public IDisposable SubscribeEvent(string eventCategory, Action <EventData> callback)
{
var subscription = new EventQueueSubscription <TContext>(this, eventCategory, callback);
lock (this)
{
if (!_subscriptions.ContainsKey(eventCategory))
{
_subscriptions.Add(eventCategory, new List <EventQueueSubscription <TContext> >());
}
_subscriptions[eventCategory].Add(subscription);
}
return(subscription);
}
private void InvokeCallback(EventQueueSubscription <TContext> subscription, EventData @event)
{
_logger.LogDebug($"Invoke callback for event -> {@event.EventCategory} {@event.EventType} {@event.EventId}");
Task.Run(() =>
{
try
{
_logger.LogDebug($"Invoking callback for event -> {@event.EventCategory} {@event.EventType} {@event.EventId}");
subscription.Callback(@event);
}
catch (Exception e)
{
_logger.LogError(e, $"Error invoking callback for event -> {@event.EventCategory} {@event.EventType} {@event.EventId}");
}
})
.ConfigureAwait(false);
}
internal void Unsubscribe(EventQueueSubscription <TContext> subscription)
{
lock (this)
{
if (!_subscriptions.ContainsKey(subscription.EventCategory))
{
throw new InvalidOperationException($"Event category subscriptions {subscription.EventCategory} not found");
}
var subscriptions = _subscriptions[subscription.EventCategory];
if (!subscriptions.Contains(subscription))
{
throw new InvalidOperationException($"Subscription not found");
}
subscriptions.Remove(subscription);
}
}