Refactor Register*ListenerReply classes

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / DataTreeChangeListenerSupport.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DataTreeChangeListenerSupport.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DataTreeChangeListenerSupport.java
index 9a44b47e7e9257222804ed46c1e08ccaabdbf322..8dba00547f6926d554f7a753a56d9c0a4869d018 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DataTreeChangeListenerSupport.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/DataTreeChangeListenerSupport.java
@@ -9,89 +9,30 @@ package org.opendaylight.controller.cluster.datastore;
 
 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