//This sends the error to the client.
func sendError(sendReply proto.SendBinlogResponse, reqIdentifier string, inputErr error, blpPos *proto.BinlogPosition) {
var err error
streamBuf := new(proto.BinlogResponse)
streamBuf.Error = inputErr.Error()
if blpPos != nil {
streamBuf.Position = *blpPos
}
buf := []*proto.BinlogResponse{streamBuf}
err = blsSendStream(sendReply, buf)
if err != nil {
log.Errorf("Error in communicating message %v with the client: %v", inputErr, err)
}
}
//This builds BinlogResponse for each transaction.
func (blp *Bls) buildTxnResponse() (txnResponseList []*proto.BinlogResponse, dmlCount int64) {
var line []byte
var keyspaceIdStr string
var keyspaceId key.KeyspaceId
dmlBuffer := make([]string, 0, 10)
for _, event := range blp.txnLineBuffer {
line = event.LogLine
if bytes.HasPrefix(line, BINLOG_BEGIN) {
streamBuf := new(proto.BinlogResponse)
streamBuf.Position = event.BinlogPosition
streamBuf.Data.SqlType = proto.BEGIN
txnResponseList = append(txnResponseList, streamBuf)
continue
}
if bytes.HasPrefix(line, BINLOG_COMMIT) {
commitEvent := blsCreateCommitEvent(event)
txnResponseList = append(txnResponseList, commitEvent)
continue
}
sqlType := proto.GetSqlType(event.firstKw)
if sqlType == proto.DML {
keyspaceIdStr, keyspaceId = parseKeyspaceId(line)
if keyspaceIdStr == "" {
continue
}
if !blp.keyRange.Contains(keyspaceId) {
dmlBuffer = dmlBuffer[:0]
continue
}
dmlCount += 1
dmlBuffer = append(dmlBuffer, string(line))
dmlEvent := blp.createDmlEvent(event, keyspaceIdStr)
dmlEvent.Data.Sql = make([]string, len(dmlBuffer))
dmlLines := copy(dmlEvent.Data.Sql, dmlBuffer)
if dmlLines < len(dmlBuffer) {
log.Warningf("The entire dml buffer was not properly copied")
}
txnResponseList = append(txnResponseList, dmlEvent)
dmlBuffer = dmlBuffer[:0]
} else {
//add as prefixes to the DML from last DML.
//start a new dml buffer and keep adding to it.
dmlBuffer = append(dmlBuffer, string(line))
}
}
return txnResponseList, dmlCount
}