blockchain

package
v0.2.1 Latest Latest
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 Go to latest Published: Apr 16, 2019 License: MIT Imports: 27 Imported by: 0

Documentation

Index

Constants

View Source 
const BITSPERKEY = 10

used to compute the size of bloom filter bits array . too small will lead to high false positive rate.

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const (
	MaxBlockLocatorsPerMsg = 500
)
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const (
	MaxTimeOffsetSeconds = 2 * 60 * 60
)
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const TaskChanCap = 4
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const ValueExist = 1
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const ValueNone = 0

Variables

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var (
	OriginIssuanceAmount           = 20000 * 10000 * 100000000
	InflationPerYear               = OriginIssuanceAmount * 3 / 100
	BlockGenerateInterval          = int64(config.Parameters.ChainParam.TargetTimePerBlock / time.Second)
	GeneratedBlocksPerYear         = 365 * 24 * 60 * 60 / BlockGenerateInterval
	TotalRewardAmountPerBlock      = common.Fixed64(float64(24 * 100000000))
	MinerRewardAmountPerBlock      = common.Fixed64(float64(4 * 100000000))
	FoundationRewardAmountPerBlock = common.Fixed64(float64(20 * 100000000))
)
View Source 
var FoundationAddress Uint168
View Source 
var FoundationAddress1 Uint168
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var FoundationAddress10 Uint168
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var FoundationAddress11 Uint168
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var FoundationAddress2 Uint168
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var FoundationAddress3 Uint168
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var FoundationAddress4 Uint168
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var FoundationAddress5 Uint168
View Source 
var FoundationAddress6 Uint168
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var FoundationAddress7 Uint168
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var FoundationAddress8 Uint168
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var FoundationAddress9 Uint168
View Source 
var (
	MinMemoryNodes = config.Parameters.ChainParam.MinMemoryNodes
)

Functions

func AddChildrenWork 

func AddChildrenWork(node *BlockNode, work *big.Int)

func BigToCompact 

func BigToCompact(n *big.Int) uint32

func CalcCurrentDifficulty 

func CalcCurrentDifficulty(currentBits uint32) string

func CalcNextRequiredDifficulty 

func CalcNextRequiredDifficulty(prevNode *BlockNode, newBlockTime time.Time) (uint32, error)

func CalcPastMedianTime 

func CalcPastMedianTime(node *BlockNode) time.Time

func CalcWork 

func CalcWork(bits uint32) *big.Int

(1 << 256) / (difficultyNum + 1)

func CheckAssetPrecision 

func CheckAssetPrecision(txn *Transaction) error

func CheckAttributeProgram 

func CheckAttributeProgram(tx *Transaction) error

func CheckBlockContext added in v0.2.0 

func CheckBlockContext(block *Block) error

func CheckDestructionAddress added in v0.2.0 

func CheckDestructionAddress(references map[*Input]*Output) error

func CheckDuplicateSidechainTx added in v0.2.0 

func CheckDuplicateSidechainTx(txn *Transaction) error

validate the transaction of duplicate sidechain transaction

func CheckOutputProgramHash added in v0.2.0 

func CheckOutputProgramHash(programHash Uint168) bool

func CheckProofOfWork 

func CheckProofOfWork(header *Header, powLimit *big.Int) error

func CheckSideChainPowConsensus added in v0.2.0 

func CheckSideChainPowConsensus(txn *Transaction, arbitrator []byte) error

func CheckTransactionCoinbaseOutputLock added in v0.2.0 

func CheckTransactionCoinbaseOutputLock(txn *Transaction) error

func CheckTransactionContext 

func CheckTransactionContext(txn *Transaction) ErrCode

CheckTransactionContext verifys a transaction with history transaction in ledger

func CheckTransactionFee added in v0.2.0 

func CheckTransactionFee(tx *Transaction, references map[*Input]*Output) error

func CheckTransactionInput 

func CheckTransactionInput(txn *Transaction) error

validate the transaction of duplicate UTXO input

func CheckTransactionOutput 

func CheckTransactionOutput(version uint32, txn *Transaction) error

func CheckTransactionPayload 

func CheckTransactionPayload(txn *Transaction) error

func CheckTransactionSanity 

func CheckTransactionSanity(version uint32, txn *Transaction) ErrCode

CheckTransactionSanity verifys received single transaction

func CheckTransactionSignature 

func CheckTransactionSignature(tx *Transaction, references map[*Input]*Output) error

func CheckTransactionSize 

func CheckTransactionSize(txn *Transaction) error

func CheckTransactionUTXOLock 

func CheckTransactionUTXOLock(txn *Transaction, references map[*Input]*Output) error

func CheckTransferCrossChainAssetTransaction added in v0.2.0 

func CheckTransferCrossChainAssetTransaction(txn *Transaction, references map[*Input]*Output) error

func CheckWithdrawFromSideChainTransaction added in v0.2.0 

func CheckWithdrawFromSideChainTransaction(txn *Transaction, references map[*Input]*Output) error

func CompactToBig 

func CompactToBig(compact uint32) *big.Int

func DumpBlockNode 

func DumpBlockNode(node *BlockNode)

func GetCurrentArbiter added in v0.2.0 

func GetCurrentArbiter() ([]byte, error)

func GetGenesisBlock 

func GetGenesisBlock() (*Block, error)

func GetTxFee 

func GetTxFee(tx *Transaction, assetID Uint256) Fixed64

func GetTxFeeMap 

func GetTxFeeMap(tx *Transaction) (map[Uint256]Fixed64, error)

func GetTxProgramHashes 

func GetTxProgramHashes(tx *Transaction, references map[*Input]*Output) ([]common.Uint168, error)

func GetUint16Array 

func GetUint16Array(source []byte) ([]uint16, error)

func HashToBig 

func HashToBig(hash *Uint256) *big.Int

func Init 

func Init(store IChainStore) error

func IsFinalizedTransaction 

func IsFinalizedTransaction(msgTx *Transaction, blockHeight uint32) bool

func NewCoinBaseTransaction 

func NewCoinBaseTransaction(coinBasePayload *PayloadCoinBase, currentHeight uint32) *Transaction

func PowCheckBlockContext 

func PowCheckBlockContext(block *Block, prevNode *BlockNode, ledger *Ledger) error

func PowCheckBlockSanity 

func PowCheckBlockSanity(block *Block, powLimit *big.Int, timeSource MedianTimeSource) error

func RunPrograms 

func RunPrograms(data []byte, hashes []common.Uint168, programs []*Program) error

func SortPrograms added in v0.2.0 

func SortPrograms(programs []*Program) (err error)

func ToByteArray 

func ToByteArray(source []uint16) []byte

Types

type BlockNode 

type BlockNode struct {
	Hash        *Uint256
	ParentHash  *Uint256
	Height      uint32
	Version     uint32
	Bits        uint32
	Timestamp   uint32
	WorkSum     *big.Int
	InMainChain bool
	Parent      *BlockNode
	Children    []*BlockNode
}

func NewBlockNode 

func NewBlockNode(header *Header, hash *Uint256) *BlockNode

func RemoveChildNode 

func RemoveChildNode(children []*BlockNode, node *BlockNode) []*BlockNode

type Blockchain 

type Blockchain struct {
	BlockHeight    uint32
	GenesisHash    Uint256
	BestChain      *BlockNode
	Root           *BlockNode
	Index          map[Uint256]*BlockNode
	IndexLock      sync.RWMutex
	DepNodes       map[Uint256][]*BlockNode
	Orphans        map[Uint256]*OrphanBlock
	PrevOrphans    map[Uint256][]*OrphanBlock
	OldestOrphan   *OrphanBlock
	BlockCache     map[Uint256]*Block
	TimeSource     MedianTimeSource
	MedianTimePast time.Time
	OrphanLock     sync.RWMutex
	BCEvents       *events.Event

	AssetID Uint256
	// contains filtered or unexported fields
}

func NewBlockchain 

func NewBlockchain(height uint32) *Blockchain

func (*Blockchain) AddBlock 

func (b *Blockchain) AddBlock(block *Block) (bool, bool, error)

func (*Blockchain) AddNodeToIndex 

func (b *Blockchain) AddNodeToIndex(node *BlockNode)

func (*Blockchain) AddOrphanBlock 

func (b *Blockchain) AddOrphanBlock(block *Block)

func (*Blockchain) BlockExists 

func (b *Blockchain) BlockExists(hash *Uint256) bool

func (*Blockchain) BlockLocatorFromHash 

func (b *Blockchain) BlockLocatorFromHash(inhash *Uint256) []*Uint256

func (*Blockchain) ConnectBestChain 

func (b *Blockchain) ConnectBestChain(node *BlockNode, block *Block) (bool, error)

func (*Blockchain) ConnectBlock 

func (b *Blockchain) ConnectBlock(node *BlockNode, block *Block) error

connectBlock handles connecting the passed node/block to the end of the main (best) chain.

func (*Blockchain) ContainsTransaction 

func (b *Blockchain) ContainsTransaction(hash Uint256) bool

func (*Blockchain) CurrentBlockHash 

func (b *Blockchain) CurrentBlockHash() Uint256

func (*Blockchain) DisconnectBlock 

func (b *Blockchain) DisconnectBlock(node *BlockNode, block *Block) error

// disconnectBlock handles disconnecting the passed node/block from the end of // the main (best) chain.

func (*Blockchain) DumpState 

func (b *Blockchain) DumpState()

func (*Blockchain) GetBestHeight 

func (b *Blockchain) GetBestHeight() uint32

func (*Blockchain) GetHeader 

func (b *Blockchain) GetHeader(hash Uint256) (*Header, error)

func (*Blockchain) GetOrphanRoot 

func (b *Blockchain) GetOrphanRoot(hash *Uint256) *Uint256

func (*Blockchain) GetPrevNodeFromBlock 

func (b *Blockchain) GetPrevNodeFromBlock(block *Block) (*BlockNode, error)

getPrevNodeFromBlock returns a block node for the block previous to the passed block (the passed block's parent). When it is already in the memory block chain, it simply returns it. Otherwise, it loads the previous block from the block database, creates a new block node from it, and returns it. The returned node will be nil if the genesis block is passed.

func (*Blockchain) GetPrevNodeFromNode 

func (b *Blockchain) GetPrevNodeFromNode(node *BlockNode) (*BlockNode, error)

getPrevNodeFromNode returns a block node for the block previous to the passed block node (the passed block node's parent). When the node is already connected to a parent, it simply returns it. Otherwise, it loads the associated block from the database to obtain the previous hash and uses that to dynamically create a new block node and return it. The memory block chain is updated accordingly. The returned node will be nil if the genesis block is passed.

func (*Blockchain) GetReorganizeNodes 

func (b *Blockchain) GetReorganizeNodes(node *BlockNode) (*list.List, *list.List)

getReorganizeNodes finds the fork point between the main chain and the passed node and returns a list of block nodes that would need to be detached from the main chain and a list of block nodes that would need to be attached to the fork point (which will be the end of the main chain after detaching the returned list of block nodes) in order to reorganize the chain such that the passed node is the new end of the main chain. The lists will be empty if the passed node is not on a side chain.

func (*Blockchain) IsKnownOrphan 

func (b *Blockchain) IsKnownOrphan(hash *Uint256) bool

func (*Blockchain) LatestBlockLocator 

func (b *Blockchain) LatestBlockLocator() ([]*Uint256, error)

func (*Blockchain) LatestLocatorHash 

func (b *Blockchain) LatestLocatorHash(locator []*Uint256) *Uint256

func (*Blockchain) LoadBlockNode 

func (b *Blockchain) LoadBlockNode(blockHeader *Header, hash *Uint256) (*BlockNode, error)

func (*Blockchain) LookupNodeInIndex 

func (b *Blockchain) LookupNodeInIndex(hash *Uint256) (*BlockNode, bool)

func (*Blockchain) MedianAdjustedTime 

func (b *Blockchain) MedianAdjustedTime() time.Time

func (*Blockchain) ProcessBlock 

func (b *Blockchain) ProcessBlock(block *Block) (bool, bool, error)

(bool, bool, error) 1. inMainChain 2. isOphan 3. error

func (*Blockchain) ProcessOrphans 

func (b *Blockchain) ProcessOrphans(hash *Uint256) error

func (*Blockchain) PruneBlockNodes 

func (b *Blockchain) PruneBlockNodes() error

func (*Blockchain) RemoveBlockNode 

func (b *Blockchain) RemoveBlockNode(node *BlockNode) error

func (*Blockchain) RemoveNodeFromIndex 

func (b *Blockchain) RemoveNodeFromIndex(node *BlockNode)

func (*Blockchain) RemoveOrphanBlock 

func (b *Blockchain) RemoveOrphanBlock(orphan *OrphanBlock)

func (*Blockchain) ReorganizeChain 

func (b *Blockchain) ReorganizeChain(detachNodes, attachNodes *list.List) error

reorganizeChain reorganizes the block chain by disconnecting the nodes in the detachNodes list and connecting the nodes in the attach list. It expects that the lists are already in the correct order and are in sync with the end of the current best chain. Specifically, nodes that are being disconnected must be in reverse order (think of popping them off the end of the chain) and nodes the are being attached must be in forwards order (think pushing them onto the end of the chain).

func (*Blockchain) UpdateBestHeight 

func (b *Blockchain) UpdateBestHeight(val uint32)

type ChainStore 

type ChainStore struct {
	IStore
	// contains filtered or unexported fields
}

func (*ChainStore) Close 

func (c *ChainStore) Close()

func (*ChainStore) ContainsUnspent 

func (c *ChainStore) ContainsUnspent(txID Uint256, index uint16) (bool, error)

func (*ChainStore) GetAsset 

func (c *ChainStore) GetAsset(hash Uint256) (*Asset, error)

func (*ChainStore) GetAssets 

func (c *ChainStore) GetAssets() map[Uint256]*Asset

func (*ChainStore) GetBlock 

func (c *ChainStore) GetBlock(hash Uint256) (*Block, error)

func (*ChainStore) GetBlockHash 

func (c *ChainStore) GetBlockHash(height uint32) (Uint256, error)

func (*ChainStore) GetCurrentBlockHash 

func (c *ChainStore) GetCurrentBlockHash() Uint256

func (*ChainStore) GetHeader 

func (c *ChainStore) GetHeader(hash Uint256) (*Header, error)

func (*ChainStore) GetHeight 

func (c *ChainStore) GetHeight() uint32

func (*ChainStore) GetSidechainTx added in v0.2.0 

func (c *ChainStore) GetSidechainTx(sidechainTxHash Uint256) (byte, error)

func (*ChainStore) GetTransaction 

func (c *ChainStore) GetTransaction(txID Uint256) (*Transaction, uint32, error)

func (*ChainStore) GetTxReference 

func (c *ChainStore) GetTxReference(tx *Transaction) (map[*Input]*Output, error)

func (*ChainStore) GetUnspent 

func (c *ChainStore) GetUnspent(txID Uint256, index uint16) (*Output, error)

func (*ChainStore) GetUnspentElementFromProgramHash 

func (c *ChainStore) GetUnspentElementFromProgramHash(programHash Uint168, assetid Uint256, height uint32) ([]*UTXO, error)

func (*ChainStore) GetUnspentFromProgramHash 

func (c *ChainStore) GetUnspentFromProgramHash(programHash Uint168, assetid Uint256) ([]*UTXO, error)

func (*ChainStore) GetUnspentsFromProgramHash 

func (c *ChainStore) GetUnspentsFromProgramHash(programHash Uint168) (map[Uint256][]*UTXO, error)

func (*ChainStore) InitWithGenesisBlock 

func (c *ChainStore) InitWithGenesisBlock(genesisBlock *Block) (uint32, error)

func (*ChainStore) IsBlockInStore 

func (c *ChainStore) IsBlockInStore(hash Uint256) bool

func (*ChainStore) IsDoubleSpend 

func (c *ChainStore) IsDoubleSpend(txn *Transaction) bool

func (*ChainStore) IsSidechainTxHashDuplicate added in v0.2.0 

func (c *ChainStore) IsSidechainTxHashDuplicate(sidechainTxHash Uint256) bool

func (*ChainStore) IsTxHashDuplicate 

func (c *ChainStore) IsTxHashDuplicate(txhash Uint256) bool

func (*ChainStore) PersistAsset 

func (c *ChainStore) PersistAsset(assetID Uint256, asset Asset) error

func (*ChainStore) PersistBlockHash 

func (c *ChainStore) PersistBlockHash(b *Block) error

key: DATA_BlockHash || height value: block hash

func (*ChainStore) PersistCurrentBlock 

func (c *ChainStore) PersistCurrentBlock(b *Block) error

key: SYS_CurrentBlock value: current block hash || height

func (*ChainStore) PersistSidechainTx added in v0.2.0 

func (c *ChainStore) PersistSidechainTx(sidechainTxHash Uint256)

func (*ChainStore) PersistTransaction 

func (c *ChainStore) PersistTransaction(tx *Transaction, height uint32) error

func (*ChainStore) PersistTransactions 

func (c *ChainStore) PersistTransactions(b *Block) error

func (*ChainStore) PersistTrimmedBlock 

func (c *ChainStore) PersistTrimmedBlock(b *Block) error

key: DATA_Header || block hash value: sysfee(8bytes) || trimmed block

func (*ChainStore) PersistUnspend 

func (c *ChainStore) PersistUnspend(b *Block) error

func (*ChainStore) PersistUnspendUTXOs 

func (c *ChainStore) PersistUnspendUTXOs(b *Block) error

func (*ChainStore) PersistUnspentWithProgramHash 

func (c *ChainStore) PersistUnspentWithProgramHash(programHash Uint168, assetid Uint256, height uint32, unspents []*UTXO) error

func (*ChainStore) RemoveHeaderListElement 

func (c *ChainStore) RemoveHeaderListElement(hash Uint256)

func (*ChainStore) RollbackAsset 

func (c *ChainStore) RollbackAsset(assetID Uint256) error

func (*ChainStore) RollbackBlock 

func (c *ChainStore) RollbackBlock(blockHash Uint256) error

func (*ChainStore) RollbackBlockHash 

func (c *ChainStore) RollbackBlockHash(b *Block) error

func (*ChainStore) RollbackCurrentBlock 

func (c *ChainStore) RollbackCurrentBlock(b *Block) error

func (*ChainStore) RollbackSidechainTx added in v0.2.0 

func (c *ChainStore) RollbackSidechainTx(sidechainTxHash Uint256) error

func (*ChainStore) RollbackTransaction 

func (c *ChainStore) RollbackTransaction(txn *Transaction) error

func (*ChainStore) RollbackTransactions 

func (c *ChainStore) RollbackTransactions(b *Block) error

func (*ChainStore) RollbackTrimmedBlock 

func (c *ChainStore) RollbackTrimmedBlock(b *Block) error

func (*ChainStore) RollbackUnspend 

func (c *ChainStore) RollbackUnspend(b *Block) error

func (*ChainStore) RollbackUnspendUTXOs 

func (c *ChainStore) RollbackUnspendUTXOs(b *Block) error

func (*ChainStore) SaveBlock 

func (c *ChainStore) SaveBlock(b *Block) error

type DataEntryPrefix 

type DataEntryPrefix byte

DataEntryPrefix 

const (
	// DATA
	DATA_BlockHash   DataEntryPrefix = 0x00
	DATA_Header      DataEntryPrefix = 0x01
	DATA_Transaction DataEntryPrefix = 0x02

	// INDEX
	IX_HeaderHashList DataEntryPrefix = 0x80
	IX_Unspent        DataEntryPrefix = 0x90
	IX_Unspent_UTXO   DataEntryPrefix = 0x91
	IX_SideChain_Tx   DataEntryPrefix = 0x92

	// ASSET
	ST_Info DataEntryPrefix = 0xc0

	//SYSTEM
	SYS_CurrentBlock      DataEntryPrefix = 0x40
	SYS_CurrentBookKeeper DataEntryPrefix = 0x42

	//CONFIG
	CFG_Version DataEntryPrefix = 0xf0
)

type IChainStore 

type IChainStore interface {
	InitWithGenesisBlock(genesisblock *Block) (uint32, error)

	SaveBlock(b *Block) error
	GetBlock(hash Uint256) (*Block, error)
	GetBlockHash(height uint32) (Uint256, error)
	IsDoubleSpend(tx *Transaction) bool

	GetHeader(hash Uint256) (*Header, error)

	RollbackBlock(hash Uint256) error

	GetTransaction(txID Uint256) (*Transaction, uint32, error)
	GetTxReference(tx *Transaction) (map[*Input]*Output, error)

	PersistAsset(assetid Uint256, asset Asset) error
	GetAsset(hash Uint256) (*Asset, error)

	PersistSidechainTx(sidechainTxHash Uint256)
	GetSidechainTx(sidechainTxHash Uint256) (byte, error)

	GetCurrentBlockHash() Uint256
	GetHeight() uint32

	RemoveHeaderListElement(hash Uint256)

	GetUnspent(txID Uint256, index uint16) (*Output, error)
	ContainsUnspent(txID Uint256, index uint16) (bool, error)
	GetUnspentFromProgramHash(programHash Uint168, assetid Uint256) ([]*UTXO, error)
	GetUnspentsFromProgramHash(programHash Uint168) (map[Uint256][]*UTXO, error)
	GetAssets() map[Uint256]*Asset

	IsTxHashDuplicate(txhash Uint256) bool
	IsSidechainTxHashDuplicate(sidechainTxHash Uint256) bool
	IsBlockInStore(hash Uint256) bool
	Close()
}

IChainStore provides func with store package.

func NewChainStore 

func NewChainStore() (IChainStore, error)

type IIterator 

type IIterator interface {
	Next() bool
	Prev() bool
	First() bool
	Last() bool
	Seek(key []byte) bool
	Key() []byte
	Value() []byte
	Release()
}

type IStore 

type IStore interface {
	Put(key []byte, value []byte) error
	Get(key []byte) ([]byte, error)
	Delete(key []byte) error
	NewBatch()
	BatchPut(key []byte, value []byte)
	BatchDelete(key []byte)
	BatchCommit() error
	Close() error
	NewIterator(prefix []byte) IIterator
}

type Iterator 

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

func (*Iterator) First 

func (it *Iterator) First() bool

func (*Iterator) Key 

func (it *Iterator) Key() []byte

func (*Iterator) Last 

func (it *Iterator) Last() bool

func (*Iterator) Next 

func (it *Iterator) Next() bool

func (*Iterator) Prev 

func (it *Iterator) Prev() bool

func (*Iterator) Release 

func (it *Iterator) Release()

func (*Iterator) Seek 

func (it *Iterator) Seek(key []byte) bool

func (*Iterator) Value 

func (it *Iterator) Value() []byte

type Ledger 

type Ledger struct {
	Blockchain *Blockchain
	Store      IChainStore
}

Ledger - the struct for ledger 

var DefaultLedger *Ledger

func (*Ledger) BlockInLedger 

func (l *Ledger) BlockInLedger(hash Uint256) bool

BlockInLedger checks if the block existed in ledger

func (*Ledger) GetAsset 

func (l *Ledger) GetAsset(assetID Uint256) (*Asset, error)

Get the Asset from store.

func (*Ledger) GetBlockWithHash 

func (l *Ledger) GetBlockWithHash(hash Uint256) (*Block, error)

Get block with block hash.

func (*Ledger) GetBlockWithHeight 

func (l *Ledger) GetBlockWithHeight(height uint32) (*Block, error)

Get Block With Height.

func (*Ledger) GetLocalBlockChainHeight 

func (l *Ledger) GetLocalBlockChainHeight() uint32

Get local block chain height.

func (*Ledger) GetTransactionWithHash 

func (l *Ledger) GetTransactionWithHash(hash Uint256) (*Transaction, error)

Get transaction with hash.

func (*Ledger) IsDoubleSpend 

func (l *Ledger) IsDoubleSpend(Tx *Transaction) bool

check weather the transaction contains the doubleSpend.

type LevelDB 

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

func NewLevelDB 

func NewLevelDB(file string) (*LevelDB, error)

func (*LevelDB) BatchCommit 

func (ldb *LevelDB) BatchCommit() error

func (*LevelDB) BatchDelete 

func (ldb *LevelDB) BatchDelete(key []byte)

func (*LevelDB) BatchPut 

func (ldb *LevelDB) BatchPut(key []byte, value []byte)

func (*LevelDB) Close 

func (ldb *LevelDB) Close() error

func (*LevelDB) Delete 

func (ldb *LevelDB) Delete(key []byte) error

func (*LevelDB) Get 

func (ldb *LevelDB) Get(key []byte) ([]byte, error)

func (*LevelDB) NewBatch 

func (ldb *LevelDB) NewBatch()

func (*LevelDB) NewIterator 

func (ldb *LevelDB) NewIterator(prefix []byte) IIterator

func (*LevelDB) Put 

func (ldb *LevelDB) Put(key []byte, value []byte) error

type MedianTimeSource 

type MedianTimeSource interface {
	// AdjustedTime returns the current time adjusted by the median time
	// offset as calculated from the time samples added by AddTimeSample.
	AdjustedTime() time.Time

	// AddTimeSample adds a time sample that is used when determining the
	// median time of the added samples.
	AddTimeSample(id string, timeVal time.Time)

	// Offset returns the number of seconds to adjust the local clock based
	// upon the median of the time samples added by AddTimeData.
	Offset() time.Duration
}

MedianTimeSource provides a mechanism to add several time samples which are used to determine a median time which is then used as an offset to the local clock.

func NewMedianTime 

func NewMedianTime() MedianTimeSource

NewMedianTime returns a new instance of concurrency-safe implementation of the MedianTimeSource interface. The returned implementation contains the rules necessary for proper time handling in the chain consensus rules and expects the time samples to be added from the timestamp field of the version message received from remote peers that successfully connect and negotiate.

type OrphanBlock 

type OrphanBlock struct {
	Block      *Block
	Expiration time.Time
}

type TxPool 

type TxPool struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func (*TxPool) AppendToTxnPool 

func (pool *TxPool) AppendToTxnPool(txn *Transaction) ErrCode

append transaction to txnpool when check ok. 1.check 2.check with ledger(db) 3.check with pool

func (*TxPool) CleanSubmittedTransactions 

func (pool *TxPool) CleanSubmittedTransactions(block *Block) error

clean the trasaction Pool with committed block.

func (*TxPool) GetTransaction 

func (pool *TxPool) GetTransaction(hash Uint256) *Transaction

get the transaction by hash

func (*TxPool) GetTransactionCount 

func (pool *TxPool) GetTransactionCount() int

func (*TxPool) GetTransactionPool added in v0.2.0 

func (pool *TxPool) GetTransactionPool(hasMaxCount bool) map[Uint256]*Transaction

get the transaction in txnpool

func (*TxPool) Init 

func (pool *TxPool) Init()

func (*TxPool) IsDuplicateSidechainTx added in v0.2.0 

func (pool *TxPool) IsDuplicateSidechainTx(sidechainTxHash Uint256) bool

func (*TxPool) MaybeAcceptTransaction 

func (pool *TxPool) MaybeAcceptTransaction(txn *Transaction) error

func (*TxPool) RemoveTransaction 

func (pool *TxPool) RemoveTransaction(txn *Transaction)

type UTXO 

type UTXO struct {
	TxID  Uint256
	Index uint32
	Value Fixed64
}

func (*UTXO) Deserialize 

func (uu *UTXO) Deserialize(r io.Reader) error

func (*UTXO) Serialize 

func (uu *UTXO) Serialize(w io.Writer)

Source Files

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