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Posted to dev@felix.apache.org by "Tom Watson (Jira)" <ji...@apache.org> on 2020/03/23 13:12:00 UTC
[jira] [Resolved] (FELIX-6241) IllegalStateException can be thrown
from listener if BundleContext is invalid
[ https://issues.apache.org/jira/browse/FELIX-6241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tom Watson resolved FELIX-6241.
-------------------------------
Fix Version/s: scr-2.1.18
Assignee: Tom Watson
Resolution: Fixed
> IllegalStateException can be thrown from listener if BundleContext is invalid
> -----------------------------------------------------------------------------
>
> Key: FELIX-6241
> URL: https://issues.apache.org/jira/browse/FELIX-6241
> Project: Felix
> Issue Type: Improvement
> Components: Declarative Services (SCR)
> Affects Versions: scr-2.1.16
> Reporter: Tom Watson
> Assignee: Tom Watson
> Priority: Major
> Fix For: scr-2.1.18
>
>
> If a bundle is stopped on one thread and SCR service listener is responding to service events on another thread it is possible to see the following exception get fired as a FrameworkEvent Error:
>
> {{FrameworkEvent ERROR java.lang.IllegalStateException: BundleContext is no longer valid}}
> {{ at org.eclipse.osgi.internal.framework.BundleContextImpl.checkValid(BundleContextImpl.java:1055)}}
> {{ at org.eclipse.osgi.internal.framework.BundleContextImpl.ungetService(BundleContextImpl.java:726)}}
> {{ at org.apache.felix.scr.impl.manager.SingleRefPair.ungetServiceObjects(SingleRefPair.java:72)}}
> {{ at org.apache.felix.scr.impl.manager.DependencyManager$AbstractCustomizer.ungetService(DependencyManager.java:226)}}
> {{ at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.removedService(DependencyManager.java:399)}}
> {{ at org.apache.felix.scr.impl.manager.DependencyManager$MultipleDynamicCustomizer.removedService(DependencyManager.java:294)}}
> {{ at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1242)}}
> {{ at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:1137)}}
> {{ at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.untrack(ServiceTracker.java:997)}}
> {{ at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1176)}}
> {{ at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125)}}
> {{ at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:113)}}
> {{ at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:985)}}
> {{ at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:234)}}
> {{ at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)}}
> {{ at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:896)}}
> {{ at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:834)}}
> {{ at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:227)}}
>
> The IllegalStateException should be caught here and ignored when trying to unget a service. A similar IllegalStateException is caught and ignored when using ServiceObjects with {{org.apache.felix.scr.impl.manager.AbstractPrototypeRefPair.doUngetService(ScrComponentContext, T)}}
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