public TransactionInfo GetTransactionInfo(long writerCheckpoint, long transactionId)
{
TransactionInfo transactionInfo;
if (!_transactionInfoCache.TryGet(transactionId, out transactionInfo))
{
if (GetTransactionInfoUncached(writerCheckpoint, transactionId, out transactionInfo))
{
_transactionInfoCache.Put(transactionId, transactionInfo, 0);
}
else
{
transactionInfo = new TransactionInfo(int.MinValue, null);
}
Interlocked.Increment(ref _notCachedTransInfo);
}
else
{
Interlocked.Increment(ref _cachedTransInfo);
}
return(transactionInfo);
}
public void UpdateTransactionInfo(long transactionId, long logPosition, TransactionInfo transactionInfo)
{
_notProcessedTrans.Enqueue(new TransInfo(transactionId, logPosition));
_transactionInfoCache.Put(transactionId, transactionInfo, +1);
}
private bool GetTransactionInfoUncached(long writerCheckpoint, long transactionId, out TransactionInfo transactionInfo)
{
using (var reader = _indexBackend.BorrowReader())
{
reader.Reposition(writerCheckpoint);
SeqReadResult result;
while ((result = reader.TryReadPrev()).Success)
{
if (result.LogRecord.LogPosition < transactionId)
break;
if (result.LogRecord.RecordType != LogRecordType.Prepare)
continue;
var prepare = (PrepareLogRecord)result.LogRecord;
if (prepare.TransactionPosition == transactionId)
{
transactionInfo = new TransactionInfo(prepare.TransactionOffset, prepare.EventStreamId);
return true;
}
}
}
transactionInfo = new TransactionInfo(int.MinValue, null);
return false;
}
public TransactionInfo GetTransactionInfo(long writerCheckpoint, long transactionId)
{
TransactionInfo transactionInfo;
if (!_transactionInfoCache.TryGet(transactionId, out transactionInfo))
{
if (GetTransactionInfoUncached(writerCheckpoint, transactionId, out transactionInfo))
_transactionInfoCache.Put(transactionId, transactionInfo, 0);
else
transactionInfo = new TransactionInfo(int.MinValue, null);
Interlocked.Increment(ref _notCachedTransInfo);
}
else
{
Interlocked.Increment(ref _cachedTransInfo);
}
return transactionInfo;
}
public void UpdateTransactionInfo(long transactionId, long logPosition, TransactionInfo transactionInfo)
{
_notProcessedTrans.Enqueue(new TransInfo(transactionId, logPosition));
_transactionInfoCache.Put(transactionId, transactionInfo, +1);
}
private bool GetTransactionInfoUncached(long writerCheckpoint, long transactionId, out TransactionInfo transactionInfo)
{
var seqReader = GetSeqReader();
try
{
seqReader.Reposition(writerCheckpoint);
SeqReadResult result;
while ((result = seqReader.TryReadPrev()).Success)
{
if (result.LogRecord.Position < transactionId)
break;
if (result.LogRecord.RecordType != LogRecordType.Prepare)
continue;
var prepare = (PrepareLogRecord)result.LogRecord;
if (prepare.TransactionPosition == transactionId)
{
transactionInfo = new TransactionInfo(prepare.TransactionOffset, prepare.EventStreamId);
return true;
}
}
}
finally
{
ReturnSeqReader(seqReader);
}
transactionInfo = new TransactionInfo(int.MinValue, null);
return false;
}
TransactionInfo IReadIndex.GetTransactionInfo(long writerCheckpoint, long transactionId)
{
TransactionInfo transactionInfo;
if (!_transactionInfoCache.TryGet(transactionId, out transactionInfo))
{
if (GetTransactionInfoUncached(writerCheckpoint, transactionId, out transactionInfo))
_transactionInfoCache.Put(transactionId, transactionInfo);
else
transactionInfo = new TransactionInfo(int.MinValue, null);
}
return transactionInfo;
}
void IReadIndex.UpdateTransactionInfo(long transactionId, TransactionInfo transactionInfo)
{
_transactionInfoCache.Put(transactionId, transactionInfo);
}
private bool GetTransactionInfoUncached(long writerCheckpoint, long transactionId, out TransactionInfo transactionInfo)
{
using (var reader = _indexBackend.BorrowReader())
{
reader.Reposition(writerCheckpoint);
SeqReadResult result;
while ((result = reader.TryReadPrev()).Success)
{
if (result.LogRecord.LogPosition < transactionId)
{
break;
}
if (result.LogRecord.RecordType != LogRecordType.Prepare)
{
continue;
}
var prepare = (PrepareLogRecord)result.LogRecord;
if (prepare.TransactionPosition == transactionId)
{
transactionInfo = new TransactionInfo(prepare.TransactionOffset, prepare.EventStreamId);
return(true);
}
}
}
transactionInfo = new TransactionInfo(int.MinValue, null);
return(false);
}
public void UpdateTransactionInfo(long transactionId, TransactionInfo transactionInfo)
{
throw new NotImplementedException();
}