func newDataKey(chaincodeID string, key string) *dataKey {
logger.Debug("Enter - newDataKey. chaincodeID=[%s], key=[%s]", chaincodeID, key)
compositeKey := statemgmt.ConstructCompositeKey(chaincodeID, key)
bucketHash := conf.computeBucketHash(compositeKey)
// Adding one because - we start bucket-numbers 1 onwards
bucketNumber := int(bucketHash)%conf.getNumBucketsAtLowestLevel() + 1
dataKey := &dataKey{newBucketKeyAtLowestLevel(bucketNumber), compositeKey}
logger.Debug("Exit - newDataKey=[%s]", dataKey)
return dataKey
}
// AddChangesForPersistence - method implementation for interface 'statemgmt.HashableState'
func (impl *StateImpl) AddChangesForPersistence(writeBatch *gorocksdb.WriteBatch) error {
delta := impl.stateDelta
if delta == nil {
return nil
}
openchainDB := db.GetDBHandle()
updatedChaincodeIds := delta.GetUpdatedChaincodeIds(false)
for _, updatedChaincodeID := range updatedChaincodeIds {
updates := delta.GetUpdates(updatedChaincodeID)
for updatedKey, value := range updates {
compositeKey := statemgmt.ConstructCompositeKey(updatedChaincodeID, updatedKey)
if value.IsDeleted() {
writeBatch.DeleteCF(openchainDB.StateCF, compositeKey)
} else {
writeBatch.PutCF(openchainDB.StateCF, compositeKey, value.GetValue())
}
}
}
return nil
}
func minimumPossibleDataKeyBytes(bucketNumber int, chaincodeID string, key string) []byte {
b := encodeBucketNumber(bucketNumber)
b = append(b, statemgmt.ConstructCompositeKey(chaincodeID, key)...)
return b
}
// Get - method implementation for interface 'statemgmt.HashableState'
func (impl *StateImpl) Get(chaincodeID string, key string) ([]byte, error) {
compositeKey := statemgmt.ConstructCompositeKey(chaincodeID, key)
openchainDB := db.GetDBHandle()
return openchainDB.GetFromStateCF(compositeKey)
}
func (testHasher *testHasher) populate(chaincodeID string, key string, hash uint32) {
testHasher.testHashFunctionInput[string(statemgmt.ConstructCompositeKey(chaincodeID, key))] = hash
}