public void Append(CreateStreamEvent createStreamEvent)
{
_writeMutex.WaitOne(TimeSpan.FromSeconds(1));
try
{
var @event = WriteEventToStream(createStreamEvent);
RunProjections(@event);
}
finally
{
_writeMutex.ReleaseMutex();
}
}
private StreamEvent WriteEventToStream(CreateStreamEvent createStreamEvent)
{
var streamPosition = GetStreamPosition(createStreamEvent);
if (streamPosition == StreamPositions.DoesNotExist)
{
_streams.Add(createStreamEvent.StreamName, new List <StreamEvent>());
streamPosition = 0;
}
if (createStreamEvent.StreamPosition != StreamPositions.Any)
{
CheckStreamPosition(createStreamEvent, streamPosition);
}
var @event = new StreamEvent(createStreamEvent, streamPosition, _allEvents.Count);
_streams[createStreamEvent.StreamName].Add(@event);
_allEvents.Add(@event);
ExecuteSubscriptions(@event);
return(@event);
}
private static void CheckStreamPosition(CreateStreamEvent streamEvent, long currentPosition)
{
switch (streamEvent.StreamPosition)
{
case StreamPositions.CreateNewStream:
{
if (currentPosition != 0)
{
throw new IEventStore.InvalidStreamPosition(
streamEvent.StreamName,
streamEvent.StreamPosition,
currentPosition);
}
break;
}
case StreamPositions.Any:
{
break;
}
default:
{
if (streamEvent.StreamPosition != currentPosition)
{
throw new IEventStore.InvalidStreamPosition(
streamEvent.StreamName,
streamEvent.StreamPosition,
currentPosition);
}
break;
}
}
}