2 * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.cluster.datastore;
10 import static java.util.Objects.requireNonNull;
12 import akka.actor.ActorRef;
13 import akka.dispatch.OnComplete;
14 import akka.pattern.Patterns;
15 import akka.util.Timeout;
16 import java.util.concurrent.TimeUnit;
17 import org.checkerframework.checker.lock.qual.GuardedBy;
18 import org.opendaylight.controller.cluster.datastore.exceptions.LocalShardNotFoundException;
19 import org.opendaylight.controller.cluster.datastore.utils.ActorUtils;
20 import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohort;
21 import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistration;
22 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
23 import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
26 import scala.concurrent.Future;
27 import scala.concurrent.duration.FiniteDuration;
29 public class DataTreeCohortRegistrationProxy<C extends DOMDataTreeCommitCohort> extends AbstractObjectRegistration<C>
30 implements DOMDataTreeCommitCohortRegistration<C> {
32 private static final Logger LOG = LoggerFactory.getLogger(DataTreeCohortRegistrationProxy.class);
33 private static final Timeout TIMEOUT = new Timeout(new FiniteDuration(5, TimeUnit.SECONDS));
34 private final DOMDataTreeIdentifier subtree;
35 private final ActorRef actor;
36 private final ActorUtils actorUtils;
38 private ActorRef cohortRegistry;
40 DataTreeCohortRegistrationProxy(final ActorUtils actorUtils, final DOMDataTreeIdentifier subtree,
43 this.subtree = requireNonNull(subtree);
44 this.actorUtils = requireNonNull(actorUtils);
45 this.actor = actorUtils.getActorSystem().actorOf(DataTreeCohortActor.props(getInstance(),
46 subtree.getRootIdentifier()).withDispatcher(actorUtils.getNotificationDispatcherPath()));
49 public void init(final String shardName) {
50 // FIXME: Add late binding to shard.
51 Future<ActorRef> findFuture = actorUtils.findLocalShardAsync(shardName);
52 findFuture.onComplete(new OnComplete<ActorRef>() {
54 public void onComplete(final Throwable failure, final ActorRef shard) {
55 if (failure instanceof LocalShardNotFoundException) {
56 LOG.debug("No local shard found for {} - DataTreeChangeListener {} at path {} "
57 + "cannot be registered", shardName, getInstance(), subtree);
58 } else if (failure != null) {
59 LOG.error("Failed to find local shard {} - DataTreeChangeListener {} at path {} "
60 + "cannot be registered", shardName, getInstance(), subtree, failure);
62 performRegistration(shard);
65 }, actorUtils.getClientDispatcher());
68 private synchronized void performRegistration(final ActorRef shard) {
72 cohortRegistry = shard;
73 Future<Object> future =
74 Patterns.ask(shard, new DataTreeCohortActorRegistry.RegisterCohort(subtree, actor), TIMEOUT);
75 future.onComplete(new OnComplete<>() {
78 public void onComplete(final Throwable failure, final Object val) {
79 if (failure != null) {
80 LOG.error("Unable to register {} as commit cohort", getInstance(), failure);
87 }, actorUtils.getClientDispatcher());
91 protected synchronized void removeRegistration() {
92 if (cohortRegistry != null) {
93 cohortRegistry.tell(new DataTreeCohortActorRegistry.RemoveCohort(actor), ActorRef.noSender());