erigon-pulse/core/blockchain.go
Nicolas Gotchac 961a0070cc
Fix trace error in Polygon | Pass Engin to the Base API (#6131)
So there is an issue with tracing certain blocks/transactions on
Polygon, for example:
```
> '{"method": "trace_transaction","params":["0xb198d93f640343a98f90d93aa2b74b4fc5c64f3a649f1608d2bfd1004f9dee0e"],"id":1,"jsonrpc":"2.0"}'
```
gives the error `first run for txIndex 1 error: insufficient funds for
gas * price + value: address 0x10AD27A96CDBffC90ab3b83bF695911426A69f5E
have 16927727762862809 want 17594166808296934`

The reason is that this transaction is from the author of the block,
which doesn't have enough ETH to pay for the gas fee + tx value if he's
not the block author receiving transactions fees.

The issue is that currently the APIs are using `ethash.NewFaker()`
Engine for running traces, etc. which doesn't know how to get the author
for a specific block (which is consensus dependant); as it was noting in
several TODO comments.

The fix is to pass the Engine to the BaseAPI, which can then be used to
create the right Block Context. I chose to split the current Engine
interface in 2, with Reader and Writer, so that the BaseAPI only
receives the Reader one, which might be safer (even though it's only
used for getting the block Author).
2022-12-04 12:17:39 +07:00

606 lines
21 KiB
Go

// 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 <http://www.gnu.org/licenses/>.
// Package core implements the Ethereum consensus protocol.
package core
import (
"fmt"
"time"
"github.com/ledgerwatch/erigon/core/systemcontracts"
"github.com/ledgerwatch/erigon/core/vm/evmtypes"
"github.com/ledgerwatch/erigon/rlp"
"golang.org/x/crypto/sha3"
"golang.org/x/exp/slices"
metrics2 "github.com/VictoriaMetrics/metrics"
"github.com/ledgerwatch/erigon/common"
"github.com/ledgerwatch/erigon/common/math"
"github.com/ledgerwatch/erigon/common/u256"
"github.com/ledgerwatch/erigon/consensus"
"github.com/ledgerwatch/erigon/consensus/misc"
"github.com/ledgerwatch/erigon/core/state"
"github.com/ledgerwatch/erigon/core/types"
"github.com/ledgerwatch/erigon/core/vm"
"github.com/ledgerwatch/erigon/params"
)
var (
BlockExecutionTimer = metrics2.GetOrCreateSummary("chain_execution_seconds")
)
type SyncMode string
const (
TriesInMemory = 128
)
type RejectedTx struct {
Index int `json:"index" gencodec:"required"`
Err string `json:"error" gencodec:"required"`
}
type RejectedTxs []*RejectedTx
type EphemeralExecResult struct {
StateRoot common.Hash `json:"stateRoot"`
TxRoot common.Hash `json:"txRoot"`
ReceiptRoot common.Hash `json:"receiptsRoot"`
LogsHash common.Hash `json:"logsHash"`
Bloom types.Bloom `json:"logsBloom" gencodec:"required"`
Receipts types.Receipts `json:"receipts"`
Rejected RejectedTxs `json:"rejected,omitempty"`
Difficulty *math.HexOrDecimal256 `json:"currentDifficulty" gencodec:"required"`
GasUsed math.HexOrDecimal64 `json:"gasUsed"`
StateSyncReceipt *types.Receipt `json:"-"`
}
func ExecuteBlockEphemerallyForBSC(
chainConfig *params.ChainConfig,
vmConfig *vm.Config,
blockHashFunc func(n uint64) common.Hash,
engine consensus.Engine,
block *types.Block,
stateReader state.StateReader,
stateWriter state.WriterWithChangeSets,
epochReader consensus.EpochReader,
chainReader consensus.ChainHeaderReader,
getTracer func(txIndex int, txHash common.Hash) (vm.Tracer, error),
) (*EphemeralExecResult, error) {
defer BlockExecutionTimer.UpdateDuration(time.Now())
block.Uncles()
ibs := state.New(stateReader)
header := block.Header()
usedGas := new(uint64)
gp := new(GasPool)
gp.AddGas(block.GasLimit())
var (
rejectedTxs []*RejectedTx
includedTxs types.Transactions
receipts types.Receipts
)
if !vmConfig.ReadOnly {
if err := InitializeBlockExecution(engine, chainReader, epochReader, block.Header(), block.Transactions(), block.Uncles(), chainConfig, ibs); err != nil {
return nil, err
}
}
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
misc.ApplyDAOHardFork(ibs)
}
systemcontracts.UpgradeBuildInSystemContract(chainConfig, header.Number, ibs)
noop := state.NewNoopWriter()
posa, isPoSA := engine.(consensus.PoSA)
//fmt.Printf("====txs processing start: %d====\n", block.NumberU64())
for i, tx := range block.Transactions() {
if isPoSA {
if isSystemTx, err := posa.IsSystemTransaction(tx, block.Header()); err != nil {
return nil, err
} else if isSystemTx {
continue
}
}
ibs.Prepare(tx.Hash(), block.Hash(), i)
writeTrace := false
if vmConfig.Debug && vmConfig.Tracer == nil {
tracer, err := getTracer(i, tx.Hash())
if err != nil {
return nil, fmt.Errorf("could not obtain tracer: %w", err)
}
vmConfig.Tracer = tracer
writeTrace = true
}
receipt, _, err := ApplyTransaction(chainConfig, blockHashFunc, engine, nil, gp, ibs, noop, header, tx, usedGas, *vmConfig)
if writeTrace {
if ftracer, ok := vmConfig.Tracer.(vm.FlushableTracer); ok {
ftracer.Flush(tx)
}
vmConfig.Tracer = nil
}
if err != nil {
if !vmConfig.StatelessExec {
return nil, fmt.Errorf("could not apply tx %d from block %d [%v]: %w", i, block.NumberU64(), tx.Hash().Hex(), err)
}
rejectedTxs = append(rejectedTxs, &RejectedTx{i, err.Error()})
} else {
includedTxs = append(includedTxs, tx)
if !vmConfig.NoReceipts {
receipts = append(receipts, receipt)
}
}
}
var newBlock *types.Block
var receiptSha common.Hash
if !vmConfig.ReadOnly {
// We're doing this hack for BSC to avoid changing consensus interfaces a lot. BSC modifies txs and receipts by appending
// system transactions, and they increase used gas and write cumulative gas to system receipts, that's why we need
// to deduct system gas before. This line is equal to "blockGas-systemGas", but since we don't know how much gas is
// used by system transactions we just override. Of course, we write used by block gas back. It also always true
// that used gas by block is always equal to original's block header gas, and it's checked by receipts root verification
// otherwise it causes block verification error.
header.GasUsed = *usedGas
syscall := func(contract common.Address, data []byte) ([]byte, error) {
return SysCallContract(contract, data, *chainConfig, ibs, header, engine, false /* constCall */)
}
outTxs, outReceipts, err := engine.Finalize(chainConfig, header, ibs, block.Transactions(), block.Uncles(), receipts, block.Withdrawals(), epochReader, chainReader, syscall)
if err != nil {
return nil, err
}
*usedGas = header.GasUsed
// We need repack this block because transactions and receipts might be changed by consensus, and
// it won't pass receipts hash or bloom verification
newBlock = types.NewBlock(block.Header(), outTxs, block.Uncles(), outReceipts, block.Withdrawals())
// Update receipts
if !vmConfig.NoReceipts {
receipts = outReceipts
}
receiptSha = newBlock.ReceiptHash()
} else {
newBlock = block
receiptSha = types.DeriveSha(receipts)
}
if chainConfig.IsByzantium(header.Number.Uint64()) && !vmConfig.NoReceipts {
if !vmConfig.StatelessExec && receiptSha != block.ReceiptHash() {
return nil, fmt.Errorf("mismatched receipt headers for block %d (%s != %s)", block.NumberU64(), receiptSha.Hex(), block.ReceiptHash().Hex())
}
}
if !vmConfig.StatelessExec && newBlock.GasUsed() != header.GasUsed {
return nil, fmt.Errorf("gas used by execution: %d, in header: %d, in new Block: %v", *usedGas, header.GasUsed, newBlock.GasUsed())
}
var bloom types.Bloom
if !vmConfig.NoReceipts {
bloom = newBlock.Bloom()
if !vmConfig.StatelessExec && bloom != header.Bloom {
return nil, fmt.Errorf("bloom computed by execution: %x, in header: %x", bloom, header.Bloom)
}
}
if err := ibs.CommitBlock(chainConfig.Rules(header.Number.Uint64()), stateWriter); err != nil {
return nil, fmt.Errorf("committing block %d failed: %w", header.Number.Uint64(), err)
} else if err := stateWriter.WriteChangeSets(); err != nil {
return nil, fmt.Errorf("writing changesets for block %d failed: %w", header.Number.Uint64(), err)
}
execRs := &EphemeralExecResult{
TxRoot: types.DeriveSha(includedTxs),
ReceiptRoot: receiptSha,
Bloom: bloom,
Receipts: receipts,
Difficulty: (*math.HexOrDecimal256)(block.Header().Difficulty),
GasUsed: math.HexOrDecimal64(*usedGas),
Rejected: rejectedTxs,
}
return execRs, nil
}
// ExecuteBlockEphemerally runs a block from provided stateReader and
// writes the result to the provided stateWriter
func ExecuteBlockEphemerally(
chainConfig *params.ChainConfig,
vmConfig *vm.Config,
blockHashFunc func(n uint64) common.Hash,
engine consensus.Engine,
block *types.Block,
stateReader state.StateReader,
stateWriter state.WriterWithChangeSets,
epochReader consensus.EpochReader,
chainReader consensus.ChainHeaderReader,
getTracer func(txIndex int, txHash common.Hash) (vm.Tracer, error),
) (*EphemeralExecResult, error) {
defer BlockExecutionTimer.UpdateDuration(time.Now())
block.Uncles()
ibs := state.New(stateReader)
header := block.Header()
usedGas := new(uint64)
gp := new(GasPool)
gp.AddGas(block.GasLimit())
var (
rejectedTxs []*RejectedTx
includedTxs types.Transactions
receipts types.Receipts
)
if !vmConfig.ReadOnly {
if err := InitializeBlockExecution(engine, chainReader, epochReader, block.Header(), block.Transactions(), block.Uncles(), chainConfig, ibs); err != nil {
return nil, err
}
}
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
misc.ApplyDAOHardFork(ibs)
}
noop := state.NewNoopWriter()
//fmt.Printf("====txs processing start: %d====\n", block.NumberU64())
for i, tx := range block.Transactions() {
ibs.Prepare(tx.Hash(), block.Hash(), i)
writeTrace := false
if vmConfig.Debug && vmConfig.Tracer == nil {
tracer, err := getTracer(i, tx.Hash())
if err != nil {
return nil, fmt.Errorf("could not obtain tracer: %w", err)
}
vmConfig.Tracer = tracer
writeTrace = true
}
receipt, _, err := ApplyTransaction(chainConfig, blockHashFunc, engine, nil, gp, ibs, noop, header, tx, usedGas, *vmConfig)
if writeTrace {
if ftracer, ok := vmConfig.Tracer.(vm.FlushableTracer); ok {
ftracer.Flush(tx)
}
vmConfig.Tracer = nil
}
if err != nil {
if !vmConfig.StatelessExec {
return nil, fmt.Errorf("could not apply tx %d from block %d [%v]: %w", i, block.NumberU64(), tx.Hash().Hex(), err)
}
rejectedTxs = append(rejectedTxs, &RejectedTx{i, err.Error()})
} else {
includedTxs = append(includedTxs, tx)
if !vmConfig.NoReceipts {
receipts = append(receipts, receipt)
}
}
}
receiptSha := types.DeriveSha(receipts)
if !vmConfig.StatelessExec && chainConfig.IsByzantium(header.Number.Uint64()) && !vmConfig.NoReceipts && receiptSha != block.ReceiptHash() {
return nil, fmt.Errorf("mismatched receipt headers for block %d (%s != %s)", block.NumberU64(), receiptSha.Hex(), block.ReceiptHash().Hex())
}
if !vmConfig.StatelessExec && *usedGas != header.GasUsed {
return nil, fmt.Errorf("gas used by execution: %d, in header: %d", *usedGas, header.GasUsed)
}
var bloom types.Bloom
if !vmConfig.NoReceipts {
bloom = types.CreateBloom(receipts)
if !vmConfig.StatelessExec && bloom != header.Bloom {
return nil, fmt.Errorf("bloom computed by execution: %x, in header: %x", bloom, header.Bloom)
}
}
if !vmConfig.ReadOnly {
txs := block.Transactions()
if _, _, _, err := FinalizeBlockExecution(engine, stateReader, block.Header(), txs, block.Uncles(), stateWriter, chainConfig, ibs, receipts, block.Withdrawals(), epochReader, chainReader, false); err != nil {
return nil, err
}
}
blockLogs := ibs.Logs()
execRs := &EphemeralExecResult{
TxRoot: types.DeriveSha(includedTxs),
ReceiptRoot: receiptSha,
Bloom: bloom,
LogsHash: rlpHash(blockLogs),
Receipts: receipts,
Difficulty: (*math.HexOrDecimal256)(header.Difficulty),
GasUsed: math.HexOrDecimal64(*usedGas),
Rejected: rejectedTxs,
}
return execRs, nil
}
// ExecuteBlockEphemerallyBor runs a block from provided stateReader and
// writes the result to the provided stateWriter
func ExecuteBlockEphemerallyBor(
chainConfig *params.ChainConfig,
vmConfig *vm.Config,
blockHashFunc func(n uint64) common.Hash,
engine consensus.Engine,
block *types.Block,
stateReader state.StateReader,
stateWriter state.WriterWithChangeSets,
epochReader consensus.EpochReader,
chainReader consensus.ChainHeaderReader,
getTracer func(txIndex int, txHash common.Hash) (vm.Tracer, error),
) (*EphemeralExecResult, error) {
defer BlockExecutionTimer.UpdateDuration(time.Now())
block.Uncles()
ibs := state.New(stateReader)
header := block.Header()
usedGas := new(uint64)
gp := new(GasPool)
gp.AddGas(block.GasLimit())
var (
rejectedTxs []*RejectedTx
includedTxs types.Transactions
receipts types.Receipts
)
if !vmConfig.ReadOnly {
if err := InitializeBlockExecution(engine, chainReader, epochReader, block.Header(), block.Transactions(), block.Uncles(), chainConfig, ibs); err != nil {
return nil, err
}
}
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(block.Number()) == 0 {
misc.ApplyDAOHardFork(ibs)
}
noop := state.NewNoopWriter()
//fmt.Printf("====txs processing start: %d====\n", block.NumberU64())
for i, tx := range block.Transactions() {
ibs.Prepare(tx.Hash(), block.Hash(), i)
writeTrace := false
if vmConfig.Debug && vmConfig.Tracer == nil {
tracer, err := getTracer(i, tx.Hash())
if err != nil {
return nil, fmt.Errorf("could not obtain tracer: %w", err)
}
vmConfig.Tracer = tracer
writeTrace = true
}
receipt, _, err := ApplyTransaction(chainConfig, blockHashFunc, engine, nil, gp, ibs, noop, header, tx, usedGas, *vmConfig)
if writeTrace {
if ftracer, ok := vmConfig.Tracer.(vm.FlushableTracer); ok {
ftracer.Flush(tx)
}
vmConfig.Tracer = nil
}
if err != nil {
if !vmConfig.StatelessExec {
return nil, fmt.Errorf("could not apply tx %d from block %d [%v]: %w", i, block.NumberU64(), tx.Hash().Hex(), err)
}
rejectedTxs = append(rejectedTxs, &RejectedTx{i, err.Error()})
} else {
includedTxs = append(includedTxs, tx)
if !vmConfig.NoReceipts {
receipts = append(receipts, receipt)
}
}
}
receiptSha := types.DeriveSha(receipts)
if !vmConfig.StatelessExec && chainConfig.IsByzantium(header.Number.Uint64()) && !vmConfig.NoReceipts && receiptSha != block.ReceiptHash() {
return nil, fmt.Errorf("mismatched receipt headers for block %d (%s != %s)", block.NumberU64(), receiptSha.Hex(), block.ReceiptHash().Hex())
}
if !vmConfig.StatelessExec && *usedGas != header.GasUsed {
return nil, fmt.Errorf("gas used by execution: %d, in header: %d", *usedGas, header.GasUsed)
}
var bloom types.Bloom
if !vmConfig.NoReceipts {
bloom = types.CreateBloom(receipts)
if !vmConfig.StatelessExec && bloom != header.Bloom {
return nil, fmt.Errorf("bloom computed by execution: %x, in header: %x", bloom, header.Bloom)
}
}
if !vmConfig.ReadOnly {
txs := block.Transactions()
if _, _, _, err := FinalizeBlockExecution(engine, stateReader, block.Header(), txs, block.Uncles(), stateWriter, chainConfig, ibs, receipts, block.Withdrawals(), epochReader, chainReader, false); err != nil {
return nil, err
}
}
var logs []*types.Log
for _, receipt := range receipts {
logs = append(logs, receipt.Logs...)
}
blockLogs := ibs.Logs()
stateSyncReceipt := &types.Receipt{}
if chainConfig.Consensus == params.BorConsensus && len(blockLogs) > 0 {
slices.SortStableFunc(blockLogs, func(i, j *types.Log) bool { return i.Index < j.Index })
if len(blockLogs) > len(logs) {
stateSyncReceipt.Logs = blockLogs[len(logs):] // get state-sync logs from `state.Logs()`
// fill the state sync with the correct information
types.DeriveFieldsForBorReceipt(stateSyncReceipt, block.Hash(), block.NumberU64(), receipts)
stateSyncReceipt.Status = types.ReceiptStatusSuccessful
}
}
execRs := &EphemeralExecResult{
TxRoot: types.DeriveSha(includedTxs),
ReceiptRoot: receiptSha,
Bloom: bloom,
LogsHash: rlpHash(blockLogs),
Receipts: receipts,
Difficulty: (*math.HexOrDecimal256)(header.Difficulty),
GasUsed: math.HexOrDecimal64(*usedGas),
Rejected: rejectedTxs,
StateSyncReceipt: stateSyncReceipt,
}
return execRs, nil
}
func rlpHash(x interface{}) (h common.Hash) {
hw := sha3.NewLegacyKeccak256()
rlp.Encode(hw, x) //nolint:errcheck
hw.Sum(h[:0])
return h
}
func SysCallContract(contract common.Address, data []byte, chainConfig params.ChainConfig, ibs *state.IntraBlockState, header *types.Header, engine consensus.EngineReader, constCall bool) (result []byte, err error) {
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(header.Number) == 0 {
misc.ApplyDAOHardFork(ibs)
}
msg := types.NewMessage(
state.SystemAddress,
&contract,
0, u256.Num0,
math.MaxUint64, u256.Num0,
nil, nil,
data, nil, false,
true, // isFree
)
vmConfig := vm.Config{NoReceipts: true, RestoreState: constCall}
// Create a new context to be used in the EVM environment
isBor := chainConfig.Bor != nil
var txContext evmtypes.TxContext
var author *common.Address
if isBor {
author = &header.Coinbase
txContext = evmtypes.TxContext{}
} else {
author = &state.SystemAddress
txContext = NewEVMTxContext(msg)
}
blockContext := NewEVMBlockContext(header, GetHashFn(header, nil), engine, author)
evm := vm.NewEVM(blockContext, txContext, ibs, &chainConfig, vmConfig)
ret, _, err := evm.Call(
vm.AccountRef(msg.From()),
*msg.To(),
msg.Data(),
msg.Gas(),
msg.Value(),
false,
)
if isBor && err != nil {
return nil, nil
}
return ret, err
}
// SysCreate is a special (system) contract creation methods for genesis constructors.
func SysCreate(contract common.Address, data []byte, chainConfig params.ChainConfig, ibs *state.IntraBlockState, header *types.Header) (result []byte, err error) {
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(header.Number) == 0 {
misc.ApplyDAOHardFork(ibs)
}
msg := types.NewMessage(
contract,
nil, // to
0, u256.Num0,
math.MaxUint64, u256.Num0,
nil, nil,
data, nil, false,
true, // isFree
)
vmConfig := vm.Config{NoReceipts: true}
// Create a new context to be used in the EVM environment
author := &contract
txContext := NewEVMTxContext(msg)
blockContext := NewEVMBlockContext(header, GetHashFn(header, nil), nil, author)
evm := vm.NewEVM(blockContext, txContext, ibs, &chainConfig, vmConfig)
ret, _, err := evm.SysCreate(
vm.AccountRef(msg.From()),
msg.Data(),
msg.Gas(),
msg.Value(),
contract,
)
return ret, err
}
func CallContract(contract common.Address, data []byte, chainConfig params.ChainConfig, ibs *state.IntraBlockState, header *types.Header, engine consensus.Engine) (result []byte, err error) {
gp := new(GasPool)
gp.AddGas(50_000_000)
var gasUsed uint64
if chainConfig.DAOForkSupport && chainConfig.DAOForkBlock != nil && chainConfig.DAOForkBlock.Cmp(header.Number) == 0 {
misc.ApplyDAOHardFork(ibs)
}
noop := state.NewNoopWriter()
tx, err := CallContractTx(contract, data, ibs)
if err != nil {
return nil, fmt.Errorf("SysCallContract: %w ", err)
}
vmConfig := vm.Config{NoReceipts: true}
_, result, err = ApplyTransaction(&chainConfig, GetHashFn(header, nil), engine, &state.SystemAddress, gp, ibs, noop, header, tx, &gasUsed, vmConfig)
if err != nil {
return result, fmt.Errorf("SysCallContract: %w ", err)
}
return result, nil
}
// from the null sender, with 50M gas.
func CallContractTx(contract common.Address, data []byte, ibs *state.IntraBlockState) (tx types.Transaction, err error) {
from := common.Address{}
nonce := ibs.GetNonce(from)
tx = types.NewTransaction(nonce, contract, u256.Num0, 50_000_000, u256.Num0, data)
return tx.FakeSign(from)
}
func FinalizeBlockExecution(engine consensus.Engine, stateReader state.StateReader, header *types.Header,
txs types.Transactions, uncles []*types.Header, stateWriter state.WriterWithChangeSets, cc *params.ChainConfig, ibs *state.IntraBlockState,
receipts types.Receipts, withdrawals []*types.Withdrawal, e consensus.EpochReader, headerReader consensus.ChainHeaderReader, isMining bool,
) (newBlock *types.Block, newTxs types.Transactions, newReceipt types.Receipts, err error) {
syscall := func(contract common.Address, data []byte) ([]byte, error) {
return SysCallContract(contract, data, *cc, ibs, header, engine, false /* constCall */)
}
if isMining {
newBlock, newTxs, newReceipt, err = engine.FinalizeAndAssemble(cc, header, ibs, txs, uncles, receipts, withdrawals, e, headerReader, syscall, nil)
} else {
_, _, err = engine.Finalize(cc, header, ibs, txs, uncles, receipts, withdrawals, e, headerReader, syscall)
}
if err != nil {
return nil, nil, nil, err
}
if err := ibs.CommitBlock(cc.Rules(header.Number.Uint64()), stateWriter); err != nil {
return nil, nil, nil, fmt.Errorf("committing block %d failed: %w", header.Number.Uint64(), err)
}
if err := stateWriter.WriteChangeSets(); err != nil {
return nil, nil, nil, fmt.Errorf("writing changesets for block %d failed: %w", header.Number.Uint64(), err)
}
return newBlock, newTxs, newReceipt, nil
}
func InitializeBlockExecution(engine consensus.Engine, chain consensus.ChainHeaderReader, epochReader consensus.EpochReader, header *types.Header, txs types.Transactions, uncles []*types.Header, cc *params.ChainConfig, ibs *state.IntraBlockState) error {
engine.Initialize(cc, chain, epochReader, header, ibs, txs, uncles, func(contract common.Address, data []byte) ([]byte, error) {
return SysCallContract(contract, data, *cc, ibs, header, engine, false /* constCall */)
})
noop := state.NewNoopWriter()
ibs.FinalizeTx(cc.Rules(header.Number.Uint64()), noop)
return nil
}