Stopping an MDB from Listening to a Queue

[pbaker01]

I have posted this question on a few different forums... So I apologize again for the cross posting.

Most recent at: JBoss.com -> JBoss User -> JBoss Messaging
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=147381
And I have been referred to this forum.

Problem:
I have a queue and a listener. The listener is configured as a MDB. I want to be able to:
o Start/Stop the queue delivery via JMX
o Start/Stop the queue delivery programatically

I have seen several posts that suggest that I should be able to use JMX to "stopDelivery". When I look at my JMX console page I do not see any reference to my MDB and certanly no references to stopDelivery. I have deployed the application via Eclipse as "Exploded".

Environment:
JBoss: Jboss-5.0.0 GA
JDK: jdk1.6.0_10

Below is the code for my MDB:

import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;

@MessageDriven(mappedName = "jms/SSMListener", activationConfig = {
 @ActivationConfigProperty(propertyName="messagingType", propertyValue="javax.jms.MessageListener"),
 @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
 @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
 @ActivationConfigProperty(propertyName="destination",propertyValue="queue/SSMQueue") })
public class SSMListener implements MessageListener {

 public void onMessage(Message arg0) {
 // TODO Auto-generated method stub
 TextMessage tm = (TextMessage) arg0;
 try {
 System.out.println("I'm alive - " + tm.getText());
 } catch (JMSException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
}

JBoss.xml

<jboss>
 <enterprise-beans>
 <message-driven>
 <ejb-name>SSMListener</ejb-name>
 <local-jndi-name>jms/SSMListener</local-jndi-name>
 <destination-jndi-name>queue/SSMQueue</destination-jndi-name>
 </message-driven>
 </enterprise-beans>
</jboss>

destinations-service.xml

<mbean code="org.jboss.mq.server.jmx.Queue"
 name="jboss.mq.destination:service=Queue,name=SSMQueue">
 <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
 </mbean>

Here is are two snapshots of my JMX console.

http://img.picbite.com/2008/12/14/22833fjhhs.png
http://img.picbite.com/2008/12/14/22835imemm.png

I don't see any JMX controls for startDelivery or stopDelivery.
o What am I doing wrong here?
o Do I need to configure the MDB as an mbean?

For start/stoping programatically I have the following code:

ObjectName objectName;
try {
 objectName = new ObjectName(
 "jboss.j2ee:binding=message-driven-bean, jndiName=jms/SSMListener, plugin=invoker,service=EJB");
 MBeanServer server = MBeanServerLocator.locateJBoss();
 server.invoke(objectName, "stopDelivery", new Object[] {}, null);
} catch (MalformedObjectNameException e1) {
 // TODO Auto-generated catch block
 e1.printStackTrace();
} catch (NullPointerException e1) {
 // TODO Auto-generated catch block
 e1.printStackTrace();
} catch (InstanceNotFoundException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
} catch (MBeanException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
} catch (ReflectionException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
}

This code generates exception:

10:55:55,157 ERROR [STDERR] javax.management.InstanceNotFoundException: jboss.j2ee:binding=message-driven-bean, jndiName=jms/SSMListener, plugin=invoker,service=EJB is not registered.
10:55:55,158 ERROR [STDERR] at org.jboss.mx.server.registry.BasicMBeanRegistry.get(BasicMBeanRegistry.java:529)
10:55:55,158 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:662)
10:55:55,158 ERROR [STDERR] at com.sita.wab.service.SsimService.startLoad(SsimService.java:65)
10:55:55,158 ERROR [STDERR] at com.sita.wab.ejb.ssim.SsimEjbBean.startLoad(SsimEjbBean.java:32)

I suspect once I get the JMX issue resolved the answer to this problem will be obvious.

Other than the starting/stopping the queue, everything else works well.

Any help will be greatly appreciated.

And again, I apologize again for the cross posting. Hopefully the answer will be found here :)

Paul

[clebert.suconic]

Man...

You are really cross posting. I know you realized that...

I already told you how to stop a MDB. You just stop the EAR where your MDB is located at.


Your question now is more specific to "how to stop a specific component". (maybe after some investigation of course).

Instead of asking the same question again, if you asked something specific, you would get an answer faster.

[pbaker01]

Hi again Clebert,

Thank you for the reply. Starting/Stoping the EAR is not the solution that I
am looking for. However, that said, perhaps you are correct. I should
focus on the basic problem and that is how to expose the startDelivery
and stopDelivery methods in JMX.

I want to configure my app so that my MDB is exposed as a service along
with the startDelivery and stopDelivery methods. What am I missing?

No more cross posts, I promise! :)

Paul

[clebert.suconic]

Ok...


Now I have a question:


With JBoss4 I used to be able to call StopDelivery directly on the MDB. All I had to do is find the MDB MBean, usually with a name like:

binding=message-driven-bean,jndiName=local/MDBExample@1421788223,plugin=invoker,service=EJB


This is actually documented on the JBAS user's guide.


But with JBoss5 this is not available.



If this was not disabled by design (with a strong reason for that):


That would probably be considered a bug.

[pbaker01]

Clebert,

Thanks for following up on this.. I do think that I have a configuration
problem though because even with Joss4 I did not have the
start/stopDelivery methods shown on the MDB within the JMX console.

I do think that we have narrowed down my problem to:

- Is there any special configuration required to expose the start/stopDelivery methods for an MDB for JMX?
- Under what conditions are these methods shown in JMX and what would prevent them from being shown?

PB - Atlanta

[pbaker01]

I have fallen back to JBoss 4.2.3.

Using the http://localhost:8080/jmx-console/
I search for jboss.j2ee and locate my MDB
jar=WAB_EJB.jar,name=SSMListener,service=EJB3

When I select the MDB link it I get controls to start and stop the MDB. Refer to the
images here: http://picbite.com/image/11176bjgfn/

Two points:
1) I don't find any JMX entry that is formatted like that described above by Clebert:
binding=message-driven-bean,jndiName=local/MDBExample@1421788223,plugin=invoker,service=EJB
2) I can't find equivalent control using JBoss 5.

I know that I am missing something... What is it?
Any help will be appreciated.

Paul

[pbaker01]

Anybody?

I have seen at least one other unanswered topic regarding this issue:
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=133360

Any guidance would be greatly appreciated.

PB