core

package
v0.0.0-...-215623d Latest Latest
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 Go to latest Published: May 20, 2021 License: GPL-3.0 Imports: 47 Imported by: 0

Documentation

Overview

Package core implements the Ethereum consensus protocol.

Index

Constants

View Source 
const MainnetNotCheckedFrom uint64 = 12470400

MainnetNotCheckedFrom is the first block number not yet checked for invalid jumps

View Source 
const (
	TriesInMemory = 128
)

Variables

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

	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
	ErrBlacklistedHash = errors.New("blacklisted hash")

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

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

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")

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

	PriceLimit: 1,
	PriceBump:  10,

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

	Lifetime: 3 * time.Hour,
}

DefaultTxPoolConfig contains the default configurations for the transaction pool.

View Source 
var ErrGenesisNoConfig = errors.New("genesis has no chain configuration")
View Source 
var GenerateTrace bool

Functions

func ApplyTransaction 

func ApplyTransaction(config *params.ChainConfig, getHeader func(hash common.Hash, number uint64) *types.Header, engine consensus.Engine, author *common.Address, gp *GasPool, ibs *state.IntraBlockState, stateWriter state.StateWriter, 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(parentGasUsed, parentGasLimit, gasFloor, gasCeil uint64) uint64

CalcGasLimit computes the gas limit of the next block after parent. It aims to keep the baseline gas above the provided floor, and increase it towards the ceil if the blocks are full. If the ceil is exceeded, it will always decrease the gas allowance.

func CanTransfer 

func CanTransfer(db vm.IntraBlockState, addr common.Address, amount *uint256.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 ExecuteBlockEphemerally 

func ExecuteBlockEphemerally(
	chainConfig *params.ChainConfig,
	vmConfig *vm.Config,
	getHeader func(hash common.Hash, number uint64) *types.Header,
	engine consensus.Engine,
	block *types.Block,
	stateReader state.StateReader,
	stateWriter state.WriterWithChangeSets,
) (types.Receipts, error)

ExecuteBlockEphemerally runs a block from provided stateReader and writes the result to the provided stateWriter

func FinalizeBlockExecution 

func FinalizeBlockExecution(engine consensus.Engine, header *types.Header, txs types.Transactions, uncles []*types.Header, stateWriter state.WriterWithChangeSets, cc *params.ChainConfig, ibs *state.IntraBlockState) error

func GenerateChain 

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

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 GenesisWithAccounts 

func GenesisWithAccounts(db ethdb.Database, accs []GenAccount) *types.Block

func GetHashFn 

func GetHashFn(ref *types.Header, getHeader func(hash common.Hash, number uint64) *types.Header) func(n uint64) common.Hash

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func InsertBodies 

func InsertBodies(
	logPrefix string,
	ctx context.Context,
	chain types.Blocks,
	db ethdb.Database,
	newCanonical bool,
) (bool, error)

InsertBodies is insertChain with execute=false and ommission of blockchain object

func InsertBodyChain 

func InsertBodyChain(logPrefix string, ctx context.Context, db ethdb.Database, chain types.Blocks, newCanonical bool) (bool, error)

InsertBodyChain attempts to insert the given batch of block into the canonical chain, without executing those blocks

func IntrinsicGas 

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 

func NewEVMBlockContext(header *types.Header, getHeader func(hash common.Hash, number uint64) *types.Header, engine consensus.Engine, author *common.Address) vm.BlockContext

NewEVMBlockContext creates a new context for use in the EVM.

func NewEVMContextByHeader 

func NewEVMContextByHeader(msg Message, header *types.Header, hashGetter func(n uint64) common.Hash) vm.BlockContext

func NewEVMTxContext 

func NewEVMTxContext(msg Message) vm.TxContext

NewEVMTxContext creates a new transaction context for a single transaction.

func SetupGenesisBlock 

func SetupGenesisBlock(db ethdb.Database, genesis *Genesis, history bool, overwrite bool) (*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, overrideLondon *big.Int, history bool, overwrite bool) (*params.ChainConfig, common.Hash, error)

func SkipAnalysis 

func SkipAnalysis(config *params.ChainConfig, blockNumber uint64) bool

SkipAnalysis function tells us whether we can skip performing jumpdest analysis for the historical blocks (on mainnet now but perhaps on the testsnets in the future), because we have verified that there were only a few blocks where codeBitmap was useful. Invalid jumps either did not occur, or were prevented simply by checking whether the jump destination has JUMPDEST opcode Mainnet transactions that use jumpdest analysis are: 0x88a1f2a9f048a21fd944b28ad9962f533ab5d3c40e17b1bc3f99ae999a4021b2 (block 6426432) 0x86e55d1818b5355424975de9633a57c40789ca08552297b726333a9433949c92 (block 6426298) 0x3666640316df11865abd1352f4c0b4c5126f8ac1d858ef2a0c6e744a4865bca2 (block 5800596) 0xcdb5bf0b4b51093e1c994f471921f88623c9d3e1b6aa2782049f53a0048f2b32 (block 11079912)

func Transfer 

func Transfer(db vm.IntraBlockState, sender, recipient common.Address, amount *uint256.Int, bailout bool)

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

Types

type ApiBackend 

type ApiBackend interface {
	Etherbase(ctx context.Context) (common.Address, error)
	NetVersion(ctx context.Context) (uint64, error)
	ProtocolVersion(ctx context.Context) (uint64, error)
	ClientVersion(ctx context.Context) (string, error)
	Subscribe(ctx context.Context, cb func(*remote.SubscribeReply)) error
}

ApiBackend - interface which must be used by API layer implementation can work with local Ethereum object or with Remote (grpc-based) one this is reason why all methods are accepting context and returning error

type BlockChain 

type BlockChain struct {
	Chainmu sync.RWMutex // blockchain insertion lock

	TerminateInsert func(common.Hash, uint64) bool // Testing hook used to terminate ancient receipt chain insertion.
	// 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, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(block *types.Block) bool, senderCacher *TxSenderCacher) (*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) ChainDb 

func (bc *BlockChain) ChainDb() ethdb.Database

func (*BlockChain) Config 

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

Config retrieves the chain's fork configuration.

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) 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) EnablePreimages 

func (bc *BlockChain) EnablePreimages(ep bool)

func (*BlockChain) EnableReceipts 

func (bc *BlockChain) EnableReceipts(er bool)

func (*BlockChain) EnableTxLookupIndex 

func (bc *BlockChain) EnableTxLookupIndex(et bool)

func (*BlockChain) Engine 

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

Engine retrieves the blockchain's consensus engine.

func (*BlockChain) Genesis 

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

Genesis retrieves the chain's genesis block.

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) GetBlockHashesFromHash 

func (bc *BlockChain) 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 (*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) GetVMConfig 

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

GetVMConfig returns the block chain VM config.

func (*BlockChain) ReportBlock 

func (bc *BlockChain) ReportBlock(block *types.Block, receipts types.Receipts, err error)

reportBlock logs a bad block error.

func (*BlockChain) SetEngine 

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

func (*BlockChain) SetResolveReads 

func (bc *BlockChain) SetResolveReads(rr bool)

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) 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<- ChainEvent) event.Subscription

SubscribeChainEvent registers a subscription of ChainEvent.

func (*BlockChain) SubscribeChainHeadEvent 

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

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*BlockChain) SubscribeChainSideEvent 

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

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

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(getHeader func(hash common.Hash, number uint64) *types.Header, engine consensus.Engine, 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) GetHeader 

func (b *BlockGen) GetHeader() *types.Header

func (*BlockGen) GetParent 

func (b *BlockGen) GetParent() *types.Block

func (*BlockGen) GetReceipts 

func (b *BlockGen) GetReceipts() []*types.Receipt

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 ethash 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 ChainEvent 

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

type ChainHeadEvent 

type ChainHeadEvent struct{ Block *types.Block }

type ChainSideEvent 

type ChainSideEvent struct {
	Block *types.Block
}

type DeleteBlockContentCallback 

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

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

type EthBackend 

type EthBackend interface {
	Etherbase() (common.Address, error)
	NetVersion() (uint64, error)
	IsMining() bool
}

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)
}

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, refunds bool, gasBailout bool) (*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. `refunds` is false when it is not required to apply gas refunds `gasBailout` is true when it is not required to fail transaction if the balance is not enough to pay gas. for trace_call to replicate OE/Pariry behaviour

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 FakeChainReader 

type FakeChainReader struct {
	Cfg *params.ChainConfig
	// contains filtered or unexported fields
}

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

func (*FakeChainReader) HasBlock 

func (cr *FakeChainReader) HasBlock(hash common.Hash, number uint64) bool

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 GenAccount 

type GenAccount struct {
	Addr    common.Address
	Balance *big.Int
}

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"`
	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"`
}

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

func DefaultBaikalGenesisBlock 

func DefaultBaikalGenesisBlock() *Genesis

func DefaultGenesisBlock 

func DefaultGenesisBlock() *Genesis

DefaultGenesisBlock returns the Ethereum main net genesis block.

func DefaultGoerliGenesisBlock 

func DefaultGoerliGenesisBlock() *Genesis

DefaultGoerliGenesisBlock returns the Görli network genesis block.

func DefaultRinkebyGenesisBlock 

func DefaultRinkebyGenesisBlock() *Genesis

DefaultRinkebyGenesisBlock returns the Rinkeby network genesis block.

func DefaultRopstenGenesisBlock 

func DefaultRopstenGenesisBlock() *Genesis

DefaultRopstenGenesisBlock returns the Ropsten network genesis block.

func DefaultTurboMineGenesisBlock 

func DefaultTurboMineGenesisBlock() *Genesis

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, history bool) (*types.Block, *state.IntraBlockState, error)

func (Genesis) MarshalJSON 

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

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() (*types.Block, *state.IntraBlockState, error)

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

func (*Genesis) Write 

func (g *Genesis) Write(tx ethdb.RwTx, history bool) (*types.Block, *state.IntraBlockState, 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) WriteGenesisState 

func (g *Genesis) WriteGenesisState(tx ethdb.RwTx, history bool) (*types.Block, *state.IntraBlockState, error)

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)

func (*GenesisAccount) UnmarshalJSON 

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

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) (*HeaderChain, error)

NewHeaderChain creates a new HeaderChain structure.

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.

func (*HeaderChain) Engine 

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

Engine retrieves the header chain's consensus engine.

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) 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(dbr ethdb.Database, 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) SetCurrentHeader 

func (hc *HeaderChain) SetCurrentHeader(dbw ethdb.Putter, head *types.Header)

SetCurrentHeader sets the current head header of the canonical chain.

func (*HeaderChain) SetEngine 

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

type InsertStats 

type InsertStats struct {
	UsedGas   uint64
	Processed int
	StartTime mclock.AbsTime
	// contains filtered or unexported fields
}

InsertStats tracks and reports on block insertion.

func (*InsertStats) NeedToCommit 

func (st *InsertStats) NeedToCommit(chain []*types.Block, index int) bool

func (*InsertStats) Report 

func (st *InsertStats) Report(logPrefix string, chain []*types.Block, index int, toCommit bool)

report prints statistics if some number of blocks have been processed or more than a few seconds have passed since the last message.

type Message 

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

	GasPrice() *uint256.Int
	FeeCap() *uint256.Int
	Tip() *uint256.Int
	Gas() uint64
	Value() *uint256.Int

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

Message represents a message sent to a contract.

type NewTxsEvent 

type NewTxsEvent struct{ Txs []types.Transaction }

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

type Pruner 

type Pruner interface {
	Start() error
	Stop()
}

type RemoteBackend 

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

func NewRemoteBackend 

func NewRemoteBackend(cc grpc.ClientConnInterface) *RemoteBackend

func (*RemoteBackend) ClientVersion 

func (back *RemoteBackend) ClientVersion(ctx context.Context) (string, error)

func (*RemoteBackend) Etherbase 

func (back *RemoteBackend) Etherbase(ctx context.Context) (common.Address, error)

func (*RemoteBackend) NetVersion 

func (back *RemoteBackend) NetVersion(ctx context.Context) (uint64, error)

func (*RemoteBackend) ProtocolVersion 

func (back *RemoteBackend) ProtocolVersion(ctx context.Context) (uint64, error)

func (*RemoteBackend) Subscribe 

func (back *RemoteBackend) Subscribe(ctx context.Context, onNewEvent func(*remote.SubscribeReply)) error

type RemovedLogsEvent 

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

RemovedLogsEvent is posted when a reorg happens

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(refunds bool, gasBailout bool) (*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 StructLogRes 

type StructLogRes struct {
	Pc      uint64             `json:"pc"`
	Op      string             `json:"op"`
	Gas     uint64             `json:"gas"`
	GasCost uint64             `json:"gasCost"`
	Depth   int                `json:"depth"`
	Error   error              `json:"error,omitempty"`
	Stack   *[]string          `json:"stack,omitempty"`
	Memory  *[]string          `json:"memory,omitempty"`
	Storage *map[string]string `json:"storage,omitempty"`
}

StructLogRes stores a structured log emitted by the EVM while replaying a transaction in debug mode

func FormatLogs 

func FormatLogs(logs []vm.StructLog) []StructLogRes

FormatLogs formats EVM returned structured logs for json output

type TxPool 

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

Backend 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, chaindb ethdb.Database, senderCacher *TxSenderCacher) *TxPool

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

func (*TxPool) AddInit 

func (pool *TxPool) AddInit(fns ...func() error)

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) AddStop 

func (pool *TxPool) AddStop(fns ...func() error)

func (*TxPool) Content 

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) GasPrice 

func (pool *TxPool) GasPrice() *uint256.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) IsStarted 

func (pool *TxPool) IsStarted() bool

func (*TxPool) Locals 

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

Locals retrieves the accounts currently considered local by the pool.

func (*TxPool) Nonce 

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 

func (pool *TxPool) Pending() (types.TransactionsGroupedBySender, 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.

func (*TxPool) RemoveTx 

func (pool *TxPool) RemoveTx(hash common.Hash, outofbound bool)

removeTx removes a single transaction from the queue, moving all subsequent transactions back to the future queue.

func (*TxPool) ResetHead 

func (pool *TxPool) ResetHead(blockGasLimit uint64, blockNumber uint64)

func (*TxPool) RunInit 

func (pool *TxPool) RunInit() error

func (*TxPool) RunStop 

func (pool *TxPool) RunStop() error

func (*TxPool) SetGasPrice 

func (pool *TxPool) SetGasPrice(price *uint256.Int)

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

func (*TxPool) Start 

func (pool *TxPool) Start(gasLimit uint64, headNumber uint64) error

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.

type TxPoolConfig 

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
	StartOnInit bool
}

TxPoolConfig are the configuration parameters of the transaction pool.

type TxSenderCacher 

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

TxSenderCacher is a helper structure to concurrently ecrecover transaction senders from digital signatures on background threads.

func NewTxSenderCacher 

func NewTxSenderCacher(threads int) *TxSenderCacher

newTxSenderCacher creates a new transaction sender background cacher and starts as many processing goroutines as allowed by the GOMAXPROCS on construction.

func (*TxSenderCacher) Close 

func (cacher *TxSenderCacher) Close()

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 UpdateHeadBlocksCallback 

type UpdateHeadBlocksCallback func(ethdb.Database, *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)

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 state provides a caching layer atop the Ethereum state trie.
 Package state provides a caching layer atop the Ethereum state trie.
contracts
Package types contains data types related to Ethereum consensus.
 Package types contains data types related to Ethereum consensus.
accounts
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.
stack

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