import akka.actor.ActorRef;
import akka.actor.ActorSelection;
-import com.google.common.base.Optional;
-import com.google.common.collect.Sets;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Map.Entry;
-import java.util.Set;
-import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
+import org.opendaylight.controller.cluster.datastore.actors.DataTreeNotificationListenerRegistrationActor;
import org.opendaylight.controller.cluster.datastore.messages.RegisterDataTreeChangeListener;
-import org.opendaylight.controller.cluster.datastore.messages.RegisterDataTreeChangeListenerReply;
import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
-import org.opendaylight.yangtools.concepts.ListenerRegistration;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
final class DataTreeChangeListenerSupport extends AbstractDataListenerSupport<DOMDataTreeChangeListener,
- RegisterDataTreeChangeListener, DelayedDataTreeListenerRegistration,
- ListenerRegistration<DOMDataTreeChangeListener>> {
-
- private final Set<ActorSelection> listenerActors = Sets.newConcurrentHashSet();
+ RegisterDataTreeChangeListener> {
DataTreeChangeListenerSupport(final Shard shard) {
super(shard);
}
- Collection<ActorSelection> getListenerActors() {
- return new ArrayList<>(listenerActors);
- }
-
@Override
- ListenerRegistration<DOMDataTreeChangeListener> createDelegate(
- final RegisterDataTreeChangeListener message) {
- final ActorSelection dataChangeListenerPath = selectActor(message.getDataTreeChangeListenerPath());
-
- // Notify the listener if notifications should be enabled or not
- // If this shard is the leader then it will enable notifications else
- // it will not
- dataChangeListenerPath.tell(new EnableNotification(true), getSelf());
-
- // Now store a reference to the data change listener so it can be notified
- // at a later point if notifications should be enabled or disabled
- if (!message.isRegisterOnAllInstances()) {
- addListenerActor(dataChangeListenerPath);
- }
+ void doRegistration(final RegisterDataTreeChangeListener message, final ActorRef registrationActor) {
+ final ActorSelection listenerActor = processListenerRegistrationMessage(message);
- DOMDataTreeChangeListener listener = new ForwardingDataTreeChangeListener(dataChangeListenerPath);
+ DOMDataTreeChangeListener listener = new ForwardingDataTreeChangeListener(listenerActor);
- log().debug("{}: Registering for path {}", persistenceId(), message.getPath());
+ log().debug("{}: Registering listenerActor {} for path {}", persistenceId(), listenerActor, message.getPath());
- Entry<ListenerRegistration<DOMDataTreeChangeListener>, Optional<DataTreeCandidate>> regEntry =
- getShard().getDataStore().registerTreeChangeListener(message.getPath(), listener);
-
- getShard().getDataStore().notifyOfInitialData(message.getPath(),
- regEntry.getKey().getInstance(), regEntry.getValue());
-
- listenerActors.add(dataChangeListenerPath);
- final ListenerRegistration<DOMDataTreeChangeListener> delegate = regEntry.getKey();
- return new ListenerRegistration<DOMDataTreeChangeListener>() {
- @Override
- public DOMDataTreeChangeListener getInstance() {
- return delegate.getInstance();
- }
-
- @Override
- public void close() {
- listenerActors.remove(dataChangeListenerPath);
- delegate.close();
- }
- };
- }
-
- @Override
- protected DelayedDataTreeListenerRegistration newDelayedListenerRegistration(
- RegisterDataTreeChangeListener message) {
- return new DelayedDataTreeListenerRegistration(message);
- }
-
- @Override
- protected ActorRef newRegistrationActor(ListenerRegistration<DOMDataTreeChangeListener> registration) {
- return createActor(DataTreeChangeListenerRegistrationActor.props(registration));
- }
-
- @Override
- protected Object newRegistrationReplyMessage(ActorRef registrationActor) {
- return new RegisterDataTreeChangeListenerReply(registrationActor);
+ final ShardDataTree shardDataTree = getShard().getDataStore();
+ shardDataTree.registerTreeChangeListener(message.getPath(),
+ listener, shardDataTree.readCurrentData(), registration -> registrationActor.tell(
+ new DataTreeNotificationListenerRegistrationActor.SetRegistration(registration, () ->
+ removeListenerActor(listenerActor)), ActorRef.noSender()));
}
@Override