adding JMS support to the stock standalone.xml in wildfly 8

The stock standalone.xml configuration doesn't contain JMS support by default but standalone-full.xml. I thought of adding the messaging subsystem to the default configuration to make it easy. Here's how to do it :

The WildFly server would instantiate the JMS subsystem when you simply add the messaging subsystem with <hornetq-server />, as follows :

<subsystem xmlns="urn:jboss:domain:messaging:1.4">
   <hornetq-server />
</subsystem>

However, adding the above configuration alone would not suffice. You have to tell the server to load the messaging module, which contains necessary libraries to host the JMS subsystem. We have to define the messaging module under the list of "extentions".

<extensions>
    ....
    ....
    <extension module="org.jboss.as.messaging"/>
</extensions>

Although this configuration would accommodate JMS support in the server, it would still not support MDB deployment. The next step to define and configure an MDB container. 
   
<subsystem xmlns="urn:jboss:domain:ejb3:2.0">
   ....
   ....
   <mdb>
      <resource-adapter-ref resource-adapter-name="hornetq-ra"/>
      <bean-instance-pool-ref pool-name="mdb-strict-max-pool"/>
   </mdb>
   <pools>
      <bean-instance-pools>
         <strict-max-pool name="slsb-strict-max-pool" max-pool-size="20" instance-acquisition-timeout="5" instance-acquisition-timeout-unit="MINUTES"/>
         <strict-max-pool name="mdb-strict-max-pool" max-pool-size="20" instance-acquisition-timeout="5" instance-acquisition-timeout-unit="MINUTES"/>
      </bean-instance-pools>
   </pools>
</subsystem>

The bean instance pools have already been defined in the stock standlone.xml file but you need to configure the MDB container within <mdb />.