func (txmgr *CouchDBTxMgr) validateTx(txRWSet *rwset.TxReadWriteSet) (bool, error) {
var err error
var currentVersion *version.Height
for _, nsRWSet := range txRWSet.NsRWs {
ns := nsRWSet.NameSpace
for _, kvRead := range nsRWSet.Reads {
compositeKey := constructCompositeKey(ns, kvRead.Key)
if txmgr.updateSet != nil && txmgr.updateSet.exists(compositeKey) {
return false, nil
}
if currentVersion, err = txmgr.getCommitedVersion(ns, kvRead.Key); err != nil {
return false, err
}
if !version.AreSame(currentVersion, kvRead.Version) {
logger.Debugf("Version mismatch for key [%s:%s]. Current version = [%d], Version in readSet [%d]",
ns, kvRead.Key, currentVersion, kvRead.Version)
return false, nil
}
}
}
return true, nil
}
func (v *Validator) validateTx(txRWSet *rwset.TxReadWriteSet, updates *statedb.UpdateBatch) (bool, error) {
for _, nsRWSet := range txRWSet.NsRWs {
ns := nsRWSet.NameSpace
for _, kvRead := range nsRWSet.Reads {
if updates.Exists(ns, kvRead.Key) {
return false, nil
}
versionedValue, err := v.db.GetState(ns, kvRead.Key)
if err != nil {
return false, nil
}
var committedVersion *version.Height
if versionedValue != nil {
committedVersion = versionedValue.Version
}
if !version.AreSame(committedVersion, kvRead.Version) {
logger.Debugf("Version mismatch for key [%s:%s]. Committed version = [%s], Version in readSet [%s]",
ns, kvRead.Key, committedVersion, kvRead.Version)
return false, nil
}
}
}
return true, nil
}