Tom Watson created FELIX-6241:
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Summary: 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
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{{FrameworkEvent ERROR java.lang.IllegalStateException: BundleContext is no
longer valid}}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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