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From "Bram de Kruijff (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACE-276) Disabling activator is managementagent triggers NullPointerException on shutdown
Date Sun, 20 May 2012 14:10:41 GMT
Bram de Kruijff created ACE-276:
-----------------------------------

             Summary: Disabling activator is managementagent triggers NullPointerException
on shutdown
                 Key: ACE-276
                 URL: https://issues.apache.org/jira/browse/ACE-276
             Project: ACE
          Issue Type: Bug
    Affects Versions: 0.8.0
            Reporter: Bram de Kruijff


The managementagent activator support disabling hardcoded activators through system properties.
When the package is "disabled" the start() is never called. However, on destroy all activators
receive a stop() regardless whether they where started or not. In the case of a dm activator
this will trigger a NPE. 

Obviously we must not call stop() on activators that never received a start().

{code}
ERROR: Bundle org.apache.ace.managementagent [21] Error stopping bundle. (java.lang.NullPointerException)
java.lang.NullPointerException
        at org.apache.felix.dm.DependencyActivatorBase.cleanup(DependencyActivatorBase.java:299)
ERROR: Bundle org.apache.ace.managementagent [21] EventDispatcher: Error during dispatch.
(java.lang.IllegalStateException: Invalid BundleContext.)
        at org.apache.felix.dm.DependencyActivatorBase.stop(DependencyActivatorBase.java:90)
ERROR: Bundle org.apache.ace.managementagent [21] EventDispatcher: Error during dispatch.
(java.lang.IllegalStateException: Invalid BundleContext.)
ERROR: Bundle org.apache.ace.managementagent [21] EventDispatcher: Error during dispatch.
(java.lang.IllegalStateException: Invalid BundleContext.)
        at org.apache.ace.managementagent.Activator.destroy(Activator.java:62)
        at org.apache.felix.dm.DependencyActivatorBase.stop(DependencyActivatorBase.java:89)
        at org.apache.felix.framework.util.SecureAction.stopActivator(SecureAction.java:663)
        at org.apache.felix.framework.Felix.stopBundle(Felix.java:2361)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1214)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:295)
        at java.lang.Thread.run(Thread.java:722)
java.lang.IllegalStateException: Invalid BundleContext.
ERROR: Bundle org.apache.ace.managementagent [21] EventDispatcher: Error during dispatch.
(java.lang.IllegalStateException: Invalid BundleContext.)
        at org.apache.felix.framework.BundleContextImpl.checkValidity(BundleContextImpl.java:514)
        at org.apache.felix.framework.BundleContextImpl.ungetService(BundleContextImpl.java:473)
ERROR: Bundle org.apache.ace.managementagent [21] EventDispatcher: Error during dispatch.
(java.lang.IllegalStateException: Invalid BundleContext.)
ERROR: Bundle org.apache.ace.managementagent [21] EventDispatcher: Error during dispatch.
(java.lang.IllegalStateException: Invalid BundleContext.)
        at org.apache.felix.dm.impl.Logger.serviceChanged(Logger.java:193)
        at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932)
        at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:793)
        at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:543)
        at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4260)
        at org.apache.felix.framework.Felix.access$000(Felix.java:74)
        at org.apache.felix.framework.Felix$1.serviceChanged(Felix.java:390)
        at org.apache.felix.framework.ServiceRegistry.unregisterService(ServiceRegistry.java:148)
        at org.apache.felix.framework.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:127)
        at org.apache.felix.framework.ServiceRegistry.unregisterServices(ServiceRegistry.java:191)
        at org.apache.felix.framework.Felix.stopBundle(Felix.java:2386)
        at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1214)
        at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:295)
        at java.lang.Thread.run(Thread.java:722)
{code}

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