Simplify DTCL registration support classes

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

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractDataListenerSupport.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractDataListenerSupport.java
deleted file mode 100644 (file)
index 5a09b87..0000000
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/AbstractDataListenerSupport.java
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * Copyright (c) 2015 Brocade Communications Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.cluster.datastore;
-
-import akka.actor.ActorRef;
-import akka.actor.ActorSelection;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.EventListener;
-import java.util.concurrent.ConcurrentHashMap;
-import org.opendaylight.controller.cluster.datastore.actors.DataTreeNotificationListenerRegistrationActor;
-import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
-import org.opendaylight.controller.cluster.datastore.messages.ListenerRegistrationMessage;
-import org.opendaylight.controller.cluster.datastore.messages.RegisterDataTreeNotificationListenerReply;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-abstract class AbstractDataListenerSupport<L extends EventListener, M extends ListenerRegistrationMessage>
-        extends LeaderLocalDelegateFactory<M> {
-    private final Logger log = LoggerFactory.getLogger(getClass());
-
-    private final Collection<DelayedListenerRegistration<L, M>> delayedListenerRegistrations =
-            ConcurrentHashMap.newKeySet();
-    private final Collection<DelayedListenerRegistration<L, M>> delayedListenerOnAllRegistrations =
-            ConcurrentHashMap.newKeySet();
-    private final Collection<ActorSelection> leaderOnlyListenerActors = ConcurrentHashMap.newKeySet();
-    private final Collection<ActorSelection> allListenerActors = ConcurrentHashMap.newKeySet();
-
-    protected AbstractDataListenerSupport(Shard shard) {
-        super(shard);
-    }
-
-    Collection<ActorSelection> getListenerActors() {
-        return new ArrayList<>(allListenerActors);
-    }
-
-    @Override
-    void onLeadershipChange(boolean isLeader, boolean hasLeader) {
-        log.debug("{}: onLeadershipChange, isLeader: {}, hasLeader : {}", persistenceId(), isLeader, hasLeader);
-
-        final EnableNotification msg = new EnableNotification(isLeader, persistenceId());
-        for (ActorSelection dataChangeListener : leaderOnlyListenerActors) {
-            dataChangeListener.tell(msg, getSelf());
-        }
-
-        if (hasLeader) {
-            for (DelayedListenerRegistration<L, M> reg : delayedListenerOnAllRegistrations) {
-                reg.doRegistration(this);
-            }
-
-            delayedListenerOnAllRegistrations.clear();
-        }
-
-        if (isLeader) {
-            for (DelayedListenerRegistration<L, M> reg : delayedListenerRegistrations) {
-                reg.doRegistration(this);
-            }
-
-            delayedListenerRegistrations.clear();
-        }
-    }
-
-    @Override
-    void onMessage(M message, boolean isLeader, boolean hasLeader) {
-        log.debug("{}: {} for {}, isLeader: {}, hasLeader: {}", persistenceId(), logName(), message,
-                isLeader, hasLeader);
-
-        ActorRef registrationActor = createActor(DataTreeNotificationListenerRegistrationActor.props());
-
-        if (hasLeader && message.isRegisterOnAllInstances() || isLeader) {
-            doRegistration(message, registrationActor);
-        } else {
-            log.debug("{}: Shard is not the leader - delaying registration", persistenceId());
-
-            DelayedListenerRegistration<L, M> delayedReg =
-                    new DelayedListenerRegistration<>(message, registrationActor);
-            Collection<DelayedListenerRegistration<L, M>> delayedRegList;
-            if (message.isRegisterOnAllInstances()) {
-                delayedRegList = delayedListenerOnAllRegistrations;
-            } else {
-                delayedRegList = delayedListenerRegistrations;
-            }
-
-            delayedRegList.add(delayedReg);
-            registrationActor.tell(new DataTreeNotificationListenerRegistrationActor.SetRegistration(
-                    delayedReg, () -> delayedRegList.remove(delayedReg)), ActorRef.noSender());
-        }
-
-        log.debug("{}: {} sending reply, listenerRegistrationPath = {} ", persistenceId(), logName(),
-                registrationActor.path());
-
-        tellSender(new RegisterDataTreeNotificationListenerReply(registrationActor));
-    }
-
-    protected ActorSelection processListenerRegistrationMessage(M message) {
-        final ActorSelection listenerActor = selectActor(message.getListenerActorPath());
-
-        // We have a leader so enable the listener.
-        listenerActor.tell(new EnableNotification(true, persistenceId()), getSelf());
-
-        if (!message.isRegisterOnAllInstances()) {
-            // This is a leader-only registration so store a reference to the listener actor so it can be notified
-            // at a later point if notifications should be enabled or disabled.
-            leaderOnlyListenerActors.add(listenerActor);
-        }
-
-        allListenerActors.add(listenerActor);
-
-        return listenerActor;
-    }
-
-    protected Logger log() {
-        return log;
-    }
-
-    protected void removeListenerActor(ActorSelection listenerActor) {
-        allListenerActors.remove(listenerActor);
-        leaderOnlyListenerActors.remove(listenerActor);
-    }
-
-    abstract void doRegistration(M message, ActorRef registrationActor);
-
-    protected abstract String logName();
-}