private async Task <int> ProcessEvent(OrderedEventPayload @event)
{
var eventPayload = @event.EventPayload;
var eventType = eventPayload.GetType();
// Do we have an event listener for this event type?
// TODO: This can be removed once we only get typed events
if (!_eventHandlers.ContainsKey(eventType))
{
return(await Task.FromResult(0));
}
var queryModelStore = GetQueryModelStoreFromEvent(@event);
// Invoke event handler for event
try
{
var eventHandler = _eventHandlers[eventType];
await eventHandler(@event.EventPayload, queryModelStore);
return(await Task.FromResult(1));
}
catch (Exception e)
{
//TODO: Handle exception
Trace.TraceError($"Error while processing event {eventType.FullName} in Projection {this.GetType().FullName}\nException: {e.ToString()}");
throw;
}
//return await Task.FromResult(0);
}
private QueryModelStore GetQueryModelStoreFromEvent(OrderedEventPayload @event)
{
return(new QueryModelStore(
QueryModelRepository,
_projectionMetadataRepository,
@event.Ordering,
_projectionId));
}