core

package
v0.8.6-0...-97c3735 Latest Latest
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This package is not in the latest version of its module.

 Go to latest 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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