mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
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287 lines
11 KiB
Go
287 lines
11 KiB
Go
// Copyright 2019 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 core
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"os"
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"github.com/ledgerwatch/turbo-geth/common"
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"github.com/ledgerwatch/turbo-geth/common/math"
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"github.com/ledgerwatch/turbo-geth/consensus"
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"github.com/ledgerwatch/turbo-geth/consensus/misc"
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"github.com/ledgerwatch/turbo-geth/core/state"
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"github.com/ledgerwatch/turbo-geth/core/types"
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"github.com/ledgerwatch/turbo-geth/core/vm"
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"github.com/ledgerwatch/turbo-geth/crypto"
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"github.com/ledgerwatch/turbo-geth/params"
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)
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// StateProcessor is a basic Processor, which takes care of transitioning
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// state from one point to another.
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//
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// StateProcessor implements Processor.
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type StateProcessor struct {
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config *params.ChainConfig // Chain configuration options
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bc *BlockChain // Canonical block chain
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engine consensus.Engine // Consensus engine used for block rewards
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txTraceHash []byte // Hash of the transaction to trace (or nil if there nothing to trace)
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}
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// NewStateProcessor initialises a new StateProcessor.
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func NewStateProcessor(config *params.ChainConfig, bc *BlockChain, engine consensus.Engine) *StateProcessor {
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return &StateProcessor{
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config: config,
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bc: bc,
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engine: engine,
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}
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}
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// SetTxTraceHash allows setting the hash of the transaction to trace
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func (p *StateProcessor) SetTxTraceHash(txTraceHash common.Hash) {
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p.txTraceHash = txTraceHash[:]
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}
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// StructLogRes stores a structured log emitted by the EVM while replaying a
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// transaction in debug mode
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type StructLogRes struct {
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Pc uint64 `json:"pc"`
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Op string `json:"op"`
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Gas uint64 `json:"gas"`
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GasCost uint64 `json:"gasCost"`
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Depth int `json:"depth"`
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Error error `json:"error,omitempty"`
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Stack *[]string `json:"stack,omitempty"`
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Memory *[]string `json:"memory,omitempty"`
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Storage *map[string]string `json:"storage,omitempty"`
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}
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// FormatLogs formats EVM returned structured logs for json output
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func FormatLogs(logs []vm.StructLog) []StructLogRes {
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formatted := make([]StructLogRes, len(logs))
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for index, trace := range logs {
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formatted[index] = StructLogRes{
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Pc: trace.Pc,
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Op: trace.Op.String(),
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Gas: trace.Gas,
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GasCost: trace.GasCost,
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Depth: trace.Depth,
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Error: trace.Err,
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}
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if trace.Stack != nil {
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stack := make([]string, len(trace.Stack))
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for i, stackValue := range trace.Stack {
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stack[i] = fmt.Sprintf("%x", math.PaddedBigBytes(stackValue, 32))
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}
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formatted[index].Stack = &stack
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}
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if trace.Memory != nil {
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memory := make([]string, 0, (len(trace.Memory)+31)/32)
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for i := 0; i+32 <= len(trace.Memory); i += 32 {
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memory = append(memory, fmt.Sprintf("%x", trace.Memory[i:i+32]))
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}
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formatted[index].Memory = &memory
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}
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if trace.Storage != nil {
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storage := make(map[string]string)
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for i, storageValue := range trace.Storage {
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storage[fmt.Sprintf("%x", i)] = fmt.Sprintf("%x", storageValue)
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}
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formatted[index].Storage = &storage
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}
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}
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return formatted
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}
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// PreProcess processes the state changes according to the Ethereum rules by running
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// the transaction messages using the IntraBlockState and applying any rewards to both
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// the processor (coinbase) and any included uncles.
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//
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// PreProcess returns the receipts and logs accumulated during the process and
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// returns the amount of gas that was used in the process. If any of the
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// transactions failed to execute due to insufficient gas it will return an error.
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//
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// PreProcess does not calculate receipt roots (required pre-Byzantium)
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// and does not update the TrieDbState. For those two call PostProcess afterwards.
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func (p *StateProcessor) PreProcess(block *types.Block, ibs *state.IntraBlockState, tds *state.TrieDbState, cfg vm.Config) (
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receipts types.Receipts, allLogs []*types.Log, usedGas uint64, root common.Hash, err error) {
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header := block.Header()
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gp := new(GasPool).AddGas(block.GasLimit())
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// Mutate the block and state according to any hard-fork specs
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if p.config.DAOForkSupport && p.config.DAOForkBlock != nil && p.config.DAOForkBlock.Cmp(block.Number()) == 0 {
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misc.ApplyDAOHardFork(ibs)
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}
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// Iterate over and process the individual transactions
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tds.StartNewBuffer()
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for i, tx := range block.Transactions() {
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txHash := tx.Hash()
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ibs.Prepare(txHash, block.Hash(), i)
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writeTrace := false
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if !cfg.Debug && p.txTraceHash != nil && bytes.Equal(p.txTraceHash, txHash[:]) {
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// This code is useful when debugging a certain transaction. If uncommented, together with the code
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// at the end of this function, after the execution of transaction with given hash, the file
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// structlogs.txt will contain full trace of the transactin in JSON format. This can be compared
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// to another trace, obtained from the correct version of the turbo-geth or go-ethereum
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cfg.Tracer = vm.NewStructLogger(&vm.LogConfig{})
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cfg.Debug = true
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writeTrace = true
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}
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var receipt *types.Receipt
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receipt, err = ApplyTransaction(p.config, p.bc, nil, gp, ibs, tds.TrieStateWriter(), header, tx, &usedGas, cfg)
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// This code is useful when debugging a certain transaction. If uncommented, together with the code
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// at the end of this function, after the execution of transaction with given hash, the file
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// structlogs.txt will contain full trace of the transactin in JSON format. This can be compared
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// to another trace, obtained from the correct version of the turbo-geth or go-ethereum
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if writeTrace {
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w, err1 := os.Create(fmt.Sprintf("txtrace_%x.txt", p.txTraceHash))
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if err1 != nil {
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panic(err1)
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}
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encoder := json.NewEncoder(w)
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logs := FormatLogs(cfg.Tracer.(*vm.StructLogger).StructLogs())
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if err2 := encoder.Encode(logs); err2 != nil {
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panic(err2)
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}
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if err2 := w.Close(); err2 != nil {
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panic(err2)
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}
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cfg.Debug = false
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cfg.Tracer = nil
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}
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if err != nil {
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return nil, nil, 0, common.Hash{}, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
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}
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receipts = append(receipts, receipt)
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allLogs = append(allLogs, receipt.Logs...)
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if !p.config.IsByzantium(header.Number) {
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tds.StartNewBuffer()
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}
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}
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// Finalize the block, applying any consensus engine specific extras (e.g. block rewards)
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p.engine.Finalize(p.config, header, ibs, block.Transactions(), block.Uncles())
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ctx := p.config.WithEIPsFlags(context.Background(), header.Number)
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err = ibs.FinalizeTx(ctx, tds.TrieStateWriter())
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if err != nil {
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return
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}
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// Calculate the state root
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_, err = tds.ResolveStateTrie(false, false)
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if err != nil {
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return
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}
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root, err = tds.CalcTrieRoots(false)
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return receipts, allLogs, usedGas, root, err
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}
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// PostProcess calculates receipt roots (required pre-Byzantium) and updates the TrieDbState.
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// PostProcess should be called after PreProcess.
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func (p *StateProcessor) PostProcess(block *types.Block, tds *state.TrieDbState, receipts types.Receipts) error {
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roots, err := tds.UpdateStateTrie()
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if err != nil {
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return err
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}
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if !p.config.IsByzantium(block.Header().Number) {
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for i, receipt := range receipts {
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receipt.PostState = roots[i].Bytes()
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}
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}
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return nil
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}
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// applyTransaction attempts to apply a transaction to the given state database
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// and uses the input parameters for its environment. It returns the receipt
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// for the transaction, gas used and an error if the transaction failed,
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// indicating the block was invalid.
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func applyTransaction(msg types.Message, config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, statedb *state.IntraBlockState, stateWriter state.StateWriter, header *types.Header, tx *types.Transaction, usedGas *uint64, evm *vm.EVM, cfg vm.Config) (*types.Receipt, error) {
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msg, err := tx.AsMessage(types.MakeSigner(config, header.Number))
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if err != nil {
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return nil, err
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}
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ctx := config.WithEIPsFlags(context.Background(), header.Number)
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// Create a new context to be used in the EVM environment
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context := NewEVMBlockContext(header, bc, author)
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txContext := NewEVMTxContext(msg)
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if cfg.TraceJumpDest {
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txContext.TxHash = tx.Hash()
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}
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// Add addresses to access list if applicable
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// about the transaction and calling mechanisms.
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cfg.SkipAnalysis = SkipAnalysis(config, header.Number.Uint64())
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vmenv := vm.NewEVM(context, txContext, statedb, config, cfg)
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// Update the evm with the new transaction context.
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evm.Reset(txContext, statedb)
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// If the transaction created a contract, store the creation address in the receipt.
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result, err := ApplyMessage(vmenv, msg, gp, true /* refunds */, false /* gasBailout */)
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if err != nil {
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return nil, err
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}
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// Update the state with pending changes
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if err = statedb.FinalizeTx(ctx, stateWriter); err != nil {
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return nil, err
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}
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*usedGas += result.UsedGas
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// Set the receipt logs and create the bloom filter.
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// based on the eip phase, we're passing whether the root touch-delete accounts.
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var receipt *types.Receipt
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if !cfg.NoReceipts {
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// by the tx.
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receipt = &types.Receipt{Type: tx.Type(), CumulativeGasUsed: *usedGas}
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if result.Failed() {
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receipt.Status = types.ReceiptStatusFailed
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} else {
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receipt.Status = types.ReceiptStatusSuccessful
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}
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receipt.TxHash = tx.Hash()
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receipt.GasUsed = result.UsedGas
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// if the transaction created a contract, store the creation address in the receipt.
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if msg.To() == nil {
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receipt.ContractAddress = crypto.CreateAddress(vmenv.TxContext.Origin, tx.Nonce())
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}
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// Set the receipt logs and create a bloom for filtering
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receipt.Logs = statedb.GetLogs(tx.Hash())
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receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
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receipt.BlockNumber = header.Number
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receipt.TransactionIndex = uint(statedb.TxIndex())
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}
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return receipt, err
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}
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// ApplyTransaction attempts to apply a transaction to the given state database
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// and uses the input parameters for its environment. It returns the receipt
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// for the transaction, gas used and an error if the transaction failed,
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// indicating the block was invalid.
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func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, ibs *state.IntraBlockState, stateWriter state.StateWriter, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error) {
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msg, err := tx.AsMessage(types.MakeSigner(config, header.Number))
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if err != nil {
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return nil, err
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}
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// Create a new context to be used in the EVM environment
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blockContext := NewEVMBlockContext(header, bc, author)
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vmenv := vm.NewEVM(blockContext, vm.TxContext{}, ibs, config, cfg)
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return applyTransaction(msg, config, bc, author, gp, ibs, stateWriter, header, tx, usedGas, vmenv, cfg)
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}
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