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Geth-Modification
Unverified Commit c641cff5 authored by Marius van der Wijden's avatar Marius van der Wijden Committed by GitHub
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core: refactored blockchain.go (#23735)

parent 464885fa
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Showing with 387 additions and 366 deletions
core/blockchain.go
View file @ c641cff5
......@@ -43,7 +43,6 @@ import (
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
lru "github.com/hashicorp/golang-lru"
)
......@@ -409,11 +408,6 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *par
return bc, nil
}
// GetVMConfig returns the block chain VM config.
func (bc *BlockChain) GetVMConfig() *vm.Config {
return &bc.vmConfig
}
// empty returns an indicator whether the blockchain is empty.
// Note, it's a special case that we connect a non-empty ancient
// database with an empty node, so that we can plugin the ancient
......@@ -666,53 +660,6 @@ func (bc *BlockChain) FastSyncCommitHead(hash common.Hash) error {
return nil
}
// GasLimit returns the gas limit of the current HEAD block.
func (bc *BlockChain) GasLimit() uint64 {
return bc.CurrentBlock().GasLimit()
}
// CurrentBlock retrieves the current head block of the canonical chain. The
// block is retrieved from the blockchain's internal cache.
func (bc *BlockChain) CurrentBlock() *types.Block {
return bc.currentBlock.Load().(*types.Block)
}
// Snapshots returns the blockchain snapshot tree.
func (bc *BlockChain) Snapshots() *snapshot.Tree {
return bc.snaps
}
// CurrentFastBlock retrieves the current fast-sync head block of the canonical
// chain. The block is retrieved from the blockchain's internal cache.
func (bc *BlockChain) CurrentFastBlock() *types.Block {
return bc.currentFastBlock.Load().(*types.Block)
}
// Validator returns the current validator.
func (bc *BlockChain) Validator() Validator {
return bc.validator
}
// Processor returns the current processor.
func (bc *BlockChain) Processor() Processor {
return bc.processor
}
// State returns a new mutable state based on the current HEAD block.
func (bc *BlockChain) State() (*state.StateDB, error) {
return bc.StateAt(bc.CurrentBlock().Root())
}
// StateAt returns a new mutable state based on a particular point in time.
func (bc *BlockChain) StateAt(root common.Hash) (*state.StateDB, error) {
return state.New(root, bc.stateCache, bc.snaps)
}
// StateCache returns the caching database underpinning the blockchain instance.
func (bc *BlockChain) StateCache() state.Database {
return bc.stateCache
}
// Reset purges the entire blockchain, restoring it to its genesis state.
func (bc *BlockChain) Reset() error {
return bc.ResetWithGenesisBlock(bc.genesisBlock)
......@@ -819,194 +766,6 @@ func (bc *BlockChain) writeHeadBlock(block *types.Block) {
headBlockGauge.Update(int64(block.NumberU64()))
}
// Genesis retrieves the chain's genesis block.
func (bc *BlockChain) Genesis() *types.Block {
return bc.genesisBlock
}
// GetBody retrieves a block body (transactions and uncles) from the database by
// hash, caching it if found.
func (bc *BlockChain) GetBody(hash common.Hash) *types.Body {
// Short circuit if the body's already in the cache, retrieve otherwise
if cached, ok := bc.bodyCache.Get(hash); ok {
body := cached.(*types.Body)
return body
}
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
body := rawdb.ReadBody(bc.db, hash, *number)
if body == nil {
return nil
}
// Cache the found body for next time and return
bc.bodyCache.Add(hash, body)
return body
}
// GetBodyRLP retrieves a block body in RLP encoding from the database by hash,
// caching it if found.
func (bc *BlockChain) GetBodyRLP(hash common.Hash) rlp.RawValue {
// Short circuit if the body's already in the cache, retrieve otherwise
if cached, ok := bc.bodyRLPCache.Get(hash); ok {
return cached.(rlp.RawValue)
}
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
body := rawdb.ReadBodyRLP(bc.db, hash, *number)
if len(body) == 0 {
return nil
}
// Cache the found body for next time and return
bc.bodyRLPCache.Add(hash, body)
return body
}
// HasBlock checks if a block is fully present in the database or not.
func (bc *BlockChain) HasBlock(hash common.Hash, number uint64) bool {
if bc.blockCache.Contains(hash) {
return true
}
return rawdb.HasBody(bc.db, hash, number)
}
// HasFastBlock checks if a fast block is fully present in the database or not.
func (bc *BlockChain) HasFastBlock(hash common.Hash, number uint64) bool {
if !bc.HasBlock(hash, number) {
return false
}
if bc.receiptsCache.Contains(hash) {
return true
}
return rawdb.HasReceipts(bc.db, hash, number)
}
// HasState checks if state trie is fully present in the database or not.
func (bc *BlockChain) HasState(hash common.Hash) bool {
_, err := bc.stateCache.OpenTrie(hash)
return err == nil
}
// HasBlockAndState checks if a block and associated state trie is fully present
// in the database or not, caching it if present.
func (bc *BlockChain) HasBlockAndState(hash common.Hash, number uint64) bool {
// Check first that the block itself is known
block := bc.GetBlock(hash, number)
if block == nil {
return false
}
return bc.HasState(block.Root())
}
// GetBlock retrieves a block from the database by hash and number,
// caching it if found.
func (bc *BlockChain) GetBlock(hash common.Hash, number uint64) *types.Block {
// Short circuit if the block's already in the cache, retrieve otherwise
if block, ok := bc.blockCache.Get(hash); ok {
return block.(*types.Block)
}
block := rawdb.ReadBlock(bc.db, hash, number)
if block == nil {
return nil
}
// Cache the found block for next time and return
bc.blockCache.Add(block.Hash(), block)
return block
}
// GetBlockByHash retrieves a block from the database by hash, caching it if found.
func (bc *BlockChain) GetBlockByHash(hash common.Hash) *types.Block {
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
return bc.GetBlock(hash, *number)
}
// GetBlockByNumber retrieves a block from the database by number, caching it
// (associated with its hash) if found.
func (bc *BlockChain) GetBlockByNumber(number uint64) *types.Block {
hash := rawdb.ReadCanonicalHash(bc.db, number)
if hash == (common.Hash{}) {
return nil
}
return bc.GetBlock(hash, number)
}
// GetReceiptsByHash retrieves the receipts for all transactions in a given block.
func (bc *BlockChain) GetReceiptsByHash(hash common.Hash) types.Receipts {
if receipts, ok := bc.receiptsCache.Get(hash); ok {
return receipts.(types.Receipts)
}
number := rawdb.ReadHeaderNumber(bc.db, hash)
if number == nil {
return nil
}
receipts := rawdb.ReadReceipts(bc.db, hash, *number, bc.chainConfig)
if receipts == nil {
return nil
}
bc.receiptsCache.Add(hash, receipts)
return receipts
}
// GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors.
// [deprecated by eth/62]
func (bc *BlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []*types.Block) {
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
for i := 0; i < n; i++ {
block := bc.GetBlock(hash, *number)
if block == nil {
break
}
blocks = append(blocks, block)
hash = block.ParentHash()
*number--
}
return
}
// GetUnclesInChain retrieves all the uncles from a given block backwards until
// a specific distance is reached.
func (bc *BlockChain) GetUnclesInChain(block *types.Block, length int) []*types.Header {
uncles := []*types.Header{}
for i := 0; block != nil && i < length; i++ {
uncles = append(uncles, block.Uncles()...)
block = bc.GetBlock(block.ParentHash(), block.NumberU64()-1)
}
return uncles
}
// TrieNode retrieves a blob of data associated with a trie node
// either from ephemeral in-memory cache, or from persistent storage.
func (bc *BlockChain) TrieNode(hash common.Hash) ([]byte, error) {
return bc.stateCache.TrieDB().Node(hash)
}
// ContractCode retrieves a blob of data associated with a contract hash
// either from ephemeral in-memory cache, or from persistent storage.
func (bc *BlockChain) ContractCode(hash common.Hash) ([]byte, error) {
return bc.stateCache.ContractCode(common.Hash{}, hash)
}
// ContractCodeWithPrefix retrieves a blob of data associated with a contract
// hash either from ephemeral in-memory cache, or from persistent storage.
//
// If the code doesn't exist in the in-memory cache, check the storage with
// new code scheme.
func (bc *BlockChain) ContractCodeWithPrefix(hash common.Hash) ([]byte, error) {
type codeReader interface {
ContractCodeWithPrefix(addrHash, codeHash common.Hash) ([]byte, error)
}
return bc.stateCache.(codeReader).ContractCodeWithPrefix(common.Hash{}, hash)
}
// Stop stops the blockchain service. If any imports are currently in progress
// it will abort them using the procInterrupt.
func (bc *BlockChain) Stop() {
......@@ -1390,18 +1149,6 @@ func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain [
return 0, nil
}
// SetTxLookupLimit is responsible for updating the txlookup limit to the
// original one stored in db if the new mismatches with the old one.
func (bc *BlockChain) SetTxLookupLimit(limit uint64) {
bc.txLookupLimit = limit
}
// TxLookupLimit retrieves the txlookup limit used by blockchain to prune
// stale transaction indices.
func (bc *BlockChain) TxLookupLimit() uint64 {
return bc.txLookupLimit
}
var lastWrite uint64
// writeBlockWithoutState writes only the block and its metadata to the database,
......@@ -2398,116 +2145,3 @@ func (bc *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (i
_, err := bc.hc.InsertHeaderChain(chain, start)
return 0, err
}
// CurrentHeader retrieves the current head header of the canonical chain. The
// header is retrieved from the HeaderChain's internal cache.
func (bc *BlockChain) CurrentHeader() *types.Header {
return bc.hc.CurrentHeader()
}
// GetTd retrieves a block's total difficulty in the canonical chain from the
// database by hash and number, caching it if found.
func (bc *BlockChain) GetTd(hash common.Hash, number uint64) *big.Int {
return bc.hc.GetTd(hash, number)
}
// GetHeader retrieves a block header from the database by hash and number,
// caching it if found.
func (bc *BlockChain) GetHeader(hash common.Hash, number uint64) *types.Header {
// Blockchain might have cached the whole block, only if not go to headerchain
if block, ok := bc.blockCache.Get(hash); ok {
return block.(*types.Block).Header()
}
return bc.hc.GetHeader(hash, number)
}
// GetHeaderByHash retrieves a block header from the database by hash, caching it if
// found.
func (bc *BlockChain) GetHeaderByHash(hash common.Hash) *types.Header {
// Blockchain might have cached the whole block, only if not go to headerchain
if block, ok := bc.blockCache.Get(hash); ok {
return block.(*types.Block).Header()
}
return bc.hc.GetHeaderByHash(hash)
}
// HasHeader checks if a block header is present in the database or not, caching
// it if present.
func (bc *BlockChain) HasHeader(hash common.Hash, number uint64) bool {
return bc.hc.HasHeader(hash, number)
}
// GetCanonicalHash returns the canonical hash for a given block number
func (bc *BlockChain) GetCanonicalHash(number uint64) common.Hash {
return bc.hc.GetCanonicalHash(number)
}
// GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or
// a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the
// number of blocks to be individually checked before we reach the canonical chain.
//
// Note: ancestor == 0 returns the same block, 1 returns its parent and so on.
func (bc *BlockChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64) {
return bc.hc.GetAncestor(hash, number, ancestor, maxNonCanonical)
}
// GetHeaderByNumber retrieves a block header from the database by number,
// caching it (associated with its hash) if found.
func (bc *BlockChain) GetHeaderByNumber(number uint64) *types.Header {
return bc.hc.GetHeaderByNumber(number)
}
// GetTransactionLookup retrieves the lookup associate with the given transaction
// hash from the cache or database.
func (bc *BlockChain) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry {
// Short circuit if the txlookup already in the cache, retrieve otherwise
if lookup, exist := bc.txLookupCache.Get(hash); exist {
return lookup.(*rawdb.LegacyTxLookupEntry)
}
tx, blockHash, blockNumber, txIndex := rawdb.ReadTransaction(bc.db, hash)
if tx == nil {
return nil
}
lookup := &rawdb.LegacyTxLookupEntry{BlockHash: blockHash, BlockIndex: blockNumber, Index: txIndex}
bc.txLookupCache.Add(hash, lookup)
return lookup
}
// Config retrieves the chain's fork configuration.
func (bc *BlockChain) Config() *params.ChainConfig { return bc.chainConfig }
// Engine retrieves the blockchain's consensus engine.
func (bc *BlockChain) Engine() consensus.Engine { return bc.engine }
// SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.
func (bc *BlockChain) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription {
return bc.scope.Track(bc.rmLogsFeed.Subscribe(ch))
}
// SubscribeChainEvent registers a subscription of ChainEvent.
func (bc *BlockChain) SubscribeChainEvent(ch chan<- ChainEvent) event.Subscription {
return bc.scope.Track(bc.chainFeed.Subscribe(ch))
}
// SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.
func (bc *BlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription {
return bc.scope.Track(bc.chainHeadFeed.Subscribe(ch))
}
// SubscribeChainSideEvent registers a subscription of ChainSideEvent.
func (bc *BlockChain) SubscribeChainSideEvent(ch chan<- ChainSideEvent) event.Subscription {
return bc.scope.Track(bc.chainSideFeed.Subscribe(ch))
}
// SubscribeLogsEvent registers a subscription of []*types.Log.
func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
return bc.scope.Track(bc.logsFeed.Subscribe(ch))
}
// SubscribeBlockProcessingEvent registers a subscription of bool where true means
// block processing has started while false means it has stopped.
func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription {
return bc.scope.Track(bc.blockProcFeed.Subscribe(ch))
}
core/blockchain_reader.go 0 → 100644
View file @ c641cff5
// 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 core
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/state/snapshot"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
)
// CurrentHeader retrieves the current head header of the canonical chain. The
// header is retrieved from the HeaderChain's internal cache.
func (bc *BlockChain) CurrentHeader() *types.Header {
return bc.hc.CurrentHeader()
}
// CurrentBlock retrieves the current head block of the canonical chain. The
// block is retrieved from the blockchain's internal cache.
func (bc *BlockChain) CurrentBlock() *types.Block {
return bc.currentBlock.Load().(*types.Block)
}
// CurrentFastBlock retrieves the current fast-sync head block of the canonical
// chain. The block is retrieved from the blockchain's internal cache.
func (bc *BlockChain) CurrentFastBlock() *types.Block {
return bc.currentFastBlock.Load().(*types.Block)
}
// HasHeader checks if a block header is present in the database or not, caching
// it if present.
func (bc *BlockChain) HasHeader(hash common.Hash, number uint64) bool {
return bc.hc.HasHeader(hash, number)
}
// GetHeader retrieves a block header from the database by hash and number,
// caching it if found.
func (bc *BlockChain) GetHeader(hash common.Hash, number uint64) *types.Header {
return bc.hc.GetHeader(hash, number)
}
// GetHeaderByHash retrieves a block header from the database by hash, caching it if
// found.
func (bc *BlockChain) GetHeaderByHash(hash common.Hash) *types.Header {
return bc.hc.GetHeaderByHash(hash)
}
// GetHeaderByNumber retrieves a block header from the database by number,
// caching it (associated with its hash) if found.
func (bc *BlockChain) GetHeaderByNumber(number uint64) *types.Header {
return bc.hc.GetHeaderByNumber(number)
}
// GetBody retrieves a block body (transactions and uncles) from the database by
// hash, caching it if found.
func (bc *BlockChain) GetBody(hash common.Hash) *types.Body {
// Short circuit if the body's already in the cache, retrieve otherwise
if cached, ok := bc.bodyCache.Get(hash); ok {
body := cached.(*types.Body)
return body
}
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
body := rawdb.ReadBody(bc.db, hash, *number)
if body == nil {
return nil
}
// Cache the found body for next time and return
bc.bodyCache.Add(hash, body)
return body
}
// GetBodyRLP retrieves a block body in RLP encoding from the database by hash,
// caching it if found.
func (bc *BlockChain) GetBodyRLP(hash common.Hash) rlp.RawValue {
// Short circuit if the body's already in the cache, retrieve otherwise
if cached, ok := bc.bodyRLPCache.Get(hash); ok {
return cached.(rlp.RawValue)
}
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
body := rawdb.ReadBodyRLP(bc.db, hash, *number)
if len(body) == 0 {
return nil
}
// Cache the found body for next time and return
bc.bodyRLPCache.Add(hash, body)
return body
}
// HasBlock checks if a block is fully present in the database or not.
func (bc *BlockChain) HasBlock(hash common.Hash, number uint64) bool {
if bc.blockCache.Contains(hash) {
return true
}
return rawdb.HasBody(bc.db, hash, number)
}
// HasFastBlock checks if a fast block is fully present in the database or not.
func (bc *BlockChain) HasFastBlock(hash common.Hash, number uint64) bool {
if !bc.HasBlock(hash, number) {
return false
}
if bc.receiptsCache.Contains(hash) {
return true
}
return rawdb.HasReceipts(bc.db, hash, number)
}
// GetBlock retrieves a block from the database by hash and number,
// caching it if found.
func (bc *BlockChain) GetBlock(hash common.Hash, number uint64) *types.Block {
// Short circuit if the block's already in the cache, retrieve otherwise
if block, ok := bc.blockCache.Get(hash); ok {
return block.(*types.Block)
}
block := rawdb.ReadBlock(bc.db, hash, number)
if block == nil {
return nil
}
// Cache the found block for next time and return
bc.blockCache.Add(block.Hash(), block)
return block
}
// GetBlockByHash retrieves a block from the database by hash, caching it if found.
func (bc *BlockChain) GetBlockByHash(hash common.Hash) *types.Block {
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
return bc.GetBlock(hash, *number)
}
// GetBlockByNumber retrieves a block from the database by number, caching it
// (associated with its hash) if found.
func (bc *BlockChain) GetBlockByNumber(number uint64) *types.Block {
hash := rawdb.ReadCanonicalHash(bc.db, number)
if hash == (common.Hash{}) {
return nil
}
return bc.GetBlock(hash, number)
}
// GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors.
// [deprecated by eth/62]
func (bc *BlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []*types.Block) {
number := bc.hc.GetBlockNumber(hash)
if number == nil {
return nil
}
for i := 0; i < n; i++ {
block := bc.GetBlock(hash, *number)
if block == nil {
break
}
blocks = append(blocks, block)
hash = block.ParentHash()
*number--
}
return
}
// GetReceiptsByHash retrieves the receipts for all transactions in a given block.
func (bc *BlockChain) GetReceiptsByHash(hash common.Hash) types.Receipts {
if receipts, ok := bc.receiptsCache.Get(hash); ok {
return receipts.(types.Receipts)
}
number := rawdb.ReadHeaderNumber(bc.db, hash)
if number == nil {
return nil
}
receipts := rawdb.ReadReceipts(bc.db, hash, *number, bc.chainConfig)
if receipts == nil {
return nil
}
bc.receiptsCache.Add(hash, receipts)
return receipts
}
// GetUnclesInChain retrieves all the uncles from a given block backwards until
// a specific distance is reached.
func (bc *BlockChain) GetUnclesInChain(block *types.Block, length int) []*types.Header {
uncles := []*types.Header{}
for i := 0; block != nil && i < length; i++ {
uncles = append(uncles, block.Uncles()...)
block = bc.GetBlock(block.ParentHash(), block.NumberU64()-1)
}
return uncles
}
// GetCanonicalHash returns the canonical hash for a given block number
func (bc *BlockChain) GetCanonicalHash(number uint64) common.Hash {
return bc.hc.GetCanonicalHash(number)
}
// GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or
// a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the
// number of blocks to be individually checked before we reach the canonical chain.
//
// Note: ancestor == 0 returns the same block, 1 returns its parent and so on.
func (bc *BlockChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64) {
return bc.hc.GetAncestor(hash, number, ancestor, maxNonCanonical)
}
// GetTransactionLookup retrieves the lookup associate with the given transaction
// hash from the cache or database.
func (bc *BlockChain) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry {
// Short circuit if the txlookup already in the cache, retrieve otherwise
if lookup, exist := bc.txLookupCache.Get(hash); exist {
return lookup.(*rawdb.LegacyTxLookupEntry)
}
tx, blockHash, blockNumber, txIndex := rawdb.ReadTransaction(bc.db, hash)
if tx == nil {
return nil
}
lookup := &rawdb.LegacyTxLookupEntry{BlockHash: blockHash, BlockIndex: blockNumber, Index: txIndex}
bc.txLookupCache.Add(hash, lookup)
return lookup
}
// GetTd retrieves a block's total difficulty in the canonical chain from the
// database by hash and number, caching it if found.
func (bc *BlockChain) GetTd(hash common.Hash, number uint64) *big.Int {
return bc.hc.GetTd(hash, number)
}
// HasState checks if state trie is fully present in the database or not.
func (bc *BlockChain) HasState(hash common.Hash) bool {
_, err := bc.stateCache.OpenTrie(hash)
return err == nil
}
// HasBlockAndState checks if a block and associated state trie is fully present
// in the database or not, caching it if present.
func (bc *BlockChain) HasBlockAndState(hash common.Hash, number uint64) bool {
// Check first that the block itself is known
block := bc.GetBlock(hash, number)
if block == nil {
return false
}
return bc.HasState(block.Root())
}
// TrieNode retrieves a blob of data associated with a trie node
// either from ephemeral in-memory cache, or from persistent storage.
func (bc *BlockChain) TrieNode(hash common.Hash) ([]byte, error) {
return bc.stateCache.TrieDB().Node(hash)
}
// ContractCode retrieves a blob of data associated with a contract hash
// either from ephemeral in-memory cache, or from persistent storage.
func (bc *BlockChain) ContractCode(hash common.Hash) ([]byte, error) {
return bc.stateCache.ContractCode(common.Hash{}, hash)
}
// ContractCodeWithPrefix retrieves a blob of data associated with a contract
// hash either from ephemeral in-memory cache, or from persistent storage.
//
// If the code doesn't exist in the in-memory cache, check the storage with
// new code scheme.
func (bc *BlockChain) ContractCodeWithPrefix(hash common.Hash) ([]byte, error) {
type codeReader interface {
ContractCodeWithPrefix(addrHash, codeHash common.Hash) ([]byte, error)
}
return bc.stateCache.(codeReader).ContractCodeWithPrefix(common.Hash{}, hash)
}
// State returns a new mutable state based on the current HEAD block.
func (bc *BlockChain) State() (*state.StateDB, error) {
return bc.StateAt(bc.CurrentBlock().Root())
}
// StateAt returns a new mutable state based on a particular point in time.
func (bc *BlockChain) StateAt(root common.Hash) (*state.StateDB, error) {
return state.New(root, bc.stateCache, bc.snaps)
}
// Config retrieves the chain's fork configuration.
func (bc *BlockChain) Config() *params.ChainConfig { return bc.chainConfig }
// Engine retrieves the blockchain's consensus engine.
func (bc *BlockChain) Engine() consensus.Engine { return bc.engine }
// Snapshots returns the blockchain snapshot tree.
func (bc *BlockChain) Snapshots() *snapshot.Tree {
return bc.snaps
}
// Validator returns the current validator.
func (bc *BlockChain) Validator() Validator {
return bc.validator
}
// Processor returns the current processor.
func (bc *BlockChain) Processor() Processor {
return bc.processor
}
// StateCache returns the caching database underpinning the blockchain instance.
func (bc *BlockChain) StateCache() state.Database {
return bc.stateCache
}
// GasLimit returns the gas limit of the current HEAD block.
func (bc *BlockChain) GasLimit() uint64 {
return bc.CurrentBlock().GasLimit()
}
// Genesis retrieves the chain's genesis block.
func (bc *BlockChain) Genesis() *types.Block {
return bc.genesisBlock
}
// GetVMConfig returns the block chain VM config.
func (bc *BlockChain) GetVMConfig() *vm.Config {
return &bc.vmConfig
}
// SetTxLookupLimit is responsible for updating the txlookup limit to the
// original one stored in db if the new mismatches with the old one.
func (bc *BlockChain) SetTxLookupLimit(limit uint64) {
bc.txLookupLimit = limit
}
// TxLookupLimit retrieves the txlookup limit used by blockchain to prune
// stale transaction indices.
func (bc *BlockChain) TxLookupLimit() uint64 {
return bc.txLookupLimit
}
// SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.
func (bc *BlockChain) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription {
return bc.scope.Track(bc.rmLogsFeed.Subscribe(ch))
}
// SubscribeChainEvent registers a subscription of ChainEvent.
func (bc *BlockChain) SubscribeChainEvent(ch chan<- ChainEvent) event.Subscription {
return bc.scope.Track(bc.chainFeed.Subscribe(ch))
}
// SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.
func (bc *BlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription {
return bc.scope.Track(bc.chainHeadFeed.Subscribe(ch))
}
// SubscribeChainSideEvent registers a subscription of ChainSideEvent.
func (bc *BlockChain) SubscribeChainSideEvent(ch chan<- ChainSideEvent) event.Subscription {
return bc.scope.Track(bc.chainSideFeed.Subscribe(ch))
}
// SubscribeLogsEvent registers a subscription of []*types.Log.
func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
return bc.scope.Track(bc.logsFeed.Subscribe(ch))
}
// SubscribeBlockProcessingEvent registers a subscription of bool where true means
// block processing has started while false means it has stopped.
func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription {
return bc.scope.Track(bc.blockProcFeed.Subscribe(ch))
}
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