protected virtual async Task TryDispatchHandlerPostCommitAsync(DomainEventHandlerMessage domainEventHandlerMessage)
{
try
{
await HandlePostCommitAsync(domainEventHandlerMessage).ConfigureAwait(false);
}
catch
{
//Log InProcess Post commit event failed
}
}
protected override Task TryDispatchHandlerPostCommitAsync(DomainEventHandlerMessage domainEventHandlerMessage)
{
try
{
//Each Post Commit Domain Event Handling is completely independent. By registering the event AND handler (rather than just the event) in hangfire we get the granularity of retrying at a event/handler level.
//Hangfire unfortunately uses System.Type.GetType to get job type. This only looks at the referenced assemblies of the web project and not the dynamic loaded plugins so need to
//proxy back through this common assembly.
var job = Job.FromExpression <IDomainEventsMediator>(m => m.HandlePostCommitAsync(domainEventHandlerMessage));
var queue = new EnqueuedState(_serverSettings.ServerName);
_backgroundJobClient.Create(job, queue);
}
catch
{
//Log Hangfire Post commit event Background enqueue failed
}
return(Task.CompletedTask);
}
//Event Dispatcher
public async Task HandlePostCommitDispatchAsync(DomainEventMessage domainEventMessage)
{
var handlerTypes = _domainEventSubscriptionsManager.GetHandlersForEvent(domainEventMessage.DomainEvent);
if (DispatchPostCommitEventsInParellel)
{
await Task.Run(() => Parallel.ForEach(handlerTypes, async handlerType =>
{
var domainEventHandlerMessage = new DomainEventHandlerMessage(handlerType.HandlerType.FullName, domainEventMessage);
await TryDispatchHandlerPostCommitAsync(domainEventHandlerMessage).ConfigureAwait(false);
}));
}
else
{
foreach (var handlerType in handlerTypes)
{
var domainEventHandlerMessage = new DomainEventHandlerMessage(handlerType.HandlerType.FullName, domainEventMessage);
await TryDispatchHandlerPostCommitAsync(domainEventHandlerMessage).ConfigureAwait(false);
}
}
}
public async Task HandlePostCommitAsync(DomainEventHandlerMessage domainEventHandlerMessage)
{
Type handlerType = System.Type.GetType(domainEventHandlerMessage.HandlerType);
if (handlerType == null)
{
foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
{
handlerType = assembly.GetType(domainEventHandlerMessage.HandlerType);
if (handlerType != null)
{
break;
}
}
}
if (handlerType == null)
{
throw new Exception("Invalid handler type");
}
await DispatchPostCommitAsync(handlerType, domainEventHandlerMessage.DomainEventMessage.DomainEvent).ConfigureAwait(false);
}