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rewardTxPreProcessor.go
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rewardTxPreProcessor.go
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package preprocess
import (
"time"
"github.com/ElrondNetwork/elrond-go/core"
"github.com/ElrondNetwork/elrond-go/core/check"
"github.com/ElrondNetwork/elrond-go/core/sliceUtil"
"github.com/ElrondNetwork/elrond-go/data"
"github.com/ElrondNetwork/elrond-go/data/block"
"github.com/ElrondNetwork/elrond-go/data/rewardTx"
"github.com/ElrondNetwork/elrond-go/data/state"
"github.com/ElrondNetwork/elrond-go/dataRetriever"
"github.com/ElrondNetwork/elrond-go/hashing"
"github.com/ElrondNetwork/elrond-go/marshal"
"github.com/ElrondNetwork/elrond-go/process"
"github.com/ElrondNetwork/elrond-go/sharding"
"github.com/ElrondNetwork/elrond-go/storage"
)
var _ process.DataMarshalizer = (*rewardTxPreprocessor)(nil)
var _ process.PreProcessor = (*rewardTxPreprocessor)(nil)
type rewardTxPreprocessor struct {
*basePreProcess
chReceivedAllRewardTxs chan bool
onRequestRewardTx func(shardID uint32, txHashes [][]byte)
rewardTxsForBlock txsForBlock
rewardTxPool dataRetriever.ShardedDataCacherNotifier
storage dataRetriever.StorageService
rewardsProcessor process.RewardTransactionProcessor
}
// NewRewardTxPreprocessor creates a new reward transaction preprocessor object
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 state.PubkeyConverter,
blockSizeComputation BlockSizeComputationHandler,
balanceComputation BalanceComputationHandler,
) (*rewardTxPreprocessor, error) {
if check.IfNil(hasher) {
return nil, process.ErrNilHasher
}
if check.IfNil(marshalizer) {
return nil, process.ErrNilMarshalizer
}
if check.IfNil(rewardTxDataPool) {
return nil, process.ErrNilRewardTxDataPool
}
if check.IfNil(store) {
return nil, process.ErrNilStorage
}
if check.IfNil(rewardProcessor) {
return nil, process.ErrNilRewardsTxProcessor
}
if check.IfNil(shardCoordinator) {
return nil, process.ErrNilShardCoordinator
}
if check.IfNil(accounts) {
return nil, process.ErrNilAccountsAdapter
}
if onRequestRewardTransaction == nil {
return nil, process.ErrNilRequestHandler
}
if check.IfNil(gasHandler) {
return nil, process.ErrNilGasHandler
}
if check.IfNil(pubkeyConverter) {
return nil, process.ErrNilPubkeyConverter
}
if check.IfNil(blockSizeComputation) {
return nil, process.ErrNilBlockSizeComputationHandler
}
if check.IfNil(balanceComputation) {
return nil, process.ErrNilBalanceComputationHandler
}
bpp := &basePreProcess{
hasher: hasher,
marshalizer: marshalizer,
shardCoordinator: shardCoordinator,
gasHandler: gasHandler,
blockSizeComputation: blockSizeComputation,
balanceComputation: balanceComputation,
accounts: accounts,
pubkeyConverter: pubkeyConverter,
}
rtp := &rewardTxPreprocessor{
basePreProcess: bpp,
storage: store,
rewardTxPool: rewardTxDataPool,
onRequestRewardTx: onRequestRewardTransaction,
rewardsProcessor: rewardProcessor,
}
rtp.chReceivedAllRewardTxs = make(chan bool)
rtp.rewardTxPool.RegisterHandler(rtp.receivedRewardTransaction)
rtp.rewardTxsForBlock.txHashAndInfo = make(map[string]*txInfo)
return rtp, nil
}
// waitForRewardTxHashes waits for a call whether all the requested smartContractResults appeared
func (rtp *rewardTxPreprocessor) waitForRewardTxHashes(waitTime time.Duration) error {
select {
case <-rtp.chReceivedAllRewardTxs:
return nil
case <-time.After(waitTime):
return process.ErrTimeIsOut
}
}
// IsDataPrepared returns non error if all the requested reward transactions arrived and were saved into the pool
func (rtp *rewardTxPreprocessor) IsDataPrepared(requestedRewardTxs int, haveTime func() time.Duration) error {
if requestedRewardTxs > 0 {
log.Debug("requested missing reward txs",
"num reward txs", requestedRewardTxs)
err := rtp.waitForRewardTxHashes(haveTime())
rtp.rewardTxsForBlock.mutTxsForBlock.Lock()
missingRewardTxs := rtp.rewardTxsForBlock.missingTxs
rtp.rewardTxsForBlock.missingTxs = 0
rtp.rewardTxsForBlock.mutTxsForBlock.Unlock()
log.Debug("received reward txs",
"num reward txs", requestedRewardTxs-missingRewardTxs)
if err != nil {
return err
}
}
return nil
}
// RemoveTxBlockFromPools removes reward transactions and miniblocks from associated pools
func (rtp *rewardTxPreprocessor) RemoveTxBlockFromPools(body *block.Body, miniBlockPool storage.Cacher) error {
return rtp.removeDataFromPools(body, miniBlockPool, rtp.rewardTxPool, rtp.isMiniBlockCorrect)
}
// RestoreTxBlockIntoPools restores the reward transactions and miniblocks to associated pools
func (rtp *rewardTxPreprocessor) RestoreTxBlockIntoPools(
body *block.Body,
miniBlockPool storage.Cacher,
) (int, error) {
if check.IfNil(body) {
return 0, process.ErrNilBlockBody
}
if check.IfNil(miniBlockPool) {
return 0, process.ErrNilMiniBlockPool
}
rewardTxsRestored := 0
for i := 0; i < len(body.MiniBlocks); i++ {
miniBlock := body.MiniBlocks[i]
if miniBlock.Type != block.RewardsBlock {
continue
}
strCache := process.ShardCacherIdentifier(miniBlock.SenderShardID, miniBlock.ReceiverShardID)
rewardTxBuff, err := rtp.storage.GetAll(dataRetriever.RewardTransactionUnit, miniBlock.TxHashes)
if err != nil {
log.Debug("reward tx from mini block was not found in RewardTransactionUnit",
"sender shard ID", miniBlock.SenderShardID,
"receiver shard ID", miniBlock.ReceiverShardID,
"num txs", len(miniBlock.TxHashes),
)
return rewardTxsRestored, err
}
for txHash, txBuff := range rewardTxBuff {
tx := rewardTx.RewardTx{}
err = rtp.marshalizer.Unmarshal(&tx, txBuff)
if err != nil {
return rewardTxsRestored, err
}
rtp.rewardTxPool.AddData([]byte(txHash), &tx, strCache)
}
miniBlockHash, err := core.CalculateHash(rtp.marshalizer, rtp.hasher, miniBlock)
if err != nil {
return rewardTxsRestored, err
}
miniBlockPool.Put(miniBlockHash, miniBlock)
rewardTxsRestored += len(miniBlock.TxHashes)
}
return rewardTxsRestored, nil
}
// ProcessBlockTransactions processes all the reward transactions from the block.Body, updates the state
func (rtp *rewardTxPreprocessor) ProcessBlockTransactions(
body *block.Body,
haveTime func() bool,
) error {
if check.IfNil(body) {
return process.ErrNilBlockBody
}
for i := 0; i < len(body.MiniBlocks); i++ {
miniBlock := body.MiniBlocks[i]
if miniBlock.Type != block.RewardsBlock {
continue
}
for j := 0; j < len(miniBlock.TxHashes); j++ {
if !haveTime() {
return process.ErrTimeIsOut
}
txHash := miniBlock.TxHashes[j]
rtp.rewardTxsForBlock.mutTxsForBlock.RLock()
txData, ok := rtp.rewardTxsForBlock.txHashAndInfo[string(txHash)]
rtp.rewardTxsForBlock.mutTxsForBlock.RUnlock()
if !ok || check.IfNil(txData.tx) {
log.Warn("missing rewardsTransaction in ProcessBlockTransactions ", "type", miniBlock.Type, "hash", txHash)
return process.ErrMissingTransaction
}
rTx, ok := txData.tx.(*rewardTx.RewardTx)
if !ok {
return process.ErrWrongTypeAssertion
}
rtp.saveAccountBalanceForAddress(rTx.GetRcvAddr())
err := rtp.rewardsProcessor.ProcessRewardTransaction(rTx)
if err != nil {
return err
}
}
}
return nil
}
// SaveTxBlockToStorage saves the reward transactions from body into storage
func (rtp *rewardTxPreprocessor) SaveTxBlockToStorage(body *block.Body) error {
if check.IfNil(body) {
return process.ErrNilBlockBody
}
for i := 0; i < len(body.MiniBlocks); i++ {
miniBlock := body.MiniBlocks[i]
if miniBlock.Type != block.RewardsBlock {
continue
}
err := rtp.saveTxsToStorage(
miniBlock.TxHashes,
&rtp.rewardTxsForBlock,
rtp.storage,
dataRetriever.RewardTransactionUnit,
)
if err != nil {
return err
}
}
return nil
}
// receivedRewardTransaction is a callback function called when a new reward transaction
// is added in the reward transactions pool
func (rtp *rewardTxPreprocessor) receivedRewardTransaction(key []byte, value interface{}) {
tx, ok := value.(data.TransactionHandler)
if !ok {
log.Warn("rewardTxPreprocessor.receivedRewardTransaction", "error", process.ErrWrongTypeAssertion)
return
}
receivedAllMissing := rtp.baseReceivedTransaction(key, tx, &rtp.rewardTxsForBlock)
if receivedAllMissing {
rtp.chReceivedAllRewardTxs <- true
}
}
// CreateBlockStarted cleans the local cache map for processed/created reward transactions at this round
func (rtp *rewardTxPreprocessor) CreateBlockStarted() {
_ = core.EmptyChannel(rtp.chReceivedAllRewardTxs)
rtp.rewardTxsForBlock.mutTxsForBlock.Lock()
rtp.rewardTxsForBlock.missingTxs = 0
rtp.rewardTxsForBlock.txHashAndInfo = make(map[string]*txInfo)
rtp.rewardTxsForBlock.mutTxsForBlock.Unlock()
}
// RequestBlockTransactions request for reward transactions if missing from a block.Body
func (rtp *rewardTxPreprocessor) RequestBlockTransactions(body *block.Body) int {
if check.IfNil(body) {
return 0
}
return rtp.computeExistingAndRequestMissingRewardTxsForShards(body)
}
// computeExistingAndRequestMissingRewardTxsForShards calculates what reward transactions are available and requests
// what are missing from block.Body
func (rtp *rewardTxPreprocessor) computeExistingAndRequestMissingRewardTxsForShards(body *block.Body) int {
rewardTxs := block.Body{}
for _, mb := range body.MiniBlocks {
if mb.Type != block.RewardsBlock {
continue
}
if mb.SenderShardID != core.MetachainShardId {
continue
}
rewardTxs.MiniBlocks = append(rewardTxs.MiniBlocks, mb)
}
numMissingTxsForShards := rtp.computeExistingAndRequestMissing(
&rewardTxs,
&rtp.rewardTxsForBlock,
rtp.chReceivedAllRewardTxs,
rtp.isMiniBlockCorrect,
rtp.rewardTxPool,
rtp.onRequestRewardTx,
)
return numMissingTxsForShards
}
// RequestTransactionsForMiniBlock requests missing reward transactions for a certain miniblock
func (rtp *rewardTxPreprocessor) RequestTransactionsForMiniBlock(miniBlock *block.MiniBlock) int {
if miniBlock == nil {
return 0
}
missingRewardTxsForMiniBlock := rtp.computeMissingRewardTxsForMiniBlock(miniBlock)
if len(missingRewardTxsForMiniBlock) > 0 {
rtp.onRequestRewardTx(miniBlock.SenderShardID, missingRewardTxsForMiniBlock)
}
return len(missingRewardTxsForMiniBlock)
}
// computeMissingRewardTxsForMiniBlock computes missing reward transactions for a certain miniblock
func (rtp *rewardTxPreprocessor) computeMissingRewardTxsForMiniBlock(miniBlock *block.MiniBlock) [][]byte {
missingRewardTxs := make([][]byte, 0, len(miniBlock.TxHashes))
if miniBlock.Type != block.RewardsBlock {
return missingRewardTxs
}
for _, txHash := range miniBlock.TxHashes {
tx, _ := process.GetTransactionHandlerFromPool(
miniBlock.SenderShardID,
miniBlock.ReceiverShardID,
txHash,
rtp.rewardTxPool,
false,
)
if tx == nil {
missingRewardTxs = append(missingRewardTxs, txHash)
}
}
return sliceUtil.TrimSliceSliceByte(missingRewardTxs)
}
// getAllRewardTxsFromMiniBlock gets all the reward transactions from a miniblock into a new structure
func (rtp *rewardTxPreprocessor) getAllRewardTxsFromMiniBlock(
mb *block.MiniBlock,
haveTime func() bool,
) ([]*rewardTx.RewardTx, [][]byte, error) {
strCache := process.ShardCacherIdentifier(mb.SenderShardID, mb.ReceiverShardID)
txCache := rtp.rewardTxPool.ShardDataStore(strCache)
if txCache == nil {
return nil, nil, process.ErrNilRewardTxDataPool
}
// verify if all reward transactions exists
rewardTxs := make([]*rewardTx.RewardTx, len(mb.TxHashes))
txHashes := make([][]byte, len(mb.TxHashes))
for idx, txHash := range mb.TxHashes {
if !haveTime() {
return nil, nil, process.ErrTimeIsOut
}
tmp, ok := txCache.Peek(txHash)
if !ok {
return nil, nil, process.ErrNilRewardTransaction
}
tx, ok := tmp.(*rewardTx.RewardTx)
if !ok {
return nil, nil, process.ErrWrongTypeAssertion
}
txHashes[idx] = txHash
rewardTxs[idx] = tx
}
return rewardTxs, txHashes, nil
}
// CreateAndProcessMiniBlocks creates miniblocks from storage and processes the reward transactions added into the miniblocks
// as long as it has time
func (rtp *rewardTxPreprocessor) CreateAndProcessMiniBlocks(
_ func() bool,
) (block.MiniBlockSlice, error) {
// rewards are created only by meta
return make(block.MiniBlockSlice, 0), nil
}
// ProcessMiniBlock processes all the reward transactions from a miniblock and saves the processed reward transactions
// in local cache
func (rtp *rewardTxPreprocessor) ProcessMiniBlock(miniBlock *block.MiniBlock, haveTime func() bool) ([][]byte, error) {
if miniBlock.Type != block.RewardsBlock {
return nil, process.ErrWrongTypeInMiniBlock
}
if miniBlock.SenderShardID != core.MetachainShardId {
return nil, process.ErrRewardMiniBlockNotFromMeta
}
miniBlockRewardTxs, miniBlockTxHashes, err := rtp.getAllRewardTxsFromMiniBlock(miniBlock, haveTime)
if err != nil {
return nil, err
}
if rtp.blockSizeComputation.IsMaxBlockSizeWithoutThrottleReached(1, len(miniBlockRewardTxs)) {
return nil, process.ErrMaxBlockSizeReached
}
processedTxHashes := make([][]byte, 0)
for index := range miniBlockRewardTxs {
if !haveTime() {
return processedTxHashes, process.ErrTimeIsOut
}
rtp.saveAccountBalanceForAddress(miniBlockRewardTxs[index].GetRcvAddr())
err = rtp.rewardsProcessor.ProcessRewardTransaction(miniBlockRewardTxs[index])
if err != nil {
return processedTxHashes, err
}
processedTxHashes = append(processedTxHashes, miniBlockTxHashes[index])
}
txShardData := &txShardInfo{senderShardID: miniBlock.SenderShardID, receiverShardID: miniBlock.ReceiverShardID}
rtp.rewardTxsForBlock.mutTxsForBlock.Lock()
for index, txHash := range miniBlockTxHashes {
rtp.rewardTxsForBlock.txHashAndInfo[string(txHash)] = &txInfo{tx: miniBlockRewardTxs[index], txShardInfo: txShardData}
}
rtp.rewardTxsForBlock.mutTxsForBlock.Unlock()
rtp.blockSizeComputation.AddNumMiniBlocks(1)
rtp.blockSizeComputation.AddNumTxs(len(miniBlockRewardTxs))
return nil, nil
}
// CreateMarshalizedData marshalizes reward transaction hashes and and saves them into a new structure
func (rtp *rewardTxPreprocessor) CreateMarshalizedData(txHashes [][]byte) ([][]byte, error) {
marshaledRewardTxs, err := rtp.createMarshalizedData(txHashes, &rtp.rewardTxsForBlock)
if err != nil {
return nil, err
}
return marshaledRewardTxs, nil
}
// GetAllCurrentUsedTxs returns all the reward transactions used at current creation / processing
func (rtp *rewardTxPreprocessor) GetAllCurrentUsedTxs() map[string]data.TransactionHandler {
rtp.rewardTxsForBlock.mutTxsForBlock.RLock()
rewardTxPool := make(map[string]data.TransactionHandler, len(rtp.rewardTxsForBlock.txHashAndInfo))
for txHash, txData := range rtp.rewardTxsForBlock.txHashAndInfo {
rewardTxPool[txHash] = txData.tx
}
rtp.rewardTxsForBlock.mutTxsForBlock.RUnlock()
return rewardTxPool
}
// IsInterfaceNil returns true if there is no value under the interface
func (rtp *rewardTxPreprocessor) IsInterfaceNil() bool {
return rtp == nil
}
func (rtp *rewardTxPreprocessor) isMiniBlockCorrect(mbType block.Type) bool {
return mbType == block.RewardsBlock
}