Robert Munteanu created OAK-8529:
------------------------------------

             Summary: Eagerly deregister MBeans on SecurityProviderRegistration 
deactivation
                 Key: OAK-8529
                 URL: https://issues.apache.org/jira/browse/OAK-8529
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: security
            Reporter: Robert Munteanu
            Assignee: Robert Munteanu
             Fix For: 1.18.0


The SecurityProviderRegistration is prone to being activated and deactivated 
during a regular Sling application startup ( for a prolonged discussion see 
SLING-7811 ). The instance should fully cleanup after itself to make sure it 
will be usable after an activate/deactive cycle.

In practice the MBeans remain registered and prevent a further registration 
with errors such as

{noformat}6.08.2019 09:43:51.051 *ERROR* [CM Event Dispatcher (Fire 
ConfigurationEvent: 
pid=org.apache.jackrabbit.oak.security.authentication.AuthenticationConfigurationImpl)]
 org.apache.aries.jmx.whiteboard.MBeanHolder register: Failure registering 
MBean org.apache.aries.jmx.util.shared.RegistrableStandardEmitterMBean@45011485 
javax.management.InstanceAlreadyExistsException: 
org.apache.jackrabbit.oak:name=LoginModule statistics,type=LoginModuleStats
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
        at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
        at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
        at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
        at 
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
        at 
com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
        at 
org.apache.aries.jmx.whiteboard.MBeanHolder.register(MBeanHolder.java:114)
        at 
org.apache.aries.jmx.whiteboard.JmxWhiteboardSupport.registerMBean(JmxWhiteboardSupport.java:88)
        at 
org.apache.aries.jmx.whiteboard.Activator$MBeanTracker.addingService(Activator.java:102)
        at 
org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:943)
        at 
org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:871)
        at 
org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
        at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)
        at 
org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:903)
        at 
org.apache.felix.framework.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:990)
        at 
org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:838)
        at 
org.apache.felix.framework.EventDispatcher.fireServiceEvent(EventDispatcher.java:545)
        at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4833)
        at org.apache.felix.framework.Felix.registerService(Felix.java:3804)
        at 
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:328)
        at 
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:302)
        at 
org.apache.jackrabbit.oak.osgi.OsgiWhiteboard.register(OsgiWhiteboard.java:79)
        at 
org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardUtils.registerMBean(WhiteboardUtils.java:115)
 [org.apache.jackrabbit.oak-core-spi:1.16.0]
        at 
org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardUtils.registerMBean(WhiteboardUtils.java:99)
 [org.apache.jackrabbit.oak-core-spi:1.16.0]
        at 
org.apache.jackrabbit.oak.security.internal.SecurityProviderRegistration.maybeRegister(SecurityProviderRegistration.java:539)
        at 
org.apache.jackrabbit.oak.security.internal.SecurityProviderRegistration.activate(SecurityProviderRegistration.java:191)
        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:498)
        at 
org.apache.felix.scr.impl.inject.methods.BaseMethod.invokeMethod(BaseMethod.java:228)
        at 
org.apache.felix.scr.impl.inject.methods.BaseMethod.access$500(BaseMethod.java:41)
        at 
org.apache.felix.scr.impl.inject.methods.BaseMethod$Resolved.invoke(BaseMethod.java:664)
        at 
org.apache.felix.scr.impl.inject.methods.BaseMethod.invoke(BaseMethod.java:510)
        at 
org.apache.felix.scr.impl.inject.methods.ActivateMethod.invoke(ActivateMethod.java:317)
        at 
org.apache.felix.scr.impl.inject.methods.ActivateMethod.invoke(ActivateMethod.java:307)
        at 
org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:340)
        at 
org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:114)
        at 
org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:982)
        at 
org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:955)
        at 
org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:765)
        at 
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:1045)
        at 
org.apache.felix.scr.impl.manager.DependencyManager$SingleStaticCustomizer.addedService(DependencyManager.java:999)
        at 
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1216)
        at 
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.customizerAdded(ServiceTracker.java:1137)
        at 
org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.trackAdding(ServiceTracker.java:944)
        at 
org.apache.felix.scr.impl.manager.ServiceTracker$AbstractTracked.track(ServiceTracker.java:880)
        at 
org.apache.felix.scr.impl.manager.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:1168)
        at 
org.apache.felix.scr.impl.BundleComponentActivator$ListenerInfo.serviceChanged(BundleComponentActivator.java:125)
        at 
org.apache.felix.framework.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:990)
        at 
org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:838)
        at 
org.apache.felix.framework.EventDispatcher.fireServiceEvent(EventDispatcher.java:545)
        at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4833)
        at org.apache.felix.framework.Felix.registerService(Felix.java:3804)
        at 
org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:328)
        at 
org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:906)
        at 
org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:892)
        at 
org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:128)
        at 
org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:959)
        at 
org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:732)
        at 
org.apache.felix.scr.impl.manager.SingleComponentManager.reconfigure(SingleComponentManager.java:734)
        at 
org.apache.felix.scr.impl.manager.SingleComponentManager.reconfigure(SingleComponentManager.java:673)
        at 
org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.configurationUpdated(ConfigurableComponentHolder.java:435)
        at 
org.apache.felix.scr.impl.manager.RegionConfigurationSupport.configurationEvent(RegionConfigurationSupport.java:316)
        at 
org.apache.felix.scr.impl.manager.RegionConfigurationSupport$2.configurationEvent(RegionConfigurationSupport.java:118)
        at 
org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.sendEvent(ConfigurationManager.java:1704)
        at 
org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.run(ConfigurationManager.java:1646)
        at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:138)
        at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:105)
        at java.lang.Thread.run(Thread.java:748)
{noformat}

I will propose a patch shortly.



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