import akka.actor.ActorRef;
import akka.actor.ActorSelection;
-import com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.Collection;
+import java.util.Collections;
+import java.util.Map.Entry;
import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-final class DataTreeChangeListenerSupport extends LeaderLocalDelegateFactory<RegisterDataTreeChangeListener, ListenerRegistration<DOMDataTreeChangeListener>> {
+final class DataTreeChangeListenerSupport extends LeaderLocalDelegateFactory<RegisterDataTreeChangeListener, ListenerRegistration<DOMDataTreeChangeListener>, DataTreeCandidate> {
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
- void onLeadershipChange(final boolean isLeader) {
+ void onLeadershipChange(final boolean isLeader, boolean hasLeader) {
if (isLeader) {
for (DelayedDataTreeListenerRegistration reg : delayedRegistrations) {
reg.createDelegate(this);
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);
+ void onMessage(final RegisterDataTreeChangeListener registerTreeChangeListener, final boolean isLeader, boolean hasLeader) {
+ LOG.debug("{}: registerTreeChangeListener for {}, leader: {}", persistenceId(), registerTreeChangeListener.getPath(), isLeader);
final ListenerRegistration<DOMDataTreeChangeListener> registration;
+ final DataTreeCandidate event;
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);
delayedRegistrations.add(delayedReg);
registration = delayedReg;
+ event = null;
} else {
- registration = createDelegate(registerTreeChangeListener);
+ final Entry<ListenerRegistration<DOMDataTreeChangeListener>, DataTreeCandidate> res = createDelegate(registerTreeChangeListener);
+ registration = res.getKey();
+ event = res.getValue();
}
- 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));
+ if (event != null) {
+ registration.getInstance().onDataTreeChanged(Collections.singletonList(event));
+ }
}
@Override
- ListenerRegistration<DOMDataTreeChangeListener> createDelegate(final RegisterDataTreeChangeListener message) {
- ActorSelection dataChangeListenerPath = shard.getContext().system().actorSelection(
- message.getDataTreeChangeListenerPath().path());
+ Entry<ListenerRegistration<DOMDataTreeChangeListener>, DataTreeCandidate> createDelegate(final RegisterDataTreeChangeListener message) {
+ 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);
}
}