Hi, I am facing a serious problem in Apache SCR 2.0.2: I have a component that requires a valid configuration. Unfortunatley, it sometimes happens that the component gets instantiated twice. I am using Eclipse Equinox 3.10.2.v20150203-1939, Felix ConfigAdmin 1.8.8 and Apache Fileinstall 3.5.2. This is my component description created by the Apache SCR Plugin: <?xml version="1.0" encoding="UTF-8"?> <scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.2.0" immediate="true" name="com.example.nodes.tree.impl.component.Component" configuration-policy="require" activate="activate" deactivate="deactivate"> <implementation class="com.example.nodes.tree.impl.component.Component"/> <service servicefactory="false"> <provide interface="com.example.nodes.tree.Tree"/> <provide interface="com.example.nodes.tree.HandlerService"/> </service> <property name="service.pid" value="com.example.nodes.tree.impl.component.Component"/> <reference name="TreeEventListener" interface="com.example.nodes.tree.eventing.TreeEventListener" cardinality="0..n" policy="dynamic" bind="bind" unbind="unbind" updated="updated"/> <reference name="DataHandler" interface="com.example.nodes.tree.spi.handler.DataHandler" cardinality="0..n" policy="dynamic" bind="bind" unbind="unbind" updated="updated"/> <reference name="ExecuteHandler" interface="com.example.nodes.tree.spi.handler.ExecuteHandler" cardinality="0..n" policy="dynamic" bind="bind" unbind="unbind" updated="updated"/> </scr:component>
com.example.nodes.tree.impl.component.Component.cfg (no factory configuration): locking.aquireTimeout.value = 30 locking.aquireTimeout.unit = SECONDS It is hard to debug. At the moment, I can only offer you the following two stack traces. As you can see SCR seems to be triggered twice. The first event comes from the framework and signals a bundle change. The second event informs SCR about the corresponding configuration creation. It must be a race condition in some place. at com.example.nodes.tree.impl.component.Component.activate(Component.java:54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:222) at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:37) at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:615) at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:499) at org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:295) at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:302) at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:113) at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:866) at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:833) at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:774) at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse$1.run(ServiceFactoryUse.java:212) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.factoryGetService(ServiceFactoryUse.java:210) at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.getService(ServiceFactoryUse.java:111) at org.eclipse.osgi.internal.serviceregistry.ServiceConsumer$2.getService(ServiceConsumer.java:45) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:496) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService(ServiceRegistry.java:461) at org.eclipse.osgi.internal.framework.BundleContextImpl.getService(BundleContextImpl.java:619) at org.apache.felix.scr.impl.manager.SingleRefPair.getServiceObject(SingleRefPair.java:72) at org.apache.felix.scr.impl.helper.BindMethod.getServiceObject(BindMethod.java:646) at org.apache.felix.scr.impl.manager.DependencyManager.getServiceObject(DependencyManager.java:2137) at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.prebind(DependencyManager.java:1048) at org.apache.felix.scr.impl.manager.DependencyManager.prebind(DependencyManager.java:1457) at org.apache.felix.scr.impl.manager.AbstractComponentManager.collectDependencies(AbstractComponentManager.java:983) at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:812) at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:724) at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:954) at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:915) at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1215) at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1136) at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:945) at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:881) at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1167) at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:120) at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109) at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:914) 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.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225) at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:464) at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:869) at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:857) at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:133) at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:915) at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:715) at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:399) at org.apache.felix.scr.impl.config.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:676) at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:339) at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:360) at org.apache.felix.scr.impl.Activator.access$000(Activator.java:53) at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:260) at org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:259) at org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:232) at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482) at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:1) at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232) at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444) at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:902) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:165) at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:75) at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:67) at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:102) at org.eclipse.osgi.container.Module.publishEvent(Module.java:466) at org.eclipse.osgi.container.Module.start(Module.java:457) at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1582) at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1562) at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1533) at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1476) at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.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) 13:16:08.733 [Start Level: Equinox Container: a04ce7b3-f0e5-0015-12b9-a18bd35d12e8] DEBUG c.e.n.t.impl.component.Component - Component successfully created. at com.example.nodes.tree.impl.component.Component.activate(Component.java:54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:222) at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:37) at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:615) at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:499) at org.apache.felix.scr.impl.helper.ActivateMethod.invoke(ActivateMethod.java:295) at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:302) at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:113) at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:866) at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:833) at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:774) at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse$1.run(ServiceFactoryUse.java:212) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.factoryGetService(ServiceFactoryUse.java:210) at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.getService(ServiceFactoryUse.java:111) at org.eclipse.osgi.internal.serviceregistry.ServiceConsumer$2.getService(ServiceConsumer.java:45) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:496) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService(ServiceRegistry.java:461) at org.eclipse.osgi.internal.framework.BundleContextImpl.getService(BundleContextImpl.java:619) at org.apache.felix.scr.impl.manager.SingleRefPair.getServiceObject(SingleRefPair.java:72) at org.apache.felix.scr.impl.helper.BindMethod.getServiceObject(BindMethod.java:646) at org.apache.felix.scr.impl.manager.DependencyManager.getServiceObject(DependencyManager.java:2137) at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.prebind(DependencyManager.java:1048) at org.apache.felix.scr.impl.manager.DependencyManager.prebind(DependencyManager.java:1457) at org.apache.felix.scr.impl.manager.AbstractComponentManager.collectDependencies(AbstractComponentManager.java:983) at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:812) at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:724) at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:954) at org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:915) at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1215) at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1136) at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:945) at org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:881) at org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1167) at org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:120) at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109) at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:914) 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.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127) at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225) at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:464) at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:869) at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:857) at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:133) at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:915) at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:715) at org.apache.felix.scr.impl.manager.SingleComponentManager.reconfigure(SingleComponentManager.java:627) at org.apache.felix.scr.impl.manager.SingleComponentManager.reconfigure(SingleComponentManager.java:566) at org.apache.felix.scr.impl.config.ConfigurableComponentHolder.configurationUpdated(ConfigurableComponentHolder.java:419) at org.apache.felix.scr.impl.config.ConfigurationSupport.configurationEvent(ConfigurationSupport.java:391) at org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.sendEvent(ConfigurationManager.java:2046) at org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.run(ConfigurationManager.java:2014) at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:143) at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:110) at java.lang.Thread.run(Thread.java:745) 13:16:08.749 [CM Event Dispatcher (Fire ConfigurationEvent: pid=com.example.nodes.tree.impl.component.Component)] DEBUG c.e.n.t.impl.component.Component - Component successfully created. This issue is a blocker for me... Can anybody please help me figuring out what is the problem's source. Maybe the problem is on my side. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@felix.apache.org For additional commands, e-mail: users-h...@felix.apache.org