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.databroker.actors.dds;
10 import akka.actor.ActorRef;
11 import akka.actor.Props;
12 import akka.pattern.ExplicitAskSupport;
13 import akka.util.Timeout;
14 import com.google.common.base.Preconditions;
15 import com.google.common.base.Throwables;
16 import java.util.concurrent.TimeUnit;
17 import javax.annotation.Nonnull;
18 import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
19 import org.opendaylight.controller.cluster.access.concepts.FrontendType;
20 import org.opendaylight.controller.cluster.access.concepts.MemberName;
21 import org.opendaylight.controller.cluster.datastore.actors.client.AbstractClientActor;
22 import org.opendaylight.controller.cluster.datastore.actors.client.ClientActorContext;
23 import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
24 import scala.Function1;
25 import scala.concurrent.Await;
26 import scala.concurrent.duration.Duration;
27 import scala.runtime.AbstractFunction1;
30 * A {@link AbstractClientActor} which acts as the point of contact for DistributedDataStore.
32 * @author Robert Varga
34 public final class DistributedDataStoreClientActor extends AbstractClientActor {
35 // Unfortunately Akka's explicit ask pattern does not work with its Java API, as it fails to invoke passed message.
36 // In order to make this work for now, we tap directly into ExplicitAskSupport and use a Scala function instead
37 // of akka.japi.Function.
38 private static final ExplicitAskSupport ASK_SUPPORT = akka.pattern.extended.package$.MODULE$;
39 private static final Function1<ActorRef, Object> GET_CLIENT_FACTORY = new AbstractFunction1<ActorRef, Object>() {
41 public Object apply(final ActorRef askSender) {
42 return new GetClientRequest(askSender);
46 private final ActorContext actorContext;
48 private DistributedDataStoreClientActor(final FrontendIdentifier frontendId, final ActorContext actorContext) {
50 this.actorContext = Preconditions.checkNotNull(actorContext);
54 protected DistributedDataStoreClientBehavior initialBehavior(final ClientActorContext context) {
55 return new DistributedDataStoreClientBehavior(context, actorContext);
58 public static Props props(final @Nonnull MemberName memberName, @Nonnull final String storeName, final ActorContext ctx) {
59 final String name = "DistributedDataStore:storeName='" + storeName + "'";
60 final FrontendIdentifier frontendId = FrontendIdentifier.create(memberName, FrontendType.forName(name));
61 return Props.create(DistributedDataStoreClientActor.class,
62 () -> new DistributedDataStoreClientActor(frontendId, ctx));
65 public static DistributedDataStoreClient getDistributedDataStoreClient(final @Nonnull ActorRef actor,
66 final long timeout, final TimeUnit unit) {
68 return (DistributedDataStoreClient) Await.result(ASK_SUPPORT.ask(actor, GET_CLIENT_FACTORY,
69 Timeout.apply(timeout, unit)), Duration.Inf());
70 } catch (Exception e) {
71 throw Throwables.propagate(e);