de39513ced
Until this commit, when sending an RPC request that called `NewEVM`, a blank `vm.Config` would be taken so as to set some options, based on the default configuration. If some extra configuration switches were passed to the blockchain, those would be ignored. This PR adds a function to get the config from the blockchain, and this is what is now used for RPC calls. Some subsequent changes need to be made, see https://github.com/ethereum/go-ethereum/pull/17955#pullrequestreview-182237244 for the details of the discussion.
226 lines
7.3 KiB
Go
226 lines
7.3 KiB
Go
// Copyright 2015 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 eth
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import (
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"context"
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"math/big"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/bloombits"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/eth/gasprice"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rpc"
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)
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// EthAPIBackend implements ethapi.Backend for full nodes
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type EthAPIBackend struct {
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eth *Ethereum
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gpo *gasprice.Oracle
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}
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// ChainConfig returns the active chain configuration.
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func (b *EthAPIBackend) ChainConfig() *params.ChainConfig {
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return b.eth.chainConfig
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}
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func (b *EthAPIBackend) CurrentBlock() *types.Block {
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return b.eth.blockchain.CurrentBlock()
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}
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func (b *EthAPIBackend) SetHead(number uint64) {
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b.eth.protocolManager.downloader.Cancel()
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b.eth.blockchain.SetHead(number)
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}
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func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
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// Pending block is only known by the miner
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if blockNr == rpc.PendingBlockNumber {
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block := b.eth.miner.PendingBlock()
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return block.Header(), nil
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}
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// Otherwise resolve and return the block
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if blockNr == rpc.LatestBlockNumber {
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return b.eth.blockchain.CurrentBlock().Header(), nil
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}
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return b.eth.blockchain.GetHeaderByNumber(uint64(blockNr)), nil
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}
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func (b *EthAPIBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
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return b.eth.blockchain.GetHeaderByHash(hash), nil
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}
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func (b *EthAPIBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
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// Pending block is only known by the miner
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if blockNr == rpc.PendingBlockNumber {
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block := b.eth.miner.PendingBlock()
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return block, nil
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}
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// Otherwise resolve and return the block
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if blockNr == rpc.LatestBlockNumber {
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return b.eth.blockchain.CurrentBlock(), nil
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}
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return b.eth.blockchain.GetBlockByNumber(uint64(blockNr)), nil
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}
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func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
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// Pending state is only known by the miner
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if blockNr == rpc.PendingBlockNumber {
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block, state := b.eth.miner.Pending()
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return state, block.Header(), nil
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}
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// Otherwise resolve the block number and return its state
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header, err := b.HeaderByNumber(ctx, blockNr)
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if header == nil || err != nil {
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return nil, nil, err
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}
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stateDb, err := b.eth.BlockChain().StateAt(header.Root)
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return stateDb, header, err
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}
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func (b *EthAPIBackend) GetBlock(ctx context.Context, hash common.Hash) (*types.Block, error) {
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return b.eth.blockchain.GetBlockByHash(hash), nil
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}
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func (b *EthAPIBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
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return b.eth.blockchain.GetReceiptsByHash(hash), nil
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}
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func (b *EthAPIBackend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
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receipts := b.eth.blockchain.GetReceiptsByHash(hash)
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if receipts == nil {
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return nil, nil
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}
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logs := make([][]*types.Log, len(receipts))
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for i, receipt := range receipts {
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logs[i] = receipt.Logs
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}
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return logs, nil
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}
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func (b *EthAPIBackend) GetTd(blockHash common.Hash) *big.Int {
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return b.eth.blockchain.GetTdByHash(blockHash)
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}
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func (b *EthAPIBackend) GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header) (*vm.EVM, func() error, error) {
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state.SetBalance(msg.From(), math.MaxBig256)
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vmError := func() error { return nil }
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context := core.NewEVMContext(msg, header, b.eth.BlockChain(), nil)
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return vm.NewEVM(context, state, b.eth.chainConfig, *b.eth.blockchain.GetVMConfig()), vmError, nil
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}
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func (b *EthAPIBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeRemovedLogsEvent(ch)
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}
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func (b *EthAPIBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeChainEvent(ch)
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}
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func (b *EthAPIBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeChainHeadEvent(ch)
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}
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func (b *EthAPIBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
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return b.eth.BlockChain().SubscribeChainSideEvent(ch)
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}
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func (b *EthAPIBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
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return b.eth.BlockChain().SubscribeLogsEvent(ch)
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}
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func (b *EthAPIBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
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return b.eth.txPool.AddLocal(signedTx)
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}
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func (b *EthAPIBackend) GetPoolTransactions() (types.Transactions, error) {
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pending, err := b.eth.txPool.Pending()
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if err != nil {
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return nil, err
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}
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var txs types.Transactions
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for _, batch := range pending {
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txs = append(txs, batch...)
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}
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return txs, nil
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}
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func (b *EthAPIBackend) GetPoolTransaction(hash common.Hash) *types.Transaction {
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return b.eth.txPool.Get(hash)
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}
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func (b *EthAPIBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) {
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return b.eth.txPool.State().GetNonce(addr), nil
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}
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func (b *EthAPIBackend) Stats() (pending int, queued int) {
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return b.eth.txPool.Stats()
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}
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func (b *EthAPIBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) {
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return b.eth.TxPool().Content()
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}
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func (b *EthAPIBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
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return b.eth.TxPool().SubscribeNewTxsEvent(ch)
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}
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func (b *EthAPIBackend) Downloader() *downloader.Downloader {
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return b.eth.Downloader()
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}
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func (b *EthAPIBackend) ProtocolVersion() int {
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return b.eth.EthVersion()
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}
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func (b *EthAPIBackend) SuggestPrice(ctx context.Context) (*big.Int, error) {
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return b.gpo.SuggestPrice(ctx)
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}
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func (b *EthAPIBackend) ChainDb() ethdb.Database {
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return b.eth.ChainDb()
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}
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func (b *EthAPIBackend) EventMux() *event.TypeMux {
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return b.eth.EventMux()
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}
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func (b *EthAPIBackend) AccountManager() *accounts.Manager {
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return b.eth.AccountManager()
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}
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func (b *EthAPIBackend) BloomStatus() (uint64, uint64) {
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sections, _, _ := b.eth.bloomIndexer.Sections()
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return params.BloomBitsBlocks, sections
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}
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func (b *EthAPIBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) {
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for i := 0; i < bloomFilterThreads; i++ {
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go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests)
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}
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}
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