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https://issues.apache.org/jira/browse/AMQNET-471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13919637#comment-13919637
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Imran commented on AMQNET-471:
------------------------------
I see, yes this is a single consumer for the purpose of the test. I am
expecting the commit to fail and then after the rollback, when the service
comes back up the message should be redelivered. I couldn't see anything wrong
with my client code as the client should just be able to consume the message
again when it is redelivered. I can see why this exception is thrown on commit,
since you can't commit if you have no connection but then shouldn't the
rollback clear the message from the client cache and just allow it to be
redelivered by the broker?
> Synchronous message consumer will lose a message that failed to commit whilst
> the broker was unavailable
> --------------------------------------------------------------------------------------------------------
>
> Key: AMQNET-471
> URL: https://issues.apache.org/jira/browse/AMQNET-471
> Project: ActiveMQ .Net
> Issue Type: Bug
> Components: ActiveMQ
> Affects Versions: 1.6.2
> Reporter: Imran
> Assignee: Jim Gomes
>
> If the broker is down then the client can not commit the current message. An
> exception is thrown by the library. This is the behavior you would expect.
> If you then try and rollback the transaction on the session due to the
> exception and resume message consumption, the rolled back message will never
> be redelivered.
> {code:title=FailingTest|borderStyle=solid}
> [TestFixture, Explicit]
> public class BrokerRestart
> {
> [Test]
> public void
> Message_should_be_redilivered_if_broker_is_down_and_try_commit()
> {
> StartService(ActiveMqMaster);
> DeleteQueue();
> SendMessageToQueue();
> var session =
> _connection.CreateSession(AcknowledgementMode.Transactional);
> var consumer =
> session.CreateConsumer(SessionUtil.GetDestination(session, InQ));
> var message = consumer.Receive(TimeSpan.FromSeconds(30));
> _log.Debug("Received message");
> StopService(ActiveMqMaster);
> _log.Debug("Commiting transaction");
> try
> {
> session.Commit();
> }
> catch (Exception ex)
> {
> _log.ErrorFormat("Exception: {0}", ex.ToString().Substring(0,
> 250));
> try
> {
> session.Rollback();
> }
> catch (Exception einner)
> {
> _log.Debug("Rollback transaction");
> _log.ErrorFormat("Exception: {0}",
> einner.ToString().Substring(0, 250));
> }
> }
> StartService(ActiveMqMaster);
> message = consumer.Receive(TimeSpan.FromSeconds(30));
> Assert.That(message, Is.Not.Null, "message was not redilivered");
> }
> private void StartService(ServiceController service)
> {
> if (service.Status != ServiceControllerStatus.Running)
> service.Start();
> service.WaitForStatus(ServiceControllerStatus.Running);
> _log.Debug("Started Broker");
> }
> private void StopService(ServiceController service)
> {
> if (service.Status != ServiceControllerStatus.Stopped)
> service.Stop();
> service.WaitForStatus(ServiceControllerStatus.Stopped);
> _log.Debug("Stopped Broker Broker");
> }
> private void SendMessageToQueue()
> {
> using (var session = _connection.CreateSession())
> using (var producer =
> session.CreateProducer(SessionUtil.GetDestination(session, InQ)))
> {
> producer.Send(producer.CreateTextMessage(1.ToString()));
> session.Commit();
> }
> _log.Debug("Primed Input Queue");
> }
> private void DeleteQueue()
> {
> using (var session = _connection.CreateSession())
> {
> SessionUtil.DeleteDestination(session, InQ);
> }
> }
> [SetUp]
> public void TestSetup()
> {
> LogManager.Adapter = new
> ConsoleOutLoggerFactoryAdapter(LogLevel.Debug, true, true, true, "HH:MM:ss");
> _log = LogManager.GetLogger(typeof (BrokerRestart).Name);
> var factory = new
> ConnectionFactory(@"failover:(tcp://localhost:61616)")
> {
> AcknowledgementMode = AcknowledgementMode.Transactional,
> RedeliveryPolicy = new RedeliveryPolicy {
> InitialRedeliveryDelay = 0, MaximumRedeliveries = 3, BackOffMultiplier = 0,
> UseExponentialBackOff = false },
> AsyncSend = false,
> };
> _connection = factory.CreateConnection();
> _connection.Start();
> //Tracer.Trace = new CommonLoggingTraceAdapter();
> }
> protected ServiceController ActiveMqMaster = new
> ServiceController(@"ActiveMQ");
> //protected ServiceController ActiveMqSlave = new
> ServiceController(@"ActiveMQSlave");
> private IConnection _connection;
> private const string InQ = "integration-test-q";
> private ILog _log;
> }
> {code}
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