core

package
v0.9.23 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: May 21, 2015 License: LGPL-2.1-or-later Imports: 27 Imported by: 6,294

Documentation

Index

Constants

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 = 2
)

Variables

View Source 
var (
	CanonicalSeed = 1
	ForkSeed      = 2
)

So we can deterministically seed different blockchains

View Source 
var (
	BlockNumberErr  = errors.New("block number invalid")
	BlockFutureErr  = errors.New("block time is in the future")
	BlockEqualTSErr = errors.New("block time stamp equal to previous")
)
View Source 
var (
	ErrInvalidSender      = errors.New("Invalid sender")
	ErrNonce              = errors.New("Nonce too low")
	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")
)
View Source 
var BlockReward *big.Int = big.NewInt(1.5e+18)
View Source 
var GenesisData = []byte(`{
	"0000000000000000000000000000000000000001": {"balance": "1"},
	"0000000000000000000000000000000000000002": {"balance": "1"},
	"0000000000000000000000000000000000000003": {"balance": "1"},
	"0000000000000000000000000000000000000004": {"balance": "1"},
	"dbdbdb2cbd23b783741e8d7fcf51e459b497e4a6": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"e4157b34ea9615cfbde6b4fda419828124b70c78": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"b9c015918bdaba24b4ff057a92a3873d6eb201be": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"6c386a4b26f73c802f34673f7248bb118f97424a": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"cd2a3d9f938e13cd947ec05abc7fe734df8dd826": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"2ef47100e0787b915105fd5e3f4ff6752079d5cb": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"e6716f9544a56c530d868e4bfbacb172315bdead": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
	"1a26338f0d905e295fccb71fa9ea849ffa12aaf4": {"balance": "1606938044258990275541962092341162602522202993782792835301376"}
}`)
View Source 
var ZeroHash160 = make([]byte, 20)
View Source 
var ZeroHash256 = make([]byte, 32)
View Source 
var ZeroHash512 = make([]byte, 64)

Functions

func AccumulateRewards added in v0.9.17 

func AccumulateRewards(statedb *state.StateDB, block *types.Block)

func AddressFromMessage 

func AddressFromMessage(msg Message) common.Address

func ApplyMessage added in v0.9.17 

func ApplyMessage(env vm.Environment, msg Message, coinbase *state.StateObject) ([]byte, *big.Int, error)

func CalcDifficulty 

func CalcDifficulty(block, parent *types.Header) *big.Int

func CalcGasLimit added in v0.8.4 

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

func CalcTD added in v0.9.21 

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

func Disassemble 

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

func GenesisBlock added in v0.8.4 

func GenesisBlock(db common.Database) *types.Block

func IntrinsicGas added in v0.9.17 

func IntrinsicGas(msg Message) *big.Int

func IsInvalidTxErr added in v0.9.17 

func IsInvalidTxErr(err error) bool

func IsKnownBlockErr 

func IsKnownBlockErr(e error) bool

func IsNonceErr 

func IsNonceErr(err error) bool

func IsOutOfGasErr 

func IsOutOfGasErr(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 added in v0.9.17 

func IsValueTransferErr(e error) bool

func MakeBlock added in v0.9.17 

func MakeBlock(bman *BlockProcessor, parent *types.Block, i int, db common.Database, seed int) *types.Block

func MakeChain added in v0.9.17 

func MakeChain(bman *BlockProcessor, parent *types.Block, max int, db common.Database, seed int) types.Blocks

func MessageCreatesContract 

func MessageCreatesContract(msg Message) bool

func MessageGasValue 

func MessageGasValue(msg Message) *big.Int

func NewBlockFromParent added in v0.9.17 

func NewBlockFromParent(addr common.Address, parent *types.Block) *types.Block

Utility functions for making chains on the fly Exposed for sake of testing from other packages (eg. go-ethash)

func ParentError 

func ParentError(hash common.Hash) error

func UncleError 

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

Types

type AccountChange 

type AccountChange struct {
	Address, StateAddress []byte
}

type Backend added in v0.8.4 

type Backend interface {
	AccountManager() *accounts.Manager
	BlockProcessor() *BlockProcessor
	ChainManager() *ChainManager
	TxPool() *TxPool
	PeerCount() int
	IsListening() bool
	Peers() []*p2p.Peer
	BlockDb() common.Database
	StateDb() common.Database
	EventMux() *event.TypeMux
	Downloader() *downloader.Downloader
}

TODO move this to types?

type BlockCache added in v0.9.17 

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

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

func NewBlockCache added in v0.9.17 

func NewBlockCache(size int) *BlockCache

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

func (*BlockCache) Clear added in v0.9.17 

func (bc *BlockCache) Clear()

func (*BlockCache) Delete added in v0.9.17 

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

func (*BlockCache) Each added in v0.9.17 

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

func (*BlockCache) Get added in v0.9.17 

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

func (*BlockCache) Has added in v0.9.17 

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

func (*BlockCache) Push added in v0.9.17 

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

type BlockProcessor added in v0.8.4 

type BlockProcessor struct {

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

func NewBlockProc added in v0.9.17 

func NewBlockProc(db common.Database, cman *ChainManager, eventMux *event.TypeMux) *BlockProcessor

func NewBlockProcessor added in v0.8.4 

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

func NewCanonical added in v0.9.17 

func NewCanonical(n int, db common.Database) (*BlockProcessor, error)

func (*BlockProcessor) ApplyTransaction added in v0.8.4 

func (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, statedb *state.StateDB, block *types.Block, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error)

func (*BlockProcessor) ApplyTransactions added in v0.8.4 

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

func (*BlockProcessor) ChainManager added in v0.9.17 

func (self *BlockProcessor) ChainManager() *ChainManager

func (*BlockProcessor) GetBlockReceipts added in v0.9.23 

func (self *BlockProcessor) GetBlockReceipts(bhash common.Hash) (receipts types.Receipts, err error)

func (*BlockProcessor) GetLogs added in v0.8.4 

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

func (*BlockProcessor) Process added in v0.8.4 

func (sm *BlockProcessor) Process(block *types.Block) (logs state.Logs, 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 added in v0.9.17 

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

func (*BlockProcessor) TransitionState added in v0.8.4 

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

func (*BlockProcessor) ValidateHeader added in v0.9.17 

func (sm *BlockProcessor) ValidateHeader(block, parent *types.Header, checkPow bool) error

Validates the current block. Returns an error if the block was invalid, an uncle or anything that isn't on the current block chain. Validation validates easy over difficult (dagger takes longer time = difficult)

func (*BlockProcessor) VerifyUncles added in v0.9.17 

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

type ChainEvent added in v0.8.4 

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

type ChainHeadEvent added in v0.9.17 

type ChainHeadEvent struct{ Block *types.Block }

type ChainManager 

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

func NewChainMan added in v0.9.17 

func NewChainMan(block *types.Block, eventMux *event.TypeMux, db common.Database) *ChainManager

func NewChainManager 

func NewChainManager(blockDb, stateDb common.Database, pow pow.PoW, mux *event.TypeMux) *ChainManager

func (*ChainManager) CalcTotalDiff 

func (self *ChainManager) CalcTotalDiff(block *types.Block) (*big.Int, 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) GasLimit added in v0.9.17 

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

func (*ChainManager) Genesis 

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

Accessors

func (*ChainManager) GetAncestors added in v0.8.4 

func (self *ChainManager) GetAncestors(block *types.Block, length int) (blocks []*types.Block)

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 added in v0.8.4 

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

func (*ChainManager) GetUnclesInChain added in v0.8.4 

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) NewBlock 

func (bc *ChainManager) NewBlock(coinbase common.Address) *types.Block

Block creation & chain handling

func (*ChainManager) Reset 

func (bc *ChainManager) Reset()

func (*ChainManager) ResetWithGenesisBlock added in v0.9.17 

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

func (*ChainManager) SetHead added in v0.9.17 

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 added in v0.8.4 

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) TransState 

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

func (*ChainManager) TxState added in v0.9.17 

func (self *ChainManager) TxState() *state.ManagedState

type ChainSideEvent added in v0.9.17 

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

type ChainSplitEvent added in v0.8.4 

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

ChainSplit is posted when a new head is detected

type ChainUncleEvent added in v0.9.17 

type ChainUncleEvent struct {
	Block *types.Block
}

type Execution 

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

func NewExecution 

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

func (*Execution) Call 

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

func (*Execution) Create 

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

type FakePow added in v0.9.17 

type FakePow struct{}

So we can generate blocks easily

func (FakePow) GetHashrate added in v0.9.17 

func (f FakePow) GetHashrate() int64

func (FakePow) Search added in v0.9.17 

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

func (FakePow) Turbo added in v0.9.17 

func (f FakePow) Turbo(bool)

func (FakePow) Verify added in v0.9.17 

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 added in v0.8.4 

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 added in v0.8.4 

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 added in v0.8.4 

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

type GasPriceChanged added in v0.9.20 

type GasPriceChanged struct{ Price *big.Int }

type InvalidTxErr added in v0.9.17 

type InvalidTxErr struct {
	Message string
}

func InvalidTxError added in v0.9.17 

func InvalidTxError(err error) *InvalidTxErr

func (*InvalidTxErr) Error added in v0.9.17 

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 added in v0.8.4 

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 OutOfGasErr 

type OutOfGasErr struct {
	Message string
}

func OutOfGasError 

func OutOfGasError() *OutOfGasErr

func (*OutOfGasErr) Error 

func (self *OutOfGasErr) 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 added in v0.8.4 

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

type StartMining added in v0.9.17 

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, coinbase *state.StateObject) *StateTransition

func (*StateTransition) AddGas 

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

func (*StateTransition) BuyGas 

func (self *StateTransition) BuyGas() error

func (*StateTransition) Coinbase 

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

func (*StateTransition) From 

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

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 added in v0.9.17 

type TopMining struct{}

type TxMsg 

type TxMsg struct{ Tx *types.Transaction }

type TxPool 

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

The tx pool a thread safe transaction pool handler. In order to guarantee a non blocking pool we use a queue channel which can be independently read without needing access to the actual pool.

func NewTxPool 

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

func (*TxPool) Add 

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

func (*TxPool) AddTransactions added in v0.8.4 

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

func (*TxPool) Flush 

func (pool *TxPool) Flush()

func (*TxPool) GetQueuedTransactions added in v0.9.17 

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

func (*TxPool) GetTransaction added in v0.9.17 

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

GetTransaction allows you to check the pending and queued transaction in the transaction pool. It has two stategies, first check the pool (map) then check the queue

func (*TxPool) GetTransactions added in v0.8.4 

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

func (*TxPool) RemoveTransactions added in v0.9.17 

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

func (*TxPool) Size 

func (self *TxPool) Size() int

func (*TxPool) Start 

func (pool *TxPool) Start()

func (*TxPool) Stop 

func (pool *TxPool) Stop()

func (*TxPool) ValidateTransaction 

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

type TxPoolHook 

type TxPoolHook chan *types.Transaction

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 TxProcessor 

type TxProcessor interface {
	ProcessTransaction(tx *types.Transaction)
}

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, block *types.Block) *VMEnv

func (*VMEnv) AddLog 

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

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) 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 added in v0.8.4 

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 added in v0.8.4 

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

func (*VMEnv) State 

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

func (*VMEnv) Time 

func (self *VMEnv) Time() int64

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 added in v0.8.4 

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 added in v0.9.17 

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

func ValueTransferErr added in v0.9.17 

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

func (*ValueTransferError) Error added in v0.9.17 

func (self *ValueTransferError) Error() string

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