go-ethereum: github.com/axiomzen/go-ethereum/core Index | Examples | Files | Directories

package core

import "github.com/axiomzen/go-ethereum/core"

Package core implements the Ethereum consensus protocol.

Index

Examples

Package Files

block_validator.go blockchain.go blockchain_insert.go blocks.go chain_indexer.go chain_makers.go error.go events.go evm.go gaspool.go gen_genesis.go gen_genesis_account.go genesis.go genesis_alloc.go headerchain.go state_prefetcher.go state_processor.go state_transition.go tx_cacher.go tx_journal.go tx_list.go tx_pool.go types.go

Constants

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
    BlockChainVersion uint64 = 7
)

Variables

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

    // 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")

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

    // 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")

    // ErrNoGenesis is returned when there is no Genesis Block.
    ErrNoGenesis = errors.New("genesis not found in chain")
)
var (
    // ErrInvalidSender is returned if the transaction contains an invalid signature.
    ErrInvalidSender = errors.New("invalid sender")

    // 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")

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

    // 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")

    // 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")

    // 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")

    // 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 noone 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")
)
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)

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.

func ApplyMessage Uses

func ApplyMessage(evm *vm.EVM, msg Message, gp *GasPool) ([]byte, uint64, bool, 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 ApplyTransaction Uses

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, uint64, 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 Uses

func CalcGasLimit(parent *types.Block, 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 Uses

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

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

func GenerateChain Uses

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.

Code:

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

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

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

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

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

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

Output:

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

func GenesisBlockForTesting Uses

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 Uses

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

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func IntrinsicGas Uses

func IntrinsicGas(data []byte, contractCreation, homestead bool) (uint64, error)

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

func NewEVMContext Uses

func NewEVMContext(msg Message, header *types.Header, chain ChainContext, author *common.Address) vm.Context

NewEVMContext creates a new context for use in the EVM.

func SetupGenesisBlock Uses

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 Uses

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

func Transfer Uses

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

type BlockChain Uses

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

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

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

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

func NewBlockChain Uses

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

func (bc *BlockChain) BadBlocks() []*types.Block

BadBlocks returns a list of the last 'bad blocks' that the client has seen on the network

func (*BlockChain) Config Uses

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

Config retrieves the blockchain's chain configuration.

func (*BlockChain) CurrentBlock Uses

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

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

func (*BlockChain) CurrentFastBlock Uses

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

CurrentFastBlock retrieves the current fast-sync head block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*BlockChain) CurrentHeader Uses

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

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

func (*BlockChain) Engine Uses

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

Engine retrieves the blockchain's consensus engine.

func (*BlockChain) Export Uses

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

Export writes the active chain to the given writer.

func (*BlockChain) ExportN Uses

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

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

func (*BlockChain) FastSyncCommitHead Uses

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

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

func (*BlockChain) GasLimit Uses

func (bc *BlockChain) GasLimit() uint64

GasLimit returns the gas limit of the current HEAD block.

func (*BlockChain) Genesis Uses

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

Genesis retrieves the chain's genesis block.

func (*BlockChain) GetAncestor Uses

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

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*BlockChain) GetBlock Uses

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 Uses

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 Uses

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 Uses

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) GetBlocksFromHash Uses

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

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

func (*BlockChain) GetBody Uses

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

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

func (*BlockChain) GetBodyRLP Uses

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

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

func (*BlockChain) GetHeader Uses

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 Uses

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 Uses

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 Uses

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

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

func (*BlockChain) GetTd Uses

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

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

func (*BlockChain) GetTdByHash Uses

func (bc *BlockChain) GetTdByHash(hash common.Hash) *big.Int

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

func (*BlockChain) GetUnclesInChain Uses

func (bc *BlockChain) 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 (*BlockChain) GetVMConfig Uses

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

GetVMConfig returns the block chain VM config.

func (*BlockChain) HasBlock Uses

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

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

func (*BlockChain) HasBlockAndState Uses

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

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

func (*BlockChain) HasFastBlock Uses

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

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

func (*BlockChain) HasHeader Uses

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

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

func (*BlockChain) HasState Uses

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

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

func (*BlockChain) InsertChain Uses

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

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

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

func (*BlockChain) InsertHeaderChain Uses

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

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

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

func (*BlockChain) InsertReceiptChain Uses

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

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

func (*BlockChain) PostChainEvents Uses

func (bc *BlockChain) PostChainEvents(events []interface{}, logs []*types.Log)

PostChainEvents iterates over the events generated by a chain insertion and posts them into the event feed. TODO: Should not expose PostChainEvents. The chain events should be posted in WriteBlock.

func (*BlockChain) Processor Uses

func (bc *BlockChain) Processor() Processor

Processor returns the current processor.

func (*BlockChain) Reset Uses

func (bc *BlockChain) Reset() error

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

func (*BlockChain) ResetWithGenesisBlock Uses

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

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

func (*BlockChain) Rollback Uses

func (bc *BlockChain) Rollback(chain []common.Hash)

Rollback is designed to remove a chain of links from the database that aren't certain enough to be valid.

func (*BlockChain) SetHead Uses

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

SetHead rewinds the local chain to a new head. In the case of headers, everything above the new head will be deleted and the new one set. In the case of blocks though, the head may be further rewound if block bodies are missing (non-archive nodes after a fast sync).

func (*BlockChain) State Uses

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

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

func (*BlockChain) StateAt Uses

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

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

func (*BlockChain) StateCache Uses

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

StateCache returns the caching database underpinning the blockchain instance.

func (*BlockChain) Stop Uses

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 Uses

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 Uses

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

SubscribeChainEvent registers a subscription of ChainEvent.

func (*BlockChain) SubscribeChainHeadEvent Uses

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

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*BlockChain) SubscribeChainSideEvent Uses

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

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*BlockChain) SubscribeLogsEvent Uses

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

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

func (*BlockChain) SubscribeRemovedLogsEvent Uses

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

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

func (*BlockChain) TrieNode Uses

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

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

func (*BlockChain) Validator Uses

func (bc *BlockChain) Validator() Validator

Validator returns the current validator.

func (*BlockChain) WriteBlockWithState Uses

func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.Receipt, state *state.StateDB) (status WriteStatus, err error)

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

type BlockGen Uses

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

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

func (*BlockGen) AddTx Uses

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 Uses

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

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

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

func (*BlockGen) AddUncheckedReceipt Uses

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 Uses

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 Uses

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

AddUncle adds an uncle header to the generated block.

func (*BlockGen) Number Uses

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

Number returns the block number of the block being generated.

func (*BlockGen) OffsetTime Uses

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 Uses

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 Uses

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 Uses

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 Uses

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

SetExtra sets the extra data field of the generated block.

func (*BlockGen) SetNonce Uses

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

SetNonce sets the nonce field of the generated block.

func (*BlockGen) TxNonce Uses

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 Uses

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

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

BlockValidator implements Validator.

func NewBlockValidator Uses

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

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

func (*BlockValidator) ValidateBody Uses

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 Uses

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

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

type CacheConfig Uses

type CacheConfig struct {
    TrieCleanLimit      int           // Memory allowance (MB) to use for caching trie nodes in memory
    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
}

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

type ChainContext Uses

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 Uses

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

type ChainHeadEvent Uses

type ChainHeadEvent struct{ Block *types.Block }

type ChainIndexer Uses

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 NewChainIndexer Uses

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) AddCheckpoint Uses

func (c *ChainIndexer) AddCheckpoint(section uint64, shead common.Hash)

AddCheckpoint adds a checkpoint. Sections are never processed and the chain is not expected to be available before this point. The indexer assumes that the backend has sufficient information available to process subsequent sections.

Note: knownSections == 0 and storedSections == checkpointSections until syncing reaches the checkpoint

func (*ChainIndexer) AddChildIndexer Uses

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

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

func (*ChainIndexer) Close Uses

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) SectionHead Uses

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 Uses

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 Uses

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 Uses

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
}

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 Uses

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 Uses

type ChainSideEvent struct {
    Block *types.Block
}

type DeleteBlockContentCallback Uses

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

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

type GasPool Uses

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 Uses

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

AddGas makes gas available for execution.

func (*GasPool) Gas Uses

func (gp *GasPool) Gas() uint64

Gas returns the amount of gas remaining in the pool.

func (*GasPool) String Uses

func (gp *GasPool) String() string

func (*GasPool) SubGas Uses

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 Uses

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 DefaultGenesisBlock Uses

func DefaultGenesisBlock() *Genesis

DefaultGenesisBlock returns the Ethereum main net genesis block.

func DefaultGoerliGenesisBlock Uses

func DefaultGoerliGenesisBlock() *Genesis

DefaultGoerliGenesisBlock returns the Görli network genesis block.

func DefaultRinkebyGenesisBlock Uses

func DefaultRinkebyGenesisBlock() *Genesis

DefaultRinkebyGenesisBlock returns the Rinkeby network genesis block.

func DefaultTestnetGenesisBlock Uses

func DefaultTestnetGenesisBlock() *Genesis

DefaultTestnetGenesisBlock returns the Ropsten network genesis block.

func DeveloperGenesisBlock Uses

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

DeveloperGenesisBlock returns the 'geth --dev' genesis block. Note, this must be seeded with the

func (*Genesis) Commit Uses

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 Uses

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

func (*Genesis) MustCommit Uses

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 Uses

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 Uses

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

type GenesisAccount Uses

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 Uses

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

func (*GenesisAccount) UnmarshalJSON Uses

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

type GenesisAlloc Uses

type GenesisAlloc map[common.Address]GenesisAccount

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

func (*GenesisAlloc) UnmarshalJSON Uses

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

type GenesisMismatchError Uses

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 Uses

func (e *GenesisMismatchError) Error() string

type HeaderChain Uses

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

func NewHeaderChain Uses

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

NewHeaderChain creates a new HeaderChain structure.

getValidator should return the parent's validator
procInterrupt points to the parent's interrupt semaphore
wg points to the parent's shutdown wait group

func (*HeaderChain) Config Uses

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

Config retrieves the header chain's chain configuration.

func (*HeaderChain) CurrentHeader Uses

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

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

func (*HeaderChain) Engine Uses

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

Engine retrieves the header chain's consensus engine.

func (*HeaderChain) GetAncestor Uses

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 Uses

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 Uses

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 Uses

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) GetHeader Uses

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 Uses

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 Uses

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

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

func (*HeaderChain) GetTd Uses

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

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

func (*HeaderChain) GetTdByHash Uses

func (hc *HeaderChain) GetTdByHash(hash common.Hash) *big.Int

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

func (*HeaderChain) HasHeader Uses

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

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

func (*HeaderChain) InsertHeaderChain Uses

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

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

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

func (*HeaderChain) SetCurrentHeader Uses

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

SetCurrentHeader sets the current head header of the canonical chain.

func (*HeaderChain) SetGenesis Uses

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

SetGenesis sets a new genesis block header for the chain

func (*HeaderChain) SetHead Uses

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

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

func (*HeaderChain) ValidateHeaderChain Uses

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

func (*HeaderChain) WriteHeader Uses

func (hc *HeaderChain) WriteHeader(header *types.Header) (status WriteStatus, err error)

WriteHeader writes a header into the local chain, given that its parent is already known. If the total difficulty of the newly inserted header becomes greater than the current known TD, the canonical chain is re-routed.

Note: This method is not concurrent-safe with inserting blocks simultaneously into the chain, as side effects caused by reorganisations cannot be emulated without the real blocks. Hence, writing headers directly should only be done in two scenarios: pure-header mode of operation (light clients), or properly separated header/block phases (non-archive clients).

func (*HeaderChain) WriteTd Uses

func (hc *HeaderChain) WriteTd(hash common.Hash, number uint64, td *big.Int) error

WriteTd stores a block's total difficulty into the database, also caching it along the way.

type Message Uses

type Message interface {
    From() common.Address
    //FromFrontier() (common.Address, error)
    To() *common.Address

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

    Nonce() uint64
    CheckNonce() bool
    Data() []byte
}

Message represents a message sent to a contract.

type NewMinedBlockEvent Uses

type NewMinedBlockEvent struct{ Block *types.Block }

NewMinedBlockEvent is posted when a block has been imported.

type NewTxsEvent Uses

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

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

type PendingLogsEvent Uses

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

PendingLogsEvent is posted pre mining and notifies of pending logs.

type Prefetcher Uses

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 Uses

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)
}

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

type RemovedLogsEvent Uses

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

RemovedLogsEvent is posted when a reorg happens

type StateProcessor Uses

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 Uses

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

NewStateProcessor initialises a new StateProcessor.

func (*StateProcessor) Process Uses

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

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

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

type StateTransition Uses

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 Uses

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

NewStateTransition initialises and returns a new state transition object.

func (*StateTransition) TransitionDb Uses

func (st *StateTransition) TransitionDb() (ret []byte, usedGas uint64, failed bool, err error)

TransitionDb will transition the state by applying the current message and returning the result including the used gas. It returns an error if failed. An error indicates a consensus issue.

type TxPool Uses

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 Uses

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 Uses

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 Uses

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 Uses

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 Uses

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) Content Uses

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 Uses

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

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

func (*TxPool) Get Uses

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) Locals Uses

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

Locals retrieves the accounts currently considered local by the pool.

func (*TxPool) Pending Uses

func (pool *TxPool) Pending() (map[common.Address]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.

func (*TxPool) SetGasPrice Uses

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) State Uses

func (pool *TxPool) State() *state.ManagedState

State returns the virtual managed state of the transaction pool.

func (*TxPool) Stats Uses

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 Uses

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 Uses

func (pool *TxPool) Stop()

Stop terminates the transaction pool.

func (*TxPool) SubscribeNewTxsEvent Uses

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 Uses

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

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

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

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

TxPoolConfig are the configuration parameters of the transaction pool.

type TxStatus Uses

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 Uses

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

UpdateHeadBlocksCallback is a callback function that is called by SetHead before head header is updated.

type Validator Uses

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.

type WhCallback Uses

type WhCallback func(*types.Header) error

WhCallback is a callback function for inserting individual headers. A callback is used for two reasons: first, in a LightChain, status should be processed and light chain events sent, while in a BlockChain this is not necessary since chain events are sent after inserting blocks. Second, the header writes should be protected by the parent chain mutex individually.

type WriteStatus Uses

type WriteStatus byte

WriteStatus status of write

const (
    NonStatTy WriteStatus = iota
    CanonStatTy
    SideStatTy
)

Directories

PathSynopsis
asmProvides support for dealing with EVM assembly instructions (e.g., disassembling them).
bloombitsPackage bloombits implements bloom filtering on batches of data.
statePackage state provides a caching layer atop the Ethereum state trie.
typesPackage types contains data types related to Ethereum consensus.
vmPackage vm implements the Ethereum Virtual Machine.
vm/runtimePackage runtime provides a basic execution model for executing EVM code.

Package core imports 40 packages (graph). Updated 2019-07-06. Refresh now. Tools for package owners.