I originally got the idea from the LoadBalancerMessageModule. I will log some stats on Transaction.Current to see what's happening there.
if this is before rollback, then that would explain why the message is not sent, correct? On Oct 2, 9:17 am, Ayende Rahien <[email protected]> wrote: > Jason, > I don't think that you can send messages from message modules. > The idea never occurred to me, to tell you the truth. > In this particular case, I can't recall off hand what the transaction state > if for this case, but I think it is just before we roll it back, or maybe > even without a transaction. > Both of those scenarios will explain why you aren't seeing the message being > sent. > > On Thu, Oct 1, 2009 at 8:37 PM, Jason Meckley <[email protected]>wrote: > > > > > I have ~2 dozen consumers that all handle the happy days scenario (no > > exceptions). I then have a message module which will handle the > > exceptions. the code my be easier to understand > > > public class OutOfRetriesMessageModule : IMessageModule > > { > > private readonly IReflection reflection; > > private readonly int numberOfRetries; > > private readonly Hashtable<Guid, int> failures; > > > private ITransport theTransport; > > > public OutOfRetriesMessageModule(int numberOfRetries, > > Hashtable<Guid, int> failures, IReflection reflection) > > { > > this.numberOfRetries = numberOfRetries; > > this.failures = failures; > > this.reflection = reflection; > > } > > > public void Init(ITransport transport) > > { > > theTransport = transport; > > transport.MessageProcessingFailure += > > message_processing_failure_send_failure_notice_if_necessary; > > transport.MessageProcessingCompleted += > > message_processing_completed_clear_failures_if_necessary; > > } > > > public void Stop(ITransport transport) > > { > > transport.MessageProcessingFailure -= > > message_processing_failure_send_failure_notice_if_necessary; > > transport.MessageProcessingCompleted -= > > message_processing_completed_clear_failures_if_necessary; > > } > > > private void > > message_processing_failure_send_failure_notice_if_necessary > > (CurrentMessageInformation information, Exception exception) > > { > > var messageId = information.MessageId; > > if (exception == null) return; > > if(!typeof > > (RequestToGenerateReportMessage).IsAssignableFrom > > (information.Message.GetType())) return; > > > increment_failed_attempts(messageId); > > if (!has_exceeded_number_of_retries(messageId)) return; > > > send_failure_notice(information); > > } > > > private void > > message_processing_completed_clear_failures_if_necessary > > (CurrentMessageInformation information, Exception exception) > > { > > if (exception != null) return; > > failures.Write(writer => writer.Remove > > (information.MessageId)); > > } > > > private void increment_failed_attempts(Guid messageId) > > { > > failures.Write(writer => > > { > > int attempts; > > writer.TryGetValue(messageId, out > > attempts); > > writer.Add(messageId, ++attempts); > > }); > > } > > > private bool has_exceeded_number_of_retries(Guid id) > > { > > var attempts = 0; > > failures.Read(reader => reader.TryGetValue(id, out > > attempts)); > > return attempts >= numberOfRetries; > > } > > > private void send_failure_notice(CurrentMessageInformation > > information) > > { > > var message = information.Message; > > var generatedReportFailed = new ReportGeneratedMessage > > { > > instance_id = > > reflection.parse_instance_id(message), > > date = reflection.parse_date > > (message), > > region_id = > > reflection.parse_region_id(message), > > report_id = > > reflection.parse_report_id(message), > > file_name = "", > > success = false > > }; > > theTransport.Reply(generatedReportFailed); > > } > > } > > > the problem is the system is not throwing an excpetion and I'm not > > consuming the generatedReportFailed message on the other end. if I > > move the send_failure_notice logic into the Consume() member of each > > consumer wrapped in a try/catch the workflow is processed correctly > > and I receive a failure notice on the other end. > > > it what i'm trying to do possible? send/reply a message from within > > the message module? it would seem I don't need to wrap this in a > > transactionscope because theTransport will handle that for me. the > > Transport implementation is RQ. > > > I also tried > > theTransport.Send(new EndPoint{Url=information.Source}, new object[] > > {generatedReportFailed}); > > but that was throwing timeout exceptions. (duration cannot be > > negative). or just not working at all. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Rhino Tools Dev" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rhino-tools-dev?hl=en -~----------~----~----~----~------~----~------~--~---
