Multiple ClassCastException(s) when invoking OSGi Service-Hooks (EventHook, FindHook) -------------------------------------------------------------------------------------
Key: FELIX-3220 URL: https://issues.apache.org/jira/browse/FELIX-3220 Project: Felix Issue Type: Bug Components: Framework Affects Versions: framework-4.0.1 Environment: Enable OSGi Security, using Felix security bundle version 2.0.0 Reporter: Michael Hirsch Priority: Critical Fix For: framework-4.2.0 *Scenario:* - Register a EventHook in the OSGi service registry as described in the OSGi core specification 4.2. - Run felix with a SecurityManager - The framework is not calling the EventHook during framework service (register, modify, and unregister service) operations. *Expected Behavior* - The framework code calls the EventHook during framework service (register, modify, and unregister service) operations. *Current Behavior:* - A ClassCastException occurs in the framework code org.apache.felix.framework.util.SecureAction:1628 - Logged on "WARNING" Level *Probably Caused By:* The ClassCastException is caused by calling the wrong setter-method within the org.apache.felix.framework.util.SecureAction:1135 class. The ServiceEvent will never be set which causes that in line 1628 when invoking the EventHook the ServiceEvent argument is missing and parameters for the EventHook will be casted wrong. Method: org.apache.felix.framework.util.SecureAction # invokeServiceEventHook {code} public void invokeServiceEventHook( org.osgi.framework.hooks.service.EventHook eh, ServiceEvent event, Collection<BundleContext> contexts) throws Exception { .... actions.set(Actions.INVOKE_SERVICE_EVENT_HOOK, eh, contexts); .... } {code} Method: org.apache.felix.framework.util.SecureAction.Actions # run has wrong arguments: arg1 = EventHook arg2 = Collection<BundleContext> arg3 = null {code} case INVOKE_SERVICE_EVENT_HOOK: ((org.osgi.framework.hooks.service.EventHook) arg1).event( (ServiceEvent) arg2, (Collection<BundleContext>) arg3); return null; {code} *Solution:* Changing the method of setting the arguments for the Action class. Set also the ServiceEvent! {code} public void invokeServiceEventHook( org.osgi.framework.hooks.service.EventHook eh, ServiceEvent event, Collection<BundleContext> contexts) throws Exception { .... actions.set(Actions.INVOKE_SERVICE_EVENT_HOOK, eh, event, contexts); .... } {code} *Additional:* # Meanwhile investigating code I found that also invoking the ServiceEventListenerHook has probably the same behavior! When calling the setter-method for setting the arguments for the Action class there is missing the ServiceEvent. # Invoking FindHook using wrong action constant which causes a ClassCastException! Actions.INVOKE_SERVICE_EVENT_HOOK need to be changed to Actions.INVOKE_SERVICE_FIND_HOOK {code} public void invokeServiceFindHook( org.osgi.framework.hooks.service.FindHook fh, BundleContext context, String name, String filter, boolean allServices, Collection<ServiceReference<?>> references) throws Exception {.... actions.set( Actions.INVOKE_SERVICE_EVENT_HOOK, fh, context, name, filter, (allServices) ? Boolean.TRUE : Boolean.FALSE, references); ....} {code} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira