core

package
v1.1.2 Latest Latest
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 Go to latest Published: Sep 2, 2015 License: GPL-3.0 Imports: 34 Imported by: 0

Documentation ¶

Overview ¶

Package core implements the Ethereum consensus protocol.

Index ¶

Examples ¶

Constants ¶

View Source 
const (
	NonStatTy writeStatus = iota
	CanonStatTy
	SplitStatTy
	SideStatTy
)
View Source 
const (
	// must be bumped when consensus algorithm is changed, this forces the upgradedb
	// command to be run (forces the blocks to be imported again using the new algorithm)
	BlockChainVersion = 3
)

Variables ¶

View Source 
var (
	BlockNumberErr   = errors.New("block number invalid")
	BlockFutureErr   = errors.New("block time is in the future")
	BlockTSTooBigErr = errors.New("block time too big")
	BlockEqualTSErr  = errors.New("block time stamp equal to previous")
)
View Source 
var (
	// Transaction Pool Errors
	ErrInvalidSender      = errors.New("Invalid sender")
	ErrNonce              = errors.New("Nonce too low")
	ErrCheap              = errors.New("Gas price too low for acceptance")
	ErrBalance            = errors.New("Insufficient balance")
	ErrNonExistentAccount = errors.New("Account does not exist or account balance too low")
	ErrInsufficientFunds  = errors.New("Insufficient funds for gas * price + value")
	ErrIntrinsicGas       = errors.New("Intrinsic gas too low")
	ErrGasLimit           = errors.New("Exceeds block gas limit")
	ErrNegativeValue      = errors.New("Negative value")
)
View Source 
var BadHashes = map[common.Hash]bool{
	common.HexToHash("05bef30ef572270f654746da22639a7a0c97dd97a7050b9e252391996aaeb689"): true,
}

Set of manually tracked bad hashes (usually hard forks)

View Source 
var BlockReward *big.Int = big.NewInt(5e+18)
View Source 
var DisableBadBlockReporting = true

DisabledBadBlockReporting can be set to prevent blocks being reported.

View Source 
var (
	ErrNoGenesis = errors.New("Genesis not found in chain")
)
View Source 
var (
	ExpDiffPeriod = big.NewInt(100000)
)

Functions ¶

func AccumulateRewards ¶ 

func AccumulateRewards(statedb *state.StateDB, header *types.Header, uncles []*types.Header)

AccumulateRewards credits the coinbase of the given block with the mining reward. The total reward consists of the static block reward and rewards for included uncles. The coinbase of each uncle block is also rewarded.

func ApplyMessage ¶ 

func ApplyMessage(env vm.Environment, msg Message, gp GasPool) ([]byte, *big.Int, error)

func CalcDifficulty ¶ 

func CalcDifficulty(time, parentTime uint64, parentNumber, parentDiff *big.Int) *big.Int

CalcDifficulty is the difficulty adjustment algorithm. It returns the difficulty that a new block b should have when created at time given the parent block's time and difficulty.

func CalcGasLimit ¶ 

func CalcGasLimit(parent *types.Block) *big.Int

CalcGasLimit computes the gas limit of the next block after parent. The result may be modified by the caller. This is miner strategy, not consensus protocol.

func CalcTD ¶ 

func CalcTD(block, parent *types.Block) *big.Int

CalcTD computes the total difficulty of block.

func Canary ¶ 

func Canary(statedb *state.StateDB) bool

Canary will check the 0'd address of the 4 contracts above. If two or more are set to anything other than a 0 the canary dies a horrible death.

func Disassemble ¶ 

func Disassemble(script []byte) (asm []string)

func GenerateChain ¶ 

func GenerateChain(parent *types.Block, db common.Database, n int, gen func(int, *BlockGen)) []*types.Block

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 ChainManager requires use of FakePow or a similar non-validating proof of work implementation.

Example ¶ 
params.MinGasLimit = big.NewInt(125000)      // Minimum the gas limit may ever be.
params.GenesisGasLimit = big.NewInt(3141592) // Gas limit of the Genesis block.

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, _   = ethdb.NewMemDatabase()
)

// Ensure that key1 has some funds in the genesis block.
genesis := WriteGenesisBlockForTesting(db, addr1, big.NewInt(1000000))

// 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.
chain := GenerateChain(genesis, db, 5, func(i int, gen *BlockGen) {
	switch i {
	case 0:
		// In block 1, addr1 sends addr2 some ether.
		tx, _ := types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(10000), params.TxGas, nil, nil).SignECDSA(key1)
		gen.AddTx(tx)
	case 1:
		// In block 2, addr1 sends some more ether to addr2.
		// addr2 passes it on to addr3.
		tx1, _ := types.NewTransaction(gen.TxNonce(addr1), addr2, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(key1)
		tx2, _ := types.NewTransaction(gen.TxNonce(addr2), addr3, big.NewInt(1000), params.TxGas, nil, nil).SignECDSA(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.
evmux := &event.TypeMux{}
chainman, _ := NewChainManager(db, FakePow{}, evmux)
chainman.SetProcessor(NewBlockProcessor(db, FakePow{}, chainman, evmux))
if i, err := chainman.InsertChain(chain); err != nil {
	fmt.Printf("insert error (block %d): %v\n", i, err)
	return
}

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

Output:

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

func GenesisBlockForTesting ¶ 

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

GenesisBlockForTesting creates a block in which addr has the given wei balance. The state trie of the block is written to db.

func GetBlockByHash ¶ 

func GetBlockByHash(db common.Database, hash common.Hash) *types.Block

GetBlockByHash returns the block corresponding to the hash or nil if not found

func GetBlockByNumber ¶ 

func GetBlockByNumber(db common.Database, number uint64) *types.Block

GetBlockByHash returns the canonical block by number or nil if not found

func GetBlockReceipts ¶ 

func GetBlockReceipts(db common.Database, hash common.Hash) types.Receipts

GetBlockReceipts returns the receipts generated by the transactions included in block's given hash.

func GetReceipt ¶ 

func GetReceipt(db common.Database, txHash common.Hash) *types.Receipt

GetReceipt returns a receipt by hash

func IntrinsicGas ¶ 

func IntrinsicGas(data []byte) *big.Int

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

func IsBlockNonceErr ¶ 

func IsBlockNonceErr(err error) bool

IsBlockNonceErr returns true for invalid block nonce errors.

func IsInvalidTxErr ¶ 

func IsInvalidTxErr(err error) bool

func IsKnownBlockErr ¶ 

func IsKnownBlockErr(e error) bool

func IsNonceErr ¶ 

func IsNonceErr(err error) bool

func IsParentErr ¶ 

func IsParentErr(err error) bool

func IsTDError ¶ 

func IsTDError(e error) bool

func IsUncleErr ¶ 

func IsUncleErr(err error) bool

func IsValidationErr ¶ 

func IsValidationErr(err error) bool

func IsValueTransferErr ¶ 

func IsValueTransferErr(e error) bool

func MessageCreatesContract ¶ 

func MessageCreatesContract(msg Message) bool

func NewDefaultGenesisReader ¶ added in v1.0.1 

func NewDefaultGenesisReader() (io.Reader, error)

func ParentError ¶ 

func ParentError(hash common.Hash) error

func PutBlockReceipts ¶ 

func PutBlockReceipts(db common.Database, block *types.Block, receipts types.Receipts) error

PutBlockReceipts stores the block's transactions associated receipts and stores them by block hash in a single slice. This is required for forks and chain reorgs

func PutReceipts ¶ 

func PutReceipts(db common.Database, receipts types.Receipts) error

PutReceipts stores the receipts in the current database

func PutTransactions ¶ 

func PutTransactions(db common.Database, block *types.Block, txs types.Transactions)

PutTransactions stores the transactions in the given database

func ReportBlock ¶ 

func ReportBlock(block *types.Block, err error)

ReportBlock reports the block to the block reporting tool found at badblocks.ethdev.com

func UncleError ¶ 

func UncleError(format string, v ...interface{}) error

func ValidateHeader ¶ 

func ValidateHeader(pow pow.PoW, block *types.Header, parent *types.Block, checkPow, uncle bool) error

See YP section 4.3.4. "Block Header Validity" Validates a block. Returns an error if the block is invalid.

func WriteBlock ¶ 

func WriteBlock(db common.Database, block *types.Block) error

WriteBlock writes a block to the database

func WriteCanonNumber ¶ added in v1.0.0 

func WriteCanonNumber(db common.Database, block *types.Block) error

WriteCanonNumber writes the canonical hash for the given block

func WriteGenesisBlock ¶ 

func WriteGenesisBlock(chainDb common.Database, reader io.Reader) (*types.Block, error)

WriteGenesisBlock writes the genesis block to the database as block number 0

func WriteGenesisBlockForTesting ¶ 

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

func WriteHead ¶ 

func WriteHead(db common.Database, block *types.Block) error

WriteHead force writes the current head

func WriteTestNetGenesisBlock ¶ 

func WriteTestNetGenesisBlock(chainDb common.Database, nonce uint64) (*types.Block, error)

Types ¶

type AccountChange ¶ 

type AccountChange struct {
	Address, StateAddress []byte
}

type Backend ¶ 

type Backend interface {
	AccountManager() *accounts.Manager
	BlockProcessor() *BlockProcessor
	ChainManager() *ChainManager
	TxPool() *TxPool
	ChainDb() common.Database
	DappDb() common.Database
	EventMux() *event.TypeMux
}

TODO move this to types?

type BlockCache ¶ 

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

BlockCache implements a caching mechanism specifically for blocks and uses FILO to pop

func NewBlockCache ¶ 

func NewBlockCache(size int) *BlockCache

Creates and returns a `BlockCache` with `size`. If `size` is smaller than 1 it will panic

func (*BlockCache) Clear ¶ 

func (bc *BlockCache) Clear()

func (*BlockCache) Delete ¶ 

func (bc *BlockCache) Delete(hash common.Hash)

func (*BlockCache) Each ¶ 

func (bc *BlockCache) Each(cb func(int, *types.Block))

func (*BlockCache) Get ¶ 

func (bc *BlockCache) Get(hash common.Hash) *types.Block

func (*BlockCache) Has ¶ 

func (bc *BlockCache) Has(hash common.Hash) bool

func (*BlockCache) Push ¶ 

func (bc *BlockCache) Push(block *types.Block)

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) AddUncle ¶ 

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

AddUncle adds an uncle header to the generated block.

func (*BlockGen) PrevBlock ¶ 

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

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

func (*BlockGen) SetCoinbase ¶ 

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

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

func (*BlockGen) SetExtra ¶ 

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

SetExtra sets the extra data field of the generated block.

func (*BlockGen) 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 BlockNonceErr ¶ 

type BlockNonceErr struct {
	Number *big.Int
	Hash   common.Hash
	Nonce  uint64
}

BlockNonceErr indicates that a block's nonce is invalid.

func (*BlockNonceErr) Error ¶ 

func (err *BlockNonceErr) Error() string

type BlockProcessor ¶ 

type BlockProcessor struct {

	// Proof of work used for validating
	Pow pow.PoW
	// contains filtered or unexported fields
}

func NewBlockProcessor ¶ 

func NewBlockProcessor(db common.Database, pow pow.PoW, chainManager *ChainManager, eventMux *event.TypeMux) *BlockProcessor

func (*BlockProcessor) ApplyTransaction ¶ 

func (self *BlockProcessor) ApplyTransaction(gp GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error)

func (*BlockProcessor) ApplyTransactions ¶ 

func (self *BlockProcessor) ApplyTransactions(gp GasPool, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error)

func (*BlockProcessor) ChainManager ¶ 

func (self *BlockProcessor) ChainManager() *ChainManager

func (*BlockProcessor) GetBlockReceipts ¶ 

func (sm *BlockProcessor) GetBlockReceipts(bhash common.Hash) types.Receipts

GetBlockReceipts returns the receipts beloniging to the block hash

func (*BlockProcessor) GetLogs ¶ 

func (sm *BlockProcessor) GetLogs(block *types.Block) (logs state.Logs, err error)

GetLogs returns the logs of the given block. This method is using a two step approach where it tries to get it from the (updated) method which gets them from the receipts or the depricated way by re-processing the block.

func (*BlockProcessor) Process ¶ 

func (sm *BlockProcessor) Process(block *types.Block) (logs state.Logs, receipts types.Receipts, err error)

Process block will attempt to process the given block's transactions and applies them on top of the block's parent state (given it exists) and will return wether it was successful or not.

func (*BlockProcessor) RetryProcess ¶ 

func (sm *BlockProcessor) RetryProcess(block *types.Block) (logs state.Logs, err error)

func (*BlockProcessor) TransitionState ¶ 

func (sm *BlockProcessor) TransitionState(statedb *state.StateDB, parent, block *types.Block, transientProcess bool) (receipts types.Receipts, err error)

func (*BlockProcessor) VerifyUncles ¶ 

func (sm *BlockProcessor) VerifyUncles(statedb *state.StateDB, block, parent *types.Block) error

type ChainEvent ¶ 

type ChainEvent struct {
	Block *types.Block
	Hash  common.Hash
	Logs  state.Logs
}

type ChainHeadEvent ¶ 

type ChainHeadEvent struct{ Block *types.Block }

type ChainManager ¶ 

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

func NewChainManager ¶ 

func NewChainManager(chainDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error)

func (*ChainManager) CurrentBlock ¶ 

func (self *ChainManager) CurrentBlock() *types.Block

func (*ChainManager) Export ¶ 

func (self *ChainManager) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*ChainManager) ExportN ¶ 

func (self *ChainManager) ExportN(w io.Writer, first uint64, last uint64) error

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

func (*ChainManager) GasLimit ¶ 

func (self *ChainManager) GasLimit() *big.Int

func (*ChainManager) Genesis ¶ 

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

Accessors

func (*ChainManager) GetBlock ¶ 

func (self *ChainManager) GetBlock(hash common.Hash) *types.Block

func (*ChainManager) GetBlockByNumber ¶ 

func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block

func (*ChainManager) GetBlockHashesFromHash ¶ 

func (self *ChainManager) GetBlockHashesFromHash(hash common.Hash, max uint64) (chain []common.Hash)

func (*ChainManager) GetBlocksFromHash ¶ 

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

GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors.

func (*ChainManager) GetUnclesInChain ¶ 

func (self *ChainManager) GetUnclesInChain(block *types.Block, length int) (uncles []*types.Header)

func (*ChainManager) HasBlock ¶ 

func (bc *ChainManager) HasBlock(hash common.Hash) bool

Block fetching methods

func (*ChainManager) InsertChain ¶ 

func (self *ChainManager) InsertChain(chain types.Blocks) (int, error)

InsertChain will attempt to insert the given chain in to the canonical chain or, otherwise, create a fork. It an error is returned it will return the index number of the failing block as well an error describing what went wrong (for possible errors see core/errors.go).

func (*ChainManager) LastBlockHash ¶ 

func (self *ChainManager) LastBlockHash() common.Hash

func (*ChainManager) Reset ¶ 

func (bc *ChainManager) Reset()

func (*ChainManager) ResetWithGenesisBlock ¶ 

func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block)

func (*ChainManager) SetHead ¶ 

func (bc *ChainManager) SetHead(head *types.Block)

func (*ChainManager) SetProcessor ¶ 

func (self *ChainManager) SetProcessor(proc types.BlockProcessor)

func (*ChainManager) State ¶ 

func (self *ChainManager) State() *state.StateDB

func (*ChainManager) Status ¶ 

func (self *ChainManager) Status() (td *big.Int, currentBlock common.Hash, genesisBlock common.Hash)

func (*ChainManager) Stop ¶ 

func (bc *ChainManager) Stop()

func (*ChainManager) Td ¶ 

func (self *ChainManager) Td() *big.Int

func (*ChainManager) WriteBlock ¶ 

func (self *ChainManager) WriteBlock(block *types.Block, queued bool) (status writeStatus, err error)

WriteBlock writes the block to the chain (or pending queue)

type ChainSideEvent ¶ 

type ChainSideEvent struct {
	Block *types.Block
	Logs  state.Logs
}

type ChainSplitEvent ¶ 

type ChainSplitEvent struct {
	Block *types.Block
	Logs  state.Logs
}

ChainSplit is posted when a new head is detected

type ChainUncleEvent ¶ 

type ChainUncleEvent struct {
	Block *types.Block
}

type Execution ¶ 

type Execution struct {
	Gas *big.Int
	// contains filtered or unexported fields
}

Execution is the execution environment for the given call or create action.

func NewExecution ¶ 

func NewExecution(env vm.Environment, address *common.Address, input []byte, gas, gasPrice, value *big.Int) *Execution

NewExecution returns a new execution environment that handles all calling and creation logic defined by the YP.

func (*Execution) Call ¶ 

func (self *Execution) Call(codeAddr common.Address, caller vm.ContextRef) ([]byte, error)

Call executes within the given context

func (*Execution) Create ¶ 

func (self *Execution) Create(caller vm.ContextRef) (ret []byte, err error, account *state.StateObject)

Create creates a new contract and runs the initialisation procedure of the contract. This returns the returned code for the contract and is stored elsewhere.

type FakePow ¶ 

type FakePow struct{}

FakePow is a non-validating proof of work implementation. It returns true from Verify for any block.

func (FakePow) GetHashrate ¶ 

func (f FakePow) GetHashrate() int64

func (FakePow) Search ¶ 

func (f FakePow) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte)

func (FakePow) Turbo ¶ 

func (f FakePow) Turbo(bool)

func (FakePow) Verify ¶ 

func (f FakePow) Verify(block pow.Block) bool

type Filter ¶ 

type Filter struct {
	BlockCallback       func(*types.Block, state.Logs)
	TransactionCallback func(*types.Transaction)
	LogsCallback        func(state.Logs)
	// contains filtered or unexported fields
}

Filtering interface

func NewFilter ¶ 

func NewFilter(eth Backend) *Filter

Create a new filter which uses a bloom filter on blocks to figure out whether a particular block is interesting or not.

func (*Filter) FilterLogs ¶ 

func (self *Filter) FilterLogs(logs state.Logs) state.Logs

func (*Filter) Find ¶ 

func (self *Filter) Find() state.Logs

Run filters logs with the current parameters set

func (*Filter) SetAddress ¶ 

func (self *Filter) SetAddress(addr []common.Address)

func (*Filter) SetEarliestBlock ¶ 

func (self *Filter) SetEarliestBlock(earliest int64)

Set the earliest and latest block for filtering. -1 = latest block (i.e., the current block) hash = particular hash from-to

func (*Filter) SetLatestBlock ¶ 

func (self *Filter) SetLatestBlock(latest int64)

func (*Filter) SetMax ¶ 

func (self *Filter) SetMax(max int)

func (*Filter) SetSkip ¶ 

func (self *Filter) SetSkip(skip int)

func (*Filter) SetTopics ¶ 

func (self *Filter) SetTopics(topics [][]common.Hash)

type GasPool ¶ added in v1.0.3 

type GasPool interface {
	AddGas(gas, price *big.Int)
	SubGas(gas, price *big.Int) error
}

GasPool tracks the amount of gas available during execution of the transactions in a block.

type GasPriceChanged ¶ 

type GasPriceChanged struct{ Price *big.Int }

type InvalidTxErr ¶ 

type InvalidTxErr struct {
	Message string
}

func InvalidTxError ¶ 

func InvalidTxError(err error) *InvalidTxErr

func (*InvalidTxErr) Error ¶ 

func (err *InvalidTxErr) Error() string

type KnownBlockError ¶ 

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

func (*KnownBlockError) Error ¶ 

func (self *KnownBlockError) Error() string

type Message ¶ 

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

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

	Nonce() uint64
	Data() []byte
}

Message represents a message sent to a contract.

type NewBlockEvent ¶ 

type NewBlockEvent struct{ Block *types.Block }

NewBlockEvent is posted when a block has been imported.

type NewMinedBlockEvent ¶ 

type NewMinedBlockEvent struct{ Block *types.Block }

NewMinedBlockEvent is posted when a block has been imported.

type NonceErr ¶ 

type NonceErr struct {
	Message string
	Is, Exp uint64
}

func NonceError ¶ 

func NonceError(is, exp uint64) *NonceErr

func (*NonceErr) Error ¶ 

func (err *NonceErr) Error() string

type ParentErr ¶ 

type ParentErr struct {
	Message string
}

Parent error. In case a parent is unknown this error will be thrown by the block manager

func (*ParentErr) Error ¶ 

func (err *ParentErr) Error() string

type PendingBlockEvent ¶ 

type PendingBlockEvent struct {
	Block *types.Block
	Logs  state.Logs
}

type StartMining ¶ 

type StartMining struct{}

Mining operation events

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 all the necessary work to work out a valid new state root. * 1) Nonce handling * 2) Pre pay / buy gas of the coinbase (miner) * 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(env vm.Environment, msg Message, gp GasPool) *StateTransition

func (*StateTransition) AddGas ¶ 

func (self *StateTransition) AddGas(amount *big.Int)

func (*StateTransition) BuyGas ¶ 

func (self *StateTransition) BuyGas() error

func (*StateTransition) From ¶ 

func (self *StateTransition) From() (*state.StateObject, error)

func (*StateTransition) To ¶ 

func (self *StateTransition) To() *state.StateObject

func (*StateTransition) UseGas ¶ 

func (self *StateTransition) UseGas(amount *big.Int) error

type TDError ¶ 

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

func (*TDError) Error ¶ 

func (self *TDError) Error() string

type TopMining ¶ 

type TopMining struct{}

type TxPool ¶ 

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

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

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

func NewTxPool ¶ 

func NewTxPool(eventMux *event.TypeMux, currentStateFn stateFn, gasLimitFn func() *big.Int) *TxPool

func (*TxPool) Add ¶ 

func (self *TxPool) Add(tx *types.Transaction) (err error)

Add queues a single transaction in the pool if it is valid.

func (*TxPool) AddTransactions ¶ 

func (self *TxPool) AddTransactions(txs []*types.Transaction)

AddTransactions attempts to queue all valid transactions in txs.

func (*TxPool) GetQueuedTransactions ¶ 

func (self *TxPool) GetQueuedTransactions() types.Transactions

GetQueuedTransactions returns all non-processable transactions.

func (*TxPool) GetTransaction ¶ 

func (tp *TxPool) GetTransaction(hash common.Hash) *types.Transaction

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

func (*TxPool) GetTransactions ¶ 

func (self *TxPool) GetTransactions() (txs types.Transactions)

GetTransactions returns all currently processable transactions. The returned slice may be modified by the caller.

func (*TxPool) RemoveTransactions ¶ 

func (self *TxPool) RemoveTransactions(txs types.Transactions)

RemoveTransactions removes all given transactions from the pool.

func (*TxPool) RemoveTx ¶ added in v1.0.1 

func (pool *TxPool) RemoveTx(hash common.Hash)

RemoveTx removes the transaction with the given hash from the pool.

func (*TxPool) State ¶ 

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

func (*TxPool) Stats ¶ 

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

func (*TxPool) Stop ¶ 

func (pool *TxPool) Stop()

type TxPostEvent ¶ 

type TxPostEvent struct{ Tx *types.Transaction }

TxPostEvent is posted when a transaction has been processed.

type TxPreEvent ¶ 

type TxPreEvent struct{ Tx *types.Transaction }

TxPreEvent is posted when a transaction enters the transaction pool.

type UncleErr ¶ 

type UncleErr struct {
	Message string
}

func (*UncleErr) Error ¶ 

func (err *UncleErr) Error() string

type VMEnv ¶ 

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

func NewEnv ¶ 

func NewEnv(state *state.StateDB, chain *ChainManager, msg Message, header *types.Header) *VMEnv

func (*VMEnv) AddLog ¶ 

func (self *VMEnv) AddLog(log *state.Log)

func (*VMEnv) AddStructLog ¶ 

func (self *VMEnv) AddStructLog(log vm.StructLog)

func (*VMEnv) BlockNumber ¶ 

func (self *VMEnv) BlockNumber() *big.Int

func (*VMEnv) Call ¶ 

func (self *VMEnv) Call(me vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)

func (*VMEnv) CallCode ¶ 

func (self *VMEnv) CallCode(me vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error)

func (*VMEnv) CanTransfer ¶ added in v1.1.0 

func (self *VMEnv) CanTransfer(from vm.Account, balance *big.Int) bool

func (*VMEnv) Coinbase ¶ 

func (self *VMEnv) Coinbase() common.Address

func (*VMEnv) Create ¶ 

func (self *VMEnv) Create(me vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef)

func (*VMEnv) Depth ¶ 

func (self *VMEnv) Depth() int

func (*VMEnv) Difficulty ¶ 

func (self *VMEnv) Difficulty() *big.Int

func (*VMEnv) GasLimit ¶ 

func (self *VMEnv) GasLimit() *big.Int

func (*VMEnv) GetHash ¶ 

func (self *VMEnv) GetHash(n uint64) common.Hash

func (*VMEnv) Origin ¶ 

func (self *VMEnv) Origin() common.Address

func (*VMEnv) SetDepth ¶ 

func (self *VMEnv) SetDepth(i int)

func (*VMEnv) SetVmType ¶ 

func (self *VMEnv) SetVmType(t vm.Type)

func (*VMEnv) State ¶ 

func (self *VMEnv) State() *state.StateDB

func (*VMEnv) StructLogs ¶ 

func (self *VMEnv) StructLogs() []vm.StructLog

func (*VMEnv) Time ¶ 

func (self *VMEnv) Time() *big.Int

func (*VMEnv) Transfer ¶ 

func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error

func (*VMEnv) Value ¶ 

func (self *VMEnv) Value() *big.Int

func (*VMEnv) VmType ¶ 

func (self *VMEnv) VmType() vm.Type

type ValidationErr ¶ 

type ValidationErr struct {
	Message string
}

Block validation error. If any validation fails, this error will be thrown

func ValidationError ¶ 

func ValidationError(format string, v ...interface{}) *ValidationErr

func (*ValidationErr) Error ¶ 

func (err *ValidationErr) Error() string

type ValueTransferError ¶ 

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

func ValueTransferErr ¶ 

func ValueTransferErr(str string, v ...interface{}) *ValueTransferError

func (*ValueTransferError) Error ¶ 

func (self *ValueTransferError) Error() string

Source Files ¶

View all Source files

Directories ¶

Path Synopsis
Package state provides a caching layer atop the Ethereum state trie.
 Package state provides a caching layer atop the Ethereum state trie.
Package types contains data types related to Ethereum consensus.
 Package types contains data types related to Ethereum consensus.
Package vm implements the Ethereum Virtual Machine.
 Package vm implements the Ethereum Virtual Machine.

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