plugeth/eth/api_backend.go

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// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
//
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// 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.
//
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// 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
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// GNU Lesser General Public License for more details.
//
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// 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"
"math/big"
"time"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/bloombits"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/txpool"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/eth/gasprice"
"github.com/ethereum/go-ethereum/eth/tracers"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/miner"
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"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
)
// EthAPIBackend implements ethapi.Backend for full nodes
type EthAPIBackend struct {
extRPCEnabled bool
allowUnprotectedTxs bool
eth *Ethereum
gpo *gasprice.Oracle
}
// ChainConfig returns the active chain configuration.
func (b *EthAPIBackend) ChainConfig() *params.ChainConfig {
return b.eth.blockchain.Config()
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}
func (b *EthAPIBackend) CurrentBlock() *types.Header {
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return b.eth.blockchain.CurrentBlock()
}
func (b *EthAPIBackend) SetHead(number uint64) {
b.eth.handler.downloader.Cancel()
b.eth.blockchain.SetHead(number)
}
func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
// Pending block is only known by the miner
if number == rpc.PendingBlockNumber {
block := b.eth.miner.PendingBlock()
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return block.Header(), nil
}
// Otherwise resolve and return the block
if number == rpc.LatestBlockNumber {
return b.eth.blockchain.CurrentBlock(), nil
}
if number == rpc.FinalizedBlockNumber {
if !b.eth.Merger().TDDReached() {
return nil, errors.New("'finalized' tag not supported on pre-merge network")
}
block := b.eth.blockchain.CurrentFinalBlock()
if block != nil {
return block, nil
}
return nil, errors.New("finalized block not found")
}
if number == rpc.SafeBlockNumber {
if !b.eth.Merger().TDDReached() {
return nil, errors.New("'safe' tag not supported on pre-merge network")
}
block := b.eth.blockchain.CurrentSafeBlock()
if block != nil {
return block, nil
}
return nil, errors.New("safe block not found")
}
return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil
}
func (b *EthAPIBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.HeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header := b.eth.blockchain.GetHeaderByHash(hash)
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
return header, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *EthAPIBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
return b.eth.blockchain.GetHeaderByHash(hash), nil
}
func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
// Pending block is only known by the miner
if number == rpc.PendingBlockNumber {
block := b.eth.miner.PendingBlock()
return block, nil
}
// Otherwise resolve and return the block
if number == rpc.LatestBlockNumber {
header := b.eth.blockchain.CurrentBlock()
return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
}
if number == rpc.FinalizedBlockNumber {
if !b.eth.Merger().TDDReached() {
return nil, errors.New("'finalized' tag not supported on pre-merge network")
}
header := b.eth.blockchain.CurrentFinalBlock()
return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
}
if number == rpc.SafeBlockNumber {
if !b.eth.Merger().TDDReached() {
return nil, errors.New("'safe' tag not supported on pre-merge network")
}
header := b.eth.blockchain.CurrentSafeBlock()
return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
}
return b.eth.blockchain.GetBlockByNumber(uint64(number)), nil
}
func (b *EthAPIBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
return b.eth.blockchain.GetBlockByHash(hash), nil
}
// GetBody returns body of a block. It does not resolve special block numbers.
func (b *EthAPIBackend) GetBody(ctx context.Context, hash common.Hash, number rpc.BlockNumber) (*types.Body, error) {
if number < 0 || hash == (common.Hash{}) {
return nil, errors.New("invalid arguments; expect hash and no special block numbers")
}
if body := b.eth.blockchain.GetBody(hash); body != nil {
return body, nil
}
return nil, errors.New("block body not found")
}
func (b *EthAPIBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.BlockByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header := b.eth.blockchain.GetHeaderByHash(hash)
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
block := b.eth.blockchain.GetBlock(hash, header.Number.Uint64())
if block == nil {
return nil, errors.New("header found, but block body is missing")
}
return block, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *EthAPIBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) {
return b.eth.miner.PendingBlockAndReceipts()
}
func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
// Pending state is only known by the miner
if number == rpc.PendingBlockNumber {
block, state := b.eth.miner.Pending()
return state, block.Header(), nil
}
// Otherwise resolve the block number and return its state
header, err := b.HeaderByNumber(ctx, number)
if err != nil {
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return nil, nil, err
}
if header == nil {
return nil, nil, errors.New("header not found")
}
stateDb, err := b.eth.BlockChain().StateAt(header.Root)
return stateDb, header, err
}
func (b *EthAPIBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.StateAndHeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header, err := b.HeaderByHash(ctx, hash)
if err != nil {
return nil, nil, err
}
if header == nil {
return nil, nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, nil, errors.New("hash is not currently canonical")
}
stateDb, err := b.eth.BlockChain().StateAt(header.Root)
return stateDb, header, err
}
return nil, nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *EthAPIBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
return b.eth.blockchain.GetReceiptsByHash(hash), nil
}
func (b *EthAPIBackend) GetLogs(ctx context.Context, hash common.Hash, number uint64) ([][]*types.Log, error) {
return rawdb.ReadLogs(b.eth.chainDb, hash, number, b.ChainConfig()), nil
}
func (b *EthAPIBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int {
if header := b.eth.blockchain.GetHeaderByHash(hash); header != nil {
return b.eth.blockchain.GetTd(hash, header.Number.Uint64())
}
return nil
}
func (b *EthAPIBackend) GetEVM(ctx context.Context, msg *core.Message, state *state.StateDB, header *types.Header, vmConfig *vm.Config) (*vm.EVM, func() error, error) {
if vmConfig == nil {
vmConfig = b.eth.blockchain.GetVMConfig()
}
txContext := core.NewEVMTxContext(msg)
context := core.NewEVMBlockContext(header, b.eth.BlockChain(), nil)
return vm.NewEVM(context, txContext, state, b.eth.blockchain.Config(), *vmConfig), state.Error, nil
}
func (b *EthAPIBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
return b.eth.BlockChain().SubscribeRemovedLogsEvent(ch)
}
func (b *EthAPIBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription {
return b.eth.miner.SubscribePendingLogs(ch)
}
func (b *EthAPIBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
return b.eth.BlockChain().SubscribeChainEvent(ch)
}
func (b *EthAPIBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
return b.eth.BlockChain().SubscribeChainHeadEvent(ch)
}
func (b *EthAPIBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
return b.eth.BlockChain().SubscribeChainSideEvent(ch)
}
func (b *EthAPIBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
return b.eth.BlockChain().SubscribeLogsEvent(ch)
}
func (b *EthAPIBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
return b.eth.txPool.AddLocal(signedTx)
}
func (b *EthAPIBackend) GetPoolTransactions() (types.Transactions, error) {
pending := b.eth.txPool.Pending(false)
var txs types.Transactions
for _, batch := range pending {
txs = append(txs, batch...)
}
return txs, nil
}
func (b *EthAPIBackend) GetPoolTransaction(hash common.Hash) *types.Transaction {
return b.eth.txPool.Get(hash)
}
func (b *EthAPIBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) {
tx, blockHash, blockNumber, index := rawdb.ReadTransaction(b.eth.ChainDb(), txHash)
return tx, blockHash, blockNumber, index, nil
}
func (b *EthAPIBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) {
return b.eth.txPool.Nonce(addr), nil
}
func (b *EthAPIBackend) Stats() (pending int, queued int) {
return b.eth.txPool.Stats()
}
func (b *EthAPIBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) {
return b.eth.TxPool().Content()
}
func (b *EthAPIBackend) TxPoolContentFrom(addr common.Address) (types.Transactions, types.Transactions) {
return b.eth.TxPool().ContentFrom(addr)
}
func (b *EthAPIBackend) TxPool() *txpool.TxPool {
return b.eth.TxPool()
}
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func (b *EthAPIBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
return b.eth.TxPool().SubscribeNewTxsEvent(ch)
}
func (b *EthAPIBackend) SyncProgress() ethereum.SyncProgress {
return b.eth.Downloader().Progress()
}
core, eth, internal, les: RPC methods and fields for EIP 1559 (#22964) * internal/ethapi: add baseFee to RPCMarshalHeader * internal/ethapi: add FeeCap, Tip and correct GasPrice to EIP-1559 RPCTransaction results * core,eth,les,internal: add support for tip estimation in gas price oracle * internal/ethapi,eth/gasprice: don't suggest tip larger than fee cap * core/types,internal: use correct eip1559 terminology for json marshalling * eth, internal/ethapi: fix rebase problems * internal/ethapi: fix rpc name of basefee * internal/ethapi: address review concerns * core, eth, internal, les: simplify gasprice oracle (#25) * core, eth, internal, les: simplify gasprice oracle * eth/gasprice: fix typo * internal/ethapi: minor tweak in tx args * internal/ethapi: calculate basefee for pending block * internal/ethapi: fix panic * internal/ethapi, eth/tracers: simplify txargs ToMessage * internal/ethapi: remove unused param * core, eth, internal: fix regressions wrt effective gas price in the evm * eth/gasprice: drop weird debug println * internal/jsre/deps: hack in 1559 gas conversions into embedded web3 * internal/jsre/deps: hack basFee to decimal conversion * internal/ethapi: init feecap and tipcap for legacy txs too * eth, graphql, internal, les: fix gas price suggestion on all combos * internal/jsre/deps: handle decimal tipcap and feecap * eth, internal: minor review fixes * graphql, internal: export max fee cap RPC endpoint * internal/ethapi: fix crash in transaction_args * internal/ethapi: minor refactor to make the code safer Co-authored-by: Ryan Schneider <ryanleeschneider@gmail.com> Co-authored-by: lightclient@protonmail.com <lightclient@protonmail.com> Co-authored-by: gary rong <garyrong0905@gmail.com> Co-authored-by: Péter Szilágyi <peterke@gmail.com>
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func (b *EthAPIBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
return b.gpo.SuggestTipCap(ctx)
}
func (b *EthAPIBackend) FeeHistory(ctx context.Context, blockCount uint64, lastBlock rpc.BlockNumber, rewardPercentiles []float64) (firstBlock *big.Int, reward [][]*big.Int, baseFee []*big.Int, gasUsedRatio []float64, err error) {
return b.gpo.FeeHistory(ctx, blockCount, lastBlock, rewardPercentiles)
}
func (b *EthAPIBackend) ChainDb() ethdb.Database {
return b.eth.ChainDb()
}
func (b *EthAPIBackend) EventMux() *event.TypeMux {
return b.eth.EventMux()
}
func (b *EthAPIBackend) AccountManager() *accounts.Manager {
return b.eth.AccountManager()
}
func (b *EthAPIBackend) ExtRPCEnabled() bool {
return b.extRPCEnabled
}
func (b *EthAPIBackend) UnprotectedAllowed() bool {
return b.allowUnprotectedTxs
}
func (b *EthAPIBackend) RPCGasCap() uint64 {
return b.eth.config.RPCGasCap
}
func (b *EthAPIBackend) RPCEVMTimeout() time.Duration {
return b.eth.config.RPCEVMTimeout
}
func (b *EthAPIBackend) RPCTxFeeCap() float64 {
return b.eth.config.RPCTxFeeCap
}
func (b *EthAPIBackend) BloomStatus() (uint64, uint64) {
sections, _, _ := b.eth.bloomIndexer.Sections()
return params.BloomBitsBlocks, sections
}
func (b *EthAPIBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) {
for i := 0; i < bloomFilterThreads; i++ {
go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests)
}
}
func (b *EthAPIBackend) Engine() consensus.Engine {
return b.eth.engine
}
func (b *EthAPIBackend) CurrentHeader() *types.Header {
return b.eth.blockchain.CurrentHeader()
}
func (b *EthAPIBackend) Miner() *miner.Miner {
return b.eth.Miner()
}
func (b *EthAPIBackend) StartMining(threads int) error {
return b.eth.StartMining(threads)
}
func (b *EthAPIBackend) StateAtBlock(ctx context.Context, block *types.Block, reexec uint64, base *state.StateDB, readOnly bool, preferDisk bool) (*state.StateDB, tracers.StateReleaseFunc, error) {
return b.eth.StateAtBlock(ctx, block, reexec, base, readOnly, preferDisk)
}
func (b *EthAPIBackend) StateAtTransaction(ctx context.Context, block *types.Block, txIndex int, reexec uint64) (*core.Message, vm.BlockContext, *state.StateDB, tracers.StateReleaseFunc, error) {
return b.eth.stateAtTransaction(ctx, block, txIndex, reexec)
}