func (blockchain *blockchain) persistRawBlock(block *protos.Block, blockNumber uint64) error {
blockBytes, blockBytesErr := block.Bytes()
if blockBytesErr != nil {
return blockBytesErr
}
writeBatch := gorocksdb.NewWriteBatch()
defer writeBatch.Destroy()
writeBatch.PutCF(db.GetDBHandle().BlockchainCF, encodeBlockNumberDBKey(blockNumber), blockBytes)
blockHash, err := block.GetHash()
if err != nil {
return err
}
// Need to check as we suport out of order blocks in cases such as block/state synchronization. This is
// really blockchain height, not size.
if blockchain.getSize() < blockNumber+1 {
sizeBytes := encodeUint64(blockNumber + 1)
writeBatch.PutCF(db.GetDBHandle().BlockchainCF, blockCountKey, sizeBytes)
blockchain.size = blockNumber + 1
blockchain.previousBlockHash = blockHash
}
if blockchain.indexer.isSynchronous() {
blockchain.indexer.createIndexesSync(block, blockNumber, blockHash, writeBatch)
}
opt := gorocksdb.NewDefaultWriteOptions()
defer opt.Destroy()
err = db.GetDBHandle().DB.Write(opt, writeBatch)
if err != nil {
return err
}
return nil
}
func (blockchain *blockchain) addPersistenceChangesForNewBlock(ctx context.Context,
block *protos.Block, stateHash []byte, writeBatch *gorocksdb.WriteBatch) (uint64, error) {
block = blockchain.buildBlock(block, stateHash)
if block.NonHashData == nil {
block.NonHashData = &protos.NonHashData{LocalLedgerCommitTimestamp: util.CreateUtcTimestamp()}
} else {
block.NonHashData.LocalLedgerCommitTimestamp = util.CreateUtcTimestamp()
}
blockNumber := blockchain.size
blockHash, err := block.GetHash()
if err != nil {
return 0, err
}
blockBytes, blockBytesErr := block.Bytes()
if blockBytesErr != nil {
return 0, blockBytesErr
}
writeBatch.PutCF(db.GetDBHandle().BlockchainCF, encodeBlockNumberDBKey(blockNumber), blockBytes)
writeBatch.PutCF(db.GetDBHandle().BlockchainCF, blockCountKey, encodeUint64(blockNumber+1))
if blockchain.indexer.isSynchronous() {
blockchain.indexer.createIndexesSync(block, blockNumber, blockHash, writeBatch)
}
blockchain.lastProcessedBlock = &lastProcessedBlock{block, blockNumber, blockHash}
return blockNumber, nil
}
func fetchDataNodesFromDBFor(bucketKey *bucketKey) (dataNodes, error) {
logger.Debug("Fetching from DB data nodes for bucket [%s]", bucketKey)
openchainDB := db.GetDBHandle()
itr := openchainDB.GetStateCFIterator()
defer itr.Close()
minimumDataKeyBytes := minimumPossibleDataKeyBytesFor(bucketKey)
var dataNodes dataNodes
itr.Seek(minimumDataKeyBytes)
for ; itr.Valid(); itr.Next() {
// making a copy of key-value bytes because, underlying key bytes are reused by itr.
// no need to free slices as iterator frees memory when closed.
keyBytes := statemgmt.Copy(itr.Key().Data())
valueBytes := statemgmt.Copy(itr.Value().Data())
dataKey := newDataKeyFromEncodedBytes(keyBytes)
logger.Debug("Retrieved data key [%s] from DB for bucket [%s]", dataKey, bucketKey)
if !dataKey.getBucketKey().equals(bucketKey) {
logger.Debug("Data key [%s] from DB does not belong to bucket = [%s]. Stopping further iteration and returning results [%v]", dataKey, bucketKey, dataNodes)
return dataNodes, nil
}
dataNode := unmarshalDataNode(dataKey, valueBytes)
logger.Debug("Data node [%s] from DB belongs to bucket = [%s]. Including the key in results...", dataNode, bucketKey)
dataNodes = append(dataNodes, dataNode)
}
logger.Debug("Returning results [%v]", dataNodes)
return dataNodes, nil
}
// AddChangesForPersistence commits current changes to the database
func (stateTrie *StateTrie) AddChangesForPersistence(writeBatch *gorocksdb.WriteBatch) error {
if stateTrie.recomputeCryptoHash {
_, err := stateTrie.ComputeCryptoHash()
if err != nil {
return err
}
}
if stateTrie.trieDelta == nil {
stateTrieLogger.Info("trieDelta is nil. Not writing anything to DB")
return nil
}
openchainDB := db.GetDBHandle()
lowestLevel := stateTrie.trieDelta.getLowestLevel()
for level := lowestLevel; level >= 0; level-- {
changedNodes := stateTrie.trieDelta.deltaMap[level]
for _, changedNode := range changedNodes {
if changedNode.markedForDeletion {
writeBatch.DeleteCF(openchainDB.StateCF, changedNode.trieKey.getEncodedBytes())
continue
}
serializedContent, err := changedNode.marshal()
if err != nil {
return err
}
writeBatch.PutCF(openchainDB.StateCF, changedNode.trieKey.getEncodedBytes(), serializedContent)
}
}
stateTrieLogger.Debug("Added changes to DB")
return nil
}
func TestDBStatsOversizedKV(t *testing.T) {
dbTestWrapper := db.NewTestDBWrapper()
dbTestWrapper.CleanDB(t)
defer dbTestWrapper.CloseDB(t)
defer deleteTestDBDir()
openchainDB := db.GetDBHandle()
writeBatch := gorocksdb.NewWriteBatch()
writeBatch.PutCF(openchainDB.BlockchainCF, []byte("key1"), []byte("value1"))
writeBatch.PutCF(openchainDB.BlockchainCF, []byte("key2"), generateOversizedValue(0))
writeBatch.PutCF(openchainDB.BlockchainCF, []byte("key3"), generateOversizedValue(100))
writeBatch.PutCF(openchainDB.BlockchainCF, []byte("key4"), []byte("value4"))
dbTestWrapper.WriteToDB(t, writeBatch)
totalKVs, numOverSizedKVs := scan(openchainDB, "blockchainCF", openchainDB.BlockchainCF, testDetailPrinter)
if totalKVs != 4 {
t.Fatalf("totalKVs is not correct. Expected [%d], found [%d]", 4, totalKVs)
}
if numOverSizedKVs != 2 {
t.Fatalf("numOverSizedKVs is not correct. Expected [%d], found [%d]", 2, numOverSizedKVs)
}
if numOversizedKeyValues != 2 {
t.Fatalf("numOversizedKeyValues is not correct. Expected [%d], found [%d]", 2, numOversizedKeyValues)
}
}
// Functions for persisting and retrieving index data
func addIndexDataForPersistence(block *protos.Block, blockNumber uint64, blockHash []byte, writeBatch *gorocksdb.WriteBatch) error {
openchainDB := db.GetDBHandle()
cf := openchainDB.IndexesCF
// add blockhash -> blockNumber
indexLogger.Debugf("Indexing block number [%d] by hash = [%x]", blockNumber, blockHash)
writeBatch.PutCF(cf, encodeBlockHashKey(blockHash), encodeBlockNumber(blockNumber))
addressToTxIndexesMap := make(map[string][]uint64)
addressToChaincodeIDsMap := make(map[string][]*protos.ChaincodeID)
transactions := block.GetTransactions()
for txIndex, tx := range transactions {
// add TxID -> (blockNumber,indexWithinBlock)
writeBatch.PutCF(cf, encodeTxIDKey(tx.Txid), encodeBlockNumTxIndex(blockNumber, uint64(txIndex)))
txExecutingAddress := getTxExecutingAddress(tx)
addressToTxIndexesMap[txExecutingAddress] = append(addressToTxIndexesMap[txExecutingAddress], uint64(txIndex))
switch tx.Type {
case protos.Transaction_CHAINCODE_DEPLOY, protos.Transaction_CHAINCODE_INVOKE:
authroizedAddresses, chaincodeID := getAuthorisedAddresses(tx)
for _, authroizedAddress := range authroizedAddresses {
addressToChaincodeIDsMap[authroizedAddress] = append(addressToChaincodeIDsMap[authroizedAddress], chaincodeID)
}
}
}
for address, txsIndexes := range addressToTxIndexesMap {
writeBatch.PutCF(cf, encodeAddressBlockNumCompositeKey(address, blockNumber), encodeListTxIndexes(txsIndexes))
}
return nil
}
func newStateSnapshotIterator(snapshot *gorocksdb.Snapshot) (*StateSnapshotIterator, error) {
dbItr := db.GetDBHandle().GetStateCFSnapshotIterator(snapshot)
dbItr.SeekToFirst()
// skip the root key, because, the value test in Next method is misleading for root key as the value field
dbItr.Next()
return &StateSnapshotIterator{dbItr, nil, nil}, nil
}
func (cache *bucketCache) loadAllBucketNodesFromDB() {
if !cache.isEnabled {
return
}
openchainDB := db.GetDBHandle()
itr := openchainDB.GetStateCFIterator()
defer itr.Close()
itr.Seek([]byte{byte(0)})
count := 0
cache.lock.Lock()
defer cache.lock.Unlock()
for ; itr.Valid(); itr.Next() {
key := itr.Key().Data()
if key[0] != byte(0) {
itr.Key().Free()
itr.Value().Free()
break
}
bKey := decodeBucketKey(statemgmt.Copy(itr.Key().Data()))
nodeBytes := statemgmt.Copy(itr.Value().Data())
bucketNode := unmarshalBucketNode(&bKey, nodeBytes)
size := bKey.size() + bucketNode.size()
cache.size += size
if cache.size >= cache.maxSize {
cache.size -= size
break
}
cache.c[bKey] = bucketNode
itr.Key().Free()
itr.Value().Free()
count++
}
logger.Info("Loaded buckets data in cache. Total buckets in DB = [%d]. Total cache size:=%d", count, cache.size)
}
func TestStateSnapshotIterator(t *testing.T) {
testDBWrapper.CreateFreshDB(t)
stateTrieTestWrapper := newStateTrieTestWrapper(t)
stateTrie := stateTrieTestWrapper.stateTrie
stateDelta := statemgmt.NewStateDelta()
// insert keys
stateDelta.Set("chaincodeID1", "key1", []byte("value1"), nil)
stateDelta.Set("chaincodeID2", "key2", []byte("value2"), nil)
stateDelta.Set("chaincodeID3", "key3", []byte("value3"), nil)
stateDelta.Set("chaincodeID4", "key4", []byte("value4"), nil)
stateDelta.Set("chaincodeID5", "key5", []byte("value5"), nil)
stateDelta.Set("chaincodeID6", "key6", []byte("value6"), nil)
stateTrie.PrepareWorkingSet(stateDelta)
stateTrieTestWrapper.PersistChangesAndResetInMemoryChanges()
//check that the key is persisted
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID1", "key1"), []byte("value1"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID2", "key2"), []byte("value2"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID3", "key3"), []byte("value3"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID4", "key4"), []byte("value4"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID5", "key5"), []byte("value5"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID6", "key6"), []byte("value6"))
// take db snapeshot
dbSnapshot := db.GetDBHandle().GetSnapshot()
stateDelta1 := statemgmt.NewStateDelta()
// delete a few keys
stateDelta1.Delete("chaincodeID1", "key1", nil)
stateDelta1.Delete("chaincodeID3", "key3", nil)
stateDelta1.Delete("chaincodeID4", "key4", nil)
stateDelta1.Delete("chaincodeID6", "key6", nil)
// update remaining keys
stateDelta1.Set("chaincodeID2", "key2", []byte("value2_new"), nil)
stateDelta1.Set("chaincodeID5", "key5", []byte("value5_new"), nil)
stateTrie.PrepareWorkingSet(stateDelta1)
stateTrieTestWrapper.PersistChangesAndResetInMemoryChanges()
//check that the keys are updated
testutil.AssertNil(t, stateTrieTestWrapper.Get("chaincodeID1", "key1"))
testutil.AssertNil(t, stateTrieTestWrapper.Get("chaincodeID3", "key3"))
testutil.AssertNil(t, stateTrieTestWrapper.Get("chaincodeID4", "key4"))
testutil.AssertNil(t, stateTrieTestWrapper.Get("chaincodeID6", "key6"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID2", "key2"), []byte("value2_new"))
testutil.AssertEquals(t, stateTrieTestWrapper.Get("chaincodeID5", "key5"), []byte("value5_new"))
itr, err := newStateSnapshotIterator(dbSnapshot)
testutil.AssertNoError(t, err, "Error while getting state snapeshot iterator")
stateDeltaFromSnapshot := statemgmt.NewStateDelta()
for itr.Next() {
keyBytes, valueBytes := itr.GetRawKeyValue()
t.Logf("key=[%s], value=[%s]", string(keyBytes), string(valueBytes))
chaincodeID, key := statemgmt.DecodeCompositeKey(keyBytes)
stateDeltaFromSnapshot.Set(chaincodeID, key, valueBytes, nil)
}
testutil.AssertEquals(t, stateDelta, stateDeltaFromSnapshot)
}
// DeleteState deletes ALL state keys/values from the DB. This is generally
// only used during state synchronization when creating a new state from
// a snapshot.
func (state *State) DeleteState() error {
state.ClearInMemoryChanges(false)
err := db.GetDBHandle().DeleteState()
if err != nil {
logger.Errorf("Error deleting state: %s", err)
}
return err
}
func fetchBlockNumberByBlockHashFromDB(blockHash []byte) (uint64, error) {
blockNumberBytes, err := db.GetDBHandle().GetFromIndexesCF(encodeBlockHashKey(blockHash))
if err != nil {
return 0, err
}
blockNumber := decodeBlockNumber(blockNumberBytes)
return blockNumber, nil
}
func fetchTransactionIndexByIDFromDB(txID string) (uint64, uint64, error) {
blockNumTxIndexBytes, err := db.GetDBHandle().GetFromIndexesCF(encodeTxIDKey(txID))
if err != nil {
return 0, 0, err
}
if blockNumTxIndexBytes == nil {
return 0, 0, ErrResourceNotFound
}
return decodeBlockNumTxIndex(blockNumTxIndexBytes)
}
func fetchBlockFromDB(blockNumber uint64) (*protos.Block, error) {
blockBytes, err := db.GetDBHandle().GetFromBlockchainCF(encodeBlockNumberDBKey(blockNumber))
if err != nil {
return nil, err
}
if blockBytes == nil {
return nil, nil
}
return protos.UnmarshallBlock(blockBytes)
}
func fetchBlockchainSizeFromDB() (uint64, error) {
bytes, err := db.GetDBHandle().GetFromBlockchainCF(blockCountKey)
if err != nil {
return 0, err
}
if bytes == nil {
return 0, nil
}
return decodeToUint64(bytes), nil
}
func newRangeScanIterator(chaincodeID string, startKey string, endKey string) (*RangeScanIterator, error) {
dbItr := db.GetDBHandle().GetStateCFIterator()
itr := &RangeScanIterator{
dbItr: dbItr,
chaincodeID: chaincodeID,
startKey: startKey,
endKey: endKey,
}
itr.seekForStartKeyWithinBucket(1)
return itr, nil
}
func fetchDataNodeFromDB(dataKey *dataKey) (*dataNode, error) {
openchainDB := db.GetDBHandle()
nodeBytes, err := openchainDB.GetFromStateCF(dataKey.getEncodedBytes())
if err != nil {
return nil, err
}
if util.IsNil(nodeBytes) {
return nil, nil
}
return unmarshalDataNode(dataKey, nodeBytes), nil
}
func fetchBlockchainSizeFromSnapshot(snapshot *gorocksdb.Snapshot) (uint64, error) {
blockNumberBytes, err := db.GetDBHandle().GetFromBlockchainCFSnapshot(snapshot, blockCountKey)
if err != nil {
return 0, err
}
var blockNumber uint64
if blockNumberBytes != nil {
blockNumber = decodeToUint64(blockNumberBytes)
}
return blockNumber, nil
}
func fetchBucketNodeFromDB(bucketKey *bucketKey) (*bucketNode, error) {
openchainDB := db.GetDBHandle()
nodeBytes, err := openchainDB.GetFromStateCF(bucketKey.getEncodedBytes())
if err != nil {
return nil, err
}
if nodeBytes == nil {
return nil, nil
}
return unmarshalBucketNode(bucketKey, nodeBytes), nil
}
// FetchStateDeltaFromDB fetches the StateDelta corrsponding to given blockNumber
func (state *State) FetchStateDeltaFromDB(blockNumber uint64) (*statemgmt.StateDelta, error) {
stateDeltaBytes, err := db.GetDBHandle().GetFromStateDeltaCF(encodeStateDeltaKey(blockNumber))
if err != nil {
return nil, err
}
if stateDeltaBytes == nil {
return nil, nil
}
stateDelta := statemgmt.NewStateDelta()
stateDelta.Unmarshal(stateDeltaBytes)
return stateDelta, nil
}
func fetchLastIndexedBlockNumFromDB() (zerothBlockIndexed bool, lastIndexedBlockNum uint64, err error) {
lastIndexedBlockNumberBytes, err := db.GetDBHandle().GetFromIndexesCF(lastIndexedBlockKey)
if err != nil {
return
}
if lastIndexedBlockNumberBytes == nil {
return
}
lastIndexedBlockNum = decodeBlockNumber(lastIndexedBlockNumberBytes)
zerothBlockIndexed = true
return
}
// CommitStateDelta commits the changes from state.ApplyStateDelta to the
// DB.
func (state *State) CommitStateDelta() error {
if state.updateStateImpl {
state.stateImpl.PrepareWorkingSet(state.stateDelta)
state.updateStateImpl = false
}
writeBatch := gorocksdb.NewWriteBatch()
defer writeBatch.Destroy()
state.stateImpl.AddChangesForPersistence(writeBatch)
opt := gorocksdb.NewDefaultWriteOptions()
defer opt.Destroy()
return db.GetDBHandle().DB.Write(opt, writeBatch)
}
func fetchBlockNumberByBlockHashFromDB(blockHash []byte) (uint64, error) {
indexLogger.Debugf("fetchBlockNumberByBlockHashFromDB() for blockhash [%x]", blockHash)
blockNumberBytes, err := db.GetDBHandle().GetFromIndexesCF(encodeBlockHashKey(blockHash))
if err != nil {
return 0, err
}
indexLogger.Debugf("blockNumberBytes for blockhash [%x] is [%x]", blockHash, blockNumberBytes)
if len(blockNumberBytes) == 0 {
return 0, newLedgerError(ErrorTypeBlockNotFound, fmt.Sprintf("No block indexed with block hash [%x]", blockHash))
}
blockNumber := decodeBlockNumber(blockNumberBytes)
return blockNumber, nil
}
// GetStateSnapshot returns a point-in-time view of the global state for the current block. This
// should be used when transferring the state from one peer to another peer. You must call
// stateSnapshot.Release() once you are done with the snapshot to free up resources.
func (ledger *Ledger) GetStateSnapshot() (*state.StateSnapshot, error) {
dbSnapshot := db.GetDBHandle().GetSnapshot()
blockHeight, err := fetchBlockchainSizeFromSnapshot(dbSnapshot)
if err != nil {
dbSnapshot.Release()
return nil, err
}
if 0 == blockHeight {
dbSnapshot.Release()
return nil, fmt.Errorf("Blockchain has no blocks, cannot determine block number")
}
return ledger.state.GetSnapshot(blockHeight-1, dbSnapshot)
}
func (stateImpl *StateImpl) addDataNodeChangesForPersistence(writeBatch *gorocksdb.WriteBatch) {
openchainDB := db.GetDBHandle()
affectedBuckets := stateImpl.dataNodesDelta.getAffectedBuckets()
for _, affectedBucket := range affectedBuckets {
dataNodes := stateImpl.dataNodesDelta.getSortedDataNodesFor(affectedBucket)
for _, dataNode := range dataNodes {
if dataNode.isDelete() {
writeBatch.DeleteCF(openchainDB.StateCF, dataNode.dataKey.getEncodedBytes())
} else {
writeBatch.PutCF(openchainDB.StateCF, dataNode.dataKey.getEncodedBytes(), dataNode.value)
}
}
}
}
func (stateImpl *StateImpl) addBucketNodeChangesForPersistence(writeBatch *gorocksdb.WriteBatch) {
openchainDB := db.GetDBHandle()
secondLastLevel := conf.getLowestLevel() - 1
for level := secondLastLevel; level >= 0; level-- {
bucketNodes := stateImpl.bucketTreeDelta.getBucketNodesAt(level)
for _, bucketNode := range bucketNodes {
if bucketNode.markedForDeletion {
writeBatch.DeleteCF(openchainDB.StateCF, bucketNode.bucketKey.getEncodedBytes())
} else {
writeBatch.PutCF(openchainDB.StateCF, bucketNode.bucketKey.getEncodedBytes(), bucketNode.marshal())
}
}
}
}
// createIndexes adds entries into db for creating indexes on various attributes
func (indexer *blockchainIndexerAsync) createIndexesInternal(block *protos.Block, blockNumber uint64, blockHash []byte) error {
openchainDB := db.GetDBHandle()
writeBatch := gorocksdb.NewWriteBatch()
defer writeBatch.Destroy()
addIndexDataForPersistence(block, blockNumber, blockHash, writeBatch)
writeBatch.PutCF(openchainDB.IndexesCF, lastIndexedBlockKey, encodeBlockNumber(blockNumber))
opt := gorocksdb.NewDefaultWriteOptions()
defer opt.Destroy()
err := openchainDB.DB.Write(opt, writeBatch)
if err != nil {
return err
}
indexer.indexerState.blockIndexed(blockNumber)
return nil
}
// ReadStateSet retrieves all key,value pairs where the key starts with prefix
func (h *Helper) ReadStateSet(prefix string) (map[string][]byte, error) {
db := db.GetDBHandle()
prefixRaw := []byte("consensus." + prefix)
ret := make(map[string][]byte)
it := db.GetIterator(db.PersistCF)
defer it.Close()
for it.Seek(prefixRaw); it.ValidForPrefix(prefixRaw); it.Next() {
key := string(it.Key().Data())
key = key[len("consensus."):]
// copy data from the slice!
ret[key] = append([]byte(nil), it.Value().Data()...)
}
return ret, nil
}
func fetchDataNodeFromDB(dataKey *dataKey) (*dataNode, error) {
openchainDB := db.GetDBHandle()
nodeBytes, err := openchainDB.GetFromStateCF(dataKey.getEncodedBytes())
if err != nil {
return nil, err
}
if nodeBytes == nil {
logger.Debug("nodeBytes from db is nil")
} else if len(nodeBytes) == 0 {
logger.Debug("nodeBytes from db is an empty array")
}
// key does not exist
if nodeBytes == nil {
return nil, nil
}
return unmarshalDataNode(dataKey, nodeBytes), nil
}
func TestStateSnapshotIterator(t *testing.T) {
testDBWrapper.CleanDB(t)
stateImplTestWrapper := newStateImplTestWrapper(t)
stateDelta := statemgmt.NewStateDelta()
// insert keys
stateDelta.Set("chaincodeID1", "key1", []byte("value1"), nil)
stateDelta.Set("chaincodeID2", "key2", []byte("value2"), nil)
stateDelta.Set("chaincodeID3", "key3", []byte("value3"), nil)
stateDelta.Set("chaincodeID4", "key4", []byte("value4"), nil)
stateDelta.Set("chaincodeID5", "key5", []byte("value5"), nil)
stateDelta.Set("chaincodeID6", "key6", []byte("value6"), nil)
stateImplTestWrapper.prepareWorkingSet(stateDelta)
stateImplTestWrapper.persistChangesAndResetInMemoryChanges()
//check that the key is persisted
testutil.AssertEquals(t, stateImplTestWrapper.get("chaincodeID5", "key5"), []byte("value5"))
// take db snapeshot
dbSnapshot := db.GetDBHandle().GetSnapshot()
// delete keys
stateDelta.Delete("chaincodeID1", "key1", nil)
stateDelta.Delete("chaincodeID2", "key2", nil)
stateDelta.Delete("chaincodeID3", "key3", nil)
stateDelta.Delete("chaincodeID4", "key4", nil)
stateDelta.Delete("chaincodeID5", "key5", nil)
stateDelta.Delete("chaincodeID6", "key6", nil)
stateImplTestWrapper.prepareWorkingSet(stateDelta)
stateImplTestWrapper.persistChangesAndResetInMemoryChanges()
//check that the key is deleted
testutil.AssertNil(t, stateImplTestWrapper.get("chaincodeID5", "key5"))
itr, err := newStateSnapshotIterator(dbSnapshot)
testutil.AssertNoError(t, err, "Error while getting state snapeshot iterator")
numKeys := 0
for itr.Next() {
key, value := itr.GetRawKeyValue()
t.Logf("key=[%s], value=[%s]", string(key), string(value))
numKeys++
}
testutil.AssertEquals(t, numKeys, 6)
}
// CommitTxBatch - gets invoked when the current transaction-batch needs to be committed
// This function returns successfully iff the transactions details and state changes (that
// may have happened during execution of this transaction-batch) have been committed to permanent storage
func (ledger *Ledger) CommitTxBatch(id interface{}, transactions []*protos.Transaction, transactionResults []*protos.TransactionResult, metadata []byte) error {
err := ledger.checkValidIDCommitORRollback(id)
if err != nil {
return err
}
stateHash, err := ledger.state.GetHash()
if err != nil {
ledger.resetForNextTxGroup(false)
ledger.blockchain.blockPersistenceStatus(false)
return err
}
writeBatch := gorocksdb.NewWriteBatch()
defer writeBatch.Destroy()
block := protos.NewBlock(transactions, metadata)
block.NonHashData = &protos.NonHashData{}
newBlockNumber, err := ledger.blockchain.addPersistenceChangesForNewBlock(context.TODO(), block, stateHash, writeBatch)
if err != nil {
ledger.resetForNextTxGroup(false)
ledger.blockchain.blockPersistenceStatus(false)
return err
}
ledger.state.AddChangesForPersistence(newBlockNumber, writeBatch)
opt := gorocksdb.NewDefaultWriteOptions()
defer opt.Destroy()
dbErr := db.GetDBHandle().DB.Write(opt, writeBatch)
if dbErr != nil {
ledger.resetForNextTxGroup(false)
ledger.blockchain.blockPersistenceStatus(false)
return dbErr
}
ledger.resetForNextTxGroup(true)
ledger.blockchain.blockPersistenceStatus(true)
sendProducerBlockEvent(block)
if len(transactionResults) != 0 {
ledgerLogger.Debug("There were some erroneous transactions. We need to send a 'TX rejected' message here.")
}
return nil
}