Hi Team Our application is using Blueprint to inject the services exposed by a bean to the other bean and in some application runs, we see below exceptions. After browsing online articles, the highlighted exception indicates that the backend service implementation is not available in the OSGi registry.
Just wondering how a bundle can be in active state when the backend implementation(i.e., dependent service) is not available during Karaf start up? Is there a case, the backend implementation can be un-registered from OSGi registry without stopping the bundle exposed the service during runtime? As we are sure that none of the bundles is stopped. Are there any recovery mechanisms? Is it correct to attempt reading the service from the OSGi registry for a definite number of times? Bundle ordering issues leads to these exceptions? We are assuming the ordering will be taken care by the blueprint (If a dependent service is not available, it waits till 5 minutes(default), post which it throws timeout exceptions, we do not see any timeout exceptions during start up) 2017-09-19 11:41:53,886 | ERROR | -dispatcher-9722 | DataTreeChangeListenerActor | 212 - org.opendaylight.controller.sal-distributed-datastore - 1.4.3.Boron-SR3 | Error notifying listener org.opendaylight.controller.md.sal.binding.impl.BindingDOMDataTreeChangeListenerAdapter@72586e4e<mailto:org.opendaylight.controller.md.sal.binding.impl.BindingDOMDataTreeChangeListenerAdapter@72586e4e> org.osgi.service.blueprint.container.ServiceUnavailableException: The Blueprint container is being or has been destroyed: (objectClass=org.opendaylight.controller.md.sal.binding.api.NotificationPublishService) at org.apache.aries.blueprint.container.ReferenceRecipe.getService(ReferenceRecipe.java:241)[15:org.apache.aries.blueprint.core:1.6.1] at org.apache.aries.blueprint.container.ReferenceRecipe.access$000(ReferenceRecipe.java:56)[15:org.apache.aries.blueprint.core:1.6.1] at org.apache.aries.blueprint.container.ReferenceRecipe$ServiceDispatcher.call(ReferenceRecipe.java:306)[15:org.apache.aries.blueprint.core:1.6.1] at Proxy45e3a4cb_f3e4_4016_8f9f_bd0a4c6df5b8.putNotification(Unknown Source)[:] at com.adva.ensemble.controller.eventmgr.impl.EventHistoryTreeChangeListner.onDataTreeChanged(EventHistoryTreeChangeListner.java:57)[392:com.adva.ensemble.controller.event-mgr-impl:17.1.1.339] at org.opendaylight.controller.md.sal.binding.impl.BindingDOMDataTreeChangeListenerAdapter.onDataTreeChanged(BindingDOMDataTreeChangeListenerAdapter.java:41)[182:org.opendaylight.controller.sal-binding-broker-impl:1.4.3.Boron-SR3] at org.opendaylight.controller.cluster.datastore.DataTreeChangeListenerActor.dataChanged(DataTreeChangeListenerActor.java:58)[212:org.opendaylight.controller.sal-distributed-datastore:1.4.3.Boron-SR3] at org.opendaylight.controller.cluster.datastore.DataTreeChangeListenerActor.handleReceive(DataTreeChangeListenerActor.java:40)[212:org.opendaylight.controller.sal-distributed-datastore:1.4.3.Boron-SR3] at org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor.onReceive(AbstractUntypedActor.java:26)[206:org.opendaylight.controller.sal-clustering-commons:1.4.3.Boron-SR3] at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:165)[194:com.typesafe.akka.actor:2.4.7] at akka.actor.Actor$class.aroundReceive(Actor.scala:484)[194:com.typesafe.akka.actor:2.4.7] at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)[194:com.typesafe.akka.actor:2.4.7] at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)[194:com.typesafe.akka.actor:2.4.7] at akka.actor.ActorCell.invoke(ActorCell.scala:495)[194:com.typesafe.akka.actor:2.4.7] at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)[194:com.typesafe.akka.actor:2.4.7] at akka.dispatch.Mailbox.run(Mailbox.scala:224)[194:com.typesafe.akka.actor:2.4.7] at akka.dispatch.Mailbox.exec(Mailbox.scala:234)[194:com.typesafe.akka.actor:2.4.7] at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)[190:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8] at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)[190:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8] at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)[190:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8] at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)[190:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8] Let me know if you need more information. Thanks in advance. Regards Vikram
