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From "Timothy Bish (JIRA)" <jira+amq...@apache.org>
Subject [jira] [Commented] (AMQNET-323) NMS Client does not respect TimeToLive with Listener callback
Date Thu, 31 Mar 2011 18:02:06 GMT

    [ https://issues.apache.org/jira/browse/AMQNET-323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014106#comment-13014106
] 

Timothy Bish commented on AMQNET-323:
-------------------------------------

I just looked at the Producer code, I didn't realize that it had been implemented that way.
 O personally think that incorrect, the point of the producer methods that don't specify a
TTL is that it should respect the set value in the Producer and not take something from the
Message.  It kind of negates the point of having a TTL setting in the Producer and is inconsistent
with the other Message properties like priority and delivery mode which are always defaulted
to the values set in the Producer.  If the user wants to override the set TTL it should be
done by calling the appropriate producer send method.

> NMS Client does not respect TimeToLive with Listener callback
> -------------------------------------------------------------
>
>                 Key: AMQNET-323
>                 URL: https://issues.apache.org/jira/browse/AMQNET-323
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: ActiveMQ, NMS
>    Affects Versions: 1.5.0
>         Environment: Windows 7
>            Reporter: Matthew Good
>            Assignee: Jim Gomes
>         Attachments: TtlUnitTest.txt
>
>
> When TimeToLive expires while a listener is in a redeliver loop, the redelivery never
stops.  The following unit tests show this.  The first unit test uses Receive and it works
fine.  The second uses a listener and it fails.
> I added these tests to AMQRedeliveryPolicyTests
> {code}
> [Test]
> public void TestNornalRedeliveryPolicyOnRollbackUntilTimeToLive()
> {
>     using(Connection connection = (Connection) CreateConnection())
>     {
>         IRedeliveryPolicy policy = connection.RedeliveryPolicy;
>         policy.MaximumRedeliveries = -1;
>         policy.InitialRedeliveryDelay = 500;
>         policy.UseExponentialBackOff = false;
>         connection.Start();
>         ISession session = connection.CreateSession(AcknowledgementMode.Transactional);
>         IDestination destination = session.CreateTemporaryQueue();
>         IMessageProducer producer = session.CreateProducer(destination);
>         IMessageConsumer consumer = session.CreateConsumer(destination);
>         // Send the messages
>         ITextMessage textMessage = session.CreateTextMessage("1st");
>         textMessage.NMSTimeToLive = TimeSpan.FromMilliseconds(800.0);
>         producer.Send(textMessage);
>         session.Commit();
>         ITextMessage m;
>         m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(1000));
>         Assert.IsNotNull(m);
>         Assert.AreEqual("1st", m.Text);
>         session.Rollback();
>         // No delay on first Rollback..
>         m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(100));
>         Assert.IsNotNull(m);
>         session.Rollback();
>         // Show subsequent re-delivery delay is incrementing.
>         m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(100));
>         Assert.IsNull(m);
>         m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(700));
>         Assert.IsNotNull(m);
>         Assert.AreEqual("1st", m.Text);
>         session.Rollback();
>         // The message gets redelivered after 500 ms every time since
>         // we are not using exponential backoff.
>         m = (ITextMessage)consumer.Receive(TimeSpan.FromMilliseconds(700));
>         Assert.IsNull(m);
>     
>     }
> }
> [Test]
> public void TestNornalRedeliveryPolicyOnRollbackUntilTimeToLiveCallback()
> {
>     using(Connection connection = (Connection) CreateConnection())
>     {
>         IRedeliveryPolicy policy = connection.RedeliveryPolicy;
>         policy.MaximumRedeliveries = -1;
>         policy.InitialRedeliveryDelay = 500;
>         policy.UseExponentialBackOff = false;
>         connection.Start();
>         ISession session = connection.CreateSession(AcknowledgementMode.Transactional);
>         IDestination destination = session.CreateTemporaryQueue();
>         IMessageProducer producer = session.CreateProducer(destination);
>         IMessageConsumer consumer = session.CreateConsumer(destination);
>         CallbackClass cc = new CallbackClass(session);
>         consumer.Listener += new MessageListener(cc.consumer_Listener);
>         // Send the messages
>         ITextMessage textMessage = session.CreateTextMessage("1st");
>         textMessage.NMSTimeToLive = TimeSpan.FromMilliseconds(800.0);
>         producer.Send(textMessage);
>         session.Commit();
>         // sends normal message, then immediate retry, then retry after 500 ms, then
expire.
>         Thread.Sleep(2000);
>         Assert.AreEqual(3, cc.numReceived);
>     
>     }
> }
> class CallbackClass
> {
>     private ISession session;
>     public int numReceived = 0;
>     public CallbackClass(ISession session)
>     {
>         this.session = session;
>     }
>     public void consumer_Listener(IMessage message)
>     {
>         numReceived++;
>         ITextMessage m = message as ITextMessage;
>         Assert.IsNotNull(m);
>         Assert.AreEqual("1st", m.Text);
>         session.Rollback();
>     }
> }
> {code}

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