Not that it helps much, I tried it with a 5.x release and your code works
fine. I see the subscription is durable across consumer and broker restarts.
Have you modified your activemq.xml, are you running with 5.1.0?
/Dave
On Fri, Jun 13, 2008 at 1:05 PM, eaglepointe <[EMAIL PROTECTED]> wrote:
>
> Forgot to mention that I also restarted message broker before start durable
> subscriber again.
>
>
> eaglepointe wrote:
> >
> > Ok, here is what I did,
> >
> > 1) start message broker
> > 2) start a durable subscriber which subscribes "topictest.messages" as
> the
> > attached code
> > 3) start publisher, which sends some messages to "topictest.messages" in
> > 'persistent' mode, and the subscriber receives the messages
> > 4) stop the subscriber and publisher
> > 5) start publisher again, which sends some messages to
> > "topictest.messages"
> > 6) stop publisher
> > 7) start subscriber again, according to my understanding of durable
> > subscription, I'd expect subscriber receives the messages sent by
> > publisher, but I got the exceptions instead
> >
> > Following is a more complete version of subscriber code, which is really
> > the sample code comes with ActiveMQ installation, except for the durable
> > subscription.
> >
> > The same code works fine, meaning no exceptions, if I don't use durable
> > subscription.
> > It seems that durable subscription requires some context in message
> broker
> > which somehow got lost.
> >
> >
> >
> --------------------------------------------------------------------------------------------
> >
> > public class TopicListener implements MessageListener {
> >
> > private Connection connection;
> > private MessageProducer producer;
> > private Session session;
> > private int count;
> > private long start;
> > private Topic topic;
> > private Topic control;
> > //private TopicSubscriber consumer;
> >
> > private String url = "tcp://192.168.30.60:61616";
> >
> > public static void main(String[] argv) throws Exception {
> > TopicListener l = new TopicListener();
> > String[] unknown = CommandLineSupport.setOptions(l, argv);
> > if (unknown.length > 0) {
> > System.out.println("Unknown options: " +
> > Arrays.toString(unknown));
> > System.exit(-1);
> > }
> > l.run();
> > }
> >
> > public void run() throws JMSException {
> > ActiveMQConnectionFactory factory = new
> > ActiveMQConnectionFactory(url);
> > connection = factory.createConnection();
> > connection.setClientID("myClient");
> > session = connection.createSession(false,
> > Session.AUTO_ACKNOWLEDGE);
> > topic = session.createTopic("topictest.messages");
> > control = session.createTopic("topictest.control");
> >
> > TopicSubscriber consumer =
> > session.createDurableSubscriber(topic,"myDurable1");
> > //MessageConsumer consumer = session.createConsumer(topic);
> > consumer.setMessageListener(this);
> >
> > producer = session.createProducer(control);
> >
> > System.out.println("Waiting for messages...");
> > connection.start();
> > }
> >
> ---------------------------------------------------------------------------------
> >
> > your grateful,
> > -Jeff
> >
> >
> >
> > Dave Stanley wrote:
> >>
> >> Your not running this from within a thread by any chance? I don't
> >> believe connection.start() is going to block, so try and create the
> >> connection outside the thread and pass it in by reference to the thread
> >> instance.
> >>
> >> HTH
> >> /Dave
> >>
> >>
> >> On Thu, Jun 12, 2008 at 10:30 PM, eaglepointe <[EMAIL PROTECTED]>
> >> wrote:
> >>
> >>>
> >>> Hi,
> >>>
> >>> I'm new to ActiveMQ and having problem with durable subscription,
> >>> following
> >>> code based on example code,
> >>>
> >>> ===================================================================
> >>> public void run() throws JMSException {
> >>> ActiveMQConnectionFactory factory = new
> >>> ActiveMQConnectionFactory(url);
> >>> connection = factory.createConnection();
> >>> connection.setClientID("myClient");
> >>> session = connection.createSession(false,
> >>> Session.AUTO_ACKNOWLEDGE);
> >>> topic = session.createTopic("topictest.messages");
> >>> control = session.createTopic("topictest.control");
> >>>
> >>> TopicSubscriber consumer =
> >>> session.createDurableSubscriber(topic,"myDurable1");
> >>> //MessageConsumer consumer = session.createConsumer(topic);
> >>> consumer.setMessageListener(this);
> >>>
> >>> producer = session.createProducer(control);
> >>>
> >>> System.out.println("Waiting for messages...");
> >>> connection.start();
> >>> }
> >>> =================================================================
> >>>
> >>> is causing exceptions on broker side and client side, below are the
> >>> exceptions
> >>>
> >>> broker side:
> >>>
> >>> ERROR Service - Async error occurred:
> >>> java.lang.NullPointerException
> >>> java.lang.NullPointerException
> >>> at
> >>>
> >>>
> org.apache.activemq.broker.TransportConnection.processAddProducer(TransportConnection.java:479)
> >>> at
> >>> org.apache.activemq.command.ProducerInfo.visit(ProducerInfo.java:105)
> >>> at
> >>>
> >>>
> org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:292)
> >>> at
> >>>
> >>>
> org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:180)
> >>> at
> >>>
> >>>
> org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:68)
> >>> at
> >>>
> >>>
> org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:143)
> >>> at
> >>>
> >>>
> org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:206)
> >>> at
> >>>
> >>>
> org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
> >>> at
> >>>
> org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:196)
> >>> at
> >>>
> org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:183)
> >>> at java.lang.Thread.run(Thread.java:619)
> >>>
> >>> client side:
> >>>
> >>> Exception in thread "ActiveMQ Session Task"
> >>> java.util.concurrent.RejectedExecutionException
> >>> at
> >>>
> >>>
> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(Unknown
> >>> Source)
> >>> at java.util.concurrent.ThreadPoolExecutor.reject(Unknown
> Source)
> >>> at java.util.concurrent.ThreadPoolExecutor.execute(Unknown
> >>> Source)
> >>> at
> >>>
> >>>
> org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:144)
> >>> at
> >>>
> org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
> >>> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
> >>> Source)
> >>> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
> >>> Source)
> >>> at java.lang.Thread.run(Unknown Source)
> >>>
> >>>
> >>> Any idea? Thanks in advance!
> >>>
> >>> --
> >>> View this message in context:
> >>>
> http://www.nabble.com/having-problem-with-durable-subscription-tp17813954p17813954.html
> >>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
> >>>
> >>>
> >>
> >>
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/having-problem-with-durable-subscription-tp17813954p17828072.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>
>
