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- // Copyright 2021 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 eth
- import (
- "context"
- "errors"
- "fmt"
- "time"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/core"
- "github.com/ethereum/go-ethereum/core/mps"
- "github.com/ethereum/go-ethereum/core/state"
- "github.com/ethereum/go-ethereum/core/types"
- "github.com/ethereum/go-ethereum/core/vm"
- "github.com/ethereum/go-ethereum/log"
- "github.com/ethereum/go-ethereum/private"
- "github.com/ethereum/go-ethereum/trie"
- )
- // stateAtBlock retrieves the state database associated with a certain block.
- // If no state is locally available for the given block, a number of blocks
- // are attempted to be reexecuted to generate the desired state. The optional
- // base layer statedb can be passed then it's regarded as the statedb of the
- // parent block.
- func (eth *Ethereum) stateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (statedb *state.StateDB, privateStateDB mps.PrivateStateRepository, err error) {
- var (
- current *types.Block
- database state.Database
- report = true
- origin = block.NumberU64()
- )
- // Check the live database first if we have the state fully available, use that.
- if checkLive {
- statedb, privateStateDB, err = eth.blockchain.StateAt(block.Root())
- if err == nil {
- return
- }
- }
- if base != nil {
- // The optional base statedb is given, mark the start point as parent block
- statedb, database, report = base, base.Database(), false
- current = eth.blockchain.GetBlock(block.ParentHash(), block.NumberU64()-1)
- } else {
- // Otherwise try to reexec blocks until we find a state or reach our limit
- current = block
- // Create an ephemeral trie.Database for isolating the live one. Otherwise
- // the internal junks created by tracing will be persisted into the disk.
- database = state.NewDatabaseWithConfig(eth.chainDb, &trie.Config{Cache: 16})
- // If we didn't check the dirty database, do check the clean one, otherwise
- // we would rewind past a persisted block (specific corner case is chain
- // tracing from the genesis).
- if !checkLive {
- statedb, err = state.New(current.Root(), database, nil)
- if err == nil {
- // Quorum
- _, privateStateDB, err = eth.blockchain.StateAt(current.Root())
- if err == nil {
- return statedb, privateStateDB, nil
- }
- // End Quorum
- }
- }
- // Database does not have the state for the given block, try to regenerate
- for i := uint64(0); i < reexec; i++ {
- if current.NumberU64() == 0 {
- return nil, nil, errors.New("genesis state is missing")
- }
- parent := eth.blockchain.GetBlock(current.ParentHash(), current.NumberU64()-1)
- if parent == nil {
- return nil, nil, fmt.Errorf("missing block %v %d", current.ParentHash(), current.NumberU64()-1)
- }
- current = parent
- statedb, err = state.New(current.Root(), database, nil)
- if err == nil {
- // Quorum
- _, privateStateDB, err = eth.blockchain.StateAt(current.Root())
- if err == nil {
- break
- }
- // End Quorum
- }
- }
- if err != nil {
- switch err.(type) {
- case *trie.MissingNodeError:
- return nil, nil, fmt.Errorf("required historical state unavailable (reexec=%d)", reexec)
- default:
- return nil, nil, err
- }
- }
- }
- // State was available at historical point, regenerate
- var (
- start = time.Now()
- logged time.Time
- parent common.Hash
- )
- for current.NumberU64() < origin {
- // Print progress logs if long enough time elapsed
- if time.Since(logged) > 8*time.Second && report {
- log.Info("Regenerating historical state", "block", current.NumberU64()+1, "target", origin, "remaining", origin-current.NumberU64()-1, "elapsed", time.Since(start))
- logged = time.Now()
- }
- // Retrieve the next block to regenerate and process it
- next := current.NumberU64() + 1
- if current = eth.blockchain.GetBlockByNumber(next); current == nil {
- return nil, nil, fmt.Errorf("block #%d not found", next)
- }
- _, _, _, _, err = eth.blockchain.Processor().Process(current, statedb, privateStateDB, vm.Config{})
- if err != nil {
- return nil, nil, fmt.Errorf("processing block %d failed: %v", current.NumberU64(), err)
- }
- var root common.Hash
- // Finalize the state so any modifications are written to the trie
- root, err = statedb.Commit(eth.blockchain.Config().IsEIP158(current.Number()))
- if err != nil {
- return nil, nil, err
- }
- statedb, err = state.New(root, database, nil)
- if err != nil {
- return nil, nil, fmt.Errorf("state reset after block %d failed: %v", current.NumberU64(), err)
- }
- // Quorum
- err = privateStateDB.Commit(eth.blockchain.Config().IsEIP158(block.Number()), block)
- if err != nil {
- return nil, nil, err
- }
- if err := privateStateDB.Reset(); err != nil {
- return nil, nil, fmt.Errorf("private state reset after block %d failed: %v", block.NumberU64(), err)
- }
- // End Quorum
- database.TrieDB().Reference(root, common.Hash{})
- if parent != (common.Hash{}) {
- database.TrieDB().Dereference(parent)
- }
- parent = root
- }
- if report {
- nodes, imgs := database.TrieDB().Size()
- log.Info("Historical state regenerated", "block", current.NumberU64(), "elapsed", time.Since(start), "nodes", nodes, "preimages", imgs)
- }
- return statedb, privateStateDB, nil
- }
- // stateAtTransaction returns the execution environment of a certain transaction.
- func (eth *Ethereum) stateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (core.Message, vm.BlockContext, *state.StateDB, *state.StateDB, mps.PrivateStateRepository, error) {
- // Short circuit if it's genesis block.
- if block.NumberU64() == 0 {
- return nil, vm.BlockContext{}, nil, nil, nil, errors.New("no transaction in genesis")
- }
- // Create the parent state database
- parent := eth.blockchain.GetBlock(block.ParentHash(), block.NumberU64()-1)
- if parent == nil {
- return nil, vm.BlockContext{}, nil, nil, nil, fmt.Errorf("parent %#x not found", block.ParentHash())
- }
- // Quorum
- statedb, privateStateRepo, err := eth.stateAtBlock(parent, reexec, nil, true)
- if err != nil {
- return nil, vm.BlockContext{}, nil, nil, nil, err
- }
- psm, err := eth.blockchain.PrivateStateManager().ResolveForUserContext(ctx)
- if err != nil {
- return nil, vm.BlockContext{}, nil, nil, nil, err
- }
- privateStateDb, err := privateStateRepo.StatePSI(psm.ID)
- if err != nil {
- return nil, vm.BlockContext{}, nil, nil, nil, err
- }
- // End Quorum
- if txIndex == 0 && len(block.Transactions()) == 0 {
- return nil, vm.BlockContext{}, statedb, privateStateDb, privateStateRepo, nil
- }
- // Recompute transactions up to the target index.
- signer := types.MakeSigner(eth.blockchain.Config(), block.Number())
- for idx, tx := range block.Transactions() {
- // Quorum
- privateStateDbToUse := core.PrivateStateDBForTxn(eth.blockchain.Config().IsQuorum, tx, statedb, privateStateDb)
- // End Quorum
- // Assemble the transaction call message and return if the requested offset
- msg, _ := tx.AsMessage(signer)
- msg = eth.clearMessageDataIfNonParty(msg, psm) // Quorum
- txContext := core.NewEVMTxContext(msg)
- context := core.NewEVMBlockContext(block.Header(), eth.blockchain, nil)
- if idx == txIndex {
- return msg, context, statedb, privateStateDb, privateStateRepo, nil
- }
- // Not yet the searched for transaction, execute on top of the current state
- vmenv := vm.NewEVM(context, txContext, statedb, privateStateDbToUse, eth.blockchain.Config(), vm.Config{})
- vmenv.SetCurrentTX(tx)
- vmenv.InnerApply = func(innerTx *types.Transaction) error {
- return applyInnerTransaction(eth.blockchain, statedb, privateStateDbToUse, block.Header(), tx, vm.Config{}, privateStateRepo.IsMPS(), privateStateRepo, vmenv, innerTx, idx)
- }
- if _, err := core.ApplyMessage(vmenv, msg, new(core.GasPool).AddGas(tx.Gas())); err != nil {
- return nil, vm.BlockContext{}, nil, nil, nil, fmt.Errorf("transaction %#x failed: %v", tx.Hash(), err)
- }
- // Ensure any modifications are committed to the state
- // Only delete empty objects if EIP158/161 (a.k.a Spurious Dragon) is in effect
- statedb.Finalise(vmenv.ChainConfig().IsEIP158(block.Number()))
- }
- return nil, vm.BlockContext{}, nil, nil, nil, fmt.Errorf("transaction index %d out of range for block %#x", txIndex, block.Hash())
- }
- // Quorum
- func (eth *Ethereum) GetBlockchain() *core.BlockChain {
- return eth.BlockChain()
- }
- func applyInnerTransaction(bc *core.BlockChain, stateDB *state.StateDB, privateStateDB *state.StateDB, header *types.Header, outerTx *types.Transaction, evmConf vm.Config, forceNonParty bool, privateStateRepo mps.PrivateStateRepository, vmenv *vm.EVM, innerTx *types.Transaction, txIndex int) error {
- var (
- author *common.Address = nil // ApplyTransaction will determine the author from the header so we won't do it here
- gp *core.GasPool = new(core.GasPool).AddGas(outerTx.Gas())
- usedGas uint64 = 0
- )
- return core.ApplyInnerTransaction(bc, author, gp, stateDB, privateStateDB, header, outerTx, &usedGas, evmConf, forceNonParty, privateStateRepo, vmenv, innerTx, txIndex)
- }
- // clearMessageDataIfNonParty sets the message data to empty hash in case the private state is not party to the
- // transaction. The effect is that when the private tx payload is resolved using the privacy manager the private part of
- // the transaction is not retrieved and the transaction is being executed as if the node/private state is not party to
- // the transaction.
- func (eth *Ethereum) clearMessageDataIfNonParty(msg types.Message, psm *mps.PrivateStateMetadata) types.Message {
- if msg.IsPrivate() {
- _, managedParties, _, _, _ := private.P.Receive(common.BytesToEncryptedPayloadHash(msg.Data()))
- if eth.GetBlockchain().PrivateStateManager().NotIncludeAny(psm, managedParties...) {
- return msg.WithEmptyPrivateData(true)
- }
- }
- return msg
- }
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