a deadline. - // Note that there is no default timeout (unlike in contextDialer) because - // the timeout applies to the entire request, including reads from body. - if deadline, ok := ctx.Deadline(); ok { - c2 := *c - c2.Timeout = deadline.Sub(time.Now()) - c = &c2 - } - req2 := *req - req2.Cancel = ctx.Done() - return c, &req2 -} diff --git a/rpc/client_context_go1.6.go b/rpc/client_context_go1.6.go deleted file mode 100644 index 67777ddc6a..0000000000 --- a/rpc/client_context_go1.6.go +++ /dev/null @@ -1,55 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// +build go1.6,!go1.7 - -package rpc - -import ( - "net" - "net/http" - "time" - - "golang.org/x/net/context" -) - -// In Go 1.6, net.Dialer gained the ability to cancel via a channel. - -// contextDialer returns a dialer that applies the deadline value from the given context. -func contextDialer(ctx context.Context) *net.Dialer { - dialer := &net.Dialer{Cancel: ctx.Done(), KeepAlive: tcpKeepAliveInterval} - if deadline, ok := ctx.Deadline(); ok { - dialer.Deadline = deadline - } else { - dialer.Deadline = time.Now().Add(defaultDialTimeout) - } - return dialer -} - -// dialContext connects to the given address, aborting the dial if ctx is canceled. -func dialContext(ctx context.Context, network, addr string) (net.Conn, error) { - return contextDialer(ctx).Dial(network, addr) -} - -// requestWithContext copies req, adding the cancelation channel and deadline from ctx. -func requestWithContext(c *http.Client, req *http.Request, ctx context.Context) (*http.Client, *http.Request) { - // We set Timeout on the client for Go <= 1.5. There - // is no need to do that here because the dial will be canceled - // by package http. - req2 := *req - req2.Cancel = ctx.Done() - return c, &req2 -} diff --git a/rpc/client_context_go1.7.go b/rpc/client_context_go1.7.go deleted file mode 100644 index 56ce12ab8e..0000000000 --- a/rpc/client_context_go1.7.go +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// +build go1.7 - -package rpc - -import ( - "context" - "net" - "net/http" - "time" -) - -// In Go 1.7, context moved into the standard library and support -// for cancelation via context was added to net.Dialer and http.Request. - -// contextDialer returns a dialer that applies the deadline value from the given context. -func contextDialer(ctx context.Context) *net.Dialer { - dialer := &net.Dialer{Cancel: ctx.Done(), KeepAlive: tcpKeepAliveInterval} - if deadline, ok := ctx.Deadline(); ok { - dialer.Deadline = deadline - } else { - dialer.Deadline = time.Now().Add(defaultDialTimeout) - } - return dialer -} - -// dialContext connects to the given address, aborting the dial if ctx is canceled. -func dialContext(ctx context.Context, network, addr string) (net.Conn, error) { - d := &net.Dialer{KeepAlive: tcpKeepAliveInterval} - return d.DialContext(ctx, network, addr) -} - -// requestWithContext copies req, adding the cancelation channel and deadline from ctx. -func requestWithContext(c *http.Client, req *http.Request, ctx context.Context) (*http.Client, *http.Request) { - return c, req.WithContext(ctx) -} diff --git a/rpc/client_example_test.go b/rpc/client_example_test.go index 3462b3685b..8276a9eadd 100644 --- a/rpc/client_example_test.go +++ b/rpc/client_example_test.go @@ -17,12 +17,12 @@ package rpc_test import ( + "context" "fmt" "math/big" "time" "github.com/ethereum/go-ethereum/rpc" - "golang.org/x/net/context" ) // In this example, our client whishes to track the latest 'block number' diff --git a/rpc/client_test.go b/rpc/client_test.go index 407ed9c065..41471dceaf 100644 --- a/rpc/client_test.go +++ b/rpc/client_test.go @@ -17,6 +17,7 @@ package rpc import ( + "context" "fmt" "math/rand" "net" @@ -31,7 +32,6 @@ import ( "github.com/davecgh/go-spew/spew" "github.com/ethereum/go-ethereum/log" - "golang.org/x/net/context" ) func TestClientRequest(t *testing.T) { diff --git a/rpc/http.go b/rpc/http.go index 5a07702316..89175b1496 100644 --- a/rpc/http.go +++ b/rpc/http.go @@ -18,6 +18,7 @@ package rpc import ( "bytes" + "context" "encoding/json" "fmt" "io" @@ -29,7 +30,6 @@ import ( "time" "github.com/rs/cors" - "golang.org/x/net/context" ) const ( @@ -115,11 +115,11 @@ func (hc *httpConn) doRequest(ctx context.Context, msg interface{}) (io.ReadClos if err != nil { return nil, err } - client, req := requestWithContext(hc.client, hc.req, ctx) + req := hc.req.WithContext(ctx) req.Body = ioutil.NopCloser(bytes.NewReader(body)) req.ContentLength = int64(len(body)) - resp, err := client.Do(req) + resp, err := hc.client.Do(req) if err != nil { return nil, err } diff --git a/rpc/inproc.go b/rpc/inproc.go index f72b974977..595a7ca651 100644 --- a/rpc/inproc.go +++ b/rpc/inproc.go @@ -17,9 +17,8 @@ package rpc import ( + "context" "net" - - "golang.org/x/net/context" ) // NewInProcClient attaches an in-process connection to the given RPC server. diff --git a/rpc/ipc.go b/rpc/ipc.go index 3c86d711ce..8de18a56fe 100644 --- a/rpc/ipc.go +++ b/rpc/ipc.go @@ -17,12 +17,11 @@ package rpc import ( + "context" "fmt" "net" "github.com/ethereum/go-ethereum/log" - - "golang.org/x/net/context" ) // CreateIPCListener creates an listener, on Unix platforms this is a unix socket, on diff --git a/rpc/ipc_unix.go b/rpc/ipc_unix.go index a25b216277..0851ea61e1 100644 --- a/rpc/ipc_unix.go +++ b/rpc/ipc_unix.go @@ -19,11 +19,10 @@ package rpc import ( + "context" "net" "os" "path/filepath" - - "golang.org/x/net/context" ) // ipcListen will create a Unix socket on the given endpoint. diff --git a/rpc/ipc_windows.go b/rpc/ipc_windows.go index 68234d2151..ca56a3ce43 100644 --- a/rpc/ipc_windows.go +++ b/rpc/ipc_windows.go @@ -19,10 +19,10 @@ package rpc import ( + "context" "net" "time" - "golang.org/x/net/context" "gopkg.in/natefinch/npipe.v2" ) diff --git a/rpc/server.go b/rpc/server.go index 4f9ce541e5..ca7e3c01a0 100644 --- a/rpc/server.go +++ b/rpc/server.go @@ -17,14 +17,13 @@ package rpc import ( + "context" "fmt" "reflect" "runtime" "sync/atomic" "github.com/ethereum/go-ethereum/log" - - "golang.org/x/net/context" "gopkg.in/fatih/set.v0" ) diff --git a/rpc/server_test.go b/rpc/server_test.go index c3c88fab75..90d62f26d8 100644 --- a/rpc/server_test.go +++ b/rpc/server_test.go @@ -17,13 +17,12 @@ package rpc import ( + "context" "encoding/json" "net" "reflect" "testing" "time" - - "golang.org/x/net/context" ) type Service struct{} diff --git a/rpc/subscription.go b/rpc/subscription.go index bcdc3cdfca..9ab6af9e14 100644 --- a/rpc/subscription.go +++ b/rpc/subscription.go @@ -17,10 +17,9 @@ package rpc import ( + "context" "errors" "sync" - - "golang.org/x/net/context" ) var ( diff --git a/rpc/subscription_test.go b/rpc/subscription_test.go index 00c4e0e354..345b4e5f29 100644 --- a/rpc/subscription_test.go +++ b/rpc/subscription_test.go @@ -17,13 +17,12 @@ package rpc import ( + "context" "encoding/json" "net" "sync" "testing" "time" - - "golang.org/x/net/context" ) type NotificationTestService struct { diff --git a/rpc/utils.go b/rpc/utils.go index c249e9b4a8..2506c48331 100644 --- a/rpc/utils.go +++ b/rpc/utils.go @@ -18,6 +18,7 @@ package rpc import ( "bufio" + "context" crand "crypto/rand" "encoding/binary" "encoding/hex" @@ -29,8 +30,6 @@ import ( "time" "unicode" "unicode/utf8" - - "golang.org/x/net/context" ) var ( diff --git a/rpc/websocket.go b/rpc/websocket.go index f4271fda87..5870108206 100644 --- a/rpc/websocket.go +++ b/rpc/websocket.go @@ -17,6 +17,7 @@ package rpc import ( + "context" "crypto/tls" "fmt" "net" @@ -24,10 +25,9 @@ import ( "net/url" "os" "strings" + "time" "github.com/ethereum/go-ethereum/log" - - "golang.org/x/net/context" "golang.org/x/net/websocket" "gopkg.in/fatih/set.v0" ) @@ -150,3 +150,18 @@ func wsDialAddress(location *url.URL) string { } return location.Host } + +func dialContext(ctx context.Context, network, addr string) (net.Conn, error) { + d := &net.Dialer{KeepAlive: tcpKeepAliveInterval} + return d.DialContext(ctx, network, addr) +} + +func contextDialer(ctx context.Context) *net.Dialer { + dialer := &net.Dialer{Cancel: ctx.Done(), KeepAlive: tcpKeepAliveInterval} + if deadline, ok := ctx.Deadline(); ok { + dialer.Deadline = deadline + } else { + dialer.Deadline = time.Now().Add(defaultDialTimeout) + } + return dialer +} diff --git a/swarm/services/swap/swap.go b/swarm/services/swap/swap.go index eb21a598d0..093892e8d9 100644 --- a/swarm/services/swap/swap.go +++ b/swarm/services/swap/swap.go @@ -17,6 +17,7 @@ package swap import ( + "context" "crypto/ecdsa" "fmt" "math/big" @@ -33,7 +34,6 @@ import ( "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/swarm/services/swap/swap" - "golang.org/x/net/context" ) // SwAP Swarm Accounting Protocol with diff --git a/swarm/swarm.go b/swarm/swarm.go index 44564a71d4..bd256edaa2 100644 --- a/swarm/swarm.go +++ b/swarm/swarm.go @@ -18,6 +18,7 @@ package swarm import ( "bytes" + "context" "crypto/ecdsa" "fmt" @@ -35,7 +36,6 @@ import ( httpapi "github.com/ethereum/go-ethereum/swarm/api/http" "github.com/ethereum/go-ethereum/swarm/network" "github.com/ethereum/go-ethereum/swarm/storage" - "golang.org/x/net/context" ) // the swarm stack diff --git a/build/_vendor/src/golang.org/x/net/context/context.go b/vendor/golang.org/x/net/context/context.go similarity index 82% rename from build/_vendor/src/golang.org/x/net/context/context.go rename to vendor/golang.org/x/net/context/context.go index 134654cf7e..f143ed6a1e 100644 --- a/build/_vendor/src/golang.org/x/net/context/context.go +++ b/vendor/golang.org/x/net/context/context.go @@ -7,7 +7,7 @@ // and between processes. // // Incoming requests to a server should create a Context, and outgoing calls to -// servers should accept a Context. The chain of function calls between must +// servers should accept a Context. The chain of function calls between must // propagate the Context, optionally replacing it with a modified copy created // using WithDeadline, WithTimeout, WithCancel, or WithValue. // @@ -16,14 +16,14 @@ // propagation: // // Do not store Contexts inside a struct type; instead, pass a Context -// explicitly to each function that needs it. The Context should be the first +// explicitly to each function that needs it. The Context should be the first // parameter, typically named ctx: // // func DoSomething(ctx context.Context, arg Arg) error { // // ... use ctx ... // } // -// Do not pass a nil Context, even if a function permits it. Pass context.TODO +// Do not pass a nil Context, even if a function permits it. Pass context.TODO // if you are unsure about which Context to use. // // Use context Values only for request-scoped data that transits processes and @@ -44,13 +44,13 @@ import "time" // Context's methods may be called by multiple goroutines simultaneously. type Context interface { // Deadline returns the time when work done on behalf of this context - // should be canceled. Deadline returns ok==false when no deadline is - // set. Successive calls to Deadline return the same results. + // should be canceled. Deadline returns ok==false when no deadline is + // set. Successive calls to Deadline return the same results. Deadline() (deadline time.Time, ok bool) // Done returns a channel that's closed when work done on behalf of this - // context should be canceled. Done may return nil if this context can - // never be canceled. Successive calls to Done return the same value. + // context should be canceled. Done may return nil if this context can + // never be canceled. Successive calls to Done return the same value. // // WithCancel arranges for Done to be closed when cancel is called; // WithDeadline arranges for Done to be closed when the deadline @@ -79,24 +79,24 @@ type Context interface { // a Done channel for cancelation. Done() <-chan struct{} - // Err returns a non-nil error value after Done is closed. Err returns + // Err returns a non-nil error value after Done is closed. Err returns // Canceled if the context was canceled or DeadlineExceeded if the - // context's deadline passed. No other values for Err are defined. + // context's deadline passed. No other values for Err are defined. // After Done is closed, successive calls to Err return the same value. Err() error // Value returns the value associated with this context for key, or nil - // if no value is associated with key. Successive calls to Value with + // if no value is associated with key. Successive calls to Value with // the same key returns the same result. // // Use context values only for request-scoped data that transits // processes and API boundaries, not for passing optional parameters to // functions. // - // A key identifies a specific value in a Context. Functions that wish + // A key identifies a specific value in a Context. Functions that wish // to store values in Context typically allocate a key in a global // variable then use that key as the argument to context.WithValue and - // Context.Value. A key can be any type that supports equality; + // Context.Value. A key can be any type that supports equality; // packages should define keys as an unexported type to avoid // collisions. // @@ -115,7 +115,7 @@ type Context interface { // // This prevents collisions with keys defined in other packages. // type key int // - // // userKey is the key for user.User values in Contexts. It is + // // userKey is the key for user.User values in Contexts. It is // // unexported; clients use user.NewContext and user.FromContext // // instead of using this key directly. // var userKey key = 0 @@ -134,14 +134,14 @@ type Context interface { } // Background returns a non-nil, empty Context. It is never canceled, has no -// values, and has no deadline. It is typically used by the main function, +// values, and has no deadline. It is typically used by the main function, // initialization, and tests, and as the top-level Context for incoming // requests. func Background() Context { return background } -// TODO returns a non-nil, empty Context. Code should use context.TODO when +// TODO returns a non-nil, empty Context. Code should use context.TODO when // it's unclear which Context to use or it is not yet available (because the // surrounding function has not yet been extended to accept a Context // parameter). TODO is recognized by static analysis tools that determine diff --git a/build/_vendor/src/golang.org/x/net/context/go17.go b/vendor/golang.org/x/net/context/go17.go similarity index 96% rename from build/_vendor/src/golang.org/x/net/context/go17.go rename to vendor/golang.org/x/net/context/go17.go index f8cda19ada..d20f52b7de 100644 --- a/build/_vendor/src/golang.org/x/net/context/go17.go +++ b/vendor/golang.org/x/net/context/go17.go @@ -35,8 +35,8 @@ func WithCancel(parent Context) (ctx Context, cancel CancelFunc) { } // WithDeadline returns a copy of the parent context with the deadline adjusted -// to be no later than d. If the parent's deadline is already earlier than d, -// WithDeadline(parent, d) is semantically equivalent to parent. The returned +// to be no later than d. If the parent's deadline is already earlier than d, +// WithDeadline(parent, d) is semantically equivalent to parent. The returned // context's Done channel is closed when the deadline expires, when the returned // cancel function is called, or when the parent context's Done channel is // closed, whichever happens first. diff --git a/build/_vendor/src/golang.org/x/net/context/pre_go17.go b/vendor/golang.org/x/net/context/pre_go17.go similarity index 93% rename from build/_vendor/src/golang.org/x/net/context/pre_go17.go rename to vendor/golang.org/x/net/context/pre_go17.go index 5a30acabd0..0f35592df5 100644 --- a/build/_vendor/src/golang.org/x/net/context/pre_go17.go +++ b/vendor/golang.org/x/net/context/pre_go17.go @@ -13,7 +13,7 @@ import ( "time" ) -// An emptyCtx is never canceled, has no values, and has no deadline. It is not +// An emptyCtx is never canceled, has no values, and has no deadline. It is not // struct{}, since vars of this type must have distinct addresses. type emptyCtx int @@ -104,7 +104,7 @@ func propagateCancel(parent Context, child canceler) { } // parentCancelCtx follows a chain of parent references until it finds a -// *cancelCtx. This function understands how each of the concrete types in this +// *cancelCtx. This function understands how each of the concrete types in this // package represents its parent. func parentCancelCtx(parent Context) (*cancelCtx, bool) { for { @@ -134,14 +134,14 @@ func removeChild(parent Context, child canceler) { p.mu.Unlock() } -// A canceler is a context type that can be canceled directly. The +// A canceler is a context type that can be canceled directly. The // implementations are *cancelCtx and *timerCtx. type canceler interface { cancel(removeFromParent bool, err error) Done() <-chan struct{} } -// A cancelCtx can be canceled. When canceled, it also cancels any children +// A cancelCtx can be canceled. When canceled, it also cancels any children // that implement canceler. type cancelCtx struct { Context @@ -193,8 +193,8 @@ func (c *cancelCtx) cancel(removeFromParent bool, err error) { } // WithDeadline returns a copy of the parent context with the deadline adjusted -// to be no later than d. If the parent's deadline is already earlier than d, -// WithDeadline(parent, d) is semantically equivalent to parent. The returned +// to be no later than d. If the parent's deadline is already earlier than d, +// WithDeadline(parent, d) is semantically equivalent to parent. The returned // context's Done channel is closed when the deadline expires, when the returned // cancel function is called, or when the parent context's Done channel is // closed, whichever happens first. @@ -226,8 +226,8 @@ func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) { return c, func() { c.cancel(true, Canceled) } } -// A timerCtx carries a timer and a deadline. It embeds a cancelCtx to -// implement Done and Err. It implements cancel by stopping its timer then +// A timerCtx carries a timer and a deadline. It embeds a cancelCtx to +// implement Done and Err. It implements cancel by stopping its timer then // delegating to cancelCtx.cancel. type timerCtx struct { *cancelCtx @@ -281,7 +281,7 @@ func WithValue(parent Context, key interface{}, val interface{}) Context { return &valueCtx{parent, key, val} } -// A valueCtx carries a key-value pair. It implements Value for that key and +// A valueCtx carries a key-value pair. It implements Value for that key and // delegates all other calls to the embedded Context. type valueCtx struct { Context diff --git a/vendor/vendor.json b/vendor/vendor.json index 58bbd82ff8..eaaf0290d1 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -1,6 +1,6 @@ { "comment": "", - "ignore": "test golang.org/x/net/context", + "ignore": "test", "package": [ { "checksumSHA1": "M30X+Wqn7AnUr1numUOkQRI7ET0=", @@ -383,6 +383,12 @@ "revision": "453249f01cfeb54c3d549ddb75ff152ca243f9d8", "revisionTime": "2017-02-08T20:51:15Z" }, + { + "checksumSHA1": "Y+HGqEkYM15ir+J93MEaHdyFy0c=", + "path": "golang.org/x/net/context", + "revision": "a6577fac2d73be281a500b310739095313165611", + "revisionTime": "2017-03-08T20:54:49Z" + }, { "checksumSHA1": "vqc3a+oTUGX8PmD0TS+qQ7gmN8I=", "path": "golang.org/x/net/html", From 9a2720fb35c9802c6dd61f9a49c48620b2ba2ecb Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Wed, 22 Mar 2017 19:48:15 +0100 Subject: [PATCH 30/57] mobile: remove support for Go < 1.7 --- mobile/big.go | 5 +++++ mobile/big_go1.7.go | 26 -------------------------- 2 files changed, 5 insertions(+), 26 deletions(-) delete mode 100644 mobile/big_go1.7.go diff --git a/mobile/big.go b/mobile/big.go index 9a55836c13..525717caa8 100644 --- a/mobile/big.go +++ b/mobile/big.go @@ -93,3 +93,8 @@ func (bi *BigInts) Set(index int, bigint *BigInt) error { bi.bigints[index] = bigint.bigint return nil } + +// GetString returns the value of x as a formatted string in some number base. +func (bi *BigInt) GetString(base int) string { + return bi.bigint.Text(base) +} diff --git a/mobile/big_go1.7.go b/mobile/big_go1.7.go deleted file mode 100644 index 0447e1f66e..0000000000 --- a/mobile/big_go1.7.go +++ /dev/null @@ -1,26 +0,0 @@ -// Copyright 2016 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -// Contains the wrappers from the math/big package that require Go 1.7 and above. - -// +build go1.7 - -package geth - -// GetString returns the value of x as a formatted string in some number base. -func (bi *BigInt) GetString(base int) string { - return bi.bigint.Text(base) -} From f1534f5797664856218c8347366488f37f1e7924 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Wed, 22 Mar 2017 19:48:51 +0100 Subject: [PATCH 31/57] trie, whisper/whisperv5: use math/rand Read function --- trie/trie_test.go | 18 +----------------- whisper/whisperv5/filter_test.go | 20 ++++++++++---------- whisper/whisperv5/message.go | 18 +----------------- whisper/whisperv5/message_test.go | 16 ++++++++-------- whisper/whisperv5/whisper_test.go | 5 +++-- 5 files changed, 23 insertions(+), 54 deletions(-) diff --git a/trie/trie_test.go b/trie/trie_test.go index 60307dba8c..01ae3a4e7b 100644 --- a/trie/trie_test.go +++ b/trie/trie_test.go @@ -377,7 +377,7 @@ func (randTest) Generate(r *rand.Rand, size int) reflect.Value { if len(allKeys) < 2 || r.Intn(100) < 10 { // new key key := make([]byte, r.Intn(50)) - randRead(r, key) + r.Read(key) allKeys = append(allKeys, key) return key } @@ -401,22 +401,6 @@ func (randTest) Generate(r *rand.Rand, size int) reflect.Value { return reflect.ValueOf(steps) } -// rand.Rand provides a Read method in Go 1.7 and later, but -// we can't use it yet. -func randRead(r *rand.Rand, b []byte) { - pos := 0 - val := 0 - for n := 0; n < len(b); n++ { - if pos == 0 { - val = r.Int() - pos = 7 - } - b[n] = byte(val) - val >>= 8 - pos-- - } -} - func runRandTest(rt randTest) bool { db, _ := ethdb.NewMemDatabase() tr, _ := New(common.Hash{}, db) diff --git a/whisper/whisperv5/filter_test.go b/whisper/whisperv5/filter_test.go index d69fb40dbf..1cf85b8d7e 100644 --- a/whisper/whisperv5/filter_test.go +++ b/whisper/whisperv5/filter_test.go @@ -18,7 +18,7 @@ package whisperv5 import ( "math/big" - "math/rand" + mrand "math/rand" "testing" "time" @@ -33,12 +33,12 @@ var seed int64 // reproduciblity independent of their sequence. func InitSingleTest() { seed = time.Now().Unix() - rand.Seed(seed) + mrand.Seed(seed) } func InitDebugTest(i int64) { seed = i - rand.Seed(seed) + mrand.Seed(seed) } type FilterTestCase struct { @@ -55,7 +55,7 @@ func generateFilter(t *testing.T, symmetric bool) (*Filter, error) { const topicNum = 8 f.Topics = make([]TopicType, topicNum) for i := 0; i < topicNum; i++ { - randomize(f.Topics[i][:]) + mrand.Read(f.Topics[i][:]) f.Topics[i][0] = 0x01 } @@ -68,7 +68,7 @@ func generateFilter(t *testing.T, symmetric bool) (*Filter, error) { if symmetric { f.KeySym = make([]byte, 12) - randomize(f.KeySym) + mrand.Read(f.KeySym) f.SymKeyHash = crypto.Keccak256Hash(f.KeySym) } else { f.KeyAsym, err = crypto.GenerateKey() @@ -87,7 +87,7 @@ func generateTestCases(t *testing.T, SizeTestFilters int) []FilterTestCase { for i := 0; i < SizeTestFilters; i++ { f, _ := generateFilter(t, true) cases[i].f = f - cases[i].alive = (rand.Int()&int(1) == 0) + cases[i].alive = (mrand.Int()&int(1) == 0) } return cases } @@ -147,7 +147,7 @@ func TestComparePubKey(t *testing.T) { } // generate key3 == key1 - rand.Seed(seed) + mrand.Seed(seed) key3, err := crypto.GenerateKey() if err != nil { t.Fatalf("failed to generate third key with seed %d: %s.", seed, err) @@ -193,7 +193,7 @@ func TestMatchEnvelope(t *testing.T) { } // encrypt symmetrically - i := rand.Int() % 4 + i := mrand.Int() % 4 fsym.Topics[i] = params.Topic fasym.Topics[i] = params.Topic msg = NewSentMessage(params) @@ -544,7 +544,7 @@ func TestWatchers(t *testing.T) { var envelopes [NumMessages]*Envelope for i = 0; i < NumMessages; i++ { - j = rand.Uint32() % NumFilters + j = mrand.Uint32() % NumFilters e = generateCompatibeEnvelope(t, tst[j].f) envelopes[i] = e tst[j].msgCnt++ @@ -597,7 +597,7 @@ func TestWatchers(t *testing.T) { envelopes[0] = e tst[0].msgCnt++ for i = 1; i < NumMessages; i++ { - j = rand.Uint32() % NumFilters + j = mrand.Uint32() % NumFilters e = generateCompatibeEnvelope(t, tst[j].f) envelopes[i] = e tst[j].msgCnt++ diff --git a/whisper/whisperv5/message.go b/whisper/whisperv5/message.go index 9677f278e5..5f964b072a 100644 --- a/whisper/whisperv5/message.go +++ b/whisper/whisperv5/message.go @@ -128,7 +128,7 @@ func (msg *SentMessage) appendPadding(params *MessageParams) { panic("please fix the padding algorithm before releasing new version") } buf := make([]byte, padSize) - randomize(buf[1:]) + mrand.Read(buf[1:]) buf[0] = byte(padSize) if params.Padding != nil { copy(buf[1:], params.Padding) @@ -365,19 +365,3 @@ func (msg *ReceivedMessage) hash() []byte { } return crypto.Keccak256(msg.Raw) } - -// rand.Rand provides a Read method in Go 1.7 and later, -// but we can't use it yet. -func randomize(b []byte) { - cnt := 0 - val := mrand.Int63() - for n := 0; n < len(b); n++ { - b[n] = byte(val) - val >>= 8 - cnt++ - if cnt >= 7 { - cnt = 0 - val = mrand.Int63() - } - } -} diff --git a/whisper/whisperv5/message_test.go b/whisper/whisperv5/message_test.go index c6f1ca2caf..1ed7250d3a 100644 --- a/whisper/whisperv5/message_test.go +++ b/whisper/whisperv5/message_test.go @@ -18,7 +18,7 @@ package whisperv5 import ( "bytes" - "math/rand" + mrand "math/rand" "testing" "github.com/ethereum/go-ethereum/crypto" @@ -34,13 +34,13 @@ func generateMessageParams() (*MessageParams, error) { // set all the parameters except p.Dst buf := make([]byte, 1024) - randomize(buf) - sz := rand.Intn(400) + mrand.Read(buf) + sz := mrand.Intn(400) var p MessageParams p.PoW = 0.01 p.WorkTime = 1 - p.TTL = uint32(rand.Intn(1024)) + p.TTL = uint32(mrand.Intn(1024)) p.Payload = make([]byte, sz) p.Padding = make([]byte, padSizeLimitUpper) p.KeySym = make([]byte, aesKeyLength) @@ -132,7 +132,7 @@ func TestMessageEncryption(t *testing.T) { func TestMessageWrap(t *testing.T) { seed = int64(1777444222) - rand.Seed(seed) + mrand.Seed(seed) target := 128.0 params, err := generateMessageParams() @@ -168,7 +168,7 @@ func TestMessageWrap(t *testing.T) { func TestMessageSeal(t *testing.T) { // this test depends on deterministic choice of seed (1976726903) seed = int64(1976726903) - rand.Seed(seed) + mrand.Seed(seed) params, err := generateMessageParams() if err != nil { @@ -179,8 +179,8 @@ func TestMessageSeal(t *testing.T) { params.TTL = 1 aesnonce := make([]byte, 12) salt := make([]byte, 12) - randomize(aesnonce) - randomize(salt) + mrand.Read(aesnonce) + mrand.Read(salt) env := NewEnvelope(params.TTL, params.Topic, salt, aesnonce, msg) if err != nil { diff --git a/whisper/whisperv5/whisper_test.go b/whisper/whisperv5/whisper_test.go index 312dacfc4b..8d63d443cf 100644 --- a/whisper/whisperv5/whisper_test.go +++ b/whisper/whisperv5/whisper_test.go @@ -18,6 +18,7 @@ package whisperv5 import ( "bytes" + mrand "math/rand" "testing" "time" @@ -49,7 +50,7 @@ func TestWhisperBasic(t *testing.T) { } peerID := make([]byte, 64) - randomize(peerID) + mrand.Read(peerID) peer, _ := w.getPeer(peerID) if peer != nil { t.Fatal("found peer for random key.") @@ -212,7 +213,7 @@ func TestWhisperSymKeyManagement(t *testing.T) { // add existing id, nothing should change randomKey := make([]byte, 16) - randomize(randomKey) + mrand.Read(randomKey) err = w.AddSymKey(id1, randomKey) if err == nil { t.Fatalf("failed AddSymKey with seed %d.", seed) From 11e7a712f469fb24ddb88ecebcefab6ed8880eb8 Mon Sep 17 00:00:00 2001 From: Zahoor Mohamed Date: Thu, 23 Mar 2017 19:26:06 +0530 Subject: [PATCH 32/57] swarm/api: support mounting manifests via FUSE (#3690) --- .travis.yml | 15 + build/ci.go | 14 + cmd/swarm/main.go | 2 +- internal/web3ext/web3ext.go | 29 + swarm/api/fuse.go | 139 ++ swarm/api/swarmfs.go | 48 + swarm/api/swarmfs_unix.go | 266 ++ swarm/api/swarmfs_unix_test.go | 122 + swarm/api/swarmfs_windows.go | 48 + swarm/swarm.go | 15 +- vendor/bazil.org/fuse/LICENSE | 93 + vendor/bazil.org/fuse/README.md | 23 + vendor/bazil.org/fuse/buffer.go | 35 + vendor/bazil.org/fuse/debug.go | 21 + vendor/bazil.org/fuse/error_darwin.go | 17 + vendor/bazil.org/fuse/error_freebsd.go | 15 + vendor/bazil.org/fuse/error_linux.go | 17 + vendor/bazil.org/fuse/error_std.go | 31 + vendor/bazil.org/fuse/fs/serve.go | 1568 ++++++++++++ vendor/bazil.org/fuse/fs/tree.go | 99 + vendor/bazil.org/fuse/fuse.go | 2303 ++++++++++++++++++ vendor/bazil.org/fuse/fuse.iml | 9 + vendor/bazil.org/fuse/fuse_darwin.go | 9 + vendor/bazil.org/fuse/fuse_freebsd.go | 6 + vendor/bazil.org/fuse/fuse_kernel.go | 774 ++++++ vendor/bazil.org/fuse/fuse_kernel_darwin.go | 88 + vendor/bazil.org/fuse/fuse_kernel_freebsd.go | 62 + vendor/bazil.org/fuse/fuse_kernel_linux.go | 70 + vendor/bazil.org/fuse/fuse_kernel_std.go | 1 + vendor/bazil.org/fuse/fuse_linux.go | 7 + vendor/bazil.org/fuse/fuseutil/fuseutil.go | 20 + vendor/bazil.org/fuse/mount.go | 38 + vendor/bazil.org/fuse/mount_darwin.go | 208 ++ vendor/bazil.org/fuse/mount_freebsd.go | 111 + vendor/bazil.org/fuse/mount_linux.go | 150 ++ vendor/bazil.org/fuse/options.go | 310 +++ vendor/bazil.org/fuse/options_darwin.go | 35 + vendor/bazil.org/fuse/options_freebsd.go | 28 + vendor/bazil.org/fuse/options_linux.go | 25 + vendor/bazil.org/fuse/protocol.go | 75 + vendor/bazil.org/fuse/unmount.go | 6 + vendor/bazil.org/fuse/unmount_linux.go | 21 + vendor/bazil.org/fuse/unmount_std.go | 17 + vendor/vendor.json | 18 + 44 files changed, 7005 insertions(+), 3 deletions(-) create mode 100644 swarm/api/fuse.go create mode 100644 swarm/api/swarmfs.go create mode 100644 swarm/api/swarmfs_unix.go create mode 100644 swarm/api/swarmfs_unix_test.go create mode 100644 swarm/api/swarmfs_windows.go create mode 100644 vendor/bazil.org/fuse/LICENSE create mode 100644 vendor/bazil.org/fuse/README.md create mode 100644 vendor/bazil.org/fuse/buffer.go create mode 100644 vendor/bazil.org/fuse/debug.go create mode 100644 vendor/bazil.org/fuse/error_darwin.go create mode 100644 vendor/bazil.org/fuse/error_freebsd.go create mode 100644 vendor/bazil.org/fuse/error_linux.go create mode 100644 vendor/bazil.org/fuse/error_std.go create mode 100644 vendor/bazil.org/fuse/fs/serve.go create mode 100644 vendor/bazil.org/fuse/fs/tree.go create mode 100644 vendor/bazil.org/fuse/fuse.go create mode 100644 vendor/bazil.org/fuse/fuse.iml create mode 100644 vendor/bazil.org/fuse/fuse_darwin.go create mode 100644 vendor/bazil.org/fuse/fuse_freebsd.go create mode 100644 vendor/bazil.org/fuse/fuse_kernel.go create mode 100644 vendor/bazil.org/fuse/fuse_kernel_darwin.go create mode 100644 vendor/bazil.org/fuse/fuse_kernel_freebsd.go create mode 100644 vendor/bazil.org/fuse/fuse_kernel_linux.go create mode 100644 vendor/bazil.org/fuse/fuse_kernel_std.go create mode 100644 vendor/bazil.org/fuse/fuse_linux.go create mode 100644 vendor/bazil.org/fuse/fuseutil/fuseutil.go create mode 100644 vendor/bazil.org/fuse/mount.go create mode 100644 vendor/bazil.org/fuse/mount_darwin.go create mode 100644 vendor/bazil.org/fuse/mount_freebsd.go create mode 100644 vendor/bazil.org/fuse/mount_linux.go create mode 100644 vendor/bazil.org/fuse/options.go create mode 100644 vendor/bazil.org/fuse/options_darwin.go create mode 100644 vendor/bazil.org/fuse/options_freebsd.go create mode 100644 vendor/bazil.org/fuse/options_linux.go create mode 100644 vendor/bazil.org/fuse/protocol.go create mode 100644 vendor/bazil.org/fuse/unmount.go create mode 100644 vendor/bazil.org/fuse/unmount_linux.go create mode 100644 vendor/bazil.org/fuse/unmount_std.go diff --git a/.travis.yml b/.travis.yml index 5f3ff9d16a..4bef48a0db 100644 --- a/.travis.yml +++ b/.travis.yml @@ -5,19 +5,34 @@ matrix: include: - os: linux dist: trusty + sudo: required go: 1.7.5 + script: + - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install fuse + - sudo modprobe fuse + - sudo chmod 666 /dev/fuse + - sudo chown root:$USER /etc/fuse.conf # These are the latest Go versions, only run go vet and misspell on these - os: linux dist: trusty + sudo: required go: 1.8 script: + - sudo -E apt-get -yq --no-install-suggests --no-install-recommends --force-yes install fuse + - sudo modprobe fuse + - sudo chmod 666 /dev/fuse + - sudo chown root:$USER /etc/fuse.conf - go run build/ci.go install - go run build/ci.go test -coverage -vet -misspell - os: osx go: 1.8 + sudo: required script: + - brew update + - brew install caskroom/cask/brew-cask + - brew cask install osxfuse - go run build/ci.go install - go run build/ci.go test -coverage -vet -misspell diff --git a/build/ci.go b/build/ci.go index cb9c7a335b..27589fc7f5 100644 --- a/build/ci.go +++ b/build/ci.go @@ -173,6 +173,20 @@ func doInstall(cmdline []string) { if flag.NArg() > 0 { packages = flag.Args() } + + // Resolve ./... manually and remove vendor/bazil/fuse (fuse is not in windows) + out, err := goTool("list", "./...").CombinedOutput() + if err != nil { + log.Fatalf("package listing failed: %v\n%s", err, string(out)) + } + packages = []string{} + for _, line := range strings.Split(string(out), "\n") { + if !strings.Contains(line, "vendor") { + packages = append(packages, strings.TrimSpace(line)) + } + } + + if *arch == "" || *arch == runtime.GOARCH { goinstall := goTool("install", buildFlags(env)...) goinstall.Args = append(goinstall.Args, "-v") diff --git a/cmd/swarm/main.go b/cmd/swarm/main.go index 1716771464..3c82497e5d 100644 --- a/cmd/swarm/main.go +++ b/cmd/swarm/main.go @@ -122,7 +122,7 @@ func init() { // Override flag defaults so bzzd can run alongside geth. utils.ListenPortFlag.Value = 30399 utils.IPCPathFlag.Value = utils.DirectoryString{Value: "bzzd.ipc"} - utils.IPCApiFlag.Value = "admin, bzz, chequebook, debug, rpc, web3" + utils.IPCApiFlag.Value = "admin, bzz, chequebook, debug, rpc, swarmfs, web3" // Set up the cli app. app.Action = bzzd diff --git a/internal/web3ext/web3ext.go b/internal/web3ext/web3ext.go index 23112c1f19..79f7817810 100644 --- a/internal/web3ext/web3ext.go +++ b/internal/web3ext/web3ext.go @@ -27,9 +27,12 @@ var Modules = map[string]string{ "personal": Personal_JS, "rpc": RPC_JS, "shh": Shh_JS, + "swarmfs": SWARMFS_JS, "txpool": TxPool_JS, + } + const Chequebook_JS = ` web3._extend({ property: 'chequebook', @@ -486,6 +489,32 @@ web3._extend({ ] }); ` +const SWARMFS_JS = ` +web3._extend({ + property: 'swarmfs', + methods: + [ + new web3._extend.Method({ + name: 'mount', + call: 'swarmfs_mount', + params: 2, + inputFormatter: [null,null] + }), + new web3._extend.Method({ + name: 'unmount', + call: 'swarmfs_unmount', + params: 1, + inputFormatter: [null] + }), + new web3._extend.Method({ + name: 'listmounts', + call: 'swarmfs_listmounts', + params: 0, + inputFormatter: [] + }) + ] +}); +` const TxPool_JS = ` web3._extend({ diff --git a/swarm/api/fuse.go b/swarm/api/fuse.go new file mode 100644 index 0000000000..4b1f817f8c --- /dev/null +++ b/swarm/api/fuse.go @@ -0,0 +1,139 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build !windows + +package api + +import ( + "io" + "os" + + "bazil.org/fuse" + "bazil.org/fuse/fs" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/swarm/storage" + "golang.org/x/net/context" +) + + + + +// Data structures used for Fuse filesystem, serving directories and serving files to Fuse driver +type FS struct { + root *Dir +} + +type Dir struct { + inode uint64 + name string + path string + directories []*Dir + files []*File +} + +type File struct { + inode uint64 + name string + path string + key storage.Key + swarmApi *Api + fileSize uint64 + reader storage.LazySectionReader +} + + +// Functions which satisfy the Fuse File System requests +func (filesystem *FS) Root() (fs.Node, error) { + return filesystem.root, nil +} + +func (directory *Dir) Attr(ctx context.Context, a *fuse.Attr) error { + a.Inode = directory.inode + //TODO: need to get permission as argument + a.Mode = os.ModeDir | 0500 + a.Uid = uint32(os.Getuid()) + a.Gid = uint32(os.Getegid()) + return nil +} + +func (directory *Dir) Lookup(ctx context.Context, name string) (fs.Node, error) { + if directory.files != nil { + for _, n := range directory.files { + if n.name == name { + return n, nil + } + } + } + if directory.directories != nil { + for _, n := range directory.directories { + if n.name == name { + return n, nil + } + } + } + return nil, fuse.ENOENT +} + +func (d *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) { + var children []fuse.Dirent + if d.files != nil { + for _, file := range d.files { + children = append(children, fuse.Dirent{Inode: file.inode, Type: fuse.DT_File, Name: file.name}) + } + } + if d.directories != nil { + for _, dir := range d.directories { + children = append(children, fuse.Dirent{Inode: dir.inode, Type: fuse.DT_Dir, Name: dir.name}) + } + } + return children, nil +} + +func (file *File) Attr(ctx context.Context, a *fuse.Attr) error { + + a.Inode = file.inode + //TODO: need to get permission as argument + a.Mode = 0500 + a.Uid = uint32(os.Getuid()) + a.Gid = uint32(os.Getegid()) + + + reader := file.swarmApi.Retrieve(file.key) + quitC := make(chan bool) + size, err := reader.Size(quitC) + if err != nil { + log.Warn("Couldnt file size of file %s : %v", file.path, err) + a.Size = uint64(0) + } + a.Size = uint64(size) + file.fileSize = a.Size + return nil +} + +var _ = fs.HandleReader(&File{}) + +func (file *File) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error { + buf := make([]byte, req.Size) + reader := file.swarmApi.Retrieve(file.key) + n, err := reader.ReadAt(buf, req.Offset) + if err == io.ErrUnexpectedEOF || err == io.EOF { + err = nil + } + resp.Data = buf[:n] + return err + +} diff --git a/swarm/api/swarmfs.go b/swarm/api/swarmfs.go new file mode 100644 index 0000000000..8427d3c5b1 --- /dev/null +++ b/swarm/api/swarmfs.go @@ -0,0 +1,48 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package api + +import ( + "time" + "sync" +) + +const ( + Swarmfs_Version = "0.1" + mountTimeout = time.Second * 5 + maxFuseMounts = 5 +) + + +type SwarmFS struct { + swarmApi *Api + activeMounts map[string]*MountInfo + activeLock *sync.RWMutex +} + + + +func NewSwarmFS(api *Api) *SwarmFS { + swarmfs := &SwarmFS{ + swarmApi: api, + activeLock: &sync.RWMutex{}, + activeMounts: map[string]*MountInfo{}, + } + return swarmfs +} + + diff --git a/swarm/api/swarmfs_unix.go b/swarm/api/swarmfs_unix.go new file mode 100644 index 0000000000..ae0216e1d7 --- /dev/null +++ b/swarm/api/swarmfs_unix.go @@ -0,0 +1,266 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build linux darwin + +package api + +import ( + "path/filepath" + "fmt" + "strings" + "time" + "github.com/ethereum/go-ethereum/swarm/storage" + "bazil.org/fuse" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/common" + "bazil.org/fuse/fs" + "sync" +) + + +var ( + inode uint64 = 1 + inodeLock sync.RWMutex +) + +// information about every active mount +type MountInfo struct { + mountPoint string + manifestHash string + resolvedKey storage.Key + rootDir *Dir + fuseConnection *fuse.Conn +} + +// Inode numbers need to be unique, they are used for caching inside fuse +func NewInode() uint64 { + inodeLock.Lock() + defer inodeLock.Unlock() + inode += 1 + return inode +} + + + +func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { + + self.activeLock.Lock() + defer self.activeLock.Unlock() + + noOfActiveMounts := len(self.activeMounts) + if noOfActiveMounts >= maxFuseMounts { + err := fmt.Errorf("Max mount count reached. Cannot mount %s ", mountpoint) + log.Warn(err.Error()) + return err.Error(), err + } + + cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint)) + if err != nil { + return err.Error(), err + } + + if _, ok := self.activeMounts[cleanedMountPoint]; ok { + err := fmt.Errorf("Mountpoint %s already mounted.", cleanedMountPoint) + log.Warn(err.Error()) + return err.Error(), err + } + + log.Info(fmt.Sprintf("Attempting to mount %s ", cleanedMountPoint)) + key, _, path, err := self.swarmApi.parseAndResolve(mhash, true) + if err != nil { + errStr := fmt.Sprintf("Could not resolve %s : %v", mhash, err) + log.Warn(errStr) + return errStr, err + } + + if len(path) > 0 { + path += "/" + } + + quitC := make(chan bool) + trie, err := loadManifest(self.swarmApi.dpa, key, quitC) + if err != nil { + errStr := fmt.Sprintf("fs.Download: loadManifestTrie error: %v", err) + log.Warn(errStr) + return errStr, err + } + + dirTree := map[string]*Dir{} + + rootDir := &Dir{ + inode: NewInode(), + name: "root", + directories: nil, + files: nil, + } + dirTree["root"] = rootDir + + err = trie.listWithPrefix(path, quitC, func(entry *manifestTrieEntry, suffix string) { + + key = common.Hex2Bytes(entry.Hash) + fullpath := "/" + suffix + basepath := filepath.Dir(fullpath) + filename := filepath.Base(fullpath) + + parentDir := rootDir + dirUntilNow := "" + paths := strings.Split(basepath, "/") + for i := range paths { + if paths[i] != "" { + thisDir := paths[i] + dirUntilNow = dirUntilNow + "/" + thisDir + + if _, ok := dirTree[dirUntilNow]; !ok { + dirTree[dirUntilNow] = &Dir{ + inode: NewInode(), + name: thisDir, + path: dirUntilNow, + directories: nil, + files: nil, + } + parentDir.directories = append(parentDir.directories, dirTree[dirUntilNow]) + parentDir = dirTree[dirUntilNow] + + } else { + parentDir = dirTree[dirUntilNow] + } + + } + } + thisFile := &File{ + inode: NewInode(), + name: filename, + path: fullpath, + key: key, + swarmApi: self.swarmApi, + } + parentDir.files = append(parentDir.files, thisFile) + }) + + fconn, err := fuse.Mount(cleanedMountPoint, fuse.FSName("swarmfs"), fuse.VolumeName(mhash)) + if err != nil { + fuse.Unmount(cleanedMountPoint) + errStr := fmt.Sprintf("Mounting %s encountered error: %v", cleanedMountPoint, err) + log.Warn(errStr) + return errStr, err + } + + mounterr := make(chan error, 1) + go func() { + log.Info(fmt.Sprintf("Serving %s at %s", mhash, cleanedMountPoint)) + filesys := &FS{root: rootDir} + if err := fs.Serve(fconn, filesys); err != nil { + log.Warn(fmt.Sprintf("Could not Serve FS error: %v", err)) + } + }() + + // Check if the mount process has an error to report. + select { + + case <-time.After(mountTimeout): + err := fmt.Errorf("Mounting %s timed out.", cleanedMountPoint) + log.Warn(err.Error()) + return err.Error(), err + + case err := <-mounterr: + errStr := fmt.Sprintf("Mounting %s encountered error: %v", cleanedMountPoint, err) + log.Warn(errStr) + return errStr, err + + case <-fconn.Ready: + log.Debug(fmt.Sprintf("Mounting connection succeeded for : %v", cleanedMountPoint)) + } + + + + //Assemble and Store the mount information for future use + mountInformation := &MountInfo{ + mountPoint: cleanedMountPoint, + manifestHash: mhash, + resolvedKey: key, + rootDir: rootDir, + fuseConnection: fconn, + } + self.activeMounts[cleanedMountPoint] = mountInformation + + succString := fmt.Sprintf("Mounting successful for %s", cleanedMountPoint) + log.Info(succString) + + return succString, nil +} + +func (self *SwarmFS) Unmount(mountpoint string) (string, error) { + + self.activeLock.Lock() + defer self.activeLock.Unlock() + + cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint)) + if err != nil { + return err.Error(), err + } + + // Get the mount information based on the mountpoint argument + mountInfo := self.activeMounts[cleanedMountPoint] + + + if mountInfo == nil || mountInfo.mountPoint != cleanedMountPoint { + err := fmt.Errorf("Could not find mount information for %s ", cleanedMountPoint) + log.Warn(err.Error()) + return err.Error(), err + } + + err = fuse.Unmount(cleanedMountPoint) + if err != nil { + //TODO: try forceful unmount if normal unmount fails + errStr := fmt.Sprintf("UnMount error: %v", err) + log.Warn(errStr) + return errStr, err + } + + mountInfo.fuseConnection.Close() + + //remove the mount information from the active map + delete(self.activeMounts, cleanedMountPoint) + + succString := fmt.Sprintf("UnMounting %v succeeded", cleanedMountPoint) + log.Info(succString) + return succString, nil +} + +func (self *SwarmFS) Listmounts() (string, error) { + + self.activeLock.RLock() + defer self.activeLock.RUnlock() + + var rows []string + for mp := range self.activeMounts { + mountInfo := self.activeMounts[mp] + rows = append(rows, fmt.Sprintf("Swarm Root: %s, Mount Point: %s ", mountInfo.manifestHash, mountInfo.mountPoint)) + } + + return strings.Join(rows, "\n"), nil +} + +func (self *SwarmFS) Stop() bool { + + for mp := range self.activeMounts { + mountInfo := self.activeMounts[mp] + self.Unmount(mountInfo.mountPoint) + } + + return true +} diff --git a/swarm/api/swarmfs_unix_test.go b/swarm/api/swarmfs_unix_test.go new file mode 100644 index 0000000000..4f59dba5b6 --- /dev/null +++ b/swarm/api/swarmfs_unix_test.go @@ -0,0 +1,122 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build linux darwin + +package api + +import ( + "io/ioutil" + "os" + "path/filepath" + "testing" +) + +var testUploadDir, _ = ioutil.TempDir(os.TempDir(), "fuse-source") +var testMountDir, _ = ioutil.TempDir(os.TempDir(), "fuse-dest") + +func testFuseFileSystem(t *testing.T, f func(*FileSystem)) { + testApi(t, func(api *Api) { + f(NewFileSystem(api)) + }) +} + +func createTestFiles(t *testing.T, files []string) { + + os.RemoveAll(testUploadDir) + os.RemoveAll(testMountDir) + defer os.MkdirAll(testMountDir, 0777) + + for f := range files { + actualPath := filepath.Join(testUploadDir, files[f]) + filePath := filepath.Dir(actualPath) + + err := os.MkdirAll(filePath, 0777) + if err != nil { + t.Fatalf("Error creating directory '%v' : %v", filePath, err) + } + + _, err1 := os.OpenFile(actualPath, os.O_RDONLY|os.O_CREATE, 0666) + if err1 != nil { + t.Fatalf("Error creating file %v: %v", actualPath, err1) + } + } + +} + +func compareFiles(t *testing.T, files []string) { + + for f := range files { + + sourceFile := filepath.Join(testUploadDir, files[f]) + destinationFile := filepath.Join(testMountDir, files[f]) + + sfinfo, err := os.Stat(sourceFile) + if err != nil { + t.Fatalf("Source file %v missing in mount: %v", files[f], err) + } + + dfinfo, err := os.Stat(destinationFile) + if err != nil { + t.Fatalf("Destination file %v missing in mount: %v", files[f], err) + } + + if sfinfo.Size() != dfinfo.Size() { + t.Fatalf("Size mismatch source (%v) vs destination(%v)", sfinfo.Size(), dfinfo.Size()) + } + + if dfinfo.Mode().Perm().String() != "-r-x------" { + t.Fatalf("Permission is not 0500for file: %v", err) + } + + } +} + +func doHashTest(fs *FileSystem, t *testing.T, ensName string, files ...string) { + + createTestFiles(t, files) + bzzhash, err := fs.Upload(testUploadDir, "") + if err != nil { + t.Fatalf("Error uploading directory %v: %v", testUploadDir, err) + } + + swarmfs := NewSwarmFS(fs.api) + _ ,err1 := swarmfs.Mount(bzzhash, testMountDir) + if err1 != nil { + + t.Fatalf("Error mounting hash %v: %v", bzzhash, err) + } + compareFiles(t, files) + _, err2 := swarmfs.Unmount(testMountDir) + if err2 != nil { + t.Fatalf("Error unmounting path %v: %v", testMountDir, err) + } + swarmfs.Stop() + +} + +// mounting with manifest Hash +func TestFuseMountingScenarios(t *testing.T) { + testFuseFileSystem(t, func(fs *FileSystem) { + + //doHashTest(fs,t, "test","1.txt") + doHashTest(fs, t, "", "1.txt") + doHashTest(fs, t, "", "1.txt", "11.txt", "111.txt", "two/2.txt", "two/two/2.txt", "three/3.txt") + doHashTest(fs, t, "", "1/2/3/4/5/6/7/8/9/10/11/12/1.txt") + doHashTest(fs, t, "", "one/one.txt", "one.txt", "once/one.txt", "one/one/one.txt") + + }) +} diff --git a/swarm/api/swarmfs_windows.go b/swarm/api/swarmfs_windows.go new file mode 100644 index 0000000000..525a25399a --- /dev/null +++ b/swarm/api/swarmfs_windows.go @@ -0,0 +1,48 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build windows + +package api + +import ( + "github.com/ethereum/go-ethereum/log" +) + +// Dummy struct and functions to satsfy windows build +type MountInfo struct { +} + + +func (self *SwarmFS) Mount(mhash, mountpoint string) error { + log.Info("Platform not supported") + return nil +} + +func (self *SwarmFS) Unmount(mountpoint string) error { + log.Info("Platform not supported") + return nil +} + +func (self *SwarmFS) Listmounts() (string, error) { + log.Info("Platform not supported") + return "",nil +} + +func (self *SwarmFS) Stop() error { + log.Info("Platform not supported") + return nil +} \ No newline at end of file diff --git a/swarm/swarm.go b/swarm/swarm.go index bd256edaa2..0ce31bcad9 100644 --- a/swarm/swarm.go +++ b/swarm/swarm.go @@ -53,7 +53,8 @@ type Swarm struct { privateKey *ecdsa.PrivateKey corsString string swapEnabled bool - lstore *storage.LocalStore // local store, needs to store for releasing resources after node stopped + lstore *storage.LocalStore // local store, needs to store for releasing resources after node stopped + sfs *api.SwarmFS // need this to cleanup all the active mounts on node exit } type SwarmAPI struct { @@ -142,6 +143,9 @@ func NewSwarm(ctx *node.ServiceContext, backend chequebook.Backend, config *api. // Manifests for Smart Hosting log.Debug(fmt.Sprintf("-> Web3 virtual server API")) + self.sfs = api.NewSwarmFS(self.api) + log.Debug("-> Initializing Fuse file system") + return self, nil } @@ -216,7 +220,7 @@ func (self *Swarm) Stop() error { if self.lstore != nil { self.lstore.DbStore.Close() } - + self.sfs.Stop() return self.config.Save() } @@ -240,6 +244,7 @@ func (self *Swarm) APIs() []rpc.API { Service: api.NewStorage(self.api), Public: true, }, + { Namespace: "bzz", Version: "0.1", @@ -264,6 +269,12 @@ func (self *Swarm) APIs() []rpc.API { Service: chequebook.NewApi(self.config.Swap.Chequebook), Public: false, }, + { + Namespace: "swarmfs", + Version: api.Swarmfs_Version, + Service: self.sfs, + Public: false, + }, // {Namespace, Version, api.NewAdmin(self), false}, } } diff --git a/vendor/bazil.org/fuse/LICENSE b/vendor/bazil.org/fuse/LICENSE new file mode 100644 index 0000000000..4ac7cd8389 --- /dev/null +++ b/vendor/bazil.org/fuse/LICENSE @@ -0,0 +1,93 @@ +Copyright (c) 2013-2015 Tommi Virtanen. +Copyright (c) 2009, 2011, 2012 The Go Authors. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + + +The following included software components have additional copyright +notices and license terms that may differ from the above. + + +File fuse.go: + +// Adapted from Plan 9 from User Space's src/cmd/9pfuse/fuse.c, +// which carries this notice: +// +// The files in this directory are subject to the following license. +// +// The author of this software is Russ Cox. +// +// Copyright (c) 2006 Russ Cox +// +// Permission to use, copy, modify, and distribute this software for any +// purpose without fee is hereby granted, provided that this entire notice +// is included in all copies of any software which is or includes a copy +// or modification of this software and in all copies of the supporting +// documentation for such software. +// +// THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED +// WARRANTY. IN PARTICULAR, THE AUTHOR MAKES NO REPRESENTATION OR WARRANTY +// OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS +// FITNESS FOR ANY PARTICULAR PURPOSE. + + +File fuse_kernel.go: + +// Derived from FUSE's fuse_kernel.h +/* + This file defines the kernel interface of FUSE + Copyright (C) 2001-2007 Miklos Szeredi + + + This -- and only this -- header file may also be distributed under + the terms of the BSD Licence as follows: + + Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + SUCH DAMAGE. +*/ diff --git a/vendor/bazil.org/fuse/README.md b/vendor/bazil.org/fuse/README.md new file mode 100644 index 0000000000..8c6d556ee3 --- /dev/null +++ b/vendor/bazil.org/fuse/README.md @@ -0,0 +1,23 @@ +bazil.org/fuse -- Filesystems in Go +=================================== + +`bazil.org/fuse` is a Go library for writing FUSE userspace +filesystems. + +It is a from-scratch implementation of the kernel-userspace +communication protocol, and does not use the C library from the +project called FUSE. `bazil.org/fuse` embraces Go fully for safety and +ease of programming. + +Here’s how to get going: + + go get bazil.org/fuse + +Website: http://bazil.org/fuse/ + +Github repository: https://github.com/bazil/fuse + +API docs: http://godoc.org/bazil.org/fuse + +Our thanks to Russ Cox for his fuse library, which this project is +based on. diff --git a/vendor/bazil.org/fuse/buffer.go b/vendor/bazil.org/fuse/buffer.go new file mode 100644 index 0000000000..bb1d2b7769 --- /dev/null +++ b/vendor/bazil.org/fuse/buffer.go @@ -0,0 +1,35 @@ +package fuse + +import "unsafe" + +// buffer provides a mechanism for constructing a message from +// multiple segments. +type buffer []byte + +// alloc allocates size bytes and returns a pointer to the new +// segment. +func (w *buffer) alloc(size uintptr) unsafe.Pointer { + s := int(size) + if len(*w)+s > cap(*w) { + old := *w + *w = make([]byte, len(*w), 2*cap(*w)+s) + copy(*w, old) + } + l := len(*w) + *w = (*w)[:l+s] + return unsafe.Pointer(&(*w)[l]) +} + +// reset clears out the contents of the buffer. +func (w *buffer) reset() { + for i := range (*w)[:cap(*w)] { + (*w)[i] = 0 + } + *w = (*w)[:0] +} + +func newBuffer(extra uintptr) buffer { + const hdrSize = unsafe.Sizeof(outHeader{}) + buf := make(buffer, hdrSize, hdrSize+extra) + return buf +} diff --git a/vendor/bazil.org/fuse/debug.go b/vendor/bazil.org/fuse/debug.go new file mode 100644 index 0000000000..be9f900d5e --- /dev/null +++ b/vendor/bazil.org/fuse/debug.go @@ -0,0 +1,21 @@ +package fuse + +import ( + "runtime" +) + +func stack() string { + buf := make([]byte, 1024) + return string(buf[:runtime.Stack(buf, false)]) +} + +func nop(msg interface{}) {} + +// Debug is called to output debug messages, including protocol +// traces. The default behavior is to do nothing. +// +// The messages have human-friendly string representations and are +// safe to marshal to JSON. +// +// Implementations must not retain msg. +var Debug func(msg interface{}) = nop diff --git a/vendor/bazil.org/fuse/error_darwin.go b/vendor/bazil.org/fuse/error_darwin.go new file mode 100644 index 0000000000..a3fb89ca29 --- /dev/null +++ b/vendor/bazil.org/fuse/error_darwin.go @@ -0,0 +1,17 @@ +package fuse + +import ( + "syscall" +) + +const ( + ENOATTR = Errno(syscall.ENOATTR) +) + +const ( + errNoXattr = ENOATTR +) + +func init() { + errnoNames[errNoXattr] = "ENOATTR" +} diff --git a/vendor/bazil.org/fuse/error_freebsd.go b/vendor/bazil.org/fuse/error_freebsd.go new file mode 100644 index 0000000000..c6ea6d6e71 --- /dev/null +++ b/vendor/bazil.org/fuse/error_freebsd.go @@ -0,0 +1,15 @@ +package fuse + +import "syscall" + +const ( + ENOATTR = Errno(syscall.ENOATTR) +) + +const ( + errNoXattr = ENOATTR +) + +func init() { + errnoNames[errNoXattr] = "ENOATTR" +} diff --git a/vendor/bazil.org/fuse/error_linux.go b/vendor/bazil.org/fuse/error_linux.go new file mode 100644 index 0000000000..6f113e71ed --- /dev/null +++ b/vendor/bazil.org/fuse/error_linux.go @@ -0,0 +1,17 @@ +package fuse + +import ( + "syscall" +) + +const ( + ENODATA = Errno(syscall.ENODATA) +) + +const ( + errNoXattr = ENODATA +) + +func init() { + errnoNames[errNoXattr] = "ENODATA" +} diff --git a/vendor/bazil.org/fuse/error_std.go b/vendor/bazil.org/fuse/error_std.go new file mode 100644 index 0000000000..398f43fbf6 --- /dev/null +++ b/vendor/bazil.org/fuse/error_std.go @@ -0,0 +1,31 @@ +package fuse + +// There is very little commonality in extended attribute errors +// across platforms. +// +// getxattr return value for "extended attribute does not exist" is +// ENOATTR on OS X, and ENODATA on Linux and apparently at least +// NetBSD. There may be a #define ENOATTR on Linux too, but the value +// is ENODATA in the actual syscalls. FreeBSD and OpenBSD have no +// ENODATA, only ENOATTR. ENOATTR is not in any of the standards, +// ENODATA exists but is only used for STREAMs. +// +// Each platform will define it a errNoXattr constant, and this file +// will enforce that it implements the right interfaces and hide the +// implementation. +// +// https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man2/getxattr.2.html +// http://mail-index.netbsd.org/tech-kern/2012/04/30/msg013090.html +// http://mail-index.netbsd.org/tech-kern/2012/04/30/msg013097.html +// http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html +// http://www.freebsd.org/cgi/man.cgi?query=extattr_get_file&sektion=2 +// http://nixdoc.net/man-pages/openbsd/man2/extattr_get_file.2.html + +// ErrNoXattr is a platform-independent error value meaning the +// extended attribute was not found. It can be used to respond to +// GetxattrRequest and such. +const ErrNoXattr = errNoXattr + +var _ error = ErrNoXattr +var _ Errno = ErrNoXattr +var _ ErrorNumber = ErrNoXattr diff --git a/vendor/bazil.org/fuse/fs/serve.go b/vendor/bazil.org/fuse/fs/serve.go new file mode 100644 index 0000000000..e9fc56590f --- /dev/null +++ b/vendor/bazil.org/fuse/fs/serve.go @@ -0,0 +1,1568 @@ +// FUSE service loop, for servers that wish to use it. + +package fs // import "bazil.org/fuse/fs" + +import ( + "encoding/binary" + "fmt" + "hash/fnv" + "io" + "log" + "reflect" + "runtime" + "strings" + "sync" + "time" + + "golang.org/x/net/context" +) + +import ( + "bytes" + + "bazil.org/fuse" + "bazil.org/fuse/fuseutil" +) + +const ( + attrValidTime = 1 * time.Minute + entryValidTime = 1 * time.Minute +) + +// TODO: FINISH DOCS + +// An FS is the interface required of a file system. +// +// Other FUSE requests can be handled by implementing methods from the +// FS* interfaces, for example FSStatfser. +type FS interface { + // Root is called to obtain the Node for the file system root. + Root() (Node, error) +} + +type FSStatfser interface { + // Statfs is called to obtain file system metadata. + // It should write that data to resp. + Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.StatfsResponse) error +} + +type FSDestroyer interface { + // Destroy is called when the file system is shutting down. + // + // Linux only sends this request for block device backed (fuseblk) + // filesystems, to allow them to flush writes to disk before the + // unmount completes. + Destroy() +} + +type FSInodeGenerator interface { + // GenerateInode is called to pick a dynamic inode number when it + // would otherwise be 0. + // + // Not all filesystems bother tracking inodes, but FUSE requires + // the inode to be set, and fewer duplicates in general makes UNIX + // tools work better. + // + // Operations where the nodes may return 0 inodes include Getattr, + // Setattr and ReadDir. + // + // If FS does not implement FSInodeGenerator, GenerateDynamicInode + // is used. + // + // Implementing this is useful to e.g. constrain the range of + // inode values used for dynamic inodes. + GenerateInode(parentInode uint64, name string) uint64 +} + +// A Node is the interface required of a file or directory. +// See the documentation for type FS for general information +// pertaining to all methods. +// +// A Node must be usable as a map key, that is, it cannot be a +// function, map or slice. +// +// Other FUSE requests can be handled by implementing methods from the +// Node* interfaces, for example NodeOpener. +// +// Methods returning Node should take care to return the same Node +// when the result is logically the same instance. Without this, each +// Node will get a new NodeID, causing spurious cache invalidations, +// extra lookups and aliasing anomalies. This may not matter for a +// simple, read-only filesystem. +type Node interface { + // Attr fills attr with the standard metadata for the node. + // + // Fields with reasonable defaults are prepopulated. For example, + // all times are set to a fixed moment when the program started. + // + // If Inode is left as 0, a dynamic inode number is chosen. + // + // The result may be cached for the duration set in Valid. + Attr(ctx context.Context, attr *fuse.Attr) error +} + +type NodeGetattrer interface { + // Getattr obtains the standard metadata for the receiver. + // It should store that metadata in resp. + // + // If this method is not implemented, the attributes will be + // generated based on Attr(), with zero values filled in. + Getattr(ctx context.Context, req *fuse.GetattrRequest, resp *fuse.GetattrResponse) error +} + +type NodeSetattrer interface { + // Setattr sets the standard metadata for the receiver. + // + // Note, this is also used to communicate changes in the size of + // the file, outside of Writes. + // + // req.Valid is a bitmask of what fields are actually being set. + // For example, the method should not change the mode of the file + // unless req.Valid.Mode() is true. + Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error +} + +type NodeSymlinker interface { + // Symlink creates a new symbolic link in the receiver, which must be a directory. + // + // TODO is the above true about directories? + Symlink(ctx context.Context, req *fuse.SymlinkRequest) (Node, error) +} + +// This optional request will be called only for symbolic link nodes. +type NodeReadlinker interface { + // Readlink reads a symbolic link. + Readlink(ctx context.Context, req *fuse.ReadlinkRequest) (string, error) +} + +type NodeLinker interface { + // Link creates a new directory entry in the receiver based on an + // existing Node. Receiver must be a directory. + Link(ctx context.Context, req *fuse.LinkRequest, old Node) (Node, error) +} + +type NodeRemover interface { + // Remove removes the entry with the given name from + // the receiver, which must be a directory. The entry to be removed + // may correspond to a file (unlink) or to a directory (rmdir). + Remove(ctx context.Context, req *fuse.RemoveRequest) error +} + +type NodeAccesser interface { + // Access checks whether the calling context has permission for + // the given operations on the receiver. If so, Access should + // return nil. If not, Access should return EPERM. + // + // Note that this call affects the result of the access(2) system + // call but not the open(2) system call. If Access is not + // implemented, the Node behaves as if it always returns nil + // (permission granted), relying on checks in Open instead. + Access(ctx context.Context, req *fuse.AccessRequest) error +} + +type NodeStringLookuper interface { + // Lookup looks up a specific entry in the receiver, + // which must be a directory. Lookup should return a Node + // corresponding to the entry. If the name does not exist in + // the directory, Lookup should return ENOENT. + // + // Lookup need not to handle the names "." and "..". + Lookup(ctx context.Context, name string) (Node, error) +} + +type NodeRequestLookuper interface { + // Lookup looks up a specific entry in the receiver. + // See NodeStringLookuper for more. + Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (Node, error) +} + +type NodeMkdirer interface { + Mkdir(ctx context.Context, req *fuse.MkdirRequest) (Node, error) +} + +type NodeOpener interface { + // Open opens the receiver. After a successful open, a client + // process has a file descriptor referring to this Handle. + // + // Open can also be also called on non-files. For example, + // directories are Opened for ReadDir or fchdir(2). + // + // If this method is not implemented, the open will always + // succeed, and the Node itself will be used as the Handle. + // + // XXX note about access. XXX OpenFlags. + Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (Handle, error) +} + +type NodeCreater interface { + // Create creates a new directory entry in the receiver, which + // must be a directory. + Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (Node, Handle, error) +} + +type NodeForgetter interface { + // Forget about this node. This node will not receive further + // method calls. + // + // Forget is not necessarily seen on unmount, as all nodes are + // implicitly forgotten as part part of the unmount. + Forget() +} + +type NodeRenamer interface { + Rename(ctx context.Context, req *fuse.RenameRequest, newDir Node) error +} + +type NodeMknoder interface { + Mknod(ctx context.Context, req *fuse.MknodRequest) (Node, error) +} + +// TODO this should be on Handle not Node +type NodeFsyncer interface { + Fsync(ctx context.Context, req *fuse.FsyncRequest) error +} + +type NodeGetxattrer interface { + // Getxattr gets an extended attribute by the given name from the + // node. + // + // If there is no xattr by that name, returns fuse.ErrNoXattr. + Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error +} + +type NodeListxattrer interface { + // Listxattr lists the extended attributes recorded for the node. + Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error +} + +type NodeSetxattrer interface { + // Setxattr sets an extended attribute with the given name and + // value for the node. + Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error +} + +type NodeRemovexattrer interface { + // Removexattr removes an extended attribute for the name. + // + // If there is no xattr by that name, returns fuse.ErrNoXattr. + Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error +} + +var startTime = time.Now() + +func nodeAttr(ctx context.Context, n Node, attr *fuse.Attr) error { + attr.Valid = attrValidTime + attr.Nlink = 1 + attr.Atime = startTime + attr.Mtime = startTime + attr.Ctime = startTime + attr.Crtime = startTime + if err := n.Attr(ctx, attr); err != nil { + return err + } + return nil +} + +// A Handle is the interface required of an opened file or directory. +// See the documentation for type FS for general information +// pertaining to all methods. +// +// Other FUSE requests can be handled by implementing methods from the +// Handle* interfaces. The most common to implement are HandleReader, +// HandleReadDirer, and HandleWriter. +// +// TODO implement methods: Getlk, Setlk, Setlkw +type Handle interface { +} + +type HandleFlusher interface { + // Flush is called each time the file or directory is closed. + // Because there can be multiple file descriptors referring to a + // single opened file, Flush can be called multiple times. + Flush(ctx context.Context, req *fuse.FlushRequest) error +} + +type HandleReadAller interface { + ReadAll(ctx context.Context) ([]byte, error) +} + +type HandleReadDirAller interface { + ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) +} + +type HandleReader interface { + // Read requests to read data from the handle. + // + // There is a page cache in the kernel that normally submits only + // page-aligned reads spanning one or more pages. However, you + // should not rely on this. To see individual requests as + // submitted by the file system clients, set OpenDirectIO. + // + // Note that reads beyond the size of the file as reported by Attr + // are not even attempted (except in OpenDirectIO mode). + Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error +} + +type HandleWriter interface { + // Write requests to write data into the handle at the given offset. + // Store the amount of data written in resp.Size. + // + // There is a writeback page cache in the kernel that normally submits + // only page-aligned writes spanning one or more pages. However, + // you should not rely on this. To see individual requests as + // submitted by the file system clients, set OpenDirectIO. + // + // Writes that grow the file are expected to update the file size + // (as seen through Attr). Note that file size changes are + // communicated also through Setattr. + Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error +} + +type HandleReleaser interface { + Release(ctx context.Context, req *fuse.ReleaseRequest) error +} + +type Config struct { + // Function to send debug log messages to. If nil, use fuse.Debug. + // Note that changing this or fuse.Debug may not affect existing + // calls to Serve. + // + // See fuse.Debug for the rules that log functions must follow. + Debug func(msg interface{}) + + // Function to put things into context for processing the request. + // The returned context must have ctx as its parent. + // + // Note that changing this may not affect existing calls to Serve. + // + // Must not retain req. + WithContext func(ctx context.Context, req fuse.Request) context.Context +} + +// New returns a new FUSE server ready to serve this kernel FUSE +// connection. +// +// Config may be nil. +func New(conn *fuse.Conn, config *Config) *Server { + s := &Server{ + conn: conn, + req: map[fuse.RequestID]*serveRequest{}, + nodeRef: map[Node]fuse.NodeID{}, + dynamicInode: GenerateDynamicInode, + } + if config != nil { + s.debug = config.Debug + s.context = config.WithContext + } + if s.debug == nil { + s.debug = fuse.Debug + } + return s +} + +type Server struct { + // set in New + conn *fuse.Conn + debug func(msg interface{}) + context func(ctx context.Context, req fuse.Request) context.Context + + // set once at Serve time + fs FS + dynamicInode func(parent uint64, name string) uint64 + + // state, protected by meta + meta sync.Mutex + req map[fuse.RequestID]*serveRequest + node []*serveNode + nodeRef map[Node]fuse.NodeID + handle []*serveHandle + freeNode []fuse.NodeID + freeHandle []fuse.HandleID + nodeGen uint64 + + // Used to ensure worker goroutines finish before Serve returns + wg sync.WaitGroup +} + +// Serve serves the FUSE connection by making calls to the methods +// of fs and the Nodes and Handles it makes available. It returns only +// when the connection has been closed or an unexpected error occurs. +func (s *Server) Serve(fs FS) error { + defer s.wg.Wait() // Wait for worker goroutines to complete before return + + s.fs = fs + if dyn, ok := fs.(FSInodeGenerator); ok { + s.dynamicInode = dyn.GenerateInode + } + + root, err := fs.Root() + if err != nil { + return fmt.Errorf("cannot obtain root node: %v", err) + } + // Recognize the root node if it's ever returned from Lookup, + // passed to Invalidate, etc. + s.nodeRef[root] = 1 + s.node = append(s.node, nil, &serveNode{ + inode: 1, + generation: s.nodeGen, + node: root, + refs: 1, + }) + s.handle = append(s.handle, nil) + + for { + req, err := s.conn.ReadRequest() + if err != nil { + if err == io.EOF { + break + } + return err + } + + s.wg.Add(1) + go func() { + defer s.wg.Done() + s.serve(req) + }() + } + return nil +} + +// Serve serves a FUSE connection with the default settings. See +// Server.Serve. +func Serve(c *fuse.Conn, fs FS) error { + server := New(c, nil) + return server.Serve(fs) +} + +type nothing struct{} + +type serveRequest struct { + Request fuse.Request + cancel func() +} + +type serveNode struct { + inode uint64 + generation uint64 + node Node + refs uint64 + + // Delay freeing the NodeID until waitgroup is done. This allows + // using the NodeID for short periods of time without holding the + // Server.meta lock. + // + // Rules: + // + // - hold Server.meta while calling wg.Add, then unlock + // - do NOT try to reacquire Server.meta + wg sync.WaitGroup +} + +func (sn *serveNode) attr(ctx context.Context, attr *fuse.Attr) error { + err := nodeAttr(ctx, sn.node, attr) + if attr.Inode == 0 { + attr.Inode = sn.inode + } + return err +} + +type serveHandle struct { + handle Handle + readData []byte + nodeID fuse.NodeID +} + +// NodeRef is deprecated. It remains here to decrease code churn on +// FUSE library users. You may remove it from your program now; +// returning the same Node values are now recognized automatically, +// without needing NodeRef. +type NodeRef struct{} + +func (c *Server) saveNode(inode uint64, node Node) (id fuse.NodeID, gen uint64) { + c.meta.Lock() + defer c.meta.Unlock() + + if id, ok := c.nodeRef[node]; ok { + sn := c.node[id] + sn.refs++ + return id, sn.generation + } + + sn := &serveNode{inode: inode, node: node, refs: 1} + if n := len(c.freeNode); n > 0 { + id = c.freeNode[n-1] + c.freeNode = c.freeNode[:n-1] + c.node[id] = sn + c.nodeGen++ + } else { + id = fuse.NodeID(len(c.node)) + c.node = append(c.node, sn) + } + sn.generation = c.nodeGen + c.nodeRef[node] = id + return id, sn.generation +} + +func (c *Server) saveHandle(handle Handle, nodeID fuse.NodeID) (id fuse.HandleID) { + c.meta.Lock() + shandle := &serveHandle{handle: handle, nodeID: nodeID} + if n := len(c.freeHandle); n > 0 { + id = c.freeHandle[n-1] + c.freeHandle = c.freeHandle[:n-1] + c.handle[id] = shandle + } else { + id = fuse.HandleID(len(c.handle)) + c.handle = append(c.handle, shandle) + } + c.meta.Unlock() + return +} + +type nodeRefcountDropBug struct { + N uint64 + Refs uint64 + Node fuse.NodeID +} + +func (n *nodeRefcountDropBug) String() string { + return fmt.Sprintf("bug: trying to drop %d of %d references to %v", n.N, n.Refs, n.Node) +} + +func (c *Server) dropNode(id fuse.NodeID, n uint64) (forget bool) { + c.meta.Lock() + defer c.meta.Unlock() + snode := c.node[id] + + if snode == nil { + // this should only happen if refcounts kernel<->us disagree + // *and* two ForgetRequests for the same node race each other; + // this indicates a bug somewhere + c.debug(nodeRefcountDropBug{N: n, Node: id}) + + // we may end up triggering Forget twice, but that's better + // than not even once, and that's the best we can do + return true + } + + if n > snode.refs { + c.debug(nodeRefcountDropBug{N: n, Refs: snode.refs, Node: id}) + n = snode.refs + } + + snode.refs -= n + if snode.refs == 0 { + snode.wg.Wait() + c.node[id] = nil + delete(c.nodeRef, snode.node) + c.freeNode = append(c.freeNode, id) + return true + } + return false +} + +func (c *Server) dropHandle(id fuse.HandleID) { + c.meta.Lock() + c.handle[id] = nil + c.freeHandle = append(c.freeHandle, id) + c.meta.Unlock() +} + +type missingHandle struct { + Handle fuse.HandleID + MaxHandle fuse.HandleID +} + +func (m missingHandle) String() string { + return fmt.Sprint("missing handle: ", m.Handle, m.MaxHandle) +} + +// Returns nil for invalid handles. +func (c *Server) getHandle(id fuse.HandleID) (shandle *serveHandle) { + c.meta.Lock() + defer c.meta.Unlock() + if id < fuse.HandleID(len(c.handle)) { + shandle = c.handle[uint(id)] + } + if shandle == nil { + c.debug(missingHandle{ + Handle: id, + MaxHandle: fuse.HandleID(len(c.handle)), + }) + } + return +} + +type request struct { + Op string + Request *fuse.Header + In interface{} `json:",omitempty"` +} + +func (r request) String() string { + return fmt.Sprintf("<- %s", r.In) +} + +type logResponseHeader struct { + ID fuse.RequestID +} + +func (m logResponseHeader) String() string { + return fmt.Sprintf("ID=%v", m.ID) +} + +type response struct { + Op string + Request logResponseHeader + Out interface{} `json:",omitempty"` + // Errno contains the errno value as a string, for example "EPERM". + Errno string `json:",omitempty"` + // Error may contain a free form error message. + Error string `json:",omitempty"` +} + +func (r response) errstr() string { + s := r.Errno + if r.Error != "" { + // prefix the errno constant to the long form message + s = s + ": " + r.Error + } + return s +} + +func (r response) String() string { + switch { + case r.Errno != "" && r.Out != nil: + return fmt.Sprintf("-> [%v] %v error=%s", r.Request, r.Out, r.errstr()) + case r.Errno != "": + return fmt.Sprintf("-> [%v] %s error=%s", r.Request, r.Op, r.errstr()) + case r.Out != nil: + // make sure (seemingly) empty values are readable + switch r.Out.(type) { + case string: + return fmt.Sprintf("-> [%v] %s %q", r.Request, r.Op, r.Out) + case []byte: + return fmt.Sprintf("-> [%v] %s [% x]", r.Request, r.Op, r.Out) + default: + return fmt.Sprintf("-> [%v] %v", r.Request, r.Out) + } + default: + return fmt.Sprintf("-> [%v] %s", r.Request, r.Op) + } +} + +type notification struct { + Op string + Node fuse.NodeID + Out interface{} `json:",omitempty"` + Err string `json:",omitempty"` +} + +func (n notification) String() string { + var buf bytes.Buffer + fmt.Fprintf(&buf, "=> %s %v", n.Op, n.Node) + if n.Out != nil { + // make sure (seemingly) empty values are readable + switch n.Out.(type) { + case string: + fmt.Fprintf(&buf, " %q", n.Out) + case []byte: + fmt.Fprintf(&buf, " [% x]", n.Out) + default: + fmt.Fprintf(&buf, " %s", n.Out) + } + } + if n.Err != "" { + fmt.Fprintf(&buf, " Err:%v", n.Err) + } + return buf.String() +} + +type logMissingNode struct { + MaxNode fuse.NodeID +} + +func opName(req fuse.Request) string { + t := reflect.Indirect(reflect.ValueOf(req)).Type() + s := t.Name() + s = strings.TrimSuffix(s, "Request") + return s +} + +type logLinkRequestOldNodeNotFound struct { + Request *fuse.Header + In *fuse.LinkRequest +} + +func (m *logLinkRequestOldNodeNotFound) String() string { + return fmt.Sprintf("In LinkRequest (request %v), node %d not found", m.Request.Hdr().ID, m.In.OldNode) +} + +type renameNewDirNodeNotFound struct { + Request *fuse.Header + In *fuse.RenameRequest +} + +func (m *renameNewDirNodeNotFound) String() string { + return fmt.Sprintf("In RenameRequest (request %v), node %d not found", m.Request.Hdr().ID, m.In.NewDir) +} + +type handlerPanickedError struct { + Request interface{} + Err interface{} +} + +var _ error = handlerPanickedError{} + +func (h handlerPanickedError) Error() string { + return fmt.Sprintf("handler panicked: %v", h.Err) +} + +var _ fuse.ErrorNumber = handlerPanickedError{} + +func (h handlerPanickedError) Errno() fuse.Errno { + if err, ok := h.Err.(fuse.ErrorNumber); ok { + return err.Errno() + } + return fuse.DefaultErrno +} + +// handlerTerminatedError happens when a handler terminates itself +// with runtime.Goexit. This is most commonly because of incorrect use +// of testing.TB.FailNow, typically via t.Fatal. +type handlerTerminatedError struct { + Request interface{} +} + +var _ error = handlerTerminatedError{} + +func (h handlerTerminatedError) Error() string { + return fmt.Sprintf("handler terminated (called runtime.Goexit)") +} + +var _ fuse.ErrorNumber = handlerTerminatedError{} + +func (h handlerTerminatedError) Errno() fuse.Errno { + return fuse.DefaultErrno +} + +type handleNotReaderError struct { + handle Handle +} + +var _ error = handleNotReaderError{} + +func (e handleNotReaderError) Error() string { + return fmt.Sprintf("handle has no Read: %T", e.handle) +} + +var _ fuse.ErrorNumber = handleNotReaderError{} + +func (e handleNotReaderError) Errno() fuse.Errno { + return fuse.ENOTSUP +} + +func initLookupResponse(s *fuse.LookupResponse) { + s.EntryValid = entryValidTime +} + +func (c *Server) serve(r fuse.Request) { + ctx, cancel := context.WithCancel(context.Background()) + defer cancel() + parentCtx := ctx + if c.context != nil { + ctx = c.context(ctx, r) + } + + req := &serveRequest{Request: r, cancel: cancel} + + c.debug(request{ + Op: opName(r), + Request: r.Hdr(), + In: r, + }) + var node Node + var snode *serveNode + c.meta.Lock() + hdr := r.Hdr() + if id := hdr.Node; id != 0 { + if id < fuse.NodeID(len(c.node)) { + snode = c.node[uint(id)] + } + if snode == nil { + c.meta.Unlock() + c.debug(response{ + Op: opName(r), + Request: logResponseHeader{ID: hdr.ID}, + Error: fuse.ESTALE.ErrnoName(), + // this is the only place that sets both Error and + // Out; not sure if i want to do that; might get rid + // of len(c.node) things altogether + Out: logMissingNode{ + MaxNode: fuse.NodeID(len(c.node)), + }, + }) + r.RespondError(fuse.ESTALE) + return + } + node = snode.node + } + if c.req[hdr.ID] != nil { + // This happens with OSXFUSE. Assume it's okay and + // that we'll never see an interrupt for this one. + // Otherwise everything wedges. TODO: Report to OSXFUSE? + // + // TODO this might have been because of missing done() calls + } else { + c.req[hdr.ID] = req + } + c.meta.Unlock() + + // Call this before responding. + // After responding is too late: we might get another request + // with the same ID and be very confused. + done := func(resp interface{}) { + msg := response{ + Op: opName(r), + Request: logResponseHeader{ID: hdr.ID}, + } + if err, ok := resp.(error); ok { + msg.Error = err.Error() + if ferr, ok := err.(fuse.ErrorNumber); ok { + errno := ferr.Errno() + msg.Errno = errno.ErrnoName() + if errno == err { + // it's just a fuse.Errno with no extra detail; + // skip the textual message for log readability + msg.Error = "" + } + } else { + msg.Errno = fuse.DefaultErrno.ErrnoName() + } + } else { + msg.Out = resp + } + c.debug(msg) + + c.meta.Lock() + delete(c.req, hdr.ID) + c.meta.Unlock() + } + + var responded bool + defer func() { + if rec := recover(); rec != nil { + const size = 1 << 16 + buf := make([]byte, size) + n := runtime.Stack(buf, false) + buf = buf[:n] + log.Printf("fuse: panic in handler for %v: %v\n%s", r, rec, buf) + err := handlerPanickedError{ + Request: r, + Err: rec, + } + done(err) + r.RespondError(err) + return + } + + if !responded { + err := handlerTerminatedError{ + Request: r, + } + done(err) + r.RespondError(err) + } + }() + + if err := c.handleRequest(ctx, node, snode, r, done); err != nil { + if err == context.Canceled { + select { + case <-parentCtx.Done(): + // We canceled the parent context because of an + // incoming interrupt request, so return EINTR + // to trigger the right behavior in the client app. + // + // Only do this when it's the parent context that was + // canceled, not a context controlled by the program + // using this library, so we don't return EINTR too + // eagerly -- it might cause busy loops. + // + // Decent write-up on role of EINTR: + // http://250bpm.com/blog:12 + err = fuse.EINTR + default: + // nothing + } + } + done(err) + r.RespondError(err) + } + + // disarm runtime.Goexit protection + responded = true +} + +// handleRequest will either a) call done(s) and r.Respond(s) OR b) return an error. +func (c *Server) handleRequest(ctx context.Context, node Node, snode *serveNode, r fuse.Request, done func(resp interface{})) error { + switch r := r.(type) { + default: + // Note: To FUSE, ENOSYS means "this server never implements this request." + // It would be inappropriate to return ENOSYS for other operations in this + // switch that might only be unavailable in some contexts, not all. + return fuse.ENOSYS + + case *fuse.StatfsRequest: + s := &fuse.StatfsResponse{} + if fs, ok := c.fs.(FSStatfser); ok { + if err := fs.Statfs(ctx, r, s); err != nil { + return err + } + } + done(s) + r.Respond(s) + return nil + + // Node operations. + case *fuse.GetattrRequest: + s := &fuse.GetattrResponse{} + if n, ok := node.(NodeGetattrer); ok { + if err := n.Getattr(ctx, r, s); err != nil { + return err + } + } else { + if err := snode.attr(ctx, &s.Attr); err != nil { + return err + } + } + done(s) + r.Respond(s) + return nil + + case *fuse.SetattrRequest: + s := &fuse.SetattrResponse{} + if n, ok := node.(NodeSetattrer); ok { + if err := n.Setattr(ctx, r, s); err != nil { + return err + } + } + + if err := snode.attr(ctx, &s.Attr); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + + case *fuse.SymlinkRequest: + s := &fuse.SymlinkResponse{} + initLookupResponse(&s.LookupResponse) + n, ok := node.(NodeSymlinker) + if !ok { + return fuse.EIO // XXX or EPERM like Mkdir? + } + n2, err := n.Symlink(ctx, r) + if err != nil { + return err + } + if err := c.saveLookup(ctx, &s.LookupResponse, snode, r.NewName, n2); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + + case *fuse.ReadlinkRequest: + n, ok := node.(NodeReadlinker) + if !ok { + return fuse.EIO /// XXX or EPERM? + } + target, err := n.Readlink(ctx, r) + if err != nil { + return err + } + done(target) + r.Respond(target) + return nil + + case *fuse.LinkRequest: + n, ok := node.(NodeLinker) + if !ok { + return fuse.EIO /// XXX or EPERM? + } + c.meta.Lock() + var oldNode *serveNode + if int(r.OldNode) < len(c.node) { + oldNode = c.node[r.OldNode] + } + c.meta.Unlock() + if oldNode == nil { + c.debug(logLinkRequestOldNodeNotFound{ + Request: r.Hdr(), + In: r, + }) + return fuse.EIO + } + n2, err := n.Link(ctx, r, oldNode.node) + if err != nil { + return err + } + s := &fuse.LookupResponse{} + initLookupResponse(s) + if err := c.saveLookup(ctx, s, snode, r.NewName, n2); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + + case *fuse.RemoveRequest: + n, ok := node.(NodeRemover) + if !ok { + return fuse.EIO /// XXX or EPERM? + } + err := n.Remove(ctx, r) + if err != nil { + return err + } + done(nil) + r.Respond() + return nil + + case *fuse.AccessRequest: + if n, ok := node.(NodeAccesser); ok { + if err := n.Access(ctx, r); err != nil { + return err + } + } + done(nil) + r.Respond() + return nil + + case *fuse.LookupRequest: + var n2 Node + var err error + s := &fuse.LookupResponse{} + initLookupResponse(s) + if n, ok := node.(NodeStringLookuper); ok { + n2, err = n.Lookup(ctx, r.Name) + } else if n, ok := node.(NodeRequestLookuper); ok { + n2, err = n.Lookup(ctx, r, s) + } else { + return fuse.ENOENT + } + if err != nil { + return err + } + if err := c.saveLookup(ctx, s, snode, r.Name, n2); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + + case *fuse.MkdirRequest: + s := &fuse.MkdirResponse{} + initLookupResponse(&s.LookupResponse) + n, ok := node.(NodeMkdirer) + if !ok { + return fuse.EPERM + } + n2, err := n.Mkdir(ctx, r) + if err != nil { + return err + } + if err := c.saveLookup(ctx, &s.LookupResponse, snode, r.Name, n2); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + + case *fuse.OpenRequest: + s := &fuse.OpenResponse{} + var h2 Handle + if n, ok := node.(NodeOpener); ok { + hh, err := n.Open(ctx, r, s) + if err != nil { + return err + } + h2 = hh + } else { + h2 = node + } + s.Handle = c.saveHandle(h2, r.Hdr().Node) + done(s) + r.Respond(s) + return nil + + case *fuse.CreateRequest: + n, ok := node.(NodeCreater) + if !ok { + // If we send back ENOSYS, FUSE will try mknod+open. + return fuse.EPERM + } + s := &fuse.CreateResponse{OpenResponse: fuse.OpenResponse{}} + initLookupResponse(&s.LookupResponse) + n2, h2, err := n.Create(ctx, r, s) + if err != nil { + return err + } + if err := c.saveLookup(ctx, &s.LookupResponse, snode, r.Name, n2); err != nil { + return err + } + s.Handle = c.saveHandle(h2, r.Hdr().Node) + done(s) + r.Respond(s) + return nil + + case *fuse.GetxattrRequest: + n, ok := node.(NodeGetxattrer) + if !ok { + return fuse.ENOTSUP + } + s := &fuse.GetxattrResponse{} + err := n.Getxattr(ctx, r, s) + if err != nil { + return err + } + if r.Size != 0 && uint64(len(s.Xattr)) > uint64(r.Size) { + return fuse.ERANGE + } + done(s) + r.Respond(s) + return nil + + case *fuse.ListxattrRequest: + n, ok := node.(NodeListxattrer) + if !ok { + return fuse.ENOTSUP + } + s := &fuse.ListxattrResponse{} + err := n.Listxattr(ctx, r, s) + if err != nil { + return err + } + if r.Size != 0 && uint64(len(s.Xattr)) > uint64(r.Size) { + return fuse.ERANGE + } + done(s) + r.Respond(s) + return nil + + case *fuse.SetxattrRequest: + n, ok := node.(NodeSetxattrer) + if !ok { + return fuse.ENOTSUP + } + err := n.Setxattr(ctx, r) + if err != nil { + return err + } + done(nil) + r.Respond() + return nil + + case *fuse.RemovexattrRequest: + n, ok := node.(NodeRemovexattrer) + if !ok { + return fuse.ENOTSUP + } + err := n.Removexattr(ctx, r) + if err != nil { + return err + } + done(nil) + r.Respond() + return nil + + case *fuse.ForgetRequest: + forget := c.dropNode(r.Hdr().Node, r.N) + if forget { + n, ok := node.(NodeForgetter) + if ok { + n.Forget() + } + } + done(nil) + r.Respond() + return nil + + // Handle operations. + case *fuse.ReadRequest: + shandle := c.getHandle(r.Handle) + if shandle == nil { + return fuse.ESTALE + } + handle := shandle.handle + + s := &fuse.ReadResponse{Data: make([]byte, 0, r.Size)} + if r.Dir { + if h, ok := handle.(HandleReadDirAller); ok { + // detect rewinddir(3) or similar seek and refresh + // contents + if r.Offset == 0 { + shandle.readData = nil + } + + if shandle.readData == nil { + dirs, err := h.ReadDirAll(ctx) + if err != nil { + return err + } + var data []byte + for _, dir := range dirs { + if dir.Inode == 0 { + dir.Inode = c.dynamicInode(snode.inode, dir.Name) + } + data = fuse.AppendDirent(data, dir) + } + shandle.readData = data + } + fuseutil.HandleRead(r, s, shandle.readData) + done(s) + r.Respond(s) + return nil + } + } else { + if h, ok := handle.(HandleReadAller); ok { + if shandle.readData == nil { + data, err := h.ReadAll(ctx) + if err != nil { + return err + } + if data == nil { + data = []byte{} + } + shandle.readData = data + } + fuseutil.HandleRead(r, s, shandle.readData) + done(s) + r.Respond(s) + return nil + } + h, ok := handle.(HandleReader) + if !ok { + err := handleNotReaderError{handle: handle} + return err + } + if err := h.Read(ctx, r, s); err != nil { + return err + } + } + done(s) + r.Respond(s) + return nil + + case *fuse.WriteRequest: + shandle := c.getHandle(r.Handle) + if shandle == nil { + return fuse.ESTALE + } + + s := &fuse.WriteResponse{} + if h, ok := shandle.handle.(HandleWriter); ok { + if err := h.Write(ctx, r, s); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + } + return fuse.EIO + + case *fuse.FlushRequest: + shandle := c.getHandle(r.Handle) + if shandle == nil { + return fuse.ESTALE + } + handle := shandle.handle + + if h, ok := handle.(HandleFlusher); ok { + if err := h.Flush(ctx, r); err != nil { + return err + } + } + done(nil) + r.Respond() + return nil + + case *fuse.ReleaseRequest: + shandle := c.getHandle(r.Handle) + if shandle == nil { + return fuse.ESTALE + } + handle := shandle.handle + + // No matter what, release the handle. + c.dropHandle(r.Handle) + + if h, ok := handle.(HandleReleaser); ok { + if err := h.Release(ctx, r); err != nil { + return err + } + } + done(nil) + r.Respond() + return nil + + case *fuse.DestroyRequest: + if fs, ok := c.fs.(FSDestroyer); ok { + fs.Destroy() + } + done(nil) + r.Respond() + return nil + + case *fuse.RenameRequest: + c.meta.Lock() + var newDirNode *serveNode + if int(r.NewDir) < len(c.node) { + newDirNode = c.node[r.NewDir] + } + c.meta.Unlock() + if newDirNode == nil { + c.debug(renameNewDirNodeNotFound{ + Request: r.Hdr(), + In: r, + }) + return fuse.EIO + } + n, ok := node.(NodeRenamer) + if !ok { + return fuse.EIO // XXX or EPERM like Mkdir? + } + err := n.Rename(ctx, r, newDirNode.node) + if err != nil { + return err + } + done(nil) + r.Respond() + return nil + + case *fuse.MknodRequest: + n, ok := node.(NodeMknoder) + if !ok { + return fuse.EIO + } + n2, err := n.Mknod(ctx, r) + if err != nil { + return err + } + s := &fuse.LookupResponse{} + initLookupResponse(s) + if err := c.saveLookup(ctx, s, snode, r.Name, n2); err != nil { + return err + } + done(s) + r.Respond(s) + return nil + + case *fuse.FsyncRequest: + n, ok := node.(NodeFsyncer) + if !ok { + return fuse.EIO + } + err := n.Fsync(ctx, r) + if err != nil { + return err + } + done(nil) + r.Respond() + return nil + + case *fuse.InterruptRequest: + c.meta.Lock() + ireq := c.req[r.IntrID] + if ireq != nil && ireq.cancel != nil { + ireq.cancel() + ireq.cancel = nil + } + c.meta.Unlock() + done(nil) + r.Respond() + return nil + + /* case *FsyncdirRequest: + return ENOSYS + + case *GetlkRequest, *SetlkRequest, *SetlkwRequest: + return ENOSYS + + case *BmapRequest: + return ENOSYS + + case *SetvolnameRequest, *GetxtimesRequest, *ExchangeRequest: + return ENOSYS + */ + } + + panic("not reached") +} + +func (c *Server) saveLookup(ctx context.Context, s *fuse.LookupResponse, snode *serveNode, elem string, n2 Node) error { + if err := nodeAttr(ctx, n2, &s.Attr); err != nil { + return err + } + if s.Attr.Inode == 0 { + s.Attr.Inode = c.dynamicInode(snode.inode, elem) + } + + s.Node, s.Generation = c.saveNode(s.Attr.Inode, n2) + return nil +} + +type invalidateNodeDetail struct { + Off int64 + Size int64 +} + +func (i invalidateNodeDetail) String() string { + return fmt.Sprintf("Off:%d Size:%d", i.Off, i.Size) +} + +func errstr(err error) string { + if err == nil { + return "" + } + return err.Error() +} + +func (s *Server) invalidateNode(node Node, off int64, size int64) error { + s.meta.Lock() + id, ok := s.nodeRef[node] + if ok { + snode := s.node[id] + snode.wg.Add(1) + defer snode.wg.Done() + } + s.meta.Unlock() + if !ok { + // This is what the kernel would have said, if we had been + // able to send this message; it's not cached. + return fuse.ErrNotCached + } + // Delay logging until after we can record the error too. We + // consider a /dev/fuse write to be instantaneous enough to not + // need separate before and after messages. + err := s.conn.InvalidateNode(id, off, size) + s.debug(notification{ + Op: "InvalidateNode", + Node: id, + Out: invalidateNodeDetail{ + Off: off, + Size: size, + }, + Err: errstr(err), + }) + return err +} + +// InvalidateNodeAttr invalidates the kernel cache of the attributes +// of node. +// +// Returns fuse.ErrNotCached if the kernel is not currently caching +// the node. +func (s *Server) InvalidateNodeAttr(node Node) error { + return s.invalidateNode(node, 0, 0) +} + +// InvalidateNodeData invalidates the kernel cache of the attributes +// and data of node. +// +// Returns fuse.ErrNotCached if the kernel is not currently caching +// the node. +func (s *Server) InvalidateNodeData(node Node) error { + return s.invalidateNode(node, 0, -1) +} + +// InvalidateNodeDataRange invalidates the kernel cache of the +// attributes and a range of the data of node. +// +// Returns fuse.ErrNotCached if the kernel is not currently caching +// the node. +func (s *Server) InvalidateNodeDataRange(node Node, off int64, size int64) error { + return s.invalidateNode(node, off, size) +} + +type invalidateEntryDetail struct { + Name string +} + +func (i invalidateEntryDetail) String() string { + return fmt.Sprintf("%q", i.Name) +} + +// InvalidateEntry invalidates the kernel cache of the directory entry +// identified by parent node and entry basename. +// +// Kernel may or may not cache directory listings. To invalidate +// those, use InvalidateNode to invalidate all of the data for a +// directory. (As of 2015-06, Linux FUSE does not cache directory +// listings.) +// +// Returns ErrNotCached if the kernel is not currently caching the +// node. +func (s *Server) InvalidateEntry(parent Node, name string) error { + s.meta.Lock() + id, ok := s.nodeRef[parent] + if ok { + snode := s.node[id] + snode.wg.Add(1) + defer snode.wg.Done() + } + s.meta.Unlock() + if !ok { + // This is what the kernel would have said, if we had been + // able to send this message; it's not cached. + return fuse.ErrNotCached + } + err := s.conn.InvalidateEntry(id, name) + s.debug(notification{ + Op: "InvalidateEntry", + Node: id, + Out: invalidateEntryDetail{ + Name: name, + }, + Err: errstr(err), + }) + return err +} + +// DataHandle returns a read-only Handle that satisfies reads +// using the given data. +func DataHandle(data []byte) Handle { + return &dataHandle{data} +} + +type dataHandle struct { + data []byte +} + +func (d *dataHandle) ReadAll(ctx context.Context) ([]byte, error) { + return d.data, nil +} + +// GenerateDynamicInode returns a dynamic inode. +// +// The parent inode and current entry name are used as the criteria +// for choosing a pseudorandom inode. This makes it likely the same +// entry will get the same inode on multiple runs. +func GenerateDynamicInode(parent uint64, name string) uint64 { + h := fnv.New64a() + var buf [8]byte + binary.LittleEndian.PutUint64(buf[:], parent) + _, _ = h.Write(buf[:]) + _, _ = h.Write([]byte(name)) + var inode uint64 + for { + inode = h.Sum64() + if inode != 0 { + break + } + // there's a tiny probability that result is zero; change the + // input a little and try again + _, _ = h.Write([]byte{'x'}) + } + return inode +} diff --git a/vendor/bazil.org/fuse/fs/tree.go b/vendor/bazil.org/fuse/fs/tree.go new file mode 100644 index 0000000000..7e078045a5 --- /dev/null +++ b/vendor/bazil.org/fuse/fs/tree.go @@ -0,0 +1,99 @@ +// FUSE directory tree, for servers that wish to use it with the service loop. + +package fs + +import ( + "os" + pathpkg "path" + "strings" + + "golang.org/x/net/context" +) + +import ( + "bazil.org/fuse" +) + +// A Tree implements a basic read-only directory tree for FUSE. +// The Nodes contained in it may still be writable. +type Tree struct { + tree +} + +func (t *Tree) Root() (Node, error) { + return &t.tree, nil +} + +// Add adds the path to the tree, resolving to the given node. +// If path or a prefix of path has already been added to the tree, +// Add panics. +// +// Add is only safe to call before starting to serve requests. +func (t *Tree) Add(path string, node Node) { + path = pathpkg.Clean("/" + path)[1:] + elems := strings.Split(path, "/") + dir := Node(&t.tree) + for i, elem := range elems { + dt, ok := dir.(*tree) + if !ok { + panic("fuse: Tree.Add for " + strings.Join(elems[:i], "/") + " and " + path) + } + n := dt.lookup(elem) + if n != nil { + if i+1 == len(elems) { + panic("fuse: Tree.Add for " + path + " conflicts with " + elem) + } + dir = n + } else { + if i+1 == len(elems) { + dt.add(elem, node) + } else { + dir = &tree{} + dt.add(elem, dir) + } + } + } +} + +type treeDir struct { + name string + node Node +} + +type tree struct { + dir []treeDir +} + +func (t *tree) lookup(name string) Node { + for _, d := range t.dir { + if d.name == name { + return d.node + } + } + return nil +} + +func (t *tree) add(name string, n Node) { + t.dir = append(t.dir, treeDir{name, n}) +} + +func (t *tree) Attr(ctx context.Context, a *fuse.Attr) error { + a.Mode = os.ModeDir | 0555 + return nil +} + +func (t *tree) Lookup(ctx context.Context, name string) (Node, error) { + n := t.lookup(name) + if n != nil { + return n, nil + } + return nil, fuse.ENOENT +} + +func (t *tree) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) { + var out []fuse.Dirent + for _, d := range t.dir { + out = append(out, fuse.Dirent{Name: d.name}) + } + return out, nil +} diff --git a/vendor/bazil.org/fuse/fuse.go b/vendor/bazil.org/fuse/fuse.go new file mode 100644 index 0000000000..6db0ef2935 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse.go @@ -0,0 +1,2303 @@ +// See the file LICENSE for copyright and licensing information. + +// Adapted from Plan 9 from User Space's src/cmd/9pfuse/fuse.c, +// which carries this notice: +// +// The files in this directory are subject to the following license. +// +// The author of this software is Russ Cox. +// +// Copyright (c) 2006 Russ Cox +// +// Permission to use, copy, modify, and distribute this software for any +// purpose without fee is hereby granted, provided that this entire notice +// is included in all copies of any software which is or includes a copy +// or modification of this software and in all copies of the supporting +// documentation for such software. +// +// THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED +// WARRANTY. IN PARTICULAR, THE AUTHOR MAKES NO REPRESENTATION OR WARRANTY +// OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS +// FITNESS FOR ANY PARTICULAR PURPOSE. + +// Package fuse enables writing FUSE file systems on Linux, OS X, and FreeBSD. +// +// On OS X, it requires OSXFUSE (http://osxfuse.github.com/). +// +// There are two approaches to writing a FUSE file system. The first is to speak +// the low-level message protocol, reading from a Conn using ReadRequest and +// writing using the various Respond methods. This approach is closest to +// the actual interaction with the kernel and can be the simplest one in contexts +// such as protocol translators. +// +// Servers of synthesized file systems tend to share common +// bookkeeping abstracted away by the second approach, which is to +// call fs.Serve to serve the FUSE protocol using an implementation of +// the service methods in the interfaces FS* (file system), Node* (file +// or directory), and Handle* (opened file or directory). +// There are a daunting number of such methods that can be written, +// but few are required. +// The specific methods are described in the documentation for those interfaces. +// +// The hellofs subdirectory contains a simple illustration of the fs.Serve approach. +// +// Service Methods +// +// The required and optional methods for the FS, Node, and Handle interfaces +// have the general form +// +// Op(ctx context.Context, req *OpRequest, resp *OpResponse) error +// +// where Op is the name of a FUSE operation. Op reads request +// parameters from req and writes results to resp. An operation whose +// only result is the error result omits the resp parameter. +// +// Multiple goroutines may call service methods simultaneously; the +// methods being called are responsible for appropriate +// synchronization. +// +// The operation must not hold on to the request or response, +// including any []byte fields such as WriteRequest.Data or +// SetxattrRequest.Xattr. +// +// Errors +// +// Operations can return errors. The FUSE interface can only +// communicate POSIX errno error numbers to file system clients, the +// message is not visible to file system clients. The returned error +// can implement ErrorNumber to control the errno returned. Without +// ErrorNumber, a generic errno (EIO) is returned. +// +// Error messages will be visible in the debug log as part of the +// response. +// +// Interrupted Operations +// +// In some file systems, some operations +// may take an undetermined amount of time. For example, a Read waiting for +// a network message or a matching Write might wait indefinitely. If the request +// is cancelled and no longer needed, the context will be cancelled. +// Blocking operations should select on a receive from ctx.Done() and attempt to +// abort the operation early if the receive succeeds (meaning the channel is closed). +// To indicate that the operation failed because it was aborted, return fuse.EINTR. +// +// If an operation does not block for an indefinite amount of time, supporting +// cancellation is not necessary. +// +// Authentication +// +// All requests types embed a Header, meaning that the method can +// inspect req.Pid, req.Uid, and req.Gid as necessary to implement +// permission checking. The kernel FUSE layer normally prevents other +// users from accessing the FUSE file system (to change this, see +// AllowOther, AllowRoot), but does not enforce access modes (to +// change this, see DefaultPermissions). +// +// Mount Options +// +// Behavior and metadata of the mounted file system can be changed by +// passing MountOption values to Mount. +// +package fuse // import "bazil.org/fuse" + +import ( + "bytes" + "encoding/json" + "errors" + "fmt" + "io" + "os" + "sync" + "syscall" + "time" + "unsafe" +) + +// A Conn represents a connection to a mounted FUSE file system. +type Conn struct { + // Ready is closed when the mount is complete or has failed. + Ready <-chan struct{} + + // MountError stores any error from the mount process. Only valid + // after Ready is closed. + MountError error + + // File handle for kernel communication. Only safe to access if + // rio or wio is held. + dev *os.File + wio sync.RWMutex + rio sync.RWMutex + + // Protocol version negotiated with InitRequest/InitResponse. + proto Protocol +} + +// MountpointDoesNotExistError is an error returned when the +// mountpoint does not exist. +type MountpointDoesNotExistError struct { + Path string +} + +var _ error = (*MountpointDoesNotExistError)(nil) + +func (e *MountpointDoesNotExistError) Error() string { + return fmt.Sprintf("mountpoint does not exist: %v", e.Path) +} + +// Mount mounts a new FUSE connection on the named directory +// and returns a connection for reading and writing FUSE messages. +// +// After a successful return, caller must call Close to free +// resources. +// +// Even on successful return, the new mount is not guaranteed to be +// visible until after Conn.Ready is closed. See Conn.MountError for +// possible errors. Incoming requests on Conn must be served to make +// progress. +func Mount(dir string, options ...MountOption) (*Conn, error) { + conf := mountConfig{ + options: make(map[string]string), + } + for _, option := range options { + if err := option(&conf); err != nil { + return nil, err + } + } + + ready := make(chan struct{}, 1) + c := &Conn{ + Ready: ready, + } + f, err := mount(dir, &conf, ready, &c.MountError) + if err != nil { + return nil, err + } + c.dev = f + + if err := initMount(c, &conf); err != nil { + c.Close() + if err == ErrClosedWithoutInit { + // see if we can provide a better error + <-c.Ready + if err := c.MountError; err != nil { + return nil, err + } + } + return nil, err + } + + return c, nil +} + +type OldVersionError struct { + Kernel Protocol + LibraryMin Protocol +} + +func (e *OldVersionError) Error() string { + return fmt.Sprintf("kernel FUSE version is too old: %v < %v", e.Kernel, e.LibraryMin) +} + +var ( + ErrClosedWithoutInit = errors.New("fuse connection closed without init") +) + +func initMount(c *Conn, conf *mountConfig) error { + req, err := c.ReadRequest() + if err != nil { + if err == io.EOF { + return ErrClosedWithoutInit + } + return err + } + r, ok := req.(*InitRequest) + if !ok { + return fmt.Errorf("missing init, got: %T", req) + } + + min := Protocol{protoVersionMinMajor, protoVersionMinMinor} + if r.Kernel.LT(min) { + req.RespondError(Errno(syscall.EPROTO)) + c.Close() + return &OldVersionError{ + Kernel: r.Kernel, + LibraryMin: min, + } + } + + proto := Protocol{protoVersionMaxMajor, protoVersionMaxMinor} + if r.Kernel.LT(proto) { + // Kernel doesn't support the latest version we have. + proto = r.Kernel + } + c.proto = proto + + s := &InitResponse{ + Library: proto, + MaxReadahead: conf.maxReadahead, + MaxWrite: maxWrite, + Flags: InitBigWrites | conf.initFlags, + } + r.Respond(s) + return nil +} + +// A Request represents a single FUSE request received from the kernel. +// Use a type switch to determine the specific kind. +// A request of unrecognized type will have concrete type *Header. +type Request interface { + // Hdr returns the Header associated with this request. + Hdr() *Header + + // RespondError responds to the request with the given error. + RespondError(error) + + String() string +} + +// A RequestID identifies an active FUSE request. +type RequestID uint64 + +func (r RequestID) String() string { + return fmt.Sprintf("%#x", uint64(r)) +} + +// A NodeID is a number identifying a directory or file. +// It must be unique among IDs returned in LookupResponses +// that have not yet been forgotten by ForgetRequests. +type NodeID uint64 + +func (n NodeID) String() string { + return fmt.Sprintf("%#x", uint64(n)) +} + +// A HandleID is a number identifying an open directory or file. +// It only needs to be unique while the directory or file is open. +type HandleID uint64 + +func (h HandleID) String() string { + return fmt.Sprintf("%#x", uint64(h)) +} + +// The RootID identifies the root directory of a FUSE file system. +const RootID NodeID = rootID + +// A Header describes the basic information sent in every request. +type Header struct { + Conn *Conn `json:"-"` // connection this request was received on + ID RequestID // unique ID for request + Node NodeID // file or directory the request is about + Uid uint32 // user ID of process making request + Gid uint32 // group ID of process making request + Pid uint32 // process ID of process making request + + // for returning to reqPool + msg *message +} + +func (h *Header) String() string { + return fmt.Sprintf("ID=%v Node=%v Uid=%d Gid=%d Pid=%d", h.ID, h.Node, h.Uid, h.Gid, h.Pid) +} + +func (h *Header) Hdr() *Header { + return h +} + +func (h *Header) noResponse() { + putMessage(h.msg) +} + +func (h *Header) respond(msg []byte) { + out := (*outHeader)(unsafe.Pointer(&msg[0])) + out.Unique = uint64(h.ID) + h.Conn.respond(msg) + putMessage(h.msg) +} + +// An ErrorNumber is an error with a specific error number. +// +// Operations may return an error value that implements ErrorNumber to +// control what specific error number (errno) to return. +type ErrorNumber interface { + // Errno returns the the error number (errno) for this error. + Errno() Errno +} + +const ( + // ENOSYS indicates that the call is not supported. + ENOSYS = Errno(syscall.ENOSYS) + + // ESTALE is used by Serve to respond to violations of the FUSE protocol. + ESTALE = Errno(syscall.ESTALE) + + ENOENT = Errno(syscall.ENOENT) + EIO = Errno(syscall.EIO) + EPERM = Errno(syscall.EPERM) + + // EINTR indicates request was interrupted by an InterruptRequest. + // See also fs.Intr. + EINTR = Errno(syscall.EINTR) + + ERANGE = Errno(syscall.ERANGE) + ENOTSUP = Errno(syscall.ENOTSUP) + EEXIST = Errno(syscall.EEXIST) +) + +// DefaultErrno is the errno used when error returned does not +// implement ErrorNumber. +const DefaultErrno = EIO + +var errnoNames = map[Errno]string{ + ENOSYS: "ENOSYS", + ESTALE: "ESTALE", + ENOENT: "ENOENT", + EIO: "EIO", + EPERM: "EPERM", + EINTR: "EINTR", + EEXIST: "EEXIST", +} + +// Errno implements Error and ErrorNumber using a syscall.Errno. +type Errno syscall.Errno + +var _ = ErrorNumber(Errno(0)) +var _ = error(Errno(0)) + +func (e Errno) Errno() Errno { + return e +} + +func (e Errno) String() string { + return syscall.Errno(e).Error() +} + +func (e Errno) Error() string { + return syscall.Errno(e).Error() +} + +// ErrnoName returns the short non-numeric identifier for this errno. +// For example, "EIO". +func (e Errno) ErrnoName() string { + s := errnoNames[e] + if s == "" { + s = fmt.Sprint(e.Errno()) + } + return s +} + +func (e Errno) MarshalText() ([]byte, error) { + s := e.ErrnoName() + return []byte(s), nil +} + +func (h *Header) RespondError(err error) { + errno := DefaultErrno + if ferr, ok := err.(ErrorNumber); ok { + errno = ferr.Errno() + } + // FUSE uses negative errors! + // TODO: File bug report against OSXFUSE: positive error causes kernel panic. + buf := newBuffer(0) + hOut := (*outHeader)(unsafe.Pointer(&buf[0])) + hOut.Error = -int32(errno) + h.respond(buf) +} + +// All requests read from the kernel, without data, are shorter than +// this. +var maxRequestSize = syscall.Getpagesize() +var bufSize = maxRequestSize + maxWrite + +// reqPool is a pool of messages. +// +// Lifetime of a logical message is from getMessage to putMessage. +// getMessage is called by ReadRequest. putMessage is called by +// Conn.ReadRequest, Request.Respond, or Request.RespondError. +// +// Messages in the pool are guaranteed to have conn and off zeroed, +// buf allocated and len==bufSize, and hdr set. +var reqPool = sync.Pool{ + New: allocMessage, +} + +func allocMessage() interface{} { + m := &message{buf: make([]byte, bufSize)} + m.hdr = (*inHeader)(unsafe.Pointer(&m.buf[0])) + return m +} + +func getMessage(c *Conn) *message { + m := reqPool.Get().(*message) + m.conn = c + return m +} + +func putMessage(m *message) { + m.buf = m.buf[:bufSize] + m.conn = nil + m.off = 0 + reqPool.Put(m) +} + +// a message represents the bytes of a single FUSE message +type message struct { + conn *Conn + buf []byte // all bytes + hdr *inHeader // header + off int // offset for reading additional fields +} + +func (m *message) len() uintptr { + return uintptr(len(m.buf) - m.off) +} + +func (m *message) data() unsafe.Pointer { + var p unsafe.Pointer + if m.off < len(m.buf) { + p = unsafe.Pointer(&m.buf[m.off]) + } + return p +} + +func (m *message) bytes() []byte { + return m.buf[m.off:] +} + +func (m *message) Header() Header { + h := m.hdr + return Header{ + Conn: m.conn, + ID: RequestID(h.Unique), + Node: NodeID(h.Nodeid), + Uid: h.Uid, + Gid: h.Gid, + Pid: h.Pid, + + msg: m, + } +} + +// fileMode returns a Go os.FileMode from a Unix mode. +func fileMode(unixMode uint32) os.FileMode { + mode := os.FileMode(unixMode & 0777) + switch unixMode & syscall.S_IFMT { + case syscall.S_IFREG: + // nothing + case syscall.S_IFDIR: + mode |= os.ModeDir + case syscall.S_IFCHR: + mode |= os.ModeCharDevice | os.ModeDevice + case syscall.S_IFBLK: + mode |= os.ModeDevice + case syscall.S_IFIFO: + mode |= os.ModeNamedPipe + case syscall.S_IFLNK: + mode |= os.ModeSymlink + case syscall.S_IFSOCK: + mode |= os.ModeSocket + default: + // no idea + mode |= os.ModeDevice + } + if unixMode&syscall.S_ISUID != 0 { + mode |= os.ModeSetuid + } + if unixMode&syscall.S_ISGID != 0 { + mode |= os.ModeSetgid + } + return mode +} + +type noOpcode struct { + Opcode uint32 +} + +func (m noOpcode) String() string { + return fmt.Sprintf("No opcode %v", m.Opcode) +} + +type malformedMessage struct { +} + +func (malformedMessage) String() string { + return "malformed message" +} + +// Close closes the FUSE connection. +func (c *Conn) Close() error { + c.wio.Lock() + defer c.wio.Unlock() + c.rio.Lock() + defer c.rio.Unlock() + return c.dev.Close() +} + +// caller must hold wio or rio +func (c *Conn) fd() int { + return int(c.dev.Fd()) +} + +func (c *Conn) Protocol() Protocol { + return c.proto +} + +// ReadRequest returns the next FUSE request from the kernel. +// +// Caller must call either Request.Respond or Request.RespondError in +// a reasonable time. Caller must not retain Request after that call. +func (c *Conn) ReadRequest() (Request, error) { + m := getMessage(c) +loop: + c.rio.RLock() + n, err := syscall.Read(c.fd(), m.buf) + c.rio.RUnlock() + if err == syscall.EINTR { + // OSXFUSE sends EINTR to userspace when a request interrupt + // completed before it got sent to userspace? + goto loop + } + if err != nil && err != syscall.ENODEV { + putMessage(m) + return nil, err + } + if n <= 0 { + putMessage(m) + return nil, io.EOF + } + m.buf = m.buf[:n] + + if n < inHeaderSize { + putMessage(m) + return nil, errors.New("fuse: message too short") + } + + // FreeBSD FUSE sends a short length in the header + // for FUSE_INIT even though the actual read length is correct. + if n == inHeaderSize+initInSize && m.hdr.Opcode == opInit && m.hdr.Len < uint32(n) { + m.hdr.Len = uint32(n) + } + + // OSXFUSE sometimes sends the wrong m.hdr.Len in a FUSE_WRITE message. + if m.hdr.Len < uint32(n) && m.hdr.Len >= uint32(unsafe.Sizeof(writeIn{})) && m.hdr.Opcode == opWrite { + m.hdr.Len = uint32(n) + } + + if m.hdr.Len != uint32(n) { + // prepare error message before returning m to pool + err := fmt.Errorf("fuse: read %d opcode %d but expected %d", n, m.hdr.Opcode, m.hdr.Len) + putMessage(m) + return nil, err + } + + m.off = inHeaderSize + + // Convert to data structures. + // Do not trust kernel to hand us well-formed data. + var req Request + switch m.hdr.Opcode { + default: + Debug(noOpcode{Opcode: m.hdr.Opcode}) + goto unrecognized + + case opLookup: + buf := m.bytes() + n := len(buf) + if n == 0 || buf[n-1] != '\x00' { + goto corrupt + } + req = &LookupRequest{ + Header: m.Header(), + Name: string(buf[:n-1]), + } + + case opForget: + in := (*forgetIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &ForgetRequest{ + Header: m.Header(), + N: in.Nlookup, + } + + case opGetattr: + switch { + case c.proto.LT(Protocol{7, 9}): + req = &GetattrRequest{ + Header: m.Header(), + } + + default: + in := (*getattrIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &GetattrRequest{ + Header: m.Header(), + Flags: GetattrFlags(in.GetattrFlags), + Handle: HandleID(in.Fh), + } + } + + case opSetattr: + in := (*setattrIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &SetattrRequest{ + Header: m.Header(), + Valid: SetattrValid(in.Valid), + Handle: HandleID(in.Fh), + Size: in.Size, + Atime: time.Unix(int64(in.Atime), int64(in.AtimeNsec)), + Mtime: time.Unix(int64(in.Mtime), int64(in.MtimeNsec)), + Mode: fileMode(in.Mode), + Uid: in.Uid, + Gid: in.Gid, + Bkuptime: in.BkupTime(), + Chgtime: in.Chgtime(), + Flags: in.Flags(), + } + + case opReadlink: + if len(m.bytes()) > 0 { + goto corrupt + } + req = &ReadlinkRequest{ + Header: m.Header(), + } + + case opSymlink: + // m.bytes() is "newName\0target\0" + names := m.bytes() + if len(names) == 0 || names[len(names)-1] != 0 { + goto corrupt + } + i := bytes.IndexByte(names, '\x00') + if i < 0 { + goto corrupt + } + newName, target := names[0:i], names[i+1:len(names)-1] + req = &SymlinkRequest{ + Header: m.Header(), + NewName: string(newName), + Target: string(target), + } + + case opLink: + in := (*linkIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + newName := m.bytes()[unsafe.Sizeof(*in):] + if len(newName) < 2 || newName[len(newName)-1] != 0 { + goto corrupt + } + newName = newName[:len(newName)-1] + req = &LinkRequest{ + Header: m.Header(), + OldNode: NodeID(in.Oldnodeid), + NewName: string(newName), + } + + case opMknod: + size := mknodInSize(c.proto) + if m.len() < size { + goto corrupt + } + in := (*mknodIn)(m.data()) + name := m.bytes()[size:] + if len(name) < 2 || name[len(name)-1] != '\x00' { + goto corrupt + } + name = name[:len(name)-1] + r := &MknodRequest{ + Header: m.Header(), + Mode: fileMode(in.Mode), + Rdev: in.Rdev, + Name: string(name), + } + if c.proto.GE(Protocol{7, 12}) { + r.Umask = fileMode(in.Umask) & os.ModePerm + } + req = r + + case opMkdir: + size := mkdirInSize(c.proto) + if m.len() < size { + goto corrupt + } + in := (*mkdirIn)(m.data()) + name := m.bytes()[size:] + i := bytes.IndexByte(name, '\x00') + if i < 0 { + goto corrupt + } + r := &MkdirRequest{ + Header: m.Header(), + Name: string(name[:i]), + // observed on Linux: mkdirIn.Mode & syscall.S_IFMT == 0, + // and this causes fileMode to go into it's "no idea" + // code branch; enforce type to directory + Mode: fileMode((in.Mode &^ syscall.S_IFMT) | syscall.S_IFDIR), + } + if c.proto.GE(Protocol{7, 12}) { + r.Umask = fileMode(in.Umask) & os.ModePerm + } + req = r + + case opUnlink, opRmdir: + buf := m.bytes() + n := len(buf) + if n == 0 || buf[n-1] != '\x00' { + goto corrupt + } + req = &RemoveRequest{ + Header: m.Header(), + Name: string(buf[:n-1]), + Dir: m.hdr.Opcode == opRmdir, + } + + case opRename: + in := (*renameIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + newDirNodeID := NodeID(in.Newdir) + oldNew := m.bytes()[unsafe.Sizeof(*in):] + // oldNew should be "old\x00new\x00" + if len(oldNew) < 4 { + goto corrupt + } + if oldNew[len(oldNew)-1] != '\x00' { + goto corrupt + } + i := bytes.IndexByte(oldNew, '\x00') + if i < 0 { + goto corrupt + } + oldName, newName := string(oldNew[:i]), string(oldNew[i+1:len(oldNew)-1]) + req = &RenameRequest{ + Header: m.Header(), + NewDir: newDirNodeID, + OldName: oldName, + NewName: newName, + } + + case opOpendir, opOpen: + in := (*openIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &OpenRequest{ + Header: m.Header(), + Dir: m.hdr.Opcode == opOpendir, + Flags: openFlags(in.Flags), + } + + case opRead, opReaddir: + in := (*readIn)(m.data()) + if m.len() < readInSize(c.proto) { + goto corrupt + } + r := &ReadRequest{ + Header: m.Header(), + Dir: m.hdr.Opcode == opReaddir, + Handle: HandleID(in.Fh), + Offset: int64(in.Offset), + Size: int(in.Size), + } + if c.proto.GE(Protocol{7, 9}) { + r.Flags = ReadFlags(in.ReadFlags) + r.LockOwner = in.LockOwner + r.FileFlags = openFlags(in.Flags) + } + req = r + + case opWrite: + in := (*writeIn)(m.data()) + if m.len() < writeInSize(c.proto) { + goto corrupt + } + r := &WriteRequest{ + Header: m.Header(), + Handle: HandleID(in.Fh), + Offset: int64(in.Offset), + Flags: WriteFlags(in.WriteFlags), + } + if c.proto.GE(Protocol{7, 9}) { + r.LockOwner = in.LockOwner + r.FileFlags = openFlags(in.Flags) + } + buf := m.bytes()[writeInSize(c.proto):] + if uint32(len(buf)) < in.Size { + goto corrupt + } + r.Data = buf + req = r + + case opStatfs: + req = &StatfsRequest{ + Header: m.Header(), + } + + case opRelease, opReleasedir: + in := (*releaseIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &ReleaseRequest{ + Header: m.Header(), + Dir: m.hdr.Opcode == opReleasedir, + Handle: HandleID(in.Fh), + Flags: openFlags(in.Flags), + ReleaseFlags: ReleaseFlags(in.ReleaseFlags), + LockOwner: in.LockOwner, + } + + case opFsync, opFsyncdir: + in := (*fsyncIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &FsyncRequest{ + Dir: m.hdr.Opcode == opFsyncdir, + Header: m.Header(), + Handle: HandleID(in.Fh), + Flags: in.FsyncFlags, + } + + case opSetxattr: + in := (*setxattrIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + m.off += int(unsafe.Sizeof(*in)) + name := m.bytes() + i := bytes.IndexByte(name, '\x00') + if i < 0 { + goto corrupt + } + xattr := name[i+1:] + if uint32(len(xattr)) < in.Size { + goto corrupt + } + xattr = xattr[:in.Size] + req = &SetxattrRequest{ + Header: m.Header(), + Flags: in.Flags, + Position: in.position(), + Name: string(name[:i]), + Xattr: xattr, + } + + case opGetxattr: + in := (*getxattrIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + name := m.bytes()[unsafe.Sizeof(*in):] + i := bytes.IndexByte(name, '\x00') + if i < 0 { + goto corrupt + } + req = &GetxattrRequest{ + Header: m.Header(), + Name: string(name[:i]), + Size: in.Size, + Position: in.position(), + } + + case opListxattr: + in := (*getxattrIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &ListxattrRequest{ + Header: m.Header(), + Size: in.Size, + Position: in.position(), + } + + case opRemovexattr: + buf := m.bytes() + n := len(buf) + if n == 0 || buf[n-1] != '\x00' { + goto corrupt + } + req = &RemovexattrRequest{ + Header: m.Header(), + Name: string(buf[:n-1]), + } + + case opFlush: + in := (*flushIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &FlushRequest{ + Header: m.Header(), + Handle: HandleID(in.Fh), + Flags: in.FlushFlags, + LockOwner: in.LockOwner, + } + + case opInit: + in := (*initIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &InitRequest{ + Header: m.Header(), + Kernel: Protocol{in.Major, in.Minor}, + MaxReadahead: in.MaxReadahead, + Flags: InitFlags(in.Flags), + } + + case opGetlk: + panic("opGetlk") + case opSetlk: + panic("opSetlk") + case opSetlkw: + panic("opSetlkw") + + case opAccess: + in := (*accessIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &AccessRequest{ + Header: m.Header(), + Mask: in.Mask, + } + + case opCreate: + size := createInSize(c.proto) + if m.len() < size { + goto corrupt + } + in := (*createIn)(m.data()) + name := m.bytes()[size:] + i := bytes.IndexByte(name, '\x00') + if i < 0 { + goto corrupt + } + r := &CreateRequest{ + Header: m.Header(), + Flags: openFlags(in.Flags), + Mode: fileMode(in.Mode), + Name: string(name[:i]), + } + if c.proto.GE(Protocol{7, 12}) { + r.Umask = fileMode(in.Umask) & os.ModePerm + } + req = r + + case opInterrupt: + in := (*interruptIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + req = &InterruptRequest{ + Header: m.Header(), + IntrID: RequestID(in.Unique), + } + + case opBmap: + panic("opBmap") + + case opDestroy: + req = &DestroyRequest{ + Header: m.Header(), + } + + // OS X + case opSetvolname: + panic("opSetvolname") + case opGetxtimes: + panic("opGetxtimes") + case opExchange: + in := (*exchangeIn)(m.data()) + if m.len() < unsafe.Sizeof(*in) { + goto corrupt + } + oldDirNodeID := NodeID(in.Olddir) + newDirNodeID := NodeID(in.Newdir) + oldNew := m.bytes()[unsafe.Sizeof(*in):] + // oldNew should be "oldname\x00newname\x00" + if len(oldNew) < 4 { + goto corrupt + } + if oldNew[len(oldNew)-1] != '\x00' { + goto corrupt + } + i := bytes.IndexByte(oldNew, '\x00') + if i < 0 { + goto corrupt + } + oldName, newName := string(oldNew[:i]), string(oldNew[i+1:len(oldNew)-1]) + req = &ExchangeDataRequest{ + Header: m.Header(), + OldDir: oldDirNodeID, + NewDir: newDirNodeID, + OldName: oldName, + NewName: newName, + // TODO options + } + } + + return req, nil + +corrupt: + Debug(malformedMessage{}) + putMessage(m) + return nil, fmt.Errorf("fuse: malformed message") + +unrecognized: + // Unrecognized message. + // Assume higher-level code will send a "no idea what you mean" error. + h := m.Header() + return &h, nil +} + +type bugShortKernelWrite struct { + Written int64 + Length int64 + Error string + Stack string +} + +func (b bugShortKernelWrite) String() string { + return fmt.Sprintf("short kernel write: written=%d/%d error=%q stack=\n%s", b.Written, b.Length, b.Error, b.Stack) +} + +type bugKernelWriteError struct { + Error string + Stack string +} + +func (b bugKernelWriteError) String() string { + return fmt.Sprintf("kernel write error: error=%q stack=\n%s", b.Error, b.Stack) +} + +// safe to call even with nil error +func errorString(err error) string { + if err == nil { + return "" + } + return err.Error() +} + +func (c *Conn) writeToKernel(msg []byte) error { + out := (*outHeader)(unsafe.Pointer(&msg[0])) + out.Len = uint32(len(msg)) + + c.wio.RLock() + defer c.wio.RUnlock() + nn, err := syscall.Write(c.fd(), msg) + if err == nil && nn != len(msg) { + Debug(bugShortKernelWrite{ + Written: int64(nn), + Length: int64(len(msg)), + Error: errorString(err), + Stack: stack(), + }) + } + return err +} + +func (c *Conn) respond(msg []byte) { + if err := c.writeToKernel(msg); err != nil { + Debug(bugKernelWriteError{ + Error: errorString(err), + Stack: stack(), + }) + } +} + +type notCachedError struct{} + +func (notCachedError) Error() string { + return "node not cached" +} + +var _ ErrorNumber = notCachedError{} + +func (notCachedError) Errno() Errno { + // Behave just like if the original syscall.ENOENT had been passed + // straight through. + return ENOENT +} + +var ( + ErrNotCached = notCachedError{} +) + +// sendInvalidate sends an invalidate notification to kernel. +// +// A returned ENOENT is translated to a friendlier error. +func (c *Conn) sendInvalidate(msg []byte) error { + switch err := c.writeToKernel(msg); err { + case syscall.ENOENT: + return ErrNotCached + default: + return err + } +} + +// InvalidateNode invalidates the kernel cache of the attributes and a +// range of the data of a node. +// +// Giving offset 0 and size -1 means all data. To invalidate just the +// attributes, give offset 0 and size 0. +// +// Returns ErrNotCached if the kernel is not currently caching the +// node. +func (c *Conn) InvalidateNode(nodeID NodeID, off int64, size int64) error { + buf := newBuffer(unsafe.Sizeof(notifyInvalInodeOut{})) + h := (*outHeader)(unsafe.Pointer(&buf[0])) + // h.Unique is 0 + h.Error = notifyCodeInvalInode + out := (*notifyInvalInodeOut)(buf.alloc(unsafe.Sizeof(notifyInvalInodeOut{}))) + out.Ino = uint64(nodeID) + out.Off = off + out.Len = size + return c.sendInvalidate(buf) +} + +// InvalidateEntry invalidates the kernel cache of the directory entry +// identified by parent directory node ID and entry basename. +// +// Kernel may or may not cache directory listings. To invalidate +// those, use InvalidateNode to invalidate all of the data for a +// directory. (As of 2015-06, Linux FUSE does not cache directory +// listings.) +// +// Returns ErrNotCached if the kernel is not currently caching the +// node. +func (c *Conn) InvalidateEntry(parent NodeID, name string) error { + const maxUint32 = ^uint32(0) + if uint64(len(name)) > uint64(maxUint32) { + // very unlikely, but we don't want to silently truncate + return syscall.ENAMETOOLONG + } + buf := newBuffer(unsafe.Sizeof(notifyInvalEntryOut{}) + uintptr(len(name)) + 1) + h := (*outHeader)(unsafe.Pointer(&buf[0])) + // h.Unique is 0 + h.Error = notifyCodeInvalEntry + out := (*notifyInvalEntryOut)(buf.alloc(unsafe.Sizeof(notifyInvalEntryOut{}))) + out.Parent = uint64(parent) + out.Namelen = uint32(len(name)) + buf = append(buf, name...) + buf = append(buf, '\x00') + return c.sendInvalidate(buf) +} + +// An InitRequest is the first request sent on a FUSE file system. +type InitRequest struct { + Header `json:"-"` + Kernel Protocol + // Maximum readahead in bytes that the kernel plans to use. + MaxReadahead uint32 + Flags InitFlags +} + +var _ = Request(&InitRequest{}) + +func (r *InitRequest) String() string { + return fmt.Sprintf("Init [%v] %v ra=%d fl=%v", &r.Header, r.Kernel, r.MaxReadahead, r.Flags) +} + +// An InitResponse is the response to an InitRequest. +type InitResponse struct { + Library Protocol + // Maximum readahead in bytes that the kernel can use. Ignored if + // greater than InitRequest.MaxReadahead. + MaxReadahead uint32 + Flags InitFlags + // Maximum size of a single write operation. + // Linux enforces a minimum of 4 KiB. + MaxWrite uint32 +} + +func (r *InitResponse) String() string { + return fmt.Sprintf("Init %v ra=%d fl=%v w=%d", r.Library, r.MaxReadahead, r.Flags, r.MaxWrite) +} + +// Respond replies to the request with the given response. +func (r *InitRequest) Respond(resp *InitResponse) { + buf := newBuffer(unsafe.Sizeof(initOut{})) + out := (*initOut)(buf.alloc(unsafe.Sizeof(initOut{}))) + out.Major = resp.Library.Major + out.Minor = resp.Library.Minor + out.MaxReadahead = resp.MaxReadahead + out.Flags = uint32(resp.Flags) + out.MaxWrite = resp.MaxWrite + + // MaxWrite larger than our receive buffer would just lead to + // errors on large writes. + if out.MaxWrite > maxWrite { + out.MaxWrite = maxWrite + } + r.respond(buf) +} + +// A StatfsRequest requests information about the mounted file system. +type StatfsRequest struct { + Header `json:"-"` +} + +var _ = Request(&StatfsRequest{}) + +func (r *StatfsRequest) String() string { + return fmt.Sprintf("Statfs [%s]", &r.Header) +} + +// Respond replies to the request with the given response. +func (r *StatfsRequest) Respond(resp *StatfsResponse) { + buf := newBuffer(unsafe.Sizeof(statfsOut{})) + out := (*statfsOut)(buf.alloc(unsafe.Sizeof(statfsOut{}))) + out.St = kstatfs{ + Blocks: resp.Blocks, + Bfree: resp.Bfree, + Bavail: resp.Bavail, + Files: resp.Files, + Bsize: resp.Bsize, + Namelen: resp.Namelen, + Frsize: resp.Frsize, + } + r.respond(buf) +} + +// A StatfsResponse is the response to a StatfsRequest. +type StatfsResponse struct { + Blocks uint64 // Total data blocks in file system. + Bfree uint64 // Free blocks in file system. + Bavail uint64 // Free blocks in file system if you're not root. + Files uint64 // Total files in file system. + Ffree uint64 // Free files in file system. + Bsize uint32 // Block size + Namelen uint32 // Maximum file name length? + Frsize uint32 // Fragment size, smallest addressable data size in the file system. +} + +func (r *StatfsResponse) String() string { + return fmt.Sprintf("Statfs blocks=%d/%d/%d files=%d/%d bsize=%d frsize=%d namelen=%d", + r.Bavail, r.Bfree, r.Blocks, + r.Ffree, r.Files, + r.Bsize, + r.Frsize, + r.Namelen, + ) +} + +// An AccessRequest asks whether the file can be accessed +// for the purpose specified by the mask. +type AccessRequest struct { + Header `json:"-"` + Mask uint32 +} + +var _ = Request(&AccessRequest{}) + +func (r *AccessRequest) String() string { + return fmt.Sprintf("Access [%s] mask=%#x", &r.Header, r.Mask) +} + +// Respond replies to the request indicating that access is allowed. +// To deny access, use RespondError. +func (r *AccessRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// An Attr is the metadata for a single file or directory. +type Attr struct { + Valid time.Duration // how long Attr can be cached + + Inode uint64 // inode number + Size uint64 // size in bytes + Blocks uint64 // size in 512-byte units + Atime time.Time // time of last access + Mtime time.Time // time of last modification + Ctime time.Time // time of last inode change + Crtime time.Time // time of creation (OS X only) + Mode os.FileMode // file mode + Nlink uint32 // number of links (usually 1) + Uid uint32 // owner uid + Gid uint32 // group gid + Rdev uint32 // device numbers + Flags uint32 // chflags(2) flags (OS X only) + BlockSize uint32 // preferred blocksize for filesystem I/O +} + +func (a Attr) String() string { + return fmt.Sprintf("valid=%v ino=%v size=%d mode=%v", a.Valid, a.Inode, a.Size, a.Mode) +} + +func unix(t time.Time) (sec uint64, nsec uint32) { + nano := t.UnixNano() + sec = uint64(nano / 1e9) + nsec = uint32(nano % 1e9) + return +} + +func (a *Attr) attr(out *attr, proto Protocol) { + out.Ino = a.Inode + out.Size = a.Size + out.Blocks = a.Blocks + out.Atime, out.AtimeNsec = unix(a.Atime) + out.Mtime, out.MtimeNsec = unix(a.Mtime) + out.Ctime, out.CtimeNsec = unix(a.Ctime) + out.SetCrtime(unix(a.Crtime)) + out.Mode = uint32(a.Mode) & 0777 + switch { + default: + out.Mode |= syscall.S_IFREG + case a.Mode&os.ModeDir != 0: + out.Mode |= syscall.S_IFDIR + case a.Mode&os.ModeDevice != 0: + if a.Mode&os.ModeCharDevice != 0 { + out.Mode |= syscall.S_IFCHR + } else { + out.Mode |= syscall.S_IFBLK + } + case a.Mode&os.ModeNamedPipe != 0: + out.Mode |= syscall.S_IFIFO + case a.Mode&os.ModeSymlink != 0: + out.Mode |= syscall.S_IFLNK + case a.Mode&os.ModeSocket != 0: + out.Mode |= syscall.S_IFSOCK + } + if a.Mode&os.ModeSetuid != 0 { + out.Mode |= syscall.S_ISUID + } + if a.Mode&os.ModeSetgid != 0 { + out.Mode |= syscall.S_ISGID + } + out.Nlink = a.Nlink + out.Uid = a.Uid + out.Gid = a.Gid + out.Rdev = a.Rdev + out.SetFlags(a.Flags) + if proto.GE(Protocol{7, 9}) { + out.Blksize = a.BlockSize + } + + return +} + +// A GetattrRequest asks for the metadata for the file denoted by r.Node. +type GetattrRequest struct { + Header `json:"-"` + Flags GetattrFlags + Handle HandleID +} + +var _ = Request(&GetattrRequest{}) + +func (r *GetattrRequest) String() string { + return fmt.Sprintf("Getattr [%s] %v fl=%v", &r.Header, r.Handle, r.Flags) +} + +// Respond replies to the request with the given response. +func (r *GetattrRequest) Respond(resp *GetattrResponse) { + size := attrOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*attrOut)(buf.alloc(size)) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +// A GetattrResponse is the response to a GetattrRequest. +type GetattrResponse struct { + Attr Attr // file attributes +} + +func (r *GetattrResponse) String() string { + return fmt.Sprintf("Getattr %v", r.Attr) +} + +// A GetxattrRequest asks for the extended attributes associated with r.Node. +type GetxattrRequest struct { + Header `json:"-"` + + // Maximum size to return. + Size uint32 + + // Name of the attribute requested. + Name string + + // Offset within extended attributes. + // + // Only valid for OS X, and then only with the resource fork + // attribute. + Position uint32 +} + +var _ = Request(&GetxattrRequest{}) + +func (r *GetxattrRequest) String() string { + return fmt.Sprintf("Getxattr [%s] %q %d @%d", &r.Header, r.Name, r.Size, r.Position) +} + +// Respond replies to the request with the given response. +func (r *GetxattrRequest) Respond(resp *GetxattrResponse) { + if r.Size == 0 { + buf := newBuffer(unsafe.Sizeof(getxattrOut{})) + out := (*getxattrOut)(buf.alloc(unsafe.Sizeof(getxattrOut{}))) + out.Size = uint32(len(resp.Xattr)) + r.respond(buf) + } else { + buf := newBuffer(uintptr(len(resp.Xattr))) + buf = append(buf, resp.Xattr...) + r.respond(buf) + } +} + +// A GetxattrResponse is the response to a GetxattrRequest. +type GetxattrResponse struct { + Xattr []byte +} + +func (r *GetxattrResponse) String() string { + return fmt.Sprintf("Getxattr %x", r.Xattr) +} + +// A ListxattrRequest asks to list the extended attributes associated with r.Node. +type ListxattrRequest struct { + Header `json:"-"` + Size uint32 // maximum size to return + Position uint32 // offset within attribute list +} + +var _ = Request(&ListxattrRequest{}) + +func (r *ListxattrRequest) String() string { + return fmt.Sprintf("Listxattr [%s] %d @%d", &r.Header, r.Size, r.Position) +} + +// Respond replies to the request with the given response. +func (r *ListxattrRequest) Respond(resp *ListxattrResponse) { + if r.Size == 0 { + buf := newBuffer(unsafe.Sizeof(getxattrOut{})) + out := (*getxattrOut)(buf.alloc(unsafe.Sizeof(getxattrOut{}))) + out.Size = uint32(len(resp.Xattr)) + r.respond(buf) + } else { + buf := newBuffer(uintptr(len(resp.Xattr))) + buf = append(buf, resp.Xattr...) + r.respond(buf) + } +} + +// A ListxattrResponse is the response to a ListxattrRequest. +type ListxattrResponse struct { + Xattr []byte +} + +func (r *ListxattrResponse) String() string { + return fmt.Sprintf("Listxattr %x", r.Xattr) +} + +// Append adds an extended attribute name to the response. +func (r *ListxattrResponse) Append(names ...string) { + for _, name := range names { + r.Xattr = append(r.Xattr, name...) + r.Xattr = append(r.Xattr, '\x00') + } +} + +// A RemovexattrRequest asks to remove an extended attribute associated with r.Node. +type RemovexattrRequest struct { + Header `json:"-"` + Name string // name of extended attribute +} + +var _ = Request(&RemovexattrRequest{}) + +func (r *RemovexattrRequest) String() string { + return fmt.Sprintf("Removexattr [%s] %q", &r.Header, r.Name) +} + +// Respond replies to the request, indicating that the attribute was removed. +func (r *RemovexattrRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// A SetxattrRequest asks to set an extended attribute associated with a file. +type SetxattrRequest struct { + Header `json:"-"` + + // Flags can make the request fail if attribute does/not already + // exist. Unfortunately, the constants are platform-specific and + // not exposed by Go1.2. Look for XATTR_CREATE, XATTR_REPLACE. + // + // TODO improve this later + // + // TODO XATTR_CREATE and exist -> EEXIST + // + // TODO XATTR_REPLACE and not exist -> ENODATA + Flags uint32 + + // Offset within extended attributes. + // + // Only valid for OS X, and then only with the resource fork + // attribute. + Position uint32 + + Name string + Xattr []byte +} + +var _ = Request(&SetxattrRequest{}) + +func trunc(b []byte, max int) ([]byte, string) { + if len(b) > max { + return b[:max], "..." + } + return b, "" +} + +func (r *SetxattrRequest) String() string { + xattr, tail := trunc(r.Xattr, 16) + return fmt.Sprintf("Setxattr [%s] %q %x%s fl=%v @%#x", &r.Header, r.Name, xattr, tail, r.Flags, r.Position) +} + +// Respond replies to the request, indicating that the extended attribute was set. +func (r *SetxattrRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// A LookupRequest asks to look up the given name in the directory named by r.Node. +type LookupRequest struct { + Header `json:"-"` + Name string +} + +var _ = Request(&LookupRequest{}) + +func (r *LookupRequest) String() string { + return fmt.Sprintf("Lookup [%s] %q", &r.Header, r.Name) +} + +// Respond replies to the request with the given response. +func (r *LookupRequest) Respond(resp *LookupResponse) { + size := entryOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*entryOut)(buf.alloc(size)) + out.Nodeid = uint64(resp.Node) + out.Generation = resp.Generation + out.EntryValid = uint64(resp.EntryValid / time.Second) + out.EntryValidNsec = uint32(resp.EntryValid % time.Second / time.Nanosecond) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +// A LookupResponse is the response to a LookupRequest. +type LookupResponse struct { + Node NodeID + Generation uint64 + EntryValid time.Duration + Attr Attr +} + +func (r *LookupResponse) string() string { + return fmt.Sprintf("%v gen=%d valid=%v attr={%v}", r.Node, r.Generation, r.EntryValid, r.Attr) +} + +func (r *LookupResponse) String() string { + return fmt.Sprintf("Lookup %s", r.string()) +} + +// An OpenRequest asks to open a file or directory +type OpenRequest struct { + Header `json:"-"` + Dir bool // is this Opendir? + Flags OpenFlags +} + +var _ = Request(&OpenRequest{}) + +func (r *OpenRequest) String() string { + return fmt.Sprintf("Open [%s] dir=%v fl=%v", &r.Header, r.Dir, r.Flags) +} + +// Respond replies to the request with the given response. +func (r *OpenRequest) Respond(resp *OpenResponse) { + buf := newBuffer(unsafe.Sizeof(openOut{})) + out := (*openOut)(buf.alloc(unsafe.Sizeof(openOut{}))) + out.Fh = uint64(resp.Handle) + out.OpenFlags = uint32(resp.Flags) + r.respond(buf) +} + +// A OpenResponse is the response to a OpenRequest. +type OpenResponse struct { + Handle HandleID + Flags OpenResponseFlags +} + +func (r *OpenResponse) string() string { + return fmt.Sprintf("%v fl=%v", r.Handle, r.Flags) +} + +func (r *OpenResponse) String() string { + return fmt.Sprintf("Open %s", r.string()) +} + +// A CreateRequest asks to create and open a file (not a directory). +type CreateRequest struct { + Header `json:"-"` + Name string + Flags OpenFlags + Mode os.FileMode + // Umask of the request. Not supported on OS X. + Umask os.FileMode +} + +var _ = Request(&CreateRequest{}) + +func (r *CreateRequest) String() string { + return fmt.Sprintf("Create [%s] %q fl=%v mode=%v umask=%v", &r.Header, r.Name, r.Flags, r.Mode, r.Umask) +} + +// Respond replies to the request with the given response. +func (r *CreateRequest) Respond(resp *CreateResponse) { + eSize := entryOutSize(r.Header.Conn.proto) + buf := newBuffer(eSize + unsafe.Sizeof(openOut{})) + + e := (*entryOut)(buf.alloc(eSize)) + e.Nodeid = uint64(resp.Node) + e.Generation = resp.Generation + e.EntryValid = uint64(resp.EntryValid / time.Second) + e.EntryValidNsec = uint32(resp.EntryValid % time.Second / time.Nanosecond) + e.AttrValid = uint64(resp.Attr.Valid / time.Second) + e.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&e.Attr, r.Header.Conn.proto) + + o := (*openOut)(buf.alloc(unsafe.Sizeof(openOut{}))) + o.Fh = uint64(resp.Handle) + o.OpenFlags = uint32(resp.Flags) + + r.respond(buf) +} + +// A CreateResponse is the response to a CreateRequest. +// It describes the created node and opened handle. +type CreateResponse struct { + LookupResponse + OpenResponse +} + +func (r *CreateResponse) String() string { + return fmt.Sprintf("Create {%s} {%s}", r.LookupResponse.string(), r.OpenResponse.string()) +} + +// A MkdirRequest asks to create (but not open) a directory. +type MkdirRequest struct { + Header `json:"-"` + Name string + Mode os.FileMode + // Umask of the request. Not supported on OS X. + Umask os.FileMode +} + +var _ = Request(&MkdirRequest{}) + +func (r *MkdirRequest) String() string { + return fmt.Sprintf("Mkdir [%s] %q mode=%v umask=%v", &r.Header, r.Name, r.Mode, r.Umask) +} + +// Respond replies to the request with the given response. +func (r *MkdirRequest) Respond(resp *MkdirResponse) { + size := entryOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*entryOut)(buf.alloc(size)) + out.Nodeid = uint64(resp.Node) + out.Generation = resp.Generation + out.EntryValid = uint64(resp.EntryValid / time.Second) + out.EntryValidNsec = uint32(resp.EntryValid % time.Second / time.Nanosecond) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +// A MkdirResponse is the response to a MkdirRequest. +type MkdirResponse struct { + LookupResponse +} + +func (r *MkdirResponse) String() string { + return fmt.Sprintf("Mkdir %v", r.LookupResponse.string()) +} + +// A ReadRequest asks to read from an open file. +type ReadRequest struct { + Header `json:"-"` + Dir bool // is this Readdir? + Handle HandleID + Offset int64 + Size int + Flags ReadFlags + LockOwner uint64 + FileFlags OpenFlags +} + +var _ = Request(&ReadRequest{}) + +func (r *ReadRequest) String() string { + return fmt.Sprintf("Read [%s] %v %d @%#x dir=%v fl=%v lock=%d ffl=%v", &r.Header, r.Handle, r.Size, r.Offset, r.Dir, r.Flags, r.LockOwner, r.FileFlags) +} + +// Respond replies to the request with the given response. +func (r *ReadRequest) Respond(resp *ReadResponse) { + buf := newBuffer(uintptr(len(resp.Data))) + buf = append(buf, resp.Data...) + r.respond(buf) +} + +// A ReadResponse is the response to a ReadRequest. +type ReadResponse struct { + Data []byte +} + +func (r *ReadResponse) String() string { + return fmt.Sprintf("Read %d", len(r.Data)) +} + +type jsonReadResponse struct { + Len uint64 +} + +func (r *ReadResponse) MarshalJSON() ([]byte, error) { + j := jsonReadResponse{ + Len: uint64(len(r.Data)), + } + return json.Marshal(j) +} + +// A ReleaseRequest asks to release (close) an open file handle. +type ReleaseRequest struct { + Header `json:"-"` + Dir bool // is this Releasedir? + Handle HandleID + Flags OpenFlags // flags from OpenRequest + ReleaseFlags ReleaseFlags + LockOwner uint32 +} + +var _ = Request(&ReleaseRequest{}) + +func (r *ReleaseRequest) String() string { + return fmt.Sprintf("Release [%s] %v fl=%v rfl=%v owner=%#x", &r.Header, r.Handle, r.Flags, r.ReleaseFlags, r.LockOwner) +} + +// Respond replies to the request, indicating that the handle has been released. +func (r *ReleaseRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// A DestroyRequest is sent by the kernel when unmounting the file system. +// No more requests will be received after this one, but it should still be +// responded to. +type DestroyRequest struct { + Header `json:"-"` +} + +var _ = Request(&DestroyRequest{}) + +func (r *DestroyRequest) String() string { + return fmt.Sprintf("Destroy [%s]", &r.Header) +} + +// Respond replies to the request. +func (r *DestroyRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// A ForgetRequest is sent by the kernel when forgetting about r.Node +// as returned by r.N lookup requests. +type ForgetRequest struct { + Header `json:"-"` + N uint64 +} + +var _ = Request(&ForgetRequest{}) + +func (r *ForgetRequest) String() string { + return fmt.Sprintf("Forget [%s] %d", &r.Header, r.N) +} + +// Respond replies to the request, indicating that the forgetfulness has been recorded. +func (r *ForgetRequest) Respond() { + // Don't reply to forget messages. + r.noResponse() +} + +// A Dirent represents a single directory entry. +type Dirent struct { + // Inode this entry names. + Inode uint64 + + // Type of the entry, for example DT_File. + // + // Setting this is optional. The zero value (DT_Unknown) means + // callers will just need to do a Getattr when the type is + // needed. Providing a type can speed up operations + // significantly. + Type DirentType + + // Name of the entry + Name string +} + +// Type of an entry in a directory listing. +type DirentType uint32 + +const ( + // These don't quite match os.FileMode; especially there's an + // explicit unknown, instead of zero value meaning file. They + // are also not quite syscall.DT_*; nothing says the FUSE + // protocol follows those, and even if they were, we don't + // want each fs to fiddle with syscall. + + // The shift by 12 is hardcoded in the FUSE userspace + // low-level C library, so it's safe here. + + DT_Unknown DirentType = 0 + DT_Socket DirentType = syscall.S_IFSOCK >> 12 + DT_Link DirentType = syscall.S_IFLNK >> 12 + DT_File DirentType = syscall.S_IFREG >> 12 + DT_Block DirentType = syscall.S_IFBLK >> 12 + DT_Dir DirentType = syscall.S_IFDIR >> 12 + DT_Char DirentType = syscall.S_IFCHR >> 12 + DT_FIFO DirentType = syscall.S_IFIFO >> 12 +) + +func (t DirentType) String() string { + switch t { + case DT_Unknown: + return "unknown" + case DT_Socket: + return "socket" + case DT_Link: + return "link" + case DT_File: + return "file" + case DT_Block: + return "block" + case DT_Dir: + return "dir" + case DT_Char: + return "char" + case DT_FIFO: + return "fifo" + } + return "invalid" +} + +// AppendDirent appends the encoded form of a directory entry to data +// and returns the resulting slice. +func AppendDirent(data []byte, dir Dirent) []byte { + de := dirent{ + Ino: dir.Inode, + Namelen: uint32(len(dir.Name)), + Type: uint32(dir.Type), + } + de.Off = uint64(len(data) + direntSize + (len(dir.Name)+7)&^7) + data = append(data, (*[direntSize]byte)(unsafe.Pointer(&de))[:]...) + data = append(data, dir.Name...) + n := direntSize + uintptr(len(dir.Name)) + if n%8 != 0 { + var pad [8]byte + data = append(data, pad[:8-n%8]...) + } + return data +} + +// A WriteRequest asks to write to an open file. +type WriteRequest struct { + Header + Handle HandleID + Offset int64 + Data []byte + Flags WriteFlags + LockOwner uint64 + FileFlags OpenFlags +} + +var _ = Request(&WriteRequest{}) + +func (r *WriteRequest) String() string { + return fmt.Sprintf("Write [%s] %v %d @%d fl=%v lock=%d ffl=%v", &r.Header, r.Handle, len(r.Data), r.Offset, r.Flags, r.LockOwner, r.FileFlags) +} + +type jsonWriteRequest struct { + Handle HandleID + Offset int64 + Len uint64 + Flags WriteFlags +} + +func (r *WriteRequest) MarshalJSON() ([]byte, error) { + j := jsonWriteRequest{ + Handle: r.Handle, + Offset: r.Offset, + Len: uint64(len(r.Data)), + Flags: r.Flags, + } + return json.Marshal(j) +} + +// Respond replies to the request with the given response. +func (r *WriteRequest) Respond(resp *WriteResponse) { + buf := newBuffer(unsafe.Sizeof(writeOut{})) + out := (*writeOut)(buf.alloc(unsafe.Sizeof(writeOut{}))) + out.Size = uint32(resp.Size) + r.respond(buf) +} + +// A WriteResponse replies to a write indicating how many bytes were written. +type WriteResponse struct { + Size int +} + +func (r *WriteResponse) String() string { + return fmt.Sprintf("Write %d", r.Size) +} + +// A SetattrRequest asks to change one or more attributes associated with a file, +// as indicated by Valid. +type SetattrRequest struct { + Header `json:"-"` + Valid SetattrValid + Handle HandleID + Size uint64 + Atime time.Time + Mtime time.Time + Mode os.FileMode + Uid uint32 + Gid uint32 + + // OS X only + Bkuptime time.Time + Chgtime time.Time + Crtime time.Time + Flags uint32 // see chflags(2) +} + +var _ = Request(&SetattrRequest{}) + +func (r *SetattrRequest) String() string { + var buf bytes.Buffer + fmt.Fprintf(&buf, "Setattr [%s]", &r.Header) + if r.Valid.Mode() { + fmt.Fprintf(&buf, " mode=%v", r.Mode) + } + if r.Valid.Uid() { + fmt.Fprintf(&buf, " uid=%d", r.Uid) + } + if r.Valid.Gid() { + fmt.Fprintf(&buf, " gid=%d", r.Gid) + } + if r.Valid.Size() { + fmt.Fprintf(&buf, " size=%d", r.Size) + } + if r.Valid.Atime() { + fmt.Fprintf(&buf, " atime=%v", r.Atime) + } + if r.Valid.AtimeNow() { + fmt.Fprintf(&buf, " atime=now") + } + if r.Valid.Mtime() { + fmt.Fprintf(&buf, " mtime=%v", r.Mtime) + } + if r.Valid.MtimeNow() { + fmt.Fprintf(&buf, " mtime=now") + } + if r.Valid.Handle() { + fmt.Fprintf(&buf, " handle=%v", r.Handle) + } else { + fmt.Fprintf(&buf, " handle=INVALID-%v", r.Handle) + } + if r.Valid.LockOwner() { + fmt.Fprintf(&buf, " lockowner") + } + if r.Valid.Crtime() { + fmt.Fprintf(&buf, " crtime=%v", r.Crtime) + } + if r.Valid.Chgtime() { + fmt.Fprintf(&buf, " chgtime=%v", r.Chgtime) + } + if r.Valid.Bkuptime() { + fmt.Fprintf(&buf, " bkuptime=%v", r.Bkuptime) + } + if r.Valid.Flags() { + fmt.Fprintf(&buf, " flags=%v", r.Flags) + } + return buf.String() +} + +// Respond replies to the request with the given response, +// giving the updated attributes. +func (r *SetattrRequest) Respond(resp *SetattrResponse) { + size := attrOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*attrOut)(buf.alloc(size)) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +// A SetattrResponse is the response to a SetattrRequest. +type SetattrResponse struct { + Attr Attr // file attributes +} + +func (r *SetattrResponse) String() string { + return fmt.Sprintf("Setattr %v", r.Attr) +} + +// A FlushRequest asks for the current state of an open file to be flushed +// to storage, as when a file descriptor is being closed. A single opened Handle +// may receive multiple FlushRequests over its lifetime. +type FlushRequest struct { + Header `json:"-"` + Handle HandleID + Flags uint32 + LockOwner uint64 +} + +var _ = Request(&FlushRequest{}) + +func (r *FlushRequest) String() string { + return fmt.Sprintf("Flush [%s] %v fl=%#x lk=%#x", &r.Header, r.Handle, r.Flags, r.LockOwner) +} + +// Respond replies to the request, indicating that the flush succeeded. +func (r *FlushRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// A RemoveRequest asks to remove a file or directory from the +// directory r.Node. +type RemoveRequest struct { + Header `json:"-"` + Name string // name of the entry to remove + Dir bool // is this rmdir? +} + +var _ = Request(&RemoveRequest{}) + +func (r *RemoveRequest) String() string { + return fmt.Sprintf("Remove [%s] %q dir=%v", &r.Header, r.Name, r.Dir) +} + +// Respond replies to the request, indicating that the file was removed. +func (r *RemoveRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// A SymlinkRequest is a request to create a symlink making NewName point to Target. +type SymlinkRequest struct { + Header `json:"-"` + NewName, Target string +} + +var _ = Request(&SymlinkRequest{}) + +func (r *SymlinkRequest) String() string { + return fmt.Sprintf("Symlink [%s] from %q to target %q", &r.Header, r.NewName, r.Target) +} + +// Respond replies to the request, indicating that the symlink was created. +func (r *SymlinkRequest) Respond(resp *SymlinkResponse) { + size := entryOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*entryOut)(buf.alloc(size)) + out.Nodeid = uint64(resp.Node) + out.Generation = resp.Generation + out.EntryValid = uint64(resp.EntryValid / time.Second) + out.EntryValidNsec = uint32(resp.EntryValid % time.Second / time.Nanosecond) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +// A SymlinkResponse is the response to a SymlinkRequest. +type SymlinkResponse struct { + LookupResponse +} + +func (r *SymlinkResponse) String() string { + return fmt.Sprintf("Symlink %v", r.LookupResponse.string()) +} + +// A ReadlinkRequest is a request to read a symlink's target. +type ReadlinkRequest struct { + Header `json:"-"` +} + +var _ = Request(&ReadlinkRequest{}) + +func (r *ReadlinkRequest) String() string { + return fmt.Sprintf("Readlink [%s]", &r.Header) +} + +func (r *ReadlinkRequest) Respond(target string) { + buf := newBuffer(uintptr(len(target))) + buf = append(buf, target...) + r.respond(buf) +} + +// A LinkRequest is a request to create a hard link. +type LinkRequest struct { + Header `json:"-"` + OldNode NodeID + NewName string +} + +var _ = Request(&LinkRequest{}) + +func (r *LinkRequest) String() string { + return fmt.Sprintf("Link [%s] node %d to %q", &r.Header, r.OldNode, r.NewName) +} + +func (r *LinkRequest) Respond(resp *LookupResponse) { + size := entryOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*entryOut)(buf.alloc(size)) + out.Nodeid = uint64(resp.Node) + out.Generation = resp.Generation + out.EntryValid = uint64(resp.EntryValid / time.Second) + out.EntryValidNsec = uint32(resp.EntryValid % time.Second / time.Nanosecond) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +// A RenameRequest is a request to rename a file. +type RenameRequest struct { + Header `json:"-"` + NewDir NodeID + OldName, NewName string +} + +var _ = Request(&RenameRequest{}) + +func (r *RenameRequest) String() string { + return fmt.Sprintf("Rename [%s] from %q to dirnode %v %q", &r.Header, r.OldName, r.NewDir, r.NewName) +} + +func (r *RenameRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +type MknodRequest struct { + Header `json:"-"` + Name string + Mode os.FileMode + Rdev uint32 + // Umask of the request. Not supported on OS X. + Umask os.FileMode +} + +var _ = Request(&MknodRequest{}) + +func (r *MknodRequest) String() string { + return fmt.Sprintf("Mknod [%s] Name %q mode=%v umask=%v rdev=%d", &r.Header, r.Name, r.Mode, r.Umask, r.Rdev) +} + +func (r *MknodRequest) Respond(resp *LookupResponse) { + size := entryOutSize(r.Header.Conn.proto) + buf := newBuffer(size) + out := (*entryOut)(buf.alloc(size)) + out.Nodeid = uint64(resp.Node) + out.Generation = resp.Generation + out.EntryValid = uint64(resp.EntryValid / time.Second) + out.EntryValidNsec = uint32(resp.EntryValid % time.Second / time.Nanosecond) + out.AttrValid = uint64(resp.Attr.Valid / time.Second) + out.AttrValidNsec = uint32(resp.Attr.Valid % time.Second / time.Nanosecond) + resp.Attr.attr(&out.Attr, r.Header.Conn.proto) + r.respond(buf) +} + +type FsyncRequest struct { + Header `json:"-"` + Handle HandleID + // TODO bit 1 is datasync, not well documented upstream + Flags uint32 + Dir bool +} + +var _ = Request(&FsyncRequest{}) + +func (r *FsyncRequest) String() string { + return fmt.Sprintf("Fsync [%s] Handle %v Flags %v", &r.Header, r.Handle, r.Flags) +} + +func (r *FsyncRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} + +// An InterruptRequest is a request to interrupt another pending request. The +// response to that request should return an error status of EINTR. +type InterruptRequest struct { + Header `json:"-"` + IntrID RequestID // ID of the request to be interrupt. +} + +var _ = Request(&InterruptRequest{}) + +func (r *InterruptRequest) Respond() { + // nothing to do here + r.noResponse() +} + +func (r *InterruptRequest) String() string { + return fmt.Sprintf("Interrupt [%s] ID %v", &r.Header, r.IntrID) +} + +// An ExchangeDataRequest is a request to exchange the contents of two +// files, while leaving most metadata untouched. +// +// This request comes from OS X exchangedata(2) and represents its +// specific semantics. Crucially, it is very different from Linux +// renameat(2) RENAME_EXCHANGE. +// +// https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man2/exchangedata.2.html +type ExchangeDataRequest struct { + Header `json:"-"` + OldDir, NewDir NodeID + OldName, NewName string + // TODO options +} + +var _ = Request(&ExchangeDataRequest{}) + +func (r *ExchangeDataRequest) String() string { + // TODO options + return fmt.Sprintf("ExchangeData [%s] %v %q and %v %q", &r.Header, r.OldDir, r.OldName, r.NewDir, r.NewName) +} + +func (r *ExchangeDataRequest) Respond() { + buf := newBuffer(0) + r.respond(buf) +} diff --git a/vendor/bazil.org/fuse/fuse.iml b/vendor/bazil.org/fuse/fuse.iml new file mode 100644 index 0000000000..792ad4c30c --- /dev/null +++ b/vendor/bazil.org/fuse/fuse.iml @@ -0,0 +1,9 @@ + + + + + + + + + \ No newline at end of file diff --git a/vendor/bazil.org/fuse/fuse_darwin.go b/vendor/bazil.org/fuse/fuse_darwin.go new file mode 100644 index 0000000000..b58dca97d6 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_darwin.go @@ -0,0 +1,9 @@ +package fuse + +// Maximum file write size we are prepared to receive from the kernel. +// +// This value has to be >=16MB or OSXFUSE (3.4.0 observed) will +// forcibly close the /dev/fuse file descriptor on a Setxattr with a +// 16MB value. See TestSetxattr16MB and +// https://github.com/bazil/fuse/issues/42 +const maxWrite = 16 * 1024 * 1024 diff --git a/vendor/bazil.org/fuse/fuse_freebsd.go b/vendor/bazil.org/fuse/fuse_freebsd.go new file mode 100644 index 0000000000..4aa83a0d41 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_freebsd.go @@ -0,0 +1,6 @@ +package fuse + +// Maximum file write size we are prepared to receive from the kernel. +// +// This number is just a guess. +const maxWrite = 128 * 1024 diff --git a/vendor/bazil.org/fuse/fuse_kernel.go b/vendor/bazil.org/fuse/fuse_kernel.go new file mode 100644 index 0000000000..87c5ca1dc6 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_kernel.go @@ -0,0 +1,774 @@ +// See the file LICENSE for copyright and licensing information. + +// Derived from FUSE's fuse_kernel.h, which carries this notice: +/* + This file defines the kernel interface of FUSE + Copyright (C) 2001-2007 Miklos Szeredi + + + This -- and only this -- header file may also be distributed under + the terms of the BSD Licence as follows: + + Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + SUCH DAMAGE. +*/ + +package fuse + +import ( + "fmt" + "syscall" + "unsafe" +) + +// The FUSE version implemented by the package. +const ( + protoVersionMinMajor = 7 + protoVersionMinMinor = 8 + protoVersionMaxMajor = 7 + protoVersionMaxMinor = 12 +) + +const ( + rootID = 1 +) + +type kstatfs struct { + Blocks uint64 + Bfree uint64 + Bavail uint64 + Files uint64 + Ffree uint64 + Bsize uint32 + Namelen uint32 + Frsize uint32 + _ uint32 + Spare [6]uint32 +} + +type fileLock struct { + Start uint64 + End uint64 + Type uint32 + Pid uint32 +} + +// GetattrFlags are bit flags that can be seen in GetattrRequest. +type GetattrFlags uint32 + +const ( + // Indicates the handle is valid. + GetattrFh GetattrFlags = 1 << 0 +) + +var getattrFlagsNames = []flagName{ + {uint32(GetattrFh), "GetattrFh"}, +} + +func (fl GetattrFlags) String() string { + return flagString(uint32(fl), getattrFlagsNames) +} + +// The SetattrValid are bit flags describing which fields in the SetattrRequest +// are included in the change. +type SetattrValid uint32 + +const ( + SetattrMode SetattrValid = 1 << 0 + SetattrUid SetattrValid = 1 << 1 + SetattrGid SetattrValid = 1 << 2 + SetattrSize SetattrValid = 1 << 3 + SetattrAtime SetattrValid = 1 << 4 + SetattrMtime SetattrValid = 1 << 5 + SetattrHandle SetattrValid = 1 << 6 + + // Linux only(?) + SetattrAtimeNow SetattrValid = 1 << 7 + SetattrMtimeNow SetattrValid = 1 << 8 + SetattrLockOwner SetattrValid = 1 << 9 // http://www.mail-archive.com/git-commits-head@vger.kernel.org/msg27852.html + + // OS X only + SetattrCrtime SetattrValid = 1 << 28 + SetattrChgtime SetattrValid = 1 << 29 + SetattrBkuptime SetattrValid = 1 << 30 + SetattrFlags SetattrValid = 1 << 31 +) + +func (fl SetattrValid) Mode() bool { return fl&SetattrMode != 0 } +func (fl SetattrValid) Uid() bool { return fl&SetattrUid != 0 } +func (fl SetattrValid) Gid() bool { return fl&SetattrGid != 0 } +func (fl SetattrValid) Size() bool { return fl&SetattrSize != 0 } +func (fl SetattrValid) Atime() bool { return fl&SetattrAtime != 0 } +func (fl SetattrValid) Mtime() bool { return fl&SetattrMtime != 0 } +func (fl SetattrValid) Handle() bool { return fl&SetattrHandle != 0 } +func (fl SetattrValid) AtimeNow() bool { return fl&SetattrAtimeNow != 0 } +func (fl SetattrValid) MtimeNow() bool { return fl&SetattrMtimeNow != 0 } +func (fl SetattrValid) LockOwner() bool { return fl&SetattrLockOwner != 0 } +func (fl SetattrValid) Crtime() bool { return fl&SetattrCrtime != 0 } +func (fl SetattrValid) Chgtime() bool { return fl&SetattrChgtime != 0 } +func (fl SetattrValid) Bkuptime() bool { return fl&SetattrBkuptime != 0 } +func (fl SetattrValid) Flags() bool { return fl&SetattrFlags != 0 } + +func (fl SetattrValid) String() string { + return flagString(uint32(fl), setattrValidNames) +} + +var setattrValidNames = []flagName{ + {uint32(SetattrMode), "SetattrMode"}, + {uint32(SetattrUid), "SetattrUid"}, + {uint32(SetattrGid), "SetattrGid"}, + {uint32(SetattrSize), "SetattrSize"}, + {uint32(SetattrAtime), "SetattrAtime"}, + {uint32(SetattrMtime), "SetattrMtime"}, + {uint32(SetattrHandle), "SetattrHandle"}, + {uint32(SetattrAtimeNow), "SetattrAtimeNow"}, + {uint32(SetattrMtimeNow), "SetattrMtimeNow"}, + {uint32(SetattrLockOwner), "SetattrLockOwner"}, + {uint32(SetattrCrtime), "SetattrCrtime"}, + {uint32(SetattrChgtime), "SetattrChgtime"}, + {uint32(SetattrBkuptime), "SetattrBkuptime"}, + {uint32(SetattrFlags), "SetattrFlags"}, +} + +// Flags that can be seen in OpenRequest.Flags. +const ( + // Access modes. These are not 1-bit flags, but alternatives where + // only one can be chosen. See the IsReadOnly etc convenience + // methods. + OpenReadOnly OpenFlags = syscall.O_RDONLY + OpenWriteOnly OpenFlags = syscall.O_WRONLY + OpenReadWrite OpenFlags = syscall.O_RDWR + + // File was opened in append-only mode, all writes will go to end + // of file. OS X does not provide this information. + OpenAppend OpenFlags = syscall.O_APPEND + OpenCreate OpenFlags = syscall.O_CREAT + OpenDirectory OpenFlags = syscall.O_DIRECTORY + OpenExclusive OpenFlags = syscall.O_EXCL + OpenNonblock OpenFlags = syscall.O_NONBLOCK + OpenSync OpenFlags = syscall.O_SYNC + OpenTruncate OpenFlags = syscall.O_TRUNC +) + +// OpenAccessModeMask is a bitmask that separates the access mode +// from the other flags in OpenFlags. +const OpenAccessModeMask OpenFlags = syscall.O_ACCMODE + +// OpenFlags are the O_FOO flags passed to open/create/etc calls. For +// example, os.O_WRONLY | os.O_APPEND. +type OpenFlags uint32 + +func (fl OpenFlags) String() string { + // O_RDONLY, O_RWONLY, O_RDWR are not flags + s := accModeName(fl & OpenAccessModeMask) + flags := uint32(fl &^ OpenAccessModeMask) + if flags != 0 { + s = s + "+" + flagString(flags, openFlagNames) + } + return s +} + +// Return true if OpenReadOnly is set. +func (fl OpenFlags) IsReadOnly() bool { + return fl&OpenAccessModeMask == OpenReadOnly +} + +// Return true if OpenWriteOnly is set. +func (fl OpenFlags) IsWriteOnly() bool { + return fl&OpenAccessModeMask == OpenWriteOnly +} + +// Return true if OpenReadWrite is set. +func (fl OpenFlags) IsReadWrite() bool { + return fl&OpenAccessModeMask == OpenReadWrite +} + +func accModeName(flags OpenFlags) string { + switch flags { + case OpenReadOnly: + return "OpenReadOnly" + case OpenWriteOnly: + return "OpenWriteOnly" + case OpenReadWrite: + return "OpenReadWrite" + default: + return "" + } +} + +var openFlagNames = []flagName{ + {uint32(OpenAppend), "OpenAppend"}, + {uint32(OpenCreate), "OpenCreate"}, + {uint32(OpenDirectory), "OpenDirectory"}, + {uint32(OpenExclusive), "OpenExclusive"}, + {uint32(OpenNonblock), "OpenNonblock"}, + {uint32(OpenSync), "OpenSync"}, + {uint32(OpenTruncate), "OpenTruncate"}, +} + +// The OpenResponseFlags are returned in the OpenResponse. +type OpenResponseFlags uint32 + +const ( + OpenDirectIO OpenResponseFlags = 1 << 0 // bypass page cache for this open file + OpenKeepCache OpenResponseFlags = 1 << 1 // don't invalidate the data cache on open + OpenNonSeekable OpenResponseFlags = 1 << 2 // mark the file as non-seekable (not supported on OS X) + + OpenPurgeAttr OpenResponseFlags = 1 << 30 // OS X + OpenPurgeUBC OpenResponseFlags = 1 << 31 // OS X +) + +func (fl OpenResponseFlags) String() string { + return flagString(uint32(fl), openResponseFlagNames) +} + +var openResponseFlagNames = []flagName{ + {uint32(OpenDirectIO), "OpenDirectIO"}, + {uint32(OpenKeepCache), "OpenKeepCache"}, + {uint32(OpenNonSeekable), "OpenNonSeekable"}, + {uint32(OpenPurgeAttr), "OpenPurgeAttr"}, + {uint32(OpenPurgeUBC), "OpenPurgeUBC"}, +} + +// The InitFlags are used in the Init exchange. +type InitFlags uint32 + +const ( + InitAsyncRead InitFlags = 1 << 0 + InitPosixLocks InitFlags = 1 << 1 + InitFileOps InitFlags = 1 << 2 + InitAtomicTrunc InitFlags = 1 << 3 + InitExportSupport InitFlags = 1 << 4 + InitBigWrites InitFlags = 1 << 5 + // Do not mask file access modes with umask. Not supported on OS X. + InitDontMask InitFlags = 1 << 6 + InitSpliceWrite InitFlags = 1 << 7 + InitSpliceMove InitFlags = 1 << 8 + InitSpliceRead InitFlags = 1 << 9 + InitFlockLocks InitFlags = 1 << 10 + InitHasIoctlDir InitFlags = 1 << 11 + InitAutoInvalData InitFlags = 1 << 12 + InitDoReaddirplus InitFlags = 1 << 13 + InitReaddirplusAuto InitFlags = 1 << 14 + InitAsyncDIO InitFlags = 1 << 15 + InitWritebackCache InitFlags = 1 << 16 + InitNoOpenSupport InitFlags = 1 << 17 + + InitCaseSensitive InitFlags = 1 << 29 // OS X only + InitVolRename InitFlags = 1 << 30 // OS X only + InitXtimes InitFlags = 1 << 31 // OS X only +) + +type flagName struct { + bit uint32 + name string +} + +var initFlagNames = []flagName{ + {uint32(InitAsyncRead), "InitAsyncRead"}, + {uint32(InitPosixLocks), "InitPosixLocks"}, + {uint32(InitFileOps), "InitFileOps"}, + {uint32(InitAtomicTrunc), "InitAtomicTrunc"}, + {uint32(InitExportSupport), "InitExportSupport"}, + {uint32(InitBigWrites), "InitBigWrites"}, + {uint32(InitDontMask), "InitDontMask"}, + {uint32(InitSpliceWrite), "InitSpliceWrite"}, + {uint32(InitSpliceMove), "InitSpliceMove"}, + {uint32(InitSpliceRead), "InitSpliceRead"}, + {uint32(InitFlockLocks), "InitFlockLocks"}, + {uint32(InitHasIoctlDir), "InitHasIoctlDir"}, + {uint32(InitAutoInvalData), "InitAutoInvalData"}, + {uint32(InitDoReaddirplus), "InitDoReaddirplus"}, + {uint32(InitReaddirplusAuto), "InitReaddirplusAuto"}, + {uint32(InitAsyncDIO), "InitAsyncDIO"}, + {uint32(InitWritebackCache), "InitWritebackCache"}, + {uint32(InitNoOpenSupport), "InitNoOpenSupport"}, + + {uint32(InitCaseSensitive), "InitCaseSensitive"}, + {uint32(InitVolRename), "InitVolRename"}, + {uint32(InitXtimes), "InitXtimes"}, +} + +func (fl InitFlags) String() string { + return flagString(uint32(fl), initFlagNames) +} + +func flagString(f uint32, names []flagName) string { + var s string + + if f == 0 { + return "0" + } + + for _, n := range names { + if f&n.bit != 0 { + s += "+" + n.name + f &^= n.bit + } + } + if f != 0 { + s += fmt.Sprintf("%+#x", f) + } + return s[1:] +} + +// The ReleaseFlags are used in the Release exchange. +type ReleaseFlags uint32 + +const ( + ReleaseFlush ReleaseFlags = 1 << 0 +) + +func (fl ReleaseFlags) String() string { + return flagString(uint32(fl), releaseFlagNames) +} + +var releaseFlagNames = []flagName{ + {uint32(ReleaseFlush), "ReleaseFlush"}, +} + +// Opcodes +const ( + opLookup = 1 + opForget = 2 // no reply + opGetattr = 3 + opSetattr = 4 + opReadlink = 5 + opSymlink = 6 + opMknod = 8 + opMkdir = 9 + opUnlink = 10 + opRmdir = 11 + opRename = 12 + opLink = 13 + opOpen = 14 + opRead = 15 + opWrite = 16 + opStatfs = 17 + opRelease = 18 + opFsync = 20 + opSetxattr = 21 + opGetxattr = 22 + opListxattr = 23 + opRemovexattr = 24 + opFlush = 25 + opInit = 26 + opOpendir = 27 + opReaddir = 28 + opReleasedir = 29 + opFsyncdir = 30 + opGetlk = 31 + opSetlk = 32 + opSetlkw = 33 + opAccess = 34 + opCreate = 35 + opInterrupt = 36 + opBmap = 37 + opDestroy = 38 + opIoctl = 39 // Linux? + opPoll = 40 // Linux? + + // OS X + opSetvolname = 61 + opGetxtimes = 62 + opExchange = 63 +) + +type entryOut struct { + Nodeid uint64 // Inode ID + Generation uint64 // Inode generation + EntryValid uint64 // Cache timeout for the name + AttrValid uint64 // Cache timeout for the attributes + EntryValidNsec uint32 + AttrValidNsec uint32 + Attr attr +} + +func entryOutSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 9}): + return unsafe.Offsetof(entryOut{}.Attr) + unsafe.Offsetof(entryOut{}.Attr.Blksize) + default: + return unsafe.Sizeof(entryOut{}) + } +} + +type forgetIn struct { + Nlookup uint64 +} + +type getattrIn struct { + GetattrFlags uint32 + _ uint32 + Fh uint64 +} + +type attrOut struct { + AttrValid uint64 // Cache timeout for the attributes + AttrValidNsec uint32 + _ uint32 + Attr attr +} + +func attrOutSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 9}): + return unsafe.Offsetof(attrOut{}.Attr) + unsafe.Offsetof(attrOut{}.Attr.Blksize) + default: + return unsafe.Sizeof(attrOut{}) + } +} + +// OS X +type getxtimesOut struct { + Bkuptime uint64 + Crtime uint64 + BkuptimeNsec uint32 + CrtimeNsec uint32 +} + +type mknodIn struct { + Mode uint32 + Rdev uint32 + Umask uint32 + _ uint32 + // "filename\x00" follows. +} + +func mknodInSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 12}): + return unsafe.Offsetof(mknodIn{}.Umask) + default: + return unsafe.Sizeof(mknodIn{}) + } +} + +type mkdirIn struct { + Mode uint32 + Umask uint32 + // filename follows +} + +func mkdirInSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 12}): + return unsafe.Offsetof(mkdirIn{}.Umask) + 4 + default: + return unsafe.Sizeof(mkdirIn{}) + } +} + +type renameIn struct { + Newdir uint64 + // "oldname\x00newname\x00" follows +} + +// OS X +type exchangeIn struct { + Olddir uint64 + Newdir uint64 + Options uint64 + // "oldname\x00newname\x00" follows +} + +type linkIn struct { + Oldnodeid uint64 +} + +type setattrInCommon struct { + Valid uint32 + _ uint32 + Fh uint64 + Size uint64 + LockOwner uint64 // unused on OS X? + Atime uint64 + Mtime uint64 + Unused2 uint64 + AtimeNsec uint32 + MtimeNsec uint32 + Unused3 uint32 + Mode uint32 + Unused4 uint32 + Uid uint32 + Gid uint32 + Unused5 uint32 +} + +type openIn struct { + Flags uint32 + Unused uint32 +} + +type openOut struct { + Fh uint64 + OpenFlags uint32 + _ uint32 +} + +type createIn struct { + Flags uint32 + Mode uint32 + Umask uint32 + _ uint32 +} + +func createInSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 12}): + return unsafe.Offsetof(createIn{}.Umask) + default: + return unsafe.Sizeof(createIn{}) + } +} + +type releaseIn struct { + Fh uint64 + Flags uint32 + ReleaseFlags uint32 + LockOwner uint32 +} + +type flushIn struct { + Fh uint64 + FlushFlags uint32 + _ uint32 + LockOwner uint64 +} + +type readIn struct { + Fh uint64 + Offset uint64 + Size uint32 + ReadFlags uint32 + LockOwner uint64 + Flags uint32 + _ uint32 +} + +func readInSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 9}): + return unsafe.Offsetof(readIn{}.ReadFlags) + 4 + default: + return unsafe.Sizeof(readIn{}) + } +} + +// The ReadFlags are passed in ReadRequest. +type ReadFlags uint32 + +const ( + // LockOwner field is valid. + ReadLockOwner ReadFlags = 1 << 1 +) + +var readFlagNames = []flagName{ + {uint32(ReadLockOwner), "ReadLockOwner"}, +} + +func (fl ReadFlags) String() string { + return flagString(uint32(fl), readFlagNames) +} + +type writeIn struct { + Fh uint64 + Offset uint64 + Size uint32 + WriteFlags uint32 + LockOwner uint64 + Flags uint32 + _ uint32 +} + +func writeInSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 9}): + return unsafe.Offsetof(writeIn{}.LockOwner) + default: + return unsafe.Sizeof(writeIn{}) + } +} + +type writeOut struct { + Size uint32 + _ uint32 +} + +// The WriteFlags are passed in WriteRequest. +type WriteFlags uint32 + +const ( + WriteCache WriteFlags = 1 << 0 + // LockOwner field is valid. + WriteLockOwner WriteFlags = 1 << 1 +) + +var writeFlagNames = []flagName{ + {uint32(WriteCache), "WriteCache"}, + {uint32(WriteLockOwner), "WriteLockOwner"}, +} + +func (fl WriteFlags) String() string { + return flagString(uint32(fl), writeFlagNames) +} + +const compatStatfsSize = 48 + +type statfsOut struct { + St kstatfs +} + +type fsyncIn struct { + Fh uint64 + FsyncFlags uint32 + _ uint32 +} + +type setxattrInCommon struct { + Size uint32 + Flags uint32 +} + +func (setxattrInCommon) position() uint32 { + return 0 +} + +type getxattrInCommon struct { + Size uint32 + _ uint32 +} + +func (getxattrInCommon) position() uint32 { + return 0 +} + +type getxattrOut struct { + Size uint32 + _ uint32 +} + +type lkIn struct { + Fh uint64 + Owner uint64 + Lk fileLock + LkFlags uint32 + _ uint32 +} + +func lkInSize(p Protocol) uintptr { + switch { + case p.LT(Protocol{7, 9}): + return unsafe.Offsetof(lkIn{}.LkFlags) + default: + return unsafe.Sizeof(lkIn{}) + } +} + +type lkOut struct { + Lk fileLock +} + +type accessIn struct { + Mask uint32 + _ uint32 +} + +type initIn struct { + Major uint32 + Minor uint32 + MaxReadahead uint32 + Flags uint32 +} + +const initInSize = int(unsafe.Sizeof(initIn{})) + +type initOut struct { + Major uint32 + Minor uint32 + MaxReadahead uint32 + Flags uint32 + Unused uint32 + MaxWrite uint32 +} + +type interruptIn struct { + Unique uint64 +} + +type bmapIn struct { + Block uint64 + BlockSize uint32 + _ uint32 +} + +type bmapOut struct { + Block uint64 +} + +type inHeader struct { + Len uint32 + Opcode uint32 + Unique uint64 + Nodeid uint64 + Uid uint32 + Gid uint32 + Pid uint32 + _ uint32 +} + +const inHeaderSize = int(unsafe.Sizeof(inHeader{})) + +type outHeader struct { + Len uint32 + Error int32 + Unique uint64 +} + +type dirent struct { + Ino uint64 + Off uint64 + Namelen uint32 + Type uint32 + Name [0]byte +} + +const direntSize = 8 + 8 + 4 + 4 + +const ( + notifyCodePoll int32 = 1 + notifyCodeInvalInode int32 = 2 + notifyCodeInvalEntry int32 = 3 +) + +type notifyInvalInodeOut struct { + Ino uint64 + Off int64 + Len int64 +} + +type notifyInvalEntryOut struct { + Parent uint64 + Namelen uint32 + _ uint32 +} diff --git a/vendor/bazil.org/fuse/fuse_kernel_darwin.go b/vendor/bazil.org/fuse/fuse_kernel_darwin.go new file mode 100644 index 0000000000..b9873fdf39 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_kernel_darwin.go @@ -0,0 +1,88 @@ +package fuse + +import ( + "time" +) + +type attr struct { + Ino uint64 + Size uint64 + Blocks uint64 + Atime uint64 + Mtime uint64 + Ctime uint64 + Crtime_ uint64 // OS X only + AtimeNsec uint32 + MtimeNsec uint32 + CtimeNsec uint32 + CrtimeNsec uint32 // OS X only + Mode uint32 + Nlink uint32 + Uid uint32 + Gid uint32 + Rdev uint32 + Flags_ uint32 // OS X only; see chflags(2) + Blksize uint32 + padding uint32 +} + +func (a *attr) SetCrtime(s uint64, ns uint32) { + a.Crtime_, a.CrtimeNsec = s, ns +} + +func (a *attr) SetFlags(f uint32) { + a.Flags_ = f +} + +type setattrIn struct { + setattrInCommon + + // OS X only + Bkuptime_ uint64 + Chgtime_ uint64 + Crtime uint64 + BkuptimeNsec uint32 + ChgtimeNsec uint32 + CrtimeNsec uint32 + Flags_ uint32 // see chflags(2) +} + +func (in *setattrIn) BkupTime() time.Time { + return time.Unix(int64(in.Bkuptime_), int64(in.BkuptimeNsec)) +} + +func (in *setattrIn) Chgtime() time.Time { + return time.Unix(int64(in.Chgtime_), int64(in.ChgtimeNsec)) +} + +func (in *setattrIn) Flags() uint32 { + return in.Flags_ +} + +func openFlags(flags uint32) OpenFlags { + return OpenFlags(flags) +} + +type getxattrIn struct { + getxattrInCommon + + // OS X only + Position uint32 + Padding uint32 +} + +func (g *getxattrIn) position() uint32 { + return g.Position +} + +type setxattrIn struct { + setxattrInCommon + + // OS X only + Position uint32 + Padding uint32 +} + +func (s *setxattrIn) position() uint32 { + return s.Position +} diff --git a/vendor/bazil.org/fuse/fuse_kernel_freebsd.go b/vendor/bazil.org/fuse/fuse_kernel_freebsd.go new file mode 100644 index 0000000000..b1141e41dc --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_kernel_freebsd.go @@ -0,0 +1,62 @@ +package fuse + +import "time" + +type attr struct { + Ino uint64 + Size uint64 + Blocks uint64 + Atime uint64 + Mtime uint64 + Ctime uint64 + AtimeNsec uint32 + MtimeNsec uint32 + CtimeNsec uint32 + Mode uint32 + Nlink uint32 + Uid uint32 + Gid uint32 + Rdev uint32 + Blksize uint32 + padding uint32 +} + +func (a *attr) Crtime() time.Time { + return time.Time{} +} + +func (a *attr) SetCrtime(s uint64, ns uint32) { + // ignored on freebsd +} + +func (a *attr) SetFlags(f uint32) { + // ignored on freebsd +} + +type setattrIn struct { + setattrInCommon +} + +func (in *setattrIn) BkupTime() time.Time { + return time.Time{} +} + +func (in *setattrIn) Chgtime() time.Time { + return time.Time{} +} + +func (in *setattrIn) Flags() uint32 { + return 0 +} + +func openFlags(flags uint32) OpenFlags { + return OpenFlags(flags) +} + +type getxattrIn struct { + getxattrInCommon +} + +type setxattrIn struct { + setxattrInCommon +} diff --git a/vendor/bazil.org/fuse/fuse_kernel_linux.go b/vendor/bazil.org/fuse/fuse_kernel_linux.go new file mode 100644 index 0000000000..d3ba866178 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_kernel_linux.go @@ -0,0 +1,70 @@ +package fuse + +import "time" + +type attr struct { + Ino uint64 + Size uint64 + Blocks uint64 + Atime uint64 + Mtime uint64 + Ctime uint64 + AtimeNsec uint32 + MtimeNsec uint32 + CtimeNsec uint32 + Mode uint32 + Nlink uint32 + Uid uint32 + Gid uint32 + Rdev uint32 + Blksize uint32 + padding uint32 +} + +func (a *attr) Crtime() time.Time { + return time.Time{} +} + +func (a *attr) SetCrtime(s uint64, ns uint32) { + // Ignored on Linux. +} + +func (a *attr) SetFlags(f uint32) { + // Ignored on Linux. +} + +type setattrIn struct { + setattrInCommon +} + +func (in *setattrIn) BkupTime() time.Time { + return time.Time{} +} + +func (in *setattrIn) Chgtime() time.Time { + return time.Time{} +} + +func (in *setattrIn) Flags() uint32 { + return 0 +} + +func openFlags(flags uint32) OpenFlags { + // on amd64, the 32-bit O_LARGEFILE flag is always seen; + // on i386, the flag probably depends on the app + // requesting, but in any case should be utterly + // uninteresting to us here; our kernel protocol messages + // are not directly related to the client app's kernel + // API/ABI + flags &^= 0x8000 + + return OpenFlags(flags) +} + +type getxattrIn struct { + getxattrInCommon +} + +type setxattrIn struct { + setxattrInCommon +} diff --git a/vendor/bazil.org/fuse/fuse_kernel_std.go b/vendor/bazil.org/fuse/fuse_kernel_std.go new file mode 100644 index 0000000000..074cfd3228 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_kernel_std.go @@ -0,0 +1 @@ +package fuse diff --git a/vendor/bazil.org/fuse/fuse_linux.go b/vendor/bazil.org/fuse/fuse_linux.go new file mode 100644 index 0000000000..5fb96f9ae9 --- /dev/null +++ b/vendor/bazil.org/fuse/fuse_linux.go @@ -0,0 +1,7 @@ +package fuse + +// Maximum file write size we are prepared to receive from the kernel. +// +// Linux 4.2.0 has been observed to cap this value at 128kB +// (FUSE_MAX_PAGES_PER_REQ=32, 4kB pages). +const maxWrite = 128 * 1024 diff --git a/vendor/bazil.org/fuse/fuseutil/fuseutil.go b/vendor/bazil.org/fuse/fuseutil/fuseutil.go new file mode 100644 index 0000000000..b3f52b73b2 --- /dev/null +++ b/vendor/bazil.org/fuse/fuseutil/fuseutil.go @@ -0,0 +1,20 @@ +package fuseutil // import "bazil.org/fuse/fuseutil" + +import ( + "bazil.org/fuse" +) + +// HandleRead handles a read request assuming that data is the entire file content. +// It adjusts the amount returned in resp according to req.Offset and req.Size. +func HandleRead(req *fuse.ReadRequest, resp *fuse.ReadResponse, data []byte) { + if req.Offset >= int64(len(data)) { + data = nil + } else { + data = data[req.Offset:] + } + if len(data) > req.Size { + data = data[:req.Size] + } + n := copy(resp.Data[:req.Size], data) + resp.Data = resp.Data[:n] +} diff --git a/vendor/bazil.org/fuse/mount.go b/vendor/bazil.org/fuse/mount.go new file mode 100644 index 0000000000..8054e9021c --- /dev/null +++ b/vendor/bazil.org/fuse/mount.go @@ -0,0 +1,38 @@ +package fuse + +import ( + "bufio" + "errors" + "io" + "log" + "sync" +) + +var ( + // ErrOSXFUSENotFound is returned from Mount when the OSXFUSE + // installation is not detected. + // + // Only happens on OS X. Make sure OSXFUSE is installed, or see + // OSXFUSELocations for customization. + ErrOSXFUSENotFound = errors.New("cannot locate OSXFUSE") +) + +func neverIgnoreLine(line string) bool { + return false +} + +func lineLogger(wg *sync.WaitGroup, prefix string, ignore func(line string) bool, r io.ReadCloser) { + defer wg.Done() + + scanner := bufio.NewScanner(r) + for scanner.Scan() { + line := scanner.Text() + if ignore(line) { + continue + } + log.Printf("%s: %s", prefix, line) + } + if err := scanner.Err(); err != nil { + log.Printf("%s, error reading: %v", prefix, err) + } +} diff --git a/vendor/bazil.org/fuse/mount_darwin.go b/vendor/bazil.org/fuse/mount_darwin.go new file mode 100644 index 0000000000..c1c36e62b5 --- /dev/null +++ b/vendor/bazil.org/fuse/mount_darwin.go @@ -0,0 +1,208 @@ +package fuse + +import ( + "errors" + "fmt" + "log" + "os" + "os/exec" + "path" + "strconv" + "strings" + "sync" + "syscall" +) + +var ( + errNoAvail = errors.New("no available fuse devices") + errNotLoaded = errors.New("osxfuse is not loaded") +) + +func loadOSXFUSE(bin string) error { + cmd := exec.Command(bin) + cmd.Dir = "/" + cmd.Stdout = os.Stdout + cmd.Stderr = os.Stderr + err := cmd.Run() + return err +} + +func openOSXFUSEDev(devPrefix string) (*os.File, error) { + var f *os.File + var err error + for i := uint64(0); ; i++ { + path := devPrefix + strconv.FormatUint(i, 10) + f, err = os.OpenFile(path, os.O_RDWR, 0000) + if os.IsNotExist(err) { + if i == 0 { + // not even the first device was found -> fuse is not loaded + return nil, errNotLoaded + } + + // we've run out of kernel-provided devices + return nil, errNoAvail + } + + if err2, ok := err.(*os.PathError); ok && err2.Err == syscall.EBUSY { + // try the next one + continue + } + + if err != nil { + return nil, err + } + return f, nil + } +} + +func handleMountOSXFUSE(helperName string, errCh chan<- error) func(line string) (ignore bool) { + var noMountpointPrefix = helperName + `: ` + const noMountpointSuffix = `: No such file or directory` + return func(line string) (ignore bool) { + if strings.HasPrefix(line, noMountpointPrefix) && strings.HasSuffix(line, noMountpointSuffix) { + // re-extract it from the error message in case some layer + // changed the path + mountpoint := line[len(noMountpointPrefix) : len(line)-len(noMountpointSuffix)] + err := &MountpointDoesNotExistError{ + Path: mountpoint, + } + select { + case errCh <- err: + return true + default: + // not the first error; fall back to logging it + return false + } + } + + return false + } +} + +// isBoringMountOSXFUSEError returns whether the Wait error is +// uninteresting; exit status 64 is. +func isBoringMountOSXFUSEError(err error) bool { + if err, ok := err.(*exec.ExitError); ok && err.Exited() { + if status, ok := err.Sys().(syscall.WaitStatus); ok && status.ExitStatus() == 64 { + return true + } + } + return false +} + +func callMount(bin string, daemonVar string, dir string, conf *mountConfig, f *os.File, ready chan<- struct{}, errp *error) error { + for k, v := range conf.options { + if strings.Contains(k, ",") || strings.Contains(v, ",") { + // Silly limitation but the mount helper does not + // understand any escaping. See TestMountOptionCommaError. + return fmt.Errorf("mount options cannot contain commas on darwin: %q=%q", k, v) + } + } + cmd := exec.Command( + bin, + "-o", conf.getOptions(), + // Tell osxfuse-kext how large our buffer is. It must split + // writes larger than this into multiple writes. + // + // OSXFUSE seems to ignore InitResponse.MaxWrite, and uses + // this instead. + "-o", "iosize="+strconv.FormatUint(maxWrite, 10), + // refers to fd passed in cmd.ExtraFiles + "3", + dir, + ) + cmd.ExtraFiles = []*os.File{f} + cmd.Env = os.Environ() + // OSXFUSE <3.3.0 + cmd.Env = append(cmd.Env, "MOUNT_FUSEFS_CALL_BY_LIB=") + // OSXFUSE >=3.3.0 + cmd.Env = append(cmd.Env, "MOUNT_OSXFUSE_CALL_BY_LIB=") + + daemon := os.Args[0] + if daemonVar != "" { + cmd.Env = append(cmd.Env, daemonVar+"="+daemon) + } + + stdout, err := cmd.StdoutPipe() + if err != nil { + return fmt.Errorf("setting up mount_osxfusefs stderr: %v", err) + } + stderr, err := cmd.StderrPipe() + if err != nil { + return fmt.Errorf("setting up mount_osxfusefs stderr: %v", err) + } + + if err := cmd.Start(); err != nil { + return fmt.Errorf("mount_osxfusefs: %v", err) + } + helperErrCh := make(chan error, 1) + go func() { + var wg sync.WaitGroup + wg.Add(2) + go lineLogger(&wg, "mount helper output", neverIgnoreLine, stdout) + helperName := path.Base(bin) + go lineLogger(&wg, "mount helper error", handleMountOSXFUSE(helperName, helperErrCh), stderr) + wg.Wait() + if err := cmd.Wait(); err != nil { + // see if we have a better error to report + select { + case helperErr := <-helperErrCh: + // log the Wait error if it's not what we expected + if !isBoringMountOSXFUSEError(err) { + log.Printf("mount helper failed: %v", err) + } + // and now return what we grabbed from stderr as the real + // error + *errp = helperErr + close(ready) + return + default: + // nope, fall back to generic message + } + + *errp = fmt.Errorf("mount_osxfusefs: %v", err) + close(ready) + return + } + + *errp = nil + close(ready) + }() + return nil +} + +func mount(dir string, conf *mountConfig, ready chan<- struct{}, errp *error) (*os.File, error) { + locations := conf.osxfuseLocations + if locations == nil { + locations = []OSXFUSEPaths{ + OSXFUSELocationV3, + OSXFUSELocationV2, + } + } + for _, loc := range locations { + if _, err := os.Stat(loc.Mount); os.IsNotExist(err) { + // try the other locations + continue + } + + f, err := openOSXFUSEDev(loc.DevicePrefix) + if err == errNotLoaded { + err = loadOSXFUSE(loc.Load) + if err != nil { + return nil, err + } + // try again + f, err = openOSXFUSEDev(loc.DevicePrefix) + } + if err != nil { + return nil, err + } + err = callMount(loc.Mount, loc.DaemonVar, dir, conf, f, ready, errp) + if err != nil { + f.Close() + return nil, err + } + return f, nil + } + return nil, ErrOSXFUSENotFound +} diff --git a/vendor/bazil.org/fuse/mount_freebsd.go b/vendor/bazil.org/fuse/mount_freebsd.go new file mode 100644 index 0000000000..70bb410249 --- /dev/null +++ b/vendor/bazil.org/fuse/mount_freebsd.go @@ -0,0 +1,111 @@ +package fuse + +import ( + "fmt" + "log" + "os" + "os/exec" + "strings" + "sync" + "syscall" +) + +func handleMountFusefsStderr(errCh chan<- error) func(line string) (ignore bool) { + return func(line string) (ignore bool) { + const ( + noMountpointPrefix = `mount_fusefs: ` + noMountpointSuffix = `: No such file or directory` + ) + if strings.HasPrefix(line, noMountpointPrefix) && strings.HasSuffix(line, noMountpointSuffix) { + // re-extract it from the error message in case some layer + // changed the path + mountpoint := line[len(noMountpointPrefix) : len(line)-len(noMountpointSuffix)] + err := &MountpointDoesNotExistError{ + Path: mountpoint, + } + select { + case errCh <- err: + return true + default: + // not the first error; fall back to logging it + return false + } + } + + return false + } +} + +// isBoringMountFusefsError returns whether the Wait error is +// uninteresting; exit status 1 is. +func isBoringMountFusefsError(err error) bool { + if err, ok := err.(*exec.ExitError); ok && err.Exited() { + if status, ok := err.Sys().(syscall.WaitStatus); ok && status.ExitStatus() == 1 { + return true + } + } + return false +} + +func mount(dir string, conf *mountConfig, ready chan<- struct{}, errp *error) (*os.File, error) { + for k, v := range conf.options { + if strings.Contains(k, ",") || strings.Contains(v, ",") { + // Silly limitation but the mount helper does not + // understand any escaping. See TestMountOptionCommaError. + return nil, fmt.Errorf("mount options cannot contain commas on FreeBSD: %q=%q", k, v) + } + } + + f, err := os.OpenFile("/dev/fuse", os.O_RDWR, 0000) + if err != nil { + *errp = err + return nil, err + } + + cmd := exec.Command( + "/sbin/mount_fusefs", + "--safe", + "-o", conf.getOptions(), + "3", + dir, + ) + cmd.ExtraFiles = []*os.File{f} + + stdout, err := cmd.StdoutPipe() + if err != nil { + return nil, fmt.Errorf("setting up mount_fusefs stderr: %v", err) + } + stderr, err := cmd.StderrPipe() + if err != nil { + return nil, fmt.Errorf("setting up mount_fusefs stderr: %v", err) + } + + if err := cmd.Start(); err != nil { + return nil, fmt.Errorf("mount_fusefs: %v", err) + } + helperErrCh := make(chan error, 1) + var wg sync.WaitGroup + wg.Add(2) + go lineLogger(&wg, "mount helper output", neverIgnoreLine, stdout) + go lineLogger(&wg, "mount helper error", handleMountFusefsStderr(helperErrCh), stderr) + wg.Wait() + if err := cmd.Wait(); err != nil { + // see if we have a better error to report + select { + case helperErr := <-helperErrCh: + // log the Wait error if it's not what we expected + if !isBoringMountFusefsError(err) { + log.Printf("mount helper failed: %v", err) + } + // and now return what we grabbed from stderr as the real + // error + return nil, helperErr + default: + // nope, fall back to generic message + } + return nil, fmt.Errorf("mount_fusefs: %v", err) + } + + close(ready) + return f, nil +} diff --git a/vendor/bazil.org/fuse/mount_linux.go b/vendor/bazil.org/fuse/mount_linux.go new file mode 100644 index 0000000000..197d1044e9 --- /dev/null +++ b/vendor/bazil.org/fuse/mount_linux.go @@ -0,0 +1,150 @@ +package fuse + +import ( + "fmt" + "log" + "net" + "os" + "os/exec" + "strings" + "sync" + "syscall" +) + +func handleFusermountStderr(errCh chan<- error) func(line string) (ignore bool) { + return func(line string) (ignore bool) { + if line == `fusermount: failed to open /etc/fuse.conf: Permission denied` { + // Silence this particular message, it occurs way too + // commonly and isn't very relevant to whether the mount + // succeeds or not. + return true + } + + const ( + noMountpointPrefix = `fusermount: failed to access mountpoint ` + noMountpointSuffix = `: No such file or directory` + ) + if strings.HasPrefix(line, noMountpointPrefix) && strings.HasSuffix(line, noMountpointSuffix) { + // re-extract it from the error message in case some layer + // changed the path + mountpoint := line[len(noMountpointPrefix) : len(line)-len(noMountpointSuffix)] + err := &MountpointDoesNotExistError{ + Path: mountpoint, + } + select { + case errCh <- err: + return true + default: + // not the first error; fall back to logging it + return false + } + } + + return false + } +} + +// isBoringFusermountError returns whether the Wait error is +// uninteresting; exit status 1 is. +func isBoringFusermountError(err error) bool { + if err, ok := err.(*exec.ExitError); ok && err.Exited() { + if status, ok := err.Sys().(syscall.WaitStatus); ok && status.ExitStatus() == 1 { + return true + } + } + return false +} + +func mount(dir string, conf *mountConfig, ready chan<- struct{}, errp *error) (fusefd *os.File, err error) { + // linux mount is never delayed + close(ready) + + fds, err := syscall.Socketpair(syscall.AF_FILE, syscall.SOCK_STREAM, 0) + if err != nil { + return nil, fmt.Errorf("socketpair error: %v", err) + } + + writeFile := os.NewFile(uintptr(fds[0]), "fusermount-child-writes") + defer writeFile.Close() + + readFile := os.NewFile(uintptr(fds[1]), "fusermount-parent-reads") + defer readFile.Close() + + cmd := exec.Command( + "fusermount", + "-o", conf.getOptions(), + "--", + dir, + ) + cmd.Env = append(os.Environ(), "_FUSE_COMMFD=3") + + cmd.ExtraFiles = []*os.File{writeFile} + + var wg sync.WaitGroup + stdout, err := cmd.StdoutPipe() + if err != nil { + return nil, fmt.Errorf("setting up fusermount stderr: %v", err) + } + stderr, err := cmd.StderrPipe() + if err != nil { + return nil, fmt.Errorf("setting up fusermount stderr: %v", err) + } + + if err := cmd.Start(); err != nil { + return nil, fmt.Errorf("fusermount: %v", err) + } + helperErrCh := make(chan error, 1) + wg.Add(2) + go lineLogger(&wg, "mount helper output", neverIgnoreLine, stdout) + go lineLogger(&wg, "mount helper error", handleFusermountStderr(helperErrCh), stderr) + wg.Wait() + if err := cmd.Wait(); err != nil { + // see if we have a better error to report + select { + case helperErr := <-helperErrCh: + // log the Wait error if it's not what we expected + if !isBoringFusermountError(err) { + log.Printf("mount helper failed: %v", err) + } + // and now return what we grabbed from stderr as the real + // error + return nil, helperErr + default: + // nope, fall back to generic message + } + + return nil, fmt.Errorf("fusermount: %v", err) + } + + c, err := net.FileConn(readFile) + if err != nil { + return nil, fmt.Errorf("FileConn from fusermount socket: %v", err) + } + defer c.Close() + + uc, ok := c.(*net.UnixConn) + if !ok { + return nil, fmt.Errorf("unexpected FileConn type; expected UnixConn, got %T", c) + } + + buf := make([]byte, 32) // expect 1 byte + oob := make([]byte, 32) // expect 24 bytes + _, oobn, _, _, err := uc.ReadMsgUnix(buf, oob) + scms, err := syscall.ParseSocketControlMessage(oob[:oobn]) + if err != nil { + return nil, fmt.Errorf("ParseSocketControlMessage: %v", err) + } + if len(scms) != 1 { + return nil, fmt.Errorf("expected 1 SocketControlMessage; got scms = %#v", scms) + } + scm := scms[0] + gotFds, err := syscall.ParseUnixRights(&scm) + if err != nil { + return nil, fmt.Errorf("syscall.ParseUnixRights: %v", err) + } + if len(gotFds) != 1 { + return nil, fmt.Errorf("wanted 1 fd; got %#v", gotFds) + } + f := os.NewFile(uintptr(gotFds[0]), "/dev/fuse") + return f, nil +} diff --git a/vendor/bazil.org/fuse/options.go b/vendor/bazil.org/fuse/options.go new file mode 100644 index 0000000000..65ce8a5410 --- /dev/null +++ b/vendor/bazil.org/fuse/options.go @@ -0,0 +1,310 @@ +package fuse + +import ( + "errors" + "strings" +) + +func dummyOption(conf *mountConfig) error { + return nil +} + +// mountConfig holds the configuration for a mount operation. +// Use it by passing MountOption values to Mount. +type mountConfig struct { + options map[string]string + maxReadahead uint32 + initFlags InitFlags + osxfuseLocations []OSXFUSEPaths +} + +func escapeComma(s string) string { + s = strings.Replace(s, `\`, `\\`, -1) + s = strings.Replace(s, `,`, `\,`, -1) + return s +} + +// getOptions makes a string of options suitable for passing to FUSE +// mount flag `-o`. Returns an empty string if no options were set. +// Any platform specific adjustments should happen before the call. +func (m *mountConfig) getOptions() string { + var opts []string + for k, v := range m.options { + k = escapeComma(k) + if v != "" { + k += "=" + escapeComma(v) + } + opts = append(opts, k) + } + return strings.Join(opts, ",") +} + +type mountOption func(*mountConfig) error + +// MountOption is passed to Mount to change the behavior of the mount. +type MountOption mountOption + +// FSName sets the file system name (also called source) that is +// visible in the list of mounted file systems. +// +// FreeBSD ignores this option. +func FSName(name string) MountOption { + return func(conf *mountConfig) error { + conf.options["fsname"] = name + return nil + } +} + +// Subtype sets the subtype of the mount. The main type is always +// `fuse`. The type in a list of mounted file systems will look like +// `fuse.foo`. +// +// OS X ignores this option. +// FreeBSD ignores this option. +func Subtype(fstype string) MountOption { + return func(conf *mountConfig) error { + conf.options["subtype"] = fstype + return nil + } +} + +// LocalVolume sets the volume to be local (instead of network), +// changing the behavior of Finder, Spotlight, and such. +// +// OS X only. Others ignore this option. +func LocalVolume() MountOption { + return localVolume +} + +// VolumeName sets the volume name shown in Finder. +// +// OS X only. Others ignore this option. +func VolumeName(name string) MountOption { + return volumeName(name) +} + +// NoAppleDouble makes OSXFUSE disallow files with names used by OS X +// to store extended attributes on file systems that do not support +// them natively. +// +// Such file names are: +// +// ._* +// .DS_Store +// +// OS X only. Others ignore this option. +func NoAppleDouble() MountOption { + return noAppleDouble +} + +// NoAppleXattr makes OSXFUSE disallow extended attributes with the +// prefix "com.apple.". This disables persistent Finder state and +// other such information. +// +// OS X only. Others ignore this option. +func NoAppleXattr() MountOption { + return noAppleXattr +} + +// ExclCreate causes O_EXCL flag to be set for only "truly" exclusive creates, +// i.e. create calls for which the initiator explicitly set the O_EXCL flag. +// +// OSXFUSE expects all create calls to return EEXIST in case the file +// already exists, regardless of whether O_EXCL was specified or not. +// To ensure this behavior, it normally sets OpenExclusive for all +// Create calls, regardless of whether the original call had it set. +// For distributed filesystems, that may force every file create to be +// a distributed consensus action, causing undesirable delays. +// +// This option makes the FUSE filesystem see the original flag value, +// and better decide when to ensure global consensus. +// +// Note that returning EEXIST on existing file create is still +// expected with OSXFUSE, regardless of the presence of the +// OpenExclusive flag. +// +// For more information, see +// https://github.com/osxfuse/osxfuse/issues/209 +// +// OS X only. Others ignore this options. +// Requires OSXFUSE 3.4.1 or newer. +func ExclCreate() MountOption { + return exclCreate +} + +// DaemonTimeout sets the time in seconds between a request and a reply before +// the FUSE mount is declared dead. +// +// OS X and FreeBSD only. Others ignore this option. +func DaemonTimeout(name string) MountOption { + return daemonTimeout(name) +} + +var ErrCannotCombineAllowOtherAndAllowRoot = errors.New("cannot combine AllowOther and AllowRoot") + +// AllowOther allows other users to access the file system. +// +// Only one of AllowOther or AllowRoot can be used. +func AllowOther() MountOption { + return func(conf *mountConfig) error { + if _, ok := conf.options["allow_root"]; ok { + return ErrCannotCombineAllowOtherAndAllowRoot + } + conf.options["allow_other"] = "" + return nil + } +} + +// AllowRoot allows other users to access the file system. +// +// Only one of AllowOther or AllowRoot can be used. +// +// FreeBSD ignores this option. +func AllowRoot() MountOption { + return func(conf *mountConfig) error { + if _, ok := conf.options["allow_other"]; ok { + return ErrCannotCombineAllowOtherAndAllowRoot + } + conf.options["allow_root"] = "" + return nil + } +} + +// AllowDev enables interpreting character or block special devices on the +// filesystem. +func AllowDev() MountOption { + return func(conf *mountConfig) error { + conf.options["dev"] = "" + return nil + } +} + +// AllowSUID allows set-user-identifier or set-group-identifier bits to take +// effect. +func AllowSUID() MountOption { + return func(conf *mountConfig) error { + conf.options["suid"] = "" + return nil + } +} + +// DefaultPermissions makes the kernel enforce access control based on +// the file mode (as in chmod). +// +// Without this option, the Node itself decides what is and is not +// allowed. This is normally ok because FUSE file systems cannot be +// accessed by other users without AllowOther/AllowRoot. +// +// FreeBSD ignores this option. +func DefaultPermissions() MountOption { + return func(conf *mountConfig) error { + conf.options["default_permissions"] = "" + return nil + } +} + +// ReadOnly makes the mount read-only. +func ReadOnly() MountOption { + return func(conf *mountConfig) error { + conf.options["ro"] = "" + return nil + } +} + +// MaxReadahead sets the number of bytes that can be prefetched for +// sequential reads. The kernel can enforce a maximum value lower than +// this. +// +// This setting makes the kernel perform speculative reads that do not +// originate from any client process. This usually tremendously +// improves read performance. +func MaxReadahead(n uint32) MountOption { + return func(conf *mountConfig) error { + conf.maxReadahead = n + return nil + } +} + +// AsyncRead enables multiple outstanding read requests for the same +// handle. Without this, there is at most one request in flight at a +// time. +func AsyncRead() MountOption { + return func(conf *mountConfig) error { + conf.initFlags |= InitAsyncRead + return nil + } +} + +// WritebackCache enables the kernel to buffer writes before sending +// them to the FUSE server. Without this, writethrough caching is +// used. +func WritebackCache() MountOption { + return func(conf *mountConfig) error { + conf.initFlags |= InitWritebackCache + return nil + } +} + +// OSXFUSEPaths describes the paths used by an installed OSXFUSE +// version. See OSXFUSELocationV3 for typical values. +type OSXFUSEPaths struct { + // Prefix for the device file. At mount time, an incrementing + // number is suffixed until a free FUSE device is found. + DevicePrefix string + // Path of the load helper, used to load the kernel extension if + // no device files are found. + Load string + // Path of the mount helper, used for the actual mount operation. + Mount string + // Environment variable used to pass the path to the executable + // calling the mount helper. + DaemonVar string +} + +// Default paths for OSXFUSE. See OSXFUSELocations. +var ( + OSXFUSELocationV3 = OSXFUSEPaths{ + DevicePrefix: "/dev/osxfuse", + Load: "/Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse", + Mount: "/Library/Filesystems/osxfuse.fs/Contents/Resources/mount_osxfuse", + DaemonVar: "MOUNT_OSXFUSE_DAEMON_PATH", + } + OSXFUSELocationV2 = OSXFUSEPaths{ + DevicePrefix: "/dev/osxfuse", + Load: "/Library/Filesystems/osxfusefs.fs/Support/load_osxfusefs", + Mount: "/Library/Filesystems/osxfusefs.fs/Support/mount_osxfusefs", + DaemonVar: "MOUNT_FUSEFS_DAEMON_PATH", + } +) + +// OSXFUSELocations sets where to look for OSXFUSE files. The +// arguments are all the possible locations. The previous locations +// are replaced. +// +// Without this option, OSXFUSELocationV3 and OSXFUSELocationV2 are +// used. +// +// OS X only. Others ignore this option. +func OSXFUSELocations(paths ...OSXFUSEPaths) MountOption { + return func(conf *mountConfig) error { + if len(paths) == 0 { + return errors.New("must specify at least one location for OSXFUSELocations") + } + // replace previous values, but make a copy so there's no + // worries about caller mutating their slice + conf.osxfuseLocations = append(conf.osxfuseLocations[:0], paths...) + return nil + } +} + +// AllowNonEmptyMount allows the mounting over a non-empty directory. +// +// The files in it will be shadowed by the freshly created mount. By +// default these mounts are rejected to prevent accidental covering up +// of data, which could for example prevent automatic backup. +func AllowNonEmptyMount() MountOption { + return func(conf *mountConfig) error { + conf.options["nonempty"] = "" + return nil + } +} diff --git a/vendor/bazil.org/fuse/options_darwin.go b/vendor/bazil.org/fuse/options_darwin.go new file mode 100644 index 0000000000..faa9d78e74 --- /dev/null +++ b/vendor/bazil.org/fuse/options_darwin.go @@ -0,0 +1,35 @@ +package fuse + +func localVolume(conf *mountConfig) error { + conf.options["local"] = "" + return nil +} + +func volumeName(name string) MountOption { + return func(conf *mountConfig) error { + conf.options["volname"] = name + return nil + } +} + +func daemonTimeout(name string) MountOption { + return func(conf *mountConfig) error { + conf.options["daemon_timeout"] = name + return nil + } +} + +func noAppleXattr(conf *mountConfig) error { + conf.options["noapplexattr"] = "" + return nil +} + +func noAppleDouble(conf *mountConfig) error { + conf.options["noappledouble"] = "" + return nil +} + +func exclCreate(conf *mountConfig) error { + conf.options["excl_create"] = "" + return nil +} diff --git a/vendor/bazil.org/fuse/options_freebsd.go b/vendor/bazil.org/fuse/options_freebsd.go new file mode 100644 index 0000000000..7c164b1368 --- /dev/null +++ b/vendor/bazil.org/fuse/options_freebsd.go @@ -0,0 +1,28 @@ +package fuse + +func localVolume(conf *mountConfig) error { + return nil +} + +func volumeName(name string) MountOption { + return dummyOption +} + +func daemonTimeout(name string) MountOption { + return func(conf *mountConfig) error { + conf.options["timeout"] = name + return nil + } +} + +func noAppleXattr(conf *mountConfig) error { + return nil +} + +func noAppleDouble(conf *mountConfig) error { + return nil +} + +func exclCreate(conf *mountConfig) error { + return nil +} diff --git a/vendor/bazil.org/fuse/options_linux.go b/vendor/bazil.org/fuse/options_linux.go new file mode 100644 index 0000000000..13f0896d58 --- /dev/null +++ b/vendor/bazil.org/fuse/options_linux.go @@ -0,0 +1,25 @@ +package fuse + +func localVolume(conf *mountConfig) error { + return nil +} + +func volumeName(name string) MountOption { + return dummyOption +} + +func daemonTimeout(name string) MountOption { + return dummyOption +} + +func noAppleXattr(conf *mountConfig) error { + return nil +} + +func noAppleDouble(conf *mountConfig) error { + return nil +} + +func exclCreate(conf *mountConfig) error { + return nil +} diff --git a/vendor/bazil.org/fuse/protocol.go b/vendor/bazil.org/fuse/protocol.go new file mode 100644 index 0000000000..a77bbf72f1 --- /dev/null +++ b/vendor/bazil.org/fuse/protocol.go @@ -0,0 +1,75 @@ +package fuse + +import ( + "fmt" +) + +// Protocol is a FUSE protocol version number. +type Protocol struct { + Major uint32 + Minor uint32 +} + +func (p Protocol) String() string { + return fmt.Sprintf("%d.%d", p.Major, p.Minor) +} + +// LT returns whether a is less than b. +func (a Protocol) LT(b Protocol) bool { + return a.Major < b.Major || + (a.Major == b.Major && a.Minor < b.Minor) +} + +// GE returns whether a is greater than or equal to b. +func (a Protocol) GE(b Protocol) bool { + return a.Major > b.Major || + (a.Major == b.Major && a.Minor >= b.Minor) +} + +func (a Protocol) is79() bool { + return a.GE(Protocol{7, 9}) +} + +// HasAttrBlockSize returns whether Attr.BlockSize is respected by the +// kernel. +func (a Protocol) HasAttrBlockSize() bool { + return a.is79() +} + +// HasReadWriteFlags returns whether ReadRequest/WriteRequest +// fields Flags and FileFlags are valid. +func (a Protocol) HasReadWriteFlags() bool { + return a.is79() +} + +// HasGetattrFlags returns whether GetattrRequest field Flags is +// valid. +func (a Protocol) HasGetattrFlags() bool { + return a.is79() +} + +func (a Protocol) is710() bool { + return a.GE(Protocol{7, 10}) +} + +// HasOpenNonSeekable returns whether OpenResponse field Flags flag +// OpenNonSeekable is supported. +func (a Protocol) HasOpenNonSeekable() bool { + return a.is710() +} + +func (a Protocol) is712() bool { + return a.GE(Protocol{7, 12}) +} + +// HasUmask returns whether CreateRequest/MkdirRequest/MknodRequest +// field Umask is valid. +func (a Protocol) HasUmask() bool { + return a.is712() +} + +// HasInvalidate returns whether InvalidateNode/InvalidateEntry are +// supported. +func (a Protocol) HasInvalidate() bool { + return a.is712() +} diff --git a/vendor/bazil.org/fuse/unmount.go b/vendor/bazil.org/fuse/unmount.go new file mode 100644 index 0000000000..ffe3f155c4 --- /dev/null +++ b/vendor/bazil.org/fuse/unmount.go @@ -0,0 +1,6 @@ +package fuse + +// Unmount tries to unmount the filesystem mounted at dir. +func Unmount(dir string) error { + return unmount(dir) +} diff --git a/vendor/bazil.org/fuse/unmount_linux.go b/vendor/bazil.org/fuse/unmount_linux.go new file mode 100644 index 0000000000..088f0cfeee --- /dev/null +++ b/vendor/bazil.org/fuse/unmount_linux.go @@ -0,0 +1,21 @@ +package fuse + +import ( + "bytes" + "errors" + "os/exec" +) + +func unmount(dir string) error { + cmd := exec.Command("fusermount", "-u", dir) + output, err := cmd.CombinedOutput() + if err != nil { + if len(output) > 0 { + output = bytes.TrimRight(output, "\n") + msg := err.Error() + ": " + string(output) + err = errors.New(msg) + } + return err + } + return nil +} diff --git a/vendor/bazil.org/fuse/unmount_std.go b/vendor/bazil.org/fuse/unmount_std.go new file mode 100644 index 0000000000..d6efe276f6 --- /dev/null +++ b/vendor/bazil.org/fuse/unmount_std.go @@ -0,0 +1,17 @@ +// +build !linux + +package fuse + +import ( + "os" + "syscall" +) + +func unmount(dir string) error { + err := syscall.Unmount(dir, 0) + if err != nil { + err = &os.PathError{Op: "unmount", Path: dir, Err: err} + return err + } + return nil +} diff --git a/vendor/vendor.json b/vendor/vendor.json index eaaf0290d1..c19d600c09 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -2,6 +2,24 @@ "comment": "", "ignore": "test", "package": [ + { + "checksumSHA1": "b5bkSc2hlmUV7PlLY6JlLwiJpiE=", + "path": "bazil.org/fuse", + "revision": "371fbbdaa8987b715bdd21d6adc4c9b20155f748", + "revisionTime": "2016-08-11T21:22:31Z" + }, + { + "checksumSHA1": "389JFJTJADMtZkTIfdSnsmHVOUs=", + "path": "bazil.org/fuse/fs", + "revision": "371fbbdaa8987b715bdd21d6adc4c9b20155f748", + "revisionTime": "2016-08-11T21:22:31Z" + }, + { + "checksumSHA1": "NPgkh9UWMsaTtsAAs3kPrclHT9Y=", + "path": "bazil.org/fuse/fuseutil", + "revision": "371fbbdaa8987b715bdd21d6adc4c9b20155f748", + "revisionTime": "2016-08-11T21:22:31Z" + }, { "checksumSHA1": "M30X+Wqn7AnUr1numUOkQRI7ET0=", "path": "github.com/Azure/azure-sdk-for-go/storage", From e7911ad9ea38eaf8707b7247a5ac96bc81de856c Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 23 Mar 2017 15:46:03 +0100 Subject: [PATCH 33/57] build: unify vendor skipping logic This fixes a recent bug where 'make geth' built everything instead of just geth. --- build/ci.go | 29 +++-------------------------- internal/build/util.go | 28 ++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+), 26 deletions(-) diff --git a/build/ci.go b/build/ci.go index 27589fc7f5..fcdd337888 100644 --- a/build/ci.go +++ b/build/ci.go @@ -173,19 +173,7 @@ func doInstall(cmdline []string) { if flag.NArg() > 0 { packages = flag.Args() } - - // Resolve ./... manually and remove vendor/bazil/fuse (fuse is not in windows) - out, err := goTool("list", "./...").CombinedOutput() - if err != nil { - log.Fatalf("package listing failed: %v\n%s", err, string(out)) - } - packages = []string{} - for _, line := range strings.Split(string(out), "\n") { - if !strings.Contains(line, "vendor") { - packages = append(packages, strings.TrimSpace(line)) - } - } - + packages = build.ExpandPackagesNoVendor(packages) if *arch == "" || *arch == runtime.GOARCH { goinstall := goTool("install", buildFlags(env)...) @@ -284,19 +272,8 @@ func doTest(cmdline []string) { if len(flag.CommandLine.Args()) > 0 { packages = flag.CommandLine.Args() } - if len(packages) == 1 && packages[0] == "./..." { - // Resolve ./... manually since go vet will fail on vendored stuff - out, err := goTool("list", "./...").CombinedOutput() - if err != nil { - log.Fatalf("package listing failed: %v\n%s", err, string(out)) - } - packages = []string{} - for _, line := range strings.Split(string(out), "\n") { - if !strings.Contains(line, "vendor") { - packages = append(packages, strings.TrimSpace(line)) - } - } - } + packages = build.ExpandPackagesNoVendor(packages) + // Run analysis tools before the tests. if *vet { build.MustRun(goTool("vet", packages...)) diff --git a/internal/build/util.go b/internal/build/util.go index 4df7b91381..44f6760b95 100644 --- a/internal/build/util.go +++ b/internal/build/util.go @@ -26,6 +26,7 @@ import ( "os" "os/exec" "path/filepath" + "runtime" "strings" "text/template" ) @@ -136,3 +137,30 @@ func CopyFile(dst, src string, mode os.FileMode) { log.Fatal(err) } } + +// ExpandPackagesNoVendor expands a cmd/go import path pattern, skipping +// vendored packages. +func ExpandPackagesNoVendor(patterns []string) []string { + expand := false + for _, pkg := range patterns { + if strings.Contains(pkg, "...") { + expand = true + } + } + if expand { + args := append([]string{"list"}, patterns...) + cmd := exec.Command(filepath.Join(runtime.GOROOT(), "bin", "go"), args...) + out, err := cmd.CombinedOutput() + if err != nil { + log.Fatalf("package listing failed: %v\n%s", err, string(out)) + } + var packages []string + for _, line := range strings.Split(string(out), "\n") { + if !strings.Contains(line, "/vendor/") { + packages = append(packages, strings.TrimSpace(line)) + } + } + return packages + } + return patterns +} From 26da6daaa96a6d45187e5a2ff519676e9e772cb2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Mon, 20 Mar 2017 13:35:56 +0200 Subject: [PATCH 34/57] accounts/usbwallet: fix Ledger hidapi/libusb protocol violation --- accounts/usbwallet/ledger_hub.go | 43 ++++++++++++++++++++--------- accounts/usbwallet/ledger_wallet.go | 6 ++++ 2 files changed, 36 insertions(+), 13 deletions(-) diff --git a/accounts/usbwallet/ledger_hub.go b/accounts/usbwallet/ledger_hub.go index db874f4cce..ed992a82dd 100644 --- a/accounts/usbwallet/ledger_hub.go +++ b/accounts/usbwallet/ledger_hub.go @@ -22,6 +22,7 @@ package usbwallet import ( "errors" + "runtime" "sync" "time" @@ -55,7 +56,9 @@ type LedgerHub struct { updating bool // Whether the event notification loop is running quit chan chan error - lock sync.RWMutex + + stateLock sync.RWMutex // Protects the internals of the hub from racey access + commsLock sync.RWMutex // Allows wallets to lock enumeration (TODO(karalabe): remove if hotplug lands on Windows) } // NewLedgerHub creates a new hardware wallet manager for Ledger devices. @@ -76,8 +79,8 @@ func (hub *LedgerHub) Wallets() []accounts.Wallet { // Make sure the list of wallets is up to date hub.refreshWallets() - hub.lock.RLock() - defer hub.lock.RUnlock() + hub.stateLock.RLock() + defer hub.stateLock.RUnlock() cpy := make([]accounts.Wallet, len(hub.wallets)) copy(cpy, hub.wallets) @@ -88,15 +91,25 @@ func (hub *LedgerHub) Wallets() []accounts.Wallet { // list of wallets based on the found devices. func (hub *LedgerHub) refreshWallets() { // Don't scan the USB like crazy it the user fetches wallets in a loop - hub.lock.RLock() + hub.stateLock.RLock() elapsed := time.Since(hub.refreshed) - hub.lock.RUnlock() + hub.stateLock.RUnlock() if elapsed < ledgerRefreshThrottling { return } // Retrieve the current list of Ledger devices var ledgers []hid.DeviceInfo + + if runtime.GOOS == "linux" { + // hidapi on Linux opens the device during enumeration to retrieve some infos, + // breaking the Ledger protocol if that is waiting for user confirmation. This + // is a bug acknowledged at Ledger, but it won't be fixed on old devices so we + // need to prevent concurrent comms ourselves. The more elegant solution would + // be to ditch enumeration in favor of hutplug events, but that don't work yet + // on Windows so if we need to hack it anyway, this is more elegant for now. + hub.commsLock.Lock() + } for _, info := range hid.Enumerate(0, 0) { // Can't enumerate directly, one valid ID is the 0 wildcard for _, id := range ledgerDeviceIDs { if info.VendorID == id.Vendor && info.ProductID == id.Product { @@ -105,8 +118,12 @@ func (hub *LedgerHub) refreshWallets() { } } } + if runtime.GOOS == "linux" { + // See rationale before the enumeration why this is needed and only on Linux. + hub.commsLock.Unlock() + } // Transform the current list of wallets into the new one - hub.lock.Lock() + hub.stateLock.Lock() wallets := make([]accounts.Wallet, 0, len(ledgers)) events := []accounts.WalletEvent{} @@ -121,7 +138,7 @@ func (hub *LedgerHub) refreshWallets() { } // If there are no more wallets or the device is before the next, wrap new wallet if len(hub.wallets) == 0 || hub.wallets[0].URL().Cmp(url) > 0 { - wallet := &ledgerWallet{url: &url, info: ledger, log: log.New("url", url)} + wallet := &ledgerWallet{hub: hub, url: &url, info: ledger, log: log.New("url", url)} events = append(events, accounts.WalletEvent{Wallet: wallet, Arrive: true}) wallets = append(wallets, wallet) @@ -140,7 +157,7 @@ func (hub *LedgerHub) refreshWallets() { } hub.refreshed = time.Now() hub.wallets = wallets - hub.lock.Unlock() + hub.stateLock.Unlock() // Fire all wallet events and return for _, event := range events { @@ -152,8 +169,8 @@ func (hub *LedgerHub) refreshWallets() { // receive notifications on the addition or removal of Ledger wallets. func (hub *LedgerHub) Subscribe(sink chan<- accounts.WalletEvent) event.Subscription { // We need the mutex to reliably start/stop the update loop - hub.lock.Lock() - defer hub.lock.Unlock() + hub.stateLock.Lock() + defer hub.stateLock.Unlock() // Subscribe the caller and track the subscriber count sub := hub.updateScope.Track(hub.updateFeed.Subscribe(sink)) @@ -182,12 +199,12 @@ func (hub *LedgerHub) updater() { hub.refreshWallets() // If all our subscribers left, stop the updater - hub.lock.Lock() + hub.stateLock.Lock() if hub.updateScope.Count() == 0 { hub.updating = false - hub.lock.Unlock() + hub.stateLock.Unlock() return } - hub.lock.Unlock() + hub.stateLock.Unlock() } } diff --git a/accounts/usbwallet/ledger_wallet.go b/accounts/usbwallet/ledger_wallet.go index 698e85f48b..97434ed3bd 100644 --- a/accounts/usbwallet/ledger_wallet.go +++ b/accounts/usbwallet/ledger_wallet.go @@ -83,6 +83,7 @@ var errInvalidVersionReply = errors.New("invalid version reply") // ledgerWallet represents a live USB Ledger hardware wallet. type ledgerWallet struct { + hub *LedgerHub // USB hub the device originates from (TODO(karalabe): remove if hotplug lands on Windows) url *accounts.URL // Textual URL uniquely identifying this wallet info hid.DeviceInfo // Known USB device infos about the wallet @@ -576,6 +577,11 @@ func (w *ledgerWallet) SignTx(account accounts.Account, tx *types.Transaction, c <-w.commsLock defer func() { w.commsLock <- struct{}{} }() + // Ensure the device isn't screwed with while user confirmation is pending + // TODO(karalabe): remove if hotplug lands on Windows + w.hub.commsLock.RLock() + defer w.hub.commsLock.RUnlock() + return w.ledgerSign(path, account.Address, tx, chainID) } From 04fa6a374499dcefeb3f854c4cf6cfcdfb6c8c76 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 7 Mar 2017 23:19:44 +0100 Subject: [PATCH 35/57] common/math: add HexOrDecimal64, HexOrDecimal256 --- common/math/big.go | 19 +++++++++++++++++++ common/math/big_test.go | 13 +++++++------ common/math/integer.go | 23 ++++++++++++++++++++++- common/math/integer_test.go | 11 ++++++----- 4 files changed, 54 insertions(+), 12 deletions(-) diff --git a/common/math/big.go b/common/math/big.go index 704ca40a93..0b67a1b503 100644 --- a/common/math/big.go +++ b/common/math/big.go @@ -18,6 +18,7 @@ package math import ( + "fmt" "math/big" ) @@ -35,6 +36,24 @@ const ( wordBytes = wordBits / 8 ) +// HexOrDecimal256 marshals big.Int as hex or decimal. +type HexOrDecimal256 big.Int + +// UnmarshalText implements encoding.TextUnmarshaler. +func (i *HexOrDecimal256) UnmarshalText(input []byte) error { + bigint, ok := ParseBig256(string(input)) + if !ok { + return fmt.Errorf("invalid hex or decimal integer %q", input) + } + *i = HexOrDecimal256(*bigint) + return nil +} + +// MarshalText implements encoding.TextMarshaler. +func (i *HexOrDecimal256) MarshalText() ([]byte, error) { + return []byte(fmt.Sprintf("%#x", (*big.Int)(i))), nil +} + // ParseBig256 parses s as a 256 bit integer in decimal or hexadecimal syntax. // Leading zeros are accepted. The empty string parses as zero. func ParseBig256(s string) (*big.Int, bool) { diff --git a/common/math/big_test.go b/common/math/big_test.go index 6eb13f4f12..deff254658 100644 --- a/common/math/big_test.go +++ b/common/math/big_test.go @@ -23,7 +23,7 @@ import ( "testing" ) -func TestParseBig256(t *testing.T) { +func TestHexOrDecimal256(t *testing.T) { tests := []struct { input string num *big.Int @@ -47,13 +47,14 @@ func TestParseBig256(t *testing.T) { {"115792089237316195423570985008687907853269984665640564039457584007913129639936", nil, false}, } for _, test := range tests { - num, ok := ParseBig256(test.input) - if ok != test.ok { - t.Errorf("ParseBig(%q) -> ok = %t, want %t", test.input, ok, test.ok) + var num HexOrDecimal256 + err := num.UnmarshalText([]byte(test.input)) + if (err == nil) != test.ok { + t.Errorf("ParseBig(%q) -> (err == nil) == %t, want %t", test.input, err == nil, test.ok) continue } - if num != nil && test.num != nil && num.Cmp(test.num) != 0 { - t.Errorf("ParseBig(%q) -> %d, want %d", test.input, num, test.num) + if test.num != nil && (*big.Int)(&num).Cmp(test.num) != 0 { + t.Errorf("ParseBig(%q) -> %d, want %d", test.input, (*big.Int)(&num), test.num) } } } diff --git a/common/math/integer.go b/common/math/integer.go index a3eeee27e7..7eff4d3b00 100644 --- a/common/math/integer.go +++ b/common/math/integer.go @@ -16,7 +16,10 @@ package math -import "strconv" +import ( + "fmt" + "strconv" +) const ( // Integer limit values. @@ -34,6 +37,24 @@ const ( MaxUint64 = 1<<64 - 1 ) +// HexOrDecimal64 marshals uint64 as hex or decimal. +type HexOrDecimal64 uint64 + +// UnmarshalText implements encoding.TextUnmarshaler. +func (i *HexOrDecimal64) UnmarshalText(input []byte) error { + int, ok := ParseUint64(string(input)) + if !ok { + return fmt.Errorf("invalid hex or decimal integer %q", input) + } + *i = HexOrDecimal64(int) + return nil +} + +// MarshalText implements encoding.TextMarshaler. +func (i HexOrDecimal64) MarshalText() ([]byte, error) { + return []byte(fmt.Sprintf("%#x", uint64(i))), nil +} + // ParseUint64 parses s as an integer in decimal or hexadecimal syntax. // Leading zeros are accepted. The empty string parses as zero. func ParseUint64(s string) (uint64, bool) { diff --git a/common/math/integer_test.go b/common/math/integer_test.go index 05bba221f9..b31c7c26c2 100644 --- a/common/math/integer_test.go +++ b/common/math/integer_test.go @@ -65,7 +65,7 @@ func TestOverflow(t *testing.T) { } } -func TestParseUint64(t *testing.T) { +func TestHexOrDecimal64(t *testing.T) { tests := []struct { input string num uint64 @@ -88,12 +88,13 @@ func TestParseUint64(t *testing.T) { {"18446744073709551617", 0, false}, } for _, test := range tests { - num, ok := ParseUint64(test.input) - if ok != test.ok { - t.Errorf("ParseUint64(%q) -> ok = %t, want %t", test.input, ok, test.ok) + var num HexOrDecimal64 + err := num.UnmarshalText([]byte(test.input)) + if (err == nil) != test.ok { + t.Errorf("ParseUint64(%q) -> (err == nil) = %t, want %t", test.input, err == nil, test.ok) continue } - if ok && num != test.num { + if err == nil && uint64(num) != test.num { t.Errorf("ParseUint64(%q) -> %d, want %d", test.input, num, test.num) } } From b4547a560b861e2e5463bf6fed6d61958c4e9411 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 7 Mar 2017 23:19:27 +0100 Subject: [PATCH 36/57] common/hexutil: add UnmarshalFixedUnprefixedText --- common/hexutil/json.go | 32 +++++++++++++++++++++++++++----- common/hexutil/json_test.go | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+), 5 deletions(-) diff --git a/common/hexutil/json.go b/common/hexutil/json.go index 23393ed2c5..1bc1d014c7 100644 --- a/common/hexutil/json.go +++ b/common/hexutil/json.go @@ -51,7 +51,7 @@ func (b *Bytes) UnmarshalJSON(input []byte) error { // UnmarshalText implements encoding.TextUnmarshaler. func (b *Bytes) UnmarshalText(input []byte) error { - raw, err := checkText(input) + raw, err := checkText(input, true) if err != nil { return err } @@ -73,7 +73,28 @@ func (b Bytes) String() string { // determines the required input length. This function is commonly used to implement the // UnmarshalText method for fixed-size types. func UnmarshalFixedText(typname string, input, out []byte) error { - raw, err := checkText(input) + raw, err := checkText(input, true) + if err != nil { + return err + } + if len(raw)/2 != len(out) { + return fmt.Errorf("hex string has length %d, want %d for %s", len(raw), len(out)*2, typname) + } + // Pre-verify syntax before modifying out. + for _, b := range raw { + if decodeNibble(b) == badNibble { + return ErrSyntax + } + } + hex.Decode(out, raw) + return nil +} + +// UnmarshalFixedUnprefixedText decodes the input as a string with optional 0x prefix. The +// length of out determines the required input length. This function is commonly used to +// implement the UnmarshalText method for fixed-size types. +func UnmarshalFixedUnprefixedText(typname string, input, out []byte) error { + raw, err := checkText(input, false) if err != nil { return err } @@ -243,14 +264,15 @@ func bytesHave0xPrefix(input []byte) bool { return len(input) >= 2 && input[0] == '0' && (input[1] == 'x' || input[1] == 'X') } -func checkText(input []byte) ([]byte, error) { +func checkText(input []byte, wantPrefix bool) ([]byte, error) { if len(input) == 0 { return nil, nil // empty strings are allowed } - if !bytesHave0xPrefix(input) { + if bytesHave0xPrefix(input) { + input = input[2:] + } else if wantPrefix { return nil, ErrMissingPrefix } - input = input[2:] if len(input)%2 != 0 { return nil, ErrOddLength } diff --git a/common/hexutil/json_test.go b/common/hexutil/json_test.go index af7f44915a..e4e8274915 100644 --- a/common/hexutil/json_test.go +++ b/common/hexutil/json_test.go @@ -337,3 +337,38 @@ func TestUnmarshalUint(t *testing.T) { } } } + +func TestUnmarshalFixedUnprefixedText(t *testing.T) { + tests := []struct { + input string + want []byte + wantErr error + }{ + {input: "0x2", wantErr: ErrOddLength}, + {input: "2", wantErr: ErrOddLength}, + {input: "4444", wantErr: errors.New("hex string has length 4, want 8 for x")}, + {input: "4444", wantErr: errors.New("hex string has length 4, want 8 for x")}, + // check that output is not modified for partially correct input + {input: "444444gg", wantErr: ErrSyntax, want: []byte{0, 0, 0, 0}}, + {input: "0x444444gg", wantErr: ErrSyntax, want: []byte{0, 0, 0, 0}}, + // valid inputs + {input: "44444444", want: []byte{0x44, 0x44, 0x44, 0x44}}, + {input: "0x44444444", want: []byte{0x44, 0x44, 0x44, 0x44}}, + } + + for _, test := range tests { + out := make([]byte, 4) + err := UnmarshalFixedUnprefixedText("x", []byte(test.input), out) + switch { + case err == nil && test.wantErr != nil: + t.Errorf("%q: got no error, expected %q", test.input, test.wantErr) + case err != nil && test.wantErr == nil: + t.Errorf("%q: unexpected error %q", test.input, err) + case err != nil && err.Error() != test.wantErr.Error(): + t.Errorf("%q: error mismatch: got %q, want %q", test.input, err, test.wantErr) + } + if test.want != nil && !bytes.Equal(out, test.want) { + t.Errorf("%q: output mismatch: got %x, want %x", test.input, out, test.want) + } + } +} From d42a56afc53cf1d12dc1b9089f0ddce2c9155d72 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 2 Mar 2017 14:03:20 +0100 Subject: [PATCH 37/57] common: add UnprefixedHash, UnprefixedAddress --- common/types.go | 44 ++++++++++++++++++++++++++++++-------------- 1 file changed, 30 insertions(+), 14 deletions(-) diff --git a/common/types.go b/common/types.go index 9c50beb132..05288bf463 100644 --- a/common/types.go +++ b/common/types.go @@ -17,6 +17,7 @@ package common import ( + "encoding/hex" "fmt" "math/big" "math/rand" @@ -30,13 +31,8 @@ const ( AddressLength = 20 ) -type ( - // Hash represents the 32 byte Keccak256 hash of arbitrary data. - Hash [HashLength]byte - - // Address represents the 20 byte address of an Ethereum account. - Address [AddressLength]byte -) +// Hash represents the 32 byte Keccak256 hash of arbitrary data. +type Hash [HashLength]byte func BytesToHash(b []byte) Hash { var h Hash @@ -113,7 +109,24 @@ func EmptyHash(h Hash) bool { return h == Hash{} } +// UnprefixedHash allows marshaling a Hash without 0x prefix. +type UnprefixedHash Hash + +// UnmarshalText decodes the hash from hex. The 0x prefix is optional. +func (h *UnprefixedHash) UnmarshalText(input []byte) error { + return hexutil.UnmarshalFixedUnprefixedText("UnprefixedHash", input, h[:]) +} + +// MarshalText encodes the hash as hex. +func (h UnprefixedHash) MarshalText() ([]byte, error) { + return []byte(hex.EncodeToString(h[:])), nil +} + /////////// Address + +// Address represents the 20 byte address of an Ethereum account. +type Address [AddressLength]byte + func BytesToAddress(b []byte) Address { var a Address a.SetBytes(b) @@ -181,12 +194,15 @@ func (a *Address) UnmarshalText(input []byte) error { return hexutil.UnmarshalFixedText("Address", input, a[:]) } -// PP Pretty Prints a byte slice in the following format: -// hex(value[:4])...(hex[len(value)-4:]) -func PP(value []byte) string { - if len(value) <= 8 { - return Bytes2Hex(value) - } +// UnprefixedHash allows marshaling an Address without 0x prefix. +type UnprefixedAddress Address - return fmt.Sprintf("%x...%x", value[:4], value[len(value)-4]) +// UnmarshalText decodes the address from hex. The 0x prefix is optional. +func (a *UnprefixedAddress) UnmarshalText(input []byte) error { + return hexutil.UnmarshalFixedUnprefixedText("UnprefixedAddress", input, a[:]) +} + +// MarshalText encodes the address as hex. +func (a UnprefixedAddress) MarshalText() ([]byte, error) { + return []byte(hex.EncodeToString(a[:])), nil } From 0f4b75bea27b1c39f1dd5c42c3ef472b98f4a7df Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 7 Mar 2017 23:20:21 +0100 Subject: [PATCH 38/57] core/state: expose CommitTo --- core/state/statedb.go | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/core/state/statedb.go b/core/state/statedb.go index cfd033bd8a..0c72fc6b07 100644 --- a/core/state/statedb.go +++ b/core/state/statedb.go @@ -611,7 +611,7 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (root common.Hash, err error) // the root hash stored in a block. func (s *StateDB) CommitBatch(deleteEmptyObjects bool) (root common.Hash, batch ethdb.Batch) { batch = s.db.NewBatch() - root, _ = s.commit(batch, deleteEmptyObjects) + root, _ = s.CommitTo(batch, deleteEmptyObjects) log.Debug("Trie cache stats after commit", "misses", trie.CacheMisses(), "unloads", trie.CacheUnloads()) return root, batch @@ -623,7 +623,8 @@ func (s *StateDB) clearJournalAndRefund() { s.refund = new(big.Int) } -func (s *StateDB) commit(dbw trie.DatabaseWriter, deleteEmptyObjects bool) (root common.Hash, err error) { +// CommitTo writes the state to the given database. +func (s *StateDB) CommitTo(dbw trie.DatabaseWriter, deleteEmptyObjects bool) (root common.Hash, err error) { defer s.clearJournalAndRefund() // Commit objects to the trie. From 67c47459f283842bbf0063d9a1dc078251d6f433 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Sat, 18 Mar 2017 14:05:32 +0100 Subject: [PATCH 39/57] core/types: handle nil ChainId in NewEIP155Signer All uses of ChainConfig.ChainId eventually end up in NewEIP155Signer. This fixes the case where users forget to set the ChainId in their config. --- core/types/transaction_signing.go | 3 +++ 1 file changed, 3 insertions(+) diff --git a/core/types/transaction_signing.go b/core/types/transaction_signing.go index e7eb7c5f0c..b4bab0aad7 100644 --- a/core/types/transaction_signing.go +++ b/core/types/transaction_signing.go @@ -112,6 +112,9 @@ type EIP155Signer struct { } func NewEIP155Signer(chainId *big.Int) EIP155Signer { + if chainId == nil { + chainId = new(big.Int) + } return EIP155Signer{ chainId: chainId, chainIdMul: new(big.Int).Mul(chainId, big.NewInt(2)), From 37dd9086ec491900311fc39837f4a62ef5fd3a4a Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 2 Mar 2017 14:03:33 +0100 Subject: [PATCH 40/57] core: refactor genesis handling This commit solves several issues concerning the genesis block: * Genesis/ChainConfig loading was handled by cmd/geth code. This left library users in the cold. They could specify a JSON-encoded string and overwrite the config, but didn't get any of the additional checks performed by geth. * Decoding and writing of genesis JSON was conflated in WriteGenesisBlock. This made it a lot harder to embed the genesis block into the forthcoming config file loader. This commit changes things so there is a single Genesis type that represents genesis blocks. All uses of Write*Genesis* are changed to use the new type instead. * If the chain config supplied by the user was incompatible with the current chain (i.e. the chain had already advanced beyond a scheduled fork), it got overwritten. This is not an issue in practice because previous forks have always had the highest total difficulty. It might matter in the future though. The new code reverts the local chain to the point of the fork when upgrading configuration. The change to genesis block data removes compression library dependencies from package core. --- accounts/abi/bind/backends/simulated.go | 18 +- accounts/abi/bind/bind_test.go | 18 +- accounts/abi/bind/util_test.go | 5 +- cmd/geth/chaincmd.go | 14 +- cmd/utils/flags.go | 91 +---- console/console_test.go | 9 +- contracts/chequebook/cheque_test.go | 10 +- contracts/ens/ens_test.go | 2 +- contracts/release/contract_test.go | 6 +- core/bench_test.go | 12 +- core/block_validator_test.go | 33 +- core/blockchain_test.go | 351 ++++++----------- core/chain_makers.go | 34 +- core/chain_makers_test.go | 18 +- core/dao.go | 2 +- core/dao_test.go | 15 +- core/database_util_test.go | 2 +- core/default_genesis.go | 28 -- core/gen_genesis.go | 106 ++++++ core/gen_genesis_account.go | 61 +++ core/genesis.go | 388 +++++++++++-------- core/genesis_alloc.go | 25 ++ core/genesis_test.go | 161 ++++++++ core/headerchain.go | 7 +- core/mkalloc.go | 85 +++++ core/tx_pool_test.go | 10 +- core/types/transaction.go | 14 - eth/backend.go | 87 ++--- eth/backend_test.go | 2 +- eth/filters/filter_system_test.go | 11 +- eth/filters/filter_test.go | 6 +- eth/handler_test.go | 13 +- eth/helper_test.go | 24 +- les/backend.go | 22 +- les/helper_test.go | 25 +- les/server.go | 2 +- light/lightchain.go | 6 +- light/lightchain_test.go | 83 ++-- light/odr_test.go | 5 +- light/txpool_test.go | 5 +- mobile/geth.go | 50 ++- mobile/params.go | 8 +- params/config.go | 212 +++++++---- params/config_test.go | 81 ++++ params/dao.go | 487 ++++++------------------ 45 files changed, 1379 insertions(+), 1275 deletions(-) delete mode 100644 core/default_genesis.go create mode 100644 core/gen_genesis.go create mode 100644 core/gen_genesis_account.go create mode 100644 core/genesis_alloc.go create mode 100644 core/genesis_test.go create mode 100644 core/mkalloc.go create mode 100644 params/config_test.go diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go index 2f5719c783..3d7e96bf60 100644 --- a/accounts/abi/bind/backends/simulated.go +++ b/accounts/abi/bind/backends/simulated.go @@ -37,9 +37,6 @@ import ( "github.com/ethereum/go-ethereum/pow" ) -// Default chain configuration which sets homestead phase at block 0 (i.e. no frontier) -var chainConfig = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), EIP150Block: new(big.Int), EIP158Block: new(big.Int)} - // This nil assignment ensures compile time that SimulatedBackend implements bind.ContractBackend. var _ bind.ContractBackend = (*SimulatedBackend)(nil) @@ -60,11 +57,12 @@ type SimulatedBackend struct { // NewSimulatedBackend creates a new binding backend using a simulated blockchain // for testing purposes. -func NewSimulatedBackend(accounts ...core.GenesisAccount) *SimulatedBackend { +func NewSimulatedBackend(alloc core.GenesisAlloc) *SimulatedBackend { database, _ := ethdb.NewMemDatabase() - core.WriteGenesisBlockForTesting(database, accounts...) - blockchain, _ := core.NewBlockChain(database, chainConfig, new(pow.FakePow), new(event.TypeMux), vm.Config{}) - backend := &SimulatedBackend{database: database, blockchain: blockchain} + genesis := core.Genesis{Config: params.AllProtocolChanges, Alloc: alloc} + genesis.MustCommit(database) + blockchain, _ := core.NewBlockChain(database, genesis.Config, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + backend := &SimulatedBackend{database: database, blockchain: blockchain, config: genesis.Config} backend.rollback() return backend } @@ -90,7 +88,7 @@ func (b *SimulatedBackend) Rollback() { } func (b *SimulatedBackend) rollback() { - blocks, _ := core.GenerateChain(chainConfig, b.blockchain.CurrentBlock(), b.database, 1, func(int, *core.BlockGen) {}) + blocks, _ := core.GenerateChain(b.config, b.blockchain.CurrentBlock(), b.database, 1, func(int, *core.BlockGen) {}) b.pendingBlock = blocks[0] b.pendingState, _ = state.New(b.pendingBlock.Root(), b.database) } @@ -253,7 +251,7 @@ func (b *SimulatedBackend) callContract(ctx context.Context, call ethereum.CallM evmContext := core.NewEVMContext(msg, block.Header(), b.blockchain) // Create a new environment which holds all relevant information // about the transaction and calling mechanisms. - vmenv := vm.NewEVM(evmContext, statedb, chainConfig, vm.Config{}) + vmenv := vm.NewEVM(evmContext, statedb, b.config, vm.Config{}) gaspool := new(core.GasPool).AddGas(math.MaxBig256) ret, gasUsed, _, err := core.NewStateTransition(vmenv, msg, gaspool).TransitionDb() return ret, gasUsed, err @@ -274,7 +272,7 @@ func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transa panic(fmt.Errorf("invalid transaction nonce: got %d, want %d", tx.Nonce(), nonce)) } - blocks, _ := core.GenerateChain(chainConfig, b.blockchain.CurrentBlock(), b.database, 1, func(number int, block *core.BlockGen) { + blocks, _ := core.GenerateChain(b.config, b.blockchain.CurrentBlock(), b.database, 1, func(number int, block *core.BlockGen) { for _, tx := range b.pendingBlock.Transactions() { block.AddTx(tx) } diff --git a/accounts/abi/bind/bind_test.go b/accounts/abi/bind/bind_test.go index 8ac4aa44e5..8ea3eca415 100644 --- a/accounts/abi/bind/bind_test.go +++ b/accounts/abi/bind/bind_test.go @@ -169,7 +169,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy an interaction tester contract and call a transaction on it _, _, interactor, err := DeployInteractor(auth, sim, "Deploy string") @@ -210,7 +210,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy a tuple tester contract and execute a structured call on it _, _, getter, err := DeployGetter(auth, sim) @@ -242,7 +242,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy a tuple tester contract and execute a structured call on it _, _, tupler, err := DeployTupler(auth, sim) @@ -284,7 +284,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy a slice tester contract and execute a n array call on it _, _, slicer, err := DeploySlicer(auth, sim) @@ -318,7 +318,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy a default method invoker contract and execute its default method _, _, defaulter, err := DeployDefaulter(auth, sim) @@ -351,7 +351,7 @@ var bindTests = []struct { `[{"constant":true,"inputs":[],"name":"String","outputs":[{"name":"","type":"string"}],"type":"function"}]`, ` // Create a simulator and wrap a non-deployed contract - sim := backends.NewSimulatedBackend() + sim := backends.NewSimulatedBackend(nil) nonexistent, err := NewNonExistent(common.Address{}, sim) if err != nil { @@ -387,7 +387,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy a funky gas pattern contract _, _, limiter, err := DeployFunkyGasPattern(auth, sim) @@ -423,7 +423,7 @@ var bindTests = []struct { // Generate a new random account and a funded simulator key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - sim := backends.NewSimulatedBackend(core.GenesisAccount{Address: auth.From, Balance: big.NewInt(10000000000)}) + sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}) // Deploy a sender tester contract and execute a structured call on it _, _, callfrom, err := DeployCallFrom(auth, sim) @@ -458,7 +458,7 @@ func TestBindings(t *testing.T) { t.Skip("go sdk not found for testing") } // Skip the test if the go-ethereum sources are symlinked (https://github.com/golang/go/issues/14845) - linkTestCode := fmt.Sprintf("package linktest\nfunc CheckSymlinks(){\nfmt.Println(backends.NewSimulatedBackend())\n}") + linkTestCode := fmt.Sprintf("package linktest\nfunc CheckSymlinks(){\nfmt.Println(backends.NewSimulatedBackend(nil))\n}") linkTestDeps, err := imports.Process("", []byte(linkTestCode), nil) if err != nil { t.Fatalf("failed check for goimports symlink bug: %v", err) diff --git a/accounts/abi/bind/util_test.go b/accounts/abi/bind/util_test.go index b37a69cfca..d24aa721e5 100644 --- a/accounts/abi/bind/util_test.go +++ b/accounts/abi/bind/util_test.go @@ -53,9 +53,8 @@ var waitDeployedTests = map[string]struct { func TestWaitDeployed(t *testing.T) { for name, test := range waitDeployedTests { - backend := backends.NewSimulatedBackend(core.GenesisAccount{ - Address: crypto.PubkeyToAddress(testKey.PublicKey), - Balance: big.NewInt(10000000000), + backend := backends.NewSimulatedBackend(core.GenesisAlloc{ + crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(10000000000)}, }) // Create the transaction. diff --git a/cmd/geth/chaincmd.go b/cmd/geth/chaincmd.go index 6ea474a9ce..2d121a611b 100644 --- a/cmd/geth/chaincmd.go +++ b/cmd/geth/chaincmd.go @@ -17,6 +17,7 @@ package main import ( + "encoding/json" "fmt" "os" "runtime" @@ -110,17 +111,22 @@ func initGenesis(ctx *cli.Context) error { stack := makeFullNode(ctx) chaindb := utils.MakeChainDatabase(ctx, stack) - genesisFile, err := os.Open(genesisPath) + file, err := os.Open(genesisPath) if err != nil { utils.Fatalf("failed to read genesis file: %v", err) } - defer genesisFile.Close() + defer file.Close() - block, err := core.WriteGenesisBlock(chaindb, genesisFile) + genesis := new(core.Genesis) + if err := json.NewDecoder(file).Decode(genesis); err != nil { + utils.Fatalf("invalid genesis file: %v", err) + } + + _, hash, err := core.SetupGenesisBlock(chaindb, genesis) if err != nil { utils.Fatalf("failed to write genesis block: %v", err) } - log.Info("Successfully wrote genesis state", "hash", block.Hash()) + log.Info("Successfully wrote genesis state", "hash", hash) return nil } diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 38c90d801a..478e08834b 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -786,7 +786,6 @@ func RegisterEthService(ctx *cli.Context, stack *node.Node, extra []byte) { ethConf := ð.Config{ Etherbase: MakeEtherbase(ks, ctx), - ChainConfig: MakeChainConfig(ctx, stack), FastSync: ctx.GlobalBool(FastSyncFlag.Name), LightMode: ctx.GlobalBool(LightModeFlag.Name), LightServ: ctx.GlobalInt(LightServFlag.Name), @@ -822,7 +821,6 @@ func RegisterEthService(ctx *cli.Context, stack *node.Node, extra []byte) { ethConf.NetworkId = 3 } ethConf.Genesis = core.DefaultTestnetGenesisBlock() - case ctx.GlobalBool(DevModeFlag.Name): ethConf.Genesis = core.DevGenesisBlock() if !ctx.GlobalIsSet(GasPriceFlag.Name) { @@ -884,67 +882,6 @@ func SetupNetwork(ctx *cli.Context) { params.TargetGasLimit = new(big.Int).SetUint64(ctx.GlobalUint64(TargetGasLimitFlag.Name)) } -// MakeChainConfig reads the chain configuration from the database in ctx.Datadir. -func MakeChainConfig(ctx *cli.Context, stack *node.Node) *params.ChainConfig { - db := MakeChainDatabase(ctx, stack) - defer db.Close() - - return MakeChainConfigFromDb(ctx, db) -} - -// MakeChainConfigFromDb reads the chain configuration from the given database. -func MakeChainConfigFromDb(ctx *cli.Context, db ethdb.Database) *params.ChainConfig { - // If the chain is already initialized, use any existing chain configs - config := new(params.ChainConfig) - - genesis := core.GetBlock(db, core.GetCanonicalHash(db, 0), 0) - if genesis != nil { - storedConfig, err := core.GetChainConfig(db, genesis.Hash()) - switch err { - case nil: - config = storedConfig - case core.ChainConfigNotFoundErr: - // No configs found, use empty, will populate below - default: - Fatalf("Could not make chain configuration: %v", err) - } - } - // set chain id in case it's zero. - if config.ChainId == nil { - config.ChainId = new(big.Int) - } - // Check whether we are allowed to set default config params or not: - // - If no genesis is set, we're running either mainnet or testnet (private nets use `geth init`) - // - If a genesis is already set, ensure we have a configuration for it (mainnet or testnet) - defaults := genesis == nil || - (genesis.Hash() == params.MainNetGenesisHash && !ctx.GlobalBool(TestNetFlag.Name)) || - (genesis.Hash() == params.TestNetGenesisHash && ctx.GlobalBool(TestNetFlag.Name)) - - if defaults { - if ctx.GlobalBool(TestNetFlag.Name) { - config = params.TestnetChainConfig - } else if ctx.GlobalBool(DevModeFlag.Name) { - config = params.AllProtocolChanges - } else { - // Homestead fork - config.HomesteadBlock = params.MainNetHomesteadBlock - // DAO fork - config.DAOForkBlock = params.MainNetDAOForkBlock - config.DAOForkSupport = true - - // DoS reprice fork - config.EIP150Block = params.MainNetHomesteadGasRepriceBlock - config.EIP150Hash = params.MainNetHomesteadGasRepriceHash - - // DoS state cleanup fork - config.EIP155Block = params.MainNetSpuriousDragon - config.EIP158Block = params.MainNetSpuriousDragon - config.ChainId = params.MainNetChainID - } - } - return config -} - func ChainDbName(ctx *cli.Context) string { if ctx.GlobalBool(LightModeFlag.Name) { return "lightchaindata" @@ -968,26 +905,34 @@ func MakeChainDatabase(ctx *cli.Context, stack *node.Node) ethdb.Database { return chainDb } +func MakeGenesis(ctx *cli.Context) *core.Genesis { + var genesis *core.Genesis + switch { + case ctx.GlobalBool(TestNetFlag.Name): + genesis = core.DefaultTestnetGenesisBlock() + case ctx.GlobalBool(DevModeFlag.Name): + genesis = core.DevGenesisBlock() + } + return genesis +} + // MakeChain creates a chain manager from set command line flags. func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chainDb ethdb.Database) { var err error chainDb = MakeChainDatabase(ctx, stack) - if ctx.GlobalBool(TestNetFlag.Name) { - _, err := core.WriteTestNetGenesisBlock(chainDb) - if err != nil { - Fatalf("Failed to write testnet genesis: %v", err) - } - } - chainConfig := MakeChainConfigFromDb(ctx, chainDb) - seal := pow.PoW(pow.FakePow{}) if !ctx.GlobalBool(FakePoWFlag.Name) { seal = pow.NewFullEthash("", 1, 0, "", 1, 0) } - chain, err = core.NewBlockChain(chainDb, chainConfig, seal, new(event.TypeMux), vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)}) + config, _, err := core.SetupGenesisBlock(chainDb, MakeGenesis(ctx)) if err != nil { - Fatalf("Could not start chainmanager: %v", err) + Fatalf("%v", err) + } + vmcfg := vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)} + chain, err = core.NewBlockChain(chainDb, config, seal, new(event.TypeMux), vmcfg) + if err != nil { + Fatalf("Can't create BlockChain: %v", err) } return chain, chainDb } diff --git a/console/console_test.go b/console/console_test.go index d5010b907d..b5cff2c4d8 100644 --- a/console/console_test.go +++ b/console/console_test.go @@ -21,17 +21,16 @@ import ( "errors" "fmt" "io/ioutil" - "math/big" "os" "strings" "testing" "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/internal/jsre" "github.com/ethereum/go-ethereum/node" - "github.com/ethereum/go-ethereum/params" ) const ( @@ -97,9 +96,9 @@ func newTester(t *testing.T, confOverride func(*eth.Config)) *tester { t.Fatalf("failed to create node: %v", err) } ethConf := ð.Config{ - ChainConfig: ¶ms.ChainConfig{HomesteadBlock: new(big.Int), ChainId: new(big.Int)}, - Etherbase: common.HexToAddress(testAddress), - PowTest: true, + Genesis: core.DevGenesisBlock(), + Etherbase: common.HexToAddress(testAddress), + PowTest: true, } if confOverride != nil { confOverride(ethConf) diff --git a/contracts/chequebook/cheque_test.go b/contracts/chequebook/cheque_test.go index 4029fd5495..d5b3430246 100644 --- a/contracts/chequebook/cheque_test.go +++ b/contracts/chequebook/cheque_test.go @@ -42,11 +42,11 @@ var ( ) func newTestBackend() *backends.SimulatedBackend { - return backends.NewSimulatedBackend( - core.GenesisAccount{Address: addr0, Balance: big.NewInt(1000000000)}, - core.GenesisAccount{Address: addr1, Balance: big.NewInt(1000000000)}, - core.GenesisAccount{Address: addr2, Balance: big.NewInt(1000000000)}, - ) + return backends.NewSimulatedBackend(core.GenesisAlloc{ + addr0: {Balance: big.NewInt(1000000000)}, + addr1: {Balance: big.NewInt(1000000000)}, + addr2: {Balance: big.NewInt(1000000000)}, + }) } func deploy(prvKey *ecdsa.PrivateKey, amount *big.Int, backend *backends.SimulatedBackend) (common.Address, error) { diff --git a/contracts/ens/ens_test.go b/contracts/ens/ens_test.go index 373ce2e30f..5faa9b1ad4 100644 --- a/contracts/ens/ens_test.go +++ b/contracts/ens/ens_test.go @@ -34,7 +34,7 @@ var ( ) func TestENS(t *testing.T) { - contractBackend := backends.NewSimulatedBackend(core.GenesisAccount{Address: addr, Balance: big.NewInt(1000000000)}) + contractBackend := backends.NewSimulatedBackend(core.GenesisAlloc{addr: {Balance: big.NewInt(1000000000)}}) transactOpts := bind.NewKeyedTransactor(key) // Workaround for bug estimating gas in the call to Register transactOpts.GasLimit = big.NewInt(1000000) diff --git a/contracts/release/contract_test.go b/contracts/release/contract_test.go index 11a039992b..348e9aabef 100644 --- a/contracts/release/contract_test.go +++ b/contracts/release/contract_test.go @@ -35,11 +35,11 @@ func setupReleaseTest(t *testing.T, prefund ...*ecdsa.PrivateKey) (*ecdsa.Privat key, _ := crypto.GenerateKey() auth := bind.NewKeyedTransactor(key) - accounts := []core.GenesisAccount{{Address: auth.From, Balance: big.NewInt(10000000000)}} + alloc := core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}} for _, key := range prefund { - accounts = append(accounts, core.GenesisAccount{Address: crypto.PubkeyToAddress(key.PublicKey), Balance: big.NewInt(10000000000)}) + alloc[crypto.PubkeyToAddress(key.PublicKey)] = core.GenesisAccount{Balance: big.NewInt(10000000000)} } - sim := backends.NewSimulatedBackend(accounts...) + sim := backends.NewSimulatedBackend(alloc) // Deploy a version oracle contract, commit and return _, _, oracle, err := DeployReleaseOracle(auth, sim, []common.Address{auth.From}) diff --git a/core/bench_test.go b/core/bench_test.go index 42d50a7b12..a154ccbb12 100644 --- a/core/bench_test.go +++ b/core/bench_test.go @@ -166,13 +166,17 @@ func benchInsertChain(b *testing.B, disk bool, gen func(int, *BlockGen)) { // Generate a chain of b.N blocks using the supplied block // generator function. - genesis := WriteGenesisBlockForTesting(db, GenesisAccount{benchRootAddr, benchRootFunds}) - chain, _ := GenerateChain(params.TestChainConfig, genesis, db, b.N, gen) + gspec := Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{benchRootAddr: {Balance: benchRootFunds}}, + } + genesis := gspec.MustCommit(db) + chain, _ := GenerateChain(gspec.Config, genesis, db, b.N, gen) // Time the insertion of the new chain. // State and blocks are stored in the same DB. evmux := new(event.TypeMux) - chainman, _ := NewBlockChain(db, ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, pow.FakePow{}, evmux, vm.Config{}) + chainman, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) defer chainman.Stop() b.ReportAllocs() b.ResetTimer() @@ -282,7 +286,7 @@ func benchReadChain(b *testing.B, full bool, count uint64) { if err != nil { b.Fatalf("error opening database at %v: %v", dir, err) } - chain, err := NewBlockChain(db, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + chain, err := NewBlockChain(db, params.TestChainConfig, pow.FakePow{}, new(event.TypeMux), vm.Config{}) if err != nil { b.Fatalf("error creating chain: %v", err) } diff --git a/core/block_validator_test.go b/core/block_validator_test.go index c13aa83db2..a07dd9e51b 100644 --- a/core/block_validator_test.go +++ b/core/block_validator_test.go @@ -17,51 +17,36 @@ package core import ( - "fmt" "math/big" "testing" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" ) -func testChainConfig() *params.ChainConfig { - return params.TestChainConfig - //return ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0)} -} - -func proc() (Validator, *BlockChain) { - db, _ := ethdb.NewMemDatabase() - var mux event.TypeMux - - WriteTestNetGenesisBlock(db) - blockchain, err := NewBlockChain(db, testChainConfig(), pow.NewTestEthash(), &mux, vm.Config{}) - if err != nil { - fmt.Println(err) +func testGenesis(account common.Address, balance *big.Int) *Genesis { + return &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{account: {Balance: balance}}, } - return blockchain.validator, blockchain } func TestNumber(t *testing.T) { - _, chain := proc() - + chain := newTestBlockChain() statedb, _ := state.New(chain.Genesis().Root(), chain.chainDb) - cfg := testChainConfig() - header := makeHeader(cfg, chain.Genesis(), statedb) + header := makeHeader(chain.config, chain.Genesis(), statedb) header.Number = big.NewInt(3) - err := ValidateHeader(cfg, pow.FakePow{}, header, chain.Genesis().Header(), false, false) + err := ValidateHeader(chain.config, pow.FakePow{}, header, chain.Genesis().Header(), false, false) if err != BlockNumberErr { t.Errorf("expected block number error, got %q", err) } - header = makeHeader(cfg, chain.Genesis(), statedb) - err = ValidateHeader(cfg, pow.FakePow{}, header, chain.Genesis().Header(), false, false) + header = makeHeader(chain.config, chain.Genesis(), statedb) + err = ValidateHeader(chain.config, pow.FakePow{}, header, chain.Genesis().Header(), false, false) if err == BlockNumberErr { t.Errorf("didn't expect block number error") } diff --git a/core/blockchain_test.go b/core/blockchain_test.go index 2f06f0735b..3da133a9ea 100644 --- a/core/blockchain_test.go +++ b/core/blockchain_test.go @@ -20,10 +20,6 @@ import ( "fmt" "math/big" "math/rand" - "os" - "path/filepath" - "runtime" - "strconv" "testing" "time" @@ -36,24 +32,21 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" - "github.com/ethereum/go-ethereum/rlp" - "github.com/hashicorp/golang-lru" ) -func init() { - runtime.GOMAXPROCS(runtime.NumCPU()) -} - -func theBlockChain(db ethdb.Database, t *testing.T) *BlockChain { - var eventMux event.TypeMux - WriteTestNetGenesisBlock(db) - blockchain, err := NewBlockChain(db, testChainConfig(), pow.NewTestEthash(), &eventMux, vm.Config{}) - if err != nil { - t.Error("failed creating blockchain:", err) - t.FailNow() - return nil +// newTestBlockChain creates a blockchain without validation. +func newTestBlockChain() *BlockChain { + db, _ := ethdb.NewMemDatabase() + gspec := &Genesis{ + Config: params.TestChainConfig, + Difficulty: big.NewInt(1), } - + gspec.MustCommit(db) + blockchain, err := NewBlockChain(db, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + if err != nil { + panic(err) + } + blockchain.SetValidator(bproc{}) return blockchain } @@ -171,21 +164,6 @@ func testHeaderChainImport(chain []*types.Header, blockchain *BlockChain) error return nil } -func loadChain(fn string, t *testing.T) (types.Blocks, error) { - fh, err := os.OpenFile(filepath.Join("..", "_data", fn), os.O_RDONLY, os.ModePerm) - if err != nil { - return nil, err - } - defer fh.Close() - - var chain types.Blocks - if err := rlp.Decode(fh, &chain); err != nil { - return nil, err - } - - return chain, nil -} - func insertChain(done chan bool, blockchain *BlockChain, chain types.Blocks, t *testing.T) { _, err := blockchain.InsertChain(chain) if err != nil { @@ -196,12 +174,10 @@ func insertChain(done chan bool, blockchain *BlockChain, chain types.Blocks, t * } func TestLastBlock(t *testing.T) { - db, _ := ethdb.NewMemDatabase() - - bchain := theBlockChain(db, t) - block := makeBlockChain(bchain.CurrentBlock(), 1, db, 0)[0] + bchain := newTestBlockChain() + block := makeBlockChain(bchain.CurrentBlock(), 1, bchain.chainDb, 0)[0] bchain.insert(block) - if block.Hash() != GetHeadBlockHash(db) { + if block.Hash() != GetHeadBlockHash(bchain.chainDb) { t.Errorf("Write/Get HeadBlockHash failed") } } @@ -340,88 +316,6 @@ func testBrokenChain(t *testing.T, full bool) { } } -func TestChainInsertions(t *testing.T) { - t.Skip("Skipped: outdated test files") - - db, _ := ethdb.NewMemDatabase() - - chain1, err := loadChain("valid1", t) - if err != nil { - fmt.Println(err) - t.FailNow() - } - - chain2, err := loadChain("valid2", t) - if err != nil { - fmt.Println(err) - t.FailNow() - } - - blockchain := theBlockChain(db, t) - - const max = 2 - done := make(chan bool, max) - - go insertChain(done, blockchain, chain1, t) - go insertChain(done, blockchain, chain2, t) - - for i := 0; i < max; i++ { - <-done - } - - if chain2[len(chain2)-1].Hash() != blockchain.CurrentBlock().Hash() { - t.Error("chain2 is canonical and shouldn't be") - } - - if chain1[len(chain1)-1].Hash() != blockchain.CurrentBlock().Hash() { - t.Error("chain1 isn't canonical and should be") - } -} - -func TestChainMultipleInsertions(t *testing.T) { - t.Skip("Skipped: outdated test files") - - db, _ := ethdb.NewMemDatabase() - - const max = 4 - chains := make([]types.Blocks, max) - var longest int - for i := 0; i < max; i++ { - var err error - name := "valid" + strconv.Itoa(i+1) - chains[i], err = loadChain(name, t) - if len(chains[i]) >= len(chains[longest]) { - longest = i - } - fmt.Println("loaded", name, "with a length of", len(chains[i])) - if err != nil { - fmt.Println(err) - t.FailNow() - } - } - - blockchain := theBlockChain(db, t) - - done := make(chan bool, max) - for i, chain := range chains { - // XXX the go routine would otherwise reference the same (chain[3]) variable and fail - i := i - chain := chain - go func() { - insertChain(done, blockchain, chain, t) - fmt.Println(i, "done") - }() - } - - for i := 0; i < max; i++ { - <-done - } - - if chains[longest][len(chains[longest])-1].Hash() != blockchain.CurrentBlock().Hash() { - t.Error("Invalid canonical chain") - } -} - type bproc struct{} func (bproc) ValidateBlock(*types.Block) error { return nil } @@ -452,6 +346,7 @@ func makeBlockChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.B UncleHash: types.EmptyUncleHash, TxHash: types.EmptyRootHash, ReceiptHash: types.EmptyRootHash, + Time: big.NewInt(int64(i) + 1), } if i == 0 { header.ParentHash = genesis.Hash() @@ -464,29 +359,6 @@ func makeBlockChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.B return chain } -func chm(genesis *types.Block, db ethdb.Database) *BlockChain { - var eventMux event.TypeMux - bc := &BlockChain{ - chainDb: db, - genesisBlock: genesis, - eventMux: &eventMux, - pow: pow.FakePow{}, - config: testChainConfig(), - } - valFn := func() HeaderValidator { return bc.Validator() } - bc.hc, _ = NewHeaderChain(db, testChainConfig(), valFn, bc.getProcInterrupt) - bc.bodyCache, _ = lru.New(100) - bc.bodyRLPCache, _ = lru.New(100) - bc.blockCache, _ = lru.New(100) - bc.futureBlocks, _ = lru.New(100) - bc.badBlocks, _ = lru.New(10) - bc.SetValidator(bproc{}) - bc.SetProcessor(bproc{}) - bc.ResetWithGenesisBlock(genesis) - - return bc -} - // Tests that reorganising a long difficult chain after a short easy one // overwrites the canonical numbers and links in the database. func TestReorgLongHeaders(t *testing.T) { testReorgLong(t, false) } @@ -506,18 +378,15 @@ func testReorgShort(t *testing.T, full bool) { } func testReorg(t *testing.T, first, second []int, td int64, full bool) { - // Create a pristine block chain - db, _ := ethdb.NewMemDatabase() - genesis, _ := WriteTestNetGenesisBlock(db) - bc := chm(genesis, db) + bc := newTestBlockChain() // Insert an easy and a difficult chain afterwards if full { - bc.InsertChain(makeBlockChainWithDiff(genesis, first, 11)) - bc.InsertChain(makeBlockChainWithDiff(genesis, second, 22)) + bc.InsertChain(makeBlockChainWithDiff(bc.genesisBlock, first, 11)) + bc.InsertChain(makeBlockChainWithDiff(bc.genesisBlock, second, 22)) } else { - bc.InsertHeaderChain(makeHeaderChainWithDiff(genesis, first, 11), 1) - bc.InsertHeaderChain(makeHeaderChainWithDiff(genesis, second, 22), 1) + bc.InsertHeaderChain(makeHeaderChainWithDiff(bc.genesisBlock, first, 11), 1) + bc.InsertHeaderChain(makeHeaderChainWithDiff(bc.genesisBlock, second, 22), 1) } // Check that the chain is valid number and link wise if full { @@ -536,7 +405,7 @@ func testReorg(t *testing.T, first, second []int, td int64, full bool) { } } // Make sure the chain total difficulty is the correct one - want := new(big.Int).Add(genesis.Difficulty(), big.NewInt(td)) + want := new(big.Int).Add(bc.genesisBlock.Difficulty(), big.NewInt(td)) if full { if have := bc.GetTdByHash(bc.CurrentBlock().Hash()); have.Cmp(want) != 0 { t.Errorf("total difficulty mismatch: have %v, want %v", have, want) @@ -553,19 +422,16 @@ func TestBadHeaderHashes(t *testing.T) { testBadHashes(t, false) } func TestBadBlockHashes(t *testing.T) { testBadHashes(t, true) } func testBadHashes(t *testing.T, full bool) { - // Create a pristine block chain - db, _ := ethdb.NewMemDatabase() - genesis, _ := WriteTestNetGenesisBlock(db) - bc := chm(genesis, db) + bc := newTestBlockChain() // Create a chain, ban a hash and try to import var err error if full { - blocks := makeBlockChainWithDiff(genesis, []int{1, 2, 4}, 10) + blocks := makeBlockChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10) BadHashes[blocks[2].Header().Hash()] = true _, err = bc.InsertChain(blocks) } else { - headers := makeHeaderChainWithDiff(genesis, []int{1, 2, 4}, 10) + headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10) BadHashes[headers[2].Hash()] = true _, err = bc.InsertHeaderChain(headers, 1) } @@ -580,14 +446,11 @@ func TestReorgBadHeaderHashes(t *testing.T) { testReorgBadHashes(t, false) } func TestReorgBadBlockHashes(t *testing.T) { testReorgBadHashes(t, true) } func testReorgBadHashes(t *testing.T, full bool) { - // Create a pristine block chain - db, _ := ethdb.NewMemDatabase() - genesis, _ := WriteTestNetGenesisBlock(db) - bc := chm(genesis, db) + bc := newTestBlockChain() // Create a chain, import and ban afterwards - headers := makeHeaderChainWithDiff(genesis, []int{1, 2, 3, 4}, 10) - blocks := makeBlockChainWithDiff(genesis, []int{1, 2, 3, 4}, 10) + headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 3, 4}, 10) + blocks := makeBlockChainWithDiff(bc.genesisBlock, []int{1, 2, 3, 4}, 10) if full { if _, err := bc.InsertChain(blocks); err != nil { @@ -608,8 +471,9 @@ func testReorgBadHashes(t *testing.T, full bool) { BadHashes[headers[3].Hash()] = true defer func() { delete(BadHashes, headers[3].Hash()) }() } - // Create a new chain manager and check it rolled back the state - ncm, err := NewBlockChain(db, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + + // Create a new BlockChain and check that it rolled back the state. + ncm, err := NewBlockChain(bc.chainDb, bc.config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) if err != nil { t.Fatalf("failed to create new chain manager: %v", err) } @@ -663,7 +527,7 @@ func testInsertNonceError(t *testing.T, full bool) { failHash = headers[failAt].Hash() blockchain.pow = failPow{failNum} - blockchain.validator = NewBlockValidator(testChainConfig(), blockchain, failPow{failNum}) + blockchain.validator = NewBlockValidator(params.TestChainConfig, blockchain, failPow{failNum}) failRes, err = blockchain.InsertHeaderChain(headers, 1) } @@ -705,10 +569,11 @@ func TestFastVsFullChains(t *testing.T) { key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") address = crypto.PubkeyToAddress(key.PublicKey) funds = big.NewInt(1000000000) - genesis = GenesisBlockForTesting(gendb, address, funds) - signer = types.NewEIP155Signer(big.NewInt(1)) + gspec = testGenesis(address, funds) + genesis = gspec.MustCommit(gendb) + signer = types.NewEIP155Signer(gspec.Config.ChainId) ) - blocks, receipts := GenerateChain(params.TestChainConfig, genesis, gendb, 1024, func(i int, block *BlockGen) { + blocks, receipts := GenerateChain(gspec.Config, genesis, gendb, 1024, func(i int, block *BlockGen) { block.SetCoinbase(common.Address{0x00}) // If the block number is multiple of 3, send a few bonus transactions to the miner @@ -728,17 +593,17 @@ func TestFastVsFullChains(t *testing.T) { }) // Import the chain as an archive node for the comparison baseline archiveDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(archiveDb, GenesisAccount{address, funds}) - - archive, _ := NewBlockChain(archiveDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + gspec.MustCommit(archiveDb) + archive, _ := NewBlockChain(archiveDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) if n, err := archive.InsertChain(blocks); err != nil { t.Fatalf("failed to process block %d: %v", n, err) } + // Fast import the chain as a non-archive node to test fastDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(fastDb, GenesisAccount{address, funds}) - fast, _ := NewBlockChain(fastDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + gspec.MustCommit(fastDb) + fast, _ := NewBlockChain(fastDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) headers := make([]*types.Header, len(blocks)) for i, block := range blocks { @@ -788,10 +653,11 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") address = crypto.PubkeyToAddress(key.PublicKey) funds = big.NewInt(1000000000) - genesis = GenesisBlockForTesting(gendb, address, funds) + gspec = &Genesis{Config: params.TestChainConfig, Alloc: GenesisAlloc{address: {Balance: funds}}} + genesis = gspec.MustCommit(gendb) ) height := uint64(1024) - blocks, receipts := GenerateChain(params.TestChainConfig, genesis, gendb, int(height), nil) + blocks, receipts := GenerateChain(gspec.Config, genesis, gendb, int(height), nil) // Configure a subchain to roll back remove := []common.Hash{} @@ -812,9 +678,9 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { } // Import the chain as an archive node and ensure all pointers are updated archiveDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(archiveDb, GenesisAccount{address, funds}) + gspec.MustCommit(archiveDb) - archive, _ := NewBlockChain(archiveDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + archive, _ := NewBlockChain(archiveDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) if n, err := archive.InsertChain(blocks); err != nil { t.Fatalf("failed to process block %d: %v", n, err) @@ -825,8 +691,8 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Import the chain as a non-archive node and ensure all pointers are updated fastDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(fastDb, GenesisAccount{address, funds}) - fast, _ := NewBlockChain(fastDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + gspec.MustCommit(fastDb) + fast, _ := NewBlockChain(fastDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) headers := make([]*types.Header, len(blocks)) for i, block := range blocks { @@ -844,8 +710,8 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Import the chain as a light node and ensure all pointers are updated lightDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(lightDb, GenesisAccount{address, funds}) - light, _ := NewBlockChain(lightDb, testChainConfig(), pow.FakePow{}, new(event.TypeMux), vm.Config{}) + gspec.MustCommit(lightDb) + light, _ := NewBlockChain(lightDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) if n, err := light.InsertHeaderChain(headers, 1); err != nil { t.Fatalf("failed to insert header %d: %v", n, err) @@ -857,9 +723,6 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Tests that chain reorganisations handle transaction removals and reinsertions. func TestChainTxReorgs(t *testing.T) { - params.MinGasLimit = big.NewInt(125000) // Minimum the gas limit may ever be. - params.GenesisGasLimit = big.NewInt(3141592) // Gas limit of the Genesis block. - var ( key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") @@ -868,13 +731,19 @@ func TestChainTxReorgs(t *testing.T) { addr2 = crypto.PubkeyToAddress(key2.PublicKey) addr3 = crypto.PubkeyToAddress(key3.PublicKey) db, _ = ethdb.NewMemDatabase() - signer = types.NewEIP155Signer(big.NewInt(1)) - ) - genesis := WriteGenesisBlockForTesting(db, - GenesisAccount{addr1, big.NewInt(1000000)}, - GenesisAccount{addr2, big.NewInt(1000000)}, - GenesisAccount{addr3, big.NewInt(1000000)}, + gspec = &Genesis{ + Config: params.TestChainConfig, + GasLimit: 3141592, + Alloc: GenesisAlloc{ + addr1: {Balance: big.NewInt(1000000)}, + addr2: {Balance: big.NewInt(1000000)}, + addr3: {Balance: big.NewInt(1000000)}, + }, + } + genesis = gspec.MustCommit(db) + signer = types.NewEIP155Signer(gspec.Config.ChainId) ) + // Create two transactions shared between the chains: // - postponed: transaction included at a later block in the forked chain // - swapped: transaction included at the same block number in the forked chain @@ -892,7 +761,7 @@ func TestChainTxReorgs(t *testing.T) { // - futureAdd: transaction added after the reorg has already finished var pastAdd, freshAdd, futureAdd *types.Transaction - chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 3, func(i int, gen *BlockGen) { + chain, _ := GenerateChain(gspec.Config, genesis, db, 3, func(i int, gen *BlockGen) { switch i { case 0: pastDrop, _ = types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr2, big.NewInt(1000), bigTxGas, nil, nil), signer, key2) @@ -911,13 +780,13 @@ func TestChainTxReorgs(t *testing.T) { }) // Import the chain. This runs all block validation rules. evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) if i, err := blockchain.InsertChain(chain); err != nil { t.Fatalf("failed to insert original chain[%d]: %v", i, err) } // overwrite the old chain - chain, _ = GenerateChain(params.TestChainConfig, genesis, db, 5, func(i int, gen *BlockGen) { + chain, _ = GenerateChain(gspec.Config, genesis, db, 5, func(i int, gen *BlockGen) { switch i { case 0: pastAdd, _ = types.SignTx(types.NewTransaction(gen.TxNonce(addr3), addr3, big.NewInt(1000), bigTxGas, nil, nil), signer, key3) @@ -969,23 +838,20 @@ func TestChainTxReorgs(t *testing.T) { } func TestLogReorgs(t *testing.T) { - params.MinGasLimit = big.NewInt(125000) // Minimum the gas limit may ever be. - params.GenesisGasLimit = big.NewInt(3141592) // Gas limit of the Genesis block. var ( key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") addr1 = crypto.PubkeyToAddress(key1.PublicKey) db, _ = ethdb.NewMemDatabase() // this code generates a log - code = common.Hex2Bytes("60606040525b7f24ec1d3ff24c2f6ff210738839dbc339cd45a5294d85c79361016243157aae7b60405180905060405180910390a15b600a8060416000396000f360606040526008565b00") - signer = types.NewEIP155Signer(big.NewInt(1)) - ) - genesis := WriteGenesisBlockForTesting(db, - GenesisAccount{addr1, big.NewInt(10000000000000)}, + code = common.Hex2Bytes("60606040525b7f24ec1d3ff24c2f6ff210738839dbc339cd45a5294d85c79361016243157aae7b60405180905060405180910390a15b600a8060416000396000f360606040526008565b00") + gspec = &Genesis{Config: params.TestChainConfig, Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(10000000000000)}}} + genesis = gspec.MustCommit(db) + signer = types.NewEIP155Signer(gspec.Config.ChainId) ) - evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) + var evmux event.TypeMux + blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, &evmux, vm.Config{}) subs := evmux.Subscribe(RemovedLogsEvent{}) chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 2, func(i int, gen *BlockGen) { @@ -1017,19 +883,20 @@ func TestReorgSideEvent(t *testing.T) { db, _ = ethdb.NewMemDatabase() key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") addr1 = crypto.PubkeyToAddress(key1.PublicKey) - genesis = WriteGenesisBlockForTesting(db, GenesisAccount{addr1, big.NewInt(10000000000000)}) - signer = types.NewEIP155Signer(big.NewInt(1)) + gspec = testGenesis(addr1, big.NewInt(10000000000000)) + genesis = gspec.MustCommit(db) + signer = types.NewEIP155Signer(gspec.Config.ChainId) ) evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) - chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 3, func(i int, gen *BlockGen) {}) + chain, _ := GenerateChain(gspec.Config, genesis, db, 3, func(i int, gen *BlockGen) {}) if _, err := blockchain.InsertChain(chain); err != nil { t.Fatalf("failed to insert chain: %v", err) } - replacementBlocks, _ := GenerateChain(params.TestChainConfig, genesis, db, 4, func(i int, gen *BlockGen) { + replacementBlocks, _ := GenerateChain(gspec.Config, genesis, db, 4, func(i int, gen *BlockGen) { tx, err := types.SignTx(types.NewContractCreation(gen.TxNonce(addr1), new(big.Int), big.NewInt(1000000), new(big.Int), nil), signer, key1) if i == 2 { gen.OffsetTime(-1) @@ -1092,28 +959,21 @@ done: // Tests if the canonical block can be fetched from the database during chain insertion. func TestCanonicalBlockRetrieval(t *testing.T) { - var ( - db, _ = ethdb.NewMemDatabase() - genesis = WriteGenesisBlockForTesting(db) - ) - - evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, testChainConfig(), pow.FakePow{}, evmux, vm.Config{}) - - chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 10, func(i int, gen *BlockGen) {}) + bc := newTestBlockChain() + chain, _ := GenerateChain(bc.config, bc.genesisBlock, bc.chainDb, 10, func(i int, gen *BlockGen) {}) for i := range chain { go func(block *types.Block) { // try to retrieve a block by its canonical hash and see if the block data can be retrieved. for { - ch := GetCanonicalHash(db, block.NumberU64()) + ch := GetCanonicalHash(bc.chainDb, block.NumberU64()) if ch == (common.Hash{}) { continue // busy wait for canonical hash to be written } if ch != block.Hash() { t.Fatalf("unknown canonical hash, want %s, got %s", block.Hash().Hex(), ch.Hex()) } - fb := GetBlock(db, ch, block.NumberU64()) + fb := GetBlock(bc.chainDb, ch, block.NumberU64()) if fb == nil { t.Fatalf("unable to retrieve block %d for canonical hash: %s", block.NumberU64(), ch.Hex()) } @@ -1124,7 +984,7 @@ func TestCanonicalBlockRetrieval(t *testing.T) { } }(chain[i]) - blockchain.InsertChain(types.Blocks{chain[i]}) + bc.InsertChain(types.Blocks{chain[i]}) } } @@ -1136,13 +996,16 @@ func TestEIP155Transition(t *testing.T) { address = crypto.PubkeyToAddress(key.PublicKey) funds = big.NewInt(1000000000) deleteAddr = common.Address{1} - genesis = WriteGenesisBlockForTesting(db, GenesisAccount{address, funds}, GenesisAccount{deleteAddr, new(big.Int)}) - config = ¶ms.ChainConfig{ChainId: big.NewInt(1), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)} - mux event.TypeMux + gspec = &Genesis{ + Config: ¶ms.ChainConfig{ChainId: big.NewInt(1), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{address: {Balance: funds}, deleteAddr: {Balance: new(big.Int)}}, + } + genesis = gspec.MustCommit(db) + mux event.TypeMux ) - blockchain, _ := NewBlockChain(db, config, pow.FakePow{}, &mux, vm.Config{}) - blocks, _ := GenerateChain(config, genesis, db, 4, func(i int, block *BlockGen) { + blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, &mux, vm.Config{}) + blocks, _ := GenerateChain(gspec.Config, genesis, db, 4, func(i int, block *BlockGen) { var ( tx *types.Transaction err error @@ -1164,7 +1027,7 @@ func TestEIP155Transition(t *testing.T) { } block.AddTx(tx) - tx, err = basicTx(types.NewEIP155Signer(config.ChainId)) + tx, err = basicTx(types.NewEIP155Signer(gspec.Config.ChainId)) if err != nil { t.Fatal(err) } @@ -1176,7 +1039,7 @@ func TestEIP155Transition(t *testing.T) { } block.AddTx(tx) - tx, err = basicTx(types.NewEIP155Signer(config.ChainId)) + tx, err = basicTx(types.NewEIP155Signer(gspec.Config.ChainId)) if err != nil { t.Fatal(err) } @@ -1204,7 +1067,7 @@ func TestEIP155Transition(t *testing.T) { } // generate an invalid chain id transaction - config = ¶ms.ChainConfig{ChainId: big.NewInt(2), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)} + config := ¶ms.ChainConfig{ChainId: big.NewInt(2), EIP155Block: big.NewInt(2), HomesteadBlock: new(big.Int)} blocks, _ = GenerateChain(config, blocks[len(blocks)-1], db, 4, func(i int, block *BlockGen) { var ( tx *types.Transaction @@ -1236,22 +1099,24 @@ func TestEIP161AccountRemoval(t *testing.T) { address = crypto.PubkeyToAddress(key.PublicKey) funds = big.NewInt(1000000000) theAddr = common.Address{1} - genesis = WriteGenesisBlockForTesting(db, GenesisAccount{address, funds}) - config = ¶ms.ChainConfig{ - ChainId: big.NewInt(1), - HomesteadBlock: new(big.Int), - EIP155Block: new(big.Int), - EIP158Block: big.NewInt(2), + gspec = &Genesis{ + Config: ¶ms.ChainConfig{ + ChainId: big.NewInt(1), + HomesteadBlock: new(big.Int), + EIP155Block: new(big.Int), + EIP158Block: big.NewInt(2), + }, + Alloc: GenesisAlloc{address: {Balance: funds}}, } - mux event.TypeMux - - blockchain, _ = NewBlockChain(db, config, pow.FakePow{}, &mux, vm.Config{}) + genesis = gspec.MustCommit(db) + mux event.TypeMux + blockchain, _ = NewBlockChain(db, gspec.Config, pow.FakePow{}, &mux, vm.Config{}) ) - blocks, _ := GenerateChain(config, genesis, db, 3, func(i int, block *BlockGen) { + blocks, _ := GenerateChain(gspec.Config, genesis, db, 3, func(i int, block *BlockGen) { var ( tx *types.Transaction err error - signer = types.NewEIP155Signer(config.ChainId) + signer = types.NewEIP155Signer(gspec.Config.ChainId) ) switch i { case 0: @@ -1279,7 +1144,7 @@ func TestEIP161AccountRemoval(t *testing.T) { t.Fatal(err) } if blockchain.stateCache.Exist(theAddr) { - t.Error("account should not expect") + t.Error("account should not exist") } // account musn't be created post eip 161 @@ -1287,6 +1152,6 @@ func TestEIP161AccountRemoval(t *testing.T) { t.Fatal(err) } if blockchain.stateCache.Exist(theAddr) { - t.Error("account should not expect") + t.Error("account should not exist") } } diff --git a/core/chain_makers.go b/core/chain_makers.go index f63496fdc3..5bf1ece25b 100644 --- a/core/chain_makers.go +++ b/core/chain_makers.go @@ -30,19 +30,6 @@ import ( "github.com/ethereum/go-ethereum/pow" ) -/* - * TODO: move this to another package. - */ - -// MakeChainConfig returns a new ChainConfig with the ethereum default chain settings. -func MakeChainConfig() *params.ChainConfig { - return ¶ms.ChainConfig{ - HomesteadBlock: big.NewInt(0), - DAOForkBlock: nil, - DAOForkSupport: true, - } -} - // So we can deterministically seed different blockchains var ( canonicalSeed = 1 @@ -154,7 +141,7 @@ func (b *BlockGen) OffsetTime(seconds int64) { if b.header.Time.Cmp(b.parent.Header().Time) <= 0 { panic("block time out of range") } - b.header.Difficulty = CalcDifficulty(MakeChainConfig(), b.header.Time.Uint64(), b.parent.Time().Uint64(), b.parent.Number(), b.parent.Difficulty()) + b.header.Difficulty = CalcDifficulty(b.config, b.header.Time.Uint64(), b.parent.Time().Uint64(), b.parent.Number(), b.parent.Difficulty()) } // GenerateChain creates a chain of n blocks. The first block's @@ -170,14 +157,13 @@ func (b *BlockGen) OffsetTime(seconds int64) { // values. Inserting them into BlockChain requires use of FakePow or // a similar non-validating proof of work implementation. func GenerateChain(config *params.ChainConfig, parent *types.Block, db ethdb.Database, n int, gen func(int, *BlockGen)) ([]*types.Block, []types.Receipts) { + if config == nil { + config = params.TestChainConfig + } blocks, receipts := make(types.Blocks, n), make([]types.Receipts, n) genblock := func(i int, h *types.Header, statedb *state.StateDB) (*types.Block, types.Receipts) { b := &BlockGen{parent: parent, i: i, chain: blocks, header: h, statedb: statedb, config: config} - // Mutate the state and block according to any hard-fork specs - if config == nil { - config = MakeChainConfig() - } if daoBlock := config.DAOForkBlock; daoBlock != nil { limit := new(big.Int).Add(daoBlock, params.DAOForkExtraRange) if h.Number.Cmp(daoBlock) >= 0 && h.Number.Cmp(limit) < 0 { @@ -226,7 +212,7 @@ func makeHeader(config *params.ChainConfig, parent *types.Block, state *state.St Root: state.IntermediateRoot(config.IsEIP158(parent.Number())), ParentHash: parent.Hash(), Coinbase: parent.Coinbase(), - Difficulty: CalcDifficulty(MakeChainConfig(), time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()), + Difficulty: CalcDifficulty(config, time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()), GasLimit: CalcGasLimit(parent), GasUsed: new(big.Int), Number: new(big.Int).Add(parent.Number(), common.Big1), @@ -238,14 +224,12 @@ func makeHeader(config *params.ChainConfig, parent *types.Block, state *state.St // chain. Depending on the full flag, if creates either a full block chain or a // header only chain. func newCanonical(n int, full bool) (ethdb.Database, *BlockChain, error) { - // Create the new chain database - db, _ := ethdb.NewMemDatabase() - evmux := &event.TypeMux{} - // Initialize a fresh chain with only a genesis block - genesis, _ := WriteTestNetGenesisBlock(db) + gspec := new(Genesis) + db, _ := ethdb.NewMemDatabase() + genesis := gspec.MustCommit(db) - blockchain, _ := NewBlockChain(db, MakeChainConfig(), pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, params.AllProtocolChanges, pow.FakePow{}, new(event.TypeMux), vm.Config{}) // Create and inject the requested chain if n == 0 { return db, blockchain, nil diff --git a/core/chain_makers_test.go b/core/chain_makers_test.go index 82751553ff..a8f77cdf3e 100644 --- a/core/chain_makers_test.go +++ b/core/chain_makers_test.go @@ -30,9 +30,6 @@ import ( ) func ExampleGenerateChain() { - params.MinGasLimit = big.NewInt(125000) // Minimum the gas limit may ever be. - params.GenesisGasLimit = big.NewInt(3141592) // Gas limit of the Genesis block. - var ( key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") @@ -41,19 +38,20 @@ func ExampleGenerateChain() { addr2 = crypto.PubkeyToAddress(key2.PublicKey) addr3 = crypto.PubkeyToAddress(key3.PublicKey) db, _ = ethdb.NewMemDatabase() - signer = types.HomesteadSigner{} ) - chainConfig := ¶ms.ChainConfig{ - HomesteadBlock: new(big.Int), - } // Ensure that key1 has some funds in the genesis block. - genesis := WriteGenesisBlockForTesting(db, GenesisAccount{addr1, big.NewInt(1000000)}) + gspec := &Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: new(big.Int)}, + Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(1000000)}}, + } + genesis := gspec.MustCommit(db) // This call generates a chain of 5 blocks. The function runs for // each block and adds different features to gen based on the // block index. - chain, _ := GenerateChain(chainConfig, genesis, db, 5, func(i int, gen *BlockGen) { + signer := types.HomesteadSigner{} + chain, _ := GenerateChain(gspec.Config, genesis, db, 5, func(i int, gen *BlockGen) { switch i { case 0: // In block 1, addr1 sends addr2 some ether. @@ -83,7 +81,7 @@ func ExampleGenerateChain() { // Import the chain. This runs all block validation rules. evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, chainConfig, pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) if i, err := blockchain.InsertChain(chain); err != nil { fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err) return diff --git a/core/dao.go b/core/dao.go index 7e376e68aa..c43899e315 100644 --- a/core/dao.go +++ b/core/dao.go @@ -67,7 +67,7 @@ func ApplyDAOHardFork(statedb *state.StateDB) { } // Move every DAO account and extra-balance account funds into the refund contract - for _, addr := range params.DAODrainList { + for _, addr := range params.DAODrainList() { statedb.AddBalance(params.DAORefundContract, statedb.GetBalance(addr)) statedb.SetBalance(addr, new(big.Int)) } diff --git a/core/dao_test.go b/core/dao_test.go index 45b3235c71..c0d4826303 100644 --- a/core/dao_test.go +++ b/core/dao_test.go @@ -34,17 +34,18 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Generate a common prefix for both pro-forkers and non-forkers db, _ := ethdb.NewMemDatabase() - genesis := WriteGenesisBlockForTesting(db) + gspec := new(Genesis) + genesis := gspec.MustCommit(db) prefix, _ := GenerateChain(params.TestChainConfig, genesis, db, int(forkBlock.Int64()-1), func(i int, gen *BlockGen) {}) // Create the concurrent, conflicting two nodes proDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(proDb) + gspec.MustCommit(proDb) proConf := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true} proBc, _ := NewBlockChain(proDb, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) conDb, _ := ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(conDb) + gspec.MustCommit(conDb) conConf := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false} conBc, _ := NewBlockChain(conDb, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) @@ -58,7 +59,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { for i := int64(0); i < params.DAOForkExtraRange.Int64(); i++ { // Create a pro-fork block, and try to feed into the no-fork chain db, _ = ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(db) + gspec.MustCommit(db) bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) @@ -79,7 +80,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { } // Create a no-fork block, and try to feed into the pro-fork chain db, _ = ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(db) + gspec.MustCommit(db) bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) @@ -101,7 +102,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { } // Verify that contra-forkers accept pro-fork extra-datas after forking finishes db, _ = ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(db) + gspec.MustCommit(db) bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) @@ -117,7 +118,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { } // Verify that pro-forkers accept contra-fork extra-datas after forking finishes db, _ = ethdb.NewMemDatabase() - WriteGenesisBlockForTesting(db) + gspec.MustCommit(db) bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) diff --git a/core/database_util_test.go b/core/database_util_test.go index 0af4e49206..e6be060930 100644 --- a/core/database_util_test.go +++ b/core/database_util_test.go @@ -562,7 +562,7 @@ func TestMipmapChain(t *testing.T) { ) defer db.Close() - genesis := WriteGenesisBlockForTesting(db, GenesisAccount{addr, big.NewInt(1000000)}) + genesis := testGenesis(addr, big.NewInt(1000000)).MustCommit(db) chain, receipts := GenerateChain(params.TestChainConfig, genesis, db, 1010, func(i int, gen *BlockGen) { var receipts types.Receipts switch i { diff --git a/core/default_genesis.go b/core/default_genesis.go deleted file mode 100644 index 08fd432d78..0000000000 --- a/core/default_genesis.go +++ /dev/null @@ -1,28 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package core - -// defaultGenesisBlock is a gzip compressed dump of the official default Ethereum -// genesis block. -const defaultGenesisBlock = "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" - -// defaultTestnetGenesisBlock is a gzip compressed dump of the official default Ethereum -// test network genesis block (currently Ropsten). -const defaultTestnetGenesisBlock = "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" - -// defaultDevnetGenesisBlockis a gzip compressed dump of a dev Ethereum network genesis block. -const defaultDevnetGenesisBlock = "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" diff --git a/core/gen_genesis.go b/core/gen_genesis.go new file mode 100644 index 0000000000..b5561ba454 --- /dev/null +++ b/core/gen_genesis.go @@ -0,0 +1,106 @@ +// generated by github.com/fjl/gencodec, do not edit. + +package core + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/params" +) + +func (g *Genesis) MarshalJSON() ([]byte, error) { + type GenesisJSON struct { + ChainConfig *params.ChainConfig `json:"config" optional:"true"` + Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` + ParentHash *common.Hash `json:"parentHash" optional:"true"` + ExtraData hexutil.Bytes `json:"extraData" optional:"true"` + GasLimit *math.HexOrDecimal64 `json:"gasLimit"` + Difficulty *math.HexOrDecimal256 `json:"difficulty"` + Mixhash *common.Hash `json:"mixHash" optional:"true"` + Coinbase *common.Address `json:"coinbase" optional:"true"` + Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` + } + var enc GenesisJSON + enc.ChainConfig = g.Config + enc.Nonce = (*math.HexOrDecimal64)(&g.Nonce) + enc.Timestamp = (*math.HexOrDecimal64)(&g.Timestamp) + enc.ParentHash = &g.ParentHash + if g.ExtraData != nil { + enc.ExtraData = g.ExtraData + } + enc.GasLimit = (*math.HexOrDecimal64)(&g.GasLimit) + enc.Difficulty = (*math.HexOrDecimal256)(g.Difficulty) + enc.Mixhash = &g.Mixhash + enc.Coinbase = &g.Coinbase + if g.Alloc != nil { + enc.Alloc = make(map[common.UnprefixedAddress]GenesisAccount, len(g.Alloc)) + for k, v := range g.Alloc { + enc.Alloc[common.UnprefixedAddress(k)] = v + } + } + return json.Marshal(&enc) +} + +func (g *Genesis) UnmarshalJSON(input []byte) error { + type GenesisJSON struct { + ChainConfig *params.ChainConfig `json:"config" optional:"true"` + Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` + ParentHash *common.Hash `json:"parentHash" optional:"true"` + ExtraData hexutil.Bytes `json:"extraData" optional:"true"` + GasLimit *math.HexOrDecimal64 `json:"gasLimit"` + Difficulty *math.HexOrDecimal256 `json:"difficulty"` + Mixhash *common.Hash `json:"mixHash" optional:"true"` + Coinbase *common.Address `json:"coinbase" optional:"true"` + Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` + } + var dec GenesisJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + var x Genesis + if dec.ChainConfig != nil { + x.Config = dec.ChainConfig + } + if dec.Nonce != nil { + x.Nonce = uint64(*dec.Nonce) + } + if dec.Timestamp != nil { + x.Timestamp = uint64(*dec.Timestamp) + } + if dec.ParentHash != nil { + x.ParentHash = *dec.ParentHash + } + if dec.ExtraData != nil { + x.ExtraData = dec.ExtraData + } + if dec.GasLimit == nil { + return errors.New("missing required field 'gasLimit' for Genesis") + } + x.GasLimit = uint64(*dec.GasLimit) + if dec.Difficulty == nil { + return errors.New("missing required field 'difficulty' for Genesis") + } + x.Difficulty = (*big.Int)(dec.Difficulty) + if dec.Mixhash != nil { + x.Mixhash = *dec.Mixhash + } + if dec.Coinbase != nil { + x.Coinbase = *dec.Coinbase + } + if dec.Alloc == nil { + return errors.New("missing required field 'alloc' for Genesis") + } + x.Alloc = make(GenesisAlloc, len(dec.Alloc)) + for k, v := range dec.Alloc { + x.Alloc[common.Address(k)] = v + } + *g = x + return nil +} diff --git a/core/gen_genesis_account.go b/core/gen_genesis_account.go new file mode 100644 index 0000000000..2dda122f27 --- /dev/null +++ b/core/gen_genesis_account.go @@ -0,0 +1,61 @@ +// generated by github.com/fjl/gencodec, do not edit. + +package core + +import ( + "encoding/json" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/common/math" +) + +func (g *GenesisAccount) MarshalJSON() ([]byte, error) { + type GenesisAccountJSON struct { + Code hexutil.Bytes `json:"code" optional:"true"` + Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` + Balance *math.HexOrDecimal256 `json:"balance"` + Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + } + var enc GenesisAccountJSON + if g.Code != nil { + enc.Code = g.Code + } + if g.Storage != nil { + enc.Storage = g.Storage + } + enc.Balance = (*math.HexOrDecimal256)(g.Balance) + enc.Nonce = (*math.HexOrDecimal64)(&g.Nonce) + return json.Marshal(&enc) +} + +func (g *GenesisAccount) UnmarshalJSON(input []byte) error { + type GenesisAccountJSON struct { + Code hexutil.Bytes `json:"code" optional:"true"` + Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` + Balance *math.HexOrDecimal256 `json:"balance"` + Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + } + var dec GenesisAccountJSON + if err := json.Unmarshal(input, &dec); err != nil { + return err + } + var x GenesisAccount + if dec.Code != nil { + x.Code = dec.Code + } + if dec.Storage != nil { + x.Storage = dec.Storage + } + if dec.Balance == nil { + return errors.New("missing required field 'balance' for GenesisAccount") + } + x.Balance = (*big.Int)(dec.Balance) + if dec.Nonce != nil { + x.Nonce = uint64(*dec.Nonce) + } + *g = x + return nil +} diff --git a/core/genesis.go b/core/genesis.go index 9fa49f4d0e..08d4ae2d19 100644 --- a/core/genesis.go +++ b/core/genesis.go @@ -17,230 +17,286 @@ package core import ( - "compress/bzip2" - "compress/gzip" - "encoding/base64" - "encoding/json" + "errors" "fmt" - "io" - "io/ioutil" "math/big" "strings" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/common/math" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/rlp" ) -// WriteGenesisBlock writes the genesis block to the database as block number 0 -func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block, error) { - contents, err := ioutil.ReadAll(reader) +//go:generate gencodec -type Genesis -field-override genesisSpecMarshaling -out gen_genesis.go +//go:generate gencodec -type GenesisAccount -field-override genesisAccountMarshaling -out gen_genesis_account.go + +var errGenesisNoConfig = errors.New("genesis has no chain configuration") + +// Genesis specifies the header fields, state of a genesis block. It also defines hard +// fork switch-over blocks through the chain configuration. +type Genesis struct { + Config *params.ChainConfig `json:"config" optional:"true"` + Nonce uint64 `json:"nonce" optional:"true"` + Timestamp uint64 `json:"timestamp" optional:"true"` + ParentHash common.Hash `json:"parentHash" optional:"true"` + ExtraData []byte `json:"extraData" optional:"true"` + GasLimit uint64 `json:"gasLimit"` + Difficulty *big.Int `json:"difficulty"` + Mixhash common.Hash `json:"mixHash" optional:"true"` + Coinbase common.Address `json:"coinbase" optional:"true"` + Alloc GenesisAlloc `json:"alloc"` +} + +// GenesisAlloc specifies the initial state that is part of the genesis block. +type GenesisAlloc map[common.Address]GenesisAccount + +// GenesisAccount is an account in the state of the genesis block. +type GenesisAccount struct { + Code []byte `json:"code" optional:"true"` + Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` + Balance *big.Int `json:"balance"` + Nonce uint64 `json:"nonce" optional:"true"` +} + +// field type overrides for gencodec +type genesisSpecMarshaling struct { + Nonce math.HexOrDecimal64 + Timestamp math.HexOrDecimal64 + ExtraData hexutil.Bytes + GasLimit math.HexOrDecimal64 + Difficulty *math.HexOrDecimal256 + Alloc map[common.UnprefixedAddress]GenesisAccount +} +type genesisAccountMarshaling struct { + Code hexutil.Bytes + Balance *math.HexOrDecimal256 + Nonce math.HexOrDecimal64 +} + +// GenesisMismatchError is raised when trying to overwrite an existing +// genesis block with an incompatible one. +type GenesisMismatchError struct { + Stored, New common.Hash +} + +func (e *GenesisMismatchError) Error() string { + return fmt.Sprintf("wrong genesis block in database (have %x, new %x)", e.Stored[:8], e.New[:8]) +} + +// SetupGenesisBlock writes or updates the genesis block in db. +// The block that will be used is: +// +// genesis == nil genesis != nil +// +------------------------------------------ +// db has no genesis | main-net default | genesis +// db has genesis | from DB | genesis (if compatible) +// +// The stored chain configuration will be updated if it is compatible (i.e. does not +// specify a fork block below the local head block). In case of a conflict, the +// error is a *params.ConfigCompatError and the new, unwritten config is returned. +// +// The returned chain configuration is never nil. +func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig, common.Hash, error) { + if genesis != nil && genesis.Config == nil { + return params.AllProtocolChanges, common.Hash{}, errGenesisNoConfig + } + + // Just commit the new block if there is no stored genesis block. + stored := GetCanonicalHash(db, 0) + if (stored == common.Hash{}) { + if genesis == nil { + log.Info("Writing default main-net genesis block") + genesis = DefaultGenesisBlock() + } else { + log.Info("Writing custom genesis block") + } + block, err := genesis.Commit(db) + return genesis.Config, block.Hash(), err + } + + // Check whether the genesis block is already written. + if genesis != nil { + block, _ := genesis.ToBlock() + hash := block.Hash() + if hash != stored { + return genesis.Config, block.Hash(), &GenesisMismatchError{stored, hash} + } + } + + // Get the existing chain configuration. + newcfg := genesis.configOrDefault(stored) + storedcfg, err := GetChainConfig(db, stored) if err != nil { - return nil, err - } - - var genesis struct { - ChainConfig *params.ChainConfig `json:"config"` - Nonce string - Timestamp string - ParentHash string - ExtraData string - GasLimit string - Difficulty string - Mixhash string - Coinbase string - Alloc map[string]struct { - Code string - Storage map[string]string - Balance string - Nonce string + if err == ChainConfigNotFoundErr { + // This case happens if a genesis write was interrupted. + log.Warn("Found genesis block without chain config") + err = WriteChainConfig(db, stored, newcfg) } + return newcfg, stored, err + } + // Special case: don't change the existing config of a non-mainnet chain if no new + // config is supplied. These chains would get AllProtocolChanges (and a compat error) + // if we just continued here. + if genesis == nil && stored != params.MainNetGenesisHash { + return storedcfg, stored, nil } - if err := json.Unmarshal(contents, &genesis); err != nil { - return nil, err + // Check config compatibility and write the config. Compatibility errors + // are returned to the caller unless we're already at block zero. + height := GetBlockNumber(db, GetHeadHeaderHash(db)) + if height == missingNumber { + return newcfg, stored, fmt.Errorf("missing block number for head header hash") } - if genesis.ChainConfig == nil { - genesis.ChainConfig = params.AllProtocolChanges + compatErr := storedcfg.CheckCompatible(newcfg, height) + if compatErr != nil && height != 0 && compatErr.RewindTo != 0 { + return newcfg, stored, compatErr } + return newcfg, stored, WriteChainConfig(db, stored, newcfg) +} - // creating with empty hash always works - statedb, _ := state.New(common.Hash{}, chainDb) - for addr, account := range genesis.Alloc { - balance, ok := math.ParseBig256(account.Balance) - if !ok { - return nil, fmt.Errorf("invalid balance for account %s: %q", addr, account.Balance) - } - nonce, ok := math.ParseUint64(account.Nonce) - if !ok { - return nil, fmt.Errorf("invalid nonce for account %s: %q", addr, account.Nonce) - } +func (g *Genesis) configOrDefault(ghash common.Hash) *params.ChainConfig { + switch { + case g != nil: + return g.Config + case ghash == params.MainNetGenesisHash: + return params.MainnetChainConfig + case ghash == params.TestNetGenesisHash: + return params.TestnetChainConfig + default: + return params.AllProtocolChanges + } +} - address := common.HexToAddress(addr) - statedb.AddBalance(address, balance) - statedb.SetCode(address, common.FromHex(account.Code)) - statedb.SetNonce(address, nonce) +// ToBlock creates the block and state of a genesis specification. +func (g *Genesis) ToBlock() (*types.Block, *state.StateDB) { + db, _ := ethdb.NewMemDatabase() + statedb, _ := state.New(common.Hash{}, db) + for addr, account := range g.Alloc { + statedb.AddBalance(addr, account.Balance) + statedb.SetCode(addr, account.Code) + statedb.SetNonce(addr, account.Nonce) for key, value := range account.Storage { - statedb.SetState(address, common.HexToHash(key), common.HexToHash(value)) + statedb.SetState(addr, key, value) } } - root, stateBatch := statedb.CommitBatch(false) - - difficulty, ok := math.ParseBig256(genesis.Difficulty) - if !ok { - return nil, fmt.Errorf("invalid difficulty: %q", genesis.Difficulty) - } - gaslimit, ok := math.ParseUint64(genesis.GasLimit) - if !ok { - return nil, fmt.Errorf("invalid gas limit: %q", genesis.GasLimit) - } - nonce, ok := math.ParseUint64(genesis.Nonce) - if !ok { - return nil, fmt.Errorf("invalid nonce: %q", genesis.Nonce) - } - timestamp, ok := math.ParseBig256(genesis.Timestamp) - if !ok { - return nil, fmt.Errorf("invalid timestamp: %q", genesis.Timestamp) - } - - block := types.NewBlock(&types.Header{ - Nonce: types.EncodeNonce(nonce), - Time: timestamp, - ParentHash: common.HexToHash(genesis.ParentHash), - Extra: common.FromHex(genesis.ExtraData), - GasLimit: new(big.Int).SetUint64(gaslimit), - Difficulty: difficulty, - MixDigest: common.HexToHash(genesis.Mixhash), - Coinbase: common.HexToAddress(genesis.Coinbase), + root := statedb.IntermediateRoot(false) + head := &types.Header{ + Nonce: types.EncodeNonce(g.Nonce), + Time: new(big.Int).SetUint64(g.Timestamp), + ParentHash: g.ParentHash, + Extra: g.ExtraData, + GasLimit: new(big.Int).SetUint64(g.GasLimit), + Difficulty: g.Difficulty, + MixDigest: g.Mixhash, + Coinbase: g.Coinbase, Root: root, - }, nil, nil, nil) - - if block := GetBlock(chainDb, block.Hash(), block.NumberU64()); block != nil { - log.Info("Genesis block known, writing canonical number") - err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()) - if err != nil { - return nil, err - } - return block, nil } + if g.GasLimit == 0 { + head.GasLimit = params.GenesisGasLimit + } + if g.Difficulty == nil { + head.Difficulty = params.GenesisDifficulty + } + return types.NewBlock(head, nil, nil, nil), statedb +} - if err := stateBatch.Write(); err != nil { +// Commit writes the block and state of a genesis specification to the database. +// The block is committed as the canonical head block. +func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) { + block, statedb := g.ToBlock() + if _, err := statedb.CommitTo(db, false); err != nil { return nil, fmt.Errorf("cannot write state: %v", err) } - if err := WriteTd(chainDb, block.Hash(), block.NumberU64(), difficulty); err != nil { + if err := WriteTd(db, block.Hash(), block.NumberU64(), g.Difficulty); err != nil { return nil, err } - if err := WriteBlock(chainDb, block); err != nil { + if err := WriteBlock(db, block); err != nil { return nil, err } - if err := WriteBlockReceipts(chainDb, block.Hash(), block.NumberU64(), nil); err != nil { + if err := WriteBlockReceipts(db, block.Hash(), block.NumberU64(), nil); err != nil { return nil, err } - if err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()); err != nil { + if err := WriteCanonicalHash(db, block.Hash(), block.NumberU64()); err != nil { return nil, err } - if err := WriteHeadBlockHash(chainDb, block.Hash()); err != nil { + if err := WriteHeadBlockHash(db, block.Hash()); err != nil { return nil, err } - if err := WriteChainConfig(chainDb, block.Hash(), genesis.ChainConfig); err != nil { + if err := WriteHeadHeaderHash(db, block.Hash()); err != nil { return nil, err } - return block, nil + config := g.Config + if config == nil { + config = params.AllProtocolChanges + } + return block, WriteChainConfig(db, block.Hash(), config) } -// GenesisBlockForTesting creates a block in which addr has the given wei balance. -// The state trie of the block is written to db. the passed db needs to contain a state root -func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big.Int) *types.Block { - statedb, _ := state.New(common.Hash{}, db) - obj := statedb.GetOrNewStateObject(addr) - obj.SetBalance(balance) - root, err := statedb.Commit(false) - if err != nil { - panic(fmt.Sprintf("cannot write state: %v", err)) - } - block := types.NewBlock(&types.Header{ - Difficulty: params.GenesisDifficulty, - GasLimit: params.GenesisGasLimit, - Root: root, - }, nil, nil, nil) - return block -} - -type GenesisAccount struct { - Address common.Address - Balance *big.Int -} - -func WriteGenesisBlockForTesting(db ethdb.Database, accounts ...GenesisAccount) *types.Block { - accountJson := "{" - for i, account := range accounts { - if i != 0 { - accountJson += "," - } - accountJson += fmt.Sprintf(`"0x%x":{"balance":"%d"}`, account.Address, account.Balance) - } - accountJson += "}" - - testGenesis := fmt.Sprintf(`{ - "nonce":"0x%x", - "gasLimit":"0x%x", - "difficulty":"0x%x", - "alloc": %s -}`, types.EncodeNonce(0), params.GenesisGasLimit.Bytes(), params.GenesisDifficulty.Bytes(), accountJson) - block, err := WriteGenesisBlock(db, strings.NewReader(testGenesis)) +// MustCommit writes the genesis block and state to db, panicking on error. +// The block is committed as the canonical head block. +func (g *Genesis) MustCommit(db ethdb.Database) *types.Block { + block, err := g.Commit(db) if err != nil { panic(err) } return block } -// WriteDefaultGenesisBlock assembles the official Ethereum genesis block and -// writes it - along with all associated state - into a chain database. -func WriteDefaultGenesisBlock(chainDb ethdb.Database) (*types.Block, error) { - return WriteGenesisBlock(chainDb, strings.NewReader(DefaultGenesisBlock())) +// GenesisBlockForTesting creates and writes a block in which addr has the given wei balance. +func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big.Int) *types.Block { + g := Genesis{Alloc: GenesisAlloc{addr: {Balance: balance}}} + return g.MustCommit(db) } -// WriteTestNetGenesisBlock assembles the test network genesis block and -// writes it - along with all associated state - into a chain database. -func WriteTestNetGenesisBlock(chainDb ethdb.Database) (*types.Block, error) { - return WriteGenesisBlock(chainDb, strings.NewReader(DefaultTestnetGenesisBlock())) +// DefaultGenesisBlock returns the Ethereum main net genesis block. +func DefaultGenesisBlock() *Genesis { + return &Genesis{ + Config: params.MainnetChainConfig, + Nonce: 66, + ExtraData: hexutil.MustDecode("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa"), + GasLimit: 5000, + Difficulty: big.NewInt(17179869184), + Alloc: decodePrealloc(mainnetAllocData), + } } -// DefaultGenesisBlock assembles a JSON string representing the default Ethereum -// genesis block. -func DefaultGenesisBlock() string { - reader, err := gzip.NewReader(base64.NewDecoder(base64.StdEncoding, strings.NewReader(defaultGenesisBlock))) - if err != nil { - panic(fmt.Sprintf("failed to access default genesis: %v", err)) +// DefaultTestnetGenesisBlock returns the Ropsten network genesis block. +func DefaultTestnetGenesisBlock() *Genesis { + return &Genesis{ + Config: params.TestnetChainConfig, + Nonce: 66, + ExtraData: hexutil.MustDecode("0x3535353535353535353535353535353535353535353535353535353535353535"), + GasLimit: 16777216, + Difficulty: big.NewInt(1048576), + Alloc: decodePrealloc(testnetAllocData), } - blob, err := ioutil.ReadAll(reader) - if err != nil { - panic(fmt.Sprintf("failed to load default genesis: %v", err)) - } - return string(blob) } -// DefaultTestnetGenesisBlock assembles a JSON string representing the default Ethereum -// test network genesis block. -func DefaultTestnetGenesisBlock() string { - reader := bzip2.NewReader(base64.NewDecoder(base64.StdEncoding, strings.NewReader(defaultTestnetGenesisBlock))) - blob, err := ioutil.ReadAll(reader) - if err != nil { - panic(fmt.Sprintf("failed to load default genesis: %v", err)) +// DevGenesisBlock returns the 'geth --dev' genesis block. +func DevGenesisBlock() *Genesis { + return &Genesis{ + Config: params.AllProtocolChanges, + Nonce: 42, + GasLimit: 4712388, + Difficulty: big.NewInt(131072), + Alloc: decodePrealloc(devAllocData), } - return string(blob) } -// DevGenesisBlock assembles a JSON string representing a local dev genesis block. -func DevGenesisBlock() string { - reader := bzip2.NewReader(base64.NewDecoder(base64.StdEncoding, strings.NewReader(defaultDevnetGenesisBlock))) - blob, err := ioutil.ReadAll(reader) - if err != nil { - panic(fmt.Sprintf("failed to load dev genesis: %v", err)) +func decodePrealloc(data string) GenesisAlloc { + var p []struct{ Addr, Balance *big.Int } + if err := rlp.NewStream(strings.NewReader(data), 0).Decode(&p); err != nil { + panic(err) } - return string(blob) + ga := make(GenesisAlloc, len(p)) + for _, account := range p { + ga[common.BigToAddress(account.Addr)] = GenesisAccount{Balance: account.Balance} + } + return ga } diff --git a/core/genesis_alloc.go b/core/genesis_alloc.go new file mode 100644 index 0000000000..fa4635df2a --- /dev/null +++ b/core/genesis_alloc.go @@ -0,0 +1,25 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +// Constants containing the genesis allocation of built-in genesis blocks. +// Their content is an RLP-encoded list of (address, balance) tuples. +// Use mkalloc.go to create/update them. + +const mainnetAllocData = "\xfa\x04]X\u0793\r\x83b\x011\x8e\u0189\x9agT\x06\x908'\x80t2\x80\x89\n\u05ce\xbcZ\xc6 \x00\x00\u0793\x17bC\x0e\xa9\u00e2nWI\xaf\xdbp\xda_x\u077b\x8c\x89\n\u05ce\xbcZ\xc6 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+const devAllocData = "\xf9\x01\x94\xc2\x01\x01\xc2\x02\x01\xc2\x03\x01\xc2\x04\x01\xf0\x94\x1a&3\x8f\r\x90^)_\u0337\x1f\xa9\ua11f\xfa\x12\xaa\xf4\x9a\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf0\x94.\xf4q\x00\xe0x{\x91Q\x05\xfd^?O\xf6u 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diff --git a/core/genesis_test.go b/core/genesis_test.go new file mode 100644 index 0000000000..b73dd776fe --- /dev/null +++ b/core/genesis_test.go @@ -0,0 +1,161 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package core + +import ( + "math/big" + "reflect" + "testing" + + "github.com/davecgh/go-spew/spew" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/vm" + "github.com/ethereum/go-ethereum/ethdb" + "github.com/ethereum/go-ethereum/event" + "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/pow" +) + +func TestDefaultGenesisBlock(t *testing.T) { + block, _ := DefaultGenesisBlock().ToBlock() + if block.Hash() != params.MainNetGenesisHash { + t.Errorf("wrong mainnet genesis hash, got %v, want %v", block.Hash(), params.MainNetGenesisHash) + } + block, _ = DefaultTestnetGenesisBlock().ToBlock() + if block.Hash() != params.TestNetGenesisHash { + t.Errorf("wrong testnet genesis hash, got %v, want %v", block.Hash(), params.TestNetGenesisHash) + } +} + +func TestSetupGenesis(t *testing.T) { + var ( + customghash = common.HexToHash("0x89c99d90b79719238d2645c7642f2c9295246e80775b38cfd162b696817fbd50") + customg = Genesis{ + Config: ¶ms.ChainConfig{HomesteadBlock: big.NewInt(3)}, + Alloc: GenesisAlloc{ + {1}: {Balance: big.NewInt(1), Storage: map[common.Hash]common.Hash{{1}: {1}}}, + }, + } + oldcustomg = customg + ) + oldcustomg.Config = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(2)} + tests := []struct { + name string + fn func(ethdb.Database) (*params.ChainConfig, common.Hash, error) + wantConfig *params.ChainConfig + wantHash common.Hash + wantErr error + }{ + { + name: "genesis without ChainConfig", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + return SetupGenesisBlock(db, new(Genesis)) + }, + wantErr: errGenesisNoConfig, + wantConfig: params.AllProtocolChanges, + }, + { + name: "no block in DB, genesis == nil", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + return SetupGenesisBlock(db, nil) + }, + wantHash: params.MainNetGenesisHash, + wantConfig: params.MainnetChainConfig, + }, + { + name: "mainnet block in DB, genesis == nil", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + DefaultGenesisBlock().MustCommit(db) + return SetupGenesisBlock(db, nil) + }, + wantHash: params.MainNetGenesisHash, + wantConfig: params.MainnetChainConfig, + }, + { + name: "custom block in DB, genesis == nil", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + customg.MustCommit(db) + return SetupGenesisBlock(db, nil) + }, + wantHash: customghash, + wantConfig: customg.Config, + }, + { + name: "custom block in DB, genesis == testnet", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + customg.MustCommit(db) + return SetupGenesisBlock(db, DefaultTestnetGenesisBlock()) + }, + wantErr: &GenesisMismatchError{Stored: customghash, New: params.TestNetGenesisHash}, + wantHash: params.TestNetGenesisHash, + wantConfig: params.TestnetChainConfig, + }, + { + name: "compatible config in DB", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + oldcustomg.MustCommit(db) + return SetupGenesisBlock(db, &customg) + }, + wantHash: customghash, + wantConfig: customg.Config, + }, + { + name: "incompatible config in DB", + fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) { + // Commit the 'old' genesis block with Homestead transition at #2. + // Advance to block #4, past the homestead transition block of customg. + genesis := oldcustomg.MustCommit(db) + bc, _ := NewBlockChain(db, oldcustomg.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + bc.SetValidator(bproc{}) + bc.InsertChain(makeBlockChainWithDiff(genesis, []int{2, 3, 4, 5}, 0)) + bc.CurrentBlock() + // This should return a compatibility error. + return SetupGenesisBlock(db, &customg) + }, + wantHash: customghash, + wantConfig: customg.Config, + wantErr: ¶ms.ConfigCompatError{ + What: "Homestead fork block", + StoredConfig: big.NewInt(2), + NewConfig: big.NewInt(3), + RewindTo: 1, + }, + }, + } + + for _, test := range tests { + db, _ := ethdb.NewMemDatabase() + config, hash, err := test.fn(db) + // Check the return values. + if !reflect.DeepEqual(err, test.wantErr) { + spew := spew.ConfigState{DisablePointerAddresses: true, DisableCapacities: true} + t.Errorf("%s: returned error %#v, want %#v", test.name, spew.NewFormatter(err), spew.NewFormatter(test.wantErr)) + } + if !reflect.DeepEqual(config, test.wantConfig) { + t.Errorf("%s:\nreturned %v\nwant %v", test.name, config, test.wantConfig) + } + if hash != test.wantHash { + t.Errorf("%s: returned hash %s, want %s", test.name, hash.Hex(), test.wantHash.Hex()) + } else if err == nil { + // Check database content. + stored := GetBlock(db, test.wantHash, 0) + if stored.Hash() != test.wantHash { + t.Errorf("%s: block in DB has hash %s, want %s", test.name, stored.Hash(), test.wantHash) + } + } + } +} diff --git a/core/headerchain.go b/core/headerchain.go index 57da9771b1..e7660cc600 100644 --- a/core/headerchain.go +++ b/core/headerchain.go @@ -97,12 +97,7 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, getValid hc.genesisHeader = hc.GetHeaderByNumber(0) if hc.genesisHeader == nil { - genesisBlock, err := WriteDefaultGenesisBlock(chainDb) - if err != nil { - return nil, err - } - log.Warn("Wrote default Ethereum genesis block") - hc.genesisHeader = genesisBlock.Header() + return nil, ErrNoGenesis } hc.currentHeader = hc.genesisHeader diff --git a/core/mkalloc.go b/core/mkalloc.go new file mode 100644 index 0000000000..565e8c5826 --- /dev/null +++ b/core/mkalloc.go @@ -0,0 +1,85 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// +build none + +/* + + The mkalloc tool creates the genesis allocation constants in genesis_alloc.go + It outputs a const declaration that contains an RLP-encoded list of (address, balance) tuples. + + go run mkalloc.go genesis.json + +*/ +package main + +import ( + "encoding/json" + "fmt" + "math/big" + "os" + "sort" + "strconv" + + "github.com/ethereum/go-ethereum/core" + "github.com/ethereum/go-ethereum/rlp" +) + +type allocItem struct{ Addr, Balance *big.Int } + +type allocList []allocItem + +func (a allocList) Len() int { return len(a) } +func (a allocList) Less(i, j int) bool { return a[i].Addr.Cmp(a[j].Addr) < 0 } +func (a allocList) Swap(i, j int) { a[i], a[j] = a[j], a[i] } + +func makelist(g *core.Genesis) allocList { + a := make(allocList, 0, len(g.Alloc)) + for addr, account := range g.Alloc { + if len(account.Storage) > 0 || len(account.Code) > 0 || account.Nonce != 0 { + panic(fmt.Sprintf("can't encode account %x", addr)) + } + a = append(a, allocItem{addr.Big(), account.Balance}) + } + sort.Sort(a) + return a +} + +func makealloc(g *core.Genesis) string { + a := makelist(g) + data, err := rlp.EncodeToBytes(a) + if err != nil { + panic(err) + } + return strconv.QuoteToASCII(string(data)) +} + +func main() { + if len(os.Args) != 2 { + fmt.Fprintln(os.Stderr, "Usage: mkalloc genesis.json") + os.Exit(1) + } + + g := new(core.Genesis) + file, err := os.Open(os.Args[1]) + if err != nil { + panic(err) + } + if err := json.NewDecoder(file).Decode(g); err != nil { + panic(err) + } + fmt.Println("const allocData =", makealloc(g)) +} diff --git a/core/tx_pool_test.go b/core/tx_pool_test.go index 3a37dd2b99..7655779335 100644 --- a/core/tx_pool_test.go +++ b/core/tx_pool_test.go @@ -42,7 +42,7 @@ func setupTxPool() (*TxPool, *ecdsa.PrivateKey) { statedb, _ := state.New(common.Hash{}, db) key, _ := crypto.GenerateKey() - newPool := NewTxPool(testChainConfig(), new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) + newPool := NewTxPool(params.TestChainConfig, new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) newPool.resetState() return newPool, key @@ -91,7 +91,7 @@ func TestStateChangeDuringPoolReset(t *testing.T) { gasLimitFunc := func() *big.Int { return big.NewInt(1000000000) } - txpool := NewTxPool(testChainConfig(), mux, stateFunc, gasLimitFunc) + txpool := NewTxPool(params.TestChainConfig, mux, stateFunc, gasLimitFunc) txpool.resetState() nonce := txpool.State().GetNonce(address) @@ -564,7 +564,7 @@ func TestTransactionQueueGlobalLimiting(t *testing.T) { db, _ := ethdb.NewMemDatabase() statedb, _ := state.New(common.Hash{}, db) - pool := NewTxPool(testChainConfig(), new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) + pool := NewTxPool(params.TestChainConfig, new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) pool.resetState() // Create a number of test accounts and fund them @@ -713,7 +713,7 @@ func TestTransactionPendingGlobalLimiting(t *testing.T) { db, _ := ethdb.NewMemDatabase() statedb, _ := state.New(common.Hash{}, db) - pool := NewTxPool(testChainConfig(), new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) + pool := NewTxPool(params.TestChainConfig, new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) pool.resetState() // Create a number of test accounts and fund them @@ -759,7 +759,7 @@ func TestTransactionPendingMinimumAllowance(t *testing.T) { db, _ := ethdb.NewMemDatabase() statedb, _ := state.New(common.Hash{}, db) - pool := NewTxPool(testChainConfig(), new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) + pool := NewTxPool(params.TestChainConfig, new(event.TypeMux), func() (*state.StateDB, error) { return statedb, nil }, func() *big.Int { return big.NewInt(1000000) }) pool.resetState() // Create a number of test accounts and fund them diff --git a/core/types/transaction.go b/core/types/transaction.go index a02f9ed009..86948b5b74 100644 --- a/core/types/transaction.go +++ b/core/types/transaction.go @@ -27,7 +27,6 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/crypto" - "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" ) @@ -119,19 +118,6 @@ func newTransaction(nonce uint64, to *common.Address, amount, gasLimit, gasPrice return &Transaction{data: d} } -func pickSigner(rules params.Rules) Signer { - var signer Signer - switch { - case rules.IsEIP155: - signer = NewEIP155Signer(rules.ChainId) - case rules.IsHomestead: - signer = HomesteadSigner{} - default: - signer = FrontierSigner{} - } - return signer -} - // ChainId returns which chain id this transaction was signed for (if at all) func (tx *Transaction) ChainId() *big.Int { return deriveChainId(tx.data.V) diff --git a/eth/backend.go b/eth/backend.go index ef951a6c2e..b8df98976d 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -18,11 +18,9 @@ package eth import ( - "errors" "fmt" "math/big" "regexp" - "strings" "sync" "time" @@ -60,15 +58,17 @@ var ( ) type Config struct { - ChainConfig *params.ChainConfig // chain configuration + // The genesis block, which is inserted if the database is empty. + // If nil, the Ethereum main net block is used. + Genesis *core.Genesis - NetworkId int // Network ID to use for selecting peers to connect to - Genesis string // Genesis JSON to seed the chain database with - FastSync bool // Enables the state download based fast synchronisation algorithm - LightMode bool // Running in light client mode - LightServ int // Maximum percentage of time allowed for serving LES requests - LightPeers int // Maximum number of LES client peers - MaxPeers int // Maximum number of global peers + NetworkId int // Network ID to use for selecting peers to connect to + + FastSync bool // Enables the state download based fast synchronisation algorithm + LightMode bool // Running in light client mode + LightServ int // Maximum percentage of time allowed for serving LES requests + LightPeers int // Maximum number of LES client peers + MaxPeers int // Maximum number of global peers SkipBcVersionCheck bool // e.g. blockchain export DatabaseCache int @@ -100,9 +100,6 @@ type Config struct { GpobaseCorrectionFactor int EnablePreimageRecording bool - - TestGenesisBlock *types.Block // Genesis block to seed the chain database with (testing only!) - TestGenesisState ethdb.Database // Genesis state to seed the database with (testing only!) } type LesServer interface { @@ -155,11 +152,15 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { return nil, err } stopDbUpgrade := upgradeSequentialKeys(chainDb) - if err := SetupGenesisBlock(&chainDb, config); err != nil { - return nil, err + chainConfig, genesisHash, genesisErr := core.SetupGenesisBlock(chainDb, config.Genesis) + if _, ok := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !ok { + return nil, genesisErr } + log.Info("Initialised chain configuration", "config", chainConfig) + eth := &Ethereum{ chainDb: chainDb, + chainConfig: chainConfig, eventMux: ctx.EventMux, accountManager: ctx.AccountManager, pow: CreatePoW(ctx, config), @@ -184,33 +185,18 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { core.WriteBlockChainVersion(chainDb, core.BlockChainVersion) } - // load the genesis block or write a new one if no genesis - // block is prenent in the database. - genesis := core.GetBlock(chainDb, core.GetCanonicalHash(chainDb, 0), 0) - if genesis == nil { - genesis, err = core.WriteDefaultGenesisBlock(chainDb) - if err != nil { - return nil, err - } - log.Warn("Wrote default Ethereum genesis block") - } - - if config.ChainConfig == nil { - return nil, errors.New("missing chain config") - } - core.WriteChainConfig(chainDb, genesis.Hash(), config.ChainConfig) - - eth.chainConfig = config.ChainConfig - - log.Info("Initialised chain configuration", "config", eth.chainConfig) - - eth.blockchain, err = core.NewBlockChain(chainDb, eth.chainConfig, eth.pow, eth.EventMux(), vm.Config{EnablePreimageRecording: config.EnablePreimageRecording}) + vmConfig := vm.Config{EnablePreimageRecording: config.EnablePreimageRecording} + eth.blockchain, err = core.NewBlockChain(chainDb, eth.chainConfig, eth.pow, eth.eventMux, vmConfig) if err != nil { - if err == core.ErrNoGenesis { - return nil, fmt.Errorf(`No chain found. Please initialise a new chain using the "init" subcommand.`) - } return nil, err } + // Rewind the chain in case of an incompatible config upgrade. + if compat, ok := genesisErr.(*params.ConfigCompatError); ok { + log.Warn("Rewinding chain to upgrade configuration", "err", compat) + eth.blockchain.SetHead(compat.RewindTo) + core.WriteChainConfig(chainDb, genesisHash, chainConfig) + } + newPool := core.NewTxPool(eth.chainConfig, eth.EventMux(), eth.blockchain.State, eth.blockchain.GasLimit) eth.txPool = newPool @@ -255,29 +241,6 @@ func CreateDB(ctx *node.ServiceContext, config *Config, name string) (ethdb.Data return db, err } -// SetupGenesisBlock initializes the genesis block for an Ethereum service -func SetupGenesisBlock(chainDb *ethdb.Database, config *Config) error { - // Load up any custom genesis block if requested - if len(config.Genesis) > 0 { - block, err := core.WriteGenesisBlock(*chainDb, strings.NewReader(config.Genesis)) - if err != nil { - return err - } - log.Info("Successfully wrote custom genesis block", "hash", block.Hash()) - } - // Load up a test setup if directly injected - if config.TestGenesisState != nil { - *chainDb = config.TestGenesisState - } - if config.TestGenesisBlock != nil { - core.WriteTd(*chainDb, config.TestGenesisBlock.Hash(), config.TestGenesisBlock.NumberU64(), config.TestGenesisBlock.Difficulty()) - core.WriteBlock(*chainDb, config.TestGenesisBlock) - core.WriteCanonicalHash(*chainDb, config.TestGenesisBlock.Hash(), config.TestGenesisBlock.NumberU64()) - core.WriteHeadBlockHash(*chainDb, config.TestGenesisBlock.Hash()) - } - return nil -} - // CreatePoW creates the required type of PoW instance for an Ethereum service func CreatePoW(ctx *node.ServiceContext, config *Config) pow.PoW { switch { diff --git a/eth/backend_test.go b/eth/backend_test.go index 574731fbe5..f60e3214c3 100644 --- a/eth/backend_test.go +++ b/eth/backend_test.go @@ -30,7 +30,7 @@ import ( func TestMipmapUpgrade(t *testing.T) { db, _ := ethdb.NewMemDatabase() addr := common.BytesToAddress([]byte("jeff")) - genesis := core.WriteGenesisBlockForTesting(db) + genesis := new(core.Genesis).MustCommit(db) chain, receipts := core.GenerateChain(params.TestChainConfig, genesis, db, 10, func(i int, gen *core.BlockGen) { var receipts types.Receipts diff --git a/eth/filters/filter_system_test.go b/eth/filters/filter_system_test.go index d9c245a854..822580b56c 100644 --- a/eth/filters/filter_system_test.go +++ b/eth/filters/filter_system_test.go @@ -72,12 +72,11 @@ func TestBlockSubscription(t *testing.T) { t.Parallel() var ( - mux = new(event.TypeMux) - db, _ = ethdb.NewMemDatabase() - backend = &testBackend{mux, db} - api = NewPublicFilterAPI(backend, false) - - genesis = core.WriteGenesisBlockForTesting(db) + mux = new(event.TypeMux) + db, _ = ethdb.NewMemDatabase() + backend = &testBackend{mux, db} + api = NewPublicFilterAPI(backend, false) + genesis = new(core.Genesis).MustCommit(db) chain, _ = core.GenerateChain(params.TestChainConfig, genesis, db, 10, func(i int, gen *core.BlockGen) {}) chainEvents = []core.ChainEvent{} ) diff --git a/eth/filters/filter_test.go b/eth/filters/filter_test.go index c2dc2b8428..cd5e7cafd5 100644 --- a/eth/filters/filter_test.go +++ b/eth/filters/filter_test.go @@ -60,7 +60,7 @@ func BenchmarkMipmaps(b *testing.B) { ) defer db.Close() - genesis := core.WriteGenesisBlockForTesting(db, core.GenesisAccount{Address: addr1, Balance: big.NewInt(1000000)}) + genesis := core.GenesisBlockForTesting(db, addr1, big.NewInt(1000000)) chain, receipts := core.GenerateChain(params.TestChainConfig, genesis, db, 100010, func(i int, gen *core.BlockGen) { var receipts types.Receipts switch i { @@ -112,7 +112,7 @@ func BenchmarkMipmaps(b *testing.B) { for i := 0; i < b.N; i++ { logs, _ := filter.Find(context.Background()) if len(logs) != 4 { - b.Fatal("expected 4 log, got", len(logs)) + b.Fatal("expected 4 logs, got", len(logs)) } } } @@ -138,7 +138,7 @@ func TestFilters(t *testing.T) { ) defer db.Close() - genesis := core.WriteGenesisBlockForTesting(db, core.GenesisAccount{Address: addr, Balance: big.NewInt(1000000)}) + genesis := core.GenesisBlockForTesting(db, addr, big.NewInt(1000000)) chain, receipts := core.GenerateChain(params.TestChainConfig, genesis, db, 1000, func(i int, gen *core.BlockGen) { var receipts types.Receipts switch i { diff --git a/eth/handler_test.go b/eth/handler_test.go index 683c8f71e7..31435b331d 100644 --- a/eth/handler_test.go +++ b/eth/handler_test.go @@ -315,12 +315,12 @@ func testGetNodeData(t *testing.T, protocol int) { switch i { case 0: // In block 1, the test bank sends account #1 some ether. - tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank.Address), acc1Addr, big.NewInt(10000), bigTxGas, nil, nil), signer, testBankKey) + tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank), acc1Addr, big.NewInt(10000), bigTxGas, nil, nil), signer, testBankKey) block.AddTx(tx) case 1: // In block 2, the test bank sends some more ether to account #1. // acc1Addr passes it on to account #2. - tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank.Address), acc1Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, testBankKey) + tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank), acc1Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, testBankKey) tx2, _ := types.SignTx(types.NewTransaction(block.TxNonce(acc1Addr), acc2Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, acc1Key) block.AddTx(tx1) block.AddTx(tx2) @@ -372,7 +372,7 @@ func testGetNodeData(t *testing.T, protocol int) { for i := 0; i < len(data); i++ { statedb.Put(hashes[i].Bytes(), data[i]) } - accounts := []common.Address{testBank.Address, acc1Addr, acc2Addr} + accounts := []common.Address{testBank, acc1Addr, acc2Addr} for i := uint64(0); i <= pm.blockchain.CurrentBlock().NumberU64(); i++ { trie, _ := state.New(pm.blockchain.GetBlockByNumber(i).Root(), statedb) @@ -407,12 +407,12 @@ func testGetReceipt(t *testing.T, protocol int) { switch i { case 0: // In block 1, the test bank sends account #1 some ether. - tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank.Address), acc1Addr, big.NewInt(10000), bigTxGas, nil, nil), signer, testBankKey) + tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank), acc1Addr, big.NewInt(10000), bigTxGas, nil, nil), signer, testBankKey) block.AddTx(tx) case 1: // In block 2, the test bank sends some more ether to account #1. // acc1Addr passes it on to account #2. - tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank.Address), acc1Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, testBankKey) + tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBank), acc1Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, testBankKey) tx2, _ := types.SignTx(types.NewTransaction(block.TxNonce(acc1Addr), acc2Addr, big.NewInt(1000), bigTxGas, nil, nil), signer, acc1Key) block.AddTx(tx1) block.AddTx(tx2) @@ -471,8 +471,9 @@ func testDAOChallenge(t *testing.T, localForked, remoteForked bool, timeout bool evmux = new(event.TypeMux) pow = new(pow.FakePow) db, _ = ethdb.NewMemDatabase() - genesis = core.WriteGenesisBlockForTesting(db) config = ¶ms.ChainConfig{DAOForkBlock: big.NewInt(1), DAOForkSupport: localForked} + gspec = &core.Genesis{Config: config} + genesis = gspec.MustCommit(db) blockchain, _ = core.NewBlockChain(db, config, pow, evmux, vm.Config{}) ) pm, err := NewProtocolManager(config, false, NetworkId, 1000, evmux, new(testTxPool), pow, blockchain, db) diff --git a/eth/helper_test.go b/eth/helper_test.go index 3ad31394aa..e67b496915 100644 --- a/eth/helper_test.go +++ b/eth/helper_test.go @@ -42,10 +42,7 @@ import ( var ( testBankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") - testBank = core.GenesisAccount{ - Address: crypto.PubkeyToAddress(testBankKey.PublicKey), - Balance: big.NewInt(1000000), - } + testBank = crypto.PubkeyToAddress(testBankKey.PublicKey) ) // newTestProtocolManager creates a new protocol manager for testing purposes, @@ -53,19 +50,22 @@ var ( // channels for different events. func newTestProtocolManager(fastSync bool, blocks int, generator func(int, *core.BlockGen), newtx chan<- []*types.Transaction) (*ProtocolManager, error) { var ( - evmux = new(event.TypeMux) - pow = new(pow.FakePow) - db, _ = ethdb.NewMemDatabase() - genesis = core.WriteGenesisBlockForTesting(db, testBank) - chainConfig = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0)} // homestead set to 0 because of chain maker - blockchain, _ = core.NewBlockChain(db, chainConfig, pow, evmux, vm.Config{}) + evmux = new(event.TypeMux) + pow = new(pow.FakePow) + db, _ = ethdb.NewMemDatabase() + gspec = &core.Genesis{ + Config: params.TestChainConfig, + Alloc: core.GenesisAlloc{testBank: {Balance: big.NewInt(1000000)}}, + } + genesis = gspec.MustCommit(db) + blockchain, _ = core.NewBlockChain(db, gspec.Config, pow, evmux, vm.Config{}) ) - chain, _ := core.GenerateChain(chainConfig, genesis, db, blocks, generator) + chain, _ := core.GenerateChain(gspec.Config, genesis, db, blocks, generator) if _, err := blockchain.InsertChain(chain); err != nil { panic(err) } - pm, err := NewProtocolManager(chainConfig, fastSync, NetworkId, 1000, evmux, &testTxPool{added: newtx}, pow, blockchain, db) + pm, err := NewProtocolManager(gspec.Config, fastSync, NetworkId, 1000, evmux, &testTxPool{added: newtx}, pow, blockchain, db) if err != nil { return nil, err } diff --git a/les/backend.go b/les/backend.go index 3cab75f33c..d656cf41f5 100644 --- a/les/backend.go +++ b/les/backend.go @@ -18,7 +18,6 @@ package les import ( - "errors" "fmt" "time" @@ -74,15 +73,19 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { if err != nil { return nil, err } - if err := eth.SetupGenesisBlock(&chainDb, config); err != nil { - return nil, err + chainConfig, genesisHash, genesisErr := core.SetupGenesisBlock(chainDb, config.Genesis) + if _, isCompat := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !isCompat { + return nil, genesisErr } + log.Info("Initialised chain configuration", "config", chainConfig) + odr := NewLesOdr(chainDb) relay := NewLesTxRelay() eth := &LightEthereum{ odr: odr, relay: relay, chainDb: chainDb, + chainConfig: chainConfig, eventMux: ctx.EventMux, accountManager: ctx.AccountManager, pow: eth.CreatePoW(ctx, config), @@ -91,17 +94,16 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { solcPath: config.SolcPath, } - if config.ChainConfig == nil { - return nil, errors.New("missing chain config") - } - eth.chainConfig = config.ChainConfig eth.blockchain, err = light.NewLightChain(odr, eth.chainConfig, eth.pow, eth.eventMux) if err != nil { - if err == core.ErrNoGenesis { - return nil, fmt.Errorf(`Genesis block not found. Please supply a genesis block with the "--genesis /path/to/file" argument`) - } return nil, err } + // Rewind the chain in case of an incompatible config upgrade. + if compat, ok := genesisErr.(*params.ConfigCompatError); ok { + log.Warn("Rewinding chain to upgrade configuration", "err", compat) + eth.blockchain.SetHead(compat.RewindTo) + core.WriteChainConfig(chainDb, genesisHash, chainConfig) + } eth.txPool = light.NewTxPool(eth.chainConfig, eth.eventMux, eth.blockchain, eth.relay) if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.LightMode, config.NetworkId, eth.eventMux, eth.pow, eth.blockchain, nil, chainDb, odr, relay); err != nil { diff --git a/les/helper_test.go b/les/helper_test.go index 3e8ce57b6e..f37bec80e1 100644 --- a/les/helper_test.go +++ b/les/helper_test.go @@ -134,28 +134,31 @@ func testRCL() RequestCostList { // channels for different events. func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *core.BlockGen)) (*ProtocolManager, ethdb.Database, *LesOdr, error) { var ( - evmux = new(event.TypeMux) - pow = new(pow.FakePow) - db, _ = ethdb.NewMemDatabase() - genesis = core.WriteGenesisBlockForTesting(db, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) - chainConfig = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0)} // homestead set to 0 because of chain maker - odr *LesOdr - chain BlockChain + evmux = new(event.TypeMux) + pow = new(pow.FakePow) + db, _ = ethdb.NewMemDatabase() + gspec = core.Genesis{ + Config: params.TestChainConfig, + Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}, + } + genesis = gspec.MustCommit(db) + odr *LesOdr + chain BlockChain ) if lightSync { odr = NewLesOdr(db) - chain, _ = light.NewLightChain(odr, chainConfig, pow, evmux) + chain, _ = light.NewLightChain(odr, gspec.Config, pow, evmux) } else { - blockchain, _ := core.NewBlockChain(db, chainConfig, pow, evmux, vm.Config{}) - gchain, _ := core.GenerateChain(chainConfig, genesis, db, blocks, generator) + blockchain, _ := core.NewBlockChain(db, gspec.Config, pow, evmux, vm.Config{}) + gchain, _ := core.GenerateChain(gspec.Config, genesis, db, blocks, generator) if _, err := blockchain.InsertChain(gchain); err != nil { panic(err) } chain = blockchain } - pm, err := NewProtocolManager(chainConfig, lightSync, NetworkId, evmux, pow, chain, nil, db, odr, nil) + pm, err := NewProtocolManager(gspec.Config, lightSync, NetworkId, evmux, pow, chain, nil, db, odr, nil) if err != nil { return nil, nil, nil, err } diff --git a/les/server.go b/les/server.go index 04bfa02926..5957add367 100644 --- a/les/server.go +++ b/les/server.go @@ -45,7 +45,7 @@ type LesServer struct { } func NewLesServer(eth *eth.Ethereum, config *eth.Config) (*LesServer, error) { - pm, err := NewProtocolManager(config.ChainConfig, false, config.NetworkId, eth.EventMux(), eth.Pow(), eth.BlockChain(), eth.TxPool(), eth.ChainDb(), nil, nil) + pm, err := NewProtocolManager(eth.BlockChain().Config(), false, config.NetworkId, eth.EventMux(), eth.Pow(), eth.BlockChain(), eth.TxPool(), eth.ChainDb(), nil, nil) if err != nil { return nil, err } diff --git a/light/lightchain.go b/light/lightchain.go index 82b7a5866b..98fb024f0b 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -96,11 +96,7 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux bc.genesisBlock, _ = bc.GetBlockByNumber(NoOdr, 0) if bc.genesisBlock == nil { - bc.genesisBlock, err = core.WriteDefaultGenesisBlock(odr.Database()) - if err != nil { - return nil, err - } - log.Warn("Wrote default ethereum genesis block") + return nil, core.ErrNoGenesis } if bc.genesisBlock.Hash() == params.MainNetGenesisHash { diff --git a/light/lightchain_test.go b/light/lightchain_test.go index 7460fd1a31..e9236f1fd2 100644 --- a/light/lightchain_test.go +++ b/light/lightchain_test.go @@ -20,7 +20,6 @@ import ( "context" "fmt" "math/big" - "runtime" "testing" "github.com/ethereum/go-ethereum/common" @@ -30,7 +29,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" - "github.com/hashicorp/golang-lru" ) // So we can deterministically seed different blockchains @@ -59,14 +57,10 @@ func testChainConfig() *params.ChainConfig { // chain. Depending on the full flag, if creates either a full block chain or a // header only chain. func newCanonical(n int) (ethdb.Database, *LightChain, error) { - // Create te new chain database db, _ := ethdb.NewMemDatabase() - evmux := &event.TypeMux{} - - // Initialize a fresh chain with only a genesis block - genesis, _ := core.WriteTestNetGenesisBlock(db) - - blockchain, _ := NewLightChain(&dummyOdr{db: db}, testChainConfig(), pow.FakePow{}, evmux) + gspec := core.Genesis{Config: testChainConfig()} + genesis := gspec.MustCommit(db) + blockchain, _ := NewLightChain(&dummyOdr{db: db}, gspec.Config, pow.FakePow{}, new(event.TypeMux)) // Create and inject the requested chain if n == 0 { return db, blockchain, nil @@ -77,21 +71,20 @@ func newCanonical(n int) (ethdb.Database, *LightChain, error) { return db, blockchain, err } -func init() { - runtime.GOMAXPROCS(runtime.NumCPU()) -} - -func theLightChain(db ethdb.Database, t *testing.T) *LightChain { - var eventMux event.TypeMux - core.WriteTestNetGenesisBlock(db) - LightChain, err := NewLightChain(&dummyOdr{db: db}, testChainConfig(), pow.NewTestEthash(), &eventMux) - if err != nil { - t.Error("failed creating LightChain:", err) - t.FailNow() - return nil +// newTestLightChain creates a LightChain that doesn't validate anything. +func newTestLightChain() *LightChain { + db, _ := ethdb.NewMemDatabase() + gspec := &core.Genesis{ + Difficulty: big.NewInt(1), + Config: testChainConfig(), } - - return LightChain + gspec.MustCommit(db) + lc, err := NewLightChain(&dummyOdr{db: db}, gspec.Config, pow.NewTestEthash(), new(event.TypeMux)) + if err != nil { + panic(err) + } + lc.SetValidator(bproc{}) + return lc } // Test fork of length N starting from block i @@ -302,20 +295,6 @@ func (odr *dummyOdr) Retrieve(ctx context.Context, req OdrRequest) error { return nil } -func chm(genesis *types.Block, db ethdb.Database) *LightChain { - odr := &dummyOdr{db: db} - var eventMux event.TypeMux - bc := &LightChain{odr: odr, chainDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: pow.FakePow{}} - bc.hc, _ = core.NewHeaderChain(db, testChainConfig(), bc.Validator, bc.getProcInterrupt) - bc.bodyCache, _ = lru.New(100) - bc.bodyRLPCache, _ = lru.New(100) - bc.blockCache, _ = lru.New(100) - bc.SetValidator(bproc{}) - bc.ResetWithGenesisBlock(genesis) - - return bc -} - // Tests that reorganizing a long difficult chain after a short easy one // overwrites the canonical numbers and links in the database. func TestReorgLongHeaders(t *testing.T) { @@ -329,14 +308,11 @@ func TestReorgShortHeaders(t *testing.T) { } func testReorg(t *testing.T, first, second []int, td int64) { - // Create a pristine block chain - db, _ := ethdb.NewMemDatabase() - genesis, _ := core.WriteTestNetGenesisBlock(db) - bc := chm(genesis, db) + bc := newTestLightChain() // Insert an easy and a difficult chain afterwards - bc.InsertHeaderChain(makeHeaderChainWithDiff(genesis, first, 11), 1) - bc.InsertHeaderChain(makeHeaderChainWithDiff(genesis, second, 22), 1) + bc.InsertHeaderChain(makeHeaderChainWithDiff(bc.genesisBlock, first, 11), 1) + bc.InsertHeaderChain(makeHeaderChainWithDiff(bc.genesisBlock, second, 22), 1) // Check that the chain is valid number and link wise prev := bc.CurrentHeader() for header := bc.GetHeaderByNumber(bc.CurrentHeader().Number.Uint64() - 1); header.Number.Uint64() != 0; prev, header = header, bc.GetHeaderByNumber(header.Number.Uint64()-1) { @@ -345,7 +321,7 @@ func testReorg(t *testing.T, first, second []int, td int64) { } } // Make sure the chain total difficulty is the correct one - want := new(big.Int).Add(genesis.Difficulty(), big.NewInt(td)) + want := new(big.Int).Add(bc.genesisBlock.Difficulty(), big.NewInt(td)) if have := bc.GetTdByHash(bc.CurrentHeader().Hash()); have.Cmp(want) != 0 { t.Errorf("total difficulty mismatch: have %v, want %v", have, want) } @@ -353,14 +329,11 @@ func testReorg(t *testing.T, first, second []int, td int64) { // Tests that the insertion functions detect banned hashes. func TestBadHeaderHashes(t *testing.T) { - // Create a pristine block chain - db, _ := ethdb.NewMemDatabase() - genesis, _ := core.WriteTestNetGenesisBlock(db) - bc := chm(genesis, db) + bc := newTestLightChain() // Create a chain, ban a hash and try to import var err error - headers := makeHeaderChainWithDiff(genesis, []int{1, 2, 4}, 10) + headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 4}, 10) core.BadHashes[headers[2].Hash()] = true _, err = bc.InsertHeaderChain(headers, 1) if !core.IsBadHashError(err) { @@ -371,13 +344,10 @@ func TestBadHeaderHashes(t *testing.T) { // Tests that bad hashes are detected on boot, and the chan rolled back to a // good state prior to the bad hash. func TestReorgBadHeaderHashes(t *testing.T) { - // Create a pristine block chain - db, _ := ethdb.NewMemDatabase() - genesis, _ := core.WriteTestNetGenesisBlock(db) - bc := chm(genesis, db) + bc := newTestLightChain() // Create a chain, import and ban aferwards - headers := makeHeaderChainWithDiff(genesis, []int{1, 2, 3, 4}, 10) + headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 3, 4}, 10) if _, err := bc.InsertHeaderChain(headers, 1); err != nil { t.Fatalf("failed to import headers: %v", err) @@ -387,8 +357,9 @@ func TestReorgBadHeaderHashes(t *testing.T) { } core.BadHashes[headers[3].Hash()] = true defer func() { delete(core.BadHashes, headers[3].Hash()) }() - // Create a new chain manager and check it rolled back the state - ncm, err := NewLightChain(&dummyOdr{db: db}, testChainConfig(), pow.FakePow{}, new(event.TypeMux)) + + // Create a new LightChain and check that it rolled back the state. + ncm, err := NewLightChain(&dummyOdr{db: bc.chainDb}, testChainConfig(), pow.FakePow{}, new(event.TypeMux)) if err != nil { t.Fatalf("failed to create new chain manager: %v", err) } diff --git a/light/odr_test.go b/light/odr_test.go index ba82ec04ff..37d9999941 100644 --- a/light/odr_test.go +++ b/light/odr_test.go @@ -251,9 +251,10 @@ func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { pow = new(pow.FakePow) sdb, _ = ethdb.NewMemDatabase() ldb, _ = ethdb.NewMemDatabase() - genesis = core.WriteGenesisBlockForTesting(sdb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) + gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}} + genesis = gspec.MustCommit(sdb) ) - core.WriteGenesisBlockForTesting(ldb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) + gspec.MustCommit(ldb) // Assemble the test environment blockchain, _ := core.NewBlockChain(sdb, testChainConfig(), pow, evmux, vm.Config{}) chainConfig := ¶ms.ChainConfig{HomesteadBlock: new(big.Int)} diff --git a/light/txpool_test.go b/light/txpool_test.go index e93955511b..2b5fa7116d 100644 --- a/light/txpool_test.go +++ b/light/txpool_test.go @@ -86,9 +86,10 @@ func TestTxPool(t *testing.T) { pow = new(pow.FakePow) sdb, _ = ethdb.NewMemDatabase() ldb, _ = ethdb.NewMemDatabase() - genesis = core.WriteGenesisBlockForTesting(sdb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) + gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}} + genesis = gspec.MustCommit(sdb) ) - core.WriteGenesisBlockForTesting(ldb, core.GenesisAccount{Address: testBankAddress, Balance: testBankFunds}) + gspec.MustCommit(ldb) // Assemble the test environment blockchain, _ := core.NewBlockChain(sdb, testChainConfig(), pow, evmux, vm.Config{}) chainConfig := ¶ms.ChainConfig{HomesteadBlock: new(big.Int)} diff --git a/mobile/geth.go b/mobile/geth.go index 62791652d2..e070cec56d 100644 --- a/mobile/geth.go +++ b/mobile/geth.go @@ -20,10 +20,12 @@ package geth import ( + "encoding/json" "fmt" "math/big" "path/filepath" + "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/ethclient" "github.com/ethereum/go-ethereum/ethstats" @@ -92,6 +94,18 @@ func NewNodeConfig() *NodeConfig { return &config } +// SetMainnet sets up the node for use on the Ethereum mainnet. +func (cfg *NodeConfig) SetMainnet() { + cfg.EthereumGenesis = "" + cfg.EthereumChainConfig = MainnetChainConfig() +} + +// SetTestnet sets up the node for use on the Ethereum testnet. +func (cfg *NodeConfig) SetTestnet() { + cfg.EthereumGenesis = TestnetGenesis() + cfg.EthereumChainConfig = TestnetChainConfig() +} + // Node represents a Geth Ethereum node instance. type Node struct { node *node.Node @@ -127,20 +141,34 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) { if err != nil { return nil, err } + + var genesis *core.Genesis + if config.EthereumGenesis != "" { + genesis = new(core.Genesis) + if err := json.Unmarshal([]byte(config.EthereumGenesis), genesis); err != nil { + return nil, fmt.Errorf("invalid EthereumGenesis: %v", err) + } + } + if config.EthereumChainConfig != nil { + if genesis == nil { + genesis = core.DefaultGenesisBlock() + } + genesis.Config = ¶ms.ChainConfig{ + ChainId: big.NewInt(config.EthereumChainConfig.ChainID), + HomesteadBlock: big.NewInt(config.EthereumChainConfig.HomesteadBlock), + DAOForkBlock: big.NewInt(config.EthereumChainConfig.DAOForkBlock), + DAOForkSupport: config.EthereumChainConfig.DAOForkSupport, + EIP150Block: big.NewInt(config.EthereumChainConfig.EIP150Block), + EIP150Hash: config.EthereumChainConfig.EIP150Hash.hash, + EIP155Block: big.NewInt(config.EthereumChainConfig.EIP155Block), + EIP158Block: big.NewInt(config.EthereumChainConfig.EIP158Block), + } + } + // Register the Ethereum protocol if requested if config.EthereumEnabled { ethConf := ð.Config{ - ChainConfig: ¶ms.ChainConfig{ - ChainId: big.NewInt(config.EthereumChainConfig.ChainID), - HomesteadBlock: big.NewInt(config.EthereumChainConfig.HomesteadBlock), - DAOForkBlock: big.NewInt(config.EthereumChainConfig.DAOForkBlock), - DAOForkSupport: config.EthereumChainConfig.DAOForkSupport, - EIP150Block: big.NewInt(config.EthereumChainConfig.EIP150Block), - EIP150Hash: config.EthereumChainConfig.EIP150Hash.hash, - EIP155Block: big.NewInt(config.EthereumChainConfig.EIP155Block), - EIP158Block: big.NewInt(config.EthereumChainConfig.EIP158Block), - }, - Genesis: config.EthereumGenesis, + Genesis: genesis, LightMode: true, DatabaseCache: config.EthereumDatabaseCache, NetworkId: config.EthereumNetworkID, diff --git a/mobile/params.go b/mobile/params.go index 87747c7b0d..6ca0c1b3a3 100644 --- a/mobile/params.go +++ b/mobile/params.go @@ -19,6 +19,8 @@ package geth import ( + "encoding/json" + "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/p2p/discv5" "github.com/ethereum/go-ethereum/params" @@ -60,7 +62,11 @@ func TestnetChainConfig() *ChainConfig { // TestnetGenesis returns the JSON spec to use for the Ethereum test network. func TestnetGenesis() string { - return core.DefaultTestnetGenesisBlock() + enc, err := json.Marshal(core.DefaultTestnetGenesisBlock()) + if err != nil { + panic(err) + } + return string(enc) } // ChainConfig is the core config which determines the blockchain settings. diff --git a/params/config.go b/params/config.go index ee993fe4a1..47d7c2ad06 100644 --- a/params/config.go +++ b/params/config.go @@ -23,39 +23,43 @@ import ( "github.com/ethereum/go-ethereum/common" ) -// MainnetChainConfig is the chain parameters to run a node on the main network. -var MainnetChainConfig = &ChainConfig{ - ChainId: MainNetChainID, - HomesteadBlock: MainNetHomesteadBlock, - DAOForkBlock: MainNetDAOForkBlock, - DAOForkSupport: true, - EIP150Block: MainNetHomesteadGasRepriceBlock, - EIP150Hash: MainNetHomesteadGasRepriceHash, - EIP155Block: MainNetSpuriousDragon, - EIP158Block: MainNetSpuriousDragon, -} +var ( + // MainnetChainConfig is the chain parameters to run a node on the main network. + MainnetChainConfig = &ChainConfig{ + ChainId: MainNetChainID, + HomesteadBlock: MainNetHomesteadBlock, + DAOForkBlock: MainNetDAOForkBlock, + DAOForkSupport: true, + EIP150Block: MainNetHomesteadGasRepriceBlock, + EIP150Hash: MainNetHomesteadGasRepriceHash, + EIP155Block: MainNetSpuriousDragon, + EIP158Block: MainNetSpuriousDragon, + } -// TestnetChainConfig is the chain parameters to run a node on the test network. -var TestnetChainConfig = &ChainConfig{ - ChainId: big.NewInt(3), - HomesteadBlock: big.NewInt(0), - DAOForkBlock: nil, - DAOForkSupport: true, - EIP150Block: big.NewInt(0), - EIP150Hash: common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d"), - EIP155Block: big.NewInt(10), - EIP158Block: big.NewInt(10), -} + // TestnetChainConfig contains the chain parameters to run a node on the ropsten test network. + TestnetChainConfig = &ChainConfig{ + ChainId: big.NewInt(3), + HomesteadBlock: big.NewInt(0), + DAOForkBlock: nil, + DAOForkSupport: true, + EIP150Block: big.NewInt(0), + EIP150Hash: common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d"), + EIP155Block: big.NewInt(10), + EIP158Block: big.NewInt(10), + } -// AllProtocolChanges contains every protocol change (EIPs) -// introduced and accepted by the Ethereum core developers. -// -// This configuration is intentionally not using keyed fields. -// This configuration must *always* have all forks enabled, which -// means that all fields must be set at all times. This forces -// anyone adding flags to the config to also have to set these -// fields. -var AllProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0)} + // AllProtocolChanges contains every protocol change (EIPs) + // introduced and accepted by the Ethereum core developers. + // TestChainConfig is like AllProtocolChanges but has chain ID 1. + // + // This configuration is intentionally not using keyed fields. + // This configuration must *always* have all forks enabled, which + // means that all fields must be set at all times. This forces + // anyone adding flags to the config to also have to set these + // fields. + AllProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0)} + TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0)} +) // ChainConfig is the core config which determines the blockchain settings. // @@ -77,7 +81,7 @@ type ChainConfig struct { EIP158Block *big.Int `json:"eip158Block"` // EIP158 HF block } -// String implements the Stringer interface. +// String implements the fmt.Stringer interface. func (c *ChainConfig) String() string { return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v}", c.ChainId, @@ -90,17 +94,26 @@ func (c *ChainConfig) String() string { ) } -var ( - TestChainConfig = &ChainConfig{big.NewInt(1), new(big.Int), new(big.Int), true, new(big.Int), common.Hash{}, new(big.Int), new(big.Int)} - TestRules = TestChainConfig.Rules(new(big.Int)) -) - // IsHomestead returns whether num is either equal to the homestead block or greater. func (c *ChainConfig) IsHomestead(num *big.Int) bool { - if c.HomesteadBlock == nil || num == nil { - return false - } - return num.Cmp(c.HomesteadBlock) >= 0 + return isForked(c.HomesteadBlock, num) +} + +// IsDAO returns whether num is either equal to the DAO fork block or greater. +func (c *ChainConfig) IsDAOFork(num *big.Int) bool { + return isForked(c.DAOForkBlock, num) +} + +func (c *ChainConfig) IsEIP150(num *big.Int) bool { + return isForked(c.EIP150Block, num) +} + +func (c *ChainConfig) IsEIP155(num *big.Int) bool { + return isForked(c.EIP155Block, num) +} + +func (c *ChainConfig) IsEIP158(num *big.Int) bool { + return isForked(c.EIP158Block, num) } // GasTable returns the gas table corresponding to the current phase (homestead or homestead reprice). @@ -110,51 +123,110 @@ func (c *ChainConfig) GasTable(num *big.Int) GasTable { if num == nil { return GasTableHomestead } - switch { - case c.EIP158Block != nil && num.Cmp(c.EIP158Block) >= 0: + case c.IsEIP158(num): return GasTableEIP158 - case c.EIP150Block != nil && num.Cmp(c.EIP150Block) >= 0: + case c.IsEIP150(num): return GasTableHomesteadGasRepriceFork default: return GasTableHomestead } } -func (c *ChainConfig) IsEIP150(num *big.Int) bool { - if c.EIP150Block == nil || num == nil { +// CheckCompatible checks whether scheduled fork transitions have been imported +// with a mismatching chain configuration. +func (c *ChainConfig) CheckCompatible(newcfg *ChainConfig, height uint64) *ConfigCompatError { + bhead := new(big.Int).SetUint64(height) + + // Iterate checkCompatible to find the lowest conflict. + var lasterr *ConfigCompatError + for { + err := c.checkCompatible(newcfg, bhead) + if err == nil || (lasterr != nil && err.RewindTo == lasterr.RewindTo) { + break + } + lasterr = err + bhead.SetUint64(err.RewindTo) + } + return lasterr +} + +func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *ConfigCompatError { + if isForkIncompatible(c.HomesteadBlock, newcfg.HomesteadBlock, head) { + return newCompatError("Homestead fork block", c.HomesteadBlock, newcfg.HomesteadBlock) + } + if isForkIncompatible(c.DAOForkBlock, newcfg.DAOForkBlock, head) { + return newCompatError("DAO fork block", c.DAOForkBlock, newcfg.DAOForkBlock) + } + if c.IsDAOFork(head) && c.DAOForkSupport != newcfg.DAOForkSupport { + return newCompatError("DAO fork support flag", c.DAOForkBlock, newcfg.DAOForkBlock) + } + if isForkIncompatible(c.EIP150Block, newcfg.EIP150Block, head) { + return newCompatError("EIP150 fork block", c.EIP150Block, newcfg.EIP150Block) + } + if isForkIncompatible(c.EIP155Block, newcfg.EIP155Block, head) { + return newCompatError("EIP155 fork block", c.EIP155Block, newcfg.EIP155Block) + } + if isForkIncompatible(c.EIP158Block, newcfg.EIP158Block, head) { + return newCompatError("EIP158 fork block", c.EIP158Block, newcfg.EIP158Block) + } + if c.IsEIP158(head) && !configNumEqual(c.ChainId, newcfg.ChainId) { + return newCompatError("EIP158 chain ID", c.EIP158Block, newcfg.EIP158Block) + } + return nil +} + +// isForkIncompatible returns true if a fork scheduled at s1 cannot be rescheduled to +// block s2 because head is already past the fork. +func isForkIncompatible(s1, s2, head *big.Int) bool { + return (isForked(s1, head) || isForked(s2, head)) && !configNumEqual(s1, s2) +} + +// isForked returns whether a fork scheduled at block s is active at the given head block. +func isForked(s, head *big.Int) bool { + if s == nil || head == nil { return false } - return num.Cmp(c.EIP150Block) >= 0 - + return s.Cmp(head) <= 0 } -func (c *ChainConfig) IsEIP155(num *big.Int) bool { - if c.EIP155Block == nil || num == nil { - return false +func configNumEqual(x, y *big.Int) bool { + if x == nil { + return y == nil } - return num.Cmp(c.EIP155Block) >= 0 - -} - -func (c *ChainConfig) IsEIP158(num *big.Int) bool { - if c.EIP158Block == nil || num == nil { - return false + if y == nil { + return x == nil } - return num.Cmp(c.EIP158Block) >= 0 - + return x.Cmp(y) == 0 } -// Rules wraps ChainConfig and is merely syntatic sugar or can be used for functions -// that do not have or require information about the block. -// -// Rules is a one time interface meaning that it shouldn't be used in between transition -// phases. -type Rules struct { - ChainId *big.Int - IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool +// ConfigCompatError is raised if the locally-stored blockchain is initialised with a +// ChainConfig that would alter the past. +type ConfigCompatError struct { + What string + // block numbers of the stored and new configurations + StoredConfig, NewConfig *big.Int + // the block number to which the local chain must be rewound to correct the error + RewindTo uint64 } -func (c *ChainConfig) Rules(num *big.Int) Rules { - return Rules{ChainId: new(big.Int).Set(c.ChainId), IsHomestead: c.IsHomestead(num), IsEIP150: c.IsEIP150(num), IsEIP155: c.IsEIP155(num), IsEIP158: c.IsEIP158(num)} +func newCompatError(what string, storedblock, newblock *big.Int) *ConfigCompatError { + var rew *big.Int + switch { + case storedblock == nil: + rew = newblock + case newblock == nil || storedblock.Cmp(newblock) < 0: + rew = storedblock + default: + rew = newblock + } + err := &ConfigCompatError{what, storedblock, newblock, 0} + if rew != nil && rew.Sign() > 0 { + err.RewindTo = rew.Uint64() - 1 + } + return err +} + +func (err *ConfigCompatError) Error() string { + return fmt.Sprintf("mismatching %s in database (have %d, want %d, rewindto %d)", err.What, err.StoredConfig, err.NewConfig, err.RewindTo) } diff --git a/params/config_test.go b/params/config_test.go new file mode 100644 index 0000000000..487dc380c5 --- /dev/null +++ b/params/config_test.go @@ -0,0 +1,81 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package params + +import ( + "math/big" + "reflect" + "testing" +) + +func TestCheckCompatible(t *testing.T) { + type test struct { + stored, new *ChainConfig + head uint64 + wantErr *ConfigCompatError + } + tests := []test{ + {stored: AllProtocolChanges, new: AllProtocolChanges, head: 0, wantErr: nil}, + {stored: AllProtocolChanges, new: AllProtocolChanges, head: 100, wantErr: nil}, + { + stored: &ChainConfig{EIP150Block: big.NewInt(10)}, + new: &ChainConfig{EIP150Block: big.NewInt(20)}, + head: 9, + wantErr: nil, + }, + { + stored: AllProtocolChanges, + new: &ChainConfig{HomesteadBlock: nil}, + head: 3, + wantErr: &ConfigCompatError{ + What: "Homestead fork block", + StoredConfig: big.NewInt(0), + NewConfig: nil, + RewindTo: 0, + }, + }, + { + stored: AllProtocolChanges, + new: &ChainConfig{HomesteadBlock: big.NewInt(1)}, + head: 3, + wantErr: &ConfigCompatError{ + What: "Homestead fork block", + StoredConfig: big.NewInt(0), + NewConfig: big.NewInt(1), + RewindTo: 0, + }, + }, + { + stored: &ChainConfig{HomesteadBlock: big.NewInt(30), EIP150Block: big.NewInt(10)}, + new: &ChainConfig{HomesteadBlock: big.NewInt(25), EIP150Block: big.NewInt(20)}, + head: 25, + wantErr: &ConfigCompatError{ + What: "EIP150 fork block", + StoredConfig: big.NewInt(10), + NewConfig: big.NewInt(20), + RewindTo: 9, + }, + }, + } + + for _, test := range tests { + err := test.stored.CheckCompatible(test.new, test.head) + if !reflect.DeepEqual(err, test.wantErr) { + t.Errorf("error mismatch:\nstored: %v\nnew: %v\nhead: %v\nerr: %v\nwant: %v", test.stored, test.new, test.head, err, test.wantErr) + } + } +} diff --git a/params/dao.go b/params/dao.go index 3e2a68cc9e..ef8e838ff7 100644 --- a/params/dao.go +++ b/params/dao.go @@ -17,8 +17,6 @@ package params import ( - "encoding/json" - "fmt" "math/big" "github.com/ethereum/go-ethereum/common" @@ -47,372 +45,123 @@ var DAORefundContract = common.HexToAddress("0xbf4ed7b27f1d666546e30d74d50d173d2 // DAODrainList is the list of accounts whose full balances will be moved into a // refund contract at the beginning of the dao-fork block. -var DAODrainList []common.Address - -func init() { - // Parse the list of DAO accounts to drain - var list []map[string]string - if err := json.Unmarshal([]byte(daoDrainListJSON), &list); err != nil { - panic(fmt.Errorf("Failed to parse DAO drain list: %v", err)) - } - // Collect all the accounts that need draining - for _, dao := range list { - DAODrainList = append(DAODrainList, common.HexToAddress(dao["address"])) - DAODrainList = append(DAODrainList, common.HexToAddress(dao["extraBalanceAccount"])) +func DAODrainList() []common.Address { + return []common.Address{ + common.HexToAddress("0xd4fe7bc31cedb7bfb8a345f31e668033056b2728"), + common.HexToAddress("0xb3fb0e5aba0e20e5c49d252dfd30e102b171a425"), + common.HexToAddress("0x2c19c7f9ae8b751e37aeb2d93a699722395ae18f"), + common.HexToAddress("0xecd135fa4f61a655311e86238c92adcd779555d2"), + common.HexToAddress("0x1975bd06d486162d5dc297798dfc41edd5d160a7"), + common.HexToAddress("0xa3acf3a1e16b1d7c315e23510fdd7847b48234f6"), + common.HexToAddress("0x319f70bab6845585f412ec7724b744fec6095c85"), + common.HexToAddress("0x06706dd3f2c9abf0a21ddcc6941d9b86f0596936"), + common.HexToAddress("0x5c8536898fbb74fc7445814902fd08422eac56d0"), + common.HexToAddress("0x6966ab0d485353095148a2155858910e0965b6f9"), + common.HexToAddress("0x779543a0491a837ca36ce8c635d6154e3c4911a6"), + common.HexToAddress("0x2a5ed960395e2a49b1c758cef4aa15213cfd874c"), + common.HexToAddress("0x5c6e67ccd5849c0d29219c4f95f1a7a93b3f5dc5"), + common.HexToAddress("0x9c50426be05db97f5d64fc54bf89eff947f0a321"), + common.HexToAddress("0x200450f06520bdd6c527622a273333384d870efb"), + common.HexToAddress("0xbe8539bfe837b67d1282b2b1d61c3f723966f049"), + common.HexToAddress("0x6b0c4d41ba9ab8d8cfb5d379c69a612f2ced8ecb"), + common.HexToAddress("0xf1385fb24aad0cd7432824085e42aff90886fef5"), + common.HexToAddress("0xd1ac8b1ef1b69ff51d1d401a476e7e612414f091"), + common.HexToAddress("0x8163e7fb499e90f8544ea62bbf80d21cd26d9efd"), + common.HexToAddress("0x51e0ddd9998364a2eb38588679f0d2c42653e4a6"), + common.HexToAddress("0x627a0a960c079c21c34f7612d5d230e01b4ad4c7"), + common.HexToAddress("0xf0b1aa0eb660754448a7937c022e30aa692fe0c5"), + common.HexToAddress("0x24c4d950dfd4dd1902bbed3508144a54542bba94"), + common.HexToAddress("0x9f27daea7aca0aa0446220b98d028715e3bc803d"), + common.HexToAddress("0xa5dc5acd6a7968a4554d89d65e59b7fd3bff0f90"), + common.HexToAddress("0xd9aef3a1e38a39c16b31d1ace71bca8ef58d315b"), + common.HexToAddress("0x63ed5a272de2f6d968408b4acb9024f4cc208ebf"), + common.HexToAddress("0x6f6704e5a10332af6672e50b3d9754dc460dfa4d"), + common.HexToAddress("0x77ca7b50b6cd7e2f3fa008e24ab793fd56cb15f6"), + common.HexToAddress("0x492ea3bb0f3315521c31f273e565b868fc090f17"), + common.HexToAddress("0x0ff30d6de14a8224aa97b78aea5388d1c51c1f00"), + common.HexToAddress("0x9ea779f907f0b315b364b0cfc39a0fde5b02a416"), + common.HexToAddress("0xceaeb481747ca6c540a000c1f3641f8cef161fa7"), + common.HexToAddress("0xcc34673c6c40e791051898567a1222daf90be287"), + common.HexToAddress("0x579a80d909f346fbfb1189493f521d7f48d52238"), + common.HexToAddress("0xe308bd1ac5fda103967359b2712dd89deffb7973"), + common.HexToAddress("0x4cb31628079fb14e4bc3cd5e30c2f7489b00960c"), + common.HexToAddress("0xac1ecab32727358dba8962a0f3b261731aad9723"), + common.HexToAddress("0x4fd6ace747f06ece9c49699c7cabc62d02211f75"), + common.HexToAddress("0x440c59b325d2997a134c2c7c60a8c61611212bad"), + common.HexToAddress("0x4486a3d68fac6967006d7a517b889fd3f98c102b"), + common.HexToAddress("0x9c15b54878ba618f494b38f0ae7443db6af648ba"), + common.HexToAddress("0x27b137a85656544b1ccb5a0f2e561a5703c6a68f"), + common.HexToAddress("0x21c7fdb9ed8d291d79ffd82eb2c4356ec0d81241"), + common.HexToAddress("0x23b75c2f6791eef49c69684db4c6c1f93bf49a50"), + common.HexToAddress("0x1ca6abd14d30affe533b24d7a21bff4c2d5e1f3b"), + common.HexToAddress("0xb9637156d330c0d605a791f1c31ba5890582fe1c"), + common.HexToAddress("0x6131c42fa982e56929107413a9d526fd99405560"), + common.HexToAddress("0x1591fc0f688c81fbeb17f5426a162a7024d430c2"), + common.HexToAddress("0x542a9515200d14b68e934e9830d91645a980dd7a"), + common.HexToAddress("0xc4bbd073882dd2add2424cf47d35213405b01324"), + common.HexToAddress("0x782495b7b3355efb2833d56ecb34dc22ad7dfcc4"), + common.HexToAddress("0x58b95c9a9d5d26825e70a82b6adb139d3fd829eb"), + common.HexToAddress("0x3ba4d81db016dc2890c81f3acec2454bff5aada5"), + common.HexToAddress("0xb52042c8ca3f8aa246fa79c3feaa3d959347c0ab"), + common.HexToAddress("0xe4ae1efdfc53b73893af49113d8694a057b9c0d1"), + common.HexToAddress("0x3c02a7bc0391e86d91b7d144e61c2c01a25a79c5"), + common.HexToAddress("0x0737a6b837f97f46ebade41b9bc3e1c509c85c53"), + common.HexToAddress("0x97f43a37f595ab5dd318fb46e7a155eae057317a"), + common.HexToAddress("0x52c5317c848ba20c7504cb2c8052abd1fde29d03"), + common.HexToAddress("0x4863226780fe7c0356454236d3b1c8792785748d"), + common.HexToAddress("0x5d2b2e6fcbe3b11d26b525e085ff818dae332479"), + common.HexToAddress("0x5f9f3392e9f62f63b8eac0beb55541fc8627f42c"), + common.HexToAddress("0x057b56736d32b86616a10f619859c6cd6f59092a"), + common.HexToAddress("0x9aa008f65de0b923a2a4f02012ad034a5e2e2192"), + common.HexToAddress("0x304a554a310c7e546dfe434669c62820b7d83490"), + common.HexToAddress("0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79"), + common.HexToAddress("0x4deb0033bb26bc534b197e61d19e0733e5679784"), + common.HexToAddress("0x07f5c1e1bc2c93e0402f23341973a0e043f7bf8a"), + common.HexToAddress("0x35a051a0010aba705c9008d7a7eff6fb88f6ea7b"), + common.HexToAddress("0x4fa802324e929786dbda3b8820dc7834e9134a2a"), + common.HexToAddress("0x9da397b9e80755301a3b32173283a91c0ef6c87e"), + common.HexToAddress("0x8d9edb3054ce5c5774a420ac37ebae0ac02343c6"), + common.HexToAddress("0x0101f3be8ebb4bbd39a2e3b9a3639d4259832fd9"), + common.HexToAddress("0x5dc28b15dffed94048d73806ce4b7a4612a1d48f"), + common.HexToAddress("0xbcf899e6c7d9d5a215ab1e3444c86806fa854c76"), + common.HexToAddress("0x12e626b0eebfe86a56d633b9864e389b45dcb260"), + common.HexToAddress("0xa2f1ccba9395d7fcb155bba8bc92db9bafaeade7"), + common.HexToAddress("0xec8e57756626fdc07c63ad2eafbd28d08e7b0ca5"), + common.HexToAddress("0xd164b088bd9108b60d0ca3751da4bceb207b0782"), + common.HexToAddress("0x6231b6d0d5e77fe001c2a460bd9584fee60d409b"), + common.HexToAddress("0x1cba23d343a983e9b5cfd19496b9a9701ada385f"), + common.HexToAddress("0xa82f360a8d3455c5c41366975bde739c37bfeb8a"), + common.HexToAddress("0x9fcd2deaff372a39cc679d5c5e4de7bafb0b1339"), + common.HexToAddress("0x005f5cee7a43331d5a3d3eec71305925a62f34b6"), + common.HexToAddress("0x0e0da70933f4c7849fc0d203f5d1d43b9ae4532d"), + common.HexToAddress("0xd131637d5275fd1a68a3200f4ad25c71a2a9522e"), + common.HexToAddress("0xbc07118b9ac290e4622f5e77a0853539789effbe"), + common.HexToAddress("0x47e7aa56d6bdf3f36be34619660de61275420af8"), + common.HexToAddress("0xacd87e28b0c9d1254e868b81cba4cc20d9a32225"), + common.HexToAddress("0xadf80daec7ba8dcf15392f1ac611fff65d94f880"), + common.HexToAddress("0x5524c55fb03cf21f549444ccbecb664d0acad706"), + common.HexToAddress("0x40b803a9abce16f50f36a77ba41180eb90023925"), + common.HexToAddress("0xfe24cdd8648121a43a7c86d289be4dd2951ed49f"), + common.HexToAddress("0x17802f43a0137c506ba92291391a8a8f207f487d"), + common.HexToAddress("0x253488078a4edf4d6f42f113d1e62836a942cf1a"), + common.HexToAddress("0x86af3e9626fce1957c82e88cbf04ddf3a2ed7915"), + common.HexToAddress("0xb136707642a4ea12fb4bae820f03d2562ebff487"), + common.HexToAddress("0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940"), + common.HexToAddress("0xf14c14075d6c4ed84b86798af0956deef67365b5"), + common.HexToAddress("0xca544e5c4687d109611d0f8f928b53a25af72448"), + common.HexToAddress("0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c"), + common.HexToAddress("0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7"), + common.HexToAddress("0x6d87578288b6cb5549d5076a207456a1f6a63dc0"), + common.HexToAddress("0xb2c6f0dfbb716ac562e2d85d6cb2f8d5ee87603e"), + common.HexToAddress("0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6"), + common.HexToAddress("0x2b3455ec7fedf16e646268bf88846bd7a2319bb2"), + common.HexToAddress("0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a"), + common.HexToAddress("0xd343b217de44030afaa275f54d31a9317c7f441e"), + common.HexToAddress("0x84ef4b2357079cd7a7c69fd7a37cd0609a679106"), + common.HexToAddress("0xda2fef9e4a3230988ff17df2165440f37e8b1708"), + common.HexToAddress("0xf4c64518ea10f995918a454158c6b61407ea345c"), + common.HexToAddress("0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97"), + common.HexToAddress("0xbb9bc244d798123fde783fcc1c72d3bb8c189413"), + common.HexToAddress("0x807640a13483f8ac783c557fcdf27be11ea4ac7a"), } } - -// daoDrainListJSON is the JSON encoded list of accounts whose full balances will -// be moved into a refund contract at the beginning of the dao-fork block. -const daoDrainListJSON = ` -[ - { - "address":"0xd4fe7bc31cedb7bfb8a345f31e668033056b2728", - "balance":"186cc8bfaefb7be", - "extraBalance":"0", - "extraBalanceAccount":"0xb3fb0e5aba0e20e5c49d252dfd30e102b171a425" - }, - { - "address":"0x2c19c7f9ae8b751e37aeb2d93a699722395ae18f", - "balance":"b14e8feab1ff435", - "extraBalance":"0", - "extraBalanceAccount":"0xecd135fa4f61a655311e86238c92adcd779555d2" - }, - { - "address":"0x1975bd06d486162d5dc297798dfc41edd5d160a7", - "balance":"359d26614cb5070c77", - "extraBalance":"0", - "extraBalanceAccount":"0xa3acf3a1e16b1d7c315e23510fdd7847b48234f6" - }, - { - "address":"0x319f70bab6845585f412ec7724b744fec6095c85", - "balance":"6e075cd846d2cb1d42", - "extraBalance":"13d34fd41b545b81", - "extraBalanceAccount":"0x06706dd3f2c9abf0a21ddcc6941d9b86f0596936" - }, - { - "address":"0x5c8536898fbb74fc7445814902fd08422eac56d0", - "balance":"b1e5593558008fd78", - "extraBalance":"0", - "extraBalanceAccount":"0x6966ab0d485353095148a2155858910e0965b6f9" - }, - { - "address":"0x779543a0491a837ca36ce8c635d6154e3c4911a6", - "balance":"392eaa20d1aad59a4c", - "extraBalance":"426938826a96c9", - "extraBalanceAccount":"0x2a5ed960395e2a49b1c758cef4aa15213cfd874c" - }, - { - "address":"0x5c6e67ccd5849c0d29219c4f95f1a7a93b3f5dc5", - "balance":"2875d22b29793d4ba7", - "extraBalance":"0", - "extraBalanceAccount":"0x9c50426be05db97f5d64fc54bf89eff947f0a321" - }, - { - "address":"0x200450f06520bdd6c527622a273333384d870efb", - "balance":"43c341d9f96954c049", - "extraBalance":"0", - "extraBalanceAccount":"0xbe8539bfe837b67d1282b2b1d61c3f723966f049" - }, - { - "address":"0x6b0c4d41ba9ab8d8cfb5d379c69a612f2ced8ecb", - "balance":"75251057154d70fa816", - "extraBalance":"0", - "extraBalanceAccount":"0xf1385fb24aad0cd7432824085e42aff90886fef5" - }, - { - "address":"0xd1ac8b1ef1b69ff51d1d401a476e7e612414f091", - "balance":"392409769296cf67f36", - "extraBalance":"0", - "extraBalanceAccount":"0x8163e7fb499e90f8544ea62bbf80d21cd26d9efd" - }, - { - "address":"0x51e0ddd9998364a2eb38588679f0d2c42653e4a6", - "balance":"8ac72eccbf4e8083", - "extraBalance":"0", - "extraBalanceAccount":"0x627a0a960c079c21c34f7612d5d230e01b4ad4c7" - }, - { - "address":"0xf0b1aa0eb660754448a7937c022e30aa692fe0c5", - "balance":"82289c3bb3e8c98799", - "extraBalance":"0", - "extraBalanceAccount":"0x24c4d950dfd4dd1902bbed3508144a54542bba94" - }, - { - "address":"0x9f27daea7aca0aa0446220b98d028715e3bc803d", - "balance":"56bc29049ebed40fd", - "extraBalance":"0", - "extraBalanceAccount":"0xa5dc5acd6a7968a4554d89d65e59b7fd3bff0f90" - }, - { - "address":"0xd9aef3a1e38a39c16b31d1ace71bca8ef58d315b", - "balance":"56bc7d3ff79110524", - "extraBalance":"0", - "extraBalanceAccount":"0x63ed5a272de2f6d968408b4acb9024f4cc208ebf" - }, - { - "address":"0x6f6704e5a10332af6672e50b3d9754dc460dfa4d", - "balance":"23b651bd48cbc70cc", - "extraBalance":"0", - "extraBalanceAccount":"0x77ca7b50b6cd7e2f3fa008e24ab793fd56cb15f6" - }, - { - "address":"0x492ea3bb0f3315521c31f273e565b868fc090f17", - "balance":"13ea6d4fee651dd7c9", - "extraBalance":"0", - "extraBalanceAccount":"0x0ff30d6de14a8224aa97b78aea5388d1c51c1f00" - }, - { - "address":"0x9ea779f907f0b315b364b0cfc39a0fde5b02a416", - "balance":"35ac471a3836ae7de5a", - "extraBalance":"0", - "extraBalanceAccount":"0xceaeb481747ca6c540a000c1f3641f8cef161fa7" - }, - { - "address":"0xcc34673c6c40e791051898567a1222daf90be287", - "balance":"d529c0b76b7aa0", - "extraBalance":"0", - "extraBalanceAccount":"0x579a80d909f346fbfb1189493f521d7f48d52238" - }, - { - "address":"0xe308bd1ac5fda103967359b2712dd89deffb7973", - "balance":"5cd9e7df3a8e5cdd3", - "extraBalance":"0", - "extraBalanceAccount":"0x4cb31628079fb14e4bc3cd5e30c2f7489b00960c" - }, - { - "address":"0xac1ecab32727358dba8962a0f3b261731aad9723", - "balance":"2c8442fe35363313b93", - "extraBalance":"0", - "extraBalanceAccount":"0x4fd6ace747f06ece9c49699c7cabc62d02211f75" - }, - { - "address":"0x440c59b325d2997a134c2c7c60a8c61611212bad", - "balance":"e77583a3958130e53", - "extraBalance":"0", - "extraBalanceAccount":"0x4486a3d68fac6967006d7a517b889fd3f98c102b" - }, - { - "address":"0x9c15b54878ba618f494b38f0ae7443db6af648ba", - "balance":"1f0b6ade348ca998", - "extraBalance":"0", - "extraBalanceAccount":"0x27b137a85656544b1ccb5a0f2e561a5703c6a68f" - }, - { - "address":"0x21c7fdb9ed8d291d79ffd82eb2c4356ec0d81241", - "balance":"61725880736659", - "extraBalance":"0", - "extraBalanceAccount":"0x23b75c2f6791eef49c69684db4c6c1f93bf49a50" - }, - { - "address":"0x1ca6abd14d30affe533b24d7a21bff4c2d5e1f3b", - "balance":"42948d8dc7ddbc22d", - "extraBalance":"0", - "extraBalanceAccount":"0xb9637156d330c0d605a791f1c31ba5890582fe1c" - }, - { - "address":"0x6131c42fa982e56929107413a9d526fd99405560", - "balance":"7306683851d1eafbfa", - "extraBalance":"0", - "extraBalanceAccount":"0x1591fc0f688c81fbeb17f5426a162a7024d430c2" - }, - { - "address":"0x542a9515200d14b68e934e9830d91645a980dd7a", - "balance":"2a8457d0d8432e21d0c", - "extraBalance":"0", - "extraBalanceAccount":"0xc4bbd073882dd2add2424cf47d35213405b01324" - }, - { - "address":"0x782495b7b3355efb2833d56ecb34dc22ad7dfcc4", - "balance":"d8d7391feaeaa8cdb", - "extraBalance":"0", - "extraBalanceAccount":"0x58b95c9a9d5d26825e70a82b6adb139d3fd829eb" - }, - { - "address":"0x3ba4d81db016dc2890c81f3acec2454bff5aada5", - "balance":"1", - "extraBalance":"0", - "extraBalanceAccount":"0xb52042c8ca3f8aa246fa79c3feaa3d959347c0ab" - }, - { - "address":"0xe4ae1efdfc53b73893af49113d8694a057b9c0d1", - "balance":"456397665fa74041", - "extraBalance":"0", - "extraBalanceAccount":"0x3c02a7bc0391e86d91b7d144e61c2c01a25a79c5" - }, - { - "address":"0x0737a6b837f97f46ebade41b9bc3e1c509c85c53", - "balance":"6324dcb7126ecbef", - "extraBalance":"0", - "extraBalanceAccount":"0x97f43a37f595ab5dd318fb46e7a155eae057317a" - }, - { - "address":"0x52c5317c848ba20c7504cb2c8052abd1fde29d03", - "balance":"6c3419b0705c01cd0d", - "extraBalance":"0", - "extraBalanceAccount":"0x4863226780fe7c0356454236d3b1c8792785748d" - }, - { - "address":"0x5d2b2e6fcbe3b11d26b525e085ff818dae332479", - "balance":"456397665fa74041", - "extraBalance":"0", - "extraBalanceAccount":"0x5f9f3392e9f62f63b8eac0beb55541fc8627f42c" - }, - { - "address":"0x057b56736d32b86616a10f619859c6cd6f59092a", - "balance":"232c025bb44b46", - "extraBalance":"0", - "extraBalanceAccount":"0x9aa008f65de0b923a2a4f02012ad034a5e2e2192" - }, - { - "address":"0x304a554a310c7e546dfe434669c62820b7d83490", - "balance":"3034f5ca7d45e17df199b", - "extraBalance":"f7d15162c44e97b6e", - "extraBalanceAccount":"0x914d1b8b43e92723e64fd0a06f5bdb8dd9b10c79" - }, - { - "address":"0x4deb0033bb26bc534b197e61d19e0733e5679784", - "balance":"4417e96ed796591e09", - "extraBalance":"0", - "extraBalanceAccount":"0x07f5c1e1bc2c93e0402f23341973a0e043f7bf8a" - }, - { - "address":"0x35a051a0010aba705c9008d7a7eff6fb88f6ea7b", - "balance":"d3ff7771412bbcc9", - "extraBalance":"0", - "extraBalanceAccount":"0x4fa802324e929786dbda3b8820dc7834e9134a2a" - }, - { - "address":"0x9da397b9e80755301a3b32173283a91c0ef6c87e", - "balance":"32ae324c233816b4c2", - "extraBalance":"0", - "extraBalanceAccount":"0x8d9edb3054ce5c5774a420ac37ebae0ac02343c6" - }, - { - "address":"0x0101f3be8ebb4bbd39a2e3b9a3639d4259832fd9", - "balance":"1e530695b705f037c6", - "extraBalance":"0", - "extraBalanceAccount":"0x5dc28b15dffed94048d73806ce4b7a4612a1d48f" - }, - { - "address":"0xbcf899e6c7d9d5a215ab1e3444c86806fa854c76", - "balance":"68013bad5b4b1133fc5", - "extraBalance":"0", - "extraBalanceAccount":"0x12e626b0eebfe86a56d633b9864e389b45dcb260" - }, - { - "address":"0xa2f1ccba9395d7fcb155bba8bc92db9bafaeade7", - "balance":"456397665fa74041", - "extraBalance":"0", - "extraBalanceAccount":"0xec8e57756626fdc07c63ad2eafbd28d08e7b0ca5" - }, - { - "address":"0xd164b088bd9108b60d0ca3751da4bceb207b0782", - "balance":"3635ce47fabaaa336e", - "extraBalance":"0", - "extraBalanceAccount":"0x6231b6d0d5e77fe001c2a460bd9584fee60d409b" - }, - { - "address":"0x1cba23d343a983e9b5cfd19496b9a9701ada385f", - "balance":"f3abd9906c170a", - "extraBalance":"0", - "extraBalanceAccount":"0xa82f360a8d3455c5c41366975bde739c37bfeb8a" - }, - { - "address":"0x9fcd2deaff372a39cc679d5c5e4de7bafb0b1339", - "balance":"4c6679d9d9b95a4e08", - "extraBalance":"0", - "extraBalanceAccount":"0x005f5cee7a43331d5a3d3eec71305925a62f34b6" - }, - { - "address":"0x0e0da70933f4c7849fc0d203f5d1d43b9ae4532d", - "balance":"40f622936475de31849", - "extraBalance":"671e1bbabded39754", - "extraBalanceAccount":"0xd131637d5275fd1a68a3200f4ad25c71a2a9522e" - }, - { - "address":"0xbc07118b9ac290e4622f5e77a0853539789effbe", - "balance":"1316ccfa4a35db5e58f", - "extraBalance":"0", - "extraBalanceAccount":"0x47e7aa56d6bdf3f36be34619660de61275420af8" - }, - { - "address":"0xacd87e28b0c9d1254e868b81cba4cc20d9a32225", - "balance":"b3ad6bb72000bab9f", - "extraBalance":"0", - "extraBalanceAccount":"0xadf80daec7ba8dcf15392f1ac611fff65d94f880" - }, - { - "address":"0x5524c55fb03cf21f549444ccbecb664d0acad706", - "balance":"16f2da372a5c8a70967", - "extraBalance":"0", - "extraBalanceAccount":"0x40b803a9abce16f50f36a77ba41180eb90023925" - }, - { - "address":"0xfe24cdd8648121a43a7c86d289be4dd2951ed49f", - "balance":"ea0b1bdc78f500a43", - "extraBalance":"0", - "extraBalanceAccount":"0x17802f43a0137c506ba92291391a8a8f207f487d" - }, - { - "address":"0x253488078a4edf4d6f42f113d1e62836a942cf1a", - "balance":"3060e3aed135cc80", - "extraBalance":"0", - "extraBalanceAccount":"0x86af3e9626fce1957c82e88cbf04ddf3a2ed7915" - }, - { - "address":"0xb136707642a4ea12fb4bae820f03d2562ebff487", - "balance":"6050bdeb3354b5c98adc3", - "extraBalance":"0", - "extraBalanceAccount":"0xdbe9b615a3ae8709af8b93336ce9b477e4ac0940" - }, - { - "address":"0xf14c14075d6c4ed84b86798af0956deef67365b5", - "balance":"1d77844e94c25ba2", - "extraBalance":"0", - "extraBalanceAccount":"0xca544e5c4687d109611d0f8f928b53a25af72448" - }, - { - "address":"0xaeeb8ff27288bdabc0fa5ebb731b6f409507516c", - "balance":"2e93a72de4fc5ec0ed", - "extraBalance":"0", - "extraBalanceAccount":"0xcbb9d3703e651b0d496cdefb8b92c25aeb2171f7" - }, - { - "address":"0x6d87578288b6cb5549d5076a207456a1f6a63dc0", - "balance":"1afd340799e48c18", - "extraBalance":"0", - "extraBalanceAccount":"0xb2c6f0dfbb716ac562e2d85d6cb2f8d5ee87603e" - }, - { - "address":"0xaccc230e8a6e5be9160b8cdf2864dd2a001c28b6", - "balance":"14d0944eb3be947a8", - "extraBalance":"0", - "extraBalanceAccount":"0x2b3455ec7fedf16e646268bf88846bd7a2319bb2" - }, - { - "address":"0x4613f3bca5c44ea06337a9e439fbc6d42e501d0a", - "balance":"6202b236a200e365eba", - "extraBalance":"11979be9020f03ec4ec", - "extraBalanceAccount":"0xd343b217de44030afaa275f54d31a9317c7f441e" - }, - { - "address":"0x84ef4b2357079cd7a7c69fd7a37cd0609a679106", - "balance":"7ed634ebbba531901e07", - "extraBalance":"f9c5eff28cb08720c85", - "extraBalanceAccount":"0xda2fef9e4a3230988ff17df2165440f37e8b1708" - }, - { - "address":"0xf4c64518ea10f995918a454158c6b61407ea345c", - "balance":"39152e15508a96ff894a", - "extraBalance":"14041ca908bcc185c8", - "extraBalanceAccount":"0x7602b46df5390e432ef1c307d4f2c9ff6d65cc97" - }, - { - "address":"0xbb9bc244d798123fde783fcc1c72d3bb8c189413", - "balance":"1", - "extraBalance":"5553ebc", - "extraBalanceAccount":"0x807640a13483f8ac783c557fcdf27be11ea4ac7a" - } -] -` From 8ff7e55ab547e6c915a74971126f64b7582f2b77 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Thu, 23 Mar 2017 17:04:39 +0200 Subject: [PATCH 41/57] accounts/usbwallet: if a confirmation is pending, skip refresh --- accounts/usbwallet/ledger_hub.go | 9 ++++++++- accounts/usbwallet/ledger_wallet.go | 10 ++++++++-- 2 files changed, 16 insertions(+), 3 deletions(-) diff --git a/accounts/usbwallet/ledger_hub.go b/accounts/usbwallet/ledger_hub.go index ed992a82dd..fcbc24c0f5 100644 --- a/accounts/usbwallet/ledger_hub.go +++ b/accounts/usbwallet/ledger_hub.go @@ -58,7 +58,10 @@ type LedgerHub struct { quit chan chan error stateLock sync.RWMutex // Protects the internals of the hub from racey access - commsLock sync.RWMutex // Allows wallets to lock enumeration (TODO(karalabe): remove if hotplug lands on Windows) + + // TODO(karalabe): remove if hotplug lands on Windows + commsPend int // Number of operations blocking enumeration + commsLock sync.Mutex // Lock protecting the pending counter and enumeration } // NewLedgerHub creates a new hardware wallet manager for Ledger devices. @@ -109,6 +112,10 @@ func (hub *LedgerHub) refreshWallets() { // be to ditch enumeration in favor of hutplug events, but that don't work yet // on Windows so if we need to hack it anyway, this is more elegant for now. hub.commsLock.Lock() + if hub.commsPend > 0 { // A confirmation is pending, don't refresh + hub.commsLock.Unlock() + return + } } for _, info := range hid.Enumerate(0, 0) { // Can't enumerate directly, one valid ID is the 0 wildcard for _, id := range ledgerDeviceIDs { diff --git a/accounts/usbwallet/ledger_wallet.go b/accounts/usbwallet/ledger_wallet.go index 97434ed3bd..f1beebb2c9 100644 --- a/accounts/usbwallet/ledger_wallet.go +++ b/accounts/usbwallet/ledger_wallet.go @@ -579,9 +579,15 @@ func (w *ledgerWallet) SignTx(account accounts.Account, tx *types.Transaction, c // Ensure the device isn't screwed with while user confirmation is pending // TODO(karalabe): remove if hotplug lands on Windows - w.hub.commsLock.RLock() - defer w.hub.commsLock.RUnlock() + w.hub.commsLock.Lock() + w.hub.commsPend++ + w.hub.commsLock.Unlock() + defer func() { + w.hub.commsLock.Lock() + w.hub.commsPend-- + w.hub.commsLock.Unlock() + }() return w.ledgerSign(path, account.Address, tx, chainID) } From df1fbe3c067bbca9be10f6fc2d09a66f82313a82 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 23 Mar 2017 15:48:30 +0100 Subject: [PATCH 42/57] build: always run go vet This ensures 'make test' finds all errors that remote CI would find. Go 1.7 vet reports a false positive in package log, add a workaround. --- .travis.yml | 4 ++-- appveyor.yml | 2 +- build/ci.go | 7 ++----- log/handler.go | 7 ++++++- 4 files changed, 11 insertions(+), 9 deletions(-) diff --git a/.travis.yml b/.travis.yml index 4bef48a0db..9d85635b1a 100644 --- a/.travis.yml +++ b/.travis.yml @@ -24,7 +24,7 @@ matrix: - sudo chmod 666 /dev/fuse - sudo chown root:$USER /etc/fuse.conf - go run build/ci.go install - - go run build/ci.go test -coverage -vet -misspell + - go run build/ci.go test -coverage -misspell - os: osx go: 1.8 @@ -34,7 +34,7 @@ matrix: - brew install caskroom/cask/brew-cask - brew cask install osxfuse - go run build/ci.go install - - go run build/ci.go test -coverage -vet -misspell + - go run build/ci.go test -coverage -misspell # This builder does the Ubuntu PPA and Linux Azure uploads - os: linux diff --git a/appveyor.yml b/appveyor.yml index c156967052..c9c2e357e8 100644 --- a/appveyor.yml +++ b/appveyor.yml @@ -36,4 +36,4 @@ after_build: test_script: - set CGO_ENABLED=1 - - go run build\ci.go test -vet -coverage + - go run build\ci.go test -coverage diff --git a/build/ci.go b/build/ci.go index fcdd337888..6224175804 100644 --- a/build/ci.go +++ b/build/ci.go @@ -24,7 +24,7 @@ Usage: go run ci.go Available commands are: install [ -arch architecture ] [ packages... ] -- builds packages and executables - test [ -coverage ] [ -vet ] [ -misspell ] [ packages... ] -- runs the tests + test [ -coverage ] [ -misspell ] [ packages... ] -- runs the tests archive [ -arch architecture ] [ -type zip|tar ] [ -signer key-envvar ] [ -upload dest ] -- archives build artefacts importkeys -- imports signing keys from env debsrc [ -signer key-id ] [ -upload dest ] -- creates a debian source package @@ -262,7 +262,6 @@ func goToolArch(arch string, subcmd string, args ...string) *exec.Cmd { func doTest(cmdline []string) { var ( - vet = flag.Bool("vet", false, "Whether to run go vet") misspell = flag.Bool("misspell", false, "Whether to run the spell checker") coverage = flag.Bool("coverage", false, "Whether to record code coverage") ) @@ -275,9 +274,7 @@ func doTest(cmdline []string) { packages = build.ExpandPackagesNoVendor(packages) // Run analysis tools before the tests. - if *vet { - build.MustRun(goTool("vet", packages...)) - } + build.MustRun(goTool("vet", packages...)) if *misspell { spellcheck(packages) } diff --git a/log/handler.go b/log/handler.go index abb17b4c41..d5594b853d 100644 --- a/log/handler.go +++ b/log/handler.go @@ -106,11 +106,16 @@ func CallerFileHandler(h Handler) Handler { // the context with key "fn". func CallerFuncHandler(h Handler) Handler { return FuncHandler(func(r *Record) error { - r.Ctx = append(r.Ctx, "fn", fmt.Sprintf("%+n", r.Call)) + r.Ctx = append(r.Ctx, "fn", formatCall("%+n", r.Call)) return h.Log(r) }) } +// This function is here to please go vet on Go < 1.8. +func formatCall(format string, c stack.Call) string { + return fmt.Sprintf(format, c) +} + // CallerStackHandler returns a Handler that adds a stack trace to the context // with key "stack". The stack trace is formated as a space separated list of // call sites inside matching []'s. The most recent call site is listed first. From 69ac6cc70e4f2e712be91be2795ef79bce3f0e89 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Thu, 23 Mar 2017 16:01:17 +0100 Subject: [PATCH 43/57] travis.yml: re-add missing build commands for Go 1.7 --- .travis.yml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/.travis.yml b/.travis.yml index 9d85635b1a..d3b0d427c7 100644 --- a/.travis.yml +++ b/.travis.yml @@ -12,8 +12,10 @@ matrix: - sudo modprobe fuse - sudo chmod 666 /dev/fuse - sudo chown root:$USER /etc/fuse.conf + - go run build/ci.go install + - go run build/ci.go test -coverage - # These are the latest Go versions, only run go vet and misspell on these + # These are the latest Go versions. - os: linux dist: trusty sudo: required From bb7dca275c44fe9d176e629b3440adf92d26a150 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 24 Mar 2017 11:42:40 +0200 Subject: [PATCH 44/57] ethstats: cleanups, trace logs and "fix" history responses (#3812) --- ethstats/ethstats.go | 154 ++++++++++++++++++++++++------------------- 1 file changed, 85 insertions(+), 69 deletions(-) diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index 4d38d3a500..9d494b615d 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -152,39 +152,31 @@ func (s *Service) loop() { continue } // Authenticate the client with the server - in := json.NewDecoder(conn) - out := json.NewEncoder(conn) - - if err = s.login(in, out); err != nil { + if err = s.login(conn); err != nil { log.Warn("Stats login failed", "err", err) conn.Close() time.Sleep(10 * time.Second) continue } - go s.readLoop(conn, in) + go s.readLoop(conn) // Send the initial stats so our node looks decent from the get go - if err = s.report(out); err != nil { + if err = s.report(conn); err != nil { log.Warn("Initial stats report failed", "err", err) conn.Close() continue } - if err = s.reportHistory(out, nil); err != nil { - log.Warn("Initial history report failed", "err", err) - conn.Close() - continue - } // Keep sending status updates until the connection breaks fullReport := time.NewTicker(15 * time.Second) for err == nil { select { case <-fullReport.C: - if err = s.report(out); err != nil { + if err = s.report(conn); err != nil { log.Warn("Full stats report failed", "err", err) } case list := <-s.histCh: - if err = s.reportHistory(out, list); err != nil { + if err = s.reportHistory(conn, list); err != nil { log.Warn("Requested history report failed", "err", err) } case head, ok := <-headSub.Chan(): @@ -192,10 +184,10 @@ func (s *Service) loop() { conn.Close() return } - if err = s.reportBlock(out, head.Data.(core.ChainHeadEvent).Block); err != nil { + if err = s.reportBlock(conn, head.Data.(core.ChainHeadEvent).Block); err != nil { log.Warn("Block stats report failed", "err", err) } - if err = s.reportPending(out); err != nil { + if err = s.reportPending(conn); err != nil { log.Warn("Post-block transaction stats report failed", "err", err) } case _, ok := <-txSub.Chan(): @@ -211,7 +203,7 @@ func (s *Service) loop() { exhausted = true } } - if err = s.reportPending(out); err != nil { + if err = s.reportPending(conn); err != nil { log.Warn("Transaction stats report failed", "err", err) } } @@ -225,17 +217,18 @@ func (s *Service) loop() { // from the network socket. If any of them match an active request, it forwards // it, if they themselves are requests it initiates a reply, and lastly it drops // unknown packets. -func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { +func (s *Service) readLoop(conn *websocket.Conn) { // If the read loop exists, close the connection defer conn.Close() for { // Retrieve the next generic network packet and bail out on error var msg map[string][]interface{} - if err := in.Decode(&msg); err != nil { + if err := websocket.JSON.Receive(conn, &msg); err != nil { log.Warn("Failed to decode stats server message", "err", err) return } + log.Trace("Received message from stats server", "msg", msg) if len(msg["emit"]) == 0 { log.Warn("Stats server sent non-broadcast", "msg", msg) return @@ -263,6 +256,7 @@ func (s *Service) readLoop(conn *websocket.Conn, in *json.Decoder) { request, ok := msg["emit"][1].(map[string]interface{}) if !ok { log.Warn("Invalid stats history request", "msg", msg["emit"][1]) + s.histCh <- nil continue // Ethstats sometime sends invalid history requests, ignore those } list, ok := request["list"].([]interface{}) @@ -314,7 +308,7 @@ type authMsg struct { } // login tries to authorize the client at the remote server. -func (s *Service) login(in *json.Decoder, out *json.Encoder) error { +func (s *Service) login(conn *websocket.Conn) error { // Construct and send the login authentication infos := s.server.NodeInfo() @@ -345,12 +339,12 @@ func (s *Service) login(in *json.Decoder, out *json.Encoder) error { login := map[string][]interface{}{ "emit": {"hello", auth}, } - if err := out.Encode(login); err != nil { + if err := websocket.JSON.Send(conn, login); err != nil { return err } // Retrieve the remote ack or connection termination var ack map[string][]string - if err := in.Decode(&ack); err != nil || len(ack["emit"]) != 1 || ack["emit"][0] != "ready" { + if err := websocket.JSON.Receive(conn, &ack); err != nil || len(ack["emit"]) != 1 || ack["emit"][0] != "ready" { return errors.New("unauthorized") } return nil @@ -359,17 +353,17 @@ func (s *Service) login(in *json.Decoder, out *json.Encoder) error { // report collects all possible data to report and send it to the stats server. // This should only be used on reconnects or rarely to avoid overloading the // server. Use the individual methods for reporting subscribed events. -func (s *Service) report(out *json.Encoder) error { - if err := s.reportLatency(out); err != nil { +func (s *Service) report(conn *websocket.Conn) error { + if err := s.reportLatency(conn); err != nil { return err } - if err := s.reportBlock(out, nil); err != nil { + if err := s.reportBlock(conn, nil); err != nil { return err } - if err := s.reportPending(out); err != nil { + if err := s.reportPending(conn); err != nil { return err } - if err := s.reportStats(out); err != nil { + if err := s.reportStats(conn); err != nil { return err } return nil @@ -377,7 +371,7 @@ func (s *Service) report(out *json.Encoder) error { // reportLatency sends a ping request to the server, measures the RTT time and // finally sends a latency update. -func (s *Service) reportLatency(out *json.Encoder) error { +func (s *Service) reportLatency(conn *websocket.Conn) error { // Send the current time to the ethstats server start := time.Now() @@ -387,7 +381,7 @@ func (s *Service) reportLatency(out *json.Encoder) error { "clientTime": start.String(), }}, } - if err := out.Encode(ping); err != nil { + if err := websocket.JSON.Send(conn, ping); err != nil { return err } // Wait for the pong request to arrive back @@ -398,28 +392,35 @@ func (s *Service) reportLatency(out *json.Encoder) error { // Ping timeout, abort return errors.New("ping timed out") } + latency := strconv.Itoa(int((time.Since(start) / time.Duration(2)).Nanoseconds() / 1000000)) + // Send back the measured latency - latency := map[string][]interface{}{ + log.Trace("Sending measured latency to ethstats", "latency", latency) + + stats := map[string][]interface{}{ "emit": {"latency", map[string]string{ "id": s.node, - "latency": strconv.Itoa(int((time.Since(start) / time.Duration(2)).Nanoseconds() / 1000000)), + "latency": latency, }}, } - return out.Encode(latency) + return websocket.JSON.Send(conn, stats) } // blockStats is the information to report about individual blocks. type blockStats struct { - Number *big.Int `json:"number"` - Hash common.Hash `json:"hash"` - Timestamp *big.Int `json:"timestamp"` - Miner common.Address `json:"miner"` - GasUsed *big.Int `json:"gasUsed"` - GasLimit *big.Int `json:"gasLimit"` - Diff string `json:"difficulty"` - TotalDiff string `json:"totalDifficulty"` - Txs txStats `json:"transactions"` - Uncles uncleStats `json:"uncles"` + Number *big.Int `json:"number"` + Hash common.Hash `json:"hash"` + ParentHash common.Hash `json:"parentHash"` + Timestamp *big.Int `json:"timestamp"` + Miner common.Address `json:"miner"` + GasUsed *big.Int `json:"gasUsed"` + GasLimit *big.Int `json:"gasLimit"` + Diff string `json:"difficulty"` + TotalDiff string `json:"totalDifficulty"` + Txs txStats `json:"transactions"` + TxHash common.Hash `json:"transactionsRoot"` + Root common.Hash `json:"stateRoot"` + Uncles uncleStats `json:"uncles"` } // txStats is a custom wrapper around a transaction array to force serializing @@ -445,16 +446,21 @@ func (s uncleStats) MarshalJSON() ([]byte, error) { } // reportBlock retrieves the current chain head and repors it to the stats server. -func (s *Service) reportBlock(out *json.Encoder, block *types.Block) error { - // Assemble the block stats report and send it to the server +func (s *Service) reportBlock(conn *websocket.Conn, block *types.Block) error { + // Gather the block details from the header or block chain + details := s.assembleBlockStats(block) + + // Assemble the block report and send it to the server + log.Trace("Sending new block to ethstats", "number", details.Number, "hash", details.Hash) + stats := map[string]interface{}{ "id": s.node, - "block": s.assembleBlockStats(block), + "block": details, } report := map[string][]interface{}{ "emit": {"block", stats}, } - return out.Encode(report) + return websocket.JSON.Send(conn, report) } // assembleBlockStats retrieves any required metadata to report a single block @@ -488,22 +494,25 @@ func (s *Service) assembleBlockStats(block *types.Block) *blockStats { } // Assemble and return the block stats return &blockStats{ - Number: header.Number, - Hash: header.Hash(), - Timestamp: header.Time, - Miner: header.Coinbase, - GasUsed: new(big.Int).Set(header.GasUsed), - GasLimit: new(big.Int).Set(header.GasLimit), - Diff: header.Difficulty.String(), - TotalDiff: td.String(), - Txs: txs, - Uncles: uncles, + Number: header.Number, + Hash: header.Hash(), + ParentHash: header.ParentHash, + Timestamp: header.Time, + Miner: header.Coinbase, + GasUsed: new(big.Int).Set(header.GasUsed), + GasLimit: new(big.Int).Set(header.GasLimit), + Diff: header.Difficulty.String(), + TotalDiff: td.String(), + Txs: txs, + TxHash: header.TxHash, + Root: header.Root, + Uncles: uncles, } } // reportHistory retrieves the most recent batch of blocks and reports it to the // stats server. -func (s *Service) reportHistory(out *json.Encoder, list []uint64) error { +func (s *Service) reportHistory(conn *websocket.Conn, list []uint64) error { // Figure out the indexes that need reporting indexes := make([]uint64, 0, historyUpdateRange) if len(list) > 0 { @@ -511,17 +520,17 @@ func (s *Service) reportHistory(out *json.Encoder, list []uint64) error { indexes = append(indexes, list...) } else { // No indexes requested, send back the top ones - var head *types.Header + var head int64 if s.eth != nil { - head = s.eth.BlockChain().CurrentHeader() + head = s.eth.BlockChain().CurrentHeader().Number.Int64() } else { - head = s.les.BlockChain().CurrentHeader() + head = s.les.BlockChain().CurrentHeader().Number.Int64() } - start := head.Number.Int64() - historyUpdateRange + start := head - historyUpdateRange + 1 if start < 0 { start = 0 } - for i := uint64(start); i <= head.Number.Uint64(); i++ { + for i := uint64(start); i <= uint64(head); i++ { indexes = append(indexes, i) } } @@ -529,12 +538,14 @@ func (s *Service) reportHistory(out *json.Encoder, list []uint64) error { history := make([]*blockStats, len(indexes)) for i, number := range indexes { if s.eth != nil { - history[i] = s.assembleBlockStats(s.eth.BlockChain().GetBlockByNumber(number)) + history[len(history)-1-i] = s.assembleBlockStats(s.eth.BlockChain().GetBlockByNumber(number)) } else { - history[i] = s.assembleBlockStats(types.NewBlockWithHeader(s.les.BlockChain().GetHeaderByNumber(number))) + history[len(history)-1-i] = s.assembleBlockStats(types.NewBlockWithHeader(s.les.BlockChain().GetHeaderByNumber(number))) } } // Assemble the history report and send it to the server + log.Trace("Sending historical blocks to ethstats", "first", history[0].Number, "last", history[len(history)-1].Number) + stats := map[string]interface{}{ "id": s.node, "history": history, @@ -542,7 +553,7 @@ func (s *Service) reportHistory(out *json.Encoder, list []uint64) error { report := map[string][]interface{}{ "emit": {"history", stats}, } - return out.Encode(report) + return websocket.JSON.Send(conn, report) } // pendStats is the information to report about pending transactions. @@ -552,7 +563,7 @@ type pendStats struct { // reportPending retrieves the current number of pending transactions and reports // it to the stats server. -func (s *Service) reportPending(out *json.Encoder) error { +func (s *Service) reportPending(conn *websocket.Conn) error { // Retrieve the pending count from the local blockchain var pending int if s.eth != nil { @@ -561,6 +572,8 @@ func (s *Service) reportPending(out *json.Encoder) error { pending = s.les.TxPool().Stats() } // Assemble the transaction stats and send it to the server + log.Trace("Sending pending transactions to ethstats", "count", pending) + stats := map[string]interface{}{ "id": s.node, "stats": &pendStats{ @@ -570,10 +583,10 @@ func (s *Service) reportPending(out *json.Encoder) error { report := map[string][]interface{}{ "emit": {"pending", stats}, } - return out.Encode(report) + return websocket.JSON.Send(conn, report) } -// blockStats is the information to report about the local node. +// nodeStats is the information to report about the local node. type nodeStats struct { Active bool `json:"active"` Syncing bool `json:"syncing"` @@ -586,7 +599,7 @@ type nodeStats struct { // reportPending retrieves various stats about the node at the networking and // mining layer and reports it to the stats server. -func (s *Service) reportStats(out *json.Encoder) error { +func (s *Service) reportStats(conn *websocket.Conn) error { // Gather the syncing and mining infos from the local miner instance var ( mining bool @@ -606,6 +619,9 @@ func (s *Service) reportStats(out *json.Encoder) error { sync := s.les.Downloader().Progress() syncing = s.les.BlockChain().CurrentHeader().Number.Uint64() >= sync.HighestBlock } + // Assemble the node stats and send it to the server + log.Trace("Sending node details to ethstats") + stats := map[string]interface{}{ "id": s.node, "stats": &nodeStats{ @@ -621,5 +637,5 @@ func (s *Service) reportStats(out *json.Encoder) error { report := map[string][]interface{}{ "emit": {"stats", stats}, } - return out.Encode(report) + return websocket.JSON.Send(conn, report) } From 1018bf6a00be475cb9af2812c1f61fa8530068a3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 24 Mar 2017 13:07:12 +0200 Subject: [PATCH 45/57] rpc: honour pending requests before tearing conn down (#3814) --- rpc/server.go | 42 ++++++++++++++++++++++++++++-------------- 1 file changed, 28 insertions(+), 14 deletions(-) diff --git a/rpc/server.go b/rpc/server.go index ca7e3c01a0..8627b55928 100644 --- a/rpc/server.go +++ b/rpc/server.go @@ -21,6 +21,7 @@ import ( "fmt" "reflect" "runtime" + "sync" "sync/atomic" "github.com/ethereum/go-ethereum/log" @@ -143,6 +144,8 @@ func hasOption(option CodecOption, options []CodecOption) bool { // requests until the codec returns an error when reading a request (in most cases // an EOF). It executes requests in parallel when singleShot is false. func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecOption) error { + var pend sync.WaitGroup + defer func() { if err := recover(); err != nil { const size = 64 << 10 @@ -150,7 +153,6 @@ func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecO buf = buf[:runtime.Stack(buf, false)] log.Error(fmt.Sprint(string(buf))) } - s.codecsMu.Lock() s.codecs.Remove(codec) s.codecsMu.Unlock() @@ -179,8 +181,13 @@ func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecO for atomic.LoadInt32(&s.run) == 1 { reqs, batch, err := s.readRequest(codec) if err != nil { - log.Debug(fmt.Sprintf("read error %v\n", err)) - codec.Write(codec.CreateErrorResponse(nil, err)) + // If a parsing error occurred, send an error + if err.Error() != "EOF" { + log.Debug(fmt.Sprintf("read error %v\n", err)) + codec.Write(codec.CreateErrorResponse(nil, err)) + } + // Error or end of stream, wait for requests and tear down + pend.Wait() return nil } @@ -199,20 +206,27 @@ func (s *Server) serveRequest(codec ServerCodec, singleShot bool, options CodecO } return nil } - - if singleShot && batch { - s.execBatch(ctx, codec, reqs) + // If a single shot request is executing, run and return immediately + if singleShot { + if batch { + s.execBatch(ctx, codec, reqs) + } else { + s.exec(ctx, codec, reqs[0]) + } return nil - } else if singleShot && !batch { - s.exec(ctx, codec, reqs[0]) - return nil - } else if !singleShot && batch { - go s.execBatch(ctx, codec, reqs) - } else { - go s.exec(ctx, codec, reqs[0]) } - } + // For multi-shot connections, start a goroutine to serve and loop back + pend.Add(1) + go func(reqs []*serverRequest, batch bool) { + defer pend.Done() + if batch { + s.execBatch(ctx, codec, reqs) + } else { + s.exec(ctx, codec, reqs[0]) + } + }(reqs, batch) + } return nil } From 4be37e91b941db0cec1cab9c41b7e62a08f78d81 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Fri, 24 Mar 2017 22:02:08 +0100 Subject: [PATCH 46/57] core/types: ensure all EIP155 signer fields are set by deriveSigner Fixes #3819 --- core/types/transaction.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/core/types/transaction.go b/core/types/transaction.go index 86948b5b74..ee2f25b52c 100644 --- a/core/types/transaction.go +++ b/core/types/transaction.go @@ -40,7 +40,7 @@ var ( // deriveSigner makes a *best* guess about which signer to use. func deriveSigner(V *big.Int) Signer { if V.Sign() != 0 && isProtectedV(V) { - return EIP155Signer{chainId: deriveChainId(V)} + return NewEIP155Signer(deriveChainId(V)) } else { return HomesteadSigner{} } From aa9a78e4639e8594849be3fa0f92d7f91f67d528 Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Mon, 27 Mar 2017 11:52:39 +0200 Subject: [PATCH 47/57] core, core/types: use non-pointer receiver for Marshal* methods Regenerated with fjl/gencodec@1a75a2161009 Also add ,omitempty to optional GenesisAccount fields. --- core/gen_genesis.go | 66 +++++++++++++++++----------------- core/gen_genesis_account.go | 26 ++++++-------- core/genesis.go | 6 ++-- core/types/gen_header_json.go | 52 +++++++++++++-------------- core/types/gen_log_json.go | 36 +++++++++---------- core/types/gen_receipt_json.go | 24 ++++++------- core/types/gen_tx_json.go | 8 ++--- 7 files changed, 106 insertions(+), 112 deletions(-) diff --git a/core/gen_genesis.go b/core/gen_genesis.go index b5561ba454..eb86567b7b 100644 --- a/core/gen_genesis.go +++ b/core/gen_genesis.go @@ -1,4 +1,4 @@ -// generated by github.com/fjl/gencodec, do not edit. +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. package core @@ -13,31 +13,29 @@ import ( "github.com/ethereum/go-ethereum/params" ) -func (g *Genesis) MarshalJSON() ([]byte, error) { +func (g Genesis) MarshalJSON() ([]byte, error) { type GenesisJSON struct { - ChainConfig *params.ChainConfig `json:"config" optional:"true"` - Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` - Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` - ParentHash *common.Hash `json:"parentHash" optional:"true"` - ExtraData hexutil.Bytes `json:"extraData" optional:"true"` - GasLimit *math.HexOrDecimal64 `json:"gasLimit"` - Difficulty *math.HexOrDecimal256 `json:"difficulty"` - Mixhash *common.Hash `json:"mixHash" optional:"true"` - Coinbase *common.Address `json:"coinbase" optional:"true"` - Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` + Config *params.ChainConfig `json:"config" optional:"true"` + Nonce math.HexOrDecimal64 `json:"nonce" optional:"true"` + Timestamp math.HexOrDecimal64 `json:"timestamp" optional:"true"` + ParentHash common.Hash `json:"parentHash" optional:"true"` + ExtraData hexutil.Bytes `json:"extraData" optional:"true"` + GasLimit math.HexOrDecimal64 `json:"gasLimit"` + Difficulty *math.HexOrDecimal256 `json:"difficulty"` + Mixhash common.Hash `json:"mixHash" optional:"true"` + Coinbase common.Address `json:"coinbase" optional:"true"` + Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` } var enc GenesisJSON - enc.ChainConfig = g.Config - enc.Nonce = (*math.HexOrDecimal64)(&g.Nonce) - enc.Timestamp = (*math.HexOrDecimal64)(&g.Timestamp) - enc.ParentHash = &g.ParentHash - if g.ExtraData != nil { - enc.ExtraData = g.ExtraData - } - enc.GasLimit = (*math.HexOrDecimal64)(&g.GasLimit) + enc.Config = g.Config + enc.Nonce = math.HexOrDecimal64(g.Nonce) + enc.Timestamp = math.HexOrDecimal64(g.Timestamp) + enc.ParentHash = g.ParentHash + enc.ExtraData = g.ExtraData + enc.GasLimit = math.HexOrDecimal64(g.GasLimit) enc.Difficulty = (*math.HexOrDecimal256)(g.Difficulty) - enc.Mixhash = &g.Mixhash - enc.Coinbase = &g.Coinbase + enc.Mixhash = g.Mixhash + enc.Coinbase = g.Coinbase if g.Alloc != nil { enc.Alloc = make(map[common.UnprefixedAddress]GenesisAccount, len(g.Alloc)) for k, v := range g.Alloc { @@ -49,24 +47,24 @@ func (g *Genesis) MarshalJSON() ([]byte, error) { func (g *Genesis) UnmarshalJSON(input []byte) error { type GenesisJSON struct { - ChainConfig *params.ChainConfig `json:"config" optional:"true"` - Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` - Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` - ParentHash *common.Hash `json:"parentHash" optional:"true"` - ExtraData hexutil.Bytes `json:"extraData" optional:"true"` - GasLimit *math.HexOrDecimal64 `json:"gasLimit"` - Difficulty *math.HexOrDecimal256 `json:"difficulty"` - Mixhash *common.Hash `json:"mixHash" optional:"true"` - Coinbase *common.Address `json:"coinbase" optional:"true"` - Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` + Config *params.ChainConfig `json:"config" optional:"true"` + Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + Timestamp *math.HexOrDecimal64 `json:"timestamp" optional:"true"` + ParentHash *common.Hash `json:"parentHash" optional:"true"` + ExtraData hexutil.Bytes `json:"extraData" optional:"true"` + GasLimit *math.HexOrDecimal64 `json:"gasLimit"` + Difficulty *math.HexOrDecimal256 `json:"difficulty"` + Mixhash *common.Hash `json:"mixHash" optional:"true"` + Coinbase *common.Address `json:"coinbase" optional:"true"` + Alloc map[common.UnprefixedAddress]GenesisAccount `json:"alloc"` } var dec GenesisJSON if err := json.Unmarshal(input, &dec); err != nil { return err } var x Genesis - if dec.ChainConfig != nil { - x.Config = dec.ChainConfig + if dec.Config != nil { + x.Config = dec.Config } if dec.Nonce != nil { x.Nonce = uint64(*dec.Nonce) diff --git a/core/gen_genesis_account.go b/core/gen_genesis_account.go index 2dda122f27..8885603aa8 100644 --- a/core/gen_genesis_account.go +++ b/core/gen_genesis_account.go @@ -1,4 +1,4 @@ -// generated by github.com/fjl/gencodec, do not edit. +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. package core @@ -12,31 +12,27 @@ import ( "github.com/ethereum/go-ethereum/common/math" ) -func (g *GenesisAccount) MarshalJSON() ([]byte, error) { +func (g GenesisAccount) MarshalJSON() ([]byte, error) { type GenesisAccountJSON struct { - Code hexutil.Bytes `json:"code" optional:"true"` - Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` + Code hexutil.Bytes `json:"code,omitempty" optional:"true"` + Storage map[common.Hash]common.Hash `json:"storage,omitempty" optional:"true"` Balance *math.HexOrDecimal256 `json:"balance"` - Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + Nonce math.HexOrDecimal64 `json:"nonce,omitempty" optional:"true"` } var enc GenesisAccountJSON - if g.Code != nil { - enc.Code = g.Code - } - if g.Storage != nil { - enc.Storage = g.Storage - } + enc.Code = g.Code + enc.Storage = g.Storage enc.Balance = (*math.HexOrDecimal256)(g.Balance) - enc.Nonce = (*math.HexOrDecimal64)(&g.Nonce) + enc.Nonce = math.HexOrDecimal64(g.Nonce) return json.Marshal(&enc) } func (g *GenesisAccount) UnmarshalJSON(input []byte) error { type GenesisAccountJSON struct { - Code hexutil.Bytes `json:"code" optional:"true"` - Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` + Code hexutil.Bytes `json:"code,omitempty" optional:"true"` + Storage map[common.Hash]common.Hash `json:"storage,omitempty" optional:"true"` Balance *math.HexOrDecimal256 `json:"balance"` - Nonce *math.HexOrDecimal64 `json:"nonce" optional:"true"` + Nonce *math.HexOrDecimal64 `json:"nonce,omitempty" optional:"true"` } var dec GenesisAccountJSON if err := json.Unmarshal(input, &dec); err != nil { diff --git a/core/genesis.go b/core/genesis.go index 08d4ae2d19..34725241ec 100644 --- a/core/genesis.go +++ b/core/genesis.go @@ -58,10 +58,10 @@ type GenesisAlloc map[common.Address]GenesisAccount // GenesisAccount is an account in the state of the genesis block. type GenesisAccount struct { - Code []byte `json:"code" optional:"true"` - Storage map[common.Hash]common.Hash `json:"storage" optional:"true"` + Code []byte `json:"code,omitempty" optional:"true"` + Storage map[common.Hash]common.Hash `json:"storage,omitempty" optional:"true"` Balance *big.Int `json:"balance"` - Nonce uint64 `json:"nonce" optional:"true"` + Nonce uint64 `json:"nonce,omitempty" optional:"true"` } // field type overrides for gencodec diff --git a/core/types/gen_header_json.go b/core/types/gen_header_json.go index 860622e6eb..91663d9d8c 100644 --- a/core/types/gen_header_json.go +++ b/core/types/gen_header_json.go @@ -1,4 +1,4 @@ -// generated by github.com/fjl/gencodec, do not edit. +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. package types @@ -11,40 +11,40 @@ import ( "github.com/ethereum/go-ethereum/common/hexutil" ) -func (h *Header) MarshalJSON() ([]byte, error) { +func (h Header) MarshalJSON() ([]byte, error) { type HeaderJSON struct { - ParentHash *common.Hash `json:"parentHash"` - UncleHash *common.Hash `json:"sha3Uncles"` - Coinbase *common.Address `json:"miner"` - Root *common.Hash `json:"stateRoot"` - TxHash *common.Hash `json:"transactionsRoot"` - ReceiptHash *common.Hash `json:"receiptsRoot"` - Bloom *Bloom `json:"logsBloom"` - Difficulty *hexutil.Big `json:"difficulty"` - Number *hexutil.Big `json:"number"` - GasLimit *hexutil.Big `json:"gasLimit"` - GasUsed *hexutil.Big `json:"gasUsed"` - Time *hexutil.Big `json:"timestamp"` - Extra hexutil.Bytes `json:"extraData"` - MixDigest *common.Hash `json:"mixHash"` - Nonce *BlockNonce `json:"nonce"` + ParentHash common.Hash `json:"parentHash"` + UncleHash common.Hash `json:"sha3Uncles"` + Coinbase common.Address `json:"miner"` + Root common.Hash `json:"stateRoot"` + TxHash common.Hash `json:"transactionsRoot"` + ReceiptHash common.Hash `json:"receiptsRoot"` + Bloom Bloom `json:"logsBloom"` + Difficulty *hexutil.Big `json:"difficulty"` + Number *hexutil.Big `json:"number"` + GasLimit *hexutil.Big `json:"gasLimit"` + GasUsed *hexutil.Big `json:"gasUsed"` + Time *hexutil.Big `json:"timestamp"` + Extra hexutil.Bytes `json:"extraData"` + MixDigest common.Hash `json:"mixHash"` + Nonce BlockNonce `json:"nonce"` } var enc HeaderJSON - enc.ParentHash = &h.ParentHash - enc.UncleHash = &h.UncleHash - enc.Coinbase = &h.Coinbase - enc.Root = &h.Root - enc.TxHash = &h.TxHash - enc.ReceiptHash = &h.ReceiptHash - enc.Bloom = &h.Bloom + enc.ParentHash = h.ParentHash + enc.UncleHash = h.UncleHash + enc.Coinbase = h.Coinbase + enc.Root = h.Root + enc.TxHash = h.TxHash + enc.ReceiptHash = h.ReceiptHash + enc.Bloom = h.Bloom enc.Difficulty = (*hexutil.Big)(h.Difficulty) enc.Number = (*hexutil.Big)(h.Number) enc.GasLimit = (*hexutil.Big)(h.GasLimit) enc.GasUsed = (*hexutil.Big)(h.GasUsed) enc.Time = (*hexutil.Big)(h.Time) enc.Extra = h.Extra - enc.MixDigest = &h.MixDigest - enc.Nonce = &h.Nonce + enc.MixDigest = h.MixDigest + enc.Nonce = h.Nonce return json.Marshal(&enc) } diff --git a/core/types/gen_log_json.go b/core/types/gen_log_json.go index ef2cdfd890..5c8032953c 100644 --- a/core/types/gen_log_json.go +++ b/core/types/gen_log_json.go @@ -1,4 +1,4 @@ -// generated by github.com/fjl/gencodec, do not edit. +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. package types @@ -10,28 +10,28 @@ import ( "github.com/ethereum/go-ethereum/common/hexutil" ) -func (l *Log) MarshalJSON() ([]byte, error) { +func (l Log) MarshalJSON() ([]byte, error) { type LogJSON struct { - Address *common.Address `json:"address"` - Topics []common.Hash `json:"topics"` - Data hexutil.Bytes `json:"data"` - BlockNumber *hexutil.Uint64 `json:"blockNumber" optional:"yes"` - TxHash *common.Hash `json:"transactionHash"` - TxIndex *hexutil.Uint `json:"transactionIndex"` - BlockHash *common.Hash `json:"blockHash" optional:"yes"` - Index *hexutil.Uint `json:"logIndex"` - Removed *bool `json:"removed" optional:"yes"` + Address common.Address `json:"address"` + Topics []common.Hash `json:"topics"` + Data hexutil.Bytes `json:"data"` + BlockNumber hexutil.Uint64 `json:"blockNumber" optional:"yes"` + TxHash common.Hash `json:"transactionHash"` + TxIndex hexutil.Uint `json:"transactionIndex"` + BlockHash common.Hash `json:"blockHash" optional:"yes"` + Index hexutil.Uint `json:"logIndex"` + Removed bool `json:"removed" optional:"yes"` } var enc LogJSON - enc.Address = &l.Address + enc.Address = l.Address enc.Topics = l.Topics enc.Data = l.Data - enc.BlockNumber = (*hexutil.Uint64)(&l.BlockNumber) - enc.TxHash = &l.TxHash - enc.TxIndex = (*hexutil.Uint)(&l.TxIndex) - enc.BlockHash = &l.BlockHash - enc.Index = (*hexutil.Uint)(&l.Index) - enc.Removed = &l.Removed + enc.BlockNumber = hexutil.Uint64(l.BlockNumber) + enc.TxHash = l.TxHash + enc.TxIndex = hexutil.Uint(l.TxIndex) + enc.BlockHash = l.BlockHash + enc.Index = hexutil.Uint(l.Index) + enc.Removed = l.Removed return json.Marshal(&enc) } diff --git a/core/types/gen_receipt_json.go b/core/types/gen_receipt_json.go index b9e9bee260..6583a8ec0b 100644 --- a/core/types/gen_receipt_json.go +++ b/core/types/gen_receipt_json.go @@ -1,4 +1,4 @@ -// generated by github.com/fjl/gencodec, do not edit. +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. package types @@ -11,23 +11,23 @@ import ( "github.com/ethereum/go-ethereum/common/hexutil" ) -func (r *Receipt) MarshalJSON() ([]byte, error) { +func (r Receipt) MarshalJSON() ([]byte, error) { type ReceiptJSON struct { - PostState hexutil.Bytes `json:"root"` - CumulativeGasUsed *hexutil.Big `json:"cumulativeGasUsed"` - Bloom *Bloom `json:"logsBloom"` - Logs []*Log `json:"logs"` - TxHash *common.Hash `json:"transactionHash"` - ContractAddress *common.Address `json:"contractAddress" optional:"true"` - GasUsed *hexutil.Big `json:"gasUsed"` + PostState hexutil.Bytes `json:"root"` + CumulativeGasUsed *hexutil.Big `json:"cumulativeGasUsed"` + Bloom Bloom `json:"logsBloom"` + Logs []*Log `json:"logs"` + TxHash common.Hash `json:"transactionHash"` + ContractAddress common.Address `json:"contractAddress" optional:"true"` + GasUsed *hexutil.Big `json:"gasUsed"` } var enc ReceiptJSON enc.PostState = r.PostState enc.CumulativeGasUsed = (*hexutil.Big)(r.CumulativeGasUsed) - enc.Bloom = &r.Bloom + enc.Bloom = r.Bloom enc.Logs = r.Logs - enc.TxHash = &r.TxHash - enc.ContractAddress = &r.ContractAddress + enc.TxHash = r.TxHash + enc.ContractAddress = r.ContractAddress enc.GasUsed = (*hexutil.Big)(r.GasUsed) return json.Marshal(&enc) } diff --git a/core/types/gen_tx_json.go b/core/types/gen_tx_json.go index 8bbe629d70..0adcc59b58 100644 --- a/core/types/gen_tx_json.go +++ b/core/types/gen_tx_json.go @@ -1,4 +1,4 @@ -// generated by github.com/fjl/gencodec, do not edit. +// Code generated by github.com/fjl/gencodec. DO NOT EDIT. package types @@ -11,9 +11,9 @@ import ( "github.com/ethereum/go-ethereum/common/hexutil" ) -func (t *txdata) MarshalJSON() ([]byte, error) { +func (t txdata) MarshalJSON() ([]byte, error) { type txdataJSON struct { - AccountNonce *hexutil.Uint64 `json:"nonce"` + AccountNonce hexutil.Uint64 `json:"nonce"` Price *hexutil.Big `json:"gasPrice"` GasLimit *hexutil.Big `json:"gasLimit"` Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` @@ -25,7 +25,7 @@ func (t *txdata) MarshalJSON() ([]byte, error) { Hash *common.Hash `json:"hash" optional:"yes" rlp:"-"` } var enc txdataJSON - enc.AccountNonce = (*hexutil.Uint64)(&t.AccountNonce) + enc.AccountNonce = hexutil.Uint64(t.AccountNonce) enc.Price = (*hexutil.Big)(t.Price) enc.GasLimit = (*hexutil.Big)(t.GasLimit) enc.Recipient = t.Recipient From baf20010e72e31a34e0e2f7c58ccb8135e388b83 Mon Sep 17 00:00:00 2001 From: bas-vk Date: Wed, 29 Mar 2017 11:59:13 +0200 Subject: [PATCH 48/57] core/types: rename txdata.gasLimit -> txdata.gas in JSON (#13848) --- core/types/gen_tx_json.go | 6 +++--- core/types/transaction.go | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/core/types/gen_tx_json.go b/core/types/gen_tx_json.go index 0adcc59b58..6101b96374 100644 --- a/core/types/gen_tx_json.go +++ b/core/types/gen_tx_json.go @@ -15,7 +15,7 @@ func (t txdata) MarshalJSON() ([]byte, error) { type txdataJSON struct { AccountNonce hexutil.Uint64 `json:"nonce"` Price *hexutil.Big `json:"gasPrice"` - GasLimit *hexutil.Big `json:"gasLimit"` + GasLimit *hexutil.Big `json:"gas"` Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` Amount *hexutil.Big `json:"value"` Payload hexutil.Bytes `json:"input"` @@ -42,7 +42,7 @@ func (t *txdata) UnmarshalJSON(input []byte) error { type txdataJSON struct { AccountNonce *hexutil.Uint64 `json:"nonce"` Price *hexutil.Big `json:"gasPrice"` - GasLimit *hexutil.Big `json:"gasLimit"` + GasLimit *hexutil.Big `json:"gas"` Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` Amount *hexutil.Big `json:"value"` Payload hexutil.Bytes `json:"input"` @@ -65,7 +65,7 @@ func (t *txdata) UnmarshalJSON(input []byte) error { } x.Price = (*big.Int)(dec.Price) if dec.GasLimit == nil { - return errors.New("missing required field 'gasLimit' for txdata") + return errors.New("missing required field 'gas' for txdata") } x.GasLimit = (*big.Int)(dec.GasLimit) if dec.Recipient != nil { diff --git a/core/types/transaction.go b/core/types/transaction.go index ee2f25b52c..3945684a15 100644 --- a/core/types/transaction.go +++ b/core/types/transaction.go @@ -57,7 +57,7 @@ type Transaction struct { type txdata struct { AccountNonce uint64 `json:"nonce"` Price *big.Int `json:"gasPrice"` - GasLimit *big.Int `json:"gasLimit"` + GasLimit *big.Int `json:"gas"` Recipient *common.Address `json:"to" optional:"yes" rlp:"nil"` // nil means contract creation Amount *big.Int `json:"value"` Payload []byte `json:"input"` From 1cf2ee4597e3e1902088fd84663d4ce4eff8946a Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Wed, 29 Mar 2017 12:20:57 +0200 Subject: [PATCH 49/57] build: work around cgo linker issue on macOS 10.12.4 (#13849) Fixes #3792 by stripping debug symbols. --- build/ci.go | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/build/ci.go b/build/ci.go index 6224175804..9a6f1e1969 100644 --- a/build/ci.go +++ b/build/ci.go @@ -217,9 +217,16 @@ func doInstall(cmdline []string) { } func buildFlags(env build.Environment) (flags []string) { - // Set gitCommit constant via link-time assignment. + var ld []string if env.Commit != "" { - flags = append(flags, "-ldflags", "-X main.gitCommit="+env.Commit) + ld = append(ld, "-X", "main.gitCommit="+env.Commit) + } + if runtime.GOOS == "darwin" { + ld = append(ld, "-s") + } + + if len(ld) > 0 { + flags = append(flags, "-ldflags", strings.Join(ld, " ")) } return flags } @@ -266,6 +273,7 @@ func doTest(cmdline []string) { coverage = flag.Bool("coverage", false, "Whether to record code coverage") ) flag.CommandLine.Parse(cmdline) + env := build.Env() packages := []string{"./..."} if len(flag.CommandLine.Args()) > 0 { @@ -279,7 +287,7 @@ func doTest(cmdline []string) { spellcheck(packages) } // Run the actual tests. - gotest := goTool("test") + gotest := goTool("test", buildFlags(env)...) // Test a single package at a time. CI builders are slow // and some tests run into timeouts under load. gotest.Args = append(gotest.Args, "-p", "1") From db93641941ec995190921f477d834a1b80c5752c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Thu, 30 Mar 2017 12:52:34 +0300 Subject: [PATCH 50/57] ethstats: work around weird URL scheme parsing issues --- ethstats/ethstats.go | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index 9d494b615d..10f611c795 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -23,10 +23,10 @@ import ( "fmt" "math/big" "net" - "net/url" "regexp" "runtime" "strconv" + "strings" "time" "github.com/ethereum/go-ethereum/common" @@ -128,7 +128,7 @@ func (s *Service) loop() { path := fmt.Sprintf("%s/api", s.host) urls := []string{path} - if parsed, err := url.Parse(path); err == nil && !parsed.IsAbs() { + if !strings.Contains(path, "://") { // url.Parse and url.IsAbs is unsuitable (https://github.com/golang/go/issues/19779) urls = []string{"wss://" + path, "ws://" + path} } // Establish a websocket connection to the server on any supported URL From 105b37f1b4f77a50625dc997eaab9d71c52495df Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Fri, 31 Mar 2017 12:11:01 +0200 Subject: [PATCH 51/57] swarm/api: improve FUSE build constraints, logging and APIs (#3818) * swarm/api: fix build/tests on unsupported platforms Skip FUSE tests if FUSE is unavailable and change build constraints so the 'lesser' platforms aren't mentioned explicitly. The test are compiled on all platforms to prevent regressions in _fallback.go Also gofmt -w -s because why not. * internal/web3ext: fix swarmfs wrappers Remove inputFormatter specifications so users get an error when passing the wrong number of arguments. * swarm/api: improve FUSE-related logging and APIs The API now returns JSON objects instead of strings. Log messages for invalid arguments are removed. --- internal/web3ext/web3ext.go | 43 ++--- swarm/api/fuse.go | 12 +- swarm/api/swarmfs.go | 11 +- ...swarmfs_windows.go => swarmfs_fallback.go} | 32 ++-- .../{swarmfs_unix_test.go => swarmfs_test.go} | 27 +-- swarm/api/swarmfs_unix.go | 173 ++++++++---------- 6 files changed, 127 insertions(+), 171 deletions(-) rename swarm/api/{swarmfs_windows.go => swarmfs_fallback.go} (64%) rename swarm/api/{swarmfs_unix_test.go => swarmfs_test.go} (90%) diff --git a/internal/web3ext/web3ext.go b/internal/web3ext/web3ext.go index 79f7817810..4a8425d5ca 100644 --- a/internal/web3ext/web3ext.go +++ b/internal/web3ext/web3ext.go @@ -29,10 +29,8 @@ var Modules = map[string]string{ "shh": Shh_JS, "swarmfs": SWARMFS_JS, "txpool": TxPool_JS, - } - const Chequebook_JS = ` web3._extend({ property: 'chequebook', @@ -491,28 +489,25 @@ web3._extend({ ` const SWARMFS_JS = ` web3._extend({ - property: 'swarmfs', - methods: - [ - new web3._extend.Method({ - name: 'mount', - call: 'swarmfs_mount', - params: 2, - inputFormatter: [null,null] - }), - new web3._extend.Method({ - name: 'unmount', - call: 'swarmfs_unmount', - params: 1, - inputFormatter: [null] - }), - new web3._extend.Method({ - name: 'listmounts', - call: 'swarmfs_listmounts', - params: 0, - inputFormatter: [] - }) - ] + property: 'swarmfs', + methods: + [ + new web3._extend.Method({ + name: 'mount', + call: 'swarmfs_mount', + params: 2 + }), + new web3._extend.Method({ + name: 'unmount', + call: 'swarmfs_unmount', + params: 1 + }), + new web3._extend.Method({ + name: 'listmounts', + call: 'swarmfs_listmounts', + params: 0 + }) + ] }); ` diff --git a/swarm/api/fuse.go b/swarm/api/fuse.go index 4b1f817f8c..2a1cc9bf1b 100644 --- a/swarm/api/fuse.go +++ b/swarm/api/fuse.go @@ -14,7 +14,9 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -// +build !windows +// +build linux darwin freebsd + +// Data structures used for Fuse filesystem, serving directories and serving files to Fuse driver. package api @@ -29,10 +31,6 @@ import ( "golang.org/x/net/context" ) - - - -// Data structures used for Fuse filesystem, serving directories and serving files to Fuse driver type FS struct { root *Dir } @@ -55,7 +53,6 @@ type File struct { reader storage.LazySectionReader } - // Functions which satisfy the Fuse File System requests func (filesystem *FS) Root() (fs.Node, error) { return filesystem.root, nil @@ -104,14 +101,12 @@ func (d *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) { } func (file *File) Attr(ctx context.Context, a *fuse.Attr) error { - a.Inode = file.inode //TODO: need to get permission as argument a.Mode = 0500 a.Uid = uint32(os.Getuid()) a.Gid = uint32(os.Getegid()) - reader := file.swarmApi.Retrieve(file.key) quitC := make(chan bool) size, err := reader.Size(quitC) @@ -135,5 +130,4 @@ func (file *File) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.Re } resp.Data = buf[:n] return err - } diff --git a/swarm/api/swarmfs.go b/swarm/api/swarmfs.go index 8427d3c5b1..78a61cf9de 100644 --- a/swarm/api/swarmfs.go +++ b/swarm/api/swarmfs.go @@ -17,25 +17,22 @@ package api import ( - "time" "sync" + "time" ) const ( Swarmfs_Version = "0.1" - mountTimeout = time.Second * 5 - maxFuseMounts = 5 + mountTimeout = time.Second * 5 + maxFuseMounts = 5 ) - type SwarmFS struct { swarmApi *Api activeMounts map[string]*MountInfo activeLock *sync.RWMutex } - - func NewSwarmFS(api *Api) *SwarmFS { swarmfs := &SwarmFS{ swarmApi: api, @@ -44,5 +41,3 @@ func NewSwarmFS(api *Api) *SwarmFS { } return swarmfs } - - diff --git a/swarm/api/swarmfs_windows.go b/swarm/api/swarmfs_fallback.go similarity index 64% rename from swarm/api/swarmfs_windows.go rename to swarm/api/swarmfs_fallback.go index 525a25399a..c6ac07d148 100644 --- a/swarm/api/swarmfs_windows.go +++ b/swarm/api/swarmfs_fallback.go @@ -14,35 +14,37 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -// +build windows +// +build !linux,!darwin,!freebsd package api import ( - "github.com/ethereum/go-ethereum/log" + "errors" ) -// Dummy struct and functions to satsfy windows build +var errNoFUSE = errors.New("FUSE is not supported on this platform") + +func isFUSEUnsupportedError(err error) bool { + return err == errNoFUSE +} + type MountInfo struct { + MountPoint string + ManifestHash string } - -func (self *SwarmFS) Mount(mhash, mountpoint string) error { - log.Info("Platform not supported") - return nil +func (self *SwarmFS) Mount(mhash, mountpoint string) (*MountInfo, error) { + return nil, errNoFUSE } -func (self *SwarmFS) Unmount(mountpoint string) error { - log.Info("Platform not supported") - return nil +func (self *SwarmFS) Unmount(mountpoint string) (bool, error) { + return false, errNoFUSE } -func (self *SwarmFS) Listmounts() (string, error) { - log.Info("Platform not supported") - return "",nil +func (self *SwarmFS) Listmounts() ([]*MountInfo, error) { + return nil, errNoFUSE } func (self *SwarmFS) Stop() error { - log.Info("Platform not supported") return nil -} \ No newline at end of file +} diff --git a/swarm/api/swarmfs_unix_test.go b/swarm/api/swarmfs_test.go similarity index 90% rename from swarm/api/swarmfs_unix_test.go rename to swarm/api/swarmfs_test.go index 4f59dba5b6..45d2dc1692 100644 --- a/swarm/api/swarmfs_unix_test.go +++ b/swarm/api/swarmfs_test.go @@ -14,8 +14,6 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -// +build linux darwin - package api import ( @@ -35,7 +33,6 @@ func testFuseFileSystem(t *testing.T, f func(*FileSystem)) { } func createTestFiles(t *testing.T, files []string) { - os.RemoveAll(testUploadDir) os.RemoveAll(testMountDir) defer os.MkdirAll(testMountDir, 0777) @@ -58,9 +55,7 @@ func createTestFiles(t *testing.T, files []string) { } func compareFiles(t *testing.T, files []string) { - for f := range files { - sourceFile := filepath.Join(testUploadDir, files[f]) destinationFile := filepath.Join(testMountDir, files[f]) @@ -81,12 +76,10 @@ func compareFiles(t *testing.T, files []string) { if dfinfo.Mode().Perm().String() != "-r-x------" { t.Fatalf("Permission is not 0500for file: %v", err) } - } } func doHashTest(fs *FileSystem, t *testing.T, ensName string, files ...string) { - createTestFiles(t, files) bzzhash, err := fs.Upload(testUploadDir, "") if err != nil { @@ -94,29 +87,29 @@ func doHashTest(fs *FileSystem, t *testing.T, ensName string, files ...string) { } swarmfs := NewSwarmFS(fs.api) - _ ,err1 := swarmfs.Mount(bzzhash, testMountDir) - if err1 != nil { + defer swarmfs.Stop() - t.Fatalf("Error mounting hash %v: %v", bzzhash, err) + _, err = swarmfs.Mount(bzzhash, testMountDir) + if isFUSEUnsupportedError(err) { + t.Skip("FUSE not supported:", err) + } else if err != nil { + t.Fatalf("Error mounting hash %v: %v", bzzhash, err) } + compareFiles(t, files) - _, err2 := swarmfs.Unmount(testMountDir) - if err2 != nil { - t.Fatalf("Error unmounting path %v: %v", testMountDir, err) - } - swarmfs.Stop() + if _, err := swarmfs.Unmount(testMountDir); err != nil { + t.Fatalf("Error unmounting path %v: %v", testMountDir, err) + } } // mounting with manifest Hash func TestFuseMountingScenarios(t *testing.T) { testFuseFileSystem(t, func(fs *FileSystem) { - //doHashTest(fs,t, "test","1.txt") doHashTest(fs, t, "", "1.txt") doHashTest(fs, t, "", "1.txt", "11.txt", "111.txt", "two/2.txt", "two/two/2.txt", "three/3.txt") doHashTest(fs, t, "", "1/2/3/4/5/6/7/8/9/10/11/12/1.txt") doHashTest(fs, t, "", "one/one.txt", "one.txt", "once/one.txt", "one/one/one.txt") - }) } diff --git a/swarm/api/swarmfs_unix.go b/swarm/api/swarmfs_unix.go index ae0216e1d7..e696c6b9a6 100644 --- a/swarm/api/swarmfs_unix.go +++ b/swarm/api/swarmfs_unix.go @@ -14,77 +14,86 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -// +build linux darwin +// +build linux darwin freebsd package api import ( - "path/filepath" + "errors" "fmt" + "os" + "path/filepath" "strings" - "time" - "github.com/ethereum/go-ethereum/swarm/storage" - "bazil.org/fuse" - "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/common" - "bazil.org/fuse/fs" "sync" -) + "time" + "bazil.org/fuse" + "bazil.org/fuse/fs" + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/swarm/storage" +) var ( - inode uint64 = 1 - inodeLock sync.RWMutex + inode uint64 = 1 + inodeLock sync.RWMutex ) -// information about every active mount +var ( + errEmptyMountPoint = errors.New("need non-empty mount point") + errMaxMountCount = errors.New("max FUSE mount count reached") + errMountTimeout = errors.New("mount timeout") +) + +func isFUSEUnsupportedError(err error) bool { + if perr, ok := err.(*os.PathError); ok { + return perr.Op == "open" && perr.Path == "/dev/fuse" + } + return err == fuse.ErrOSXFUSENotFound +} + +// MountInfo contains information about every active mount type MountInfo struct { - mountPoint string - manifestHash string + MountPoint string + ManifestHash string resolvedKey storage.Key rootDir *Dir fuseConnection *fuse.Conn } +// newInode creates a new inode number. // Inode numbers need to be unique, they are used for caching inside fuse -func NewInode() uint64 { +func newInode() uint64 { inodeLock.Lock() - defer inodeLock.Unlock() + defer inodeLock.Unlock() inode += 1 return inode } - - -func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { +func (self *SwarmFS) Mount(mhash, mountpoint string) (*MountInfo, error) { + if mountpoint == "" { + return nil, errEmptyMountPoint + } + cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint)) + if err != nil { + return nil, err + } self.activeLock.Lock() defer self.activeLock.Unlock() noOfActiveMounts := len(self.activeMounts) if noOfActiveMounts >= maxFuseMounts { - err := fmt.Errorf("Max mount count reached. Cannot mount %s ", mountpoint) - log.Warn(err.Error()) - return err.Error(), err - } - - cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint)) - if err != nil { - return err.Error(), err + return nil, errMaxMountCount } if _, ok := self.activeMounts[cleanedMountPoint]; ok { - err := fmt.Errorf("Mountpoint %s already mounted.", cleanedMountPoint) - log.Warn(err.Error()) - return err.Error(), err + return nil, fmt.Errorf("%s is already mounted", cleanedMountPoint) } - log.Info(fmt.Sprintf("Attempting to mount %s ", cleanedMountPoint)) key, _, path, err := self.swarmApi.parseAndResolve(mhash, true) if err != nil { - errStr := fmt.Sprintf("Could not resolve %s : %v", mhash, err) - log.Warn(errStr) - return errStr, err + return nil, fmt.Errorf("can't resolve %q: %v", mhash, err) } if len(path) > 0 { @@ -94,15 +103,13 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { quitC := make(chan bool) trie, err := loadManifest(self.swarmApi.dpa, key, quitC) if err != nil { - errStr := fmt.Sprintf("fs.Download: loadManifestTrie error: %v", err) - log.Warn(errStr) - return errStr, err + return nil, fmt.Errorf("can't load manifest %v: %v", key.String(), err) } dirTree := map[string]*Dir{} rootDir := &Dir{ - inode: NewInode(), + inode: newInode(), name: "root", directories: nil, files: nil, @@ -110,7 +117,6 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { dirTree["root"] = rootDir err = trie.listWithPrefix(path, quitC, func(entry *manifestTrieEntry, suffix string) { - key = common.Hex2Bytes(entry.Hash) fullpath := "/" + suffix basepath := filepath.Dir(fullpath) @@ -126,7 +132,7 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { if _, ok := dirTree[dirUntilNow]; !ok { dirTree[dirUntilNow] = &Dir{ - inode: NewInode(), + inode: newInode(), name: thisDir, path: dirUntilNow, directories: nil, @@ -142,7 +148,7 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { } } thisFile := &File{ - inode: NewInode(), + inode: newInode(), name: filename, path: fullpath, key: key, @@ -154,113 +160,84 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) { fconn, err := fuse.Mount(cleanedMountPoint, fuse.FSName("swarmfs"), fuse.VolumeName(mhash)) if err != nil { fuse.Unmount(cleanedMountPoint) - errStr := fmt.Sprintf("Mounting %s encountered error: %v", cleanedMountPoint, err) - log.Warn(errStr) - return errStr, err + log.Warn("Error mounting swarm manifest", "mountpoint", cleanedMountPoint, "err", err) + return nil, err } mounterr := make(chan error, 1) go func() { - log.Info(fmt.Sprintf("Serving %s at %s", mhash, cleanedMountPoint)) filesys := &FS{root: rootDir} if err := fs.Serve(fconn, filesys); err != nil { - log.Warn(fmt.Sprintf("Could not Serve FS error: %v", err)) + mounterr <- err } }() // Check if the mount process has an error to report. select { - case <-time.After(mountTimeout): - err := fmt.Errorf("Mounting %s timed out.", cleanedMountPoint) - log.Warn(err.Error()) - return err.Error(), err + fuse.Unmount(cleanedMountPoint) + return nil, errMountTimeout case err := <-mounterr: - errStr := fmt.Sprintf("Mounting %s encountered error: %v", cleanedMountPoint, err) - log.Warn(errStr) - return errStr, err + log.Warn("Error serving swarm FUSE FS", "mountpoint", cleanedMountPoint, "err", err) + return nil, err case <-fconn.Ready: - log.Debug(fmt.Sprintf("Mounting connection succeeded for : %v", cleanedMountPoint)) + log.Info("Now serving swarm FUSE FS", "manifest", mhash, "mountpoint", cleanedMountPoint) } - - - //Assemble and Store the mount information for future use - mountInformation := &MountInfo{ - mountPoint: cleanedMountPoint, - manifestHash: mhash, + // Assemble and Store the mount information for future use + mi := &MountInfo{ + MountPoint: cleanedMountPoint, + ManifestHash: mhash, resolvedKey: key, rootDir: rootDir, fuseConnection: fconn, } - self.activeMounts[cleanedMountPoint] = mountInformation - - succString := fmt.Sprintf("Mounting successful for %s", cleanedMountPoint) - log.Info(succString) - - return succString, nil + self.activeMounts[cleanedMountPoint] = mi + return mi, nil } -func (self *SwarmFS) Unmount(mountpoint string) (string, error) { - +func (self *SwarmFS) Unmount(mountpoint string) (bool, error) { self.activeLock.Lock() defer self.activeLock.Unlock() cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint)) if err != nil { - return err.Error(), err + return false, err } - // Get the mount information based on the mountpoint argument mountInfo := self.activeMounts[cleanedMountPoint] - - - if mountInfo == nil || mountInfo.mountPoint != cleanedMountPoint { - err := fmt.Errorf("Could not find mount information for %s ", cleanedMountPoint) - log.Warn(err.Error()) - return err.Error(), err + if mountInfo == nil || mountInfo.MountPoint != cleanedMountPoint { + return false, fmt.Errorf("%s is not mounted", cleanedMountPoint) } - err = fuse.Unmount(cleanedMountPoint) if err != nil { - //TODO: try forceful unmount if normal unmount fails - errStr := fmt.Sprintf("UnMount error: %v", err) - log.Warn(errStr) - return errStr, err + // TODO(jmozah): try forceful unmount if normal unmount fails + return false, err } + // remove the mount information from the active map mountInfo.fuseConnection.Close() - - //remove the mount information from the active map delete(self.activeMounts, cleanedMountPoint) - - succString := fmt.Sprintf("UnMounting %v succeeded", cleanedMountPoint) - log.Info(succString) - return succString, nil + return true, nil } -func (self *SwarmFS) Listmounts() (string, error) { - +func (self *SwarmFS) Listmounts() []*MountInfo { self.activeLock.RLock() defer self.activeLock.RUnlock() - var rows []string - for mp := range self.activeMounts { - mountInfo := self.activeMounts[mp] - rows = append(rows, fmt.Sprintf("Swarm Root: %s, Mount Point: %s ", mountInfo.manifestHash, mountInfo.mountPoint)) + rows := make([]*MountInfo, 0, len(self.activeMounts)) + for _, mi := range self.activeMounts { + rows = append(rows, mi) } - - return strings.Join(rows, "\n"), nil + return rows } func (self *SwarmFS) Stop() bool { - for mp := range self.activeMounts { mountInfo := self.activeMounts[mp] - self.Unmount(mountInfo.mountPoint) + self.Unmount(mountInfo.MountPoint) } - return true } From 96d1a4aee6c21b0cd247513cdd9d3acc78df378d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Fri, 31 Mar 2017 15:06:54 +0300 Subject: [PATCH 52/57] ethstats: sanity check ethstats history queries --- ethstats/ethstats.go | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index 10f611c795..3ebbe3fc3b 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -537,10 +537,16 @@ func (s *Service) reportHistory(conn *websocket.Conn, list []uint64) error { // Gather the batch of blocks to report history := make([]*blockStats, len(indexes)) for i, number := range indexes { + var block *types.Block if s.eth != nil { - history[len(history)-1-i] = s.assembleBlockStats(s.eth.BlockChain().GetBlockByNumber(number)) + block = s.eth.BlockChain().GetBlockByNumber(number) } else { - history[len(history)-1-i] = s.assembleBlockStats(types.NewBlockWithHeader(s.les.BlockChain().GetHeaderByNumber(number))) + if header := s.les.BlockChain().GetHeaderByNumber(number); header != nil { + block = types.NewBlockWithHeader(header) + } + } + if block != nil { + history[len(history)-1-i] = s.assembleBlockStats(block) } } // Assemble the history report and send it to the server From fb98a8c6c2964f59ef2be7677c81260181074db7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Tue, 4 Apr 2017 11:41:17 +0300 Subject: [PATCH 53/57] ethstats: cut short unavailable history responses --- ethstats/ethstats.go | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/ethstats/ethstats.go b/ethstats/ethstats.go index 3ebbe3fc3b..aec8eb8bf6 100644 --- a/ethstats/ethstats.go +++ b/ethstats/ethstats.go @@ -537,6 +537,7 @@ func (s *Service) reportHistory(conn *websocket.Conn, list []uint64) error { // Gather the batch of blocks to report history := make([]*blockStats, len(indexes)) for i, number := range indexes { + // Retrieve the next block if it's known to us var block *types.Block if s.eth != nil { block = s.eth.BlockChain().GetBlockByNumber(number) @@ -545,13 +546,20 @@ func (s *Service) reportHistory(conn *websocket.Conn, list []uint64) error { block = types.NewBlockWithHeader(header) } } + // If we do have the block, add to the history and continue if block != nil { history[len(history)-1-i] = s.assembleBlockStats(block) + continue } + // Ran out of blocks, cut the report short and send + history = history[len(history)-i:] } // Assemble the history report and send it to the server - log.Trace("Sending historical blocks to ethstats", "first", history[0].Number, "last", history[len(history)-1].Number) - + if len(history) > 0 { + log.Trace("Sending historical blocks to ethstats", "first", history[0].Number, "last", history[len(history)-1].Number) + } else { + log.Trace("No history to send to stats server") + } stats := map[string]interface{}{ "id": s.node, "history": history, From 09777952ee476ff80d4b6e63b5041ff5ca0e441b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= Date: Wed, 5 Apr 2017 01:16:29 +0300 Subject: [PATCH 54/57] core, consensus: pluggable consensus engines (#3817) This commit adds pluggable consensus engines to go-ethereum. In short, it introduces a generic consensus interface, and refactors the entire codebase to use this interface. --- accounts/abi/bind/backends/simulated.go | 4 +- cmd/evm/disasm.go | 2 +- cmd/geth/main.go | 10 +- cmd/geth/misccmd.go | 4 +- cmd/utils/flags.go | 10 +- consensus/consensus.go | 94 ++++ .../ethash/algorithm.go | 2 +- .../ethash/algorithm_go1.7.go | 2 +- .../ethash/algorithm_go1.8.go | 2 +- .../ethash/algorithm_go1.8_test.go | 2 +- .../ethash/algorithm_test.go | 17 +- consensus/ethash/consensus.go | 496 ++++++++++++++++++ consensus/ethash/consensus_test.go | 79 +++ {pow => consensus/ethash}/ethash.go | 178 ++++--- consensus/ethash/ethash_test.go | 40 ++ consensus/ethash/sealer.go | 146 ++++++ {pow => consensus/ethash}/xor.go | 2 +- consensus/misc/dao.go | 85 +++ consensus/misc/forks.go | 43 ++ core/bench_test.go | 6 +- core/block_validator.go | 275 +--------- core/block_validator_test.go | 199 +++++-- core/blockchain.go | 64 +-- core/blockchain_test.go | 97 ++-- core/chain_makers.go | 13 +- core/chain_makers_test.go | 4 +- core/chain_pow.go | 87 --- core/chain_pow_test.go | 238 --------- core/dao_test.go | 14 +- core/database_util_test.go | 60 +-- core/genesis_test.go | 4 +- core/headerchain.go | 149 ++---- core/state_processor.go | 44 +- core/types.go | 30 +- core/types/block.go | 11 +- eth/api.go | 93 ++-- eth/backend.go | 49 +- eth/fetcher/fetcher.go | 12 +- eth/fetcher/fetcher_test.go | 6 +- eth/handler.go | 11 +- eth/handler_test.go | 4 +- eth/helper_test.go | 14 +- internal/ethapi/api.go | 4 +- les/backend.go | 12 +- les/handler.go | 4 +- les/helper_test.go | 16 +- les/server.go | 2 +- light/lightchain.go | 32 +- light/lightchain_test.go | 34 +- light/odr_test.go | 11 +- light/txpool_test.go | 13 +- log/format.go | 6 +- miner/agent.go | 47 +- miner/miner.go | 31 +- miner/remote_agent.go | 33 +- miner/unconfirmed.go | 9 +- miner/worker.go | 84 ++- params/util.go | 4 +- pow/pow.go | 58 -- tests/block_test_util.go | 4 +- trie/iterator.go | 1 + 61 files changed, 1681 insertions(+), 1426 deletions(-) create mode 100644 consensus/consensus.go rename pow/ethash_algo.go => consensus/ethash/algorithm.go (99%) rename pow/ethash_algo_go1.7.go => consensus/ethash/algorithm_go1.7.go (99%) rename pow/ethash_algo_go1.8.go => consensus/ethash/algorithm_go1.8.go (99%) rename pow/ethash_algo_go1.8_test.go => consensus/ethash/algorithm_go1.8_test.go (99%) rename pow/ethash_algo_test.go => consensus/ethash/algorithm_test.go (99%) create mode 100644 consensus/ethash/consensus.go create mode 100644 consensus/ethash/consensus_test.go rename {pow => consensus/ethash}/ethash.go (80%) create mode 100644 consensus/ethash/ethash_test.go create mode 100644 consensus/ethash/sealer.go rename {pow => consensus/ethash}/xor.go (99%) create mode 100644 consensus/misc/dao.go create mode 100644 consensus/misc/forks.go delete mode 100644 core/chain_pow.go delete mode 100644 core/chain_pow_test.go delete mode 100644 pow/pow.go diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go index 3d7e96bf60..43f563159a 100644 --- a/accounts/abi/bind/backends/simulated.go +++ b/accounts/abi/bind/backends/simulated.go @@ -27,6 +27,7 @@ import ( "github.com/ethereum/go-ethereum/accounts/abi/bind" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -34,7 +35,6 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) // This nil assignment ensures compile time that SimulatedBackend implements bind.ContractBackend. @@ -61,7 +61,7 @@ func NewSimulatedBackend(alloc core.GenesisAlloc) *SimulatedBackend { database, _ := ethdb.NewMemDatabase() genesis := core.Genesis{Config: params.AllProtocolChanges, Alloc: alloc} genesis.MustCommit(database) - blockchain, _ := core.NewBlockChain(database, genesis.Config, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + blockchain, _ := core.NewBlockChain(database, genesis.Config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) backend := &SimulatedBackend{database: database, blockchain: blockchain, config: genesis.Config} backend.rollback() return backend diff --git a/cmd/evm/disasm.go b/cmd/evm/disasm.go index 01a8c60ba9..a78b2a8e18 100644 --- a/cmd/evm/disasm.go +++ b/cmd/evm/disasm.go @@ -20,10 +20,10 @@ import ( "errors" "fmt" "io/ioutil" + "strings" "github.com/ethereum/go-ethereum/core/asm" cli "gopkg.in/urfave/cli.v1" - "strings" ) var disasmCommand = cli.Command{ diff --git a/cmd/geth/main.go b/cmd/geth/main.go index cc6d3ac6a1..e942d53c84 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -303,7 +303,15 @@ func startNode(ctx *cli.Context, stack *node.Node) { if err := stack.Service(ðereum); err != nil { utils.Fatalf("ethereum service not running: %v", err) } - if err := ethereum.StartMining(ctx.GlobalInt(utils.MinerThreadsFlag.Name)); err != nil { + if threads := ctx.GlobalInt(utils.MinerThreadsFlag.Name); threads > 0 { + type threaded interface { + SetThreads(threads int) + } + if th, ok := ethereum.Engine().(threaded); ok { + th.SetThreads(threads) + } + } + if err := ethereum.StartMining(); err != nil { utils.Fatalf("Failed to start mining: %v", err) } } diff --git a/cmd/geth/misccmd.go b/cmd/geth/misccmd.go index 073c36beb2..079f49310c 100644 --- a/cmd/geth/misccmd.go +++ b/cmd/geth/misccmd.go @@ -26,9 +26,9 @@ import ( "strings" "github.com/ethereum/go-ethereum/cmd/utils" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "gopkg.in/urfave/cli.v1" ) @@ -87,7 +87,7 @@ func makedag(ctx *cli.Context) error { utils.Fatalf("Can't find dir") } fmt.Println("making DAG, this could take awhile...") - pow.MakeDataset(blockNum, dir) + ethash.MakeDataset(blockNum, dir) } default: wrongArgs() diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go index 478e08834b..acdf5d5dcb 100644 --- a/cmd/utils/flags.go +++ b/cmd/utils/flags.go @@ -32,6 +32,7 @@ import ( "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts/keystore" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/vm" @@ -49,7 +50,6 @@ import ( "github.com/ethereum/go-ethereum/p2p/nat" "github.com/ethereum/go-ethereum/p2p/netutil" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rpc" whisper "github.com/ethereum/go-ethereum/whisper/whisperv2" "gopkg.in/urfave/cli.v1" @@ -149,7 +149,7 @@ var ( } TestNetFlag = cli.BoolFlag{ Name: "testnet", - Usage: "Ropsten network: pre-configured test network", + Usage: "Ropsten network: pre-configured proof-of-work test network", } DevModeFlag = cli.BoolFlag{ Name: "dev", @@ -921,16 +921,16 @@ func MakeChain(ctx *cli.Context, stack *node.Node) (chain *core.BlockChain, chai var err error chainDb = MakeChainDatabase(ctx, stack) - seal := pow.PoW(pow.FakePow{}) + engine := ethash.NewFaker() if !ctx.GlobalBool(FakePoWFlag.Name) { - seal = pow.NewFullEthash("", 1, 0, "", 1, 0) + engine = ethash.New("", 1, 0, "", 1, 0) } config, _, err := core.SetupGenesisBlock(chainDb, MakeGenesis(ctx)) if err != nil { Fatalf("%v", err) } vmcfg := vm.Config{EnablePreimageRecording: ctx.GlobalBool(VMEnableDebugFlag.Name)} - chain, err = core.NewBlockChain(chainDb, config, seal, new(event.TypeMux), vmcfg) + chain, err = core.NewBlockChain(chainDb, config, engine, new(event.TypeMux), vmcfg) if err != nil { Fatalf("Can't create BlockChain: %v", err) } diff --git a/consensus/consensus.go b/consensus/consensus.go new file mode 100644 index 0000000000..e318e57c01 --- /dev/null +++ b/consensus/consensus.go @@ -0,0 +1,94 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +// Package consensus implements different Ethereum consensus engines. +package consensus + +import ( + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/state" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/rpc" +) + +// ChainReader defines a small collection of methods needed to access the local +// blockchain during header and/or uncle verification. +type ChainReader interface { + // Config retrieves the blockchain's chain configuration. + Config() *params.ChainConfig + + // CurrentHeader retrieves the current header from the local chain. + CurrentHeader() *types.Header + + // GetHeader retrieves a block header from the database by hash and number. + GetHeader(hash common.Hash, number uint64) *types.Header + + // GetHeaderByNumber retrieves a block header from the database by number. + GetHeaderByNumber(number uint64) *types.Header + + // GetBlock retrieves a block from the database by hash and number. + GetBlock(hash common.Hash, number uint64) *types.Block +} + +// Engine is an algorithm agnostic consensus engine. +type Engine interface { + // VerifyHeader checks whether a header conforms to the consensus rules of a + // given engine. Verifying the seal may be done optionally here, or explicitly + // via the VerifySeal method. + VerifyHeader(chain ChainReader, header *types.Header, seal bool) error + + // VerifyHeaders is similar to VerifyHeader, but verifies a batch of headers + // concurrently. The method returns a quit channel to abort the operations and + // a results channel to retrieve the async verifications (the order is that of + // the input slice). + VerifyHeaders(chain ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error) + + // VerifyUncles verifies that the given block's uncles conform to the consensus + // rules of a given engine. + VerifyUncles(chain ChainReader, block *types.Block) error + + // VerifySeal checks whether the crypto seal on a header is valid according to + // the consensus rules of the given engine. + VerifySeal(chain ChainReader, header *types.Header) error + + // Prepare initializes the consensus fields of a block header according to the + // rules of a particular engine. The changes are executed inline. + Prepare(chain ChainReader, header *types.Header) error + + // Finalize runs any post-transaction state modifications (e.g. block rewards) + // and assembles the final block. + // + // Note, the block header and state database might be updated to reflect any + // consensus rules that happen at finalization (e.g. block rewards). + Finalize(chain ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, + uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) + + // Seal generates a new block for the given input block with the local miner's + // seal place on top. + Seal(chain ChainReader, block *types.Block, stop <-chan struct{}) (*types.Block, error) + + // APIs returns the RPC APIs this consensus engine provides. + APIs(chain ChainReader) []rpc.API +} + +// PoW is a consensus engine based on proof-of-work. +type PoW interface { + Engine + + // Hashrate returns the current mining hashrate of a PoW consensus engine. + Hashrate() float64 +} diff --git a/pow/ethash_algo.go b/consensus/ethash/algorithm.go similarity index 99% rename from pow/ethash_algo.go rename to consensus/ethash/algorithm.go index 1e996785ff..7e8fbfc378 100644 --- a/pow/ethash_algo.go +++ b/consensus/ethash/algorithm.go @@ -14,7 +14,7 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -package pow +package ethash import ( "encoding/binary" diff --git a/pow/ethash_algo_go1.7.go b/consensus/ethash/algorithm_go1.7.go similarity index 99% rename from pow/ethash_algo_go1.7.go rename to consensus/ethash/algorithm_go1.7.go index ce05b3bb08..c34d041c32 100644 --- a/pow/ethash_algo_go1.7.go +++ b/consensus/ethash/algorithm_go1.7.go @@ -16,7 +16,7 @@ // +build !go1.8 -package pow +package ethash // cacheSize calculates and returns the size of the ethash verification cache that // belongs to a certain block number. The cache size grows linearly, however, we diff --git a/pow/ethash_algo_go1.8.go b/consensus/ethash/algorithm_go1.8.go similarity index 99% rename from pow/ethash_algo_go1.8.go rename to consensus/ethash/algorithm_go1.8.go index cac96cd5e9..62bf4dec1b 100644 --- a/pow/ethash_algo_go1.8.go +++ b/consensus/ethash/algorithm_go1.8.go @@ -16,7 +16,7 @@ // +build go1.8 -package pow +package ethash import "math/big" diff --git a/pow/ethash_algo_go1.8_test.go b/consensus/ethash/algorithm_go1.8_test.go similarity index 99% rename from pow/ethash_algo_go1.8_test.go rename to consensus/ethash/algorithm_go1.8_test.go index 57e0b0b7a2..fdc3023189 100644 --- a/pow/ethash_algo_go1.8_test.go +++ b/consensus/ethash/algorithm_go1.8_test.go @@ -16,7 +16,7 @@ // +build go1.8 -package pow +package ethash import "testing" diff --git a/pow/ethash_algo_test.go b/consensus/ethash/algorithm_test.go similarity index 99% rename from pow/ethash_algo_test.go rename to consensus/ethash/algorithm_test.go index 0605d70ad7..7e4307a74a 100644 --- a/pow/ethash_algo_test.go +++ b/consensus/ethash/algorithm_test.go @@ -14,7 +14,7 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -package pow +package ethash import ( "bytes" @@ -704,8 +704,8 @@ func TestConcurrentDiskCacheGeneration(t *testing.T) { go func(idx int) { defer pend.Done() - ethash := NewFullEthash(cachedir, 0, 1, "", 0, 0) - if err := ethash.Verify(block); err != nil { + ethash := New(cachedir, 0, 1, "", 0, 0) + if err := ethash.VerifySeal(nil, block.Header()); err != nil { t.Errorf("proc %d: block verification failed: %v", idx, err) } }(i) @@ -713,17 +713,6 @@ func TestConcurrentDiskCacheGeneration(t *testing.T) { pend.Wait() } -func TestTestMode(t *testing.T) { - head := &types.Header{Difficulty: big.NewInt(100)} - ethash := NewTestEthash() - nonce, mix := ethash.Search(types.NewBlockWithHeader(head), nil) - head.Nonce = types.EncodeNonce(nonce) - copy(head.MixDigest[:], mix) - if err := ethash.Verify(types.NewBlockWithHeader(head)); err != nil { - t.Error("unexpected Verify error:", err) - } -} - // Benchmarks the cache generation performance. func BenchmarkCacheGeneration(b *testing.B) { for i := 0; i < b.N; i++ { diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go new file mode 100644 index 0000000000..603be3e531 --- /dev/null +++ b/consensus/ethash/consensus.go @@ -0,0 +1,496 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethash + +import ( + "bytes" + "errors" + "fmt" + "math/big" + "runtime" + "sync/atomic" + "time" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/consensus/misc" + "github.com/ethereum/go-ethereum/core/state" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/params" + set "gopkg.in/fatih/set.v0" +) + +// Ethash proof-of-work protocol constants. +var ( + blockReward *big.Int = big.NewInt(5e+18) // Block reward in wei for successfully mining a block + maxUncles = 2 // Maximum number of uncles allowed in a single block +) + +var ( + ErrInvalidChain = errors.New("invalid header chain") + ErrParentUnknown = errors.New("parent not known locally") + ErrFutureBlock = errors.New("block in the future") + ErrLargeBlockTimestamp = errors.New("timestamp too big") + ErrZeroBlockTime = errors.New("timestamp equals parent's") + ErrInvalidNumber = errors.New("invalid block number") + ErrTooManyUncles = errors.New("too many uncles") + ErrDuplicateUncle = errors.New("duplicate uncle") + ErrUncleIsAncestor = errors.New("uncle is ancestor") + ErrDanglingUncle = errors.New("uncle's parent is not ancestor") + ErrNonceOutOfRange = errors.New("nonce out of range") + ErrInvalidDifficulty = errors.New("non-positive difficulty") + ErrInvalidMixDigest = errors.New("invalid mix digest") + ErrInvalidPoW = errors.New("invalid proof-of-work") +) + +// VerifyHeader checks whether a header conforms to the consensus rules of the +// stock Ethereum ethash engine. +func (ethash *Ethash) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error { + // If we're running a full engine faking, accept any input as valid + if ethash.fakeFull { + return nil + } + // Short circuit if the header is known, or it's parent not + number := header.Number.Uint64() + if chain.GetHeader(header.Hash(), number) != nil { + return nil + } + parent := chain.GetHeader(header.ParentHash, number-1) + if parent == nil { + return ErrParentUnknown + } + // Sanity checks passed, do a proper verification + return ethash.verifyHeader(chain, header, parent, false, seal) +} + +// VerifyHeaders is similar to VerifyHeader, but verifies a batch of headers +// concurrently. The method returns a quit channel to abort the operations and +// a results channel to retrieve the async verifications. +func (ethash *Ethash) VerifyHeaders(chain consensus.ChainReader, headers []*types.Header, seals []bool) (chan<- struct{}, <-chan error) { + // If we're running a full engine faking, accept any input as valid + if ethash.fakeFull { + abort, results := make(chan struct{}), make(chan error, len(headers)) + for i := 0; i < len(headers); i++ { + results <- nil + } + return abort, results + } + // Spawn as many workers as allowed threads + workers := runtime.GOMAXPROCS(0) + if len(headers) < workers { + workers = len(headers) + } + // Create a task channel and spawn the verifiers + type result struct { + index int + err error + } + inputs := make(chan int, workers) + outputs := make(chan result, len(headers)) + + var badblock uint64 + for i := 0; i < workers; i++ { + go func() { + for index := range inputs { + // If we've found a bad block already before this, stop validating + if bad := atomic.LoadUint64(&badblock); bad != 0 && bad <= headers[index].Number.Uint64() { + outputs <- result{index: index, err: ErrInvalidChain} + continue + } + // We need to look up the first parent + var parent *types.Header + if index == 0 { + parent = chain.GetHeader(headers[0].ParentHash, headers[0].Number.Uint64()-1) + } else if headers[index-1].Hash() == headers[index].ParentHash { + parent = headers[index-1] + } + // Ensure the validation is useful and execute it + var failure error + switch { + case chain.GetHeader(headers[index].Hash(), headers[index].Number.Uint64()-1) != nil: + outputs <- result{index: index, err: nil} + case parent == nil: + failure = ErrParentUnknown + outputs <- result{index: index, err: failure} + default: + failure = ethash.verifyHeader(chain, headers[index], parent, false, seals[index]) + outputs <- result{index: index, err: failure} + } + // If a validation failure occurred, mark subsequent blocks invalid + if failure != nil { + number := headers[index].Number.Uint64() + if prev := atomic.LoadUint64(&badblock); prev == 0 || prev > number { + // This two step atomic op isn't thread-safe in that `badblock` might end + // up slightly higher than the block number of the first failure (if many + // workers try to write at the same time), but it's fine as we're mostly + // interested to avoid large useless work, we don't care about 1-2 extra + // runs. Doing "full thread safety" would involve mutexes, which would be + // a noticeable sync overhead on the fast spinning worker routines. + atomic.StoreUint64(&badblock, number) + } + } + } + }() + } + // Feed item indices to the workers until done, sorting and feeding the results to the caller + dones := make([]bool, len(headers)) + errors := make([]error, len(headers)) + + abort := make(chan struct{}) + returns := make(chan error, len(headers)) + + go func() { + defer close(inputs) + + input, output := 0, 0 + for i := 0; i < len(headers)*2; i++ { + var res result + + // If there are tasks left, push to workers + if input < len(headers) { + select { + case inputs <- input: + input++ + continue + case <-abort: + return + case res = <-outputs: + } + } else { + // Otherwise keep waiting for results + select { + case <-abort: + return + case res = <-outputs: + } + } + // A result arrived, save and propagate if next + dones[res.index], errors[res.index] = true, res.err + for output < len(headers) && dones[output] { + returns <- errors[output] + output++ + } + } + }() + return abort, returns +} + +// VerifyUncles verifies that the given block's uncles conform to the consensus +// rules of the stock Ethereum ethash engine. +func (ethash *Ethash) VerifyUncles(chain consensus.ChainReader, block *types.Block) error { + // If we're running a full engine faking, accept any input as valid + if ethash.fakeFull { + return nil + } + // Verify that there are at most 2 uncles included in this block + if len(block.Uncles()) > maxUncles { + return ErrTooManyUncles + } + // Gather the set of past uncles and ancestors + uncles, ancestors := set.New(), make(map[common.Hash]*types.Header) + + number, parent := block.NumberU64()-1, block.ParentHash() + for i := 0; i < 7; i++ { + ancestor := chain.GetBlock(parent, number) + if ancestor == nil { + break + } + ancestors[ancestor.Hash()] = ancestor.Header() + for _, uncle := range ancestor.Uncles() { + uncles.Add(uncle.Hash()) + } + parent, number = ancestor.ParentHash(), number-1 + } + ancestors[block.Hash()] = block.Header() + uncles.Add(block.Hash()) + + // Verify each of the uncles that it's recent, but not an ancestor + for _, uncle := range block.Uncles() { + // Make sure every uncle is rewarded only once + hash := uncle.Hash() + if uncles.Has(hash) { + return ErrDuplicateUncle + } + uncles.Add(hash) + + // Make sure the uncle has a valid ancestry + if ancestors[hash] != nil { + return ErrUncleIsAncestor + } + if ancestors[uncle.ParentHash] == nil || uncle.ParentHash == block.ParentHash() { + return ErrDanglingUncle + } + if err := ethash.verifyHeader(chain, uncle, ancestors[uncle.ParentHash], true, true); err != nil { + return err + } + } + return nil +} + +// verifyHeader checks whether a header conforms to the consensus rules of the +// stock Ethereum ethash engine. +// +// See YP section 4.3.4. "Block Header Validity" +func (ethash *Ethash) verifyHeader(chain consensus.ChainReader, header, parent *types.Header, uncle bool, seal bool) error { + // Ensure that the header's extra-data section is of a reasonable size + if uint64(len(header.Extra)) > params.MaximumExtraDataSize { + return fmt.Errorf("extra-data too long: %d > %d", len(header.Extra), params.MaximumExtraDataSize) + } + // Verify the header's timestamp + if uncle { + if header.Time.Cmp(math.MaxBig256) > 0 { + return ErrLargeBlockTimestamp + } + } else { + if header.Time.Cmp(big.NewInt(time.Now().Unix())) > 0 { + return ErrFutureBlock + } + } + if header.Time.Cmp(parent.Time) <= 0 { + return ErrZeroBlockTime + } + // Verify the block's difficulty based in it's timestamp and parent's difficulty + expected := CalcDifficulty(chain.Config(), header.Time.Uint64(), parent.Time.Uint64(), parent.Number, parent.Difficulty) + if expected.Cmp(header.Difficulty) != 0 { + return fmt.Errorf("invalid difficulty: have %v, want %v", header.Difficulty, expected) + } + // Verify that the gas limit remains within allowed bounds + diff := new(big.Int).Set(parent.GasLimit) + diff = diff.Sub(diff, header.GasLimit) + diff.Abs(diff) + + limit := new(big.Int).Set(parent.GasLimit) + limit = limit.Div(limit, params.GasLimitBoundDivisor) + + if diff.Cmp(limit) >= 0 || header.GasLimit.Cmp(params.MinGasLimit) < 0 { + return fmt.Errorf("invalid gas limit: have %v, want %v += %v", header.GasLimit, parent.GasLimit, limit) + } + // Verify that the block number is parent's +1 + if diff := new(big.Int).Sub(header.Number, parent.Number); diff.Cmp(big.NewInt(1)) != 0 { + return ErrInvalidNumber + } + // Verify the engine specific seal securing the block + if seal { + if err := ethash.VerifySeal(chain, header); err != nil { + return err + } + } + // If all checks passed, validate any special fields for hard forks + if err := misc.VerifyDAOHeaderExtraData(chain.Config(), header); err != nil { + return err + } + if err := misc.VerifyForkHashes(chain.Config(), header, uncle); err != nil { + return err + } + return nil +} + +// CalcDifficulty is the difficulty adjustment algorithm. It returns the difficulty +// that a new block should have when created at time given the parent block's time +// and difficulty. +// +// TODO (karalabe): Move the chain maker into this package and make this private! +func CalcDifficulty(config *params.ChainConfig, time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int { + if config.IsHomestead(new(big.Int).Add(parentNumber, common.Big1)) { + return calcDifficultyHomestead(time, parentTime, parentNumber, parentDiff) + } + return calcDifficultyFrontier(time, parentTime, parentNumber, parentDiff) +} + +// Some weird constants to avoid constant memory allocs for them. +var ( + expDiffPeriod = big.NewInt(100000) + big10 = big.NewInt(10) + bigMinus99 = big.NewInt(-99) +) + +// calcDifficultyHomestead is the difficulty adjustment algorithm. It returns +// the difficulty that a new block should have when created at time given the +// parent block's time and difficulty. The calculation uses the Homestead rules. +func calcDifficultyHomestead(time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int { + // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-2.mediawiki + // algorithm: + // diff = (parent_diff + + // (parent_diff / 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)) + // ) + 2^(periodCount - 2) + + bigTime := new(big.Int).SetUint64(time) + bigParentTime := new(big.Int).SetUint64(parentTime) + + // holds intermediate values to make the algo easier to read & audit + x := new(big.Int) + y := new(big.Int) + + // 1 - (block_timestamp -parent_timestamp) // 10 + x.Sub(bigTime, bigParentTime) + x.Div(x, big10) + x.Sub(common.Big1, x) + + // max(1 - (block_timestamp - parent_timestamp) // 10, -99))) + if x.Cmp(bigMinus99) < 0 { + x.Set(bigMinus99) + } + // (parent_diff + parent_diff // 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)) + y.Div(parentDiff, params.DifficultyBoundDivisor) + x.Mul(y, x) + x.Add(parentDiff, x) + + // minimum difficulty can ever be (before exponential factor) + if x.Cmp(params.MinimumDifficulty) < 0 { + x.Set(params.MinimumDifficulty) + } + // for the exponential factor + periodCount := new(big.Int).Add(parentNumber, common.Big1) + periodCount.Div(periodCount, expDiffPeriod) + + // the exponential factor, commonly referred to as "the bomb" + // diff = diff + 2^(periodCount - 2) + if periodCount.Cmp(common.Big1) > 0 { + y.Sub(periodCount, common.Big2) + y.Exp(common.Big2, y, nil) + x.Add(x, y) + } + return x +} + +// calcDifficultyFrontier is the difficulty adjustment algorithm. It returns the +// difficulty that a new block should have when created at time given the parent +// block's time and difficulty. The calculation uses the Frontier rules. +func calcDifficultyFrontier(time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int { + diff := new(big.Int) + adjust := new(big.Int).Div(parentDiff, params.DifficultyBoundDivisor) + bigTime := new(big.Int) + bigParentTime := new(big.Int) + + bigTime.SetUint64(time) + bigParentTime.SetUint64(parentTime) + + if bigTime.Sub(bigTime, bigParentTime).Cmp(params.DurationLimit) < 0 { + diff.Add(parentDiff, adjust) + } else { + diff.Sub(parentDiff, adjust) + } + if diff.Cmp(params.MinimumDifficulty) < 0 { + diff.Set(params.MinimumDifficulty) + } + + periodCount := new(big.Int).Add(parentNumber, common.Big1) + periodCount.Div(periodCount, expDiffPeriod) + if periodCount.Cmp(common.Big1) > 0 { + // diff = diff + 2^(periodCount - 2) + expDiff := periodCount.Sub(periodCount, common.Big2) + expDiff.Exp(common.Big2, expDiff, nil) + diff.Add(diff, expDiff) + diff = math.BigMax(diff, params.MinimumDifficulty) + } + return diff +} + +// VerifySeal implements consensus.Engine, checking whether the given block satisfies +// the PoW difficulty requirements. +func (ethash *Ethash) VerifySeal(chain consensus.ChainReader, header *types.Header) error { + // If we're running a fake PoW, accept any seal as valid + if ethash.fakeMode { + time.Sleep(ethash.fakeDelay) + if ethash.fakeFail == header.Number.Uint64() { + return ErrInvalidPoW + } + return nil + } + // If we're running a shared PoW, delegate verification to it + if ethash.shared != nil { + return ethash.shared.VerifySeal(chain, header) + } + // Sanity check that the block number is below the lookup table size (60M blocks) + number := header.Number.Uint64() + if number/epochLength >= uint64(len(cacheSizes)) { + // Go < 1.7 cannot calculate new cache/dataset sizes (no fast prime check) + return ErrNonceOutOfRange + } + // Ensure that we have a valid difficulty for the block + if header.Difficulty.Sign() <= 0 { + return ErrInvalidDifficulty + } + // Recompute the digest and PoW value and verify against the header + cache := ethash.cache(number) + + size := datasetSize(number) + if ethash.tester { + size = 32 * 1024 + } + digest, result := hashimotoLight(size, cache, header.HashNoNonce().Bytes(), header.Nonce.Uint64()) + if !bytes.Equal(header.MixDigest[:], digest) { + return ErrInvalidMixDigest + } + target := new(big.Int).Div(maxUint256, header.Difficulty) + if new(big.Int).SetBytes(result).Cmp(target) > 0 { + return ErrInvalidPoW + } + return nil +} + +// Prepare implements consensus.Engine, initializing the difficulty field of a +// header to conform to the ethash protocol. The changes are done inline. +func (ethash *Ethash) Prepare(chain consensus.ChainReader, header *types.Header) error { + parent := chain.GetHeader(header.ParentHash, header.Number.Uint64()-1) + if parent == nil { + return ErrParentUnknown + } + header.Difficulty = CalcDifficulty(chain.Config(), header.Time.Uint64(), + parent.Time.Uint64(), parent.Number, parent.Difficulty) + + return nil +} + +// Finalize implements consensus.Engine, accumulating the block and uncle rewards, +// setting the final state and assembling the block. +func (ethash *Ethash) Finalize(chain consensus.ChainReader, header *types.Header, state *state.StateDB, txs []*types.Transaction, uncles []*types.Header, receipts []*types.Receipt) (*types.Block, error) { + // Accumulate any block and uncle rewards and commit the final state root + AccumulateRewards(state, header, uncles) + header.Root = state.IntermediateRoot(chain.Config().IsEIP158(header.Number)) + + // Header seems complete, assemble into a block and return + return types.NewBlock(header, txs, uncles, receipts), nil +} + +// Some weird constants to avoid constant memory allocs for them. +var ( + big8 = big.NewInt(8) + big32 = big.NewInt(32) +) + +// AccumulateRewards credits the coinbase of the given block with the mining +// reward. The total reward consists of the static block reward and rewards for +// included uncles. The coinbase of each uncle block is also rewarded. +// +// TODO (karalabe): Move the chain maker into this package and make this private! +func AccumulateRewards(state *state.StateDB, header *types.Header, uncles []*types.Header) { + reward := new(big.Int).Set(blockReward) + r := new(big.Int) + for _, uncle := range uncles { + r.Add(uncle.Number, big8) + r.Sub(r, header.Number) + r.Mul(r, blockReward) + r.Div(r, big8) + state.AddBalance(uncle.Coinbase, r) + + r.Div(blockReward, big32) + reward.Add(reward, r) + } + state.AddBalance(header.Coinbase, reward) +} diff --git a/consensus/ethash/consensus_test.go b/consensus/ethash/consensus_test.go new file mode 100644 index 0000000000..683c10be49 --- /dev/null +++ b/consensus/ethash/consensus_test.go @@ -0,0 +1,79 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethash + +import ( + "encoding/json" + "math/big" + "os" + "testing" + + "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/params" +) + +type diffTest struct { + ParentTimestamp uint64 + ParentDifficulty *big.Int + CurrentTimestamp uint64 + CurrentBlocknumber *big.Int + CurrentDifficulty *big.Int +} + +func (d *diffTest) UnmarshalJSON(b []byte) (err error) { + var ext struct { + ParentTimestamp string + ParentDifficulty string + CurrentTimestamp string + CurrentBlocknumber string + CurrentDifficulty string + } + if err := json.Unmarshal(b, &ext); err != nil { + return err + } + + d.ParentTimestamp = math.MustParseUint64(ext.ParentTimestamp) + d.ParentDifficulty = math.MustParseBig256(ext.ParentDifficulty) + d.CurrentTimestamp = math.MustParseUint64(ext.CurrentTimestamp) + d.CurrentBlocknumber = math.MustParseBig256(ext.CurrentBlocknumber) + d.CurrentDifficulty = math.MustParseBig256(ext.CurrentDifficulty) + + return nil +} + +func TestCalcDifficulty(t *testing.T) { + file, err := os.Open("../../tests/files/BasicTests/difficulty.json") + if err != nil { + t.Fatal(err) + } + defer file.Close() + + tests := make(map[string]diffTest) + err = json.NewDecoder(file).Decode(&tests) + if err != nil { + t.Fatal(err) + } + + config := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(1150000)} + for name, test := range tests { + number := new(big.Int).Sub(test.CurrentBlocknumber, big.NewInt(1)) + diff := CalcDifficulty(config, test.CurrentTimestamp, test.ParentTimestamp, number, test.ParentDifficulty) + if diff.Cmp(test.CurrentDifficulty) != 0 { + t.Error(name, "failed. Expected", test.CurrentDifficulty, "and calculated", diff) + } + } +} diff --git a/pow/ethash.go b/consensus/ethash/ethash.go similarity index 80% rename from pow/ethash.go rename to consensus/ethash/ethash.go index 9adc38540d..aa5b2d8a02 100644 --- a/pow/ethash.go +++ b/consensus/ethash/ethash.go @@ -14,10 +14,10 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -package pow +// Package ethash implements the ethash proof-of-work consensus engine. +package ethash import ( - "bytes" "errors" "fmt" "math" @@ -32,24 +32,20 @@ import ( "unsafe" mmap "github.com/edsrzf/mmap-go" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/rpc" metrics "github.com/rcrowley/go-metrics" ) -var ( - ErrInvalidDumpMagic = errors.New("invalid dump magic") - ErrNonceOutOfRange = errors.New("nonce out of range") - ErrInvalidDifficulty = errors.New("non-positive difficulty") - ErrInvalidMixDigest = errors.New("invalid mix digest") - ErrInvalidPoW = errors.New("pow difficulty invalid") -) +var ErrInvalidDumpMagic = errors.New("invalid dump magic") var ( // maxUint256 is a big integer representing 2^256-1 maxUint256 = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0)) // sharedEthash is a full instance that can be shared between multiple users. - sharedEthash = NewFullEthash("", 3, 0, "", 1, 0) + sharedEthash = New("", 3, 0, "", 1, 0) // algorithmRevision is the data structure version used for file naming. algorithmRevision = 23 @@ -321,7 +317,8 @@ func MakeDataset(block uint64, dir string) { d.release() } -// Ethash is a PoW data struture implementing the ethash algorithm. +// Ethash is a consensus engine based on proot-of-work implementing the ethash +// algorithm. type Ethash struct { cachedir string // Data directory to store the verification caches cachesinmem int // Number of caches to keep in memory @@ -334,15 +331,26 @@ type Ethash struct { fcache *cache // Pre-generated cache for the estimated future epoch datasets map[uint64]*dataset // In memory datasets to avoid regenerating too often fdataset *dataset // Pre-generated dataset for the estimated future epoch - lock sync.Mutex // Ensures thread safety for the in-memory caches + // Mining related fields + rand *rand.Rand // Properly seeded random source for nonces + threads int // Number of threads to mine on if mining + update chan struct{} // Notification channel to update mining parameters hashrate metrics.Meter // Meter tracking the average hashrate - tester bool // Flag whether to use a smaller test dataset + // The fields below are hooks for testing + tester bool // Flag whether to use a smaller test dataset + shared *Ethash // Shared PoW verifier to avoid cache regeneration + fakeMode bool // Flag whether to disable PoW checking + fakeFull bool // Flag whether to disable all consensus rules + fakeFail uint64 // Block number which fails PoW check even in fake mode + fakeDelay time.Duration // Time delay to sleep for before returning from verify + + lock sync.Mutex // Ensures thread safety for the in-memory caches and mining fields } -// NewFullEthash creates a full sized ethash PoW scheme. -func NewFullEthash(cachedir string, cachesinmem, cachesondisk int, dagdir string, dagsinmem, dagsondisk int) PoW { +// New creates a full sized ethash PoW scheme. +func New(cachedir string, cachesinmem, cachesondisk int, dagdir string, dagsinmem, dagsondisk int) *Ethash { if cachesinmem <= 0 { log.Warn("One ethash cache must alwast be in memory", "requested", cachesinmem) cachesinmem = 1 @@ -362,58 +370,55 @@ func NewFullEthash(cachedir string, cachesinmem, cachesondisk int, dagdir string dagsondisk: dagsondisk, caches: make(map[uint64]*cache), datasets: make(map[uint64]*dataset), + update: make(chan struct{}), hashrate: metrics.NewMeter(), } } -// NewTestEthash creates a small sized ethash PoW scheme useful only for testing +// NewTester creates a small sized ethash PoW scheme useful only for testing // purposes. -func NewTestEthash() PoW { +func NewTester() *Ethash { return &Ethash{ cachesinmem: 1, caches: make(map[uint64]*cache), datasets: make(map[uint64]*dataset), tester: true, + update: make(chan struct{}), hashrate: metrics.NewMeter(), } } -// NewSharedEthash creates a full sized ethash PoW shared between all requesters -// running in the same process. -func NewSharedEthash() PoW { - return sharedEthash +// NewFaker creates a ethash consensus engine with a fake PoW scheme that accepts +// all blocks' seal as valid, though they still have to conform to the Ethereum +// consensus rules. +func NewFaker() *Ethash { + return &Ethash{fakeMode: true} } -// Verify implements PoW, checking whether the given block satisfies the PoW -// difficulty requirements. -func (ethash *Ethash) Verify(block Block) error { - // Sanity check that the block number is below the lookup table size (60M blocks) - number := block.NumberU64() - if number/epochLength >= uint64(len(cacheSizes)) { - // Go < 1.7 cannot calculate new cache/dataset sizes (no fast prime check) - return ErrNonceOutOfRange - } - // Ensure that we have a valid difficulty for the block - difficulty := block.Difficulty() - if difficulty.Sign() <= 0 { - return ErrInvalidDifficulty - } - // Recompute the digest and PoW value and verify against the block - cache := ethash.cache(number) +// NewFakeFailer creates a ethash consensus engine with a fake PoW scheme that +// accepts all blocks as valid apart from the single one specified, though they +// still have to conform to the Ethereum consensus rules. +func NewFakeFailer(fail uint64) *Ethash { + return &Ethash{fakeMode: true, fakeFail: fail} +} - size := datasetSize(number) - if ethash.tester { - size = 32 * 1024 - } - digest, result := hashimotoLight(size, cache, block.HashNoNonce().Bytes(), block.Nonce()) - if !bytes.Equal(block.MixDigest().Bytes(), digest) { - return ErrInvalidMixDigest - } - target := new(big.Int).Div(maxUint256, difficulty) - if new(big.Int).SetBytes(result).Cmp(target) > 0 { - return ErrInvalidPoW - } - return nil +// NewFakeDelayer creates a ethash consensus engine with a fake PoW scheme that +// accepts all blocks as valid, but delays verifications by some time, though +// they still have to conform to the Ethereum consensus rules. +func NewFakeDelayer(delay time.Duration) *Ethash { + return &Ethash{fakeMode: true, fakeDelay: delay} +} + +// NewFullFaker creates a ethash consensus engine with a full fake scheme that +// accepts all blocks as valid, without checking any consensus rules whatsoever. +func NewFullFaker() *Ethash { + return &Ethash{fakeMode: true, fakeFull: true} +} + +// NewShared creates a full sized ethash PoW shared between all requesters running +// in the same process. +func NewShared() *Ethash { + return &Ethash{shared: sharedEthash} } // cache tries to retrieve a verification cache for the specified block number @@ -477,43 +482,6 @@ func (ethash *Ethash) cache(block uint64) []uint32 { return current.cache } -// Search implements PoW, attempting to find a nonce that satisfies the block's -// difficulty requirements. -func (ethash *Ethash) Search(block Block, stop <-chan struct{}) (uint64, []byte) { - var ( - hash = block.HashNoNonce().Bytes() - diff = block.Difficulty() - target = new(big.Int).Div(maxUint256, diff) - dataset = ethash.dataset(block.NumberU64()) - rand = rand.New(rand.NewSource(time.Now().UnixNano())) - nonce = uint64(rand.Int63()) - attempts int64 - ) - // Start generating random nonces until we abort or find a good one - for { - select { - case <-stop: - // Mining terminated, update stats and abort - ethash.hashrate.Mark(attempts) - return 0, nil - - default: - // We don't have to update hash rate on every nonce, so update after after 2^X nonces - attempts++ - if (attempts % (1 << 15)) == 0 { - ethash.hashrate.Mark(attempts) - attempts = 0 - } - // Compute the PoW value of this nonce - digest, result := hashimotoFull(dataset, hash, nonce) - if new(big.Int).SetBytes(result).Cmp(target) <= 0 { - return nonce, digest - } - nonce++ - } - } -} - // dataset tries to retrieve a mining dataset for the specified block number // by first checking against a list of in-memory datasets, then against DAGs // stored on disk, and finally generating one if none can be found. @@ -576,14 +544,44 @@ func (ethash *Ethash) dataset(block uint64) []uint32 { return current.dataset } +// Threads returns the number of mining threads currently enabled. This doesn't +// necessarily mean that mining is running! +func (ethash *Ethash) Threads() int { + ethash.lock.Lock() + defer ethash.lock.Unlock() + + return ethash.threads +} + +// SetThreads updates the number of mining threads currently enabled. Calling +// this method does not start mining, only sets the thread count. If zero is +// specified, the miner will use all cores of the machine. +func (ethash *Ethash) SetThreads(threads int) { + ethash.lock.Lock() + defer ethash.lock.Unlock() + + // Update the threads and ping any running seal to pull in any changes + ethash.threads = threads + select { + case ethash.update <- struct{}{}: + default: + } +} + // Hashrate implements PoW, returning the measured rate of the search invocations // per second over the last minute. func (ethash *Ethash) Hashrate() float64 { return ethash.hashrate.Rate1() } -// EthashSeedHash is the seed to use for generating a vrification cache and the -// mining dataset. -func EthashSeedHash(block uint64) []byte { +// APIs implements consensus.Engine, returning the user facing RPC APIs. Currently +// that is empty. +func (ethash *Ethash) APIs(chain consensus.ChainReader) []rpc.API { + return nil +} + +// SeedHash is the seed to use for generating a verification cache and the mining +// dataset. +func SeedHash(block uint64) []byte { return seedHash(block) } diff --git a/consensus/ethash/ethash_test.go b/consensus/ethash/ethash_test.go new file mode 100644 index 0000000000..b3a2f32f70 --- /dev/null +++ b/consensus/ethash/ethash_test.go @@ -0,0 +1,40 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethash + +import ( + "math/big" + "testing" + + "github.com/ethereum/go-ethereum/core/types" +) + +// Tests that ethash works correctly in test mode. +func TestTestMode(t *testing.T) { + head := &types.Header{Number: big.NewInt(1), Difficulty: big.NewInt(100)} + + ethash := NewTester() + block, err := ethash.Seal(nil, types.NewBlockWithHeader(head), nil) + if err != nil { + t.Fatalf("failed to seal block: %v", err) + } + head.Nonce = types.EncodeNonce(block.Nonce()) + head.MixDigest = block.MixDigest() + if err := ethash.VerifySeal(nil, head); err != nil { + t.Fatalf("unexpected verification error: %v", err) + } +} diff --git a/consensus/ethash/sealer.go b/consensus/ethash/sealer.go new file mode 100644 index 0000000000..9a000ed316 --- /dev/null +++ b/consensus/ethash/sealer.go @@ -0,0 +1,146 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package ethash + +import ( + crand "crypto/rand" + "math" + "math/big" + "math/rand" + "runtime" + "sync" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/log" +) + +// Seal implements consensus.Engine, attempting to find a nonce that satisfies +// the block's difficulty requirements. +func (ethash *Ethash) Seal(chain consensus.ChainReader, block *types.Block, stop <-chan struct{}) (*types.Block, error) { + // If we're running a fake PoW, simply return a 0 nonce immediately + if ethash.fakeMode { + header := block.Header() + header.Nonce, header.MixDigest = types.BlockNonce{}, common.Hash{} + return block.WithSeal(header), nil + } + // If we're running a shared PoW, delegate sealing to it + if ethash.shared != nil { + return ethash.shared.Seal(chain, block, stop) + } + // Create a runner and the multiple search threads it directs + abort := make(chan struct{}) + found := make(chan *types.Block) + + ethash.lock.Lock() + threads := ethash.threads + if ethash.rand == nil { + seed, err := crand.Int(crand.Reader, big.NewInt(math.MaxInt64)) + if err != nil { + ethash.lock.Unlock() + return nil, err + } + ethash.rand = rand.New(rand.NewSource(seed.Int64())) + } + ethash.lock.Unlock() + if threads == 0 { + threads = runtime.NumCPU() + } + var pend sync.WaitGroup + for i := 0; i < threads; i++ { + pend.Add(1) + go func(id int, nonce uint64) { + defer pend.Done() + ethash.mine(block, id, nonce, abort, found) + }(i, uint64(ethash.rand.Int63())) + } + // Wait until sealing is terminated or a nonce is found + var result *types.Block + select { + case <-stop: + // Outside abort, stop all miner threads + close(abort) + case result = <-found: + // One of the threads found a block, abort all others + close(abort) + case <-ethash.update: + // Thread count was changed on user request, restart + close(abort) + pend.Wait() + return ethash.Seal(chain, block, stop) + } + // Wait for all miners to terminate and return the block + pend.Wait() + return result, nil +} + +// mine is the actual proof-of-work miner that searches for a nonce starting from +// seed that results in correct final block difficulty. +func (ethash *Ethash) mine(block *types.Block, id int, seed uint64, abort chan struct{}, found chan *types.Block) { + // Extract some data from the header + var ( + header = block.Header() + hash = header.HashNoNonce().Bytes() + target = new(big.Int).Div(maxUint256, header.Difficulty) + + number = header.Number.Uint64() + dataset = ethash.dataset(number) + ) + // Start generating random nonces until we abort or find a good one + var ( + attempts = int64(0) + nonce = seed + ) + logger := log.New("miner", id) + logger.Trace("Started ethash search for new nonces", "seed", seed) + for { + select { + case <-abort: + // Mining terminated, update stats and abort + logger.Trace("Ethash nonce search aborted", "attempts", nonce-seed) + ethash.hashrate.Mark(attempts) + return + + default: + // We don't have to update hash rate on every nonce, so update after after 2^X nonces + attempts++ + if (attempts % (1 << 15)) == 0 { + ethash.hashrate.Mark(attempts) + attempts = 0 + } + // Compute the PoW value of this nonce + digest, result := hashimotoFull(dataset, hash, nonce) + if new(big.Int).SetBytes(result).Cmp(target) <= 0 { + // Correct nonce found, create a new header with it + header = types.CopyHeader(header) + header.Nonce = types.EncodeNonce(nonce) + header.MixDigest = common.BytesToHash(digest) + + // Seal and return a block (if still needed) + select { + case found <- block.WithSeal(header): + logger.Trace("Ethash nonce found and reported", "attempts", nonce-seed, "nonce", nonce) + case <-abort: + logger.Trace("Ethash nonce found but discarded", "attempts", nonce-seed, "nonce", nonce) + } + return + } + nonce++ + } + } +} diff --git a/pow/xor.go b/consensus/ethash/xor.go similarity index 99% rename from pow/xor.go rename to consensus/ethash/xor.go index 558aeb4690..90e2327466 100644 --- a/pow/xor.go +++ b/consensus/ethash/xor.go @@ -4,7 +4,7 @@ // Source: https://golang.org/src/crypto/cipher/xor.go -package pow +package ethash import ( "runtime" diff --git a/consensus/misc/dao.go b/consensus/misc/dao.go new file mode 100644 index 0000000000..67d4adb445 --- /dev/null +++ b/consensus/misc/dao.go @@ -0,0 +1,85 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package misc + +import ( + "bytes" + "errors" + "math/big" + + "github.com/ethereum/go-ethereum/core/state" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/params" +) + +var ( + // ErrBadProDAOExtra is returned if a header doens't support the DAO fork on a + // pro-fork client. + ErrBadProDAOExtra = errors.New("bad DAO pro-fork extra-data") + + // ErrBadNoDAOExtra is returned if a header does support the DAO fork on a no- + // fork client. + ErrBadNoDAOExtra = errors.New("bad DAO no-fork extra-data") +) + +// VerifyDAOHeaderExtraData validates the extra-data field of a block header to +// ensure it conforms to DAO hard-fork rules. +// +// DAO hard-fork extension to the header validity: +// a) if the node is no-fork, do not accept blocks in the [fork, fork+10) range +// with the fork specific extra-data set +// b) if the node is pro-fork, require blocks in the specific range to have the +// unique extra-data set. +func VerifyDAOHeaderExtraData(config *params.ChainConfig, header *types.Header) error { + // Short circuit validation if the node doesn't care about the DAO fork + if config.DAOForkBlock == nil { + return nil + } + // Make sure the block is within the fork's modified extra-data range + limit := new(big.Int).Add(config.DAOForkBlock, params.DAOForkExtraRange) + if header.Number.Cmp(config.DAOForkBlock) < 0 || header.Number.Cmp(limit) >= 0 { + return nil + } + // Depending whether we support or oppose the fork, validate the extra-data contents + if config.DAOForkSupport { + if !bytes.Equal(header.Extra, params.DAOForkBlockExtra) { + return ErrBadProDAOExtra + } + } else { + if bytes.Equal(header.Extra, params.DAOForkBlockExtra) { + return ErrBadNoDAOExtra + } + } + // All ok, header has the same extra-data we expect + return nil +} + +// ApplyDAOHardFork modifies the state database according to the DAO hard-fork +// rules, transferring all balances of a set of DAO accounts to a single refund +// contract. +func ApplyDAOHardFork(statedb *state.StateDB) { + // Retrieve the contract to refund balances into + if !statedb.Exist(params.DAORefundContract) { + statedb.CreateAccount(params.DAORefundContract) + } + + // Move every DAO account and extra-balance account funds into the refund contract + for _, addr := range params.DAODrainList() { + statedb.AddBalance(params.DAORefundContract, statedb.GetBalance(addr)) + statedb.SetBalance(addr, new(big.Int)) + } +} diff --git a/consensus/misc/forks.go b/consensus/misc/forks.go new file mode 100644 index 0000000000..4a5e7c37e0 --- /dev/null +++ b/consensus/misc/forks.go @@ -0,0 +1,43 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package misc + +import ( + "fmt" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/params" +) + +// VerifyForkHashes verifies that blocks conforming to network hard-forks do have +// the correct hashes, to avoid clients going off on different chains. This is an +// optional feature. +func VerifyForkHashes(config *params.ChainConfig, header *types.Header, uncle bool) error { + // We don't care about uncles + if uncle { + return nil + } + // If the homestead reprice hash is set, validate it + if config.EIP150Block != nil && config.EIP150Block.Cmp(header.Number) == 0 { + if config.EIP150Hash != (common.Hash{}) && config.EIP150Hash != header.Hash() { + return fmt.Errorf("homestead gas reprice fork: have 0x%x, want 0x%x", header.Hash(), config.EIP150Hash) + } + } + // All ok, return + return nil +} diff --git a/core/bench_test.go b/core/bench_test.go index a154ccbb12..20676fc976 100644 --- a/core/bench_test.go +++ b/core/bench_test.go @@ -25,13 +25,13 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) func BenchmarkInsertChain_empty_memdb(b *testing.B) { @@ -176,7 +176,7 @@ func benchInsertChain(b *testing.B, disk bool, gen func(int, *BlockGen)) { // Time the insertion of the new chain. // State and blocks are stored in the same DB. evmux := new(event.TypeMux) - chainman, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) + chainman, _ := NewBlockChain(db, gspec.Config, ethash.NewFaker(), evmux, vm.Config{}) defer chainman.Stop() b.ReportAllocs() b.ResetTimer() @@ -286,7 +286,7 @@ func benchReadChain(b *testing.B, full bool, count uint64) { if err != nil { b.Fatalf("error opening database at %v: %v", dir, err) } - chain, err := NewBlockChain(db, params.TestChainConfig, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + chain, err := NewBlockChain(db, params.TestChainConfig, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) if err != nil { b.Fatalf("error creating chain: %v", err) } diff --git a/core/block_validator.go b/core/block_validator.go index f93a9f40ba..00457dd7ab 100644 --- a/core/block_validator.go +++ b/core/block_validator.go @@ -19,22 +19,12 @@ package core import ( "fmt" "math/big" - "time" - "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" - "gopkg.in/fatih/set.v0" -) - -var ( - ExpDiffPeriod = big.NewInt(100000) - big10 = big.NewInt(10) - bigMinus99 = big.NewInt(-99) ) // BlockValidator is responsible for validating block headers, uncles and @@ -44,30 +34,24 @@ var ( type BlockValidator struct { config *params.ChainConfig // Chain configuration options bc *BlockChain // Canonical block chain - Pow pow.PoW // Proof of work used for validating + engine consensus.Engine // Consensus engine used for validating } // NewBlockValidator returns a new block validator which is safe for re-use -func NewBlockValidator(config *params.ChainConfig, blockchain *BlockChain, pow pow.PoW) *BlockValidator { +func NewBlockValidator(config *params.ChainConfig, blockchain *BlockChain, engine consensus.Engine) *BlockValidator { validator := &BlockValidator{ config: config, - Pow: pow, + engine: engine, bc: blockchain, } return validator } -// ValidateBlock validates the given block's header and uncles and verifies the -// the block header's transaction and uncle roots. -// -// ValidateBlock does not validate the header's pow. The pow work validated -// separately so we can process them in parallel. -// -// ValidateBlock also validates and makes sure that any previous state (or present) -// state that might or might not be present is checked to make sure that fast -// sync has done it's job proper. This prevents the block validator from accepting -// false positives where a header is present but the state is not. -func (v *BlockValidator) ValidateBlock(block *types.Block) error { +// ValidateBody validates the given block's uncles and verifies the the block +// header's transaction and uncle roots. The headers are assumed to be already +// validated at this point. +func (v *BlockValidator) ValidateBody(block *types.Block) error { + // Check whether the block's known, and if not, that it's linkable if v.bc.HasBlock(block.Hash()) { if _, err := state.New(block.Root(), v.bc.chainDb); err == nil { return &KnownBlockError{block.Number(), block.Hash()} @@ -80,30 +64,17 @@ func (v *BlockValidator) ValidateBlock(block *types.Block) error { if _, err := state.New(parent.Root(), v.bc.chainDb); err != nil { return ParentError(block.ParentHash()) } - + // Header validity is known at this point, check the uncles and transactions header := block.Header() - // validate the block header - if err := ValidateHeader(v.config, v.Pow, header, parent.Header(), false, false); err != nil { + if err := v.engine.VerifyUncles(v.bc, block); err != nil { return err } - // verify the uncles are correctly rewarded - if err := v.VerifyUncles(block, parent); err != nil { - return err + if hash := types.CalcUncleHash(block.Uncles()); hash != header.UncleHash { + return fmt.Errorf("uncle root hash mismatch: have %x, want %x", hash, header.UncleHash) } - - // Verify UncleHash before running other uncle validations - unclesSha := types.CalcUncleHash(block.Uncles()) - if unclesSha != header.UncleHash { - return fmt.Errorf("invalid uncles root hash (remote: %x local: %x)", header.UncleHash, unclesSha) + if hash := types.DeriveSha(block.Transactions()); hash != header.TxHash { + return fmt.Errorf("transaction root hash mismatch: have %x, want %x", hash, header.TxHash) } - - // The transactions Trie's root (R = (Tr [[i, RLP(T1)], [i, RLP(T2)], ... [n, RLP(Tn)]])) - // can be used by light clients to make sure they've received the correct Txs - txSha := types.DeriveSha(block.Transactions()) - if txSha != header.TxHash { - return fmt.Errorf("invalid transaction root hash (remote: %x local: %x)", header.TxHash, txSha) - } - return nil } @@ -135,222 +106,6 @@ func (v *BlockValidator) ValidateState(block, parent *types.Block, statedb *stat return nil } -// VerifyUncles verifies the given block's uncles and applies the Ethereum -// consensus rules to the various block headers included; it will return an -// error if any of the included uncle headers were invalid. It returns an error -// if the validation failed. -func (v *BlockValidator) VerifyUncles(block, parent *types.Block) error { - // validate that there are at most 2 uncles included in this block - if len(block.Uncles()) > 2 { - return ValidationError("Block can only contain maximum 2 uncles (contained %v)", len(block.Uncles())) - } - - uncles := set.New() - ancestors := make(map[common.Hash]*types.Block) - for _, ancestor := range v.bc.GetBlocksFromHash(block.ParentHash(), 7) { - ancestors[ancestor.Hash()] = ancestor - // Include ancestors uncles in the uncle set. Uncles must be unique. - for _, uncle := range ancestor.Uncles() { - uncles.Add(uncle.Hash()) - } - } - ancestors[block.Hash()] = block - uncles.Add(block.Hash()) - - for i, uncle := range block.Uncles() { - hash := uncle.Hash() - if uncles.Has(hash) { - // Error not unique - return UncleError("uncle[%d](%x) not unique", i, hash[:4]) - } - uncles.Add(hash) - - if ancestors[hash] != nil { - branch := fmt.Sprintf(" O - %x\n |\n", block.Hash()) - for h := range ancestors { - branch += fmt.Sprintf(" O - %x\n |\n", h) - } - log.Warn(branch) - return UncleError("uncle[%d](%x) is ancestor", i, hash[:4]) - } - - if ancestors[uncle.ParentHash] == nil || uncle.ParentHash == parent.Hash() { - return UncleError("uncle[%d](%x)'s parent is not ancestor (%x)", i, hash[:4], uncle.ParentHash[0:4]) - } - - if err := ValidateHeader(v.config, v.Pow, uncle, ancestors[uncle.ParentHash].Header(), true, true); err != nil { - return ValidationError(fmt.Sprintf("uncle[%d](%x) header invalid: %v", i, hash[:4], err)) - } - } - - return nil -} - -// ValidateHeader validates the given header and, depending on the pow arg, -// checks the proof of work of the given header. Returns an error if the -// validation failed. -func (v *BlockValidator) ValidateHeader(header, parent *types.Header, checkPow bool) error { - // Short circuit if the parent is missing. - if parent == nil { - return ParentError(header.ParentHash) - } - // Short circuit if the header's already known or its parent is missing - if v.bc.HasHeader(header.Hash()) { - return nil - } - return ValidateHeader(v.config, v.Pow, header, parent, checkPow, false) -} - -// Validates a header. Returns an error if the header is invalid. -// -// See YP section 4.3.4. "Block Header Validity" -func ValidateHeader(config *params.ChainConfig, pow pow.PoW, header *types.Header, parent *types.Header, checkPow, uncle bool) error { - if uint64(len(header.Extra)) > params.MaximumExtraDataSize { - return fmt.Errorf("Header extra data too long (%d)", len(header.Extra)) - } - - if uncle { - if header.Time.Cmp(math.MaxBig256) == 1 { - return BlockTSTooBigErr - } - } else { - if header.Time.Cmp(big.NewInt(time.Now().Unix())) == 1 { - return BlockFutureErr - } - } - if header.Time.Cmp(parent.Time) != 1 { - return BlockEqualTSErr - } - - expd := CalcDifficulty(config, header.Time.Uint64(), parent.Time.Uint64(), parent.Number, parent.Difficulty) - if expd.Cmp(header.Difficulty) != 0 { - return fmt.Errorf("Difficulty check failed for header (remote: %v local: %v)", header.Difficulty, expd) - } - - a := new(big.Int).Set(parent.GasLimit) - a = a.Sub(a, header.GasLimit) - a.Abs(a) - b := new(big.Int).Set(parent.GasLimit) - b = b.Div(b, params.GasLimitBoundDivisor) - if !(a.Cmp(b) < 0) || (header.GasLimit.Cmp(params.MinGasLimit) == -1) { - return fmt.Errorf("GasLimit check failed for header (remote: %v local_max: %v)", header.GasLimit, b) - } - - num := new(big.Int).Set(parent.Number) - num.Sub(header.Number, num) - if num.Cmp(big.NewInt(1)) != 0 { - return BlockNumberErr - } - - if checkPow { - // Verify the nonce of the header. Return an error if it's not valid - if err := pow.Verify(types.NewBlockWithHeader(header)); err != nil { - return &BlockNonceErr{header.Number, header.Hash(), header.Nonce.Uint64()} - } - } - // If all checks passed, validate the extra-data field for hard forks - if err := ValidateDAOHeaderExtraData(config, header); err != nil { - return err - } - if !uncle && config.EIP150Block != nil && config.EIP150Block.Cmp(header.Number) == 0 { - if config.EIP150Hash != (common.Hash{}) && config.EIP150Hash != header.Hash() { - return ValidationError("Homestead gas reprice fork hash mismatch: have 0x%x, want 0x%x", header.Hash(), config.EIP150Hash) - } - } - return nil -} - -// CalcDifficulty is the difficulty adjustment algorithm. It returns -// the difficulty that a new block should have when created at time -// given the parent block's time and difficulty. -func CalcDifficulty(config *params.ChainConfig, time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int { - if config.IsHomestead(new(big.Int).Add(parentNumber, common.Big1)) { - return calcDifficultyHomestead(time, parentTime, parentNumber, parentDiff) - } else { - return calcDifficultyFrontier(time, parentTime, parentNumber, parentDiff) - } -} - -func calcDifficultyHomestead(time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int { - // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-2.mediawiki - // algorithm: - // diff = (parent_diff + - // (parent_diff / 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)) - // ) + 2^(periodCount - 2) - - bigTime := new(big.Int).SetUint64(time) - bigParentTime := new(big.Int).SetUint64(parentTime) - - // holds intermediate values to make the algo easier to read & audit - x := new(big.Int) - y := new(big.Int) - - // 1 - (block_timestamp -parent_timestamp) // 10 - x.Sub(bigTime, bigParentTime) - x.Div(x, big10) - x.Sub(common.Big1, x) - - // max(1 - (block_timestamp - parent_timestamp) // 10, -99))) - if x.Cmp(bigMinus99) < 0 { - x.Set(bigMinus99) - } - - // (parent_diff + parent_diff // 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)) - y.Div(parentDiff, params.DifficultyBoundDivisor) - x.Mul(y, x) - x.Add(parentDiff, x) - - // minimum difficulty can ever be (before exponential factor) - if x.Cmp(params.MinimumDifficulty) < 0 { - x.Set(params.MinimumDifficulty) - } - - // for the exponential factor - periodCount := new(big.Int).Add(parentNumber, common.Big1) - periodCount.Div(periodCount, ExpDiffPeriod) - - // the exponential factor, commonly referred to as "the bomb" - // diff = diff + 2^(periodCount - 2) - if periodCount.Cmp(common.Big1) > 0 { - y.Sub(periodCount, common.Big2) - y.Exp(common.Big2, y, nil) - x.Add(x, y) - } - - return x -} - -func calcDifficultyFrontier(time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int { - diff := new(big.Int) - adjust := new(big.Int).Div(parentDiff, params.DifficultyBoundDivisor) - bigTime := new(big.Int) - bigParentTime := new(big.Int) - - bigTime.SetUint64(time) - bigParentTime.SetUint64(parentTime) - - if bigTime.Sub(bigTime, bigParentTime).Cmp(params.DurationLimit) < 0 { - diff.Add(parentDiff, adjust) - } else { - diff.Sub(parentDiff, adjust) - } - if diff.Cmp(params.MinimumDifficulty) < 0 { - diff.Set(params.MinimumDifficulty) - } - - periodCount := new(big.Int).Add(parentNumber, common.Big1) - periodCount.Div(periodCount, ExpDiffPeriod) - if periodCount.Cmp(common.Big1) > 0 { - // diff = diff + 2^(periodCount - 2) - expDiff := periodCount.Sub(periodCount, common.Big2) - expDiff.Exp(common.Big2, expDiff, nil) - diff.Add(diff, expDiff) - diff = math.BigMax(diff, params.MinimumDifficulty) - } - - return diff -} - // CalcGasLimit computes the gas limit of the next block after parent. // The result may be modified by the caller. // This is miner strategy, not consensus protocol. diff --git a/core/block_validator_test.go b/core/block_validator_test.go index a07dd9e51b..abe1766b4f 100644 --- a/core/block_validator_test.go +++ b/core/block_validator_test.go @@ -17,64 +17,179 @@ package core import ( - "math/big" + "runtime" "testing" + "time" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/state" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" + "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) -func testGenesis(account common.Address, balance *big.Int) *Genesis { - return &Genesis{ - Config: params.TestChainConfig, - Alloc: GenesisAlloc{account: {Balance: balance}}, +// Tests that simple header verification works, for both good and bad blocks. +func TestHeaderVerification(t *testing.T) { + // Create a simple chain to verify + var ( + testdb, _ = ethdb.NewMemDatabase() + gspec = &Genesis{Config: params.TestChainConfig} + genesis = gspec.MustCommit(testdb) + blocks, _ = GenerateChain(params.TestChainConfig, genesis, testdb, 8, nil) + ) + headers := make([]*types.Header, len(blocks)) + for i, block := range blocks { + headers[i] = block.Header() + } + // Run the header checker for blocks one-by-one, checking for both valid and invalid nonces + chain, _ := NewBlockChain(testdb, params.TestChainConfig, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) + + for i := 0; i < len(blocks); i++ { + for j, valid := range []bool{true, false} { + var results <-chan error + + if valid { + engine := ethash.NewFaker() + _, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true}) + } else { + engine := ethash.NewFakeFailer(headers[i].Number.Uint64()) + _, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true}) + } + // Wait for the verification result + select { + case result := <-results: + if (result == nil) != valid { + t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, result, valid) + } + case <-time.After(time.Second): + t.Fatalf("test %d.%d: verification timeout", i, j) + } + // Make sure no more data is returned + select { + case result := <-results: + t.Fatalf("test %d.%d: unexpected result returned: %v", i, j, result) + case <-time.After(25 * time.Millisecond): + } + } + chain.InsertChain(blocks[i : i+1]) } } -func TestNumber(t *testing.T) { - chain := newTestBlockChain() - statedb, _ := state.New(chain.Genesis().Root(), chain.chainDb) - header := makeHeader(chain.config, chain.Genesis(), statedb) - header.Number = big.NewInt(3) - err := ValidateHeader(chain.config, pow.FakePow{}, header, chain.Genesis().Header(), false, false) - if err != BlockNumberErr { - t.Errorf("expected block number error, got %q", err) - } +// Tests that concurrent header verification works, for both good and bad blocks. +func TestHeaderConcurrentVerification2(t *testing.T) { testHeaderConcurrentVerification(t, 2) } +func TestHeaderConcurrentVerification8(t *testing.T) { testHeaderConcurrentVerification(t, 8) } +func TestHeaderConcurrentVerification32(t *testing.T) { testHeaderConcurrentVerification(t, 32) } - header = makeHeader(chain.config, chain.Genesis(), statedb) - err = ValidateHeader(chain.config, pow.FakePow{}, header, chain.Genesis().Header(), false, false) - if err == BlockNumberErr { - t.Errorf("didn't expect block number error") +func testHeaderConcurrentVerification(t *testing.T, threads int) { + // Create a simple chain to verify + var ( + testdb, _ = ethdb.NewMemDatabase() + gspec = &Genesis{Config: params.TestChainConfig} + genesis = gspec.MustCommit(testdb) + blocks, _ = GenerateChain(params.TestChainConfig, genesis, testdb, 8, nil) + ) + headers := make([]*types.Header, len(blocks)) + seals := make([]bool, len(blocks)) + + for i, block := range blocks { + headers[i] = block.Header() + seals[i] = true + } + // Set the number of threads to verify on + old := runtime.GOMAXPROCS(threads) + defer runtime.GOMAXPROCS(old) + + // Run the header checker for the entire block chain at once both for a valid and + // also an invalid chain (enough if one arbitrary block is invalid). + for i, valid := range []bool{true, false} { + var results <-chan error + + if valid { + chain, _ := NewBlockChain(testdb, params.TestChainConfig, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) + _, results = chain.engine.VerifyHeaders(chain, headers, seals) + } else { + chain, _ := NewBlockChain(testdb, params.TestChainConfig, ethash.NewFakeFailer(uint64(len(headers)-1)), new(event.TypeMux), vm.Config{}) + _, results = chain.engine.VerifyHeaders(chain, headers, seals) + } + // Wait for all the verification results + checks := make(map[int]error) + for j := 0; j < len(blocks); j++ { + select { + case result := <-results: + checks[j] = result + + case <-time.After(time.Second): + t.Fatalf("test %d.%d: verification timeout", i, j) + } + } + // Check nonce check validity + for j := 0; j < len(blocks); j++ { + want := valid || (j < len(blocks)-2) // We chose the last-but-one nonce in the chain to fail + if (checks[j] == nil) != want { + t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, checks[j], want) + } + if !want { + // A few blocks after the first error may pass verification due to concurrent + // workers. We don't care about those in this test, just that the correct block + // errors out. + break + } + } + // Make sure no more data is returned + select { + case result := <-results: + t.Fatalf("test %d: unexpected result returned: %v", i, result) + case <-time.After(25 * time.Millisecond): + } } } -func TestPutReceipt(t *testing.T) { - db, _ := ethdb.NewMemDatabase() +// Tests that aborting a header validation indeed prevents further checks from being +// run, as well as checks that no left-over goroutines are leaked. +func TestHeaderConcurrentAbortion2(t *testing.T) { testHeaderConcurrentAbortion(t, 2) } +func TestHeaderConcurrentAbortion8(t *testing.T) { testHeaderConcurrentAbortion(t, 8) } +func TestHeaderConcurrentAbortion32(t *testing.T) { testHeaderConcurrentAbortion(t, 32) } - var addr common.Address - addr[0] = 1 - var hash common.Hash - hash[0] = 2 +func testHeaderConcurrentAbortion(t *testing.T, threads int) { + // Create a simple chain to verify + var ( + testdb, _ = ethdb.NewMemDatabase() + gspec = &Genesis{Config: params.TestChainConfig} + genesis = gspec.MustCommit(testdb) + blocks, _ = GenerateChain(params.TestChainConfig, genesis, testdb, 1024, nil) + ) + headers := make([]*types.Header, len(blocks)) + seals := make([]bool, len(blocks)) - receipt := new(types.Receipt) - receipt.Logs = []*types.Log{{ - Address: addr, - Topics: []common.Hash{hash}, - Data: []byte("hi"), - BlockNumber: 42, - TxHash: hash, - TxIndex: 0, - BlockHash: hash, - Index: 0, - }} + for i, block := range blocks { + headers[i] = block.Header() + seals[i] = true + } + // Set the number of threads to verify on + old := runtime.GOMAXPROCS(threads) + defer runtime.GOMAXPROCS(old) - WriteReceipts(db, types.Receipts{receipt}) - receipt = GetReceipt(db, common.Hash{}) - if receipt == nil { - t.Error("expected to get 1 receipt, got none.") + // Start the verifications and immediately abort + chain, _ := NewBlockChain(testdb, params.TestChainConfig, ethash.NewFakeDelayer(time.Millisecond), new(event.TypeMux), vm.Config{}) + abort, results := chain.engine.VerifyHeaders(chain, headers, seals) + close(abort) + + // Deplete the results channel + verified := 0 + for depleted := false; !depleted; { + select { + case result := <-results: + if result != nil { + t.Errorf("header %d: validation failed: %v", verified, result) + } + verified++ + case <-time.After(50 * time.Millisecond): + depleted = true + } + } + // Check that abortion was honored by not processing too many POWs + if verified > 2*threads { + t.Errorf("verification count too large: have %d, want below %d", verified, 2*threads) } } diff --git a/core/blockchain.go b/core/blockchain.go index a57832df02..4793431d8e 100644 --- a/core/blockchain.go +++ b/core/blockchain.go @@ -30,6 +30,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/mclock" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -39,7 +40,6 @@ import ( "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/metrics" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" "github.com/hashicorp/golang-lru" @@ -104,7 +104,7 @@ type BlockChain struct { procInterrupt int32 // interrupt signaler for block processing wg sync.WaitGroup // chain processing wait group for shutting down - pow pow.PoW + engine consensus.Engine processor Processor // block processor interface validator Validator // block and state validator interface vmConfig vm.Config @@ -115,7 +115,7 @@ type BlockChain struct { // NewBlockChain returns a fully initialised block chain using information // available in the database. It initialiser the default Ethereum Validator and // Processor. -func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, pow pow.PoW, mux *event.TypeMux, vmConfig vm.Config) (*BlockChain, error) { +func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, engine consensus.Engine, mux *event.TypeMux, vmConfig vm.Config) (*BlockChain, error) { bodyCache, _ := lru.New(bodyCacheLimit) bodyRLPCache, _ := lru.New(bodyCacheLimit) blockCache, _ := lru.New(blockCacheLimit) @@ -131,25 +131,22 @@ func NewBlockChain(chainDb ethdb.Database, config *params.ChainConfig, pow pow.P bodyRLPCache: bodyRLPCache, blockCache: blockCache, futureBlocks: futureBlocks, - pow: pow, + engine: engine, vmConfig: vmConfig, badBlocks: badBlocks, } - bc.SetValidator(NewBlockValidator(config, bc, pow)) - bc.SetProcessor(NewStateProcessor(config, bc)) + bc.SetValidator(NewBlockValidator(config, bc, engine)) + bc.SetProcessor(NewStateProcessor(config, bc, engine)) - gv := func() HeaderValidator { return bc.Validator() } var err error - bc.hc, err = NewHeaderChain(chainDb, config, gv, bc.getProcInterrupt) + bc.hc, err = NewHeaderChain(chainDb, config, engine, bc.getProcInterrupt) if err != nil { return nil, err } - bc.genesisBlock = bc.GetBlockByNumber(0) if bc.genesisBlock == nil { return nil, ErrNoGenesis } - if err := bc.loadLastState(); err != nil { return nil, err } @@ -233,9 +230,6 @@ func (self *BlockChain) loadLastState() error { log.Info("Loaded most recent local full block", "number", self.currentBlock.Number(), "hash", self.currentBlock.Hash(), "td", blockTd) log.Info("Loaded most recent local fast block", "number", self.currentFastBlock.Number(), "hash", self.currentFastBlock.Hash(), "td", fastTd) - // Try to be smart and issue a pow verification for the head to pre-generate caches - go self.pow.Verify(types.NewBlockWithHeader(currentHeader)) - return nil } @@ -383,9 +377,6 @@ func (self *BlockChain) Processor() Processor { return self.processor } -// AuxValidator returns the auxiliary validator (Proof of work atm) -func (self *BlockChain) AuxValidator() pow.PoW { return self.pow } - // State returns a new mutable state based on the current HEAD block. func (self *BlockChain) State() (*state.StateDB, error) { return self.StateAt(self.CurrentBlock().Root()) @@ -906,38 +897,38 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) { stats = insertStats{startTime: mclock.Now()} events = make([]interface{}, 0, len(chain)) coalescedLogs []*types.Log - nonceChecked = make([]bool, len(chain)) ) - - // Start the parallel nonce verifier. - nonceAbort, nonceResults := verifyNoncesFromBlocks(self.pow, chain) - defer close(nonceAbort) + // Start the parallel header verifier + headers := make([]*types.Header, len(chain)) + seals := make([]bool, len(chain)) for i, block := range chain { + headers[i] = block.Header() + seals[i] = true + } + abort, results := self.engine.VerifyHeaders(self, headers, seals) + defer close(abort) + + // Iterate over the blocks and insert when the verifier permits + for i, block := range chain { + // If the chain is terminating, stop processing blocks if atomic.LoadInt32(&self.procInterrupt) == 1 { log.Debug("Premature abort during blocks processing") break } - bstart := time.Now() - // Wait for block i's nonce to be verified before processing - // its state transition. - for !nonceChecked[i] { - r := <-nonceResults - nonceChecked[r.index] = true - if !r.valid { - invalid := chain[r.index] - return r.index, &BlockNonceErr{Hash: invalid.Hash(), Number: invalid.Number(), Nonce: invalid.Nonce()} - } - } - + // If the header is a banned one, straight out abort if BadHashes[block.Hash()] { err := BadHashError(block.Hash()) self.reportBlock(block, nil, err) return i, err } - // Stage 1 validation of the block using the chain's validator - // interface. - err := self.Validator().ValidateBlock(block) + // Wait for the block's verification to complete + bstart := time.Now() + + err := <-results + if err == nil { + err = self.Validator().ValidateBody(block) + } if err != nil { if IsKnownBlockErr(err) { stats.ignored++ @@ -952,7 +943,6 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) { if block.Time().Cmp(max) == 1 { return i, fmt.Errorf("%v: BlockFutureErr, %v > %v", BlockFutureErr, block.Time(), max) } - self.futureBlocks.Add(block.Hash(), block) stats.queued++ continue diff --git a/core/blockchain_test.go b/core/blockchain_test.go index 3da133a9ea..b2fb226dbb 100644 --- a/core/blockchain_test.go +++ b/core/blockchain_test.go @@ -24,6 +24,7 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -31,18 +32,21 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) // newTestBlockChain creates a blockchain without validation. -func newTestBlockChain() *BlockChain { +func newTestBlockChain(fake bool) *BlockChain { db, _ := ethdb.NewMemDatabase() gspec := &Genesis{ Config: params.TestChainConfig, Difficulty: big.NewInt(1), } gspec.MustCommit(db) - blockchain, err := NewBlockChain(db, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + engine := ethash.NewFullFaker() + if !fake { + engine = ethash.NewTester() + } + blockchain, err := NewBlockChain(db, gspec.Config, engine, new(event.TypeMux), vm.Config{}) if err != nil { panic(err) } @@ -117,7 +121,10 @@ func printChain(bc *BlockChain) { func testBlockChainImport(chain types.Blocks, blockchain *BlockChain) error { for _, block := range chain { // Try and process the block - err := blockchain.Validator().ValidateBlock(block) + err := blockchain.engine.VerifyHeader(blockchain, block.Header(), true) + if err == nil { + err = blockchain.validator.ValidateBody(block) + } if err != nil { if IsKnownBlockErr(err) { continue @@ -133,7 +140,7 @@ func testBlockChainImport(chain types.Blocks, blockchain *BlockChain) error { blockchain.reportBlock(block, receipts, err) return err } - err = blockchain.Validator().ValidateState(block, blockchain.GetBlockByHash(block.ParentHash()), statedb, receipts, usedGas) + err = blockchain.validator.ValidateState(block, blockchain.GetBlockByHash(block.ParentHash()), statedb, receipts, usedGas) if err != nil { blockchain.reportBlock(block, receipts, err) return err @@ -152,7 +159,7 @@ func testBlockChainImport(chain types.Blocks, blockchain *BlockChain) error { func testHeaderChainImport(chain []*types.Header, blockchain *BlockChain) error { for _, header := range chain { // Try and validate the header - if err := blockchain.Validator().ValidateHeader(header, blockchain.GetHeaderByHash(header.ParentHash), false); err != nil { + if err := blockchain.engine.VerifyHeader(blockchain, header, false); err != nil { return err } // Manually insert the header into the database, but don't reorganise (allows subsequent testing) @@ -174,7 +181,7 @@ func insertChain(done chan bool, blockchain *BlockChain, chain types.Blocks, t * } func TestLastBlock(t *testing.T) { - bchain := newTestBlockChain() + bchain := newTestBlockChain(false) block := makeBlockChain(bchain.CurrentBlock(), 1, bchain.chainDb, 0)[0] bchain.insert(block) if block.Hash() != GetHeadBlockHash(bchain.chainDb) { @@ -318,8 +325,7 @@ func testBrokenChain(t *testing.T, full bool) { type bproc struct{} -func (bproc) ValidateBlock(*types.Block) error { return nil } -func (bproc) ValidateHeader(*types.Header, *types.Header, bool) error { return nil } +func (bproc) ValidateBody(*types.Block) error { return nil } func (bproc) ValidateState(block, parent *types.Block, state *state.StateDB, receipts types.Receipts, usedGas *big.Int) error { return nil } @@ -378,7 +384,7 @@ func testReorgShort(t *testing.T, full bool) { } func testReorg(t *testing.T, first, second []int, td int64, full bool) { - bc := newTestBlockChain() + bc := newTestBlockChain(true) // Insert an easy and a difficult chain afterwards if full { @@ -422,7 +428,7 @@ func TestBadHeaderHashes(t *testing.T) { testBadHashes(t, false) } func TestBadBlockHashes(t *testing.T) { testBadHashes(t, true) } func testBadHashes(t *testing.T, full bool) { - bc := newTestBlockChain() + bc := newTestBlockChain(true) // Create a chain, ban a hash and try to import var err error @@ -446,7 +452,7 @@ func TestReorgBadHeaderHashes(t *testing.T) { testReorgBadHashes(t, false) } func TestReorgBadBlockHashes(t *testing.T) { testReorgBadHashes(t, true) } func testReorgBadHashes(t *testing.T, full bool) { - bc := newTestBlockChain() + bc := newTestBlockChain(true) // Create a chain, import and ban afterwards headers := makeHeaderChainWithDiff(bc.genesisBlock, []int{1, 2, 3, 4}, 10) @@ -473,7 +479,7 @@ func testReorgBadHashes(t *testing.T, full bool) { } // Create a new BlockChain and check that it rolled back the state. - ncm, err := NewBlockChain(bc.chainDb, bc.config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + ncm, err := NewBlockChain(bc.chainDb, bc.config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) if err != nil { t.Fatalf("failed to create new chain manager: %v", err) } @@ -504,46 +510,34 @@ func testInsertNonceError(t *testing.T, full bool) { } // Create and insert a chain with a failing nonce var ( - failAt int - failRes int - failNum uint64 - failHash common.Hash + failAt int + failRes int + failNum uint64 ) if full { blocks := makeBlockChain(blockchain.CurrentBlock(), i, db, 0) failAt = rand.Int() % len(blocks) failNum = blocks[failAt].NumberU64() - failHash = blocks[failAt].Hash() - - blockchain.pow = failPow{failNum} + blockchain.engine = ethash.NewFakeFailer(failNum) failRes, err = blockchain.InsertChain(blocks) } else { headers := makeHeaderChain(blockchain.CurrentHeader(), i, db, 0) failAt = rand.Int() % len(headers) failNum = headers[failAt].Number.Uint64() - failHash = headers[failAt].Hash() - - blockchain.pow = failPow{failNum} - blockchain.validator = NewBlockValidator(params.TestChainConfig, blockchain, failPow{failNum}) + blockchain.engine = ethash.NewFakeFailer(failNum) + blockchain.hc.engine = blockchain.engine failRes, err = blockchain.InsertHeaderChain(headers, 1) } // Check that the returned error indicates the nonce failure. if failRes != failAt { t.Errorf("test %d: failure index mismatch: have %d, want %d", i, failRes, failAt) } - if !IsBlockNonceErr(err) { - t.Fatalf("test %d: error mismatch: have %v, want nonce error %T", i, err, err) - } - nerr := err.(*BlockNonceErr) - if nerr.Number.Uint64() != failNum { - t.Errorf("test %d: number mismatch: have %v, want %v", i, nerr.Number, failNum) - } - if nerr.Hash != failHash { - t.Errorf("test %d: hash mismatch: have %x, want %x", i, nerr.Hash[:4], failHash[:4]) + if err != ethash.ErrInvalidPoW { + t.Fatalf("test %d: error mismatch: have %v, want %v", i, err, ethash.ErrInvalidPoW) } // Check that all no blocks after the failing block have been inserted. for j := 0; j < i-failAt; j++ { @@ -569,9 +563,12 @@ func TestFastVsFullChains(t *testing.T) { key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") address = crypto.PubkeyToAddress(key.PublicKey) funds = big.NewInt(1000000000) - gspec = testGenesis(address, funds) - genesis = gspec.MustCommit(gendb) - signer = types.NewEIP155Signer(gspec.Config.ChainId) + gspec = &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{address: {Balance: funds}}, + } + genesis = gspec.MustCommit(gendb) + signer = types.NewEIP155Signer(gspec.Config.ChainId) ) blocks, receipts := GenerateChain(gspec.Config, genesis, gendb, 1024, func(i int, block *BlockGen) { block.SetCoinbase(common.Address{0x00}) @@ -594,7 +591,7 @@ func TestFastVsFullChains(t *testing.T) { // Import the chain as an archive node for the comparison baseline archiveDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(archiveDb) - archive, _ := NewBlockChain(archiveDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + archive, _ := NewBlockChain(archiveDb, gspec.Config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) if n, err := archive.InsertChain(blocks); err != nil { t.Fatalf("failed to process block %d: %v", n, err) @@ -603,7 +600,7 @@ func TestFastVsFullChains(t *testing.T) { // Fast import the chain as a non-archive node to test fastDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(fastDb) - fast, _ := NewBlockChain(fastDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + fast, _ := NewBlockChain(fastDb, gspec.Config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) headers := make([]*types.Header, len(blocks)) for i, block := range blocks { @@ -680,8 +677,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { archiveDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(archiveDb) - archive, _ := NewBlockChain(archiveDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) - + archive, _ := NewBlockChain(archiveDb, gspec.Config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) if n, err := archive.InsertChain(blocks); err != nil { t.Fatalf("failed to process block %d: %v", n, err) } @@ -692,7 +688,7 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Import the chain as a non-archive node and ensure all pointers are updated fastDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(fastDb) - fast, _ := NewBlockChain(fastDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + fast, _ := NewBlockChain(fastDb, gspec.Config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) headers := make([]*types.Header, len(blocks)) for i, block := range blocks { @@ -711,8 +707,8 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) { // Import the chain as a light node and ensure all pointers are updated lightDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(lightDb) - light, _ := NewBlockChain(lightDb, gspec.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + light, _ := NewBlockChain(lightDb, gspec.Config, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) if n, err := light.InsertHeaderChain(headers, 1); err != nil { t.Fatalf("failed to insert header %d: %v", n, err) } @@ -780,7 +776,7 @@ func TestChainTxReorgs(t *testing.T) { }) // Import the chain. This runs all block validation rules. evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, ethash.NewFaker(), evmux, vm.Config{}) if i, err := blockchain.InsertChain(chain); err != nil { t.Fatalf("failed to insert original chain[%d]: %v", i, err) } @@ -851,7 +847,7 @@ func TestLogReorgs(t *testing.T) { ) var evmux event.TypeMux - blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, &evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, ethash.NewFaker(), &evmux, vm.Config{}) subs := evmux.Subscribe(RemovedLogsEvent{}) chain, _ := GenerateChain(params.TestChainConfig, genesis, db, 2, func(i int, gen *BlockGen) { @@ -883,13 +879,16 @@ func TestReorgSideEvent(t *testing.T) { db, _ = ethdb.NewMemDatabase() key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") addr1 = crypto.PubkeyToAddress(key1.PublicKey) - gspec = testGenesis(addr1, big.NewInt(10000000000000)) + gspec = &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{addr1: {Balance: big.NewInt(10000000000000)}}, + } genesis = gspec.MustCommit(db) signer = types.NewEIP155Signer(gspec.Config.ChainId) ) evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, ethash.NewFaker(), evmux, vm.Config{}) chain, _ := GenerateChain(gspec.Config, genesis, db, 3, func(i int, gen *BlockGen) {}) if _, err := blockchain.InsertChain(chain); err != nil { @@ -959,7 +958,7 @@ done: // Tests if the canonical block can be fetched from the database during chain insertion. func TestCanonicalBlockRetrieval(t *testing.T) { - bc := newTestBlockChain() + bc := newTestBlockChain(false) chain, _ := GenerateChain(bc.config, bc.genesisBlock, bc.chainDb, 10, func(i int, gen *BlockGen) {}) for i := range chain { @@ -1004,7 +1003,7 @@ func TestEIP155Transition(t *testing.T) { mux event.TypeMux ) - blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, &mux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, ethash.NewFaker(), &mux, vm.Config{}) blocks, _ := GenerateChain(gspec.Config, genesis, db, 4, func(i int, block *BlockGen) { var ( tx *types.Transaction @@ -1110,7 +1109,7 @@ func TestEIP161AccountRemoval(t *testing.T) { } genesis = gspec.MustCommit(db) mux event.TypeMux - blockchain, _ = NewBlockChain(db, gspec.Config, pow.FakePow{}, &mux, vm.Config{}) + blockchain, _ = NewBlockChain(db, gspec.Config, ethash.NewFaker(), &mux, vm.Config{}) ) blocks, _ := GenerateChain(gspec.Config, genesis, db, 3, func(i int, block *BlockGen) { var ( diff --git a/core/chain_makers.go b/core/chain_makers.go index 5bf1ece25b..c47c719f64 100644 --- a/core/chain_makers.go +++ b/core/chain_makers.go @@ -21,13 +21,14 @@ import ( "math/big" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" + "github.com/ethereum/go-ethereum/consensus/misc" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) // So we can deterministically seed different blockchains @@ -141,7 +142,7 @@ func (b *BlockGen) OffsetTime(seconds int64) { if b.header.Time.Cmp(b.parent.Header().Time) <= 0 { panic("block time out of range") } - b.header.Difficulty = CalcDifficulty(b.config, b.header.Time.Uint64(), b.parent.Time().Uint64(), b.parent.Number(), b.parent.Difficulty()) + b.header.Difficulty = ethash.CalcDifficulty(b.config, b.header.Time.Uint64(), b.parent.Time().Uint64(), b.parent.Number(), b.parent.Difficulty()) } // GenerateChain creates a chain of n blocks. The first block's @@ -173,13 +174,13 @@ func GenerateChain(config *params.ChainConfig, parent *types.Block, db ethdb.Dat } } if config.DAOForkSupport && config.DAOForkBlock != nil && config.DAOForkBlock.Cmp(h.Number) == 0 { - ApplyDAOHardFork(statedb) + misc.ApplyDAOHardFork(statedb) } // Execute any user modifications to the block and finalize it if gen != nil { gen(i, b) } - AccumulateRewards(statedb, h, b.uncles) + ethash.AccumulateRewards(statedb, h, b.uncles) root, err := statedb.Commit(config.IsEIP158(h.Number)) if err != nil { panic(fmt.Sprintf("state write error: %v", err)) @@ -212,7 +213,7 @@ func makeHeader(config *params.ChainConfig, parent *types.Block, state *state.St Root: state.IntermediateRoot(config.IsEIP158(parent.Number())), ParentHash: parent.Hash(), Coinbase: parent.Coinbase(), - Difficulty: CalcDifficulty(config, time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()), + Difficulty: ethash.CalcDifficulty(config, time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()), GasLimit: CalcGasLimit(parent), GasUsed: new(big.Int), Number: new(big.Int).Add(parent.Number(), common.Big1), @@ -229,7 +230,7 @@ func newCanonical(n int, full bool) (ethdb.Database, *BlockChain, error) { db, _ := ethdb.NewMemDatabase() genesis := gspec.MustCommit(db) - blockchain, _ := NewBlockChain(db, params.AllProtocolChanges, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + blockchain, _ := NewBlockChain(db, params.AllProtocolChanges, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) // Create and inject the requested chain if n == 0 { return db, blockchain, nil diff --git a/core/chain_makers_test.go b/core/chain_makers_test.go index a8f77cdf3e..3a7c62396f 100644 --- a/core/chain_makers_test.go +++ b/core/chain_makers_test.go @@ -20,13 +20,13 @@ import ( "fmt" "math/big" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) func ExampleGenerateChain() { @@ -81,7 +81,7 @@ func ExampleGenerateChain() { // Import the chain. This runs all block validation rules. evmux := &event.TypeMux{} - blockchain, _ := NewBlockChain(db, gspec.Config, pow.FakePow{}, evmux, vm.Config{}) + blockchain, _ := NewBlockChain(db, gspec.Config, ethash.NewFaker(), evmux, vm.Config{}) if i, err := blockchain.InsertChain(chain); err != nil { fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err) return diff --git a/core/chain_pow.go b/core/chain_pow.go deleted file mode 100644 index e5ccd87e20..0000000000 --- a/core/chain_pow.go +++ /dev/null @@ -1,87 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package core - -import ( - "runtime" - - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/pow" -) - -// nonceCheckResult contains the result of a nonce verification. -type nonceCheckResult struct { - index int // Index of the item verified from an input array - valid bool // Result of the nonce verification -} - -// verifyNoncesFromHeaders starts a concurrent header nonce verification, -// returning a quit channel to abort the operations and a results channel -// to retrieve the async verifications. -func verifyNoncesFromHeaders(checker pow.PoW, headers []*types.Header) (chan<- struct{}, <-chan nonceCheckResult) { - items := make([]pow.Block, len(headers)) - for i, header := range headers { - items[i] = types.NewBlockWithHeader(header) - } - return verifyNonces(checker, items) -} - -// verifyNoncesFromBlocks starts a concurrent block nonce verification, -// returning a quit channel to abort the operations and a results channel -// to retrieve the async verifications. -func verifyNoncesFromBlocks(checker pow.PoW, blocks []*types.Block) (chan<- struct{}, <-chan nonceCheckResult) { - items := make([]pow.Block, len(blocks)) - for i, block := range blocks { - items[i] = block - } - return verifyNonces(checker, items) -} - -// verifyNonces starts a concurrent nonce verification, returning a quit channel -// to abort the operations and a results channel to retrieve the async checks. -func verifyNonces(checker pow.PoW, items []pow.Block) (chan<- struct{}, <-chan nonceCheckResult) { - // Spawn as many workers as allowed threads - workers := runtime.GOMAXPROCS(0) - if len(items) < workers { - workers = len(items) - } - // Create a task channel and spawn the verifiers - tasks := make(chan int, workers) - results := make(chan nonceCheckResult, len(items)) // Buffered to make sure all workers stop - for i := 0; i < workers; i++ { - go func() { - for index := range tasks { - results <- nonceCheckResult{index: index, valid: checker.Verify(items[index]) == nil} - } - }() - } - // Feed item indices to the workers until done or aborted - abort := make(chan struct{}) - go func() { - defer close(tasks) - - for i := range items { - select { - case tasks <- i: - continue - case <-abort: - return - } - } - }() - return abort, results -} diff --git a/core/chain_pow_test.go b/core/chain_pow_test.go deleted file mode 100644 index 311ca128e6..0000000000 --- a/core/chain_pow_test.go +++ /dev/null @@ -1,238 +0,0 @@ -// Copyright 2015 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package core - -import ( - "errors" - "math/big" - "runtime" - "testing" - "time" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/types" - "github.com/ethereum/go-ethereum/ethdb" - "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" -) - -// failPow is a non-validating proof of work implementation, that returns true -// from Verify for all but one block. -type failPow struct { - failing uint64 -} - -func (pow failPow) Search(pow.Block, <-chan struct{}) (uint64, []byte) { - return 0, nil -} -func (pow failPow) Verify(block pow.Block) error { - if block.NumberU64() == pow.failing { - return errors.New("failed") - } - return nil -} -func (pow failPow) Hashrate() float64 { return 0 } - -// delayedPow is a non-validating proof of work implementation, that returns true -// from Verify for all blocks, but delays them the configured amount of time. -type delayedPow struct { - delay time.Duration -} - -func (pow delayedPow) Search(pow.Block, <-chan struct{}) (uint64, []byte) { - return 0, nil -} -func (pow delayedPow) Verify(block pow.Block) error { time.Sleep(pow.delay); return nil } -func (pow delayedPow) Hashrate() float64 { return 0 } - -// Tests that simple POW verification works, for both good and bad blocks. -func TestPowVerification(t *testing.T) { - // Create a simple chain to verify - var ( - testdb, _ = ethdb.NewMemDatabase() - genesis = GenesisBlockForTesting(testdb, common.Address{}, new(big.Int)) - blocks, _ = GenerateChain(params.TestChainConfig, genesis, testdb, 8, nil) - ) - headers := make([]*types.Header, len(blocks)) - for i, block := range blocks { - headers[i] = block.Header() - } - // Run the POW checker for blocks one-by-one, checking for both valid and invalid nonces - for i := 0; i < len(blocks); i++ { - for j, full := range []bool{true, false} { - for k, valid := range []bool{true, false} { - var results <-chan nonceCheckResult - - switch { - case full && valid: - _, results = verifyNoncesFromBlocks(pow.FakePow{}, []*types.Block{blocks[i]}) - case full && !valid: - _, results = verifyNoncesFromBlocks(failPow{blocks[i].NumberU64()}, []*types.Block{blocks[i]}) - case !full && valid: - _, results = verifyNoncesFromHeaders(pow.FakePow{}, []*types.Header{headers[i]}) - case !full && !valid: - _, results = verifyNoncesFromHeaders(failPow{headers[i].Number.Uint64()}, []*types.Header{headers[i]}) - } - // Wait for the verification result - select { - case result := <-results: - if result.index != 0 { - t.Errorf("test %d.%d.%d: invalid index: have %d, want 0", i, j, k, result.index) - } - if result.valid != valid { - t.Errorf("test %d.%d.%d: validity mismatch: have %v, want %v", i, j, k, result.valid, valid) - } - case <-time.After(time.Second): - t.Fatalf("test %d.%d.%d: verification timeout", i, j, k) - } - // Make sure no more data is returned - select { - case result := <-results: - t.Fatalf("test %d.%d.%d: unexpected result returned: %v", i, j, k, result) - case <-time.After(25 * time.Millisecond): - } - } - } - } -} - -// Tests that concurrent POW verification works, for both good and bad blocks. -func TestPowConcurrentVerification2(t *testing.T) { testPowConcurrentVerification(t, 2) } -func TestPowConcurrentVerification8(t *testing.T) { testPowConcurrentVerification(t, 8) } -func TestPowConcurrentVerification32(t *testing.T) { testPowConcurrentVerification(t, 32) } - -func testPowConcurrentVerification(t *testing.T, threads int) { - // Create a simple chain to verify - var ( - testdb, _ = ethdb.NewMemDatabase() - genesis = GenesisBlockForTesting(testdb, common.Address{}, new(big.Int)) - blocks, _ = GenerateChain(params.TestChainConfig, genesis, testdb, 8, nil) - ) - headers := make([]*types.Header, len(blocks)) - for i, block := range blocks { - headers[i] = block.Header() - } - // Set the number of threads to verify on - old := runtime.GOMAXPROCS(threads) - defer runtime.GOMAXPROCS(old) - - // Run the POW checker for the entire block chain at once both for a valid and - // also an invalid chain (enough if one is invalid, last but one (arbitrary)). - for i, full := range []bool{true, false} { - for j, valid := range []bool{true, false} { - var results <-chan nonceCheckResult - - switch { - case full && valid: - _, results = verifyNoncesFromBlocks(pow.FakePow{}, blocks) - case full && !valid: - _, results = verifyNoncesFromBlocks(failPow{uint64(len(blocks) - 1)}, blocks) - case !full && valid: - _, results = verifyNoncesFromHeaders(pow.FakePow{}, headers) - case !full && !valid: - _, results = verifyNoncesFromHeaders(failPow{uint64(len(headers) - 1)}, headers) - } - // Wait for all the verification results - checks := make(map[int]bool) - for k := 0; k < len(blocks); k++ { - select { - case result := <-results: - if _, ok := checks[result.index]; ok { - t.Fatalf("test %d.%d.%d: duplicate results for %d", i, j, k, result.index) - } - if result.index < 0 || result.index >= len(blocks) { - t.Fatalf("test %d.%d.%d: result %d out of bounds [%d, %d]", i, j, k, result.index, 0, len(blocks)-1) - } - checks[result.index] = result.valid - - case <-time.After(time.Second): - t.Fatalf("test %d.%d.%d: verification timeout", i, j, k) - } - } - // Check nonce check validity - for k := 0; k < len(blocks); k++ { - want := valid || (k != len(blocks)-2) // We chose the last but one nonce in the chain to fail - if checks[k] != want { - t.Errorf("test %d.%d.%d: validity mismatch: have %v, want %v", i, j, k, checks[k], want) - } - } - // Make sure no more data is returned - select { - case result := <-results: - t.Fatalf("test %d.%d: unexpected result returned: %v", i, j, result) - case <-time.After(25 * time.Millisecond): - } - } - } -} - -// Tests that aborting a POW validation indeed prevents further checks from being -// run, as well as checks that no left-over goroutines are leaked. -func TestPowConcurrentAbortion2(t *testing.T) { testPowConcurrentAbortion(t, 2) } -func TestPowConcurrentAbortion8(t *testing.T) { testPowConcurrentAbortion(t, 8) } -func TestPowConcurrentAbortion32(t *testing.T) { testPowConcurrentAbortion(t, 32) } - -func testPowConcurrentAbortion(t *testing.T, threads int) { - // Create a simple chain to verify - var ( - testdb, _ = ethdb.NewMemDatabase() - genesis = GenesisBlockForTesting(testdb, common.Address{}, new(big.Int)) - blocks, _ = GenerateChain(params.TestChainConfig, genesis, testdb, 1024, nil) - ) - headers := make([]*types.Header, len(blocks)) - for i, block := range blocks { - headers[i] = block.Header() - } - // Set the number of threads to verify on - old := runtime.GOMAXPROCS(threads) - defer runtime.GOMAXPROCS(old) - - // Run the POW checker for the entire block chain at once - for i, full := range []bool{true, false} { - var abort chan<- struct{} - var results <-chan nonceCheckResult - - // Start the verifications and immediately abort - if full { - abort, results = verifyNoncesFromBlocks(delayedPow{time.Millisecond}, blocks) - } else { - abort, results = verifyNoncesFromHeaders(delayedPow{time.Millisecond}, headers) - } - close(abort) - - // Deplete the results channel - verified := make(map[int]struct{}) - for depleted := false; !depleted; { - select { - case result := <-results: - verified[result.index] = struct{}{} - case <-time.After(50 * time.Millisecond): - depleted = true - } - } - // Check that abortion was honored by not processing too many POWs - if len(verified) > 2*threads { - t.Errorf("test %d: verification count too large: have %d, want below %d", i, len(verified), 2*threads) - } - // Check that there are no gaps in the results - for j := 0; j < len(verified); j++ { - if _, ok := verified[j]; !ok { - t.Errorf("test %d.%d: gap found in verification results", i, j) - } - } - } -} diff --git a/core/dao_test.go b/core/dao_test.go index c0d4826303..cb6e54f8f2 100644 --- a/core/dao_test.go +++ b/core/dao_test.go @@ -20,11 +20,11 @@ import ( "math/big" "testing" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) // Tests that DAO-fork enabled clients can properly filter out fork-commencing @@ -42,12 +42,12 @@ func TestDAOForkRangeExtradata(t *testing.T) { proDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(proDb) proConf := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true} - proBc, _ := NewBlockChain(proDb, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + proBc, _ := NewBlockChain(proDb, proConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) conDb, _ := ethdb.NewMemDatabase() gspec.MustCommit(conDb) conConf := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false} - conBc, _ := NewBlockChain(conDb, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + conBc, _ := NewBlockChain(conDb, conConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) if _, err := proBc.InsertChain(prefix); err != nil { t.Fatalf("pro-fork: failed to import chain prefix: %v", err) @@ -60,7 +60,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Create a pro-fork block, and try to feed into the no-fork chain db, _ = ethdb.NewMemDatabase() gspec.MustCommit(db) - bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + bc, _ := NewBlockChain(db, conConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { @@ -81,7 +81,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Create a no-fork block, and try to feed into the pro-fork chain db, _ = ethdb.NewMemDatabase() gspec.MustCommit(db) - bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + bc, _ = NewBlockChain(db, proConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { @@ -103,7 +103,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Verify that contra-forkers accept pro-fork extra-datas after forking finishes db, _ = ethdb.NewMemDatabase() gspec.MustCommit(db) - bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + bc, _ := NewBlockChain(db, conConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { @@ -119,7 +119,7 @@ func TestDAOForkRangeExtradata(t *testing.T) { // Verify that pro-forkers accept contra-fork extra-datas after forking finishes db, _ = ethdb.NewMemDatabase() gspec.MustCommit(db) - bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{}) + bc, _ = NewBlockChain(db, proConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{}) blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1)) for j := 0; j < len(blocks)/2; j++ { diff --git a/core/database_util_test.go b/core/database_util_test.go index e6be060930..9f16b660a9 100644 --- a/core/database_util_test.go +++ b/core/database_util_test.go @@ -18,14 +18,12 @@ package core import ( "bytes" - "encoding/json" "io/ioutil" "math/big" "os" "testing" "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/common/math" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/crypto/sha3" @@ -34,58 +32,6 @@ import ( "github.com/ethereum/go-ethereum/rlp" ) -type diffTest struct { - ParentTimestamp uint64 - ParentDifficulty *big.Int - CurrentTimestamp uint64 - CurrentBlocknumber *big.Int - CurrentDifficulty *big.Int -} - -func (d *diffTest) UnmarshalJSON(b []byte) (err error) { - var ext struct { - ParentTimestamp string - ParentDifficulty string - CurrentTimestamp string - CurrentBlocknumber string - CurrentDifficulty string - } - if err := json.Unmarshal(b, &ext); err != nil { - return err - } - - d.ParentTimestamp = math.MustParseUint64(ext.ParentTimestamp) - d.ParentDifficulty = math.MustParseBig256(ext.ParentDifficulty) - d.CurrentTimestamp = math.MustParseUint64(ext.CurrentTimestamp) - d.CurrentBlocknumber = math.MustParseBig256(ext.CurrentBlocknumber) - d.CurrentDifficulty = math.MustParseBig256(ext.CurrentDifficulty) - - return nil -} - -func TestCalcDifficulty(t *testing.T) { - file, err := os.Open("../tests/files/BasicTests/difficulty.json") - if err != nil { - t.Fatal(err) - } - defer file.Close() - - tests := make(map[string]diffTest) - err = json.NewDecoder(file).Decode(&tests) - if err != nil { - t.Fatal(err) - } - - config := ¶ms.ChainConfig{HomesteadBlock: big.NewInt(1150000)} - for name, test := range tests { - number := new(big.Int).Sub(test.CurrentBlocknumber, big.NewInt(1)) - diff := CalcDifficulty(config, test.CurrentTimestamp, test.ParentTimestamp, number, test.ParentDifficulty) - if diff.Cmp(test.CurrentDifficulty) != 0 { - t.Error(name, "failed. Expected", test.CurrentDifficulty, "and calculated", diff) - } - } -} - // Tests block header storage and retrieval operations. func TestHeaderStorage(t *testing.T) { db, _ := ethdb.NewMemDatabase() @@ -562,7 +508,11 @@ func TestMipmapChain(t *testing.T) { ) defer db.Close() - genesis := testGenesis(addr, big.NewInt(1000000)).MustCommit(db) + gspec := &Genesis{ + Config: params.TestChainConfig, + Alloc: GenesisAlloc{addr: {Balance: big.NewInt(1000000)}}, + } + genesis := gspec.MustCommit(db) chain, receipts := GenerateChain(params.TestChainConfig, genesis, db, 1010, func(i int, gen *BlockGen) { var receipts types.Receipts switch i { diff --git a/core/genesis_test.go b/core/genesis_test.go index b73dd776fe..4312a80b89 100644 --- a/core/genesis_test.go +++ b/core/genesis_test.go @@ -23,11 +23,11 @@ import ( "github.com/davecgh/go-spew/spew" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) func TestDefaultGenesisBlock(t *testing.T) { @@ -119,7 +119,7 @@ func TestSetupGenesis(t *testing.T) { // Commit the 'old' genesis block with Homestead transition at #2. // Advance to block #4, past the homestead transition block of customg. genesis := oldcustomg.MustCommit(db) - bc, _ := NewBlockChain(db, oldcustomg.Config, pow.FakePow{}, new(event.TypeMux), vm.Config{}) + bc, _ := NewBlockChain(db, oldcustomg.Config, ethash.NewFullFaker(), new(event.TypeMux), vm.Config{}) bc.SetValidator(bproc{}) bc.InsertChain(makeBlockChainWithDiff(genesis, []int{2, 3, 4, 5}, 0)) bc.CurrentBlock() diff --git a/core/headerchain.go b/core/headerchain.go index e7660cc600..e2d0ff5b17 100644 --- a/core/headerchain.go +++ b/core/headerchain.go @@ -18,21 +18,19 @@ package core import ( crand "crypto/rand" + "errors" "fmt" "math" "math/big" mrand "math/rand" - "runtime" - "sync" - "sync/atomic" "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/hashicorp/golang-lru" ) @@ -62,18 +60,15 @@ type HeaderChain struct { procInterrupt func() bool - rand *mrand.Rand - getValidator getHeaderValidatorFn + rand *mrand.Rand + engine consensus.Engine } -// getHeaderValidatorFn returns a HeaderValidator interface -type getHeaderValidatorFn func() HeaderValidator - // NewHeaderChain creates a new HeaderChain structure. // getValidator should return the parent's validator // procInterrupt points to the parent's interrupt semaphore // wg points to the parent's shutdown wait group -func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, getValidator getHeaderValidatorFn, procInterrupt func() bool) (*HeaderChain, error) { +func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine consensus.Engine, procInterrupt func() bool) (*HeaderChain, error) { headerCache, _ := lru.New(headerCacheLimit) tdCache, _ := lru.New(tdCacheLimit) numberCache, _ := lru.New(numberCacheLimit) @@ -92,7 +87,7 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, getValid numberCache: numberCache, procInterrupt: procInterrupt, rand: mrand.New(mrand.NewSource(seed.Int64())), - getValidator: getValidator, + engine: engine, } hc.genesisHeader = hc.GetHeaderByNumber(0) @@ -228,78 +223,34 @@ func (hc *HeaderChain) ValidateHeaderChain(chain []*types.Header, checkFreq int) } } - // Generate the list of headers that should be POW verified - verify := make([]bool, len(chain)) - for i := 0; i < len(verify)/checkFreq; i++ { + // Generate the list of seal verification requests, and start the parallel verifier + seals := make([]bool, len(chain)) + for i := 0; i < len(seals)/checkFreq; i++ { index := i*checkFreq + hc.rand.Intn(checkFreq) - if index >= len(verify) { - index = len(verify) - 1 + if index >= len(seals) { + index = len(seals) - 1 } - verify[index] = true + seals[index] = true } - verify[len(verify)-1] = true // Last should always be verified to avoid junk + seals[len(seals)-1] = true // Last should always be verified to avoid junk - // Create the header verification task queue and worker functions - tasks := make(chan int, len(chain)) - for i := 0; i < len(chain); i++ { - tasks <- i - } - close(tasks) + abort, results := hc.engine.VerifyHeaders(hc, chain, seals) + defer close(abort) - errs, failed := make([]error, len(tasks)), int32(0) - process := func(worker int) { - for index := range tasks { - header, hash := chain[index], chain[index].Hash() - - // Short circuit insertion if shutting down or processing failed - if hc.procInterrupt() { - return - } - if atomic.LoadInt32(&failed) > 0 { - return - } - // Short circuit if the header is bad or already known - if BadHashes[hash] { - errs[index] = BadHashError(hash) - atomic.AddInt32(&failed, 1) - return - } - if hc.HasHeader(hash) { - continue - } - // Verify that the header honors the chain parameters - checkPow := verify[index] - - var err error - if index == 0 { - err = hc.getValidator().ValidateHeader(header, hc.GetHeader(header.ParentHash, header.Number.Uint64()-1), checkPow) - } else { - err = hc.getValidator().ValidateHeader(header, chain[index-1], checkPow) - } - if err != nil { - errs[index] = err - atomic.AddInt32(&failed, 1) - return - } + // Iterate over the headers and ensure they all check out + for i, header := range chain { + // If the chain is terminating, stop processing blocks + if hc.procInterrupt() { + log.Debug("Premature abort during headers verification") + return 0, errors.New("aborted") } - } - // Start as many worker threads as goroutines allowed - pending := new(sync.WaitGroup) - for i := 0; i < runtime.GOMAXPROCS(0); i++ { - pending.Add(1) - go func(id int) { - defer pending.Done() - process(id) - }(i) - } - pending.Wait() - - // If anything failed, report - if failed > 0 { - for i, err := range errs { - if err != nil { - return i, err - } + // If the header is a banned one, straight out abort + if BadHashes[header.Hash()] { + return i, BadHashError(header.Hash()) + } + // Otherwise wait for headers checks and ensure they pass + if err := <-results; err != nil { + return i, err } } @@ -313,13 +264,11 @@ func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, writeHeader WhCa for i, header := range chain { // Short circuit insertion if shutting down if hc.procInterrupt() { - log.Debug("Premature abort during headers processing") - break + log.Debug("Premature abort during headers import") + return i, errors.New("aborted") } - hash := header.Hash() - // If the header's already known, skip it, otherwise store - if hc.HasHeader(hash) { + if hc.GetHeader(header.Hash(), header.Number.Uint64()) != nil { stats.ignored++ continue } @@ -490,35 +439,11 @@ func (hc *HeaderChain) SetGenesis(head *types.Header) { hc.genesisHeader = head } -// headerValidator is responsible for validating block headers -// -// headerValidator implements HeaderValidator. -type headerValidator struct { - config *params.ChainConfig - hc *HeaderChain // Canonical header chain - Pow pow.PoW // Proof of work used for validating -} +// Config retrieves the header chain's chain configuration. +func (hc *HeaderChain) Config() *params.ChainConfig { return hc.config } -// NewBlockValidator returns a new block validator which is safe for re-use -func NewHeaderValidator(config *params.ChainConfig, chain *HeaderChain, pow pow.PoW) HeaderValidator { - return &headerValidator{ - config: config, - Pow: pow, - hc: chain, - } -} - -// ValidateHeader validates the given header and, depending on the pow arg, -// checks the proof of work of the given header. Returns an error if the -// validation failed. -func (v *headerValidator) ValidateHeader(header, parent *types.Header, checkPow bool) error { - // Short circuit if the parent is missing. - if parent == nil { - return ParentError(header.ParentHash) - } - // Short circuit if the header's already known or its parent missing - if v.hc.HasHeader(header.Hash()) { - return nil - } - return ValidateHeader(v.config, v.Pow, header, parent, checkPow, false) +// GetBlock implements consensus.ChainReader, and returns nil for every input as +// a header chain does not have blocks available for retrieval. +func (hc *HeaderChain) GetBlock(hash common.Hash, number uint64) *types.Block { + return nil } diff --git a/core/state_processor.go b/core/state_processor.go index 3edc042a36..aca2929eb2 100644 --- a/core/state_processor.go +++ b/core/state_processor.go @@ -19,6 +19,8 @@ package core import ( "math/big" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/consensus/misc" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -26,25 +28,22 @@ import ( "github.com/ethereum/go-ethereum/params" ) -var ( - big8 = big.NewInt(8) - big32 = big.NewInt(32) -) - // StateProcessor is a basic Processor, which takes care of transitioning // state from one point to another. // // StateProcessor implements Processor. type StateProcessor struct { - config *params.ChainConfig - bc *BlockChain + config *params.ChainConfig // Chain configuration options + bc *BlockChain // Canonical block chain + engine consensus.Engine // Consensus engine used for block rewards } // NewStateProcessor initialises a new StateProcessor. -func NewStateProcessor(config *params.ChainConfig, bc *BlockChain) *StateProcessor { +func NewStateProcessor(config *params.ChainConfig, bc *BlockChain, engine consensus.Engine) *StateProcessor { return &StateProcessor{ config: config, bc: bc, + engine: engine, } } @@ -59,18 +58,16 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg var ( receipts types.Receipts totalUsedGas = big.NewInt(0) - err error header = block.Header() allLogs []*types.Log gp = new(GasPool).AddGas(block.GasLimit()) ) // Mutate the the block and state according to any hard-fork specs if p.config.DAOForkSupport && p.config.DAOForkBlock != nil && p.config.DAOForkBlock.Cmp(block.Number()) == 0 { - ApplyDAOHardFork(statedb) + misc.ApplyDAOHardFork(statedb) } // Iterate over and process the individual transactions for i, tx := range block.Transactions() { - //fmt.Println("tx:", i) statedb.StartRecord(tx.Hash(), block.Hash(), i) receipt, _, err := ApplyTransaction(p.config, p.bc, gp, statedb, header, tx, totalUsedGas, cfg) if err != nil { @@ -79,9 +76,10 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg receipts = append(receipts, receipt) allLogs = append(allLogs, receipt.Logs...) } - AccumulateRewards(statedb, header, block.Uncles()) + // Finalize the block, applying any consensus engine specific extras (e.g. block rewards) + p.engine.Finalize(p.bc, header, statedb, block.Transactions(), block.Uncles(), receipts) - return receipts, allLogs, totalUsedGas, err + return receipts, allLogs, totalUsedGas, nil } // ApplyTransaction attempts to apply a transaction to the given state database @@ -122,23 +120,3 @@ func ApplyTransaction(config *params.ChainConfig, bc *BlockChain, gp *GasPool, s return receipt, gas, err } - -// AccumulateRewards credits the coinbase of the given block with the -// mining reward. The total reward consists of the static block reward -// and rewards for included uncles. The coinbase of each uncle block is -// also rewarded. -func AccumulateRewards(statedb *state.StateDB, header *types.Header, uncles []*types.Header) { - reward := new(big.Int).Set(BlockReward) - r := new(big.Int) - for _, uncle := range uncles { - r.Add(uncle.Number, big8) - r.Sub(r, header.Number) - r.Mul(r, BlockReward) - r.Div(r, big8) - statedb.AddBalance(uncle.Coinbase, r) - - r.Div(BlockReward, big32) - reward.Add(reward, r) - } - statedb.AddBalance(header.Coinbase, reward) -} diff --git a/core/types.go b/core/types.go index 7fd658979c..1cfbbab29b 100644 --- a/core/types.go +++ b/core/types.go @@ -24,31 +24,17 @@ import ( "github.com/ethereum/go-ethereum/core/vm" ) -// Validator is an interface which defines the standard for block validation. +// Validator is an interface which defines the standard for block validation. It +// is only responsible for validating block contents, as the header validation is +// done by the specific consensus engines. // -// The validator is responsible for validating incoming block or, if desired, -// validates headers for fast validation. -// -// ValidateBlock validates the given block and should return an error if it -// failed to do so and should be used for "full" validation. -// -// ValidateHeader validates the given header and parent and returns an error -// if it failed to do so. -// -// ValidateState validates the given statedb and optionally the receipts and -// gas used. The implementer should decide what to do with the given input. type Validator interface { - HeaderValidator - ValidateBlock(block *types.Block) error - ValidateState(block, parent *types.Block, state *state.StateDB, receipts types.Receipts, usedGas *big.Int) error -} + // ValidateBody validates the given block's content. + ValidateBody(block *types.Block) error -// HeaderValidator is an interface for validating headers only -// -// ValidateHeader validates the given header and parent and returns an error -// if it failed to do so. -type HeaderValidator interface { - ValidateHeader(header, parent *types.Header, checkPow bool) error + // ValidateState validates the given statedb and optionally the receipts and + // gas used. + ValidateState(block, parent *types.Block, state *state.StateDB, receipts types.Receipts, usedGas *big.Int) error } // Processor is an interface for processing blocks using a given initial state. diff --git a/core/types/block.go b/core/types/block.go index b699ba6862..278594d506 100644 --- a/core/types/block.go +++ b/core/types/block.go @@ -348,12 +348,11 @@ func CalcUncleHash(uncles []*Header) common.Hash { return rlpHash(uncles) } -// WithMiningResult returns a new block with the data from b -// where nonce and mix digest are set to the provided values. -func (b *Block) WithMiningResult(nonce BlockNonce, mixDigest common.Hash) *Block { - cpy := *b.header - cpy.Nonce = nonce - cpy.MixDigest = mixDigest +// WithSeal returns a new block with the data from b but the header replaced with +// the sealed one. +func (b *Block) WithSeal(header *Header) *Block { + cpy := *header + return &Block{ header: &cpy, transactions: b.transactions, diff --git a/eth/api.go b/eth/api.go index b64153fd72..58ae27df23 100644 --- a/eth/api.go +++ b/eth/api.go @@ -26,7 +26,6 @@ import ( "io/ioutil" "math/big" "os" - "runtime" "strings" "time" @@ -37,6 +36,7 @@ import ( "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/internal/ethapi" + "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" @@ -56,18 +56,18 @@ func NewPublicEthereumAPI(e *Ethereum) *PublicEthereumAPI { } // Etherbase is the address that mining rewards will be send to -func (s *PublicEthereumAPI) Etherbase() (common.Address, error) { - return s.e.Etherbase() +func (api *PublicEthereumAPI) Etherbase() (common.Address, error) { + return api.e.Etherbase() } // Coinbase is the address that mining rewards will be send to (alias for Etherbase) -func (s *PublicEthereumAPI) Coinbase() (common.Address, error) { - return s.Etherbase() +func (api *PublicEthereumAPI) Coinbase() (common.Address, error) { + return api.Etherbase() } // Hashrate returns the POW hashrate -func (s *PublicEthereumAPI) Hashrate() hexutil.Uint64 { - return hexutil.Uint64(s.e.Miner().HashRate()) +func (api *PublicEthereumAPI) Hashrate() hexutil.Uint64 { + return hexutil.Uint64(api.e.Miner().HashRate()) } // PublicMinerAPI provides an API to control the miner. @@ -79,34 +79,34 @@ type PublicMinerAPI struct { // NewPublicMinerAPI create a new PublicMinerAPI instance. func NewPublicMinerAPI(e *Ethereum) *PublicMinerAPI { - agent := miner.NewRemoteAgent(e.Pow()) + agent := miner.NewRemoteAgent(e.BlockChain(), e.Engine()) e.Miner().Register(agent) return &PublicMinerAPI{e, agent} } // Mining returns an indication if this node is currently mining. -func (s *PublicMinerAPI) Mining() bool { - return s.e.IsMining() +func (api *PublicMinerAPI) Mining() bool { + return api.e.IsMining() } // SubmitWork can be used by external miner to submit their POW solution. It returns an indication if the work was // accepted. Note, this is not an indication if the provided work was valid! -func (s *PublicMinerAPI) SubmitWork(nonce types.BlockNonce, solution, digest common.Hash) bool { - return s.agent.SubmitWork(nonce, digest, solution) +func (api *PublicMinerAPI) SubmitWork(nonce types.BlockNonce, solution, digest common.Hash) bool { + return api.agent.SubmitWork(nonce, digest, solution) } // GetWork returns a work package for external miner. The work package consists of 3 strings // result[0], 32 bytes hex encoded current block header pow-hash // result[1], 32 bytes hex encoded seed hash used for DAG // result[2], 32 bytes hex encoded boundary condition ("target"), 2^256/difficulty -func (s *PublicMinerAPI) GetWork() ([3]string, error) { - if !s.e.IsMining() { - if err := s.e.StartMining(0); err != nil { +func (api *PublicMinerAPI) GetWork() ([3]string, error) { + if !api.e.IsMining() { + if err := api.e.StartMining(); err != nil { return [3]string{}, err } } - work, err := s.agent.GetWork() + work, err := api.agent.GetWork() if err != nil { return work, fmt.Errorf("mining not ready: %v", err) } @@ -116,8 +116,8 @@ func (s *PublicMinerAPI) GetWork() ([3]string, error) { // SubmitHashrate can be used for remote miners to submit their hash rate. This enables the node to report the combined // hash rate of all miners which submit work through this node. It accepts the miner hash rate and an identifier which // must be unique between nodes. -func (s *PublicMinerAPI) SubmitHashrate(hashrate hexutil.Uint64, id common.Hash) bool { - s.agent.SubmitHashrate(id, uint64(hashrate)) +func (api *PublicMinerAPI) SubmitHashrate(hashrate hexutil.Uint64, id common.Hash) bool { + api.agent.SubmitHashrate(id, uint64(hashrate)) return true } @@ -132,47 +132,59 @@ func NewPrivateMinerAPI(e *Ethereum) *PrivateMinerAPI { return &PrivateMinerAPI{e: e} } -// Start the miner with the given number of threads. If threads is nil the number of -// workers started is equal to the number of logical CPU's that are usable by this process. -func (s *PrivateMinerAPI) Start(threads *int) (bool, error) { - var err error - if threads == nil { - err = s.e.StartMining(runtime.NumCPU()) - } else { - err = s.e.StartMining(*threads) +// Start the miner with the given number of threads. If threads is nil the number +// of workers started is equal to the number of logical CPUs that are usable by +// this process. If mining is already running, this method adjust the number of +// threads allowed to use. +func (api *PrivateMinerAPI) Start(threads *int) error { + // Set the number of threads if the seal engine supports it + if threads != nil { + type threaded interface { + SetThreads(threads int) + } + if th, ok := api.e.engine.(threaded); ok { + log.Info("Updated mining threads", "threads", *threads) + th.SetThreads(*threads) + } else { + log.Warn("Current seal engine isn't threaded") + } } - return err == nil, err + // Start the miner and return + if !api.e.IsMining() { + return api.e.StartMining() + } + return nil } // Stop the miner -func (s *PrivateMinerAPI) Stop() bool { - s.e.StopMining() +func (api *PrivateMinerAPI) Stop() bool { + api.e.StopMining() return true } // SetExtra sets the extra data string that is included when this miner mines a block. -func (s *PrivateMinerAPI) SetExtra(extra string) (bool, error) { - if err := s.e.Miner().SetExtra([]byte(extra)); err != nil { +func (api *PrivateMinerAPI) SetExtra(extra string) (bool, error) { + if err := api.e.Miner().SetExtra([]byte(extra)); err != nil { return false, err } return true, nil } // SetGasPrice sets the minimum accepted gas price for the miner. -func (s *PrivateMinerAPI) SetGasPrice(gasPrice hexutil.Big) bool { - s.e.Miner().SetGasPrice((*big.Int)(&gasPrice)) +func (api *PrivateMinerAPI) SetGasPrice(gasPrice hexutil.Big) bool { + api.e.Miner().SetGasPrice((*big.Int)(&gasPrice)) return true } // SetEtherbase sets the etherbase of the miner -func (s *PrivateMinerAPI) SetEtherbase(etherbase common.Address) bool { - s.e.SetEtherbase(etherbase) +func (api *PrivateMinerAPI) SetEtherbase(etherbase common.Address) bool { + api.e.SetEtherbase(etherbase) return true } // GetHashrate returns the current hashrate of the miner. -func (s *PrivateMinerAPI) GetHashrate() uint64 { - return uint64(s.e.miner.HashRate()) +func (api *PrivateMinerAPI) GetHashrate() uint64 { + return uint64(api.e.miner.HashRate()) } // PrivateAdminAPI is the collection of Etheruem full node-related APIs @@ -321,7 +333,7 @@ type TraceArgs struct { Timeout *string } -// TraceBlock processes the given block's RLP but does not import the block in to +// TraceBlock processes the given block'api RLP but does not import the block in to // the chain. func (api *PrivateDebugAPI) TraceBlock(blockRlp []byte, config *vm.LogConfig) BlockTraceResult { var block types.Block @@ -338,7 +350,7 @@ func (api *PrivateDebugAPI) TraceBlock(blockRlp []byte, config *vm.LogConfig) Bl } } -// TraceBlockFromFile loads the block's RLP from the given file name and attempts to +// TraceBlockFromFile loads the block'api RLP from the given file name and attempts to // process it but does not import the block in to the chain. func (api *PrivateDebugAPI) TraceBlockFromFile(file string, config *vm.LogConfig) BlockTraceResult { blockRlp, err := ioutil.ReadFile(file) @@ -395,8 +407,7 @@ func (api *PrivateDebugAPI) traceBlock(block *types.Block, logConfig *vm.LogConf Debug: true, Tracer: structLogger, } - - if err := core.ValidateHeader(api.config, blockchain.AuxValidator(), block.Header(), blockchain.GetHeader(block.ParentHash(), block.NumberU64()-1), true, false); err != nil { + if err := api.eth.engine.VerifyHeader(blockchain, block.Header(), true); err != nil { return false, structLogger.StructLogs(), err } statedb, err := blockchain.StateAt(blockchain.GetBlock(block.ParentHash(), block.NumberU64()-1).Root()) diff --git a/eth/backend.go b/eth/backend.go index b8df98976d..af1d46a2cc 100644 --- a/eth/backend.go +++ b/eth/backend.go @@ -22,10 +22,11 @@ import ( "math/big" "regexp" "sync" - "time" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -40,18 +41,9 @@ import ( "github.com/ethereum/go-ethereum/node" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rpc" ) -const ( - epochLength = 30000 - ethashRevision = 23 - - autoDAGcheckInterval = 10 * time.Hour - autoDAGepochHeight = epochLength / 2 -) - var ( datadirInUseErrnos = map[uint]bool{11: true, 32: true, 35: true} portInUseErrRE = regexp.MustCompile("address already in use") @@ -124,7 +116,7 @@ type Ethereum struct { chainDb ethdb.Database // Block chain database eventMux *event.TypeMux - pow pow.PoW + engine consensus.Engine accountManager *accounts.Manager ApiBackend *EthApiBackend @@ -163,7 +155,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { chainConfig: chainConfig, eventMux: ctx.EventMux, accountManager: ctx.AccountManager, - pow: CreatePoW(ctx, config), + engine: CreateConsensusEngine(ctx, config, chainConfig, chainDb), shutdownChan: make(chan bool), stopDbUpgrade: stopDbUpgrade, netVersionId: config.NetworkId, @@ -186,7 +178,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { } vmConfig := vm.Config{EnablePreimageRecording: config.EnablePreimageRecording} - eth.blockchain, err = core.NewBlockChain(chainDb, eth.chainConfig, eth.pow, eth.eventMux, vmConfig) + eth.blockchain, err = core.NewBlockChain(chainDb, eth.chainConfig, eth.engine, eth.eventMux, vmConfig) if err != nil { return nil, err } @@ -211,10 +203,11 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { } } - if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.FastSync, config.NetworkId, maxPeers, eth.eventMux, eth.txPool, eth.pow, eth.blockchain, chainDb); err != nil { + if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.FastSync, config.NetworkId, maxPeers, eth.eventMux, eth.txPool, eth.engine, eth.blockchain, chainDb); err != nil { return nil, err } - eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.pow) + + eth.miner = miner.New(eth, eth.chainConfig, eth.EventMux(), eth.engine) eth.miner.SetGasPrice(config.GasPrice) eth.miner.SetExtra(config.ExtraData) @@ -241,20 +234,20 @@ func CreateDB(ctx *node.ServiceContext, config *Config, name string) (ethdb.Data return db, err } -// CreatePoW creates the required type of PoW instance for an Ethereum service -func CreatePoW(ctx *node.ServiceContext, config *Config) pow.PoW { +// CreateConsensusEngine creates the required type of consensus engine instance for an Ethereum service +func CreateConsensusEngine(ctx *node.ServiceContext, config *Config, chainConfig *params.ChainConfig, db ethdb.Database) consensus.Engine { switch { case config.PowFake: log.Warn("Ethash used in fake mode") - return pow.FakePow{} + return ethash.NewFaker() case config.PowTest: log.Warn("Ethash used in test mode") - return pow.NewTestEthash() + return ethash.NewTester() case config.PowShared: log.Warn("Ethash used in shared mode") - return pow.NewSharedEthash() + return ethash.NewShared() default: - return pow.NewFullEthash(ctx.ResolvePath(config.EthashCacheDir), config.EthashCachesInMem, config.EthashCachesOnDisk, + return ethash.New(ctx.ResolvePath(config.EthashCacheDir), config.EthashCachesInMem, config.EthashCachesOnDisk, config.EthashDatasetDir, config.EthashDatasetsInMem, config.EthashDatasetsOnDisk) } } @@ -262,7 +255,13 @@ func CreatePoW(ctx *node.ServiceContext, config *Config) pow.PoW { // APIs returns the collection of RPC services the ethereum package offers. // NOTE, some of these services probably need to be moved to somewhere else. func (s *Ethereum) APIs() []rpc.API { - return append(ethapi.GetAPIs(s.ApiBackend, s.solcPath), []rpc.API{ + apis := ethapi.GetAPIs(s.ApiBackend, s.solcPath) + + // Append any APIs exposed explicitly by the consensus engine + apis = append(apis, s.engine.APIs(s.BlockChain())...) + + // Append all the local APIs and return + return append(apis, []rpc.API{ { Namespace: "eth", Version: "1.0", @@ -332,13 +331,13 @@ func (self *Ethereum) SetEtherbase(etherbase common.Address) { self.miner.SetEtherbase(etherbase) } -func (s *Ethereum) StartMining(threads int) error { +func (s *Ethereum) StartMining() error { eb, err := s.Etherbase() if err != nil { log.Error("Cannot start mining without etherbase", "err", err) return fmt.Errorf("etherbase missing: %v", err) } - go s.miner.Start(eb, threads) + go s.miner.Start(eb) return nil } @@ -350,7 +349,7 @@ func (s *Ethereum) AccountManager() *accounts.Manager { return s.accountManager func (s *Ethereum) BlockChain() *core.BlockChain { return s.blockchain } func (s *Ethereum) TxPool() *core.TxPool { return s.txPool } func (s *Ethereum) EventMux() *event.TypeMux { return s.eventMux } -func (s *Ethereum) Pow() pow.PoW { return s.pow } +func (s *Ethereum) Engine() consensus.Engine { return s.engine } func (s *Ethereum) ChainDb() ethdb.Database { return s.chainDb } func (s *Ethereum) IsListening() bool { return true } // Always listening func (s *Ethereum) EthVersion() int { return int(s.protocolManager.SubProtocols[0].Version) } diff --git a/eth/fetcher/fetcher.go b/eth/fetcher/fetcher.go index d82f4f3e6c..64a9910696 100644 --- a/eth/fetcher/fetcher.go +++ b/eth/fetcher/fetcher.go @@ -52,8 +52,8 @@ type headerRequesterFn func(common.Hash) error // bodyRequesterFn is a callback type for sending a body retrieval request. type bodyRequesterFn func([]common.Hash) error -// blockValidatorFn is a callback type to verify a block's header for fast propagation. -type blockValidatorFn func(block *types.Block, parent *types.Block) error +// headerVerifierFn is a callback type to verify a block's header for fast propagation. +type headerVerifierFn func(header *types.Header) error // blockBroadcasterFn is a callback type for broadcasting a block to connected peers. type blockBroadcasterFn func(block *types.Block, propagate bool) @@ -129,7 +129,7 @@ type Fetcher struct { // Callbacks getBlock blockRetrievalFn // Retrieves a block from the local chain - validateBlock blockValidatorFn // Checks if a block's headers have a valid proof of work + verifyHeader headerVerifierFn // Checks if a block's headers have a valid proof of work broadcastBlock blockBroadcasterFn // Broadcasts a block to connected peers chainHeight chainHeightFn // Retrieves the current chain's height insertChain chainInsertFn // Injects a batch of blocks into the chain @@ -144,7 +144,7 @@ type Fetcher struct { } // New creates a block fetcher to retrieve blocks based on hash announcements. -func New(getBlock blockRetrievalFn, validateBlock blockValidatorFn, broadcastBlock blockBroadcasterFn, chainHeight chainHeightFn, insertChain chainInsertFn, dropPeer peerDropFn) *Fetcher { +func New(getBlock blockRetrievalFn, verifyHeader headerVerifierFn, broadcastBlock blockBroadcasterFn, chainHeight chainHeightFn, insertChain chainInsertFn, dropPeer peerDropFn) *Fetcher { return &Fetcher{ notify: make(chan *announce), inject: make(chan *inject), @@ -162,7 +162,7 @@ func New(getBlock blockRetrievalFn, validateBlock blockValidatorFn, broadcastBlo queues: make(map[string]int), queued: make(map[common.Hash]*inject), getBlock: getBlock, - validateBlock: validateBlock, + verifyHeader: verifyHeader, broadcastBlock: broadcastBlock, chainHeight: chainHeight, insertChain: insertChain, @@ -648,7 +648,7 @@ func (f *Fetcher) insert(peer string, block *types.Block) { return } // Quickly validate the header and propagate the block if it passes - switch err := f.validateBlock(block, parent); err { + switch err := f.verifyHeader(block.Header()); err { case nil: // All ok, quickly propagate to our peers propBroadcastOutTimer.UpdateSince(block.ReceivedAt) diff --git a/eth/fetcher/fetcher_test.go b/eth/fetcher/fetcher_test.go index 7a94241c66..85d2f8645e 100644 --- a/eth/fetcher/fetcher_test.go +++ b/eth/fetcher/fetcher_test.go @@ -91,7 +91,7 @@ func newTester() *fetcherTester { blocks: map[common.Hash]*types.Block{genesis.Hash(): genesis}, drops: make(map[string]bool), } - tester.fetcher = New(tester.getBlock, tester.verifyBlock, tester.broadcastBlock, tester.chainHeight, tester.insertChain, tester.dropPeer) + tester.fetcher = New(tester.getBlock, tester.verifyHeader, tester.broadcastBlock, tester.chainHeight, tester.insertChain, tester.dropPeer) tester.fetcher.Start() return tester @@ -105,8 +105,8 @@ func (f *fetcherTester) getBlock(hash common.Hash) *types.Block { return f.blocks[hash] } -// verifyBlock is a nop placeholder for the block header verification. -func (f *fetcherTester) verifyBlock(block *types.Block, parent *types.Block) error { +// verifyHeader is a nop placeholder for the block header verification. +func (f *fetcherTester) verifyHeader(header *types.Header) error { return nil } diff --git a/eth/handler.go b/eth/handler.go index ade8f77192..4452720603 100644 --- a/eth/handler.go +++ b/eth/handler.go @@ -27,6 +27,8 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/consensus/misc" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/eth/downloader" @@ -37,7 +39,6 @@ import ( "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" ) @@ -97,7 +98,7 @@ type ProtocolManager struct { // NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable // with the ethereum network. -func NewProtocolManager(config *params.ChainConfig, fastSync bool, networkId int, maxPeers int, mux *event.TypeMux, txpool txPool, pow pow.PoW, blockchain *core.BlockChain, chaindb ethdb.Database) (*ProtocolManager, error) { +func NewProtocolManager(config *params.ChainConfig, fastSync bool, networkId int, maxPeers int, mux *event.TypeMux, txpool txPool, engine consensus.Engine, blockchain *core.BlockChain, chaindb ethdb.Database) (*ProtocolManager, error) { // Create the protocol manager with the base fields manager := &ProtocolManager{ networkId: networkId, @@ -165,8 +166,8 @@ func NewProtocolManager(config *params.ChainConfig, fastSync bool, networkId int blockchain.GetTdByHash, blockchain.InsertHeaderChain, manager.insertChain, blockchain.InsertReceiptChain, blockchain.Rollback, manager.removePeer) - validator := func(block *types.Block, parent *types.Block) error { - return core.ValidateHeader(config, pow, block.Header(), parent.Header(), true, false) + validator := func(header *types.Header) error { + return engine.VerifyHeader(blockchain, header, true) } heighter := func() uint64 { return blockchain.CurrentBlock().NumberU64() @@ -448,7 +449,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error { p.forkDrop = nil // Validate the header and either drop the peer or continue - if err := core.ValidateDAOHeaderExtraData(pm.chainconfig, headers[0]); err != nil { + if err := misc.VerifyDAOHeaderExtraData(pm.chainconfig, headers[0]); err != nil { p.Log().Debug("Verified to be on the other side of the DAO fork, dropping") return err } diff --git a/eth/handler_test.go b/eth/handler_test.go index 31435b331d..f85d730b67 100644 --- a/eth/handler_test.go +++ b/eth/handler_test.go @@ -24,6 +24,7 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -34,7 +35,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) var bigTxGas = new(big.Int).SetUint64(params.TxGas) @@ -469,7 +469,7 @@ func testDAOChallenge(t *testing.T, localForked, remoteForked bool, timeout bool // Create a DAO aware protocol manager var ( evmux = new(event.TypeMux) - pow = new(pow.FakePow) + pow = ethash.NewFaker() db, _ = ethdb.NewMemDatabase() config = ¶ms.ChainConfig{DAOForkBlock: big.NewInt(1), DAOForkSupport: localForked} gspec = &core.Genesis{Config: config} diff --git a/eth/helper_test.go b/eth/helper_test.go index e67b496915..a8c538e6ce 100644 --- a/eth/helper_test.go +++ b/eth/helper_test.go @@ -28,6 +28,7 @@ import ( "testing" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -37,7 +38,6 @@ import ( "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) var ( @@ -50,22 +50,22 @@ var ( // channels for different events. func newTestProtocolManager(fastSync bool, blocks int, generator func(int, *core.BlockGen), newtx chan<- []*types.Transaction) (*ProtocolManager, error) { var ( - evmux = new(event.TypeMux) - pow = new(pow.FakePow) - db, _ = ethdb.NewMemDatabase() - gspec = &core.Genesis{ + evmux = new(event.TypeMux) + engine = ethash.NewFaker() + db, _ = ethdb.NewMemDatabase() + gspec = &core.Genesis{ Config: params.TestChainConfig, Alloc: core.GenesisAlloc{testBank: {Balance: big.NewInt(1000000)}}, } genesis = gspec.MustCommit(db) - blockchain, _ = core.NewBlockChain(db, gspec.Config, pow, evmux, vm.Config{}) + blockchain, _ = core.NewBlockChain(db, gspec.Config, engine, evmux, vm.Config{}) ) chain, _ := core.GenerateChain(gspec.Config, genesis, db, blocks, generator) if _, err := blockchain.InsertChain(chain); err != nil { panic(err) } - pm, err := NewProtocolManager(gspec.Config, fastSync, NetworkId, 1000, evmux, &testTxPool{added: newtx}, pow, blockchain, db) + pm, err := NewProtocolManager(gspec.Config, fastSync, NetworkId, 1000, evmux, &testTxPool{added: newtx}, engine, blockchain, db) if err != nil { return nil, err } diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go index ccb7ec80b1..987e144198 100644 --- a/internal/ethapi/api.go +++ b/internal/ethapi/api.go @@ -31,6 +31,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -39,7 +40,6 @@ import ( "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/rpc" "github.com/syndtr/goleveldb/leveldb" @@ -1378,7 +1378,7 @@ func (api *PublicDebugAPI) SeedHash(ctx context.Context, number uint64) (string, if block == nil { return "", fmt.Errorf("block #%d not found", number) } - return fmt.Sprintf("0x%x", pow.EthashSeedHash(number)), nil + return fmt.Sprintf("0x%x", ethash.SeedHash(number)), nil } // PrivateDebugAPI is the collection of Etheruem APIs exposed over the private diff --git a/les/backend.go b/les/backend.go index d656cf41f5..bb08efd915 100644 --- a/les/backend.go +++ b/les/backend.go @@ -25,6 +25,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/compiler" "github.com/ethereum/go-ethereum/common/hexutil" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/eth" @@ -39,7 +40,6 @@ import ( "github.com/ethereum/go-ethereum/node" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" rpc "github.com/ethereum/go-ethereum/rpc" ) @@ -59,7 +59,7 @@ type LightEthereum struct { ApiBackend *LesApiBackend eventMux *event.TypeMux - pow pow.PoW + engine consensus.Engine accountManager *accounts.Manager solcPath string solc *compiler.Solidity @@ -88,14 +88,12 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { chainConfig: chainConfig, eventMux: ctx.EventMux, accountManager: ctx.AccountManager, - pow: eth.CreatePoW(ctx, config), + engine: eth.CreateConsensusEngine(ctx, config, chainConfig, chainDb), shutdownChan: make(chan bool), netVersionId: config.NetworkId, solcPath: config.SolcPath, } - - eth.blockchain, err = light.NewLightChain(odr, eth.chainConfig, eth.pow, eth.eventMux) - if err != nil { + if eth.blockchain, err = light.NewLightChain(odr, eth.chainConfig, eth.engine, eth.eventMux); err != nil { return nil, err } // Rewind the chain in case of an incompatible config upgrade. @@ -106,7 +104,7 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) { } eth.txPool = light.NewTxPool(eth.chainConfig, eth.eventMux, eth.blockchain, eth.relay) - if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.LightMode, config.NetworkId, eth.eventMux, eth.pow, eth.blockchain, nil, chainDb, odr, relay); err != nil { + if eth.protocolManager, err = NewProtocolManager(eth.chainConfig, config.LightMode, config.NetworkId, eth.eventMux, eth.engine, eth.blockchain, nil, chainDb, odr, relay); err != nil { return nil, err } relay.ps = eth.protocolManager.peers diff --git a/les/handler.go b/les/handler.go index ece2060ee8..fbb9e99062 100644 --- a/les/handler.go +++ b/les/handler.go @@ -27,6 +27,7 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -39,7 +40,6 @@ import ( "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/p2p/discv5" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" ) @@ -128,7 +128,7 @@ type ProtocolManager struct { // NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable // with the ethereum network. -func NewProtocolManager(chainConfig *params.ChainConfig, lightSync bool, networkId int, mux *event.TypeMux, pow pow.PoW, blockchain BlockChain, txpool txPool, chainDb ethdb.Database, odr *LesOdr, txrelay *LesTxRelay) (*ProtocolManager, error) { +func NewProtocolManager(chainConfig *params.ChainConfig, lightSync bool, networkId int, mux *event.TypeMux, engine consensus.Engine, blockchain BlockChain, txpool txPool, chainDb ethdb.Database, odr *LesOdr, txrelay *LesTxRelay) (*ProtocolManager, error) { // Create the protocol manager with the base fields manager := &ProtocolManager{ lightSync: lightSync, diff --git a/les/helper_test.go b/les/helper_test.go index f37bec80e1..7e442c131b 100644 --- a/les/helper_test.go +++ b/les/helper_test.go @@ -28,6 +28,7 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" @@ -39,7 +40,6 @@ import ( "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p/discover" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) var ( @@ -134,10 +134,10 @@ func testRCL() RequestCostList { // channels for different events. func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *core.BlockGen)) (*ProtocolManager, ethdb.Database, *LesOdr, error) { var ( - evmux = new(event.TypeMux) - pow = new(pow.FakePow) - db, _ = ethdb.NewMemDatabase() - gspec = core.Genesis{ + evmux = new(event.TypeMux) + engine = ethash.NewFaker() + db, _ = ethdb.NewMemDatabase() + gspec = core.Genesis{ Config: params.TestChainConfig, Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}, } @@ -148,9 +148,9 @@ func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *cor if lightSync { odr = NewLesOdr(db) - chain, _ = light.NewLightChain(odr, gspec.Config, pow, evmux) + chain, _ = light.NewLightChain(odr, gspec.Config, engine, evmux) } else { - blockchain, _ := core.NewBlockChain(db, gspec.Config, pow, evmux, vm.Config{}) + blockchain, _ := core.NewBlockChain(db, gspec.Config, engine, evmux, vm.Config{}) gchain, _ := core.GenerateChain(gspec.Config, genesis, db, blocks, generator) if _, err := blockchain.InsertChain(gchain); err != nil { panic(err) @@ -158,7 +158,7 @@ func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *cor chain = blockchain } - pm, err := NewProtocolManager(gspec.Config, lightSync, NetworkId, evmux, pow, chain, nil, db, odr, nil) + pm, err := NewProtocolManager(gspec.Config, lightSync, NetworkId, evmux, engine, chain, nil, db, odr, nil) if err != nil { return nil, nil, nil, err } diff --git a/les/server.go b/les/server.go index 5957add367..22fe59b7ac 100644 --- a/les/server.go +++ b/les/server.go @@ -45,7 +45,7 @@ type LesServer struct { } func NewLesServer(eth *eth.Ethereum, config *eth.Config) (*LesServer, error) { - pm, err := NewProtocolManager(eth.BlockChain().Config(), false, config.NetworkId, eth.EventMux(), eth.Pow(), eth.BlockChain(), eth.TxPool(), eth.ChainDb(), nil, nil) + pm, err := NewProtocolManager(eth.BlockChain().Config(), false, config.NetworkId, eth.EventMux(), eth.Engine(), eth.BlockChain(), eth.TxPool(), eth.ChainDb(), nil, nil) if err != nil { return nil, err } diff --git a/light/lightchain.go b/light/lightchain.go index 98fb024f0b..4073e39e59 100644 --- a/light/lightchain.go +++ b/light/lightchain.go @@ -24,13 +24,13 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/hashicorp/golang-lru" ) @@ -64,14 +64,13 @@ type LightChain struct { procInterrupt int32 // interrupt signaler for block processing wg sync.WaitGroup - pow pow.PoW - validator core.HeaderValidator + engine consensus.Engine } // NewLightChain returns a fully initialised light chain using information // available in the database. It initialises the default Ethereum header // validator. -func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux *event.TypeMux) (*LightChain, error) { +func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.Engine, mux *event.TypeMux) (*LightChain, error) { bodyCache, _ := lru.New(bodyCacheLimit) bodyRLPCache, _ := lru.New(bodyCacheLimit) blockCache, _ := lru.New(blockCacheLimit) @@ -84,21 +83,17 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, pow pow.PoW, mux bodyCache: bodyCache, bodyRLPCache: bodyRLPCache, blockCache: blockCache, - pow: pow, + engine: engine, } - var err error - bc.hc, err = core.NewHeaderChain(odr.Database(), config, bc.Validator, bc.getProcInterrupt) - bc.SetValidator(core.NewHeaderValidator(config, bc.hc, pow)) + bc.hc, err = core.NewHeaderChain(odr.Database(), config, bc.engine, bc.getProcInterrupt) if err != nil { return nil, err } - bc.genesisBlock, _ = bc.GetBlockByNumber(NoOdr, 0) if bc.genesisBlock == nil { return nil, core.ErrNoGenesis } - if bc.genesisBlock.Hash() == params.MainNetGenesisHash { // add trusted CHT WriteTrustedCht(bc.chainDb, TrustedCht{Number: 805, Root: common.HexToHash("85e4286fe0a730390245c49de8476977afdae0eb5530b277f62a52b12313d50f")}) @@ -145,9 +140,6 @@ func (self *LightChain) loadLastState() error { headerTd := self.GetTd(header.Hash(), header.Number.Uint64()) log.Info("Loaded most recent local header", "number", header.Number, "hash", header.Hash(), "td", headerTd) - // Try to be smart and issue a pow verification for the head to pre-generate caches - go self.pow.Verify(types.NewBlockWithHeader(header)) - return nil } @@ -188,20 +180,6 @@ func (self *LightChain) Status() (td *big.Int, currentBlock common.Hash, genesis return self.GetTd(hash, header.Number.Uint64()), hash, self.genesisBlock.Hash() } -// SetValidator sets the validator which is used to validate incoming headers. -func (self *LightChain) SetValidator(validator core.HeaderValidator) { - self.procmu.Lock() - defer self.procmu.Unlock() - self.validator = validator -} - -// Validator returns the current header validator. -func (self *LightChain) Validator() core.HeaderValidator { - self.procmu.RLock() - defer self.procmu.RUnlock() - return self.validator -} - // State returns a new mutable state based on the current HEAD block. func (self *LightChain) State() *LightState { return NewLightState(StateTrieID(self.hc.CurrentHeader()), self.odr) diff --git a/light/lightchain_test.go b/light/lightchain_test.go index e9236f1fd2..41010cf577 100644 --- a/light/lightchain_test.go +++ b/light/lightchain_test.go @@ -23,12 +23,12 @@ import ( "testing" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) // So we can deterministically seed different blockchains @@ -49,18 +49,15 @@ func makeHeaderChain(parent *types.Header, n int, db ethdb.Database, seed int) [ return headers } -func testChainConfig() *params.ChainConfig { - return ¶ms.ChainConfig{HomesteadBlock: big.NewInt(0)} -} - // newCanonical creates a chain database, and injects a deterministic canonical // chain. Depending on the full flag, if creates either a full block chain or a // header only chain. func newCanonical(n int) (ethdb.Database, *LightChain, error) { db, _ := ethdb.NewMemDatabase() - gspec := core.Genesis{Config: testChainConfig()} + gspec := core.Genesis{Config: params.TestChainConfig} genesis := gspec.MustCommit(db) - blockchain, _ := NewLightChain(&dummyOdr{db: db}, gspec.Config, pow.FakePow{}, new(event.TypeMux)) + blockchain, _ := NewLightChain(&dummyOdr{db: db}, gspec.Config, ethash.NewFaker(), new(event.TypeMux)) + // Create and inject the requested chain if n == 0 { return db, blockchain, nil @@ -76,14 +73,13 @@ func newTestLightChain() *LightChain { db, _ := ethdb.NewMemDatabase() gspec := &core.Genesis{ Difficulty: big.NewInt(1), - Config: testChainConfig(), + Config: params.TestChainConfig, } gspec.MustCommit(db) - lc, err := NewLightChain(&dummyOdr{db: db}, gspec.Config, pow.NewTestEthash(), new(event.TypeMux)) + lc, err := NewLightChain(&dummyOdr{db: db}, gspec.Config, ethash.NewFullFaker(), new(event.TypeMux)) if err != nil { panic(err) } - lc.SetValidator(bproc{}) return lc } @@ -130,17 +126,17 @@ func printChain(bc *LightChain) { // testHeaderChainImport tries to process a chain of header, writing them into // the database if successful. -func testHeaderChainImport(chain []*types.Header, LightChain *LightChain) error { +func testHeaderChainImport(chain []*types.Header, lightchain *LightChain) error { for _, header := range chain { // Try and validate the header - if err := LightChain.Validator().ValidateHeader(header, LightChain.GetHeaderByHash(header.ParentHash), false); err != nil { + if err := lightchain.engine.VerifyHeader(lightchain.hc, header, true); err != nil { return err } // Manually insert the header into the database, but don't reorganize (allows subsequent testing) - LightChain.mu.Lock() - core.WriteTd(LightChain.chainDb, header.Hash(), header.Number.Uint64(), new(big.Int).Add(header.Difficulty, LightChain.GetTdByHash(header.ParentHash))) - core.WriteHeader(LightChain.chainDb, header) - LightChain.mu.Unlock() + lightchain.mu.Lock() + core.WriteTd(lightchain.chainDb, header.Hash(), header.Number.Uint64(), new(big.Int).Add(header.Difficulty, lightchain.GetTdByHash(header.ParentHash))) + core.WriteHeader(lightchain.chainDb, header) + lightchain.mu.Unlock() } return nil } @@ -257,10 +253,6 @@ func TestBrokenHeaderChain(t *testing.T) { } } -type bproc struct{} - -func (bproc) ValidateHeader(*types.Header, *types.Header, bool) error { return nil } - func makeHeaderChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Header { var chain []*types.Header for i, difficulty := range d { @@ -359,7 +351,7 @@ func TestReorgBadHeaderHashes(t *testing.T) { defer func() { delete(core.BadHashes, headers[3].Hash()) }() // Create a new LightChain and check that it rolled back the state. - ncm, err := NewLightChain(&dummyOdr{db: bc.chainDb}, testChainConfig(), pow.FakePow{}, new(event.TypeMux)) + ncm, err := NewLightChain(&dummyOdr{db: bc.chainDb}, params.TestChainConfig, ethash.NewFaker(), new(event.TypeMux)) if err != nil { t.Fatalf("failed to create new chain manager: %v", err) } diff --git a/light/odr_test.go b/light/odr_test.go index 37d9999941..ca33db2463 100644 --- a/light/odr_test.go +++ b/light/odr_test.go @@ -26,6 +26,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/math" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -34,7 +35,6 @@ import ( "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" ) @@ -248,7 +248,6 @@ func testChainGen(i int, block *core.BlockGen) { func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { var ( evmux = new(event.TypeMux) - pow = new(pow.FakePow) sdb, _ = ethdb.NewMemDatabase() ldb, _ = ethdb.NewMemDatabase() gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}} @@ -256,16 +255,14 @@ func testChainOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) { ) gspec.MustCommit(ldb) // Assemble the test environment - blockchain, _ := core.NewBlockChain(sdb, testChainConfig(), pow, evmux, vm.Config{}) - chainConfig := ¶ms.ChainConfig{HomesteadBlock: new(big.Int)} - gchain, _ := core.GenerateChain(chainConfig, genesis, sdb, 4, testChainGen) + blockchain, _ := core.NewBlockChain(sdb, params.TestChainConfig, ethash.NewFullFaker(), evmux, vm.Config{}) + gchain, _ := core.GenerateChain(params.TestChainConfig, genesis, sdb, 4, testChainGen) if _, err := blockchain.InsertChain(gchain); err != nil { panic(err) } odr := &testOdr{sdb: sdb, ldb: ldb} - lightchain, _ := NewLightChain(odr, testChainConfig(), pow, evmux) - lightchain.SetValidator(bproc{}) + lightchain, _ := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker(), evmux) headers := make([]*types.Header, len(gchain)) for i, block := range gchain { headers[i] = block.Header() diff --git a/light/txpool_test.go b/light/txpool_test.go index 2b5fa7116d..f23832a417 100644 --- a/light/txpool_test.go +++ b/light/txpool_test.go @@ -24,13 +24,13 @@ import ( "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/vm" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) type testTxRelay struct { @@ -83,7 +83,6 @@ func TestTxPool(t *testing.T) { var ( evmux = new(event.TypeMux) - pow = new(pow.FakePow) sdb, _ = ethdb.NewMemDatabase() ldb, _ = ethdb.NewMemDatabase() gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}} @@ -91,9 +90,8 @@ func TestTxPool(t *testing.T) { ) gspec.MustCommit(ldb) // Assemble the test environment - blockchain, _ := core.NewBlockChain(sdb, testChainConfig(), pow, evmux, vm.Config{}) - chainConfig := ¶ms.ChainConfig{HomesteadBlock: new(big.Int)} - gchain, _ := core.GenerateChain(chainConfig, genesis, sdb, poolTestBlocks, txPoolTestChainGen) + blockchain, _ := core.NewBlockChain(sdb, params.TestChainConfig, ethash.NewFullFaker(), evmux, vm.Config{}) + gchain, _ := core.GenerateChain(params.TestChainConfig, genesis, sdb, poolTestBlocks, txPoolTestChainGen) if _, err := blockchain.InsertChain(gchain); err != nil { panic(err) } @@ -104,10 +102,9 @@ func TestTxPool(t *testing.T) { discard: make(chan int, 1), mined: make(chan int, 1), } - lightchain, _ := NewLightChain(odr, testChainConfig(), pow, evmux) - lightchain.SetValidator(bproc{}) + lightchain, _ := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker(), evmux) txPermanent = 50 - pool := NewTxPool(testChainConfig(), evmux, lightchain, relay) + pool := NewTxPool(params.TestChainConfig, evmux, lightchain, relay) ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second) defer cancel() diff --git a/log/format.go b/log/format.go index e315b5237d..6c19c7a552 100644 --- a/log/format.go +++ b/log/format.go @@ -133,10 +133,10 @@ func TerminalFormat(usecolor bool) Format { } } // try to justify the log output for short messages - if len(r.Ctx) > 0 && len(r.Msg) < termMsgJust { - b.Write(bytes.Repeat([]byte{' '}, termMsgJust-len(r.Msg))) + length := utf8.RuneCountInString(r.Msg) + if len(r.Ctx) > 0 && length < termMsgJust { + b.Write(bytes.Repeat([]byte{' '}, termMsgJust-length)) } - // print the keys logfmt style logfmt(b, r.Ctx, color, true) return b.Bytes() diff --git a/miner/agent.go b/miner/agent.go index 3c407f20bb..855892a07d 100644 --- a/miner/agent.go +++ b/miner/agent.go @@ -17,56 +17,49 @@ package miner import ( - "fmt" "sync" "sync/atomic" - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/pow" ) type CpuAgent struct { mu sync.Mutex workCh chan *Work - quit chan struct{} + stop chan struct{} quitCurrentOp chan struct{} returnCh chan<- *Result - index int - pow pow.PoW + chain consensus.ChainReader + engine consensus.Engine isMining int32 // isMining indicates whether the agent is currently mining } -func NewCpuAgent(index int, pow pow.PoW) *CpuAgent { +func NewCpuAgent(chain consensus.ChainReader, engine consensus.Engine) *CpuAgent { miner := &CpuAgent{ - pow: pow, - index: index, - quit: make(chan struct{}), + chain: chain, + engine: engine, + stop: make(chan struct{}, 1), workCh: make(chan *Work, 1), } - return miner } func (self *CpuAgent) Work() chan<- *Work { return self.workCh } -func (self *CpuAgent) Pow() pow.PoW { return self.pow } func (self *CpuAgent) SetReturnCh(ch chan<- *Result) { self.returnCh = ch } func (self *CpuAgent) Stop() { - close(self.quit) + self.stop <- struct{}{} } func (self *CpuAgent) Start() { - if !atomic.CompareAndSwapInt32(&self.isMining, 0, 1) { return // agent already started } - go self.update() } @@ -82,7 +75,7 @@ out: self.quitCurrentOp = make(chan struct{}) go self.mine(work, self.quitCurrentOp) self.mu.Unlock() - case <-self.quit: + case <-self.stop: self.mu.Lock() if self.quitCurrentOp != nil { close(self.quitCurrentOp) @@ -99,27 +92,27 @@ done: select { case <-self.workCh: default: - close(self.workCh) break done } } - atomic.StoreInt32(&self.isMining, 0) } func (self *CpuAgent) mine(work *Work, stop <-chan struct{}) { - log.Debug(fmt.Sprintf("(re)started agent[%d]. mining...\n", self.index)) - - // Mine - nonce, mixDigest := self.pow.Search(work.Block, stop) - if nonce != 0 { - block := work.Block.WithMiningResult(types.EncodeNonce(nonce), common.BytesToHash(mixDigest)) - self.returnCh <- &Result{work, block} + if result, err := self.engine.Seal(self.chain, work.Block, stop); result != nil { + log.Info("Successfully sealed new block", "number", result.Number(), "hash", result.Hash()) + self.returnCh <- &Result{work, result} } else { + if err != nil { + log.Warn("Block sealing failed", "err", err) + } self.returnCh <- nil } } func (self *CpuAgent) GetHashRate() int64 { - return int64(self.pow.Hashrate()) + if pow, ok := self.engine.(consensus.PoW); ok { + return int64(pow.Hashrate()) + } + return 0 } diff --git a/miner/miner.go b/miner/miner.go index dc0591b9a0..453fff04d9 100644 --- a/miner/miner.go +++ b/miner/miner.go @@ -24,6 +24,7 @@ import ( "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -32,7 +33,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" ) // Backend wraps all methods required for mining. @@ -49,24 +49,24 @@ type Miner struct { worker *worker - threads int coinbase common.Address mining int32 eth Backend - pow pow.PoW + engine consensus.Engine canStart int32 // can start indicates whether we can start the mining operation shouldStart int32 // should start indicates whether we should start after sync } -func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, pow pow.PoW) *Miner { +func New(eth Backend, config *params.ChainConfig, mux *event.TypeMux, engine consensus.Engine) *Miner { miner := &Miner{ eth: eth, mux: mux, - pow: pow, - worker: newWorker(config, common.Address{}, eth, mux), + engine: engine, + worker: newWorker(config, engine, common.Address{}, eth, mux), canStart: 1, } + miner.Register(NewCpuAgent(eth.BlockChain(), engine)) go miner.update() return miner @@ -86,7 +86,7 @@ out: if self.Mining() { self.Stop() atomic.StoreInt32(&self.shouldStart, 1) - log.Info(fmt.Sprint("Mining operation aborted due to sync operation")) + log.Info("Mining aborted due to sync") } case downloader.DoneEvent, downloader.FailedEvent: shouldStart := atomic.LoadInt32(&self.shouldStart) == 1 @@ -94,7 +94,7 @@ out: atomic.StoreInt32(&self.canStart, 1) atomic.StoreInt32(&self.shouldStart, 0) if shouldStart { - self.Start(self.coinbase, self.threads) + self.Start(self.coinbase) } // unsubscribe. we're only interested in this event once events.Unsubscribe() @@ -116,23 +116,18 @@ func (m *Miner) SetGasPrice(price *big.Int) { m.worker.setGasPrice(price) } -func (self *Miner) Start(coinbase common.Address, threads int) { +func (self *Miner) Start(coinbase common.Address) { atomic.StoreInt32(&self.shouldStart, 1) self.worker.setEtherbase(coinbase) self.coinbase = coinbase - self.threads = threads if atomic.LoadInt32(&self.canStart) == 0 { - log.Info(fmt.Sprint("Can not start mining operation due to network sync (starts when finished)")) + log.Info("Network syncing, will start miner afterwards") return } atomic.StoreInt32(&self.mining, 1) - for i := 0; i < threads; i++ { - self.worker.register(NewCpuAgent(i, self.pow)) - } - - log.Info(fmt.Sprintf("Starting mining operation (CPU=%d TOT=%d)\n", threads, len(self.worker.agents))) + log.Info("Starting mining operation") self.worker.start() self.worker.commitNewWork() } @@ -159,7 +154,9 @@ func (self *Miner) Mining() bool { } func (self *Miner) HashRate() (tot int64) { - tot += int64(self.pow.Hashrate()) + if pow, ok := self.engine.(consensus.PoW); ok { + tot += int64(pow.Hashrate()) + } // do we care this might race? is it worth we're rewriting some // aspects of the worker/locking up agents so we can get an accurate // hashrate? diff --git a/miner/remote_agent.go b/miner/remote_agent.go index 08c5fc6f08..bb223ba1bc 100644 --- a/miner/remote_agent.go +++ b/miner/remote_agent.go @@ -18,16 +18,16 @@ package miner import ( "errors" - "fmt" "math/big" "sync" "sync/atomic" "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/log" - "github.com/ethereum/go-ethereum/pow" ) type hashrate struct { @@ -42,7 +42,8 @@ type RemoteAgent struct { workCh chan *Work returnCh chan<- *Result - pow pow.PoW + chain consensus.ChainReader + engine consensus.Engine currentWork *Work work map[common.Hash]*Work @@ -52,9 +53,10 @@ type RemoteAgent struct { running int32 // running indicates whether the agent is active. Call atomically } -func NewRemoteAgent(pow pow.PoW) *RemoteAgent { +func NewRemoteAgent(chain consensus.ChainReader, engine consensus.Engine) *RemoteAgent { return &RemoteAgent{ - pow: pow, + chain: chain, + engine: engine, work: make(map[common.Hash]*Work), hashrate: make(map[common.Hash]hashrate), } @@ -114,7 +116,7 @@ func (a *RemoteAgent) GetWork() ([3]string, error) { block := a.currentWork.Block res[0] = block.HashNoNonce().Hex() - seedHash := pow.EthashSeedHash(block.NumberU64()) + seedHash := ethash.SeedHash(block.NumberU64()) res[1] = common.BytesToHash(seedHash).Hex() // Calculate the "target" to be returned to the external miner n := big.NewInt(1) @@ -129,8 +131,8 @@ func (a *RemoteAgent) GetWork() ([3]string, error) { return res, errors.New("No work available yet, don't panic.") } -// SubmitWork tries to inject a PoW solution tinto the remote agent, returning -// whether the solution was acceted or not (not can be both a bad PoW as well as +// SubmitWork tries to inject a pow solution into the remote agent, returning +// whether the solution was accepted or not (not can be both a bad pow as well as // any other error, like no work pending). func (a *RemoteAgent) SubmitWork(nonce types.BlockNonce, mixDigest, hash common.Hash) bool { a.mu.Lock() @@ -139,15 +141,20 @@ func (a *RemoteAgent) SubmitWork(nonce types.BlockNonce, mixDigest, hash common. // Make sure the work submitted is present work := a.work[hash] if work == nil { - log.Info(fmt.Sprintf("Work was submitted for %x but no pending work found", hash)) + log.Info("Work submitted but none pending", "hash", hash) return false } - // Make sure the PoW solutions is indeed valid - block := work.Block.WithMiningResult(nonce, mixDigest) - if err := a.pow.Verify(block); err != nil { - log.Warn(fmt.Sprintf("Invalid PoW submitted for %x: %v", hash, err)) + // Make sure the Engine solutions is indeed valid + result := work.Block.Header() + result.Nonce = nonce + result.MixDigest = mixDigest + + if err := a.engine.VerifySeal(a.chain, result); err != nil { + log.Warn("Invalid proof-of-work submitted", "hash", hash, "err", err) return false } + block := work.Block.WithSeal(result) + // Solutions seems to be valid, return to the miner and notify acceptance a.returnCh <- &Result{work, block} delete(a.work, hash) diff --git a/miner/unconfirmed.go b/miner/unconfirmed.go index bb7d0ff267..ee52d8512f 100644 --- a/miner/unconfirmed.go +++ b/miner/unconfirmed.go @@ -18,7 +18,6 @@ package miner import ( "container/ring" - "fmt" "sync" "github.com/ethereum/go-ethereum/common" @@ -80,7 +79,7 @@ func (set *unconfirmedBlocks) Insert(index uint64, hash common.Hash) { set.blocks.Move(-1).Link(item) } // Display a log for the user to notify of a new mined block unconfirmed - log.Info(fmt.Sprintf("🔨 mined potential block #%d [%x…], waiting for %d blocks to confirm", index, hash.Bytes()[:4], set.depth)) + log.Info("🔨 mined potential block", "number", index, "hash", hash) } // Shift drops all unconfirmed blocks from the set which exceed the unconfirmed sets depth @@ -100,11 +99,11 @@ func (set *unconfirmedBlocks) Shift(height uint64) { header := set.chain.GetHeaderByNumber(next.index) switch { case header == nil: - log.Warn(fmt.Sprintf("failed to retrieve header of mined block #%d [%x…]", next.index, next.hash.Bytes()[:4])) + log.Warn("Failed to retrieve header of mined block", "number", next.index, "hash", next.hash) case header.Hash() == next.hash: - log.Info(fmt.Sprintf("🔗 mined block #%d [%x…] reached canonical chain", next.index, next.hash.Bytes()[:4])) + log.Info("🔗 block reached canonical chain", "number", next.index, "hash", next.hash) default: - log.Info(fmt.Sprintf("⑂ mined block #%d [%x…] became a side fork", next.index, next.hash.Bytes()[:4])) + log.Info("⑂ block became a side fork", "number", next.index, "hash", next.hash) } // Drop the block out of the ring if set.blocks.Value == set.blocks.Next().Value { diff --git a/miner/worker.go b/miner/worker.go index 2f090924e2..347de4e08a 100644 --- a/miner/worker.go +++ b/miner/worker.go @@ -26,6 +26,8 @@ import ( "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus" + "github.com/ethereum/go-ethereum/consensus/misc" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -34,7 +36,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "gopkg.in/fatih/set.v0" ) @@ -84,6 +85,7 @@ type Result struct { // worker is the main object which takes care of applying messages to the new state type worker struct { config *params.ChainConfig + engine consensus.Engine mu sync.Mutex @@ -94,7 +96,6 @@ type worker struct { agents map[Agent]struct{} recv chan *Result - pow pow.PoW eth Backend chain *core.BlockChain @@ -123,9 +124,10 @@ type worker struct { fullValidation bool } -func newWorker(config *params.ChainConfig, coinbase common.Address, eth Backend, mux *event.TypeMux) *worker { +func newWorker(config *params.ChainConfig, engine consensus.Engine, coinbase common.Address, eth Backend, mux *event.TypeMux) *worker { worker := &worker{ config: config, + engine: engine, eth: eth, mux: mux, chainDb: eth.ChainDb(), @@ -209,16 +211,10 @@ func (self *worker) stop() { self.mu.Lock() defer self.mu.Unlock() if atomic.LoadInt32(&self.mining) == 1 { - // Stop all agents. for agent := range self.agents { agent.Stop() - // Remove CPU agents. - if _, ok := agent.(*CpuAgent); ok { - delete(self.agents, agent) - } } } - atomic.StoreInt32(&self.mining, 0) atomic.StoreInt32(&self.atWork, 0) } @@ -277,7 +273,7 @@ func (self *worker) wait() { if self.fullValidation { if _, err := self.chain.InsertChain(types.Blocks{block}); err != nil { - log.Error(fmt.Sprint("mining err", err)) + log.Error("Mined invalid block", "err", err) continue } go self.mux.Post(core.NewMinedBlockEvent{Block: block}) @@ -285,19 +281,16 @@ func (self *worker) wait() { work.state.Commit(self.config.IsEIP158(block.Number())) parent := self.chain.GetBlock(block.ParentHash(), block.NumberU64()-1) if parent == nil { - log.Error(fmt.Sprint("Invalid block found during mining")) + log.Error("Invalid block found during mining") continue } - - auxValidator := self.eth.BlockChain().AuxValidator() - if err := core.ValidateHeader(self.config, auxValidator, block.Header(), parent.Header(), true, false); err != nil && err != core.BlockFutureErr { - log.Error(fmt.Sprint("Invalid header on mined block:", err)) + if err := self.engine.VerifyHeader(self.chain, block.Header(), false); err != nil { + log.Error("Invalid header on mined block", "err", err) continue } - stat, err := self.chain.WriteBlock(block) if err != nil { - log.Error(fmt.Sprint("error writing block to chain", err)) + log.Error("Failed writing block to chain", "err", err) continue } @@ -333,7 +326,7 @@ func (self *worker) wait() { self.mux.Post(logs) } if err := core.WriteBlockReceipts(self.chainDb, block.Hash(), block.NumberU64(), receipts); err != nil { - log.Warn(fmt.Sprint("error writing block receipts:", err)) + log.Warn("Failed writing block receipts", "err", err) } }(block, work.state.Logs(), work.receipts) } @@ -424,9 +417,9 @@ func (self *worker) commitNewWork() { tstamp = parent.Time().Int64() + 1 } // this will ensure we're not going off too far in the future - if now := time.Now().Unix(); tstamp > now+4 { + if now := time.Now().Unix(); tstamp > now+1 { wait := time.Duration(tstamp-now) * time.Second - log.Info(fmt.Sprint("We are too far in the future. Waiting for", wait)) + log.Info("Mining too far in the future", "wait", common.PrettyDuration(wait)) time.Sleep(wait) } @@ -434,13 +427,19 @@ func (self *worker) commitNewWork() { header := &types.Header{ ParentHash: parent.Hash(), Number: num.Add(num, common.Big1), - Difficulty: core.CalcDifficulty(self.config, uint64(tstamp), parent.Time().Uint64(), parent.Number(), parent.Difficulty()), GasLimit: core.CalcGasLimit(parent), GasUsed: new(big.Int), - Coinbase: self.coinbase, Extra: self.extra, Time: big.NewInt(tstamp), } + // Only set the coinbase if we are mining (avoid spurious block rewards) + if atomic.LoadInt32(&self.mining) == 1 { + header.Coinbase = self.coinbase + } + if err := self.engine.Prepare(self.chain, header); err != nil { + log.Error("Failed to prepare header for mining", "err", err) + return + } // If we are care about TheDAO hard-fork check whether to override the extra-data or not if daoBlock := self.config.DAOForkBlock; daoBlock != nil { // Check whether the block is among the fork extra-override range @@ -457,21 +456,19 @@ func (self *worker) commitNewWork() { // Could potentially happen if starting to mine in an odd state. err := self.makeCurrent(parent, header) if err != nil { - log.Info(fmt.Sprint("Could not create new env for mining, retrying on next block.")) + log.Error("Failed to create mining context", "err", err) return } // Create the current work task and check any fork transitions needed work := self.current if self.config.DAOForkSupport && self.config.DAOForkBlock != nil && self.config.DAOForkBlock.Cmp(header.Number) == 0 { - core.ApplyDAOHardFork(work.state) + misc.ApplyDAOHardFork(work.state) } - pending, err := self.eth.TxPool().Pending() if err != nil { - log.Error(fmt.Sprintf("Could not fetch pending transactions: %v", err)) + log.Error("Failed to fetch pending transactions", "err", err) return } - txs := types.NewTransactionsByPriceAndNonce(pending) work.commitTransactions(self.mux, txs, self.gasPrice, self.chain) @@ -488,31 +485,26 @@ func (self *worker) commitNewWork() { break } if err := self.commitUncle(work, uncle.Header()); err != nil { - log.Trace(fmt.Sprintf("Bad uncle found and will be removed (%x)\n", hash[:4])) + log.Trace("Bad uncle found and will be removed", "hash", hash) log.Trace(fmt.Sprint(uncle)) badUncles = append(badUncles, hash) } else { - log.Debug(fmt.Sprintf("committing %x as uncle\n", hash[:4])) + log.Debug("Committing new uncle to block", "hash", hash) uncles = append(uncles, uncle.Header()) } } for _, hash := range badUncles { delete(self.possibleUncles, hash) } - - if atomic.LoadInt32(&self.mining) == 1 { - // commit state root after all state transitions. - core.AccumulateRewards(work.state, header, uncles) - header.Root = work.state.IntermediateRoot(self.config.IsEIP158(header.Number)) + // Create the new block to seal with the consensus engine + if work.Block, err = self.engine.Finalize(self.chain, header, work.state, work.txs, uncles, work.receipts); err != nil { + log.Error("Failed to finalize block for sealing", "err", err) + return } - - // create the new block whose nonce will be mined. - work.Block = types.NewBlock(header, work.txs, uncles, work.receipts) - // We only care about logging if we're actually mining. if atomic.LoadInt32(&self.mining) == 1 { - log.Info(fmt.Sprintf("commit new work on block %v with %d txs & %d uncles. Took %v\n", work.Block.Number(), work.tcount, len(uncles), time.Since(tstart))) + log.Info("Commit new mining work", "number", work.Block.Number(), "txs", work.tcount, "uncles", len(uncles), "elapsed", common.PrettyDuration(time.Since(tstart))) self.unconfirmed.Shift(work.Block.NumberU64() - 1) } self.push(work) @@ -521,13 +513,13 @@ func (self *worker) commitNewWork() { func (self *worker) commitUncle(work *Work, uncle *types.Header) error { hash := uncle.Hash() if work.uncles.Has(hash) { - return core.UncleError("Uncle not unique") + return core.UncleError("uncle not unique") } if !work.ancestors.Has(uncle.ParentHash) { - return core.UncleError(fmt.Sprintf("Uncle's parent unknown (%x)", uncle.ParentHash[0:4])) + return core.UncleError(fmt.Sprintf("uncle's parent unknown (%x)", uncle.ParentHash[0:4])) } if work.family.Has(hash) { - return core.UncleError(fmt.Sprintf("Uncle already in family (%x)", hash)) + return core.UncleError(fmt.Sprintf("uncle already in family (%x)", hash)) } work.uncles.Add(uncle.Hash()) return nil @@ -552,7 +544,7 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB // Check whether the tx is replay protected. If we're not in the EIP155 hf // phase, start ignoring the sender until we do. if tx.Protected() && !env.config.IsEIP155(env.header.Number) { - log.Trace(fmt.Sprintf("Transaction (%x) is replay protected, but we haven't yet hardforked. Transaction will be ignored until we hardfork.\n", tx.Hash())) + log.Trace("Ignoring reply protected transaction", "hash", tx.Hash(), "eip155", env.config.EIP155Block) txs.Pop() continue @@ -561,7 +553,7 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB // Ignore any transactions (and accounts subsequently) with low gas limits if tx.GasPrice().Cmp(gasPrice) < 0 && !env.ownedAccounts.Has(from) { // Pop the current low-priced transaction without shifting in the next from the account - log.Info(fmt.Sprintf("Transaction (%x) below gas price (tx=%dwei ask=%dwei). All sequential txs from this address(%x) will be ignored\n", tx.Hash().Bytes()[:4], tx.GasPrice(), gasPrice, from[:4])) + log.Warn("Transaction below gas price", "sender", from, "hash", tx.Hash(), "have", tx.GasPrice(), "want", gasPrice) env.lowGasTxs = append(env.lowGasTxs, tx) txs.Pop() @@ -575,12 +567,12 @@ func (env *Work) commitTransactions(mux *event.TypeMux, txs *types.TransactionsB switch { case core.IsGasLimitErr(err): // Pop the current out-of-gas transaction without shifting in the next from the account - log.Trace(fmt.Sprintf("Gas limit reached for (%x) in this block. Continue to try smaller txs\n", from[:4])) + log.Trace("Gas limit exceeded for current block", "sender", from) txs.Pop() case err != nil: // Pop the current failed transaction without shifting in the next from the account - log.Trace(fmt.Sprintf("Transaction (%x) failed, will be removed: %v\n", tx.Hash().Bytes()[:4], err)) + log.Trace("Transaction failed, will be removed", "hash", tx.Hash(), "err", err) env.failedTxs = append(env.failedTxs, tx) txs.Pop() diff --git a/params/util.go b/params/util.go index 546ebb35c3..bf833d5107 100644 --- a/params/util.go +++ b/params/util.go @@ -38,6 +38,6 @@ var ( TestNetSpuriousDragon = big.NewInt(10) MainNetSpuriousDragon = big.NewInt(2675000) - TestNetChainID = big.NewInt(3) // Test net default chain ID - MainNetChainID = big.NewInt(1) // main net default chain ID + TestNetChainID = big.NewInt(3) // Testnet default chain ID + MainNetChainID = big.NewInt(1) // Mainnet default chain ID ) diff --git a/pow/pow.go b/pow/pow.go deleted file mode 100644 index 4849adb3ea..0000000000 --- a/pow/pow.go +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright 2014 The go-ethereum Authors -// This file is part of the go-ethereum library. -// -// The go-ethereum library is free software: you can redistribute it and/or modify -// it under the terms of the GNU Lesser General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// The go-ethereum library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the go-ethereum library. If not, see . - -package pow - -import ( - "math/big" - - "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/core/types" -) - -type Block interface { - Difficulty() *big.Int - HashNoNonce() common.Hash - Nonce() uint64 - MixDigest() common.Hash - NumberU64() uint64 -} - -type ChainManager interface { - GetBlockByNumber(uint64) *types.Block - CurrentBlock() *types.Block -} - -type PoW interface { - Verify(block Block) error - Search(block Block, stop <-chan struct{}) (uint64, []byte) - Hashrate() float64 -} - -// FakePow is a non-validating proof of work implementation. -// It returns true from Verify for any block. -type FakePow struct{} - -// Verify implements PoW, returning a success for an input. -func (pow FakePow) Verify(block Block) error { return nil } - -// Search implements PoW, returning the nonce 0 for any call. -func (pow FakePow) Search(block Block, stop <-chan struct{}) (uint64, []byte) { - return 0, nil -} - -// Hashrate implements PoW, returning 0. -func (pow FakePow) Hashrate() float64 { return 0 } diff --git a/tests/block_test_util.go b/tests/block_test_util.go index 456a4ccb86..b9678a77bd 100644 --- a/tests/block_test_util.go +++ b/tests/block_test_util.go @@ -27,6 +27,7 @@ import ( "strings" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/types" @@ -35,7 +36,6 @@ import ( "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/params" - "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" ) @@ -172,7 +172,7 @@ func runBlockTest(homesteadBlock, daoForkBlock, gasPriceFork *big.Int, test *Blo core.WriteHeadBlockHash(db, test.Genesis.Hash()) evmux := new(event.TypeMux) config := ¶ms.ChainConfig{HomesteadBlock: homesteadBlock, DAOForkBlock: daoForkBlock, DAOForkSupport: true, EIP150Block: gasPriceFork} - chain, err := core.NewBlockChain(db, config, pow.NewSharedEthash(), evmux, vm.Config{}) + chain, err := core.NewBlockChain(db, config, ethash.NewShared(), evmux, vm.Config{}) if err != nil { return err } diff --git a/trie/iterator.go b/trie/iterator.go index 234c49ecc8..ddc674d2bc 100644 --- a/trie/iterator.go +++ b/trie/iterator.go @@ -18,6 +18,7 @@ package trie import ( "bytes" + "github.com/ethereum/go-ethereum/common" ) From b319f027a0be232a9cb307336b0349b36737c7f1 Mon Sep 17 00:00:00 2001 From: Lewis Marshall Date: Tue, 4 Apr 2017 23:20:07 +0100 Subject: [PATCH 55/57] cmd/swarm, swarm/api/client: add HTTP API client and 'swarm ls' command (#3742) This adds a swarm ls command which lists files and directories stored in a manifest. Rather than listing all files, it uses "directory prefixes" in case there are a lot of files in a manifest but you just want to traverse it. This also includes some refactoring to the tests and the introduction of a swarm/api/client package to make things easier to test. --- cmd/swarm/list.go | 58 +++++++ cmd/swarm/main.go | 9 + cmd/swarm/manifest.go | 51 +++--- cmd/swarm/upload.go | 163 +---------------- swarm/api/client/client.go | 298 ++++++++++++++++++++++++++++++++ swarm/api/client/client_test.go | 105 +++++++++++ swarm/api/http/server.go | 42 +++-- swarm/api/http/server_test.go | 52 +----- swarm/swarm.go | 5 +- swarm/testutil/http.go | 56 ++++++ 10 files changed, 594 insertions(+), 245 deletions(-) create mode 100644 cmd/swarm/list.go create mode 100644 swarm/api/client/client.go create mode 100644 swarm/api/client/client_test.go create mode 100644 swarm/testutil/http.go diff --git a/cmd/swarm/list.go b/cmd/swarm/list.go new file mode 100644 index 0000000000..3a68fef030 --- /dev/null +++ b/cmd/swarm/list.go @@ -0,0 +1,58 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package main + +import ( + "fmt" + "os" + "strings" + "text/tabwriter" + + "github.com/ethereum/go-ethereum/cmd/utils" + swarm "github.com/ethereum/go-ethereum/swarm/api/client" + "gopkg.in/urfave/cli.v1" +) + +func list(ctx *cli.Context) { + args := ctx.Args() + + if len(args) < 1 { + utils.Fatalf("Please supply a manifest reference as the first argument") + } else if len(args) > 2 { + utils.Fatalf("Too many arguments - usage 'swarm ls manifest [prefix]'") + } + manifest := args[0] + + var prefix string + if len(args) == 2 { + prefix = args[1] + } + + bzzapi := strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/") + client := swarm.NewClient(bzzapi) + entries, err := client.ManifestFileList(manifest, prefix) + if err != nil { + utils.Fatalf("Failed to generate file and directory list: %s", err) + } + + w := tabwriter.NewWriter(os.Stdout, 1, 2, 2, ' ', 0) + defer w.Flush() + fmt.Fprintln(w, "HASH\tCONTENT TYPE\tPATH") + for _, entry := range entries { + fmt.Fprintf(w, "%s\t%s\t%s\n", entry.Hash, entry.ContentType, entry.Path) + } +} diff --git a/cmd/swarm/main.go b/cmd/swarm/main.go index 3c82497e5d..731c300f82 100644 --- a/cmd/swarm/main.go +++ b/cmd/swarm/main.go @@ -145,6 +145,15 @@ The output of this command is supposed to be machine-readable. ArgsUsage: " ", Description: ` "upload a file or directory to swarm using the HTTP API and prints the root hash", +`, + }, + { + Action: list, + Name: "ls", + Usage: "list files and directories contained in a manifest", + ArgsUsage: " []", + Description: ` +Lists files and directories contained in a manifest. `, }, { diff --git a/cmd/swarm/manifest.go b/cmd/swarm/manifest.go index 2b6b023135..698b8ddb88 100644 --- a/cmd/swarm/manifest.go +++ b/cmd/swarm/manifest.go @@ -25,6 +25,7 @@ import ( "strings" "github.com/ethereum/go-ethereum/cmd/utils" + swarm "github.com/ethereum/go-ethereum/swarm/api/client" "gopkg.in/urfave/cli.v1" ) @@ -41,7 +42,7 @@ func add(ctx *cli.Context) { ctype string wantManifest = ctx.GlobalBoolT(SwarmWantManifestFlag.Name) - mroot manifest + mroot swarm.Manifest ) if len(args) > 3 { @@ -75,7 +76,7 @@ func update(ctx *cli.Context) { ctype string wantManifest = ctx.GlobalBoolT(SwarmWantManifestFlag.Name) - mroot manifest + mroot swarm.Manifest ) if len(args) > 3 { ctype = args[3] @@ -105,7 +106,7 @@ func remove(ctx *cli.Context) { path = args[1] wantManifest = ctx.GlobalBoolT(SwarmWantManifestFlag.Name) - mroot manifest + mroot swarm.Manifest ) newManifest := removeEntryFromManifest(ctx, mhash, path) @@ -123,21 +124,21 @@ func addEntryToManifest(ctx *cli.Context, mhash, path, hash, ctype string) strin var ( bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/") - client = &client{api: bzzapi} - longestPathEntry = manifestEntry{ + client = swarm.NewClient(bzzapi) + longestPathEntry = swarm.ManifestEntry{ Path: "", Hash: "", ContentType: "", } ) - mroot, err := client.downloadManifest(mhash) + mroot, err := client.DownloadManifest(mhash) if err != nil { utils.Fatalf("Manifest download failed: %v", err) } //TODO: check if the "hash" to add is valid and present in swarm - _, err = client.downloadManifest(hash) + _, err = client.DownloadManifest(hash) if err != nil { utils.Fatalf("Hash to add is not present: %v", err) } @@ -162,7 +163,7 @@ func addEntryToManifest(ctx *cli.Context, mhash, path, hash, ctype string) strin newHash := addEntryToManifest(ctx, longestPathEntry.Hash, newPath, hash, ctype) // Replace the hash for parent Manifests - newMRoot := manifest{} + newMRoot := swarm.Manifest{} for _, entry := range mroot.Entries { if longestPathEntry.Path == entry.Path { entry.Hash = newHash @@ -172,7 +173,7 @@ func addEntryToManifest(ctx *cli.Context, mhash, path, hash, ctype string) strin mroot = newMRoot } else { // Add the entry in the leaf Manifest - newEntry := manifestEntry{ + newEntry := swarm.ManifestEntry{ Path: path, Hash: hash, ContentType: ctype, @@ -180,7 +181,7 @@ func addEntryToManifest(ctx *cli.Context, mhash, path, hash, ctype string) strin mroot.Entries = append(mroot.Entries, newEntry) } - newManifestHash, err := client.uploadManifest(mroot) + newManifestHash, err := client.UploadManifest(mroot) if err != nil { utils.Fatalf("Manifest upload failed: %v", err) } @@ -192,20 +193,20 @@ func updateEntryInManifest(ctx *cli.Context, mhash, path, hash, ctype string) st var ( bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/") - client = &client{api: bzzapi} - newEntry = manifestEntry{ + client = swarm.NewClient(bzzapi) + newEntry = swarm.ManifestEntry{ Path: "", Hash: "", ContentType: "", } - longestPathEntry = manifestEntry{ + longestPathEntry = swarm.ManifestEntry{ Path: "", Hash: "", ContentType: "", } ) - mroot, err := client.downloadManifest(mhash) + mroot, err := client.DownloadManifest(mhash) if err != nil { utils.Fatalf("Manifest download failed: %v", err) } @@ -236,7 +237,7 @@ func updateEntryInManifest(ctx *cli.Context, mhash, path, hash, ctype string) st newHash := updateEntryInManifest(ctx, longestPathEntry.Hash, newPath, hash, ctype) // Replace the hash for parent Manifests - newMRoot := manifest{} + newMRoot := swarm.Manifest{} for _, entry := range mroot.Entries { if longestPathEntry.Path == entry.Path { entry.Hash = newHash @@ -249,10 +250,10 @@ func updateEntryInManifest(ctx *cli.Context, mhash, path, hash, ctype string) st if newEntry.Path != "" { // Replace the hash for leaf Manifest - newMRoot := manifest{} + newMRoot := swarm.Manifest{} for _, entry := range mroot.Entries { if newEntry.Path == entry.Path { - myEntry := manifestEntry{ + myEntry := swarm.ManifestEntry{ Path: entry.Path, Hash: hash, ContentType: ctype, @@ -265,7 +266,7 @@ func updateEntryInManifest(ctx *cli.Context, mhash, path, hash, ctype string) st mroot = newMRoot } - newManifestHash, err := client.uploadManifest(mroot) + newManifestHash, err := client.UploadManifest(mroot) if err != nil { utils.Fatalf("Manifest upload failed: %v", err) } @@ -276,20 +277,20 @@ func removeEntryFromManifest(ctx *cli.Context, mhash, path string) string { var ( bzzapi = strings.TrimRight(ctx.GlobalString(SwarmApiFlag.Name), "/") - client = &client{api: bzzapi} - entryToRemove = manifestEntry{ + client = swarm.NewClient(bzzapi) + entryToRemove = swarm.ManifestEntry{ Path: "", Hash: "", ContentType: "", } - longestPathEntry = manifestEntry{ + longestPathEntry = swarm.ManifestEntry{ Path: "", Hash: "", ContentType: "", } ) - mroot, err := client.downloadManifest(mhash) + mroot, err := client.DownloadManifest(mhash) if err != nil { utils.Fatalf("Manifest download failed: %v", err) } @@ -318,7 +319,7 @@ func removeEntryFromManifest(ctx *cli.Context, mhash, path string) string { newHash := removeEntryFromManifest(ctx, longestPathEntry.Hash, newPath) // Replace the hash for parent Manifests - newMRoot := manifest{} + newMRoot := swarm.Manifest{} for _, entry := range mroot.Entries { if longestPathEntry.Path == entry.Path { entry.Hash = newHash @@ -330,7 +331,7 @@ func removeEntryFromManifest(ctx *cli.Context, mhash, path string) string { if entryToRemove.Path != "" { // remove the entry in this Manifest - newMRoot := manifest{} + newMRoot := swarm.Manifest{} for _, entry := range mroot.Entries { if entryToRemove.Path != entry.Path { newMRoot.Entries = append(newMRoot.Entries, entry) @@ -339,7 +340,7 @@ func removeEntryFromManifest(ctx *cli.Context, mhash, path string) string { mroot = newMRoot } - newManifestHash, err := client.uploadManifest(mroot) + newManifestHash, err := client.UploadManifest(mroot) if err != nil { utils.Fatalf("Manifest upload failed: %v", err) } diff --git a/cmd/swarm/upload.go b/cmd/swarm/upload.go index 7b49617787..696b907d22 100644 --- a/cmd/swarm/upload.go +++ b/cmd/swarm/upload.go @@ -18,21 +18,15 @@ package main import ( - "bytes" "encoding/json" "fmt" - "io" - "io/ioutil" - "mime" - "net/http" "os" "os/user" "path" - "path/filepath" "strings" "github.com/ethereum/go-ethereum/cmd/utils" - "github.com/ethereum/go-ethereum/log" + swarm "github.com/ethereum/go-ethereum/swarm/api/client" "gopkg.in/urfave/cli.v1" ) @@ -50,7 +44,7 @@ func upload(ctx *cli.Context) { var ( file = args[0] - client = &client{api: bzzapi} + client = swarm.NewClient(bzzapi) ) fi, err := os.Stat(expandPath(file)) if err != nil { @@ -63,25 +57,25 @@ func upload(ctx *cli.Context) { if !wantManifest { utils.Fatalf("Manifest is required for directory uploads") } - mhash, err := client.uploadDirectory(file, defaultPath) + mhash, err := client.UploadDirectory(file, defaultPath) if err != nil { utils.Fatalf("Failed to upload directory: %v", err) } fmt.Println(mhash) return } - entry, err := client.uploadFile(file, fi) + entry, err := client.UploadFile(file, fi) if err != nil { utils.Fatalf("Upload failed: %v", err) } - mroot := manifest{[]manifestEntry{entry}} + mroot := swarm.Manifest{Entries: []swarm.ManifestEntry{entry}} if !wantManifest { // Print the manifest. This is the only output to stdout. mrootJSON, _ := json.MarshalIndent(mroot, "", " ") fmt.Println(string(mrootJSON)) return } - hash, err := client.uploadManifest(mroot) + hash, err := client.UploadManifest(mroot) if err != nil { utils.Fatalf("Manifest upload failed: %v", err) } @@ -111,148 +105,3 @@ func homeDir() string { } return "" } - -// client wraps interaction with the swarm HTTP gateway. -type client struct { - api string -} - -// manifest is the JSON representation of a swarm manifest. -type manifestEntry struct { - Hash string `json:"hash,omitempty"` - ContentType string `json:"contentType,omitempty"` - Path string `json:"path,omitempty"` -} - -// manifest is the JSON representation of a swarm manifest. -type manifest struct { - Entries []manifestEntry `json:"entries,omitempty"` -} - -func (c *client) uploadDirectory(dir string, defaultPath string) (string, error) { - mhash, err := c.postRaw("application/json", 2, ioutil.NopCloser(bytes.NewReader([]byte("{}")))) - if err != nil { - return "", fmt.Errorf("failed to upload empty manifest") - } - if len(defaultPath) > 0 { - fi, err := os.Stat(defaultPath) - if err != nil { - return "", err - } - mhash, err = c.uploadToManifest(mhash, "", defaultPath, fi) - if err != nil { - return "", err - } - } - prefix := filepath.ToSlash(filepath.Clean(dir)) + "/" - err = filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error { - if err != nil || fi.IsDir() { - return err - } - if !strings.HasPrefix(path, dir) { - return fmt.Errorf("path %s outside directory %s", path, dir) - } - uripath := strings.TrimPrefix(filepath.ToSlash(filepath.Clean(path)), prefix) - mhash, err = c.uploadToManifest(mhash, uripath, path, fi) - return err - }) - return mhash, err -} - -func (c *client) uploadFile(file string, fi os.FileInfo) (manifestEntry, error) { - hash, err := c.uploadFileContent(file, fi) - m := manifestEntry{ - Hash: hash, - ContentType: mime.TypeByExtension(filepath.Ext(fi.Name())), - } - return m, err -} - -func (c *client) uploadFileContent(file string, fi os.FileInfo) (string, error) { - fd, err := os.Open(file) - if err != nil { - return "", err - } - defer fd.Close() - log.Info("Uploading swarm content", "file", file, "bytes", fi.Size()) - return c.postRaw("application/octet-stream", fi.Size(), fd) -} - -func (c *client) uploadManifest(m manifest) (string, error) { - jsm, err := json.Marshal(m) - if err != nil { - panic(err) - } - log.Info("Uploading swarm manifest") - return c.postRaw("application/json", int64(len(jsm)), ioutil.NopCloser(bytes.NewReader(jsm))) -} - -func (c *client) uploadToManifest(mhash string, path string, fpath string, fi os.FileInfo) (string, error) { - fd, err := os.Open(fpath) - if err != nil { - return "", err - } - defer fd.Close() - log.Info("Uploading swarm content and path", "file", fpath, "bytes", fi.Size(), "path", path) - req, err := http.NewRequest("PUT", c.api+"/bzz:/"+mhash+"/"+path, fd) - if err != nil { - return "", err - } - req.Header.Set("content-type", mime.TypeByExtension(filepath.Ext(fi.Name()))) - req.ContentLength = fi.Size() - resp, err := http.DefaultClient.Do(req) - if err != nil { - return "", err - } - defer resp.Body.Close() - if resp.StatusCode >= 400 { - return "", fmt.Errorf("bad status: %s", resp.Status) - } - content, err := ioutil.ReadAll(resp.Body) - return string(content), err -} - -func (c *client) postRaw(mimetype string, size int64, body io.ReadCloser) (string, error) { - req, err := http.NewRequest("POST", c.api+"/bzzr:/", body) - if err != nil { - return "", err - } - req.Header.Set("content-type", mimetype) - req.ContentLength = size - resp, err := http.DefaultClient.Do(req) - if err != nil { - return "", err - } - defer resp.Body.Close() - if resp.StatusCode >= 400 { - return "", fmt.Errorf("bad status: %s", resp.Status) - } - content, err := ioutil.ReadAll(resp.Body) - return string(content), err -} - -func (c *client) downloadManifest(mhash string) (manifest, error) { - - mroot := manifest{} - req, err := http.NewRequest("GET", c.api+"/bzzr:/"+mhash, nil) - if err != nil { - return mroot, err - } - resp, err := http.DefaultClient.Do(req) - if err != nil { - return mroot, err - } - defer resp.Body.Close() - - if resp.StatusCode >= 400 { - return mroot, fmt.Errorf("bad status: %s", resp.Status) - - } - content, err := ioutil.ReadAll(resp.Body) - - err = json.Unmarshal(content, &mroot) - if err != nil { - return mroot, fmt.Errorf("Manifest %v is malformed: %v", mhash, err) - } - return mroot, err -} diff --git a/swarm/api/client/client.go b/swarm/api/client/client.go new file mode 100644 index 0000000000..15e44f35d7 --- /dev/null +++ b/swarm/api/client/client.go @@ -0,0 +1,298 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of go-ethereum. +// +// go-ethereum is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// go-ethereum is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with go-ethereum. If not, see . + +package client + +import ( + "bytes" + "encoding/json" + "fmt" + "io" + "io/ioutil" + "mime" + "net/http" + "os" + "path/filepath" + "strings" + + "github.com/ethereum/go-ethereum/log" +) + +var ( + DefaultGateway = "http://localhost:8500" + DefaultClient = NewClient(DefaultGateway) +) + +// Manifest represents a swarm manifest. +type Manifest struct { + Entries []ManifestEntry `json:"entries,omitempty"` +} + +// ManifestEntry represents an entry in a swarm manifest. +type ManifestEntry struct { + Hash string `json:"hash,omitempty"` + ContentType string `json:"contentType,omitempty"` + Path string `json:"path,omitempty"` +} + +func NewClient(gateway string) *Client { + return &Client{ + Gateway: gateway, + } +} + +// Client wraps interaction with a swarm HTTP gateway. +type Client struct { + Gateway string +} + +func (c *Client) UploadDirectory(dir string, defaultPath string) (string, error) { + mhash, err := c.postRaw("application/json", 2, ioutil.NopCloser(bytes.NewReader([]byte("{}")))) + if err != nil { + return "", fmt.Errorf("failed to upload empty manifest") + } + if len(defaultPath) > 0 { + fi, err := os.Stat(defaultPath) + if err != nil { + return "", err + } + mhash, err = c.uploadToManifest(mhash, "", defaultPath, fi) + if err != nil { + return "", err + } + } + prefix := filepath.ToSlash(filepath.Clean(dir)) + "/" + err = filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error { + if err != nil || fi.IsDir() { + return err + } + if !strings.HasPrefix(path, dir) { + return fmt.Errorf("path %s outside directory %s", path, dir) + } + uripath := strings.TrimPrefix(filepath.ToSlash(filepath.Clean(path)), prefix) + mhash, err = c.uploadToManifest(mhash, uripath, path, fi) + return err + }) + return mhash, err +} + +func (c *Client) UploadFile(file string, fi os.FileInfo) (ManifestEntry, error) { + hash, err := c.uploadFileContent(file, fi) + m := ManifestEntry{ + Hash: hash, + ContentType: mime.TypeByExtension(filepath.Ext(fi.Name())), + } + return m, err +} + +func (c *Client) uploadFileContent(file string, fi os.FileInfo) (string, error) { + fd, err := os.Open(file) + if err != nil { + return "", err + } + defer fd.Close() + log.Info("Uploading swarm content", "file", file, "bytes", fi.Size()) + return c.postRaw("application/octet-stream", fi.Size(), fd) +} + +func (c *Client) UploadManifest(m Manifest) (string, error) { + jsm, err := json.Marshal(m) + if err != nil { + panic(err) + } + log.Info("Uploading swarm manifest") + return c.postRaw("application/json", int64(len(jsm)), ioutil.NopCloser(bytes.NewReader(jsm))) +} + +func (c *Client) uploadToManifest(mhash string, path string, fpath string, fi os.FileInfo) (string, error) { + fd, err := os.Open(fpath) + if err != nil { + return "", err + } + defer fd.Close() + log.Info("Uploading swarm content and path", "file", fpath, "bytes", fi.Size(), "path", path) + req, err := http.NewRequest("PUT", c.Gateway+"/bzz:/"+mhash+"/"+path, fd) + if err != nil { + return "", err + } + req.Header.Set("content-type", mime.TypeByExtension(filepath.Ext(fi.Name()))) + req.ContentLength = fi.Size() + resp, err := http.DefaultClient.Do(req) + if err != nil { + return "", err + } + defer resp.Body.Close() + if resp.StatusCode >= 400 { + return "", fmt.Errorf("bad status: %s", resp.Status) + } + content, err := ioutil.ReadAll(resp.Body) + return string(content), err +} + +func (c *Client) postRaw(mimetype string, size int64, body io.ReadCloser) (string, error) { + req, err := http.NewRequest("POST", c.Gateway+"/bzzr:/", body) + if err != nil { + return "", err + } + req.Header.Set("content-type", mimetype) + req.ContentLength = size + resp, err := http.DefaultClient.Do(req) + if err != nil { + return "", err + } + defer resp.Body.Close() + if resp.StatusCode >= 400 { + return "", fmt.Errorf("bad status: %s", resp.Status) + } + content, err := ioutil.ReadAll(resp.Body) + return string(content), err +} + +func (c *Client) DownloadManifest(mhash string) (Manifest, error) { + + mroot := Manifest{} + req, err := http.NewRequest("GET", c.Gateway+"/bzzr:/"+mhash, nil) + if err != nil { + return mroot, err + } + resp, err := http.DefaultClient.Do(req) + if err != nil { + return mroot, err + } + defer resp.Body.Close() + + if resp.StatusCode >= 400 { + return mroot, fmt.Errorf("bad status: %s", resp.Status) + + } + content, err := ioutil.ReadAll(resp.Body) + + err = json.Unmarshal(content, &mroot) + if err != nil { + return mroot, fmt.Errorf("Manifest %v is malformed: %v", mhash, err) + } + return mroot, err +} + +// ManifestFileList downloads the manifest with the given hash and generates a +// list of files and directory prefixes which have the specified prefix. +// +// For example, if the manifest represents the following directory structure: +// +// file1.txt +// file2.txt +// dir1/file3.txt +// dir1/dir2/file4.txt +// +// Then: +// +// - a prefix of "" would return [dir1/, file1.txt, file2.txt] +// - a prefix of "file" would return [file1.txt, file2.txt] +// - a prefix of "dir1/" would return [dir1/dir2/, dir1/file3.txt] +func (c *Client) ManifestFileList(hash, prefix string) (entries []ManifestEntry, err error) { + manifest, err := c.DownloadManifest(hash) + if err != nil { + return nil, err + } + + // handleFile handles a manifest entry which is a direct reference to a + // file (i.e. it is not a swarm manifest) + handleFile := func(entry ManifestEntry) { + // ignore the file if it doesn't have the specified prefix + if !strings.HasPrefix(entry.Path, prefix) { + return + } + // if the path after the prefix contains a directory separator, + // add a directory prefix to the entries, otherwise add the + // file + suffix := strings.TrimPrefix(entry.Path, prefix) + if sepIndex := strings.Index(suffix, "/"); sepIndex > -1 { + entries = append(entries, ManifestEntry{ + Path: prefix + suffix[:sepIndex+1], + ContentType: "DIR", + }) + } else { + if entry.Path == "" { + entry.Path = "/" + } + entries = append(entries, entry) + } + } + + // handleManifest handles a manifest entry which is a reference to + // another swarm manifest. + handleManifest := func(entry ManifestEntry) error { + // if the manifest's path is a prefix of the specified prefix + // then just recurse into the manifest by stripping its path + // from the prefix + if strings.HasPrefix(prefix, entry.Path) { + subPrefix := strings.TrimPrefix(prefix, entry.Path) + subEntries, err := c.ManifestFileList(entry.Hash, subPrefix) + if err != nil { + return err + } + // prefix the manifest's path to the sub entries and + // add them to the returned entries + for i, subEntry := range subEntries { + subEntry.Path = entry.Path + subEntry.Path + subEntries[i] = subEntry + } + entries = append(entries, subEntries...) + return nil + } + + // if the manifest's path has the specified prefix, then if the + // path after the prefix contains a directory separator, add a + // directory prefix to the entries, otherwise recurse into the + // manifest + if strings.HasPrefix(entry.Path, prefix) { + suffix := strings.TrimPrefix(entry.Path, prefix) + sepIndex := strings.Index(suffix, "/") + if sepIndex > -1 { + entries = append(entries, ManifestEntry{ + Path: prefix + suffix[:sepIndex+1], + ContentType: "DIR", + }) + return nil + } + subEntries, err := c.ManifestFileList(entry.Hash, "") + if err != nil { + return err + } + // prefix the manifest's path to the sub entries and + // add them to the returned entries + for i, subEntry := range subEntries { + subEntry.Path = entry.Path + subEntry.Path + subEntries[i] = subEntry + } + entries = append(entries, subEntries...) + return nil + } + return nil + } + + for _, entry := range manifest.Entries { + if entry.ContentType == "application/bzz-manifest+json" { + if err := handleManifest(entry); err != nil { + return nil, err + } + } else { + handleFile(entry) + } + } + + return +} diff --git a/swarm/api/client/client_test.go b/swarm/api/client/client_test.go new file mode 100644 index 0000000000..1354744750 --- /dev/null +++ b/swarm/api/client/client_test.go @@ -0,0 +1,105 @@ +// Copyright 2016 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see . + +package client + +import ( + "io/ioutil" + "os" + "path/filepath" + "reflect" + "sort" + "testing" + + "github.com/ethereum/go-ethereum/swarm/testutil" +) + +func TestClientManifestFileList(t *testing.T) { + srv := testutil.NewTestSwarmServer(t) + defer srv.Close() + + dir, err := ioutil.TempDir("", "swarm-client-test") + if err != nil { + t.Fatal(err) + } + files := []string{ + "file1.txt", + "file2.txt", + "dir1/file3.txt", + "dir1/file4.txt", + "dir2/file5.txt", + "dir2/dir3/file6.txt", + "dir2/dir4/file7.txt", + "dir2/dir4/file8.txt", + } + for _, file := range files { + path := filepath.Join(dir, file) + if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil { + t.Fatalf("error creating dir for %s: %s", path, err) + } + if err := ioutil.WriteFile(path, []byte("data"), 0644); err != nil { + t.Fatalf("error writing file %s: %s", path, err) + } + } + + client := NewClient(srv.URL) + + hash, err := client.UploadDirectory(dir, "") + if err != nil { + t.Fatalf("error uploading directory: %s", err) + } + + ls := func(prefix string) []string { + entries, err := client.ManifestFileList(hash, prefix) + if err != nil { + t.Fatal(err) + } + paths := make([]string, len(entries)) + for i, entry := range entries { + paths[i] = entry.Path + } + sort.Strings(paths) + return paths + } + + tests := map[string][]string{ + "": []string{"dir1/", "dir2/", "file1.txt", "file2.txt"}, + "file": []string{"file1.txt", "file2.txt"}, + "file1": []string{"file1.txt"}, + "file2.txt": []string{"file2.txt"}, + "file12": []string{}, + "dir": []string{"dir1/", "dir2/"}, + "dir1": []string{"dir1/"}, + "dir1/": []string{"dir1/file3.txt", "dir1/file4.txt"}, + "dir1/file": []string{"dir1/file3.txt", "dir1/file4.txt"}, + "dir1/file3.txt": []string{"dir1/file3.txt"}, + "dir1/file34": []string{}, + "dir2/": []string{"dir2/dir3/", "dir2/dir4/", "dir2/file5.txt"}, + "dir2/file": []string{"dir2/file5.txt"}, + "dir2/dir": []string{"dir2/dir3/", "dir2/dir4/"}, + "dir2/dir3/": []string{"dir2/dir3/file6.txt"}, + "dir2/dir4/": []string{"dir2/dir4/file7.txt", "dir2/dir4/file8.txt"}, + "dir2/dir4/file": []string{"dir2/dir4/file7.txt", "dir2/dir4/file8.txt"}, + "dir2/dir4/file7.txt": []string{"dir2/dir4/file7.txt"}, + "dir2/dir4/file78": []string{}, + } + for prefix, expected := range tests { + actual := ls(prefix) + if !reflect.DeepEqual(actual, expected) { + t.Fatalf("expected prefix %q to return paths %v, got %v", prefix, expected, actual) + } + } +} diff --git a/swarm/api/http/server.go b/swarm/api/http/server.go index ae113750ff..44e2c203a4 100644 --- a/swarm/api/http/server.go +++ b/swarm/api/http/server.go @@ -56,9 +56,9 @@ type sequentialReader struct { lock sync.Mutex } -// Server is the basic configuration needs for the HTTP server and also +// ServerConfig is the basic configuration needed for the HTTP server and also // includes CORS settings. -type Server struct { +type ServerConfig struct { Addr string CorsString string } @@ -69,13 +69,9 @@ type Server struct { // https://github.com/atom/electron/blob/master/docs/api/protocol.md // starts up http server -func StartHttpServer(api *api.Api, server *Server) { - serveMux := http.NewServeMux() - serveMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { - handler(w, r, api) - }) +func StartHttpServer(api *api.Api, config *ServerConfig) { var allowedOrigins []string - for _, domain := range strings.Split(server.CorsString, ",") { + for _, domain := range strings.Split(config.CorsString, ",") { allowedOrigins = append(allowedOrigins, strings.TrimSpace(domain)) } c := cors.New(cors.Options{ @@ -84,13 +80,21 @@ func StartHttpServer(api *api.Api, server *Server) { MaxAge: 600, AllowedHeaders: []string{"*"}, }) - hdlr := c.Handler(serveMux) + hdlr := c.Handler(NewServer(api)) - go http.ListenAndServe(server.Addr, hdlr) - log.Info(fmt.Sprintf("Swarm HTTP proxy started on localhost:%s", server.Addr)) + go http.ListenAndServe(config.Addr, hdlr) + log.Info(fmt.Sprintf("Swarm HTTP proxy started on localhost:%s", config.Addr)) } -func handler(w http.ResponseWriter, r *http.Request, a *api.Api) { +func NewServer(api *api.Api) *Server { + return &Server{api} +} + +type Server struct { + api *api.Api +} + +func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { requestURL := r.URL // This is wrong // if requestURL.Host == "" { @@ -135,7 +139,7 @@ func handler(w http.ResponseWriter, r *http.Request, a *api.Api) { http.Error(w, "Missing Content-Length header in request.", http.StatusBadRequest) return } - key, err := a.Store(io.LimitReader(r.Body, r.ContentLength), r.ContentLength, nil) + key, err := s.api.Store(io.LimitReader(r.Body, r.ContentLength), r.ContentLength, nil) if err == nil { log.Debug(fmt.Sprintf("Content for %v stored", key.Log())) } else { @@ -160,7 +164,7 @@ func handler(w http.ResponseWriter, r *http.Request, a *api.Api) { mime := r.Header.Get("Content-Type") // TODO proper root hash separation log.Debug(fmt.Sprintf("Modify '%s' to store %v as '%s'.", path, key.Log(), mime)) - newKey, err := a.Modify(path, common.Bytes2Hex(key), mime, nameresolver) + newKey, err := s.api.Modify(path, common.Bytes2Hex(key), mime, nameresolver) if err == nil { log.Debug(fmt.Sprintf("Swarm replaced manifest by '%s'", newKey)) w.Header().Set("Content-Type", "text/plain") @@ -178,7 +182,7 @@ func handler(w http.ResponseWriter, r *http.Request, a *api.Api) { } else { path = api.RegularSlashes(path) log.Debug(fmt.Sprintf("Delete '%s'.", path)) - newKey, err := a.Modify(path, "", "", nameresolver) + newKey, err := s.api.Modify(path, "", "", nameresolver) if err == nil { log.Debug(fmt.Sprintf("Swarm replaced manifest by '%s'", newKey)) w.Header().Set("Content-Type", "text/plain") @@ -199,16 +203,16 @@ func handler(w http.ResponseWriter, r *http.Request, a *api.Api) { parsedurl, _ := api.Parse(path) if parsedurl == path { - key, err := a.Resolve(parsedurl, nameresolver) + key, err := s.api.Resolve(parsedurl, nameresolver) if err != nil { log.Error(fmt.Sprintf("%v", err)) http.Error(w, err.Error(), http.StatusBadRequest) return } - reader = a.Retrieve(key) + reader = s.api.Retrieve(key) } else { var status int - readertmp, _, status, err := a.Get(path, nameresolver) + readertmp, _, status, err := s.api.Get(path, nameresolver) if err != nil { http.Error(w, err.Error(), status) return @@ -247,7 +251,7 @@ func handler(w http.ResponseWriter, r *http.Request, a *api.Api) { http.Redirect(w, r, path+"/", http.StatusFound) return } - reader, mimeType, status, err := a.Get(path, nameresolver) + reader, mimeType, status, err := s.api.Get(path, nameresolver) if err != nil { if _, ok := err.(api.ErrResolve); ok { log.Debug(fmt.Sprintf("%v", err)) diff --git a/swarm/api/http/server_test.go b/swarm/api/http/server_test.go index 88b49b9a5e..45a867f516 100644 --- a/swarm/api/http/server_test.go +++ b/swarm/api/http/server_test.go @@ -14,7 +14,7 @@ // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . -package http +package http_test import ( "bytes" @@ -22,19 +22,16 @@ import ( "net/http" "sync" "testing" - "time" "github.com/ethereum/go-ethereum/common" - "github.com/ethereum/go-ethereum/swarm/api" "github.com/ethereum/go-ethereum/swarm/storage" + "github.com/ethereum/go-ethereum/swarm/testutil" ) func TestBzzrGetPath(t *testing.T) { var err error - maxproxyattempts := 3 - testmanifest := []string{ `{"entries":[{"path":"a/","hash":"674af7073604ebfc0282a4ab21e5ef1a3c22913866879ebc0816f8a89896b2ed","contentType":"application/bzz-manifest+json","status":0}]}`, `{"entries":[{"path":"a","hash":"011b4d03dd8c01f1049143cf9c4c817e4b167f1d1b83e5c6f0f10d89ba1e7bce","contentType":"","status":0},{"path":"b/","hash":"0a87b1c3e4bf013686cdf107ec58590f2004610ee58cc2240f26939f691215f5","contentType":"application/bzz-manifest+json","status":0}]}`, @@ -54,61 +51,30 @@ func TestBzzrGetPath(t *testing.T) { key := [3]storage.Key{} - dir, _ := ioutil.TempDir("", "bzz-storage-test") - - storeparams := &storage.StoreParams{ - ChunkDbPath: dir, - DbCapacity: 5000000, - CacheCapacity: 5000, - Radius: 0, - } - - localStore, err := storage.NewLocalStore(storage.MakeHashFunc("SHA3"), storeparams) - if err != nil { - t.Fatal(err) - } - chunker := storage.NewTreeChunker(storage.NewChunkerParams()) - dpa := &storage.DPA{ - Chunker: chunker, - ChunkStore: localStore, - } - dpa.Start() - defer dpa.Stop() + srv := testutil.NewTestSwarmServer(t) + defer srv.Close() wg := &sync.WaitGroup{} for i, mf := range testmanifest { reader[i] = bytes.NewReader([]byte(mf)) - key[i], err = dpa.Store(reader[i], int64(len(mf)), wg, nil) + key[i], err = srv.Dpa.Store(reader[i], int64(len(mf)), wg, nil) if err != nil { t.Fatal(err) } wg.Wait() } - a := api.NewApi(dpa, nil) - - /// \todo iterate port numbers up if fail - StartHttpServer(a, &Server{Addr: "127.0.0.1:8504", CorsString: ""}) - // how to wait for ListenAndServe to have initialized? This is pretty cruuuude - // if we fix it we don't need maxproxyattempts anymore either - time.Sleep(1000 * time.Millisecond) - for i := 0; i <= maxproxyattempts; i++ { - _, err := http.Get("http://127.0.0.1:8504/bzzr:/" + common.ToHex(key[0])[2:] + "/a") - if i == maxproxyattempts { - t.Fatalf("Failed to connect to proxy after %v attempts: %v", i, err) - } else if err != nil { - time.Sleep(100 * time.Millisecond) - continue - } - break + _, err = http.Get(srv.URL + "/bzzr:/" + common.ToHex(key[0])[2:] + "/a") + if err != nil { + t.Fatalf("Failed to connect to proxy: %v", err) } for k, v := range testrequests { var resp *http.Response var respbody []byte - url := "http://127.0.0.1:8504/bzzr:/" + url := srv.URL + "/bzzr:/" if k[:] != "" { url += common.ToHex(key[0])[2:] + "/" + k[1:] + "?content_type=text/plain" } diff --git a/swarm/swarm.go b/swarm/swarm.go index 0ce31bcad9..add28d205d 100644 --- a/swarm/swarm.go +++ b/swarm/swarm.go @@ -195,7 +195,10 @@ func (self *Swarm) Start(net *p2p.Server) error { // start swarm http proxy server if self.config.Port != "" { addr := ":" + self.config.Port - go httpapi.StartHttpServer(self.api, &httpapi.Server{Addr: addr, CorsString: self.corsString}) + go httpapi.StartHttpServer(self.api, &httpapi.ServerConfig{ + Addr: addr, + CorsString: self.corsString, + }) } log.Debug(fmt.Sprintf("Swarm http proxy started on port: %v", self.config.Port)) diff --git a/swarm/testutil/http.go b/swarm/testutil/http.go new file mode 100644 index 0000000000..bf98d16eb2 --- /dev/null +++ b/swarm/testutil/http.go @@ -0,0 +1,56 @@ +package testutil + +import ( + "io/ioutil" + "net/http/httptest" + "os" + "testing" + + "github.com/ethereum/go-ethereum/swarm/api" + httpapi "github.com/ethereum/go-ethereum/swarm/api/http" + "github.com/ethereum/go-ethereum/swarm/storage" +) + +func NewTestSwarmServer(t *testing.T) *TestSwarmServer { + dir, err := ioutil.TempDir("", "swarm-storage-test") + if err != nil { + t.Fatal(err) + } + storeparams := &storage.StoreParams{ + ChunkDbPath: dir, + DbCapacity: 5000000, + CacheCapacity: 5000, + Radius: 0, + } + localStore, err := storage.NewLocalStore(storage.MakeHashFunc("SHA3"), storeparams) + if err != nil { + os.RemoveAll(dir) + t.Fatal(err) + } + chunker := storage.NewTreeChunker(storage.NewChunkerParams()) + dpa := &storage.DPA{ + Chunker: chunker, + ChunkStore: localStore, + } + dpa.Start() + a := api.NewApi(dpa, nil) + srv := httptest.NewServer(httpapi.NewServer(a)) + return &TestSwarmServer{ + Server: srv, + Dpa: dpa, + dir: dir, + } +} + +type TestSwarmServer struct { + *httptest.Server + + Dpa *storage.DPA + dir string +} + +func (t *TestSwarmServer) Close() { + t.Server.Close() + t.Dpa.Stop() + os.RemoveAll(t.dir) +} From 49437a02c981199c62048fae00c6b80976f6e6b9 Mon Sep 17 00:00:00 2001 From: gary rong Date: Wed, 5 Apr 2017 06:44:16 +0800 Subject: [PATCH 56/57] core/state: make TestSnapshotRandom work again (#3816) In `touch` operation, only `touched` filed has been changed. Therefore in the related undo function, only `touched` field should be reverted. In addition, whether remove this obj from dirty map should depend on prevDirty flag. --- core/state/journal.go | 7 +++++-- core/state/state_object.go | 5 +++-- core/state/statedb_test.go | 1 - 3 files changed, 8 insertions(+), 5 deletions(-) diff --git a/core/state/journal.go b/core/state/journal.go index 5cd41477d9..73218dd283 100644 --- a/core/state/journal.go +++ b/core/state/journal.go @@ -73,6 +73,7 @@ type ( touchChange struct { account *common.Address prev bool + prevDirty bool } ) @@ -97,8 +98,10 @@ var ripemd = common.HexToAddress("0000000000000000000000000000000000000003") func (ch touchChange) undo(s *StateDB) { if !ch.prev && *ch.account != ripemd { - delete(s.stateObjects, *ch.account) - delete(s.stateObjectsDirty, *ch.account) + s.getStateObject(*ch.account).touched = ch.prev + if !ch.prevDirty { + delete(s.stateObjectsDirty, *ch.account) + } } } diff --git a/core/state/state_object.go b/core/state/state_object.go index 7f994ee6d6..7d33153037 100644 --- a/core/state/state_object.go +++ b/core/state/state_object.go @@ -137,8 +137,9 @@ func (self *stateObject) markSuicided() { func (c *stateObject) touch() { c.db.journal = append(c.db.journal, touchChange{ - account: &c.address, - prev: c.touched, + account: &c.address, + prev: c.touched, + prevDirty: c.onDirty == nil, }) if c.onDirty != nil { c.onDirty(c.Address()) diff --git a/core/state/statedb_test.go b/core/state/statedb_test.go index 597de3be53..72b638f970 100644 --- a/core/state/statedb_test.go +++ b/core/state/statedb_test.go @@ -116,7 +116,6 @@ func TestIntermediateLeaks(t *testing.T) { } func TestSnapshotRandom(t *testing.T) { - t.Skip("@fjl fix me please") config := &quick.Config{MaxCount: 1000} err := quick.Check((*snapshotTest).run, config) if cerr, ok := err.(*quick.CheckError); ok { From cc303017c3f145441e583b5bb10ee3070b44cc50 Mon Sep 17 00:00:00 2001 From: Martin Holst Swende Date: Wed, 5 Apr 2017 17:49:54 +0200 Subject: [PATCH 57/57] debug: convert uint64-blocknumber into rpc.Blocknumber (#13862) * debug: Converted uint64-blocknumber into rpc.Blocknumber * api/debug: Fix pending block issues in DumpBlock --- eth/api.go | 35 +++++++++++++++++++++++++++++------ 1 file changed, 29 insertions(+), 6 deletions(-) diff --git a/eth/api.go b/eth/api.go index 58ae27df23..041ccd397e 100644 --- a/eth/api.go +++ b/eth/api.go @@ -40,6 +40,7 @@ import ( "github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/rlp" + "github.com/ethereum/go-ethereum/rpc" ) const defaultTraceTimeout = 5 * time.Second @@ -293,10 +294,22 @@ func NewPublicDebugAPI(eth *Ethereum) *PublicDebugAPI { } // DumpBlock retrieves the entire state of the database at a given block. -func (api *PublicDebugAPI) DumpBlock(number uint64) (state.Dump, error) { - block := api.eth.BlockChain().GetBlockByNumber(number) +func (api *PublicDebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error) { + if blockNr == rpc.PendingBlockNumber { + // If we're dumping the pending state, we need to request + // both the pending block as well as the pending state from + // the miner and operate on those + _, stateDb := api.eth.miner.Pending() + return stateDb.RawDump(), nil + } + var block *types.Block + if blockNr == rpc.LatestBlockNumber { + block = api.eth.blockchain.CurrentBlock() + } else { + block = api.eth.blockchain.GetBlockByNumber(uint64(blockNr)) + } if block == nil { - return state.Dump{}, fmt.Errorf("block #%d not found", number) + return state.Dump{}, fmt.Errorf("block #%d not found", blockNr) } stateDb, err := api.eth.BlockChain().StateAt(block.Root()) if err != nil { @@ -361,11 +374,21 @@ func (api *PrivateDebugAPI) TraceBlockFromFile(file string, config *vm.LogConfig } // TraceBlockByNumber processes the block by canonical block number. -func (api *PrivateDebugAPI) TraceBlockByNumber(number uint64, config *vm.LogConfig) BlockTraceResult { +func (api *PrivateDebugAPI) TraceBlockByNumber(blockNr rpc.BlockNumber, config *vm.LogConfig) BlockTraceResult { // Fetch the block that we aim to reprocess - block := api.eth.BlockChain().GetBlockByNumber(number) + var block *types.Block + switch blockNr { + case rpc.PendingBlockNumber: + // Pending block is only known by the miner + block = api.eth.miner.PendingBlock() + case rpc.LatestBlockNumber: + block = api.eth.blockchain.CurrentBlock() + default: + block = api.eth.blockchain.GetBlockByNumber(uint64(blockNr)) + } + if block == nil { - return BlockTraceResult{Error: fmt.Sprintf("block #%d not found", number)} + return BlockTraceResult{Error: fmt.Sprintf("block #%d not found", blockNr)} } validated, logs, err := api.traceBlock(block, config)