mirror of
https://github.com/ethereum/go-ethereum.git
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310 lines
10 KiB
Go
Executable file
310 lines
10 KiB
Go
Executable file
// Copyright 2023 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"fmt"
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"math/big"
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"sync"
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"github.com/ethereum/go-ethereum/beacon/light"
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"github.com/ethereum/go-ethereum/beacon/light/request"
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lsync "github.com/ethereum/go-ethereum/beacon/light/sync"
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"github.com/ethereum/go-ethereum/beacon/light/types"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/lru"
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ctypes "github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/ethereum/go-ethereum/trie"
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"github.com/holiman/uint256"
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"github.com/protolambda/zrnt/eth2/beacon/capella"
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"github.com/protolambda/zrnt/eth2/configs"
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"github.com/protolambda/ztyp/tree"
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)
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const reverseSyncHeaders = 128
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type beaconBlockServer interface {
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request.RequestServer
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RequestBeaconBlock(blockRoot common.Hash, response func(*capella.BeaconBlock))
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}
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type beaconBlockSync struct {
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lock sync.Mutex
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reqLock request.MultiLock
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recentBlocks *lru.Cache[common.Hash, *capella.BeaconBlock]
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headUpdater *lsync.HeadUpdater
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lightChain *light.LightChain
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validatedHead types.Header
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headBlock *capella.BeaconBlock // belongs to validatedHead (or nil)
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headBlockTrigger, prefetchHeaderTrigger *request.ModuleTrigger
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}
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func newBeaconBlockSyncer(lightChain *light.LightChain) *beaconBlockSync {
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return &beaconBlockSync{
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lightChain: lightChain,
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recentBlocks: lru.NewCache[common.Hash, *capella.BeaconBlock](10),
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}
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}
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// SetupModuleTriggers implements request.Module
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func (s *beaconBlockSync) SetupModuleTriggers(trigger func(id string, subscribe bool) *request.ModuleTrigger) {
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s.reqLock.Trigger = trigger("beaconBlockSync", true)
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trigger("validatedHead", true)
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s.headBlockTrigger = trigger("headBlock", false)
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s.prefetchHeaderTrigger = trigger("prefetchHeader", false)
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}
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// Process implements request.Module
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func (s *beaconBlockSync) Process(env *request.Environment) {
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s.lock.Lock()
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defer s.lock.Unlock()
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validatedHead := env.ValidatedHead()
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if validatedHead == (types.Header{}) {
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return
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}
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if validatedHead != s.validatedHead {
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s.validatedHead = validatedHead
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s.headBlock = nil
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if block, ok := s.recentBlocks.Get(validatedHead.Hash()); ok {
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s.headBlock = block
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s.headBlockTrigger.Trigger()
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}
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}
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if !env.CanRequestNow() {
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return
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}
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if s.headBlock == nil && s.validatedHead != (types.Header{}) {
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s.tryRequestBlock(env, s.validatedHead.Hash(), false)
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}
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prefetchHead := env.PrefetchHead()
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if _, ok := s.recentBlocks.Get(prefetchHead); !ok {
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s.tryRequestBlock(env, prefetchHead, true)
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}
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}
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func (s *beaconBlockSync) getHeadBlock() *capella.BeaconBlock {
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s.lock.Lock()
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defer s.lock.Unlock()
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return s.headBlock
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}
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func (s *beaconBlockSync) tryRequestBlock(env *request.Environment, blockRoot common.Hash, prefetch bool) {
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if !s.reqLock.CanRequest(blockRoot) {
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return
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}
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env.TryRequest(blockRequest{
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beaconBlockSync: s,
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blockRoot: blockRoot,
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prefetch: prefetch,
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})
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}
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type blockRequest struct {
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*beaconBlockSync
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blockRoot common.Hash
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prefetch bool
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}
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func (r blockRequest) CanSendTo(server *request.Server, moduleData *interface{}) (canSend bool, priority uint64) {
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if _, ok := server.RequestServer.(beaconBlockServer); !ok {
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return false, 0
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}
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if !r.prefetch {
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return true, 0
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}
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_, headRoot := server.LatestHead()
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return r.blockRoot == headRoot, 0
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}
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func (r blockRequest) SendTo(server *request.Server, moduleData *interface{}) {
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reqId := r.reqLock.Send(server, r.blockRoot)
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server.RequestServer.(beaconBlockServer).RequestBeaconBlock(r.blockRoot, func(block *capella.BeaconBlock) {
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r.lock.Lock()
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defer r.lock.Unlock()
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r.reqLock.Returned(server, reqId, r.blockRoot)
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if block == nil {
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server.Fail("error retrieving beacon block")
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return
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}
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r.recentBlocks.Add(r.blockRoot, block)
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if !r.lightChain.HasHeader(r.blockRoot) {
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r.lightChain.AddHeader(types.Header{
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Slot: uint64(block.Slot),
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ProposerIndex: uint64(block.ProposerIndex),
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ParentRoot: common.Hash(block.ParentRoot),
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StateRoot: common.Hash(block.StateRoot),
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BodyRoot: common.Hash(block.Body.HashTreeRoot(configs.Mainnet, tree.GetHashFn())),
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})
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r.prefetchHeaderTrigger.Trigger()
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}
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if r.validatedHead.Hash() == r.blockRoot {
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r.headBlock = block
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r.headBlockTrigger.Trigger()
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}
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})
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}
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func getExecBlock(beaconBlock *capella.BeaconBlock) (*ctypes.Block, error) {
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payload := &beaconBlock.Body.ExecutionPayload
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txs := make([]*ctypes.Transaction, len(payload.Transactions))
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for i, opaqueTx := range payload.Transactions {
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var tx ctypes.Transaction
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if err := tx.UnmarshalBinary(opaqueTx); err != nil {
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return nil, fmt.Errorf("failed to parse tx %d: %v", i, err)
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}
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txs[i] = &tx
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}
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withdrawals := make([]*ctypes.Withdrawal, len(payload.Withdrawals))
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for i, w := range payload.Withdrawals {
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withdrawals[i] = &ctypes.Withdrawal{
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Index: uint64(w.Index),
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Validator: uint64(w.ValidatorIndex),
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Address: common.Address(w.Address),
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Amount: uint64(w.Amount),
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}
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}
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wroot := ctypes.DeriveSha(ctypes.Withdrawals(withdrawals), trie.NewStackTrie(nil))
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execHeader := &ctypes.Header{
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ParentHash: common.Hash(payload.ParentHash),
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UncleHash: ctypes.EmptyUncleHash,
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Coinbase: common.Address(payload.FeeRecipient),
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Root: common.Hash(payload.StateRoot),
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TxHash: ctypes.DeriveSha(ctypes.Transactions(txs), trie.NewStackTrie(nil)),
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ReceiptHash: common.Hash(payload.ReceiptsRoot),
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Bloom: ctypes.Bloom(payload.LogsBloom),
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Difficulty: common.Big0,
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Number: new(big.Int).SetUint64(uint64(payload.BlockNumber)),
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GasLimit: uint64(payload.GasLimit),
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GasUsed: uint64(payload.GasUsed),
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Time: uint64(payload.Timestamp),
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Extra: []byte(payload.ExtraData),
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MixDigest: common.Hash(payload.PrevRandao), // reused in merge
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Nonce: ctypes.BlockNonce{}, // zero
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BaseFee: (*uint256.Int)(&payload.BaseFeePerGas).ToBig(),
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WithdrawalsHash: &wroot,
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}
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execBlock := ctypes.NewBlockWithHeader(execHeader).WithBody(txs, nil).WithWithdrawals(withdrawals)
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if execBlockHash := execBlock.Hash(); execBlockHash != common.Hash(payload.BlockHash) {
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return nil, fmt.Errorf("Sanity check failed, payload hash does not match (expected %x, got %x)", common.Hash(payload.BlockHash), execBlockHash)
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}
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return execBlock, nil
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}
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type engineApiUpdater struct {
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client *rpc.Client
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lock sync.Mutex
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lastHead common.Hash
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headerSync *lsync.HeaderSync
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stateSync *lsync.StateSync
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blockSync *beaconBlockSync
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chain *light.LightChain
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updating bool
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selfTrigger *request.ModuleTrigger
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tailTarget uint64
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}
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// SetupModuleTriggers implements request.Module
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func (s *engineApiUpdater) SetupModuleTriggers(trigger func(id string, subscribe bool) *request.ModuleTrigger) {
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trigger("headBlock", true)
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trigger("headState", true)
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s.selfTrigger = trigger("engineApiUpdater", true)
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}
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// Process implements request.Module
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func (s *engineApiUpdater) Process(env *request.Environment) {
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s.lock.Lock()
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defer func() {
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s.headerSync.SetTailTarget(s.tailTarget)
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s.chain.Prune(s.tailTarget, true)
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s.lock.Unlock()
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}()
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if s.updating {
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return
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}
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headBlock := s.blockSync.getHeadBlock()
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if headBlock == nil {
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return
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}
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headRoot := common.Hash(headBlock.HashTreeRoot(configs.Mainnet, tree.GetHashFn()))
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if headRoot == s.lastHead {
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return
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}
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head, err := s.chain.GetHeaderByHash(headRoot)
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if err != nil {
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return
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}
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if uint64(headBlock.Slot) > s.tailTarget+reverseSyncHeaders {
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s.tailTarget = uint64(headBlock.Slot) - reverseSyncHeaders
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}
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var finalizedExecRoot common.Hash
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if state, err := s.chain.GetStateProof(head.Slot, head.StateRoot); err == nil {
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finalizedRoot := common.Hash(state.Values[finalizedBlockIndex])
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if finalized, err := s.chain.GetHeaderByHash(finalizedRoot); err == nil {
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if finalizedState, err := s.chain.GetStateProof(finalized.Slot, finalized.StateRoot); err == nil {
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finalizedExecRoot = common.Hash(finalizedState.Values[execBlockIndex])
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}
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if finalized.Slot > s.tailTarget {
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s.tailTarget = finalized.Slot
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}
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}
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} else {
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if s.stateSync.HeadSyncPossible() {
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return
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}
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}
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s.lastHead = headRoot
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execBlock, err := getExecBlock(headBlock)
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if err != nil {
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log.Error("Error extracting execution block from validated beacon block", "error", err)
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return
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}
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execRoot := execBlock.Hash()
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if s.client == nil { // dry run, no engine API specified
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log.Info("New execution block retrieved", "block number", execBlock.NumberU64(), "block hash", execRoot, "finalized block hash", finalizedExecRoot)
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} else {
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s.updating = true
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go func() {
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if status, err := callNewPayloadV2(s.client, execBlock); err == nil {
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log.Info("Successful NewPayload", "block number", execBlock.NumberU64(), "block hash", execRoot, "status", status)
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} else {
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log.Error("Failed NewPayload", "block number", execBlock.NumberU64(), "block hash", execRoot, "error", err)
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}
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if status, err := callForkchoiceUpdatedV1(s.client, execRoot, finalizedExecRoot); err == nil {
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log.Info("Successful ForkchoiceUpdated", "head", execRoot, "finalized", finalizedExecRoot, "status", status)
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} else {
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log.Error("Failed ForkchoiceUpdated", "head", execRoot, "finalized", finalizedExecRoot, "error", err)
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}
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s.lock.Lock()
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s.updating = false
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s.selfTrigger.Trigger()
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s.lock.Unlock()
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}()
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}
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}
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