LifeCycle events

[george80]

I'am porting an application from weblogic to jboss, and I
have a problem with the lifecycle events. Weblogic has a
feature for handling lifecycle management. This feature is
called "Application lifecycle listener events" and it provide
handles on which developers can control behavior during
deployment, undeployment, and redeployment.
I asked about this before on the Jboss site, and I got the
answer to use the subdeployers. So what I did was to write a
class that extends the SubDeployerSupport and overrides the
start() and stop() methods. But I can't get it to work so
I'am wondering if I have missed something.

Here is why I want to do this.

Some of my enterprise applications need to run some code when the application is deployed or undeployed. For example when the subscription realm is deployed I want to start a periodic timer to cleanup any subscriptions that are marked for delete. When the subscription realm is undeployed I want to cancel this timer and run a final cleanup action.

Thanks in advance/George

[dimitris]

You only write a SubDeployer if you need to plugin a new package type to jboss (e.g. .myear).

SubDeployers, however, produce notifications whenever something gets deployed/undeployed. For example, to see those notification from the .war deployer, using the NotificationListener mbean, use:

 <mbean code="org.jboss.monitor.services.NotificationListener"
 name="jboss.monitor:service=NotificationListener">

 <attribute name="SubscriptionList">
 <subscription-list>
 <mbean name="jboss.web:service=WebServer">
 <filter factory="NotificationFilterSupportFactory">
 <enable type="org.jboss.deployment.SubDeployer.start"/>
 <enable type="org.jboss.deployment.SubDeployer.stop"/>
 </filter>
 </mbean>
 </subscription-list>
 </attribute>
 </mbean>

If you want a different package type (e.g. .sar) configure the corresponding subdeployer objectname.

So either implement a listener mbean and re-act to those notifications using:

http://wiki.jboss.org/wiki/Wiki.jsp?page=ListenerServiceMBeanSupport

or a normal mbean that will be started/stopped in tandem with the deployment/undeployment by using the new barrier controller service:
http://wiki.jboss.org/wiki/Wiki.jsp?page=BarrierController