core

package
v0.6.0-rc.0 Latest Latest
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 Go to latest Published: May 9, 2023 License: GPL-3.0 Imports: 45 Imported by: 1

Documentation

Overview

Package miner implements Ethereum block creation and mining.

Index

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 (
	// ErrKnownBlock is returned when a block to import is already known locally.
	ErrKnownBlock = errors.New("block already known")

	// ErrBannedHash is returned if a block to import is on the banned list.
	ErrBannedHash = errors.New("banned hash")

	// ErrNoGenesis is returned when there is no Genesis Block.
	ErrNoGenesis = errors.New("genesis not found in chain")

	// ErrSubNotSyncedToDom is returned when the subordinate cannot find the parent of the block which is being appended by the dom.
	ErrSubNotSyncedToDom = errors.New("sub not synced to dom")

	// ErrPendingEtxAlreadyKnown is returned received pending etx already in the cache/db
	ErrPendingEtxAlreadyKnown = errors.New("pending etx already known")

	// ErrBodyNotFound is returned when body data for a given header hash cannot be found.
	ErrBodyNotFound = errors.New("could not find the body data to match the header root hash")

	// ErrDomClientNotUp is returned when block is trying to be appended when domClient is not up.
	ErrDomClientNotUp = errors.New("dom client is not online")

	// ErrBadSubManifest is returned when a block's subordinate manifest does not match the subordinate manifest hash
	ErrBadSubManifest = errors.New("subordinate manifest is incorrect")

	//ErrPendingBlock indicates the block couldn't yet be processed. This is likely due to missing information (ancestor, body, pendingEtxs, etc)
	ErrPendingBlock = errors.New("block cannot be appended yet")

	//ErrPendingEtxNotFound is returned when pendingEtxs cannot be found for a hash given in the submanifest
	ErrPendingEtxNotFound = errors.New("pending etx not found")

	//ErrPendingEtxRollupNotFound is returned when pendingEtxsRollup cannot be found for a hash given in the submanifest
	ErrPendingEtxRollupNotFound = errors.New("pending etx rollup not found")

	//ErrPendingEtxNotValid is returned when pendingEtxs is not valid
	ErrPendingEtxNotValid = errors.New("pending etx not valid")

	//ErrPendingEtxRollupNotValid is returned when pendingEtxsRollup is not valid
	ErrPendingEtxRollupNotValid = errors.New("pending etx rollup not valid")
)
View Source 
var (
	// ErrNonceTooLow is returned if the nonce of a transaction is lower than the
	// one present in the local chain.
	ErrNonceTooLow = errors.New("nonce too low")

	// ErrNonceTooHigh is returned if the nonce of a transaction is higher than the
	// next one expected based on the local chain.
	ErrNonceTooHigh = errors.New("nonce too high")

	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
	// by a transaction is higher than what's left in the block.
	ErrGasLimitReached = errors.New("gas limit reached")

	// ErrInsufficientFundsForTransfer is returned if the transaction sender doesn't
	// have enough funds for transfer(topmost call only).
	ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer")

	// ErrInsufficientFunds is returned if the total cost of executing a transaction
	// is higher than the balance of the user's account.
	ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value")

	// ErrGasUintOverflow is returned when calculating gas usage.
	ErrGasUintOverflow = errors.New("gas uint64 overflow")

	// ErrIntrinsicGas is returned if the transaction is specified to use less gas
	// than required to start the invocation.
	ErrIntrinsicGas = errors.New("intrinsic gas too low")

	// ErrTxTypeNotSupported is returned if a transaction is not supported in the
	// current network configuration.
	ErrTxTypeNotSupported = types.ErrTxTypeNotSupported

	// ErrTipAboveFeeCap is a sanity error to ensure no one is able to specify a
	// transaction with a tip higher than the total fee cap.
	ErrTipAboveFeeCap = errors.New("max priority fee per gas higher than max fee per gas")

	// ErrTipVeryHigh is a sanity error to avoid extremely big numbers specified
	// in the tip field.
	ErrTipVeryHigh = errors.New("max priority fee per gas higher than 2^256-1")

	// ErrFeeCapVeryHigh is a sanity error to avoid extremely big numbers specified
	// in the fee cap field.
	ErrFeeCapVeryHigh = errors.New("max fee per gas higher than 2^256-1")

	// ErrFeeCapTooLow is returned if the transaction fee cap is less than the
	// the base fee of the block.
	ErrFeeCapTooLow = errors.New("max fee per gas less than block base fee")

	// ErrSenderNoEOA is returned if the sender of a transaction is a contract.
	ErrSenderNoEOA = errors.New("sender not an eoa")

	// ErrSenderInoperable is returned if the sender of a transaction is outside of context.
	ErrSenderInoperable = errors.New("sender is in inoperable state")
)

List of evm-call-message pre-checking errors. All state transition messages will be pre-checked before execution. If any invalidation detected, the corresponding error should be returned which is defined here.

- If the pre-checking happens in the miner, then the transaction won't be packed. - If the pre-checking happens in the block processing procedure, then a "BAD BLOCk" error should be emitted.

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")

	// 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 DefaultTxPoolConfig = TxPoolConfig{
	Journal:   "transactions.rlp",
	Rejournal: time.Hour,

	PriceLimit: 1,
	PriceBump:  10,

	AccountSlots: 32,
	GlobalSlots:  9000 + 1024,
	AccountQueue: 640,
	GlobalQueue:  2048,

	Lifetime: 3 * time.Hour,
}

DefaultTxPoolConfig contains the default configurations for the transaction pool.

Functions

func ApplyTransaction 

func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *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 

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 ErrGasLimit 

func ErrGasLimit(txGas uint64, limit uint64) error

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.

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 

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

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func IntrinsicGas 

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

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

func NewEVMBlockContext 

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

NewEVMBlockContext creates a new context for use in the EVM.

func NewEVMTxContext 

func NewEVMTxContext(msg Message) vm.TxContext

NewEVMTxContext creates a new transaction context for a single transaction.

func ReadGenesisAlloc 

func ReadGenesisAlloc(filename string) map[string]GenesisAccount

func ReadKnot 

func ReadKnot(chainfile string) []*types.Block

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 *params.ConfigCompatError and the new, unwritten config is returned.

The returned chain configuration is never nil.

func SetupGenesisBlockWithOverride 

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

func Transfer 

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

Types

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(hc *HeaderChain, 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 

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

BaseFee returns the 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, implicitly changing its associated difficulty. It's useful to test scenarios where forking is not tied to chain length directly.

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) SetDifficulty 

func (b *BlockGen) SetDifficulty(diff *big.Int)

SetDifficulty sets the difficulty field of the generated block. This method is useful for Clique tests where the difficulty does not depend on time. For the blake3pow tests, please use OffsetTime, which implicitly recalculates the diff.

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, headerChain *HeaderChain, 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 BloomIndexer 

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

BloomIndexer implements a core.ChainIndexer, building up a rotated bloom bits index for the Ethereum header bloom filters, permitting blazing fast filtering.

func (*BloomIndexer) Commit 

func (b *BloomIndexer) Commit() error

Commit implements core.ChainIndexerBackend, finalizing the bloom section and writing it out into the database.

func (*BloomIndexer) Process 

func (b *BloomIndexer) Process(ctx context.Context, header *types.Header) error

Process implements core.ChainIndexerBackend, adding a new header's bloom into the index.

func (*BloomIndexer) Prune 

func (b *BloomIndexer) Prune(threshold uint64) error

Prune returns an empty error since we don't support pruning here.

func (*BloomIndexer) Reset 

func (b *BloomIndexer) Reset(ctx context.Context, section uint64, lastSectionHead common.Hash) error

Reset implements core.ChainIndexerBackend, starting a new bloombits index section.

type BodyDb 

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

func NewBodyDb 

func NewBodyDb(db ethdb.Database, engine consensus.Engine, hc *HeaderChain, chainConfig *params.ChainConfig, cacheConfig *CacheConfig, vmConfig vm.Config) (*BodyDb, error)

func (*BodyDb) Append 

func (bc *BodyDb) Append(batch ethdb.Batch, block *types.Block, newInboundEtxs types.Transactions) ([]*types.Log, error)

Append

func (*BodyDb) Config 

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

Config retrieves the chain's fork configuration.

func (*BodyDb) Engine 

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

Engine retreives the BodyDb consensus engine.

func (*BodyDb) GetBlock 

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

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

func (*BodyDb) GetBlockOrCandidate 

func (bc *BodyDb) GetBlockOrCandidate(hash common.Hash, number uint64) *types.Block

GetBlockOrCandidate retrieves any known block from the database by hash and number, caching it if found.

func (*BodyDb) HasBlock 

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

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

func (*BodyDb) HasBlockAndState 

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

func (*BodyDb) Processor 

func (bc *BodyDb) Processor() *StateProcessor

func (*BodyDb) SubscribeBlockProcessingEvent 

func (bc *BodyDb) 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 (*BodyDb) SubscribeChainEvent 

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

SubscribeChainEvent registers a subscription of ChainEvent.

func (*BodyDb) SubscribeChainSideEvent 

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

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*BodyDb) SubscribeLogsEvent 

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

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

func (*BodyDb) SubscribeRemovedLogsEvent 

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

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

func (*BodyDb) WriteBlock 

func (bc *BodyDb) WriteBlock(block *types.Block)

WriteBlock write the block to the bodydb database

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 ChainContext 

type ChainContext interface {
	// Engine retrieves the chain's consensus engine.
	Engine() consensus.Engine

	// GetHeader returns the hash corresponding to their hash.
	GetHeader(common.Hash, uint64) *types.Header
}

ChainContext supports retrieving headers and consensus parameters from the current blockchain to be used during transaction processing.

type ChainEvent 

type ChainEvent struct {
	Block *types.Block
	Hash  common.Hash
	Logs  []*types.Log
}

type ChainHeadEvent 

type ChainHeadEvent struct{ Block *types.Block }

type ChainIndexer 

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

ChainIndexer does a post-processing job for equally sized sections of the canonical chain (like BlooomBits and CHT structures). A ChainIndexer is connected to the blockchain through the event system by starting a ChainHeadEventLoop in a goroutine.

Further child ChainIndexers can be added which use the output of the parent section indexer. These child indexers receive new head notifications only after an entire section has been finished or in case of rollbacks that might affect already finished sections.

func NewBloomIndexer 

func NewBloomIndexer(db ethdb.Database, size, confirms uint64) *ChainIndexer

NewBloomIndexer returns a chain indexer that generates bloom bits data for the canonical chain for fast logs filtering.

func NewChainIndexer 

func NewChainIndexer(chainDb ethdb.Database, indexDb ethdb.Database, backend ChainIndexerBackend, section, confirm uint64, throttling time.Duration, kind string) *ChainIndexer

NewChainIndexer creates a new chain indexer to do background processing on chain segments of a given size after certain number of confirmations passed. The throttling parameter might be used to prevent database thrashing.

func (*ChainIndexer) AddChildIndexer 

func (c *ChainIndexer) AddChildIndexer(indexer *ChainIndexer)

AddChildIndexer adds a child ChainIndexer that can use the output of this one

func (*ChainIndexer) Close 

func (c *ChainIndexer) Close() error

Close tears down all goroutines belonging to the indexer and returns any error that might have occurred internally.

func (*ChainIndexer) Prune 

func (c *ChainIndexer) Prune(threshold uint64) error

Prune deletes all chain data older than given threshold.

func (*ChainIndexer) SectionHead 

func (c *ChainIndexer) SectionHead(section uint64) common.Hash

SectionHead retrieves the last block hash of a processed section from the index database.

func (*ChainIndexer) Sections 

func (c *ChainIndexer) Sections() (uint64, uint64, common.Hash)

Sections returns the number of processed sections maintained by the indexer and also the information about the last header indexed for potential canonical verifications.

func (*ChainIndexer) Start 

func (c *ChainIndexer) Start(chain ChainIndexerChain)

Start creates a goroutine to feed chain head events into the indexer for cascading background processing. Children do not need to be started, they are notified about new events by their parents.

type ChainIndexerBackend 

type ChainIndexerBackend interface {
	// Reset initiates the processing of a new chain segment, potentially terminating
	// any partially completed operations (in case of a reorg).
	Reset(ctx context.Context, section uint64, prevHead common.Hash) error

	// Process crunches through the next header in the chain segment. The caller
	// will ensure a sequential order of headers.
	Process(ctx context.Context, header *types.Header) error

	// Commit finalizes the section metadata and stores it into the database.
	Commit() error

	// Prune deletes the chain index older than the given threshold.
	Prune(threshold uint64) error
}

ChainIndexerBackend defines the methods needed to process chain segments in the background and write the segment results into the database. These can be used to create filter blooms or CHTs.

type ChainIndexerChain 

type ChainIndexerChain interface {
	// CurrentHeader retrieves the latest locally known header.
	CurrentHeader() *types.Header

	// SubscribeChainHeadEvent subscribes to new head header notifications.
	SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription
}

ChainIndexerChain interface is used for connecting the indexer to a blockchain

type ChainSideEvent 

type ChainSideEvent struct {
	Block *types.Block
}

type Config 

type Config struct {
	Etherbase  common.Address `toml:",omitempty"` // Public address for block mining rewards (default = first account)
	Notify     []string       `toml:",omitempty"` // HTTP URL list to be notified of new work packages (only useful in ethash).
	NotifyFull bool           `toml:",omitempty"` // Notify with pending block headers instead of work packages
	ExtraData  hexutil.Bytes  `toml:",omitempty"` // Block extra data set by the miner
	GasFloor   uint64         // Target gas floor for mined blocks.
	GasCeil    uint64         // Target gas ceiling for mined blocks.
	GasPrice   *big.Int       // Minimum gas price for mining a transaction
	Recommit   time.Duration  // The time interval for miner to re-create mining work.
	Noverify   bool           // Disable remote mining solution verification(only useful in ethash).
}

Config is the configuration parameters of mining.

type Core 

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

func NewCore 

func NewCore(db ethdb.Database, config *Config, isLocalBlock func(block *types.Header) bool, txConfig *TxPoolConfig, chainConfig *params.ChainConfig, domClientUrl string, subClientUrls []string, engine consensus.Engine, cacheConfig *CacheConfig, vmConfig vm.Config, genesis *Genesis) (*Core, error)

func (*Core) AddLocal 

func (c *Core) AddLocal(tx *types.Transaction) error

func (*Core) AddPendingEtxs 

func (c *Core) AddPendingEtxs(pEtxs types.PendingEtxs) error

func (*Core) AddPendingEtxsRollup 

func (c *Core) AddPendingEtxsRollup(pEtxsRollup types.PendingEtxsRollup) error

func (*Core) Append 

func (c *Core) Append(header *types.Header, domPendingHeader *types.Header, domTerminus common.Hash, domOrigin bool, newInboundEtxs types.Transactions) (types.Transactions, error)

func (*Core) CalculateBaseFee 

func (c *Core) CalculateBaseFee(header *types.Header) *big.Int

GetGasUsedInChain retrieves all the gas used from a given block backwards until a specific distance is reached.

func (*Core) Config 

func (c *Core) Config() *params.ChainConfig

func (*Core) ConstructLocalMinedBlock 

func (c *Core) ConstructLocalMinedBlock(header *types.Header) (*types.Block, error)

ConstructLocalBlock takes a header and construct the Block locally

func (*Core) Content 

func (c *Core) Content() (map[common.InternalAddress]types.Transactions, map[common.InternalAddress]types.Transactions)

func (*Core) ContentFrom 

func (c *Core) ContentFrom(addr common.Address) (types.Transactions, types.Transactions)

func (*Core) ContractCode 

func (c *Core) 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 (*Core) ContractCodeWithPrefix 

func (c *Core) 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 (*Core) CurrentBlock 

func (c *Core) CurrentBlock() *types.Block

CurrentBlock returns the block for the current header.

func (*Core) CurrentHeader 

func (c *Core) CurrentHeader() *types.Header

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

func (*Core) DisablePreseal 

func (c *Core) DisablePreseal()

DisablePreseal turns off the preseal mining feature. It's necessary for some fake consensus engine which can seal blocks instantaneously. Note this function shouldn't be exposed to API, it's unnecessary for users (miners) to actually know the underlying detail. It's only for outside project which uses this library.

func (*Core) EnablePreseal 

func (c *Core) EnablePreseal()

EnablePreseal turns on the preseal mining feature. It's enabled by default. Note this function shouldn't be exposed to API, it's unnecessary for users (miners) to actually know the underlying detail. It's only for outside project which uses this library.

func (*Core) Engine 

func (c *Core) Engine() consensus.Engine

Engine retreives the blake3 consensus engine.

func (*Core) Export 

func (c *Core) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*Core) ExportN 

func (c *Core) ExportN(w io.Writer, first uint64, last uint64) error

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

func (*Core) Genesis 

func (c *Core) Genesis() *types.Block

Genesis retrieves the chain's genesis block.

func (*Core) Get 

func (c *Core) Get(hash common.Hash) *types.Transaction

func (*Core) GetAncestor 

func (c *Core) 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 (*Core) GetBlock 

func (c *Core) GetBlock(hash common.Hash, number uint64) *types.Block

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

func (*Core) GetBlockByHash 

func (c *Core) GetBlockByHash(hash common.Hash) *types.Block

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

func (*Core) GetBlockByNumber 

func (c *Core) GetBlockByNumber(number uint64) *types.Block

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

func (*Core) GetBlockHashesFromHash 

func (c *Core) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

func (*Core) GetBlockOrCandidateByHash 

func (c *Core) GetBlockOrCandidateByHash(hash common.Hash) *types.Block

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

func (*Core) GetBlocksFromHash 

func (c *Core) GetBlocksFromHash(hash common.Hash, n int) []*types.Block

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

func (*Core) GetBody 

func (c *Core) GetBody(hash common.Hash) *types.Body

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

func (*Core) GetBodyRLP 

func (c *Core) GetBodyRLP(hash common.Hash) rlp.RawValue

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

func (*Core) GetCanonicalHash 

func (c *Core) GetCanonicalHash(number uint64) common.Hash

GetCanonicalHash returns the canonical hash for a given block number

func (*Core) GetGasUsedInChain 

func (c *Core) GetGasUsedInChain(block *types.Block, length int) int64

GetGasUsedInChain retrieves all the gas used from a given block backwards until a specific distance is reached.

func (*Core) GetHeader 

func (c *Core) 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 (*Core) GetHeaderByHash 

func (c *Core) GetHeaderByHash(hash common.Hash) *types.Header

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

func (*Core) GetHeaderByNumber 

func (c *Core) GetHeaderByNumber(number uint64) *types.Header

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

func (*Core) GetHeaderOrCandidate 

func (c *Core) GetHeaderOrCandidate(hash common.Hash, number uint64) *types.Header

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

func (*Core) GetHeaderOrCandidateByHash 

func (c *Core) GetHeaderOrCandidateByHash(hash common.Hash) *types.Header

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

func (*Core) GetManifest 

func (c *Core) GetManifest(blockHash common.Hash) (types.BlockManifest, error)

func (*Core) GetPendingEtxs 

func (c *Core) GetPendingEtxs(hash common.Hash) *types.PendingEtxs

func (*Core) GetPendingEtxsRollup 

func (c *Core) GetPendingEtxsRollup(hash common.Hash) *types.PendingEtxsRollup

func (*Core) GetPendingHeader 

func (c *Core) GetPendingHeader() (*types.Header, error)

func (*Core) GetReceiptsByHash 

func (c *Core) GetReceiptsByHash(hash common.Hash) types.Receipts

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

func (*Core) GetSubManifest 

func (c *Core) GetSubManifest(slice common.Location, blockHash common.Hash) (types.BlockManifest, error)

func (*Core) GetTerminiByHash 

func (c *Core) GetTerminiByHash(hash common.Hash) []common.Hash

GetTerminiByHash retrieves the termini stored for a given header hash

func (*Core) GetTransactionLookup 

func (c *Core) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry

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

func (*Core) GetUnclesInChain 

func (c *Core) GetUnclesInChain(block *types.Block, length int) []*types.Header

GetUnclesInChain retrieves all the uncles from a given block backwards until a specific distance is reached.

func (*Core) GetVMConfig 

func (c *Core) GetVMConfig() *vm.Config

GetVMConfig returns the block chain VM config.

func (*Core) HasBlock 

func (c *Core) HasBlock(hash common.Hash, number uint64) bool

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

func (*Core) HasBlockAndState 

func (c *Core) HasBlockAndState(hash common.Hash, number uint64) bool

func (*Core) HasHeader 

func (c *Core) 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 (*Core) HasPendingEtxs 

func (c *Core) HasPendingEtxs(hash common.Hash) bool

func (*Core) Hashrate 

func (c *Core) Hashrate() uint64

func (*Core) InsertChain 

func (c *Core) InsertChain(blocks types.Blocks) (int, error)

InsertChain attempts to append a list of blocks to the slice, optionally caching any pending blocks which cannot yet be appended. InsertChain return the number of blocks which were successfully consumed (either appended, or cached), and an error.

func (*Core) InsertChainWithoutSealVerification 

func (c *Core) InsertChainWithoutSealVerification(block *types.Block) (int, error)

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

func (*Core) IsMining 

func (c *Core) IsMining() bool

func (*Core) Miner 

func (c *Core) Miner() *Miner

func (*Core) NewGenesisPendigHeader 

func (c *Core) NewGenesisPendigHeader(pendingHeader *types.Header)

func (*Core) Nonce 

func (c *Core) Nonce(addr common.Address) uint64

func (*Core) Pending 

func (c *Core) Pending() (*types.Block, *state.StateDB)

Pending returns the currently pending block and associated state.

func (*Core) PendingBlock 

func (c *Core) PendingBlock() *types.Block

PendingBlock returns the currently pending block.

Note, to access both the pending block and the pending state simultaneously, please use Pending(), as the pending state can change between multiple method calls

func (*Core) PendingBlockAndReceipts 

func (c *Core) PendingBlockAndReceipts() (*types.Block, types.Receipts)

PendingBlockAndReceipts returns the currently pending block and corresponding receipts.

func (*Core) Processor 

func (c *Core) Processor() *StateProcessor

func (*Core) SendPendingEtxsToDom 

func (c *Core) SendPendingEtxsToDom(pEtxs types.PendingEtxs) error

func (*Core) SetEtherbase 

func (c *Core) SetEtherbase(addr common.Address)

func (*Core) SetExtra 

func (c *Core) SetExtra(extra []byte) error

func (*Core) SetGasCeil 

func (c *Core) SetGasCeil(ceil uint64)

SetGasCeil sets the gaslimit to strive for when mining blocks.

func (*Core) SetGasPrice 

func (c *Core) SetGasPrice(price *big.Int)

func (*Core) SetHead 

func (c *Core) SetHead(number uint64) error

this needs to be implemented, it is being used by a lot of modules

func (*Core) SetRecommitInterval 

func (c *Core) SetRecommitInterval(interval time.Duration)

func (*Core) Slice 

func (c *Core) Slice() *Slice

Slice retrieves the slice struct.

func (*Core) Snapshots 

func (c *Core) Snapshots() *snapshot.Tree

Snapshots returns the blockchain snapshot tree.

func (*Core) State 

func (c *Core) State() (*state.StateDB, error)

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

func (*Core) StateAt 

func (c *Core) StateAt(root common.Hash) (*state.StateDB, error)

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

func (*Core) StateAtBlock 

func (c *Core) StateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (statedb *state.StateDB, err error)

func (*Core) StateAtTransaction 

func (c *Core) StateAtTransaction(block *types.Block, txIndex int, reexec uint64) (Message, vm.BlockContext, *state.StateDB, error)

func (*Core) StateCache 

func (c *Core) StateCache() state.Database

StateCache returns the caching database underpinning the blockchain instance.

func (*Core) Stats 

func (c *Core) Stats() (int, int)

func (*Core) Stop 

func (c *Core) Stop()

func (*Core) StopMining 

func (c *Core) StopMining()

func (*Core) SubRelayPendingHeader 

func (c *Core) SubRelayPendingHeader(slPendingHeader types.PendingHeader, location common.Location)

func (*Core) SubscribeBlockProcessingEvent 

func (c *Core) 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 (*Core) SubscribeChainEvent 

func (c *Core) SubscribeChainEvent(ch chan<- ChainEvent) event.Subscription

SubscribeChainEvent registers a subscription of ChainEvent.

func (*Core) SubscribeChainHeadEvent 

func (c *Core) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*Core) SubscribeChainSideEvent 

func (c *Core) SubscribeChainSideEvent(ch chan<- ChainSideEvent) event.Subscription

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*Core) SubscribeLogsEvent 

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

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*Core) SubscribeMissingBody 

func (c *Core) SubscribeMissingBody(ch chan<- *types.Header) event.Subscription

func (*Core) SubscribeMissingParentEvent 

func (c *Core) SubscribeMissingParentEvent(ch chan<- common.Hash) event.Subscription

func (*Core) SubscribeMissingPendingEtxsEvent 

func (c *Core) SubscribeMissingPendingEtxsEvent(ch chan<- common.Hash) event.Subscription

func (*Core) SubscribeMissingPendingEtxsRollupEvent 

func (c *Core) SubscribeMissingPendingEtxsRollupEvent(ch chan<- common.Hash) event.Subscription

func (*Core) SubscribeNewTxsEvent 

func (c *Core) SubscribeNewTxsEvent(ch chan<- NewTxsEvent) event.Subscription

func (*Core) SubscribePendingEtxs 

func (c *Core) SubscribePendingEtxs(ch chan<- types.PendingEtxs) event.Subscription

func (*Core) SubscribePendingEtxsRollup 

func (c *Core) SubscribePendingEtxsRollup(ch chan<- types.PendingEtxsRollup) event.Subscription

func (*Core) SubscribePendingHeader 

func (c *Core) SubscribePendingHeader(ch chan<- *types.Header) event.Subscription

SubscribePendingBlock starts delivering the pending block to the given channel.

func (*Core) SubscribePendingLogs 

func (c *Core) SubscribePendingLogs(ch chan<- []*types.Log) event.Subscription

SubscribePendingLogs starts delivering logs from pending transactions to the given channel.

func (*Core) SubscribeRemovedLogsEvent 

func (c *Core) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*Core) TrieNode 

func (c *Core) TrieNode(hash common.Hash) ([]byte, error)

func (*Core) TxLookupLimit 

func (c *Core) TxLookupLimit() uint64

func (*Core) TxPool 

func (c *Core) TxPool() *TxPool

func (*Core) TxPoolPending 

func (c *Core) TxPoolPending(enforceTips bool) (map[common.AddressBytes]types.Transactions, error)

func (*Core) WriteBlock 

func (c *Core) WriteBlock(block *types.Block)

WriteBlock write the block to the bodydb database

type ExecutionResult 

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)
	Etxs       []*types.Transaction // External transactions generated from opETX
}

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

func ApplyMessage 

func ApplyMessage(evm *vm.EVM, msg Message, gp *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 

func (result *ExecutionResult) Failed() bool

Failed returns the indicator whether the execution is successful or not

func (*ExecutionResult) Return 

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 

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 

func (result *ExecutionResult) Unwrap() error

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

type GasPool 

type GasPool uint64

GasPool tracks the amount of gas available during execution of the transactions in a block. The zero value is a pool with zero gas available.

func (*GasPool) AddGas 

func (gp *GasPool) AddGas(amount uint64) *GasPool

AddGas makes gas available for execution.

func (*GasPool) Gas 

func (gp *GasPool) Gas() uint64

Gas returns the amount of gas remaining in the pool.

func (*GasPool) String 

func (gp *GasPool) String() string

func (*GasPool) SubGas 

func (gp *GasPool) SubGas(amount uint64) error

SubGas deducts the given amount from the pool if enough gas is available and returns an error otherwise.

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"`
	Difficulty *big.Int            `json:"difficulty" gencodec:"required"`
	Mixhash    common.Hash         `json:"mixHash"`
	Coinbase   common.Address      `json:"coinbase"`

	// 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 DefaultColosseumGenesisBlock 

func DefaultColosseumGenesisBlock() *Genesis

DefaultColosseumGenesisBlock returns the Quai Colosseum testnet genesis block.

func DefaultGalenaGenesisBlock 

func DefaultGalenaGenesisBlock() *Genesis

DefaultGalenaGenesisBlock returns the Galena testnet genesis block.

func DefaultGardenGenesisBlock 

func DefaultGardenGenesisBlock() *Genesis

DefaultGardenGenesisBlock returns the Garden testnet genesis block.

func DefaultGenesisBlock 

func DefaultGenesisBlock() *Genesis

DefaultGenesisBlock returns the Latest default Genesis block. Currently it returns the DefaultColosseumGenesisBlock.

func DefaultLocalGenesisBlock 

func DefaultLocalGenesisBlock() *Genesis

DefaultLocalGenesisBlock returns the Local testnet genesis block.

func DefaultOrchardGenesisBlock 

func DefaultOrchardGenesisBlock() *Genesis

DefaultOrchardGenesisBlock returns the Orchard testnet genesis block.

func DeveloperGenesisBlock 

func DeveloperGenesisBlock(period uint64, faucet common.Address) *Genesis

DeveloperGenesisBlock 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) 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
}

func NewHeaderChain 

func NewHeaderChain(db ethdb.Database, engine consensus.Engine, chainConfig *params.ChainConfig, cacheConfig *CacheConfig, vmConfig vm.Config) (*HeaderChain, error)

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

func (*HeaderChain) AddPendingEtxs 

func (hc *HeaderChain) AddPendingEtxs(pEtxs types.PendingEtxs) error

func (*HeaderChain) Append 

func (hc *HeaderChain) Append(batch ethdb.Batch, block *types.Block, newInboundEtxs types.Transactions) error

Append

func (*HeaderChain) CalculateBaseFee 

func (hc *HeaderChain) CalculateBaseFee(header *types.Header) *big.Int

GetGasUsedInChain retrieves all the gas used from a given block backwards until a specific distance is reached.

func (*HeaderChain) CheckContext 

func (hc *HeaderChain) CheckContext(context int) error

CheckContext checks to make sure the range of a context or order is valid

func (*HeaderChain) CheckLocationRange 

func (hc *HeaderChain) CheckLocationRange(location []byte) error

CheckLocationRange checks to make sure the range of r and z are valid

func (*HeaderChain) CollectBlockManifest 

func (hc *HeaderChain) CollectBlockManifest(h *types.Header) (types.BlockManifest, error)

CollectBlockManifest gathers the manifest of ancestor block hashes since the last coincident block.

func (*HeaderChain) CollectEtxRollup 

func (hc *HeaderChain) CollectEtxRollup(b *types.Block) (types.Transactions, error)

Collect all emmitted ETXs since the last coincident block, but excluding those emitted in this block

func (*HeaderChain) CollectSubRollup 

func (hc *HeaderChain) CollectSubRollup(b *types.Block) (types.Transactions, error)

CollectSubRollup collects the rollup of ETXs emitted from the subordinate chain in the slice which emitted the given block.

func (*HeaderChain) Config 

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

Config retrieves the header chain's chain configuration.

func (*HeaderChain) CurrentBlock 

func (hc *HeaderChain) CurrentBlock() *types.Block

CurrentBlock returns the block for the current header.

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) Empty 

func (hc *HeaderChain) Empty() bool

Empty checks if the headerchain is empty.

func (*HeaderChain) Engine 

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

Engine reterives the consensus engine.

func (*HeaderChain) Export 

func (hc *HeaderChain) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*HeaderChain) ExportN 

func (hc *HeaderChain) ExportN(w io.Writer, first uint64, last uint64) error

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

func (*HeaderChain) GasLimit 

func (hc *HeaderChain) GasLimit() uint64

GasLimit returns the gas limit of the current HEAD block.

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) GetBlockByHash 

func (hc *HeaderChain) GetBlockByHash(hash common.Hash) *types.Block

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

func (*HeaderChain) GetBlockByNumber 

func (hc *HeaderChain) GetBlockByNumber(number uint64) *types.Block

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

func (*HeaderChain) GetBlockFromCacheOrDb 

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

GetBlockFromCacheOrDb looks up the body cache first and then checks the db

func (*HeaderChain) GetBlockHashesFromHash 

func (hc *HeaderChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

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) GetBlockOrCandidateByHash 

func (hc *HeaderChain) GetBlockOrCandidateByHash(hash common.Hash) *types.Block

GetBlockOrCandidateByHash retrieves any block from the database by hash, caching it if found.

func (*HeaderChain) GetBlocksFromHash 

func (hc *HeaderChain) 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 (*HeaderChain) GetBody 

func (hc *HeaderChain) GetBody(hash common.Hash) *types.Body

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

func (*HeaderChain) GetBodyRLP 

func (hc *HeaderChain) GetBodyRLP(hash common.Hash) rlp.RawValue

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

func (*HeaderChain) GetCanonicalHash 

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

func (*HeaderChain) GetGasUsedInChain 

func (hc *HeaderChain) GetGasUsedInChain(block *types.Block, length int) int64

GetGasUsedInChain retrieves all the gas used from a given block backwards until a specific distance is reached.

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) GetHeaderOrCandidate 

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

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

func (*HeaderChain) GetHeaderOrCandidateByHash 

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

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

func (*HeaderChain) GetPendingEtxs 

func (hc *HeaderChain) GetPendingEtxs(hash common.Hash) (types.Transactions, error)

GetPendingEtxs gets the pendingEtxs form the

func (*HeaderChain) GetPendingEtxsRollup 

func (hc *HeaderChain) GetPendingEtxsRollup(hash common.Hash) (types.BlockManifest, error)

func (*HeaderChain) GetTerminiByHash 

func (hc *HeaderChain) GetTerminiByHash(hash common.Hash) []common.Hash

func (*HeaderChain) GetUnclesInChain 

func (hc *HeaderChain) GetUnclesInChain(block *types.Block, length int) []*types.Header

GetUnclesInChain retrieves all the uncles from a given block backwards until a specific distance is reached.

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) SetCurrentHeader 

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

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) StateAt 

func (hc *HeaderChain) StateAt(root common.Hash) (*state.StateDB, error)

func (*HeaderChain) Stop 

func (hc *HeaderChain) Stop()

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

func (*HeaderChain) SubscribeChainHeadEvent 

func (hc *HeaderChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*HeaderChain) SubscribeChainSideEvent 

func (hc *HeaderChain) SubscribeChainSideEvent(ch chan<- ChainSideEvent) event.Subscription

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*HeaderChain) SubscribeMissingPendingEtxsEvent 

func (hc *HeaderChain) SubscribeMissingPendingEtxsEvent(ch chan<- common.Hash) event.Subscription

func (*HeaderChain) SubscribeMissingPendingEtxsRollupEvent 

func (hc *HeaderChain) SubscribeMissingPendingEtxsRollupEvent(ch chan<- common.Hash) event.Subscription

func (*HeaderChain) WriteBlock 

func (hc *HeaderChain) WriteBlock(block *types.Block)

type Message 

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
	CheckNonce() bool
	Data() []byte
	AccessList() types.AccessList
	ETXSender() common.Address
	Type() byte

	ETXGasLimit() uint64
	ETXGasPrice() *big.Int
	ETXGasTip() *big.Int
	ETXData() []byte
	ETXAccessList() types.AccessList
}

Message represents a message sent to a contract.

type Miner 

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

Miner creates blocks and searches for proof-of-work values.

func New 

func New(hc *HeaderChain, txPool *TxPool, config *Config, db ethdb.Database, chainConfig *params.ChainConfig, engine consensus.Engine, isLocalBlock func(block *types.Header) bool) *Miner

func (*Miner) DisablePreseal 

func (miner *Miner) DisablePreseal()

DisablePreseal turns off the preseal mining feature. It's necessary for some fake consensus engine which can seal blocks instantaneously. Note this function shouldn't be exposed to API, it's unnecessary for users (miners) to actually know the underlying detail. It's only for outside project which uses this library.

func (*Miner) EnablePreseal 

func (miner *Miner) EnablePreseal()

EnablePreseal turns on the preseal mining feature. It's enabled by default. Note this function shouldn't be exposed to API, it's unnecessary for users (miners) to actually know the underlying detail. It's only for outside project which uses this library.

func (*Miner) Hashrate 

func (miner *Miner) Hashrate() uint64

func (*Miner) MakeExtraData 

func (miner *Miner) MakeExtraData(extra []byte) []byte

func (*Miner) Mining 

func (miner *Miner) Mining() bool

func (*Miner) Pending 

func (miner *Miner) Pending() (*types.Block, *state.StateDB)

Pending returns the currently pending block and associated state.

func (*Miner) PendingBlock 

func (miner *Miner) PendingBlock() *types.Block

PendingBlock returns the currently pending block.

Note, to access both the pending block and the pending state simultaneously, please use Pending(), as the pending state can change between multiple method calls

func (*Miner) PendingBlockAndReceipts 

func (miner *Miner) PendingBlockAndReceipts() (*types.Block, types.Receipts)

PendingBlockAndReceipts returns the currently pending block and corresponding receipts.

func (*Miner) SetEtherbase 

func (miner *Miner) SetEtherbase(addr common.Address)

func (*Miner) SetExtra 

func (miner *Miner) SetExtra(extra []byte) error

func (*Miner) SetGasCeil 

func (miner *Miner) SetGasCeil(ceil uint64)

SetGasCeil sets the gaslimit to strive for when mining blocks.

func (*Miner) SetRecommitInterval 

func (miner *Miner) SetRecommitInterval(interval time.Duration)

SetRecommitInterval sets the interval for sealing work resubmitting.

func (*Miner) Start 

func (miner *Miner) Start(coinbase common.Address)

func (*Miner) Stop 

func (miner *Miner) Stop()

func (*Miner) StopMining 

func (miner *Miner) StopMining()

func (*Miner) SubscribePendingHeader 

func (miner *Miner) SubscribePendingHeader(ch chan<- *types.Header) event.Subscription

SubscribePendingBlock starts delivering the pending block to the given channel.

func (*Miner) SubscribePendingLogs 

func (miner *Miner) SubscribePendingLogs(ch chan<- []*types.Log) event.Subscription

SubscribePendingLogs starts delivering logs from pending transactions to the given channel.

type NewMinedBlockEvent 

type NewMinedBlockEvent struct{ Block *types.Block }

NewMinedBlockEvent is posted when a block has been imported.

type NewTxsEvent 

type NewTxsEvent struct{ Txs []*types.Transaction }

NewTxsEvent is posted when a batch of transactions enter the transaction pool.

type Prefetcher 

type Prefetcher interface {
	// Prefetch processes the state changes according to the Ethereum rules by running
	// the transaction messages using the statedb, but any changes are discarded. The
	// only goal is to pre-cache transaction signatures and state trie nodes.
	Prefetch(block *types.Block, statedb *state.StateDB, cfg vm.Config, interrupt *uint32)
}

Prefetcher is an interface for pre-caching transaction signatures and state.

type Processor 

type Processor interface {
	// 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(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error)
	Apply(block *types.Block) error
}

Processor is an interface for processing blocks using a given initial state.

type RemovedLogsEvent 

type RemovedLogsEvent struct{ Logs []*types.Log }

RemovedLogsEvent is posted when a reorg happens

type Slice 

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

func NewSlice 

func NewSlice(db ethdb.Database, config *Config, txConfig *TxPoolConfig, isLocalBlock func(block *types.Header) bool, chainConfig *params.ChainConfig, domClientUrl string, subClientUrls []string, engine consensus.Engine, cacheConfig *CacheConfig, vmConfig vm.Config, genesis *Genesis) (*Slice, error)

func (*Slice) AddPendingEtxs 

func (sl *Slice) AddPendingEtxs(pEtxs types.PendingEtxs) error

func (*Slice) AddPendingEtxsRollup 

func (sl *Slice) AddPendingEtxsRollup(pEtxsRollup types.PendingEtxsRollup) error

func (*Slice) Append 

func (sl *Slice) Append(header *types.Header, domPendingHeader *types.Header, domTerminus common.Hash, domOrigin bool, newInboundEtxs types.Transactions) (types.Transactions, error)

Append takes a proposed header and constructs a local block and attempts to hierarchically append it to the block graph. If this is called from a dominant context a domTerminus must be provided else a common.Hash{} should be used and domOrigin should be set to true.

func (*Slice) CollectNewlyConfirmedEtxs 

func (sl *Slice) CollectNewlyConfirmedEtxs(block *types.Block, location common.Location) (types.Transactions, types.Transactions, error)

CollectNewlyConfirmedEtxs collects all newly confirmed ETXs since the last coincident with the given location

func (*Slice) Config 

func (sl *Slice) Config() *params.ChainConfig

func (*Slice) ConstructLocalBlock 

func (sl *Slice) ConstructLocalBlock(header *types.Header) (*types.Block, error)

constructLocalBlock takes a header and construct the Block locally by getting the body from the candidate body db. This method is used when peers give the block as a placeholder for the body.

func (*Slice) ConstructLocalMinedBlock 

func (sl *Slice) ConstructLocalMinedBlock(header *types.Header) (*types.Block, error)

constructLocalMinedBlock takes a header and construct the Block locally by getting the block body from the workers pendingBlockBodyCache. This method is used when the miner sends in the header.

func (*Slice) CurrentInfo 

func (sl *Slice) CurrentInfo(header *types.Header) bool

func (*Slice) Engine 

func (sl *Slice) Engine() consensus.Engine

func (*Slice) GetManifest 

func (sl *Slice) GetManifest(blockHash common.Hash) (types.BlockManifest, error)

GetManifest gathers the manifest of ancestor block hashes since the last coincident block.

func (*Slice) GetPendingBlockBody 

func (sl *Slice) GetPendingBlockBody(header *types.Header) *types.Body

func (*Slice) GetPendingHeader 

func (sl *Slice) GetPendingHeader() (*types.Header, error)

GetPendingHeader is used by the miner to request the current pending header

func (*Slice) GetSubManifest 

func (sl *Slice) GetSubManifest(slice common.Location, blockHash common.Hash) (types.BlockManifest, error)

GetSubManifest gets the block manifest from the subordinate node which produced this block

func (*Slice) HeaderChain 

func (sl *Slice) HeaderChain() *HeaderChain

func (*Slice) Miner 

func (sl *Slice) Miner() *Miner

func (*Slice) NewGenesisPendingHeader 

func (sl *Slice) NewGenesisPendingHeader(domPendingHeader *types.Header)

NewGenesisPendingHeader creates a pending header on the genesis block

func (*Slice) SendPendingEtxsToDom 

func (sl *Slice) SendPendingEtxsToDom(pEtxs types.PendingEtxs) error

SendPendingEtxsToDom shares a set of pending ETXs with your dom, so he can reference them when a coincident block is found

func (*Slice) Stop 

func (sl *Slice) Stop()

Stop stores the phCache and the sl.pendingHeader hash value to the db.

func (*Slice) SubRelayPendingHeader 

func (sl *Slice) SubRelayPendingHeader(pendingHeader types.PendingHeader, location common.Location)

SubRelayPendingHeader takes a pending header from the sender (ie dominant), updates the phCache with a composited header and relays result to subordinates

func (*Slice) SubscribeMissingBody 

func (sl *Slice) SubscribeMissingBody(ch chan<- *types.Header) event.Subscription

func (*Slice) SubscribeMissingParentEvent 

func (sl *Slice) SubscribeMissingParentEvent(ch chan<- common.Hash) event.Subscription

func (*Slice) SubscribePendingEtxs 

func (sl *Slice) SubscribePendingEtxs(ch chan<- types.PendingEtxs) event.Subscription

func (*Slice) SubscribePendingEtxsRollup 

func (sl *Slice) SubscribePendingEtxsRollup(ch chan<- types.PendingEtxsRollup) event.Subscription

func (*Slice) TxPool 

func (sl *Slice) TxPool() *TxPool

func (*Slice) WriteBlock 

func (sl *Slice) WriteBlock(block *types.Block)

type StateProcessor 

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 

func NewStateProcessor(config *params.ChainConfig, hc *HeaderChain, engine consensus.Engine, vmConfig vm.Config, cacheConfig *CacheConfig) *StateProcessor

NewStateProcessor initialises a new StateProcessor.

func (*StateProcessor) Apply 

func (p *StateProcessor) Apply(batch ethdb.Batch, block *types.Block, newInboundEtxs types.Transactions) ([]*types.Log, error)

Apply State

func (*StateProcessor) ContractCode 

func (p *StateProcessor) 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 (*StateProcessor) ContractCodeWithPrefix 

func (p *StateProcessor) 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 (*StateProcessor) GetReceiptsByHash 

func (p *StateProcessor) GetReceiptsByHash(hash common.Hash) types.Receipts

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

func (*StateProcessor) GetTransactionLookup 

func (p *StateProcessor) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry

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

func (*StateProcessor) GetVMConfig 

func (p *StateProcessor) GetVMConfig() *vm.Config

GetVMConfig returns the block chain VM config.

func (*StateProcessor) HasBlockAndState 

func (p *StateProcessor) 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 (*StateProcessor) HasState 

func (p *StateProcessor) HasState(hash common.Hash) bool

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

func (*StateProcessor) Process 

func (p *StateProcessor) Process(block *types.Block, etxSet types.EtxSet) (types.Receipts, []*types.Log, *state.StateDB, 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.

func (*StateProcessor) State 

func (p *StateProcessor) State() (*state.StateDB, error)

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

func (*StateProcessor) StateAt 

func (p *StateProcessor) StateAt(root common.Hash) (*state.StateDB, error)

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

func (*StateProcessor) StateAtBlock 

func (p *StateProcessor) StateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool) (statedb *state.StateDB, err error)

StateAtBlock retrieves the state database associated with a certain block. If no state is locally available for the given block, a number of blocks are attempted to be reexecuted to generate the desired state. The optional base layer statedb can be passed then it's regarded as the statedb of the parent block. Parameters:

  • block: The block for which we want the state (== state at the stateRoot of the parent)
  • reexec: The maximum number of blocks to reprocess trying to obtain the desired state
  • base: If the caller is tracing multiple blocks, the caller can provide the parent state continuously from the callsite.
  • checklive: if true, then the live 'blockchain' state database is used. If the caller want to perform Commit or other 'save-to-disk' changes, this should be set to false to avoid storing trash persistently

func (*StateProcessor) StateAtTransaction 

func (p *StateProcessor) StateAtTransaction(block *types.Block, txIndex int, reexec uint64) (Message, vm.BlockContext, *state.StateDB, error)

stateAtTransaction returns the execution environment of a certain transaction.

func (*StateProcessor) StateCache 

func (p *StateProcessor) StateCache() state.Database

StateCache returns the caching database underpinning the blockchain instance.

func (*StateProcessor) TrieNode 

func (p *StateProcessor) TrieNode(hash common.Hash) ([]byte, error)

either from ephemeral in-memory cache, or from persistent storage.

type StateTransition 

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 

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

NewStateTransition initialises and returns a new state transition object.

func (*StateTransition) TransitionDb 

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 

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 

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 

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 

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 

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 

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 

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

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

func (*TxPool) Content 

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

func (pool *TxPool) ContentFrom(addr common.InternalAddress) (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 

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

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

func (*TxPool) Get 

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 

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 

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

Locals retrieves the accounts currently considered local by the pool.

func (*TxPool) Nonce 

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

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

func (*TxPool) SetGasPrice 

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.

func (*TxPool) Stats 

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 

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 

func (pool *TxPool) Stop()

Stop terminates the transaction pool.

func (*TxPool) SubscribeNewTxsEvent 

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

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

func (*TxPool) TxPoolPending 

func (pool *TxPool) TxPoolPending(enforceTips bool, etxSet types.EtxSet) (map[common.AddressBytes]types.Transactions, error)

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.

type TxPoolConfig 

type TxPoolConfig struct {
	Locals    []common.InternalAddress // 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 

type TxStatus uint

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

const (
	TxStatusUnknown TxStatus = iota
	TxStatusQueued
	TxStatusPending
	TxStatusIncluded
)

type Validator 

type Validator interface {
	// ValidateBody validates the given block's content.
	ValidateBody(block *types.Block) error

	// ValidateState validates the given statedb and optionally the receipts and
	// gas used.
	ValidateState(block *types.Block, state *state.StateDB, receipts types.Receipts, usedGas uint64) error
}

Validator is an interface which defines the standard for block validation. It is only responsible for validating block contents, as the header validation is done by the specific consensus engines.

Source Files

View all Source files

Directories

Path Synopsis
Provides support for dealing with EVM assembly instructions (e.g., disassembling them).
 Provides support for dealing with EVM assembly instructions (e.g., disassembling them).
Package bloombits implements bloom filtering on batches of data.
 Package bloombits implements bloom filtering on batches of data.
Package forkid implements EIP-2124 (https://eips.ethereum.org/EIPS/eip-2124).
 Package forkid implements EIP-2124 (https://eips.ethereum.org/EIPS/eip-2124).
Package rawdb contains a collection of low level database accessors.
 Package rawdb contains a collection of low level database accessors.
Package state provides a caching layer atop the Ethereum state trie.
 Package state provides a caching layer atop the Ethereum state trie.
pruner
snapshot
Package snapshot implements a journalled, dynamic state dump.
 Package snapshot implements a journalled, dynamic state dump.
Package types contains data types related to Ethereum consensus.
 Package types contains data types related to Ethereum consensus.
vm
Package vm implements the Ethereum Virtual Machine.
 Package vm implements the Ethereum Virtual Machine.
runtime
Package runtime provides a basic execution model for executing EVM code.
 Package runtime provides a basic execution model for executing EVM code.

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