[KARAF-5211] NPE in StoredWiringResolver if BundleEvent.UNRESOLVED handled before BundleEvent.RESOLVED event

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.1, 4.2.0.M1
• Fix Version/s: 4.1.2, 4.2.0.M1
• Component/s: karaf
• Assignee: Jean-Baptiste Onofré
• Reporter: Christopher Lockard
• Created: 16/Jun/17 00:13
• Updated: 14/Sep/18 15:13
• Resolved: 23/Jun/17 12:21

Description

When upgrading from karaf-4.0.7 to karaf-4.1.1 we are seeing several NPE exceptions in the log related to Activator handling BundleEvent.UNRESOLVED before BundleEvent.RESOLVED events are recieved. This results in a NPE in StoredWiringResolver.delete(...) since the wiring map doesn't contain the bundleId.

16:26:50,110 | ERROR | blisher@704deff2 | org.eclipse.osgi     | FrameworkEvent ERROR - org.eclipse.osgi
java.lang.NullPointerException
        at org.apache.karaf.features.extension.StoredWiringResolver.delete(StoredWiringResolver.java:110) [?:?]
        at org.apache.karaf.features.extension.Activator.bundleChanged(Activator.java:53) [?:?]
        at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:903) [?:?]
        at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) [?:?]
        at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) [?:?]
        at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:213) [?:?]
        at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:120) [?:?]
        at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:112) [?:?]
        at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:156) [?:?]
        at org.eclipse.osgi.container.ModuleContainer.unresolve0(ModuleContainer.java:936) [?:?]
        at org.eclipse.osgi.container.ModuleContainer.unresolve(ModuleContainer.java:788) [?:?]
        at org.eclipse.osgi.container.ModuleContainer.refresh(ModuleContainer.java:985) [?:?]
        at org.eclipse.osgi.container.ModuleContainer$ContainerWiring.dispatchEvent(ModuleContainer.java:1368) [?:?]
        at org.eclipse.osgi.container.ModuleContainer$ContainerWiring.dispatchEvent(ModuleContainer.java:1) [?:?]
        at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) [?:?]
        at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340) [?:?]