2 Replies Latest reply on Sep 14, 2006 6:45 PM by ocgabriel

    Looking up MessageDrivenBean/MessageListener

    ocgabriel
    ocgabriel Sep 13, 2006 9:52 PM

      Hi,

      Firstly, i am using JBoss 3.2.7 (this cant be changed).

      I have the following scenario and im stuck for ideas on what is going on and why its failing to lookup as you will see.

      I have a queue called: BatchProcessorQueue
      (The queue works fine with the unit tests i have in place)

      I have an MDB with the following description:

      package mdb;

//imports

/**
 * @ejb.bean
 * name="ejb/BatchProcessorBean"
 * display-name="BatchProcessorBean"
 * acknowledge-mode="Auto-acknowledge"
 * destination-type="javax.jms.Queue"
 * subscription-durability="Durable"
 *
 * @jboss.destination-jndi-name
 * name="queue/BatchProcessorQueue"
 */
public class BatchProcessorBean implements MessageDrivenBean, MessageListener
{
 // non relevant code
}


      When this MDB is loaded into JBoss, the entry i see in the JMX console is: 

      jboss.j2ee
binding=message-driven-bean,jndiName=local/ejb/BatchProcessorBean@24345503,plugin=invoker,service=EJB


      In another bean i have the following code where i actually try to locate the MDB but it isnt able to locate the MDB and every combination ive tried for the object name isnt working. 

      JMSContainerInvokerMBean invoker = null;

try
{
 ObjectName configObjName = new ObjectName(
 "jboss.j2ee:name=local/ejb/BatchProcessorBean"
 );

 invoker = (JMSContainerInvokerMBean) MBeanProxy.get(
 JMSContainerInvokerMBean.class,
 configObjName,
 MBeanHelper.getMBeanServer() );
}
catch ( Exception e )
{
 log.warn( "failed to obtain a valid service configuration MBean, using default, " + e.getMessage() );
 e.printStackTrace();
}

if(invoker != null)
{
 try
 {
 log.info("Stopping the MBean");
 invoker.stop();
 log.info("Setting MBean to size of " + size);
 invoker.setMaxPoolSize(size);
 log.info("Starting the MBean");
 invoker.start();
 return true;
 }
 catch (Exception e)
 {
 log.warn("Failed to restart the BatchProcessorBean MBean");
 e.printStackTrace();
 }
}


      Having tried countless combinations for the lookup but the error i get is this: 
      01:44:09,111 WARN [AdapterBean] failed to obtain a valid service configuration MBean, using default, Object name jboss.j2ee:binding=message-driven-bean,jndiName=local/ejb/BatchProcessorBean@24345503,plugin=invoker,service=EJB not found: javax.management.InstanceNotFoundException: jbos
s.j2ee:binding=message-driven-bean,jndiName=local/ejb/BatchProcessorBean@24345503,plugin=invoker,service=EJB is not registered.
01:44:09,111 INFO [STDOUT] org.jboss.mx.util.MBeanProxyCreationException: Object name jboss.j2ee:binding=message-driven-bean,jndiName=local/ejb/BatchProcessorBean@24345503,plugin=invoker,service=EJB not found: javax.management.InstanceNotFoundException: jboss.j2ee:binding=message-driven-bean,j
ndiName=local/ejb/BatchProcessorBean@24345503,plugin=invoker,service=EJB is not registered.
01:44:09,142 INFO [STDOUT] at org.jboss.mx.util.JMXInvocationHandler.<init>(JMXInvocationHandler.java:150)
01:44:09,142 INFO [STDOUT] at org.jboss.mx.util.MBeanProxy.get(MBeanProxy.java:76)
01:44:09,142 INFO [STDOUT] at org.jboss.mx.util.MBeanProxy.get(MBeanProxy.java:64)
.
.
.
.


      Am i missing something somewhere in regards to configuration of the MDB? Does anyone have a similar sort of example i can refer to ? As u will have noticed im trying to restart the target mean that im trying to lookup.

      Am i trying to do the impossible here ? Ive tried to follow this:
      http://wiki.jboss.org/wiki/Wiki.jsp?page=HowCanAnEJBCallAnMBean
      But i dont think it works so well in this situation, or am i missing something from this guide in my implementation ?

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