*/
package org.opendaylight.controller.cluster.datastore;
-import com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.List;
import akka.actor.ActorRef;
private static final Logger LOG = LoggerFactory.getLogger(DataChangeListenerSupport.class);
private final List<DelayedListenerRegistration> delayedListenerRegistrations = new ArrayList<>();
private final List<ActorSelection> dataChangeListeners = new ArrayList<>();
- private final Shard shard;
DataChangeListenerSupport(final Shard shard) {
- this.shard = Preconditions.checkNotNull(shard);
+ super(shard);
}
@Override
void onLeadershipChange(final boolean isLeader) {
for (ActorSelection dataChangeListener : dataChangeListeners) {
- dataChangeListener.tell(new EnableNotification(isLeader), shard.getSelf());
+ dataChangeListener.tell(new EnableNotification(isLeader), getSelf());
}
if (isLeader) {
@Override
void onMessage(final RegisterChangeListener message, final boolean isLeader) {
- LOG.debug("{}: registerDataChangeListener for {}, leader: {}", shard.persistenceId(), message.getPath(), isLeader);
+ LOG.debug("{}: registerDataChangeListener for {}, leader: {}", persistenceId(), message.getPath(), isLeader);
ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
NormalizedNode<?, ?>>> registration;
if (isLeader) {
registration = createDelegate(message);
} else {
- LOG.debug("{}: Shard is not the leader - delaying registration", shard.persistenceId());
+ LOG.debug("{}: Shard is not the leader - delaying registration", persistenceId());
DelayedListenerRegistration delayedReg = new DelayedListenerRegistration(message);
delayedListenerRegistrations.add(delayedReg);
registration = delayedReg;
}
- ActorRef listenerRegistration = shard.getContext().actorOf(
- DataChangeListenerRegistration.props(registration));
+ ActorRef listenerRegistration = createActor(DataChangeListenerRegistration.props(registration));
LOG.debug("{}: registerDataChangeListener sending reply, listenerRegistrationPath = {} ",
- shard.persistenceId(), listenerRegistration.path());
+ persistenceId(), listenerRegistration.path());
- shard.getSender().tell(new RegisterChangeListenerReply(listenerRegistration), shard.getSelf());
+ tellSender(new RegisterChangeListenerReply(listenerRegistration));
}
@Override
ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>> createDelegate(
final RegisterChangeListener message) {
- ActorSelection dataChangeListenerPath = shard.getContext().system().actorSelection(
- message.getDataChangeListenerPath());
+ ActorSelection dataChangeListenerPath = selectActor(message.getDataChangeListenerPath());
// 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), shard.getSelf());
+ 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
AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener =
new DataChangeListenerProxy(dataChangeListenerPath);
- LOG.debug("{}: Registering for path {}", shard.persistenceId(), message.getPath());
+ LOG.debug("{}: Registering for path {}", persistenceId(), message.getPath());
- return shard.getDataStore().registerChangeListener(message.getPath(), listener,
+ return getShard().getDataStore().registerChangeListener(message.getPath(), listener,
message.getScope());
}
}
import akka.actor.ActorRef;
import akka.actor.ActorSelection;
-import com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.Collection;
import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
private static final Logger LOG = LoggerFactory.getLogger(DataTreeChangeListenerSupport.class);
private final ArrayList<DelayedDataTreeListenerRegistration> delayedRegistrations = new ArrayList<>();
private final Collection<ActorSelection> actors = new ArrayList<>();
- private final Shard shard;
DataTreeChangeListenerSupport(final Shard shard) {
- this.shard = Preconditions.checkNotNull(shard);
+ super(shard);
}
@Override
final EnableNotification msg = new EnableNotification(isLeader);
for (ActorSelection dataChangeListener : actors) {
- dataChangeListener.tell(msg, shard.getSelf());
+ dataChangeListener.tell(msg, getSelf());
}
}
@Override
void onMessage(final RegisterDataTreeChangeListener registerTreeChangeListener, final boolean isLeader) {
- LOG.debug("{}: registerTreeChangeListener for {}, leader: {}", shard.persistenceId(), registerTreeChangeListener.getPath(), isLeader);
+ LOG.debug("{}: registerTreeChangeListener for {}, leader: {}", persistenceId(), registerTreeChangeListener.getPath(), isLeader);
final ListenerRegistration<DOMDataTreeChangeListener> registration;
if (!isLeader) {
- LOG.debug("{}: Shard is not the leader - delaying registration", shard.persistenceId());
+ LOG.debug("{}: Shard is not the leader - delaying registration", persistenceId());
DelayedDataTreeListenerRegistration delayedReg =
new DelayedDataTreeListenerRegistration(registerTreeChangeListener);
registration = createDelegate(registerTreeChangeListener);
}
- ActorRef listenerRegistration = shard.getContext().actorOf(
- DataTreeChangeListenerRegistrationActor.props(registration));
+ ActorRef listenerRegistration = createActor(DataTreeChangeListenerRegistrationActor.props(registration));
LOG.debug("{}: registerDataChangeListener sending reply, listenerRegistrationPath = {} ",
- shard.persistenceId(), listenerRegistration.path());
+ persistenceId(), listenerRegistration.path());
- shard.getSender().tell(new RegisterDataTreeChangeListenerReply(listenerRegistration), shard.getSelf());
+ tellSender(new RegisterDataTreeChangeListenerReply(listenerRegistration));
}
@Override
ListenerRegistration<DOMDataTreeChangeListener> createDelegate(final RegisterDataTreeChangeListener message) {
- ActorSelection dataChangeListenerPath = shard.getContext().system().actorSelection(
- message.getDataTreeChangeListenerPath().path());
+ 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), shard.getSelf());
+ 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
DOMDataTreeChangeListener listener = new ForwardingDataTreeChangeListener(dataChangeListenerPath);
- LOG.debug("{}: Registering for path {}", shard.persistenceId(), message.getPath());
+ LOG.debug("{}: Registering for path {}", persistenceId(), message.getPath());
- return shard.getDataStore().registerTreeChangeListener(message.getPath(), listener);
+ return getShard().getDataStore().registerTreeChangeListener(message.getPath(), listener);
}
}
*/
package org.opendaylight.controller.cluster.datastore;
+import akka.actor.ActorPath;
+import akka.actor.ActorRef;
+import akka.actor.ActorSelection;
+import akka.actor.Props;
+import com.google.common.base.Preconditions;
+
/**
* Base class for factories instantiating delegates which are local to the
* shard leader.
* <M> message type
*/
abstract class LeaderLocalDelegateFactory<M, D> extends DelegateFactory<M, D> {
+ private final Shard shard;
+
+ protected LeaderLocalDelegateFactory(final Shard shard) {
+ this.shard = Preconditions.checkNotNull(shard);
+ }
+
+ protected final ActorRef getSelf() {
+ return shard.getSelf();
+ }
+
+ protected final Shard getShard() {
+ return shard;
+ }
+
+ protected final String persistenceId() {
+ return shard.persistenceId();
+ }
+
+ protected final void tellSender(final Object message) {
+ shard.getSender().tell(message, getSelf());
+ }
+
+ protected final ActorRef createActor(final Props props) {
+ return shard.getContext().actorOf(props);
+ }
+
+ protected final ActorSelection selectActor(ActorRef ref) {
+ return shard.getContext().system().actorSelection(ref.path());
+ }
+
+ protected final ActorSelection selectActor(ActorPath path) {
+ return shard.getContext().system().actorSelection(path);
+ }
+
/**
* Invoked whenever the local shard's leadership role changes.
*