chain

package
v0.3.1 Latest Latest
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 Go to latest Published: Nov 23, 2021 License: GPL-3.0, GPL-3.0 Imports: 47 Imported by: 0

Documentation

Overview

Package core implements the Ethereum consensus protocol.

Index

Examples

Constants

View Source 
const (
	TriesInMemory = 128

	// BlockChainVersion ensures that an incompatible database forces a resync from scratch.
	//
	// Changelog:
	//
	// - Version 4
	//   The following incompatible database changes were added:
	//   * the `BlockNumber`, `TxHash`, `TxIndex`, `BlockHash` and `Index` fields of log are deleted
	//   * the `Bloom` field of receipt is deleted
	//   * the `BlockIndex` and `TxIndex` fields of txlookup are deleted
	// - Version 5
	//  The following incompatible database changes were added:
	//    * the `TxHash`, `GasCost`, and `ContractAddress` fields are no longer stored for a receipt
	//    * the `TxHash`, `GasCost`, and `ContractAddress` fields are computed by looking up the
	//      receipts' corresponding block
	// - Version 6
	//  The following incompatible database changes were added:
	//    * Transaction lookup information stores the corresponding block number instead of block hash
	// - Version 7
	//  The following incompatible database changes were added:
	//    * Use freezer as the ancient database to maintain all ancient data
	// - Version 8
	//  The following incompatible database changes were added:
	//    * New scheme for contract code in order to separate the codes and trie nodes
	BlockChainVersion uint64 = 8
)

Variables

View Source 
var (
	// ErrAlreadyKnown is returned if the transactions is already contained
	// within the pool.
	ErrAlreadyKnown = errors.New("already known")

	// ErrInvalidSender is returned if the transaction contains an invalid signature.
	ErrInvalidSender = errors.New("invalid sender")

	// ErrUnderpriced is returned if a transaction's gas price is below the minimum
	// configured for the transaction pool.
	ErrUnderpriced = errors.New("transaction underpriced")

	// ErrTxPoolOverflow is returned if the transaction pool is full and can't accpet
	// another remote transaction.
	ErrTxPoolOverflow = errors.New("txpool is full")

	// ErrReplaceUnderpriced is returned if a transaction is attempted to be replaced
	// with a different one without the required price bump.
	ErrReplaceUnderpriced = errors.New("replacement transaction underpriced")

	// ErrGasLimit is returned if a transaction's requested gas limit exceeds the
	// maximum allowance of the current block.
	ErrGasLimit = errors.New("exceeds block gas limit")

	// ErrNegativeValue is a sanity error to ensure no one is able to specify a
	// transaction with a negative value.
	ErrNegativeValue = errors.New("negative value")

	// ErrOversizedData is returned if the input data of a transaction is greater
	// than some meaningful limit a user might use. This is not a consensus error
	// making the transaction invalid, rather a DOS protection.
	ErrOversizedData = errors.New("oversized data")
)
View Source 
var BadHashes = map[common.Hash]bool{
	common.HexToHash("05bef30ef572270f654746da22639a7a0c97dd97a7050b9e252391996aaeb689"): true,
	common.HexToHash("7d05d08cbc596a2e5e4f13b80a743e53e09221b5323c3a61946b20873e58583f"): true,
}

BadHashes represent a set of manually tracked bad hashes (usually hard forks)

View Source 
var DBGenesisSupplyKey = []byte("genesis-supply-genesis")
View Source 
var DefaultTxPoolConfig = TxPoolConfig{
	Journal:   "transactions.rlp",
	Rejournal: time.Hour,

	PriceLimit: 1,
	PriceBump:  10,

	AccountSlots: 16,
	GlobalSlots:  4096 + 1024,
	AccountQueue: 64,
	GlobalQueue:  1024,

	Lifetime: 3 * time.Hour,
}

DefaultTxPoolConfig contains the default configurations for the transaction pool.

View Source 
var SenderCacher = newTxSenderCacher(runtime.NumCPU())

SenderCacher is a concurrent transaction sender recoverer and cacher.

Functions

func ApplyTransaction added in v0.3.1 

func ApplyTransaction(config *params.ChainConfig, bc abstract.ChainContext, author *common.Address, gp *core.GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error)

ApplyTransaction attempts to apply a transaction to the given state database and uses the input parameters for its environment. It returns the receipt for the transaction, gas used and an error if the transaction failed, indicating the block was invalid.

func CalcGasLimit 

func CalcGasLimit(parentGasLimit, desiredLimit uint64) uint64

CalcGasLimit computes the gas limit of the next block after parent. It aims to keep the baseline gas close to the provided target, and increase it towards the target if the baseline gas is lower.

func CanTransfer added in v0.3.1 

func CanTransfer(db vm.StateDB, addr common.Address, amount *big.Int) bool

CanTransfer checks whether there are enough funds in the address' account to make a transfer. This does not take the necessary gas in to account to make the transfer valid.

func GenerateChain 

func GenerateChain(config *params.ChainConfig, parent *types.Block, engine consensus.Engine, db ethdb.Database, n int, gen func(int, *BlockGen)) ([]*types.Block, []types.Receipts)

GenerateChain creates a chain of n blocks. The first block's parent will be the provided parent. db is used to store intermediate states and should contain the parent's state trie.

The generator function is called with a new block generator for every block. Any transactions and uncles added to the generator become part of the block. If gen is nil, the blocks will be empty and their coinbase will be the zero address.

Blocks created by GenerateChain do not contain valid proof of work values. Inserting them into BlockChain requires use of FakePow or a similar non-validating proof of work implementation.

Example 
var (
	key1, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
	key2, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a")
	key3, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee")
	addr1   = crypto.PubkeyToAddress(key1.PublicKey)
	addr2   = crypto.PubkeyToAddress(key2.PublicKey)
	addr3   = crypto.PubkeyToAddress(key3.PublicKey)
	db      = rawdb.NewMemoryDatabase()
)

// Ensure that key1 has some funds in the genesis block.
gspec := &Genesis{
	Config: &params.ChainConfig{HomesteadBlock: new(big.Int)},
	Alloc:  GenesisAlloc{addr1: {Balance: big.NewInt(1000000)}},
}
genesis := gspec.MustCommit(db)

// This call generates a chain of 5 blocks. The function runs for
// each block and adds different features to gen based on the
// block index.
signer := types.HomesteadSigner{}
chain, _ := GenerateChain(gspec.Config, genesis, consensustest.NewFaker(), db, 5, func(i int, gen *BlockGen) {
	switch i {
	case 0:
		// In block 1, addr1 sends addr2 some ether.
		tx, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), ethparams.TxGas, nil, nil), signer, key1)
		gen.AddTx(tx)
	case 1:
		// In block 2, addr1 sends some more ether to addr2.
		// addr2 passes it on to addr3.
		tx1, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(1000), ethparams.TxGas, nil, nil), signer, key1)
		tx2, _ := types.SignTx(types.NewTransaction(gen.TxNonce(addr2), addr3, big.NewInt(1000), ethparams.TxGas, nil, nil), signer, key2)
		gen.AddTx(tx1)
		gen.AddTx(tx2)
	case 2:
		// Block 3 is empty but was mined by addr3.
		gen.SetCoinbase(addr3)
		gen.SetExtra([]byte("yeehaw"))
	case 3:
		// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data).
		b2 := gen.PrevBlock(1).Header()
		b2.Extra = []byte("foo")
		gen.AddUncle(b2)
		b3 := gen.PrevBlock(2).Header()
		b3.Extra = []byte("foo")
		gen.AddUncle(b3)
	}
})

// Import the chain. This runs all block validation rules.
blockchain, _ := NewBlockChain(db, nil, gspec.Config, consensustest.NewFaker(), vm.Config{}, nil, nil)
defer blockchain.Stop()

if i, err := blockchain.InsertChain(chain); err != nil {
	fmt.Printf("insert error (block %d): %v\n", chain[i].NumberU64(), err)
	return
}

state, _ := blockchain.State()
fmt.Printf("last block: #%d\n", blockchain.CurrentBlock().Number())
fmt.Println("balance of addr1:", state.GetBalance(addr1))
fmt.Println("balance of addr2:", state.GetBalance(addr2))
fmt.Println("balance of addr3:", state.GetBalance(addr3))

Output:

last block: #5
balance of addr1: 989000
balance of addr2: 10000
balance of addr3: 19687500000000001000

func GenesisBlockForTesting 

func GenesisBlockForTesting(db ethdb.Database, addr common.Address, balance *big.Int) *types.Block

GenesisBlockForTesting creates and writes a block in which addr has the given wei balance.

func GetHashFn added in v0.3.1 

func GetHashFn(ref *types.Header, chain abstract.ChainContext) func(n uint64) common.Hash

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func IntrinsicGas added in v0.3.1 

func IntrinsicGas(data []byte, accessList types.AccessList, isContractCreation bool, isHomestead, isEIP2028 bool) (uint64, error)

IntrinsicGas computes the 'intrinsic gas' for a message with the given data.

func NewEVMBlockContext added in v0.3.1 

func NewEVMBlockContext(header *types.Header, chain abstract.ChainContext, author *common.Address) vm.BlockContext

NewEVMBlockContext creates a new context for use in the EVM.

func NewEVMTxContext added in v0.3.1 

func NewEVMTxContext(msg Message) vm.TxContext

NewEVMTxContext creates a new transaction context for a single transaction.

func NewStatePrefetcher added in v0.3.1 

func NewStatePrefetcher(config *params.ChainConfig, bc abstract.ChainContext, engine consensus.Engine) *statePrefetcher

NewStatePrefetcher initialises a new statePrefetcher.

func SetupGenesisBlock 

func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig, common.Hash, error)

SetupGenesisBlock writes or updates the genesis block in db. The block that will be used is: 

                     genesis == nil       genesis != nil
                  +------------------------------------------
db has no genesis |  main-net default  |  genesis
db has genesis    |  from DB           |  genesis (if compatible)

The stored chain configuration will be updated if it is compatible (i.e. does not specify a fork block below the local head block). In case of a conflict, the error is a *ethparams.ConfigCompatError and the new, unwritten config is returned.

The returned chain configuration is never nil.

func SetupGenesisBlockWithOverride 

func SetupGenesisBlockWithOverride(db ethdb.Database, genesis *Genesis, overrideLondon *big.Int) (*params.ChainConfig, common.Hash, error)

func Transfer added in v0.3.1 

func Transfer(db vm.StateDB, sender, recipient common.Address, amount *big.Int)

Transfer subtracts amount from sender and adds amount to recipient using the given Db

func ValidateTransactorBalanceCoversTx added in v0.3.1 

func ValidateTransactorBalanceCoversTx(tx *types.Transaction, from common.Address, currentState *state.StateDB, currentVMRunner vm.EVMRunner, eHardfork bool) error

ValidateTransactorBalanceCoversTx validates transactor has enough funds to cover transaction cost: V + GP * GL.

Types

type BlockChain 

type BlockChain struct {
	// contains filtered or unexported fields
}

BlockChain represents the canonical chain given a database with a genesis block. The Blockchain manages chain imports, reverts, chain reorganisations.

Importing blocks in to the block chain happens according to the set of rules defined by the two stage Validator. Processing of blocks is done using the Processor which processes the included transaction. The validation of the state is done in the second part of the Validator. Failing results in aborting of the import.

The BlockChain also helps in returning blocks from **any** chain included in the database as well as blocks that represents the canonical chain. It's important to note that GetBlock can return any block and does not need to be included in the canonical one where as GetBlockByNumber always represents the canonical chain.

func NewBlockChain 

func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(block *types.Block) bool, txLookupLimit *uint64) (*BlockChain, error)

NewBlockChain returns a fully initialised block chain using information available in the database. It initialises the default Ethereum Validator and Processor.

func (*BlockChain) Config 

func (bc *BlockChain) Config() *params.ChainConfig

Config retrieves the chain's fork configuration.

func (*BlockChain) ContractCode 

func (bc *BlockChain) ContractCode(hash common.Hash) ([]byte, error)

ContractCode retrieves a blob of data associated with a contract hash either from ephemeral in-memory cache, or from persistent storage.

func (*BlockChain) ContractCodeWithPrefix 

func (bc *BlockChain) ContractCodeWithPrefix(hash common.Hash) ([]byte, error)

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 (*BlockChain) CurrentBlock 

func (bc *BlockChain) CurrentBlock() *types.Block

CurrentBlock retrieves the current head block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*BlockChain) CurrentFastBlock 

func (bc *BlockChain) CurrentFastBlock() *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 (*BlockChain) CurrentHeader 

func (bc *BlockChain) CurrentHeader() *types.Header

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the HeaderChain's internal cache.

func (*BlockChain) Engine 

func (bc *BlockChain) Engine() consensus.Engine

Engine retrieves the blockchain's consensus engine.

func (*BlockChain) Export 

func (bc *BlockChain) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*BlockChain) ExportN 

func (bc *BlockChain) ExportN(w io.Writer, first uint64, last uint64) error

ExportN writes a subset of the active chain to the given writer.

func (*BlockChain) FastSyncCommitHead 

func (bc *BlockChain) FastSyncCommitHead(hash common.Hash) error

FastSyncCommitHead sets the current head block to the one defined by the hash irrelevant what the chain contents were prior.

func (*BlockChain) GasLimit 

func (bc *BlockChain) GasLimit() uint64

GasLimit returns the gas limit of the current HEAD block.

func (*BlockChain) Genesis 

func (bc *BlockChain) Genesis() *types.Block

Genesis retrieves the chain's genesis block.

func (*BlockChain) GetAncestor 

func (bc *BlockChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

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 (*BlockChain) GetBlock 

func (bc *BlockChain) GetBlock(hash common.Hash, number uint64) *types.Block

GetBlock retrieves a block from the database by hash and number, caching it if found.

func (*BlockChain) GetBlockByHash 

func (bc *BlockChain) GetBlockByHash(hash common.Hash) *types.Block

GetBlockByHash retrieves a block from the database by hash, caching it if found.

func (*BlockChain) GetBlockByNumber 

func (bc *BlockChain) GetBlockByNumber(number uint64) *types.Block

GetBlockByNumber retrieves a block from the database by number, caching it (associated with its hash) if found.

func (*BlockChain) GetBlocksFromHash 

func (bc *BlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []*types.Block)

GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors. [deprecated by eth/62]

func (*BlockChain) GetBody 

func (bc *BlockChain) GetBody(hash common.Hash) *types.Body

GetBody retrieves a block body (transactions and uncles) from the database by hash, caching it if found.

func (*BlockChain) GetBodyRLP 

func (bc *BlockChain) GetBodyRLP(hash common.Hash) rlp.RawValue

GetBodyRLP retrieves a block body in RLP encoding from the database by hash, caching it if found.

func (*BlockChain) GetCanonicalHash 

func (bc *BlockChain) GetCanonicalHash(number uint64) common.Hash

GetCanonicalHash returns the canonical hash for a given block number

func (*BlockChain) GetHeader 

func (bc *BlockChain) GetHeader(hash common.Hash, number uint64) *types.Header

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*BlockChain) GetHeaderByHash 

func (bc *BlockChain) GetHeaderByHash(hash common.Hash) *types.Header

GetHeaderByHash retrieves a block header from the database by hash, caching it if found.

func (*BlockChain) GetHeaderByNumber 

func (bc *BlockChain) GetHeaderByNumber(number uint64) *types.Header

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*BlockChain) GetReceiptsByHash 

func (bc *BlockChain) GetReceiptsByHash(hash common.Hash) types.Receipts

GetReceiptsByHash retrieves the receipts for all transactions in a given block.

func (*BlockChain) GetTd 

func (bc *BlockChain) GetTd(hash common.Hash, number uint64) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*BlockChain) GetTransactionLookup 

func (bc *BlockChain) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry

GetTransactionLookup retrieves the lookup associate with the given transaction hash from the cache or database.

func (*BlockChain) GetVMConfig 

func (bc *BlockChain) GetVMConfig() *vm.Config

GetVMConfig returns the block chain VM config.

func (*BlockChain) HasBadBlock added in v0.3.1 

func (bc *BlockChain) HasBadBlock(hash common.Hash) bool

HasBadBlock returns whether the block with the hash is a bad block

func (*BlockChain) HasBlock 

func (bc *BlockChain) HasBlock(hash common.Hash, number uint64) bool

HasBlock checks if a block is fully present in the database or not.

func (*BlockChain) HasBlockAndState 

func (bc *BlockChain) HasBlockAndState(hash common.Hash, number uint64) bool

HasBlockAndState checks if a block and associated state trie is fully present in the database or not, caching it if present.

func (*BlockChain) HasFastBlock 

func (bc *BlockChain) HasFastBlock(hash common.Hash, number uint64) bool

HasFastBlock checks if a fast block is fully present in the database or not.

func (*BlockChain) HasHeader 

func (bc *BlockChain) HasHeader(hash common.Hash, number uint64) bool

HasHeader checks if a block header is present in the database or not, caching it if present.

func (*BlockChain) HasState 

func (bc *BlockChain) HasState(hash common.Hash) bool

HasState checks if state trie is fully present in the database or not.

func (*BlockChain) InsertChain 

func (bc *BlockChain) InsertChain(chain types.Blocks) (int, error)

InsertChain attempts to insert the given batch of blocks in to the canonical chain or, otherwise, create a fork. If an error is returned it will return the index number of the failing block as well an error describing what went wrong.

After insertion is done, all accumulated events will be fired.

func (*BlockChain) InsertChainWithoutSealVerification 

func (bc *BlockChain) InsertChainWithoutSealVerification(block *types.Block) (int, error)

InsertChainWithoutSealVerification works exactly the same except for seal verification, seal verification is omitted

func (*BlockChain) InsertHeaderChain 

func (bc *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error)

InsertHeaderChain attempts to insert the given header chain in to the local chain, possibly creating a reorg. If an error is returned, it will return the index number of the failing header as well an error describing what went wrong.

The verify parameter can be used to fine tune whether nonce verification should be done or not. The reason behind the optional check is because some of the header retrieval mechanisms already need to verify nonces, as well as because nonces can be verified sparsely, not needing to check each.

func (*BlockChain) InsertReceiptChain 

func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain []types.Receipts, ancientLimit uint64) (int, error)

InsertReceiptChain attempts to complete an already existing header chain with transaction and receipt data.

func (*BlockChain) NewEVMRunner added in v0.3.1 

func (bc *BlockChain) NewEVMRunner(header *types.Header, state vm.StateDB) vm.EVMRunner

NewEVMRunner creates the System's EVMRunner for given header & sttate

func (*BlockChain) NewEVMRunnerForCurrentBlock added in v0.3.1 

func (bc *BlockChain) NewEVMRunnerForCurrentBlock() (vm.EVMRunner, error)

func (*BlockChain) Processor 

func (bc *BlockChain) Processor() abstract.Processor

Processor returns the current processor.

func (*BlockChain) RecoverRandomnessCache added in v0.3.1 

func (bc *BlockChain) RecoverRandomnessCache(commitment common.Hash, commitmentBlockHash common.Hash) error

RecoverRandomnessCache will do a search for the block that was used to generate the given commitment. Specifically, it will find the block that this node authored and that block's parent hash is used to created the commitment. The search is a reverse iteration of the node's local chain starting at the block where it's hash is the given commitmentBlockHash.

func (*BlockChain) Reset 

func (bc *BlockChain) Reset() error

Reset purges the entire blockchain, restoring it to its genesis state.

func (*BlockChain) ResetWithGenesisBlock 

func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) error

ResetWithGenesisBlock purges the entire blockchain, restoring it to the specified genesis state.

func (*BlockChain) SetHead 

func (bc *BlockChain) SetHead(head uint64) error

SetHead rewinds the local chain to a new head. Depending on whether the node was fast synced or full synced and in which state, the method will try to delete minimal data from disk whilst retaining chain consistency.

func (*BlockChain) SetHeadBeyondRoot 

func (bc *BlockChain) SetHeadBeyondRoot(head uint64, root common.Hash) (uint64, error)

SetHeadBeyondRoot rewinds the local chain to a new head with the extra condition that the rewind must pass the specified state root. This method is meant to be used when rewinding with snapshots enabled to ensure that we go back further than persistent disk layer. Depending on whether the node was fast synced or full, and in which state, the method will try to delete minimal data from disk whilst retaining chain consistency.

The method returns the block number where the requested root cap was found.

func (*BlockChain) SetTxLookupLimit 

func (bc *BlockChain) SetTxLookupLimit(limit uint64)

SetTxLookupLimit is responsible for updating the txlookup limit to the original one stored in db if the new mismatches with the old one.

func (*BlockChain) Snapshots 

func (bc *BlockChain) Snapshots() *snapshot.Tree

Snapshots returns the blockchain snapshot tree.

func (*BlockChain) State 

func (bc *BlockChain) State() (*state.StateDB, error)

State returns a new mutable state based on the current HEAD block.

func (*BlockChain) StateAt 

func (bc *BlockChain) StateAt(root common.Hash) (*state.StateDB, error)

StateAt returns a new mutable state based on a particular point in time.

func (*BlockChain) StateCache 

func (bc *BlockChain) StateCache() state.Database

StateCache returns the caching database underpinning the blockchain instance.

func (*BlockChain) Stop 

func (bc *BlockChain) Stop()

Stop stops the blockchain service. If any imports are currently in progress it will abort them using the procInterrupt.

func (*BlockChain) StopInsert 

func (bc *BlockChain) StopInsert()

StopInsert interrupts all insertion methods, causing them to return errInsertionInterrupted as soon as possible. Insertion is permanently disabled after calling this method.

func (*BlockChain) SubscribeBlockProcessingEvent 

func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription

SubscribeBlockProcessingEvent registers a subscription of bool where true means block processing has started while false means it has stopped.

func (*BlockChain) SubscribeChainEvent 

func (bc *BlockChain) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription

SubscribeChainEvent registers a subscription of ChainEvent.

func (*BlockChain) SubscribeChainHeadEvent 

func (bc *BlockChain) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*BlockChain) SubscribeChainSideEvent 

func (bc *BlockChain) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*BlockChain) SubscribeLogsEvent 

func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription

SubscribeLogsEvent registers a subscription of []*types.Log.

func (*BlockChain) SubscribeRemovedLogsEvent 

func (bc *BlockChain) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

func (*BlockChain) TrieNode 

func (bc *BlockChain) TrieNode(hash common.Hash) ([]byte, error)

TrieNode retrieves a blob of data associated with a trie node either from ephemeral in-memory cache, or from persistent storage.

func (*BlockChain) TxLookupLimit 

func (bc *BlockChain) TxLookupLimit() uint64

TxLookupLimit retrieves the txlookup limit used by blockchain to prune stale transaction indices.

func (*BlockChain) Validator 

func (bc *BlockChain) Validator() abstract.Validator

Validator returns the current validator.

func (*BlockChain) WriteBlockWithState 

func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.Receipt, logs []*types.Log, state *state.StateDB, emitHeadEvent bool) error

WriteBlockWithState writes the block and all associated state to the database.

type BlockContext added in v0.3.1 

type BlockContext struct {
	// contains filtered or unexported fields
}

BlockContext represents contextual information about the blockchain state for a given block

func NewBlockContext added in v0.3.1 

func NewBlockContext(vmRunner vm.EVMRunner) BlockContext

NewBlockContext creates a block context for a given block (represented by the header & state). state MUST be pointing to header's stateRoot

type BlockGen 

type BlockGen struct {
	// contains filtered or unexported fields
}

BlockGen creates blocks for testing. See GenerateChain for a detailed explanation.

func (*BlockGen) AddTx 

func (b *BlockGen) AddTx(tx *types.Transaction)

AddTx adds a transaction to the generated block. If no coinbase has been set, the block's coinbase is set to the zero address.

AddTx panics if the transaction cannot be executed. In addition to the protocol-imposed limitations (gas limit, etc.), there are some further limitations on the content of transactions that can be added. Notably, contract code relying on the BLOCKHASH instruction will panic during execution.

func (*BlockGen) AddTxWithChain 

func (b *BlockGen) AddTxWithChain(bc *BlockChain, tx *types.Transaction)

AddTxWithChain adds a transaction to the generated block. If no coinbase has been set, the block's coinbase is set to the zero address.

AddTxWithChain panics if the transaction cannot be executed. In addition to the protocol-imposed limitations (gas limit, etc.), there are some further limitations on the content of transactions that can be added. If contract code relies on the BLOCKHASH instruction, the block in chain will be returned.

func (*BlockGen) AddUncheckedReceipt 

func (b *BlockGen) AddUncheckedReceipt(receipt *types.Receipt)

AddUncheckedReceipt forcefully adds a receipts to the block without a backing transaction.

AddUncheckedReceipt will cause consensus failures when used during real chain processing. This is best used in conjunction with raw block insertion.

func (*BlockGen) AddUncheckedTx 

func (b *BlockGen) AddUncheckedTx(tx *types.Transaction)

AddUncheckedTx forcefully adds a transaction to the block without any validation.

AddUncheckedTx will cause consensus failures when used during real chain processing. This is best used in conjunction with raw block insertion.

func (*BlockGen) AddUncle 

func (b *BlockGen) AddUncle(h *types.Header)

AddUncle adds an uncle header to the generated block.

func (*BlockGen) BaseFee added in v0.3.1 

func (b *BlockGen) BaseFee() *big.Int

BaseFee returns the EIP-1559 base fee of the block being generated.

func (*BlockGen) GetBalance 

func (b *BlockGen) GetBalance(addr common.Address) *big.Int

GetBalance returns the balance of the given address at the generated block.

func (*BlockGen) Number 

func (b *BlockGen) Number() *big.Int

Number returns the block number of the block being generated.

func (*BlockGen) OffsetTime 

func (b *BlockGen) OffsetTime(seconds int64)

OffsetTime modifies the time instance of a block. It's useful to test scenarios where forking is not tied to chain length directly. NOTE: `gen.OffsetTime(int)` is used throughout the code in this test file to adjust the total difficulty. This made sense with Ethhash, but is no longer relevant to Istanbul consensus because difficulty is constant. These calls can likely be removed, but have not been as a matter of simplicity.

func (*BlockGen) PrevBlock 

func (b *BlockGen) PrevBlock(index int) *types.Block

PrevBlock returns a previously generated block by number. It panics if num is greater or equal to the number of the block being generated. For index -1, PrevBlock returns the parent block given to GenerateChain.

func (*BlockGen) SetCoinbase 

func (b *BlockGen) SetCoinbase(addr common.Address)

SetCoinbase sets the coinbase of the generated block. It can be called at most once.

func (*BlockGen) SetExtra 

func (b *BlockGen) SetExtra(data []byte)

SetExtra sets the extra data field of the generated block.

func (*BlockGen) SetNonce 

func (b *BlockGen) SetNonce(nonce types.BlockNonce)

SetNonce sets the nonce field of the generated block.

func (*BlockGen) TxNonce 

func (b *BlockGen) TxNonce(addr common.Address) uint64

TxNonce returns the next valid transaction nonce for the account at addr. It panics if the account does not exist.

type BlockValidator 

type BlockValidator struct {
	// contains filtered or unexported fields
}

BlockValidator is responsible for validating block headers, uncles and processed state.

BlockValidator implements Validator.

func NewBlockValidator 

func NewBlockValidator(config *params.ChainConfig, blockchain *BlockChain, engine consensus.Engine) *BlockValidator

NewBlockValidator returns a new block validator which is safe for re-use

func (*BlockValidator) ValidateBody 

func (v *BlockValidator) ValidateBody(block *types.Block) error

ValidateBody validates the given block's uncles and verifies the block header's transaction and uncle roots. The headers are assumed to be already validated at this point.

func (*BlockValidator) ValidateState 

func (v *BlockValidator) ValidateState(block *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas uint64) error

ValidateState validates the various changes that happen after a state transition, such as amount of used gas, the receipt roots and the state root itself. ValidateState returns a database batch if the validation was a success otherwise nil and an error is returned.

type CacheConfig 

type CacheConfig struct {
	TrieCleanLimit      int           // Memory allowance (MB) to use for caching trie nodes in memory
	TrieCleanJournal    string        // Disk journal for saving clean cache entries.
	TrieCleanRejournal  time.Duration // Time interval to dump clean cache to disk periodically
	TrieCleanNoPrefetch bool          // Whether to disable heuristic state prefetching for followup blocks
	TrieDirtyLimit      int           // Memory limit (MB) at which to start flushing dirty trie nodes to disk
	TrieDirtyDisabled   bool          // Whether to disable trie write caching and GC altogether (archive node)
	TrieTimeLimit       time.Duration // Time limit after which to flush the current in-memory trie to disk
	SnapshotLimit       int           // Memory allowance (MB) to use for caching snapshot entries in memory
	Preimages           bool          // Whether to store preimage of trie key to the disk

	SnapshotWait bool // Wait for snapshot construction on startup. TODO(karalabe): This is a dirty hack for testing, nuke it
}

CacheConfig contains the configuration values for the trie caching/pruning that's resident in a blockchain.

type DeleteBlockContentCallback 

type DeleteBlockContentCallback func(ethdb.KeyValueWriter, common.Hash, uint64)

DeleteBlockContentCallback is a callback function that is called by SetHead before each header is deleted.

type ExecutionResult added in v0.3.1 

type ExecutionResult struct {
	UsedGas    uint64 // Total used gas but include the refunded gas
	Err        error  // Any error encountered during the execution(listed in core/vm/errors.go)
	ReturnData []byte // Returned data from evm(function result or data supplied with revert opcode)
}

ExecutionResult includes all output after executing given evm message no matter the execution itself is successful or not.

func ApplyMessage added in v0.3.1 

func ApplyMessage(evm *vm.EVM, msg Message, gp *core.GasPool) (*ExecutionResult, error)

ApplyMessage computes the new state by applying the given message against the old state within the environment.

ApplyMessage returns the bytes returned by any EVM execution (if it took place), the gas used (which includes gas refunds) and an error if it failed. An error always indicates a core error meaning that the message would always fail for that particular state and would never be accepted within a block.

func (*ExecutionResult) Failed added in v0.3.1 

func (result *ExecutionResult) Failed() bool

Failed returns the indicator whether the execution is successful or not

func (*ExecutionResult) Return added in v0.3.1 

func (result *ExecutionResult) Return() []byte

Return is a helper function to help caller distinguish between revert reason and function return. Return returns the data after execution if no error occurs.

func (*ExecutionResult) Revert added in v0.3.1 

func (result *ExecutionResult) Revert() []byte

Revert returns the concrete revert reason if the execution is aborted by `REVERT` opcode. Note the reason can be nil if no data supplied with revert opcode.

func (*ExecutionResult) Unwrap added in v0.3.1 

func (result *ExecutionResult) Unwrap() error

Unwrap returns the internal evm error which allows us for further analysis outside.

type FakeChainReader 

type FakeChainReader struct {
	// contains filtered or unexported fields
}

func NewFakeChainReader 

func NewFakeChainReader(config *params.ChainConfig) *FakeChainReader

func (*FakeChainReader) Config 

func (cr *FakeChainReader) Config() *params.ChainConfig

Config returns the chain configuration.

func (*FakeChainReader) CurrentHeader 

func (cr *FakeChainReader) CurrentHeader() *types.Header

func (*FakeChainReader) GetBlock 

func (cr *FakeChainReader) GetBlock(hash common.Hash, number uint64) *types.Block

func (*FakeChainReader) GetHeader 

func (cr *FakeChainReader) GetHeader(hash common.Hash, number uint64) *types.Header

func (*FakeChainReader) GetHeaderByHash 

func (cr *FakeChainReader) GetHeaderByHash(hash common.Hash) *types.Header

func (*FakeChainReader) GetHeaderByNumber 

func (cr *FakeChainReader) GetHeaderByNumber(number uint64) *types.Header

type Genesis 

type Genesis struct {
	Config    *params.ChainConfig `json:"config"`
	Nonce     uint64              `json:"nonce"`
	Timestamp uint64              `json:"timestamp"`
	ExtraData []byte              `json:"extraData"`
	GasLimit  uint64              `json:"gasLimit"   gencodec:"required"`
	Mixhash   common.Hash         `json:"mixHash"`
	Coinbase  common.Address      `json:"coinbase"`
	Alloc     GenesisAlloc        `json:"alloc"      gencodec:"required"`

	// These fields are used for consensus tests. Please don't use them
	// in actual genesis blocks.
	Number     uint64      `json:"number"`
	GasUsed    uint64      `json:"gasUsed"`
	ParentHash common.Hash `json:"parentHash"`
	BaseFee    *big.Int    `json:"baseFeePerGas"`
}

Genesis specifies the header fields, state of a genesis block. It also defines hard fork switch-over blocks through the chain configuration.

func DefaultGenesisBlock 

func DefaultGenesisBlock() *Genesis

DefaultGenesisBlock returns the Ethereum main net genesis block.

func DefaultTestnetGenesisBlock 

func DefaultTestnetGenesisBlock() *Genesis

DefaultTestnetGenesisBlock returns the Ropsten network genesis block.

func DevnetGenesisBlock 

func DevnetGenesisBlock(faucet common.Address) *Genesis

DevnetGenesisBlock returns the 'geth --dev' genesis block.

func MainnetGenesisBlock added in v0.3.1 

func MainnetGenesisBlock() *Genesis

MainnetGenesisBlock returns the atlas main net genesis block.

func SingleGenesisBlock 

func SingleGenesisBlock(faucet common.Address) *Genesis

SingleGenesisBlock returns the 'geth --dev' genesis block.

func (*Genesis) Commit 

func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error)

Commit writes the block and state of a genesis specification to the database. The block is committed as the canonical head block.

func (Genesis) MarshalJSON 

func (g Genesis) MarshalJSON() ([]byte, error)

MarshalJSON marshals as JSON.

func (*Genesis) MustCommit 

func (g *Genesis) MustCommit(db ethdb.Database) *types.Block

MustCommit writes the genesis block and state to db, panicking on error. The block is committed as the canonical head block.

func (*Genesis) StoreGenesisSupply added in v0.3.1 

func (g *Genesis) StoreGenesisSupply(db ethdb.Database) error

StoreGenesisSupply computes the total supply of the genesis block and stores it in the db.

func (*Genesis) ToBlock 

func (g *Genesis) ToBlock(db ethdb.Database) *types.Block

ToBlock creates the genesis block and writes state of a genesis specification to the given database (or discards it if nil).

func (*Genesis) UnmarshalJSON 

func (g *Genesis) UnmarshalJSON(input []byte) error

UnmarshalJSON unmarshals from JSON.

type GenesisAccount 

type GenesisAccount struct {
	Code       []byte                      `json:"code,omitempty"`
	Storage    map[common.Hash]common.Hash `json:"storage,omitempty"`
	Balance    *big.Int                    `json:"balance" gencodec:"required"`
	Nonce      uint64                      `json:"nonce,omitempty"`
	PrivateKey []byte                      `json:"secretKey,omitempty"` // for tests
}

GenesisAccount is an account in the state of the genesis block.

func (GenesisAccount) MarshalJSON 

func (g GenesisAccount) MarshalJSON() ([]byte, error)

MarshalJSON marshals as JSON.

func (*GenesisAccount) UnmarshalJSON 

func (g *GenesisAccount) UnmarshalJSON(input []byte) error

UnmarshalJSON unmarshals from JSON.

type GenesisAlloc 

type GenesisAlloc map[common.Address]GenesisAccount

GenesisAlloc specifies the initial state that is part of the genesis block.

func (*GenesisAlloc) UnmarshalJSON 

func (ga *GenesisAlloc) UnmarshalJSON(data []byte) error

type GenesisMismatchError 

type GenesisMismatchError struct {
	Stored, New common.Hash
}

GenesisMismatchError is raised when trying to overwrite an existing genesis block with an incompatible one.

func (*GenesisMismatchError) Error 

func (e *GenesisMismatchError) Error() string

type HeaderChain 

type HeaderChain struct {
	// contains filtered or unexported fields
}

HeaderChain implements the basic block header chain logic that is shared by core.BlockChain and light.LightChain. It is not usable in itself, only as a part of either structure.

HeaderChain is responsible for maintaining the header chain including the header query and updating.

The components maintained by headerchain includes: (1) total difficult (2) header (3) block hash -> number mapping (4) canonical number -> hash mapping and (5) head header flag.

It is not thread safe either, the encapsulating chain structures should do the necessary mutex locking/unlocking.

func NewHeaderChain 

func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine consensus.Engine, procInterrupt func() bool) (*HeaderChain, error)

NewHeaderChain creates a new HeaderChain structure. ProcInterrupt points to the parent's interrupt semaphore.

func (*HeaderChain) Config 

func (hc *HeaderChain) Config() *params.ChainConfig

Config retrieves the header chain's chain configuration.

func (*HeaderChain) CurrentHeader 

func (hc *HeaderChain) CurrentHeader() *types.Header

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the HeaderChain's internal cache.

func (*HeaderChain) Engine 

func (hc *HeaderChain) Engine() consensus.Engine

Engine retrieves the header chain's consensus engine.

func (*HeaderChain) GetAncestor 

func (hc *HeaderChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

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 (*HeaderChain) GetBlock 

func (hc *HeaderChain) GetBlock(hash common.Hash, number uint64) *types.Block

GetBlock implements consensus.ChainReader, and returns nil for every input as a header chain does not have blocks available for retrieval.

func (*HeaderChain) GetBlockNumber 

func (hc *HeaderChain) GetBlockNumber(hash common.Hash) *uint64

GetBlockNumber retrieves the block number belonging to the given hash from the cache or database

func (*HeaderChain) GetCanonicalHash 

func (hc *HeaderChain) GetCanonicalHash(number uint64) common.Hash

func (*HeaderChain) GetHeader 

func (hc *HeaderChain) GetHeader(hash common.Hash, number uint64) *types.Header

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*HeaderChain) GetHeaderByHash 

func (hc *HeaderChain) GetHeaderByHash(hash common.Hash) *types.Header

GetHeaderByHash retrieves a block header from the database by hash, caching it if found.

func (*HeaderChain) GetHeaderByNumber 

func (hc *HeaderChain) GetHeaderByNumber(number uint64) *types.Header

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*HeaderChain) GetTd 

func (hc *HeaderChain) GetTd(hash common.Hash, number uint64) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*HeaderChain) HasHeader 

func (hc *HeaderChain) HasHeader(hash common.Hash, number uint64) bool

HasHeader checks if a block header is present in the database or not. In theory, if header is present in the database, all relative components like td and hash->number should be present too.

func (*HeaderChain) InsertHeaderChain 

func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, start time.Time) (WriteStatus, error)

InsertHeaderChain inserts the given headers.

The validity of the headers is NOT CHECKED by this method, i.e. they need to be validated by ValidateHeaderChain before calling InsertHeaderChain.

This insert is all-or-nothing. If this returns an error, no headers were written, otherwise they were all processed successfully.

The returned 'write status' says if the inserted headers are part of the canonical chain or a side chain.

func (*HeaderChain) SetCurrentHeader 

func (hc *HeaderChain) SetCurrentHeader(head *types.Header)

SetCurrentHeader sets the in-memory head header marker of the canonical chan as the given header.

func (*HeaderChain) SetGenesis 

func (hc *HeaderChain) SetGenesis(head *types.Header)

SetGenesis sets a new genesis block header for the chain

func (*HeaderChain) SetHead 

func (hc *HeaderChain) SetHead(head uint64, updateFn UpdateHeadBlocksCallback, delFn DeleteBlockContentCallback)

SetHead rewinds the local chain to a new head. Everything above the new head will be deleted and the new one set.

func (*HeaderChain) ValidateHeaderChain 

func (hc *HeaderChain) ValidateHeaderChain(chain []*types.Header, checkFreq int) (int, error)

type Message added in v0.3.1 

type Message interface {
	From() common.Address
	To() *common.Address

	GasPrice() *big.Int
	GasFeeCap() *big.Int
	GasTipCap() *big.Int
	Gas() uint64
	Value() *big.Int

	Nonce() uint64
	IsFake() bool
	Data() []byte
	AccessList() types.AccessList
}

Message represents a message sent to a contract.

type RelayerMember 

type RelayerMember struct {
	Coinbase  common.Address `json:"coinbase`
	Publickey []byte
}

type StateProcessor added in v0.3.1 

type StateProcessor struct {
	// contains filtered or unexported fields
}

StateProcessor is a basic Processor, which takes care of transitioning state from one point to another.

StateProcessor implements Processor.

func NewStateProcessor added in v0.3.1 

func NewStateProcessor(config *params.ChainConfig, bc *BlockChain, engine consensus.Engine) *StateProcessor

NewStateProcessor initialises a new StateProcessor.

func (*StateProcessor) Process added in v0.3.1 

func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error)

Process processes the state changes according to the Ethereum rules by running the transaction messages using the statedb and applying any rewards to both the processor (coinbase) and any included uncles.

Process returns the receipts and logs accumulated during the process and returns the amount of gas that was used in the process. If any of the transactions failed to execute due to insufficient gas it will return an error.

type StateTransition added in v0.3.1 

type StateTransition struct {
	// contains filtered or unexported fields
}

The State Transitioning Model

A state transition is a change made when a transaction is applied to the current world state The state transitioning model does all the necessary work to work out a valid new state root.

1) Nonce handling 2) Pre pay gas 3) Create a new state object if the recipient is \0*32 4) Value transfer == If contract creation == 

4a) Attempt to run transaction data
4b) If valid, use result as code for the new state object

== end == 5) Run Script section 6) Derive new state root

func NewStateTransition added in v0.3.1 

func NewStateTransition(evm *vm.EVM, msg Message, gp *core.GasPool) *StateTransition

NewStateTransition initialises and returns a new state transition object.

func (*StateTransition) TransitionDb added in v0.3.1 

func (st *StateTransition) TransitionDb() (*ExecutionResult, error)

TransitionDb will transition the state by applying the current message and returning the evm execution result with following fields.

  • used gas: total gas used (including gas being refunded)
  • returndata: the returned data from evm
  • concrete execution error: various **EVM** error which aborts the execution, e.g. ErrOutOfGas, ErrExecutionReverted

However if any consensus issue encountered, return the error directly with nil evm execution result.

type TxPool added in v0.3.1 

type TxPool struct {
	// contains filtered or unexported fields
}

TxPool contains all currently known transactions. Transactions enter the pool when they are received from the network or submitted locally. They exit the pool when they are included in the blockchain.

The pool separates processable transactions (which can be applied to the current state) and future transactions. Transactions move between those two states over time as they are received and processed.

func NewTxPool added in v0.3.1 

func NewTxPool(config TxPoolConfig, chainconfig *params.ChainConfig, chain blockChain) *TxPool

NewTxPool creates a new transaction pool to gather, sort and filter inbound transactions from the network.

func (*TxPool) AddLocal added in v0.3.1 

func (pool *TxPool) AddLocal(tx *types.Transaction) error

AddLocal enqueues a single local transaction into the pool if it is valid. This is a convenience wrapper aroundd AddLocals.

func (*TxPool) AddLocals added in v0.3.1 

func (pool *TxPool) AddLocals(txs []*types.Transaction) []error

AddLocals enqueues a batch of transactions into the pool if they are valid, marking the senders as a local ones, ensuring they go around the local pricing constraints.

This method is used to add transactions from the RPC API and performs synchronous pool reorganization and event propagation.

func (*TxPool) AddRemote deprecated added in v0.3.1 

func (pool *TxPool) AddRemote(tx *types.Transaction) error

AddRemote enqueues a single transaction into the pool if it is valid. This is a convenience wrapper around AddRemotes.

Deprecated: use AddRemotes

func (*TxPool) AddRemotes added in v0.3.1 

func (pool *TxPool) AddRemotes(txs []*types.Transaction) []error

AddRemotes enqueues a batch of transactions into the pool if they are valid. If the senders are not among the locally tracked ones, full pricing constraints will apply.

This method is used to add transactions from the p2p network and does not wait for pool reorganization and internal event propagation.

func (*TxPool) AddRemotesSync added in v0.3.1 

func (pool *TxPool) AddRemotesSync(txs []*types.Transaction) []error

This is like AddRemotes, but waits for pool reorganization. Tests use this method.

func (*TxPool) Content added in v0.3.1 

func (pool *TxPool) Content() (map[common.Address]types.Transactions, map[common.Address]types.Transactions)

Content retrieves the data content of the transaction pool, returning all the pending as well as queued transactions, grouped by account and sorted by nonce.

func (*TxPool) ContentFrom added in v0.3.1 

func (pool *TxPool) ContentFrom(addr common.Address) (types.Transactions, types.Transactions)

ContentFrom retrieves the data content of the transaction pool, returning the pending as well as queued transactions of this address, grouped by nonce.

func (*TxPool) GasPrice added in v0.3.1 

func (pool *TxPool) GasPrice() *big.Int

GasPrice returns the current gas price enforced by the transaction pool.

func (*TxPool) Get added in v0.3.1 

func (pool *TxPool) Get(hash common.Hash) *types.Transaction

Get returns a transaction if it is contained in the pool and nil otherwise.

func (*TxPool) Has added in v0.3.1 

func (pool *TxPool) Has(hash common.Hash) bool

Has returns an indicator whether txpool has a transaction cached with the given hash.

func (*TxPool) Locals added in v0.3.1 

func (pool *TxPool) Locals() []common.Address

Locals retrieves the accounts currently considered local by the pool.

func (*TxPool) Nonce added in v0.3.1 

func (pool *TxPool) Nonce(addr common.Address) uint64

Nonce returns the next nonce of an account, with all transactions executable by the pool already applied on top.

func (*TxPool) Pending added in v0.3.1 

func (pool *TxPool) Pending(enforceTips bool) map[common.Address]types.Transactions

Pending retrieves all currently processable transactions, grouped by origin account and sorted by nonce. The returned transaction set is a copy and can be freely modified by calling code.

The enforceTips parameter can be used to do an extra filtering on the pending transactions and only return those whose **effective** tip is large enough in the next pending execution environment. todo ibft

func (*TxPool) SetGasPrice added in v0.3.1 

func (pool *TxPool) SetGasPrice(price *big.Int)

SetGasPrice updates the minimum price required by the transaction pool for a new transaction, and drops all transactions below this threshold. todo ibft

func (*TxPool) Stats added in v0.3.1 

func (pool *TxPool) Stats() (int, int)

Stats retrieves the current pool stats, namely the number of pending and the number of queued (non-executable) transactions.

func (*TxPool) Status added in v0.3.1 

func (pool *TxPool) Status(hashes []common.Hash) []TxStatus

Status returns the status (unknown/pending/queued) of a batch of transactions identified by their hashes.

func (*TxPool) Stop added in v0.3.1 

func (pool *TxPool) Stop()

Stop terminates the transaction pool.

func (*TxPool) SubscribeNewTxsEvent added in v0.3.1 

func (pool *TxPool) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription

SubscribeNewTxsEvent registers a subscription of NewTxsEvent and starts sending event to the given channel.

type TxPoolConfig added in v0.3.1 

type TxPoolConfig struct {
	Locals    []common.Address // Addresses that should be treated by default as local
	NoLocals  bool             // Whether local transaction handling should be disabled
	Journal   string           // Journal of local transactions to survive node restarts
	Rejournal time.Duration    // Time interval to regenerate the local transaction journal

	PriceLimit uint64 // Minimum gas price to enforce for acceptance into the pool
	PriceBump  uint64 // Minimum price bump percentage to replace an already existing transaction (nonce)

	AccountSlots uint64 // Number of executable transaction slots guaranteed per account
	GlobalSlots  uint64 // Maximum number of executable transaction slots for all accounts
	AccountQueue uint64 // Maximum number of non-executable transaction slots permitted per account
	GlobalQueue  uint64 // Maximum number of non-executable transaction slots for all accounts

	Lifetime time.Duration // Maximum amount of time non-executable transaction are queued
}

TxPoolConfig are the configuration parameters of the transaction pool.

type TxStatus added in v0.3.1 

type TxStatus uint

TxStatus is the current status of a transaction as seen by the pool. 

const (
	TxStatusUnknown TxStatus = iota
	TxStatusQueued
	TxStatusPending
	TxStatusIncluded
)

type UpdateHeadBlocksCallback 

type UpdateHeadBlocksCallback func(ethdb.KeyValueWriter, *types.Header) (uint64, bool)

UpdateHeadBlocksCallback is a callback function that is called by SetHead before head header is updated. The method will return the actual block it updated the head to (missing state) and a flag if setHead should continue rewinding till that forcefully (exceeded ancient limits)

type WriteStatus 

type WriteStatus byte

WriteStatus status of write 

const (
	NonStatTy WriteStatus = iota
	CanonStatTy
	SideStatTy
)

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