[jboss-jira] [JBoss JIRA] Commented: (JBJMX-101) failed to redeploy MBean dependent web module

[David Wade (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBJMX-101?page=comments#action_12347641 ] 
            
David Wade commented on JBJMX-101:
----------------------------------

Actually I think this is a bug.   

If a web application is declared in the jboss-web.xml as depending on  a data source (or some other service) and that data source is updated causing it to undeploy and redeploy, the web applications that have declared dependence on that datasource should be undeployed when the data source is undeployed and then redeployed after the datasource is redeployed.    i.e. the web application should not just be stopped and restarted but should be undeployed and redeployed.

The undeploying of the web application does result in it being unavailable for a short period, but this infinitely better than leaving it in a non working state due to a stale resource ref.    It seems to me that this half the reason for the dependency declaration in the first place.

Further, am sure this used to work with SAR's & HAR's

> failed to redeploy MBean dependent web module
> ---------------------------------------------
>
>                 Key: JBJMX-101
>                 URL: http://jira.jboss.com/jira/browse/JBJMX-101
>             Project: JBoss JMX
>          Issue Type: Bug
>    Affects Versions: JBossAS-4.0.0
>         Environment: JBossAS 4.0.4.GA
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_09-b01)
>            Reporter: Maxim Gordienko
>
> Environment: Sar module containing MBean
> content of META-INF/jboss-service.xml
> --- CUT ---
> <?xml version="1.0" encoding="UTF-8"?>
> <server>
>         <mbean code="dot.com.DummyKPBossService" name="dot.com:service=DummyService">
>         </mbean>
> </server>
> --- END CUT ---
> War module dependant on MBean from Sar
> content of WEB-INF/jboss-web.xml
> --- CUT ---
> <?xml version="1.0" encoding="UTF-8"?>
> <jboss-web>                                                                     
>         <depends>dot.com:service=DummyService"</depends>             
> </jboss-web>
> --- END CUT ---
> upon redeployment Sar module JBoss tries to redeploy War module but fail with NPE:
> java.lang.NullPointerException
> 	at org.jboss.web.WebModule.startModule(WebModule.java:82)
> 	at org.jboss.web.WebModule.startService(WebModule.java:61)
> 	at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
> 	at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:585)
> 	at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
> 	at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
> 	at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
> 	at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
> 	at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
> 	at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
> .......

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