How to run a Queue and MDB into a cluster

[dmary]

Hi all,

I need to migrate a queue and mdb into a cluster configuration.

I've read mutliple wiki and docs and I need some help.
I'm running all into a Jboss AS 4.05 Ga.

Actualy, to create queue, it is done directly by Jboss , in reading annotation from my MDB. I haven't any xml files, all is done automaticly

For example, this is my annotation into my java file of mdb :

@MessageDriven(messageListenerInterface = MessageListener.class, activationConfig = {
 @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue"),
 @ActivationConfigProperty(propertyName = "destination", propertyValue = "queue/Cmd2MuQueue"),
 @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge") })

Now, from what I've read, I understand that I've got to declare a queue and mdb into xml file and to put it (with java class of MDB) into JBOSS_HOME/deploy-hasingleton/jms.

I've made a conf file for queue, named myqueue-service.xml :

<mbean code="org.jboss.mq.server.jmx.Queue"
 name="jboss.mq.destination:service=Queue,name=Cmd2MuQueue">
 <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
 <depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager</depends>
 <attribute name="SecurityConf">
 <security>
 <role name="guest" read="true" write="true" create="true"/>
 </security>
 </attribute>
 <attribute name="ReceiversImpl">
 org.jboss.mq.server.ReceiversImplArrayList
 </attribute>
 </mbean>

And I've made a jar file contains :

+ com
 + society
 + CmdMessageDrivenBean.class
+ META-inf
 + ejb-jar.xml
 + jboss.xml

ejb-jar.xml :

<ejb-jar>
 <enterprise-beans>
 <message-driven>
 <description>Singleton MDB, MyMDB</description>
 <ejb-name>MyMDB</ejb-name>
 <ejb-class>com.society.CmdMessageDrivenBean</ejb-class>
 <transaction-type>Container</transaction-type>
 <acknowledge-mode>Auto-acknowledge</acknowledge-mode>
 <message-driven-destination>
 <destination-type>javax.jms.Queue</destination-type>
 </message-driven-destination>
 </message-driven>
 </enterprise-beans>

 <assembly-descriptor>
 <container-transaction>
 <method>
 <ejb-name>MyMDB</ejb-name>
 <method-name>onMessage</method-name>
 </method>
 <trans-attribute>Required</trans-attribute>
 </container-transaction>
 </assembly-descriptor>

</ejb-jar>

and jboss.xml :

<jboss>
 <enterprise-beans>
 <message-driven>
 <ejb-name>MyMDB</ejb-name>
 <configuration-name>Singleton Message Driven Bean</configuration-name>
 <destination-jndi-name>queue/Cmd2MuQueue</destination-jndi-name>
 </message-driven>
 </enterprise-beans>
</jboss>

First question : is it the right way ?
Second question : how I handle the fact that my mdb need to access to EJB3 classes , and these classes aren't loaded yet, so I've got an class loading error, as my EJB3 ared loaded after queue actualy.. ??

Thanks a lot for ur responses.

[dmary]

and third question, why when I put myqueue-service.xml into JBOSS_HOME/deploy-hasingleton/jms , why it doesn't hot deploy ??

[dmary]

Any help would be appreciated. ;)

[dmary]

nobody ?

[dmary]

well, i didn't found any solution at this time, is someone can help me ??

[dmary]

help !?

[justkeys]

This works for me: i pack all in one single ear: the code, and the myqueue-service.xml (this one must be mentioned in the jboss-app.xml in order toget deployed).

You should not deploy the queue in the singleton-deploy folder, but in the farm folder (like any other code). Since it depends on jms, it will only be "running" on _the_ cluster-coordinator (that runs jms in jboss 4), but all other nodes will be able to subscribe or produce into that queue.

If you want a queue that is only visible on one single node, perhaps you should think it over, and change it into service holding a java-util-Queue.