mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-08-19 18:32:23 +00:00
move multicall logic to struct
This commit is contained in:
Sina Mahmoodi
parent
2690445207
commit
d1ce690e76
2 changed files with 350 additions and 306 deletions
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@ -19,7 +19,6 @@ package ethapi
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import (
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import (
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"context"
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"context"
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"encoding/hex"
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"encoding/hex"
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"encoding/json"
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"errors"
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"errors"
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"fmt"
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"fmt"
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"math/big"
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"math/big"
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@ -1222,62 +1221,6 @@ func (s *BlockChainAPI) Call(ctx context.Context, args TransactionArgs, blockNrO
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return result.Return(), result.Err
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return result.Return(), result.Err
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}
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}
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// CallBatch is a batch of calls to be simulated sequentially.
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type CallBatch struct {
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BlockOverrides *BlockOverrides
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StateOverrides *StateOverride
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Calls []TransactionArgs
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}
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type blockResult struct {
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Number hexutil.Uint64 `json:"number"`
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Hash common.Hash `json:"hash"`
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Time hexutil.Uint64 `json:"timestamp"`
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GasLimit hexutil.Uint64 `json:"gasLimit"`
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GasUsed hexutil.Uint64 `json:"gasUsed"`
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FeeRecipient common.Address `json:"feeRecipient"`
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BaseFee *hexutil.Big `json:"baseFeePerGas"`
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PrevRandao common.Hash `json:"prevRandao"`
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Calls []callResult `json:"calls"`
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}
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func mcBlockResultFromHeader(header *types.Header, callResults []callResult) blockResult {
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return blockResult{
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Number: hexutil.Uint64(header.Number.Uint64()),
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Hash: header.Hash(),
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Time: hexutil.Uint64(header.Time),
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GasLimit: hexutil.Uint64(header.GasLimit),
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GasUsed: hexutil.Uint64(header.GasUsed),
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FeeRecipient: header.Coinbase,
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BaseFee: (*hexutil.Big)(header.BaseFee),
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PrevRandao: header.MixDigest,
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Calls: callResults,
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}
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}
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type callResult struct {
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ReturnValue hexutil.Bytes `json:"returnData"`
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Logs []*types.Log `json:"logs"`
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GasUsed hexutil.Uint64 `json:"gasUsed"`
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Status hexutil.Uint64 `json:"status"`
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Error *callError `json:"error,omitempty"`
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}
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func (r *callResult) MarshalJSON() ([]byte, error) {
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type callResultAlias callResult
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// Marshal logs to be an empty array instead of nil when empty
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if r.Logs == nil {
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r.Logs = []*types.Log{}
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}
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return json.Marshal((*callResultAlias)(r))
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}
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type multicallOpts struct {
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BlockStateCalls []CallBatch
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TraceTransfers bool
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Validation bool
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}
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// MulticallV1 executes series of transactions on top of a base state.
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// MulticallV1 executes series of transactions on top of a base state.
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// The transactions are packed into blocks. For each block, block header
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// The transactions are packed into blocks. For each block, block header
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// fields can be overridden. The state can also be overridden prior to
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// fields can be overridden. The state can also be overridden prior to
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@ -1290,255 +1233,8 @@ func (s *BlockChainAPI) MulticallV1(ctx context.Context, opts multicallOpts, blo
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n := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber)
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n := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber)
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blockNrOrHash = &n
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blockNrOrHash = &n
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}
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}
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state, base, err := s.b.StateAndHeaderByNumberOrHash(ctx, *blockNrOrHash)
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mc := &multicall{b: s.b, blockNrOrHash: *blockNrOrHash}
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if state == nil || err != nil {
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return mc.execute(ctx, opts)
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return nil, err
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}
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// Setup context so it may be cancelled before the calls completed
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// or, in case of unmetered gas, setup a context with a timeout.
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var (
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cancel context.CancelFunc
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timeout = s.b.RPCEVMTimeout()
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blocks = opts.BlockStateCalls
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)
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if timeout > 0 {
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ctx, cancel = context.WithTimeout(ctx, timeout)
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} else {
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ctx, cancel = context.WithCancel(ctx)
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}
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// Make sure the context is cancelled when the call has completed
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// this makes sure resources are cleaned up.
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defer cancel()
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headers, err := makeHeaders(ctx, s.b.ChainConfig(), blocks, base)
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if err != nil {
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return nil, err
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}
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var (
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results = make([]blockResult, len(blocks))
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// Each tx and all the series of txes shouldn't consume more gas than cap
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globalGasCap = s.b.RPCGasCap()
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gp = new(core.GasPool).AddGas(globalGasCap)
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header = base
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blockContext = core.NewEVMBlockContext(header, NewChainContext(ctx, s.b), nil)
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rules = s.b.ChainConfig().Rules(blockContext.BlockNumber, blockContext.Random != nil, blockContext.Time)
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precompiles = vm.ActivePrecompiledContracts(rules).Copy()
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numHashes = headers[len(headers)-1].Number.Uint64() - base.Number.Uint64() + 256
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// Cache for the block hashes.
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hashes = make([]common.Hash, numHashes)
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)
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for bi, block := range blocks {
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header = headers[bi]
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blockContext = core.NewEVMBlockContext(header, NewChainContext(ctx, s.b), nil)
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// Respond to BLOCKHASH requests.
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blockContext.GetHash = func(n uint64) common.Hash {
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var (
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h common.Hash
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err error
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)
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h, hashes, err = getHash(ctx, n, base, headers, s.b, hashes)
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if err != nil {
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log.Warn(err.Error())
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return common.Hash{}
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}
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return h
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}
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// State overrides are applied prior to execution of a block
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if err := block.StateOverrides.Apply(state, precompiles); err != nil {
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return nil, err
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}
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var (
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gasUsed uint64
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txes = make([]*types.Transaction, len(block.Calls))
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callResults = make([]callResult, len(block.Calls))
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)
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for i, call := range block.Calls {
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if call.Nonce == nil {
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nonce := state.GetNonce(call.from())
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call.Nonce = (*hexutil.Uint64)(&nonce)
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}
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// Let the call run wild unless explicitly specified.
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if call.Gas == nil {
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remaining := blockContext.GasLimit - gasUsed
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call.Gas = (*hexutil.Uint64)(&remaining)
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}
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if call.GasPrice == nil && call.MaxFeePerGas == nil && call.MaxPriorityFeePerGas == nil {
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call.MaxFeePerGas = (*hexutil.Big)(big.NewInt(0))
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call.MaxPriorityFeePerGas = (*hexutil.Big)(big.NewInt(0))
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}
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// TODO: check chainID and against current header for london fees
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if err := call.validateAll(); err != nil {
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return nil, err
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}
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tx := call.ToTransaction(true)
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txes[i] = tx
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// TODO: repair log block hashes post execution.
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vmConfig := &vm.Config{
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NoBaseFee: true,
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// Block hash will be repaired after execution.
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Tracer: newTracer(opts.TraceTransfers, blockContext.BlockNumber.Uint64(), common.Hash{}, tx.Hash(), uint(i)),
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}
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result, err := applyMessage(ctx, s.b, call, state, header, timeout, gp, &blockContext, vmConfig, precompiles, opts.Validation)
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if err != nil {
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callErr := callErrorFromError(err)
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callResults[i] = callResult{Error: callErr, Status: hexutil.Uint64(types.ReceiptStatusFailed)}
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continue
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}
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// If the result contains a revert reason, try to unpack it.
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if len(result.Revert()) > 0 {
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result.Err = newRevertError(result)
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}
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logs := vmConfig.Tracer.(*tracer).Logs()
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callRes := callResult{ReturnValue: result.Return(), Logs: logs, GasUsed: hexutil.Uint64(result.UsedGas)}
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if result.Failed() {
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callRes.Status = hexutil.Uint64(types.ReceiptStatusFailed)
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if errors.Is(result.Err, vm.ErrExecutionReverted) {
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callRes.Error = &callError{Message: result.Err.Error(), Code: -32000}
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} else {
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callRes.Error = &callError{Message: result.Err.Error(), Code: -32015}
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}
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} else {
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callRes.Status = hexutil.Uint64(types.ReceiptStatusSuccessful)
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}
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callResults[i] = callRes
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gasUsed += result.UsedGas
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state.Finalise(true)
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}
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var (
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parentHash common.Hash
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err error
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)
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parentHash, hashes, err = getHash(ctx, header.Number.Uint64()-1, base, headers, s.b, hashes)
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if err != nil {
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return nil, err
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}
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header.ParentHash = parentHash
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header.Root = state.IntermediateRoot(true)
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header.GasUsed = gasUsed
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header.TxHash = types.DeriveSha(types.Transactions(txes), trie.NewStackTrie(nil))
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results[bi] = mcBlockResultFromHeader(header, callResults)
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repairLogs(results, header.Hash())
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}
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return results, nil
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}
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// getHash returns the hash for the block of the given number. Block can be
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// part of the canonical chain, a simulated block or a phantom block.
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// Note getHash assumes `n` is smaller than the last already simulated block
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// and smaller than the last block to be simulated.
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func getHash(ctx context.Context, n uint64, base *types.Header, headers []*types.Header, backend Backend, hashes []common.Hash) (common.Hash, []common.Hash, error) {
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// getIndex returns the index of the hash in the hashes cache.
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// The cache potentially includes 255 blocks prior to the base.
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getIndex := func(n uint64) int {
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first := base.Number.Uint64() - 255
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return int(n - first)
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}
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index := getIndex(n)
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if h := hashes[index]; h != (common.Hash{}) {
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return h, hashes, nil
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}
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h, err := computeHash(ctx, n, base, headers, backend, hashes)
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if err != nil {
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return common.Hash{}, hashes, err
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}
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if h != (common.Hash{}) {
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hashes[index] = h
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}
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return h, hashes, nil
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}
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func computeHash(ctx context.Context, n uint64, base *types.Header, headers []*types.Header, backend Backend, hashes []common.Hash) (common.Hash, error) {
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if n == base.Number.Uint64() {
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return base.Hash(), nil
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} else if n < base.Number.Uint64() {
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h, err := backend.HeaderByNumber(ctx, rpc.BlockNumber(n))
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if err != nil {
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return common.Hash{}, fmt.Errorf("failed to load block hash for number %d. Err: %v\n", n, err)
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}
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return h.Hash(), nil
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}
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h := base
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for i, _ := range headers {
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tmp := headers[i]
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// BLOCKHASH will only allow numbers prior to current block
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// so no need to check that condition.
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if tmp.Number.Uint64() == n {
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hash := tmp.Hash()
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return hash, nil
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} else if tmp.Number.Uint64() > n {
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// Phantom block.
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lastNonPhantomHash, _, err := getHash(ctx, h.Number.Uint64(), base, headers, backend, hashes)
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if err != nil {
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return common.Hash{}, err
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}
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// keccak(rlp(lastNonPhantomBlockHash, blockNumber))
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hashData, err := rlp.EncodeToBytes([][]byte{lastNonPhantomHash.Bytes(), big.NewInt(int64(n)).Bytes()})
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if err != nil {
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return common.Hash{}, err
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}
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return crypto.Keccak256Hash(hashData), nil
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}
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h = tmp
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}
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return common.Hash{}, errors.New("requested block is in future")
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}
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// repairLogs updates the block hash in the logs present in a multicall
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// result object. This is needed as during execution when logs are collected
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// the block hash is not known.
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func repairLogs(results []blockResult, blockHash common.Hash) {
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for i := range results {
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for j := range results[i].Calls {
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for k := range results[i].Calls[j].Logs {
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results[i].Calls[j].Logs[k].BlockHash = blockHash
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}
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}
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}
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}
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func makeHeaders(ctx context.Context, config *params.ChainConfig, blocks []CallBatch, base *types.Header) ([]*types.Header, error) {
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res := make([]*types.Header, len(blocks))
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var (
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prevNumber = base.Number.Uint64()
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prevTimestamp = base.Time
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header = base
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)
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for bi, block := range blocks {
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overrides := new(BlockOverrides)
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if block.BlockOverrides != nil {
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overrides = block.BlockOverrides
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}
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// Sanitize block number and timestamp
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if overrides.Number == nil {
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n := new(big.Int).Add(big.NewInt(int64(prevNumber)), big.NewInt(1))
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overrides.Number = (*hexutil.Big)(n)
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} else if overrides.Number.ToInt().Uint64() <= prevNumber {
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return nil, fmt.Errorf("block numbers must be in order")
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}
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prevNumber = overrides.Number.ToInt().Uint64()
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if overrides.Time == nil {
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t := prevTimestamp + 1
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overrides.Time = (*hexutil.Uint64)(&t)
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} else if time := (*uint64)(overrides.Time); *time <= prevTimestamp {
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return nil, fmt.Errorf("timestamps must be in order")
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}
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prevTimestamp = uint64(*overrides.Time)
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var baseFee *big.Int
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if config.IsLondon(overrides.Number.ToInt()) {
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baseFee = eip1559.CalcBaseFee(config, header)
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}
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header = &types.Header{
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UncleHash: types.EmptyUncleHash,
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Coinbase: base.Coinbase,
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Difficulty: base.Difficulty,
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GasLimit: base.GasLimit,
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//MixDigest: header.MixDigest,
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BaseFee: baseFee,
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}
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overrides.ApplyToHeader(header)
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res[bi] = header
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}
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return res, nil
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}
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}
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// executeEstimate is a helper that executes the transaction under a given gas limit and returns
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// executeEstimate is a helper that executes the transaction under a given gas limit and returns
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348
internal/ethapi/multicall.go
Normal file
348
internal/ethapi/multicall.go
Normal file
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@ -0,0 +1,348 @@
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// 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 ethapi
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|
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import (
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"context"
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"encoding/json"
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|
"errors"
|
||||||
|
"fmt"
|
||||||
|
"math/big"
|
||||||
|
|
||||||
|
"github.com/ethereum/go-ethereum/common"
|
||||||
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
||||||
|
"github.com/ethereum/go-ethereum/consensus/misc/eip1559"
|
||||||
|
"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/crypto"
|
||||||
|
"github.com/ethereum/go-ethereum/log"
|
||||||
|
"github.com/ethereum/go-ethereum/params"
|
||||||
|
"github.com/ethereum/go-ethereum/rlp"
|
||||||
|
"github.com/ethereum/go-ethereum/rpc"
|
||||||
|
"github.com/ethereum/go-ethereum/trie"
|
||||||
|
)
|
||||||
|
|
||||||
|
// CallBatch is a batch of calls to be simulated sequentially.
|
||||||
|
type CallBatch struct {
|
||||||
|
BlockOverrides *BlockOverrides
|
||||||
|
StateOverrides *StateOverride
|
||||||
|
Calls []TransactionArgs
|
||||||
|
}
|
||||||
|
|
||||||
|
type blockResult struct {
|
||||||
|
Number hexutil.Uint64 `json:"number"`
|
||||||
|
Hash common.Hash `json:"hash"`
|
||||||
|
Time hexutil.Uint64 `json:"timestamp"`
|
||||||
|
GasLimit hexutil.Uint64 `json:"gasLimit"`
|
||||||
|
GasUsed hexutil.Uint64 `json:"gasUsed"`
|
||||||
|
FeeRecipient common.Address `json:"feeRecipient"`
|
||||||
|
BaseFee *hexutil.Big `json:"baseFeePerGas"`
|
||||||
|
PrevRandao common.Hash `json:"prevRandao"`
|
||||||
|
Calls []callResult `json:"calls"`
|
||||||
|
}
|
||||||
|
|
||||||
|
func mcBlockResultFromHeader(header *types.Header, callResults []callResult) blockResult {
|
||||||
|
return blockResult{
|
||||||
|
Number: hexutil.Uint64(header.Number.Uint64()),
|
||||||
|
Hash: header.Hash(),
|
||||||
|
Time: hexutil.Uint64(header.Time),
|
||||||
|
GasLimit: hexutil.Uint64(header.GasLimit),
|
||||||
|
GasUsed: hexutil.Uint64(header.GasUsed),
|
||||||
|
FeeRecipient: header.Coinbase,
|
||||||
|
BaseFee: (*hexutil.Big)(header.BaseFee),
|
||||||
|
PrevRandao: header.MixDigest,
|
||||||
|
Calls: callResults,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
type callResult struct {
|
||||||
|
ReturnValue hexutil.Bytes `json:"returnData"`
|
||||||
|
Logs []*types.Log `json:"logs"`
|
||||||
|
GasUsed hexutil.Uint64 `json:"gasUsed"`
|
||||||
|
Status hexutil.Uint64 `json:"status"`
|
||||||
|
Error *callError `json:"error,omitempty"`
|
||||||
|
}
|
||||||
|
|
||||||
|
func (r *callResult) MarshalJSON() ([]byte, error) {
|
||||||
|
type callResultAlias callResult
|
||||||
|
// Marshal logs to be an empty array instead of nil when empty
|
||||||
|
if r.Logs == nil {
|
||||||
|
r.Logs = []*types.Log{}
|
||||||
|
}
|
||||||
|
return json.Marshal((*callResultAlias)(r))
|
||||||
|
}
|
||||||
|
|
||||||
|
type multicallOpts struct {
|
||||||
|
BlockStateCalls []CallBatch
|
||||||
|
TraceTransfers bool
|
||||||
|
Validation bool
|
||||||
|
}
|
||||||
|
|
||||||
|
type multicall struct {
|
||||||
|
blockNrOrHash rpc.BlockNumberOrHash
|
||||||
|
b Backend
|
||||||
|
hashes []common.Hash
|
||||||
|
}
|
||||||
|
|
||||||
|
func (mc *multicall) execute(ctx context.Context, opts multicallOpts) ([]blockResult, error) {
|
||||||
|
state, base, err := mc.b.StateAndHeaderByNumberOrHash(ctx, mc.blockNrOrHash)
|
||||||
|
if state == nil || err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
// Setup context so it may be cancelled before the calls completed
|
||||||
|
// or, in case of unmetered gas, setup a context with a timeout.
|
||||||
|
var (
|
||||||
|
cancel context.CancelFunc
|
||||||
|
timeout = mc.b.RPCEVMTimeout()
|
||||||
|
blocks = opts.BlockStateCalls
|
||||||
|
)
|
||||||
|
if timeout > 0 {
|
||||||
|
ctx, cancel = context.WithTimeout(ctx, timeout)
|
||||||
|
} else {
|
||||||
|
ctx, cancel = context.WithCancel(ctx)
|
||||||
|
}
|
||||||
|
// Make sure the context is cancelled when the call has completed
|
||||||
|
// this makes sure resources are cleaned up.
|
||||||
|
defer cancel()
|
||||||
|
headers, err := makeHeaders(mc.b.ChainConfig(), blocks, base)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
var (
|
||||||
|
results = make([]blockResult, len(blocks))
|
||||||
|
// Each tx and all the series of txes shouldn't consume more gas than cap
|
||||||
|
globalGasCap = mc.b.RPCGasCap()
|
||||||
|
gp = new(core.GasPool).AddGas(globalGasCap)
|
||||||
|
header = base
|
||||||
|
blockContext = core.NewEVMBlockContext(header, NewChainContext(ctx, mc.b), nil)
|
||||||
|
rules = mc.b.ChainConfig().Rules(blockContext.BlockNumber, blockContext.Random != nil, blockContext.Time)
|
||||||
|
precompiles = vm.ActivePrecompiledContracts(rules).Copy()
|
||||||
|
numHashes = headers[len(headers)-1].Number.Uint64() - base.Number.Uint64() + 256
|
||||||
|
)
|
||||||
|
// Cache for the block hashes.
|
||||||
|
mc.hashes = make([]common.Hash, numHashes)
|
||||||
|
for bi, block := range blocks {
|
||||||
|
header = headers[bi]
|
||||||
|
blockContext = core.NewEVMBlockContext(header, NewChainContext(ctx, mc.b), nil)
|
||||||
|
// Respond to BLOCKHASH requests.
|
||||||
|
blockContext.GetHash = func(n uint64) common.Hash {
|
||||||
|
h, err := mc.getBlockHash(ctx, n, base, headers)
|
||||||
|
if err != nil {
|
||||||
|
log.Warn(err.Error())
|
||||||
|
return common.Hash{}
|
||||||
|
}
|
||||||
|
return h
|
||||||
|
}
|
||||||
|
// State overrides are applied prior to execution of a block
|
||||||
|
if err := block.StateOverrides.Apply(state, precompiles); err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
var (
|
||||||
|
gasUsed uint64
|
||||||
|
txes = make([]*types.Transaction, len(block.Calls))
|
||||||
|
callResults = make([]callResult, len(block.Calls))
|
||||||
|
)
|
||||||
|
for i, call := range block.Calls {
|
||||||
|
if call.Nonce == nil {
|
||||||
|
nonce := state.GetNonce(call.from())
|
||||||
|
call.Nonce = (*hexutil.Uint64)(&nonce)
|
||||||
|
}
|
||||||
|
// Let the call run wild unless explicitly specified.
|
||||||
|
if call.Gas == nil {
|
||||||
|
remaining := blockContext.GasLimit - gasUsed
|
||||||
|
call.Gas = (*hexutil.Uint64)(&remaining)
|
||||||
|
}
|
||||||
|
if call.GasPrice == nil && call.MaxFeePerGas == nil && call.MaxPriorityFeePerGas == nil {
|
||||||
|
call.MaxFeePerGas = (*hexutil.Big)(big.NewInt(0))
|
||||||
|
call.MaxPriorityFeePerGas = (*hexutil.Big)(big.NewInt(0))
|
||||||
|
}
|
||||||
|
// TODO: check chainID and against current header for london fees
|
||||||
|
if err := call.validateAll(); err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
tx := call.ToTransaction(true)
|
||||||
|
txes[i] = tx
|
||||||
|
// TODO: repair log block hashes post execution.
|
||||||
|
vmConfig := &vm.Config{
|
||||||
|
NoBaseFee: true,
|
||||||
|
// Block hash will be repaired after execution.
|
||||||
|
Tracer: newTracer(opts.TraceTransfers, blockContext.BlockNumber.Uint64(), common.Hash{}, tx.Hash(), uint(i)),
|
||||||
|
}
|
||||||
|
result, err := applyMessage(ctx, mc.b, call, state, header, timeout, gp, &blockContext, vmConfig, precompiles, opts.Validation)
|
||||||
|
if err != nil {
|
||||||
|
callErr := callErrorFromError(err)
|
||||||
|
callResults[i] = callResult{Error: callErr, Status: hexutil.Uint64(types.ReceiptStatusFailed)}
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
// If the result contains a revert reason, try to unpack it.
|
||||||
|
if len(result.Revert()) > 0 {
|
||||||
|
result.Err = newRevertError(result)
|
||||||
|
}
|
||||||
|
logs := vmConfig.Tracer.(*tracer).Logs()
|
||||||
|
callRes := callResult{ReturnValue: result.Return(), Logs: logs, GasUsed: hexutil.Uint64(result.UsedGas)}
|
||||||
|
if result.Failed() {
|
||||||
|
callRes.Status = hexutil.Uint64(types.ReceiptStatusFailed)
|
||||||
|
if errors.Is(result.Err, vm.ErrExecutionReverted) {
|
||||||
|
callRes.Error = &callError{Message: result.Err.Error(), Code: -32000}
|
||||||
|
} else {
|
||||||
|
callRes.Error = &callError{Message: result.Err.Error(), Code: -32015}
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
callRes.Status = hexutil.Uint64(types.ReceiptStatusSuccessful)
|
||||||
|
}
|
||||||
|
callResults[i] = callRes
|
||||||
|
gasUsed += result.UsedGas
|
||||||
|
state.Finalise(true)
|
||||||
|
}
|
||||||
|
var (
|
||||||
|
parentHash common.Hash
|
||||||
|
err error
|
||||||
|
)
|
||||||
|
parentHash, err = mc.getBlockHash(ctx, header.Number.Uint64()-1, base, headers)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
header.ParentHash = parentHash
|
||||||
|
header.Root = state.IntermediateRoot(true)
|
||||||
|
header.GasUsed = gasUsed
|
||||||
|
header.TxHash = types.DeriveSha(types.Transactions(txes), trie.NewStackTrie(nil))
|
||||||
|
results[bi] = mcBlockResultFromHeader(header, callResults)
|
||||||
|
repairLogs(results, header.Hash())
|
||||||
|
}
|
||||||
|
return results, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// getBlockHash returns the hash for the block of the given number. Block can be
|
||||||
|
// part of the canonical chain, a simulated block or a phantom block.
|
||||||
|
// Note getBlockHash assumes `n` is smaller than the last already simulated block
|
||||||
|
// and smaller than the last block to be simulated.
|
||||||
|
func (mc *multicall) getBlockHash(ctx context.Context, n uint64, base *types.Header, headers []*types.Header) (common.Hash, error) {
|
||||||
|
// getIndex returns the index of the hash in the hashes cache.
|
||||||
|
// The cache potentially includes 255 blocks prior to the base.
|
||||||
|
getIndex := func(n uint64) int {
|
||||||
|
first := base.Number.Uint64() - 255
|
||||||
|
return int(n - first)
|
||||||
|
}
|
||||||
|
index := getIndex(n)
|
||||||
|
if h := mc.hashes[index]; h != (common.Hash{}) {
|
||||||
|
return h, nil
|
||||||
|
}
|
||||||
|
h, err := mc.computeBlockHash(ctx, n, base, headers)
|
||||||
|
if err != nil {
|
||||||
|
return common.Hash{}, err
|
||||||
|
}
|
||||||
|
if h != (common.Hash{}) {
|
||||||
|
mc.hashes[index] = h
|
||||||
|
}
|
||||||
|
return h, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func (mc *multicall) computeBlockHash(ctx context.Context, n uint64, base *types.Header, headers []*types.Header) (common.Hash, error) {
|
||||||
|
if n == base.Number.Uint64() {
|
||||||
|
return base.Hash(), nil
|
||||||
|
} else if n < base.Number.Uint64() {
|
||||||
|
h, err := mc.b.HeaderByNumber(ctx, rpc.BlockNumber(n))
|
||||||
|
if err != nil {
|
||||||
|
return common.Hash{}, fmt.Errorf("failed to load block hash for number %d. Err: %v\n", n, err)
|
||||||
|
}
|
||||||
|
return h.Hash(), nil
|
||||||
|
}
|
||||||
|
h := base
|
||||||
|
for i, _ := range headers {
|
||||||
|
tmp := headers[i]
|
||||||
|
// BLOCKHASH will only allow numbers prior to current block
|
||||||
|
// so no need to check that condition.
|
||||||
|
if tmp.Number.Uint64() == n {
|
||||||
|
hash := tmp.Hash()
|
||||||
|
return hash, nil
|
||||||
|
} else if tmp.Number.Uint64() > n {
|
||||||
|
// Phantom block.
|
||||||
|
lastNonPhantomHash, err := mc.getBlockHash(ctx, h.Number.Uint64(), base, headers)
|
||||||
|
if err != nil {
|
||||||
|
return common.Hash{}, err
|
||||||
|
}
|
||||||
|
// keccak(rlp(lastNonPhantomBlockHash, blockNumber))
|
||||||
|
hashData, err := rlp.EncodeToBytes([][]byte{lastNonPhantomHash.Bytes(), big.NewInt(int64(n)).Bytes()})
|
||||||
|
if err != nil {
|
||||||
|
return common.Hash{}, err
|
||||||
|
}
|
||||||
|
return crypto.Keccak256Hash(hashData), nil
|
||||||
|
}
|
||||||
|
h = tmp
|
||||||
|
}
|
||||||
|
return common.Hash{}, errors.New("requested block is in future")
|
||||||
|
}
|
||||||
|
|
||||||
|
// repairLogs updates the block hash in the logs present in a multicall
|
||||||
|
// result object. This is needed as during execution when logs are collected
|
||||||
|
// the block hash is not known.
|
||||||
|
func repairLogs(results []blockResult, blockHash common.Hash) {
|
||||||
|
for i := range results {
|
||||||
|
for j := range results[i].Calls {
|
||||||
|
for k := range results[i].Calls[j].Logs {
|
||||||
|
results[i].Calls[j].Logs[k].BlockHash = blockHash
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
func makeHeaders(config *params.ChainConfig, blocks []CallBatch, base *types.Header) ([]*types.Header, error) {
|
||||||
|
res := make([]*types.Header, len(blocks))
|
||||||
|
var (
|
||||||
|
prevNumber = base.Number.Uint64()
|
||||||
|
prevTimestamp = base.Time
|
||||||
|
header = base
|
||||||
|
)
|
||||||
|
for bi, block := range blocks {
|
||||||
|
overrides := new(BlockOverrides)
|
||||||
|
if block.BlockOverrides != nil {
|
||||||
|
overrides = block.BlockOverrides
|
||||||
|
}
|
||||||
|
// Sanitize block number and timestamp
|
||||||
|
if overrides.Number == nil {
|
||||||
|
n := new(big.Int).Add(big.NewInt(int64(prevNumber)), big.NewInt(1))
|
||||||
|
overrides.Number = (*hexutil.Big)(n)
|
||||||
|
} else if overrides.Number.ToInt().Uint64() <= prevNumber {
|
||||||
|
return nil, fmt.Errorf("block numbers must be in order")
|
||||||
|
}
|
||||||
|
prevNumber = overrides.Number.ToInt().Uint64()
|
||||||
|
|
||||||
|
if overrides.Time == nil {
|
||||||
|
t := prevTimestamp + 1
|
||||||
|
overrides.Time = (*hexutil.Uint64)(&t)
|
||||||
|
} else if time := (*uint64)(overrides.Time); *time <= prevTimestamp {
|
||||||
|
return nil, fmt.Errorf("timestamps must be in order")
|
||||||
|
}
|
||||||
|
prevTimestamp = uint64(*overrides.Time)
|
||||||
|
|
||||||
|
var baseFee *big.Int
|
||||||
|
if config.IsLondon(overrides.Number.ToInt()) {
|
||||||
|
baseFee = eip1559.CalcBaseFee(config, header)
|
||||||
|
}
|
||||||
|
header = &types.Header{
|
||||||
|
UncleHash: types.EmptyUncleHash,
|
||||||
|
Coinbase: base.Coinbase,
|
||||||
|
Difficulty: base.Difficulty,
|
||||||
|
GasLimit: base.GasLimit,
|
||||||
|
//MixDigest: header.MixDigest,
|
||||||
|
BaseFee: baseFee,
|
||||||
|
}
|
||||||
|
overrides.ApplyToHeader(header)
|
||||||
|
res[bi] = header
|
||||||
|
}
|
||||||
|
return res, nil
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue