When using the jopr JBoss AS plugin the following exception is reported:
2008-11-27 20:23:03,086 WARN [ConfigurationManager.threadpool-1] (rhq.core.pc.configuration.ConfigurationCheckExecutor)- Unable to check for updated configuration
java.lang.NullPointerException
at org.rhq.plugins.jbossas.AbstractMessagingComponent.loadResourceConfiguration(AbstractMessagingComponent.java:130)
at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:450)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)
It seems that the failing line is this:
String version = jf.getManifest().getMainAttributes().getValue(Attributes.Name.IMPLEMENTATION_VERSION);
The result is that no packages are retrieved for the JBoss AS instance being monitored.
Surrounding the block of code that attempts to retrieve the manifest solves this issue.
I haven't debugged the issue further but it might seem like jars without a manifest cant be handled by the plugin?
