public InMemoryStream AppendEvent(InMemoryEvent @event)
{
var list = Events.ToList();
list.Add(@event);
return(AppendEvents(list));
}
private async Task <IExecutionResult> AppendToStreamInternalAsync(string streamId, long expectedVersion, params InMemoryEventData[] events)
{
long eventPosition = 1;
if (expectedVersion == ExpectedVersion.NoStream || expectedVersion == ExpectedVersion.Any)
{
await CreateNewStream(streamId, streamId, events);
eventPosition++;
}
else
{
var existingStream = await this.ReadStreamEventsForwardAsync(streamId, 0,
int.MaxValue);
existingStream.ThrowsIf(stream => !existingStream.HasValue, new AggregateNotFoundException(streamId))
.ThrowsIf(stream => expectedVersion != stream.Value.Version,
new WrongExpectedStreamVersionException(expectedVersion.ToString(),
existingStream.Value.Version.ToString()));
expectedVersion = expectedVersion + events.Length;
var newVersionedStream = existingStream.Value.ChangeVersion(expectedVersion);
eventPosition = newVersionedStream.NextEventNumber;
}
foreach (var @event in events)
{
var newEvent = InMemoryEvent.Create(@event.EventId, streamId, eventPosition, @event.EventType, @event, @event.EventMetadata, DateTime.Now);
InMemoryStream existingStream;
_inMemoryStore.TryGetValue(streamId, out existingStream);
var updatedStream = existingStream.AppendEvents(new List <InMemoryEvent> {
newEvent
});
_inMemoryStore.TryUpdate(streamId, updatedStream, existingStream);
eventPosition++;
}
return(ExecutionResult.Success);
}