core

package
v0.9.38 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jul 9, 2015 License: GPL-3.0, LGPL-2.1-or-later Imports: 30 Imported by: 12

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")
	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("f269c503aed286caaa0d114d6a5320e70abbc2febe37953207e76a2873f2ba79"): true,
	common.HexToHash("38f5bbbffd74804820ffa4bab0cd540e9de229725afb98c1a7e57936f4a714bc"): true,
	common.HexToHash("7064455b364775a16afbdecd75370e912c6e2879f202eda85b9beae547fff3ac"): true,
	common.HexToHash("5b7c80070a6eff35f3eb3181edb023465c776d40af2885571e1bc4689f3a44d8"): true,
}

Set of manually tracked bad hashes (usually hard forks)

View Source 
var BlockReward *big.Int = big.NewInt(1.5e+18)
View Source 
var DisableBadBlockReporting = true

DisabledBadBlockReporting can be set to prevent blocks being reported.

View Source 
var GenesisAccounts = []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"}
}`)

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, coinbase *state.StateObject) ([]byte, *big.Int, error)

func CalcDifficulty 

func CalcDifficulty(time, parentTime uint64, 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.

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 
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 := GenesisBlockForTesting(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(genesis, db, db, db, FakePow{}, evmux)
chainman.SetProcessor(NewBlockProcessor(db, 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: 5906250000000001000

func GenesisBlock 

func GenesisBlock(nonce uint64, db common.Database) *types.Block

GenesisBlock creates a genesis block with the given nonce.

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 GetReceipt 

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

GetReceipt returns a receipt by hash

func GetReceiptsFromBlock 

func GetReceiptsFromBlock(db common.Database, block *types.Block) types.Receipts

GetReceiptFromBlock returns all receipts with the given block

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 ParentError 

func ParentError(hash common.Hash) error

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 bool) error

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

func WriteHead 

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

WriteHead force writes the current head

Types

type AccountChange 

type AccountChange struct {
	Address, StateAddress []byte
}

type Backend 

type Backend interface {
	AccountManager() *accounts.Manager
	BlockProcessor() *BlockProcessor
	ChainManager() *ChainManager
	TxPool() *TxPool
	BlockDb() common.Database
	StateDb() common.Database
	ExtraDb() 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, extra common.Database, pow pow.PoW, chainManager *ChainManager, eventMux *event.TypeMux) *BlockProcessor

func (*BlockProcessor) ApplyTransaction 

func (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, 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(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) 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(genesis *types.Block, blockDb, stateDb, extraDb 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) TransState 

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

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
}

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{}

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 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, 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, 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) 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) 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() uint64

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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