import akka.actor.ActorRef;
import akka.actor.ActorSelection;
-import com.google.common.base.Optional;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map.Entry;
-import org.opendaylight.controller.cluster.datastore.messages.EnableNotification;
+import org.opendaylight.controller.cluster.datastore.actors.DataTreeNotificationListenerRegistrationActor;
import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListener;
-import org.opendaylight.controller.cluster.datastore.messages.RegisterChangeListenerReply;
import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeListener;
-import org.opendaylight.controller.md.sal.dom.store.impl.DataChangeListenerRegistration;
-import org.opendaylight.yangtools.concepts.ListenerRegistration;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-final class DataChangeListenerSupport extends LeaderLocalDelegateFactory<RegisterChangeListener,
- DataChangeListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>,
- Optional<DataTreeCandidate>> {
- 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 List<DelayedListenerRegistration> delayedRegisterOnAllListeners = new ArrayList<>();
+final class DataChangeListenerSupport extends AbstractDataListenerSupport<
+ AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>, RegisterChangeListener> {
DataChangeListenerSupport(final Shard shard) {
super(shard);
}
@Override
- void onLeadershipChange(final boolean isLeader, boolean hasLeader) {
- LOG.debug("onLeadershipChange, isLeader: {}, hasLeader : {}", isLeader, hasLeader);
+ void doRegistration(final RegisterChangeListener message, final ActorRef registrationActor) {
+ final ActorSelection listenerActor = processListenerRegistrationMessage(message);
- for (ActorSelection dataChangeListener : dataChangeListeners) {
- dataChangeListener.tell(new EnableNotification(isLeader), getSelf());
- }
-
- if(hasLeader) {
- for (DelayedListenerRegistration reg : delayedRegisterOnAllListeners) {
- registerDelayedListeners(reg);
- }
- delayedRegisterOnAllListeners.clear();
- }
-
- if (isLeader) {
- for (DelayedListenerRegistration reg: delayedListenerRegistrations) {
- registerDelayedListeners(reg);
- }
-
- delayedListenerRegistrations.clear();
- }
- }
-
- private void registerDelayedListeners(DelayedListenerRegistration reg) {
- if(!reg.isClosed()) {
- final Entry<DataChangeListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>,
- Optional<DataTreeCandidate>> res = createDelegate(reg.getRegisterChangeListener());
- reg.setDelegate(res.getKey());
- getShard().getDataStore().notifyOfInitialData(res.getKey(), res.getValue());
- }
- }
-
- @Override
- void onMessage(final RegisterChangeListener message, final boolean isLeader, boolean hasLeader) {
-
- LOG.debug("{}: registerDataChangeListener for {}, isLeader: {}, hasLeader : {}",
- persistenceId(), message.getPath(), isLeader, hasLeader);
-
- final ListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier,
- NormalizedNode<?, ?>>> registration;
- if ((hasLeader && message.isRegisterOnAllInstances()) || isLeader) {
- final Entry<DataChangeListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>,
- Optional<DataTreeCandidate>> res = createDelegate(message);
- registration = res.getKey();
-
- getShard().getDataStore().notifyOfInitialData(res.getKey(), res.getValue());
- } else {
- LOG.debug("{}: Shard is not the leader - delaying registration", persistenceId());
-
- DelayedListenerRegistration delayedReg = new DelayedListenerRegistration(message);
- if(message.isRegisterOnAllInstances()) {
- delayedRegisterOnAllListeners.add(delayedReg);
- } else {
- delayedListenerRegistrations.add(delayedReg);
- }
- registration = delayedReg;
- }
-
- ActorRef listenerRegistration = createActor(DataChangeListenerRegistrationActor.props(registration));
+ AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener =
+ new DataChangeListenerProxy(listenerActor);
- LOG.debug("{}: registerDataChangeListener sending reply, listenerRegistrationPath = {} ",
- persistenceId(), listenerRegistration.path());
+ log().debug("{}: Registering for path {}", persistenceId(), message.getPath());
- tellSender(new RegisterChangeListenerReply(listenerRegistration));
+ final ShardDataTree shardDataTree = getShard().getDataStore();
+ shardDataTree.registerDataChangeListener(message.getPath(), listener, message.getScope(),
+ shardDataTree.readCurrentData(), registration -> registrationActor.tell(
+ new DataTreeNotificationListenerRegistrationActor.SetRegistration(registration, () ->
+ removeListenerActor(listenerActor)), ActorRef.noSender()));
}
@Override
- Entry<DataChangeListenerRegistration<AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>>>,
- Optional<DataTreeCandidate>> createDelegate(final RegisterChangeListener message) {
- 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), 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()) {
- dataChangeListeners.add(dataChangeListenerPath);
- }
-
- AsyncDataChangeListener<YangInstanceIdentifier, NormalizedNode<?, ?>> listener =
- new DataChangeListenerProxy(dataChangeListenerPath);
-
- LOG.debug("{}: Registering for path {}", persistenceId(), message.getPath());
-
- return getShard().getDataStore().registerChangeListener(message.getPath(), listener,
- message.getScope());
+ protected String logName() {
+ return "registerDataChangeListener";
}
}