void IHandle <ReplicationMessage.WriteDelete> .Handle(ReplicationMessage.WriteDelete message)
{
Interlocked.Decrement(ref _flushMessagesInQueue);
try
{
if (message.LiveUntil < DateTime.UtcNow)
{
return;
}
if (ShouldCreateStreamFor(message))
{
var transactionPos = _writer.Checkpoint.ReadNonFlushed();
var res = WritePrepareWithRetry(LogRecord.StreamCreated(transactionPos,
message.CorrelationId,
transactionPos,
message.EventStreamId,
LogRecord.NoData));
transactionPos = res.WrittenPos;
WritePrepareWithRetry(LogRecord.Prepare(res.NewPos,
message.CorrelationId,
Guid.NewGuid(),
transactionPos,
0,
message.EventStreamId,
message.ExpectedVersion,
PrepareFlags.StreamDelete | PrepareFlags.TransactionEnd,
SystemEventTypes.StreamDeleted,
LogRecord.NoData,
LogRecord.NoData));
}
else
{
var record = LogRecord.DeleteTombstone(_writer.Checkpoint.ReadNonFlushed(),
message.CorrelationId,
message.EventStreamId,
message.ExpectedVersion);
WritePrepareWithRetry(record);
}
}
finally
{
Flush();
}
}
void IHandle <ReplicationMessage.WriteDelete> .Handle(ReplicationMessage.WriteDelete message)
{
if (_state != VNodeState.Master)
{
throw new InvalidOperationException("Write request not in working state.");
}
CheckExpectedVersionAndWrite(message, (msg, toCreateStream) =>
{
if (toCreateStream)
{
var transactionPos = _writer.Checkpoint.ReadNonFlushed();
var res = WritePrepareWithRetry(LogRecord.StreamCreated(transactionPos,
msg.CorrelationId,
transactionPos,
msg.EventStreamId,
LogRecord.NoData));
transactionPos = res.WrittenPos;
WritePrepareWithRetry(LogRecord.Prepare(res.NewPos,
msg.CorrelationId,
Guid.NewGuid(),
transactionPos,
msg.EventStreamId,
msg.ExpectedVersion,
PrepareFlags.StreamDelete | PrepareFlags.TransactionEnd,
"$stream-deleted",
LogRecord.NoData,
LogRecord.NoData));
}
else
{
var record = LogRecord.DeleteTombstone(_writer.Checkpoint.ReadNonFlushed(),
msg.CorrelationId,
msg.EventStreamId,
msg.ExpectedVersion);
WritePrepareWithRetry(record);
}
});
}
