import akka.actor.ActorSystem;
import akka.dispatch.OnComplete;
import akka.util.Timeout;
+import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import org.opendaylight.controller.cluster.datastore.identifiers.ShardManagerIdentifier;
import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
LOG.debug("Registering listener: {} for path: {} scope: {}", listener, path, scope);
- ActorRef dataChangeListenerActor = actorContext.getActorSystem().actorOf(
- DataChangeListener.props(listener ));
-
String shardName = ShardStrategyFactory.getStrategy(path).findShard(path);
- Future future = actorContext.executeLocalShardOperationAsync(shardName,
- new RegisterChangeListener(path, dataChangeListenerActor.path(), scope),
- new Timeout(actorContext.getOperationDuration().$times(
- REGISTER_DATA_CHANGE_LISTENER_TIMEOUT_FACTOR)));
+ Optional<ActorRef> shard = actorContext.findLocalShard(shardName);
+
+ //if shard is NOT local
+ if (!shard.isPresent()) {
+ LOG.debug("No local shard for shardName {} was found so returning a noop registration", shardName);
+ return new NoOpDataChangeListenerRegistration(listener);
+ }
+ //if shard is local
+ ActorRef dataChangeListenerActor = actorContext.getActorSystem().actorOf(DataChangeListener.props(listener));
+ Future future = actorContext.executeOperationAsync(shard.get(),
+ new RegisterChangeListener(path, dataChangeListenerActor.path(), scope),
+ new Timeout(actorContext.getOperationDuration().$times(REGISTER_DATA_CHANGE_LISTENER_TIMEOUT_FACTOR)));
- if (future != null) {
- final DataChangeListenerRegistrationProxy listenerRegistrationProxy =
+ final DataChangeListenerRegistrationProxy listenerRegistrationProxy =
new DataChangeListenerRegistrationProxy(listener, dataChangeListenerActor);
- future.onComplete(new OnComplete(){
+ future.onComplete(new OnComplete() {
- @Override public void onComplete(Throwable failure, Object result)
+ @Override
+ public void onComplete(Throwable failure, Object result)
throws Throwable {
- if(failure != null){
- LOG.error("Failed to register listener at path " + path.toString(), failure);
- return;
- }
- RegisterChangeListenerReply reply = (RegisterChangeListenerReply) result;
- listenerRegistrationProxy.setListenerRegistrationActor(actorContext
- .actorSelection(reply.getListenerRegistrationPath()));
+ if (failure != null) {
+ LOG.error("Failed to register listener at path " + path.toString(), failure);
+ return;
}
- }, actorContext.getActorSystem().dispatcher());
- return listenerRegistrationProxy;
- }
+ RegisterChangeListenerReply reply = (RegisterChangeListenerReply) result;
+ listenerRegistrationProxy.setListenerRegistrationActor(actorContext
+ .actorSelection(reply.getListenerRegistrationPath()));
+ }
+ }, actorContext.getActorSystem().dispatcher());
- LOG.debug(
- "No local shard for shardName {} was found so returning a noop registration",
- shardName);
+ return listenerRegistrationProxy;
- return new NoOpDataChangeListenerRegistration(listener);
}
@Override