/// <summary>
/// For write committed version to log.
/// </summary>
public LogRequest(string tableId, long txId, LogVersionEntry logEntry, LogRequestType type)
{
this.TableId = tableId;
this.TxId = txId;
this.LogEntry = logEntry;
this.Type = type;
}
internal void Flush()
{
// Send queued requests to Cassandra, collect results and store each of them in the corresonding request
for (int reqId = 0; reqId <= this.currReqId; reqId++)
{
LogRequest req = this.requestQueue[reqId];
if (req.Type == LogRequestType.WriteTxLog)
{
req.IsSuccess = CassandraLogStore.Instance.InsertCommittedTx(req.TxId);
req.Finished = true;
}
else
{
LogVersionEntry entry = req.LogEntry;
req.IsSuccess = CassandraLogStore.Instance.InsertCommittedVersion(req.TableId, entry.RecordKey, entry.Payload, req.TxId, entry.CommitTs);
req.Finished = true;
}
}
// Release the request lock to make sure processRequest can keep going
for (int reqId = 0; reqId <= this.currReqId; reqId++)
{
// Monitor.Wait must be called in sync block, here we should lock the
// request and release the it on time
lock (this.requestQueue[reqId])
{
System.Threading.Monitor.PulseAll(this.requestQueue[reqId]);
}
}
this.currReqId = -1;
}
public bool WriteCommittedVersion(string tableId, object recordKey, object payload, long txId, long commitTs)
{
if (this.PipelineMode)
{
LogVersionEntry logEntry = new LogVersionEntry(recordKey, payload, txId);
LogRequest request = new LogRequest(tableId, txId, logEntry, LogRequestType.WriteVersionLog);
return(this.connectionPool[txId % CassandraLogStore.DEFAULT_CONNECTION_POOL_COUNT].ProcessBoolRequest(request));
}
else
{
return(this.InsertCommittedVersion(tableId, recordKey, payload, txId, commitTs));
}
}
