preprocess

Documentation

Index

• func NewBalanceComputation() (*balanceComputation, error)
• func NewBlockSizeComputation(marshalizer marshal.Marshalizer, blockSizeThrottler BlockSizeThrottler, ...) (*blockSizeComputation, error)
• func NewGasComputation(economicsFee process.FeeHandler, txTypeHandler process.TxTypeHandler) (*gasComputation, error)
• func NewRewardTxPreprocessor(rewardTxDataPool dataRetriever.ShardedDataCacherNotifier, ...) (*rewardTxPreprocessor, error)
• func NewSmartContractResultPreprocessor(scrDataPool dataRetriever.ShardedDataCacherNotifier, ...) (*smartContractResults, error)
• func NewTransactionPreprocessor(txDataPool dataRetriever.ShardedDataCacherNotifier, ...) (*transactions, error)
• func NewValidatorInfoPreprocessor(hasher hashing.Hasher, marshalizer marshal.Marshalizer) (*validatorInfoPreprocessor, error)
• func SortTransactionsBySenderAndNonce(transactions []*txcache.WrappedTransaction)
• type BalanceComputationHandler
• type BlockSizeComputationHandler
• type BlockSizeThrottler
• type BlockTracker
• type SortedTransactionsProvider
• type TxCache

Examples

• SortTransactionsBySenderAndNonce

Functions

func NewBalanceComputation

func NewBalanceComputation() (*balanceComputation, error)

NewBalanceComputation creates a new object which computes the addresses balances

func NewBlockSizeComputation

func NewBlockSizeComputation(
	marshalizer marshal.Marshalizer,
	blockSizeThrottler BlockSizeThrottler,
	maxSize uint32,
) (*blockSizeComputation, error)

NewBlockSizeComputation creates a blockSizeComputation instance

func NewGasComputation

func NewGasComputation(
	economicsFee process.FeeHandler,
	txTypeHandler process.TxTypeHandler,
) (*gasComputation, error)

NewGasComputation creates a new object which computes the gas consumption

func NewRewardTxPreprocessor

func NewRewardTxPreprocessor(
	rewardTxDataPool dataRetriever.ShardedDataCacherNotifier,
	store dataRetriever.StorageService,
	hasher hashing.Hasher,
	marshalizer marshal.Marshalizer,
	rewardProcessor process.RewardTransactionProcessor,
	shardCoordinator sharding.Coordinator,
	accounts state.AccountsAdapter,
	onRequestRewardTransaction func(shardID uint32, txHashes [][]byte),
	gasHandler process.GasHandler,
	pubkeyConverter core.PubkeyConverter,
	blockSizeComputation BlockSizeComputationHandler,
	balanceComputation BalanceComputationHandler,
) (*rewardTxPreprocessor, error)

NewRewardTxPreprocessor creates a new reward transaction preprocessor object

func NewSmartContractResultPreprocessor

func NewSmartContractResultPreprocessor(
	scrDataPool dataRetriever.ShardedDataCacherNotifier,
	store dataRetriever.StorageService,
	hasher hashing.Hasher,
	marshalizer marshal.Marshalizer,
	scrProcessor process.SmartContractResultProcessor,
	shardCoordinator sharding.Coordinator,
	accounts state.AccountsAdapter,
	onRequestSmartContractResult func(shardID uint32, txHashes [][]byte),
	gasHandler process.GasHandler,
	economicsFee process.FeeHandler,
	pubkeyConverter core.PubkeyConverter,
	blockSizeComputation BlockSizeComputationHandler,
	balanceComputation BalanceComputationHandler,
) (*smartContractResults, error)

NewSmartContractResultPreprocessor creates a new smartContractResult preprocessor object

func NewTransactionPreprocessor

func NewTransactionPreprocessor(
	txDataPool dataRetriever.ShardedDataCacherNotifier,
	store dataRetriever.StorageService,
	hasher hashing.Hasher,
	marshalizer marshal.Marshalizer,
	txProcessor process.TransactionProcessor,
	shardCoordinator sharding.Coordinator,
	accounts state.AccountsAdapter,
	onRequestTransaction func(shardID uint32, txHashes [][]byte),
	economicsFee process.FeeHandler,
	gasHandler process.GasHandler,
	blockTracker BlockTracker,
	blockType block.Type,
	pubkeyConverter core.PubkeyConverter,
	blockSizeComputation BlockSizeComputationHandler,
	balanceComputation BalanceComputationHandler,
) (*transactions, error)

NewTransactionPreprocessor creates a new transaction preprocessor object

func NewValidatorInfoPreprocessor

func NewValidatorInfoPreprocessor(
	hasher hashing.Hasher,
	marshalizer marshal.Marshalizer,
) (*validatorInfoPreprocessor, error)

NewValidatorInfoPreprocessor creates a new validatorInfo preprocessor object

func SortTransactionsBySenderAndNonce

func SortTransactionsBySenderAndNonce(transactions []*txcache.WrappedTransaction)

SortTransactionsBySenderAndNonce sorts the provided transactions and hashes simultaneously

Example

txs := []*txcache.WrappedTransaction{
	{Tx: &transaction.Transaction{Nonce: 3, SndAddr: []byte("bbbb")}, TxHash: []byte("w")},
	{Tx: &transaction.Transaction{Nonce: 1, SndAddr: []byte("aaaa")}, TxHash: []byte("x")},
	{Tx: &transaction.Transaction{Nonce: 5, SndAddr: []byte("bbbb")}, TxHash: []byte("y")},
	{Tx: &transaction.Transaction{Nonce: 2, SndAddr: []byte("aaaa")}, TxHash: []byte("z")},
	{Tx: &transaction.Transaction{Nonce: 7, SndAddr: []byte("aabb")}, TxHash: []byte("t")},
	{Tx: &transaction.Transaction{Nonce: 6, SndAddr: []byte("aabb")}, TxHash: []byte("a")},
	{Tx: &transaction.Transaction{Nonce: 3, SndAddr: []byte("ffff")}, TxHash: []byte("b")},
	{Tx: &transaction.Transaction{Nonce: 3, SndAddr: []byte("eeee")}, TxHash: []byte("c")},
}

SortTransactionsBySenderAndNonce(txs)

for _, item := range txs {
	fmt.Println(item.Tx.GetNonce(), string(item.Tx.GetSndAddr()), string(item.TxHash))
}

Output:

1 aaaa x
2 aaaa z
6 aabb a
7 aabb t
3 bbbb w
5 bbbb y
3 eeee c
3 ffff b

Types

type BalanceComputationHandler

type BalanceComputationHandler interface {
	Init()
	SetBalanceToAddress(address []byte, value *big.Int)
	AddBalanceToAddress(address []byte, value *big.Int) bool
	SubBalanceFromAddress(address []byte, value *big.Int) bool
	IsAddressSet(address []byte) bool
	AddressHasEnoughBalance(address []byte, value *big.Int) bool
	IsInterfaceNil() bool
}

BalanceComputationHandler defines the functionality for addresses balances computation, used in preventing executing too many debit transactions, after the proposer executed a credit transaction on the same account in the same block

type BlockSizeComputationHandler

type BlockSizeComputationHandler interface {
	Init()
	AddNumMiniBlocks(numMiniBlocks int)
	AddNumTxs(numTxs int)
	IsMaxBlockSizeReached(numNewMiniBlocks int, numNewTxs int) bool
	IsMaxBlockSizeWithoutThrottleReached(numNewMiniBlocks int, numNewTxs int) bool
	IsInterfaceNil() bool
}

BlockSizeComputationHandler defines the functionality for block size computation

type BlockSizeThrottler

type BlockSizeThrottler interface {
	GetCurrentMaxSize() uint32
	IsInterfaceNil() bool
}

BlockSizeThrottler defines the functionality of adapting the node to the network speed/latency when it should send a block to its peers which should be received in a limited time frame

type BlockTracker

type BlockTracker interface {
	IsShardStuck(shardID uint32) bool
	IsInterfaceNil() bool
}

BlockTracker defines the functionality for node to track the blocks which are received from network

type SortedTransactionsProvider

type SortedTransactionsProvider interface {
	GetSortedTransactions() []*txcache.WrappedTransaction
	NotifyAccountNonce(accountKey []byte, nonce uint64)
	IsInterfaceNil() bool
}

SortedTransactionsProvider defines the public API of the transactions cache

type TxCache

type TxCache interface {
	SelectTransactions(numRequested int, batchSizePerSender int) []*txcache.WrappedTransaction
	NotifyAccountNonce(accountKey []byte, nonce uint64)
	IsInterfaceNil() bool
}

TxCache defines the functionality for the transactions cache