plugeth/les/api_backend.go

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// Copyright 2016 The go-ethereum Authors
// 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
// 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
// (at your option) any later version.
//
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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
// 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
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package les
import (
"context"
"errors"
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"math/big"
"time"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
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"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"
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"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"
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"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/light"
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"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
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)
type LesApiBackend struct {
extRPCEnabled bool
allowUnprotectedTxs bool
eth *LightEthereum
gpo *gasprice.Oracle
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}
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func (b *LesApiBackend) ChainConfig() *params.ChainConfig {
return b.eth.chainConfig
}
func (b *LesApiBackend) CurrentBlock() *types.Block {
return types.NewBlockWithHeader(b.eth.BlockChain().CurrentHeader())
}
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func (b *LesApiBackend) SetHead(number uint64) {
b.eth.handler.downloader.Cancel()
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b.eth.blockchain.SetHead(number)
}
func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
// Return the latest current as the pending one since there
// is no pending notion in the light client. TODO(rjl493456442)
// unify the behavior of `HeaderByNumber` and `PendingBlockAndReceipts`.
if number == rpc.PendingBlockNumber {
return b.eth.blockchain.CurrentHeader(), nil
}
if number == rpc.LatestBlockNumber {
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return b.eth.blockchain.CurrentHeader(), nil
}
return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(number))
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}
func (b *LesApiBackend) 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, err := b.HeaderByHash(ctx, hash)
if err != nil {
return nil, err
}
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 *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
return b.eth.blockchain.GetHeaderByHash(hash), nil
}
func (b *LesApiBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
header, err := b.HeaderByNumber(ctx, number)
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if header == nil || err != nil {
return nil, err
}
return b.BlockByHash(ctx, header.Hash())
}
func (b *LesApiBackend) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
return b.eth.blockchain.GetBlockByHash(ctx, hash)
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}
func (b *LesApiBackend) 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 {
block, err := b.BlockByHash(ctx, hash)
if err != nil {
return nil, err
}
if block == nil {
return nil, errors.New("header found, but block body is missing")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(block.NumberU64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
return block, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *LesApiBackend) PendingBlockAndReceipts() (*types.Block, types.Receipts) {
return nil, nil
}
func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
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")
}
return light.NewState(ctx, header, b.eth.odr), header, nil
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}
func (b *LesApiBackend) 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 := b.eth.blockchain.GetHeaderByHash(hash)
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")
}
return light.NewState(ctx, header, b.eth.odr), header, nil
}
return nil, nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil {
return light.GetBlockReceipts(ctx, b.eth.odr, hash, *number)
}
return nil, nil
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}
func (b *LesApiBackend) GetLogs(ctx context.Context, hash common.Hash, number uint64) ([][]*types.Log, error) {
return light.GetBlockLogs(ctx, b.eth.odr, hash, number)
}
func (b *LesApiBackend) GetTd(ctx context.Context, hash common.Hash) *big.Int {
if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil {
return b.eth.blockchain.GetTdOdr(ctx, hash, *number)
}
return nil
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}
func (b *LesApiBackend) 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 = new(vm.Config)
}
txContext := core.NewEVMTxContext(msg)
context := core.NewEVMBlockContext(header, b.eth.blockchain, nil)
return vm.NewEVM(context, txContext, state, b.eth.chainConfig, *vmConfig), state.Error, nil
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}
func (b *LesApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {
return b.eth.txPool.Add(ctx, signedTx)
}
func (b *LesApiBackend) RemoveTx(txHash common.Hash) {
b.eth.txPool.RemoveTx(txHash)
}
func (b *LesApiBackend) GetPoolTransactions() (types.Transactions, error) {
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return b.eth.txPool.GetTransactions()
}
func (b *LesApiBackend) GetPoolTransaction(txHash common.Hash) *types.Transaction {
return b.eth.txPool.GetTransaction(txHash)
}
func (b *LesApiBackend) GetTransaction(ctx context.Context, txHash common.Hash) (*types.Transaction, common.Hash, uint64, uint64, error) {
return light.GetTransaction(ctx, b.eth.odr, txHash)
}
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func (b *LesApiBackend) GetPoolNonce(ctx context.Context, addr common.Address) (uint64, error) {
return b.eth.txPool.GetNonce(ctx, addr)
}
func (b *LesApiBackend) Stats() (pending int, queued int) {
return b.eth.txPool.Stats(), 0
}
func (b *LesApiBackend) TxPoolContent() (map[common.Address]types.Transactions, map[common.Address]types.Transactions) {
return b.eth.txPool.Content()
}
func (b *LesApiBackend) TxPoolContentFrom(addr common.Address) (types.Transactions, types.Transactions) {
return b.eth.txPool.ContentFrom(addr)
}
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func (b *LesApiBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
return b.eth.txPool.SubscribeNewTxsEvent(ch)
}
func (b *LesApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
return b.eth.blockchain.SubscribeChainEvent(ch)
}
func (b *LesApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
return b.eth.blockchain.SubscribeChainHeadEvent(ch)
}
func (b *LesApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
return b.eth.blockchain.SubscribeChainSideEvent(ch)
}
func (b *LesApiBackend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
return b.eth.blockchain.SubscribeLogsEvent(ch)
}
func (b *LesApiBackend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription {
return event.NewSubscription(func(quit <-chan struct{}) error {
<-quit
return nil
})
}
func (b *LesApiBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
return b.eth.blockchain.SubscribeRemovedLogsEvent(ch)
}
func (b *LesApiBackend) SyncProgress() ethereum.SyncProgress {
return b.eth.Downloader().Progress()
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}
func (b *LesApiBackend) ProtocolVersion() int {
return b.eth.LesVersion() + 10000
}
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 *LesApiBackend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
return b.gpo.SuggestTipCap(ctx)
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}
func (b *LesApiBackend) FeeHistory(ctx context.Context, blockCount int, 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)
}
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func (b *LesApiBackend) ChainDb() ethdb.Database {
return b.eth.chainDb
}
func (b *LesApiBackend) AccountManager() *accounts.Manager {
return b.eth.accountManager
}
func (b *LesApiBackend) ExtRPCEnabled() bool {
return b.extRPCEnabled
}
func (b *LesApiBackend) UnprotectedAllowed() bool {
return b.allowUnprotectedTxs
}
func (b *LesApiBackend) RPCGasCap() uint64 {
return b.eth.config.RPCGasCap
}
func (b *LesApiBackend) RPCEVMTimeout() time.Duration {
return b.eth.config.RPCEVMTimeout
}
func (b *LesApiBackend) RPCTxFeeCap() float64 {
return b.eth.config.RPCTxFeeCap
}
func (b *LesApiBackend) BloomStatus() (uint64, uint64) {
if b.eth.bloomIndexer == nil {
return 0, 0
}
sections, _, _ := b.eth.bloomIndexer.Sections()
return params.BloomBitsBlocksClient, sections
}
func (b *LesApiBackend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) {
for i := 0; i < bloomFilterThreads; i++ {
go session.Multiplex(bloomRetrievalBatch, bloomRetrievalWait, b.eth.bloomRequests)
}
}
func (b *LesApiBackend) Engine() consensus.Engine {
return b.eth.engine
}
func (b *LesApiBackend) CurrentHeader() *types.Header {
return b.eth.blockchain.CurrentHeader()
}
func (b *LesApiBackend) 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)
}
func (b *LesApiBackend) 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)
}