core

package
v0.8.6-0...-97c3735 Latest Latest
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Published: May 6, 2015 License: LGPL-2.1-or-later Imports: 24 Imported by: 0

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")
	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

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

func AddressFromMessage

func AddressFromMessage(msg Message) common.Address

func ApplyMessage

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

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

func CalculateTD

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

func Disassemble

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

func GenesisBlock

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

func IntrinsicGas

func IntrinsicGas(msg Message) *big.Int

func IsInvalidTxErr

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

func IsValueTransferErr(e error) bool

func MakeBlock

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

func MakeChain

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

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(str string) error

Types

type AccountChange

type AccountChange struct {
	Address, StateAddress []byte
}

type Backend

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

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 BlockProcessor

type BlockProcessor struct {

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

func NewBlockProc

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

func NewBlockProcessor

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

func NewCanonical

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

func (*BlockProcessor) ApplyTransaction

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

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

func (*BlockProcessor) ChainManager

func (self *BlockProcessor) ChainManager() *ChainManager

func (*BlockProcessor) GetLogs

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

func (*BlockProcessor) Process

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

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) ValidateHeader

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

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

type ChainEvent

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

type ChainHeadEvent

type ChainHeadEvent struct{ Block *types.Block }

type ChainManager

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

func NewChainMan

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

func NewChainManager

func NewChainManager(blockDb, stateDb common.Database, 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

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

func (*ChainManager) Genesis

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

Accessors

func (*ChainManager) GetAncestors

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

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

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) NewBlock

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

Block creation & chain handling

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) TransState

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

func (*ChainManager) TxState

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

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
}

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

type FakePow struct{}

So we can generate blocks easily

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)
	PendingCallback 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 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 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

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, 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

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

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

func (*TxPool) Flush

func (pool *TxPool) Flush()

func (*TxPool) GetQueuedTransactions

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

func (*TxPool) GetTransactions

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

func (*TxPool) RemoveTransactions

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

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) 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

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

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