2 * Copyright (c) 2014, 2015 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
9 package org.opendaylight.controller.remote.rpc;
11 import static akka.pattern.Patterns.ask;
13 import akka.actor.ActorRef;
14 import akka.dispatch.OnComplete;
15 import akka.japi.Pair;
16 import com.google.common.util.concurrent.CheckedFuture;
17 import com.google.common.util.concurrent.Futures;
18 import java.util.List;
19 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
20 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
21 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
22 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationNotAvailableException;
23 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
24 import org.opendaylight.controller.remote.rpc.messages.ExecuteRpc;
25 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry;
26 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry.Messages.FindRoutersReply;
27 import org.opendaylight.controller.remote.rpc.utils.LatestEntryRoutingLogic;
28 import org.opendaylight.controller.sal.connector.api.RpcRouter;
29 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
32 import scala.concurrent.ExecutionContext;
33 import scala.concurrent.Future;
35 public class RemoteRpcImplementation implements DOMRpcImplementation {
36 private static final Logger LOG = LoggerFactory.getLogger(RemoteRpcImplementation.class);
38 private final ActorRef rpcRegistry;
39 private final RemoteRpcProviderConfig config;
41 public RemoteRpcImplementation(final ActorRef rpcRegistry, final RemoteRpcProviderConfig config) {
43 this.rpcRegistry = rpcRegistry;
47 public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(final DOMRpcIdentifier rpc,
48 final NormalizedNode<?, ?> input) {
49 if (input instanceof RemoteRpcInput) {
50 LOG.warn("Rpc {} was removed during execution or there is loop present. Failing received rpc.", rpc);
51 return Futures.<DOMRpcResult, DOMRpcException>immediateFailedCheckedFuture(
52 new DOMRpcImplementationNotAvailableException(
53 "Rpc implementation for {} was removed during processing.", rpc));
55 final RemoteDOMRpcFuture frontEndFuture = RemoteDOMRpcFuture.create(rpc.getType().getLastComponent());
56 findRouteAsync(rpc).onComplete(new OnComplete<FindRoutersReply>() {
59 public void onComplete(final Throwable error, final FindRoutersReply routes) throws Throwable {
61 frontEndFuture.failNow(error);
63 final List<Pair<ActorRef, Long>> routePairs = routes.getRouterWithUpdateTime();
64 if (routePairs == null || routePairs.isEmpty()) {
65 frontEndFuture.failNow(new DOMRpcImplementationNotAvailableException(
66 "No local or remote implementation available for rpc %s", rpc.getType()));
68 final ActorRef remoteImplRef = new LatestEntryRoutingLogic(routePairs).select();
69 final Object executeRpcMessage = ExecuteRpc.from(rpc, input);
70 LOG.debug("Found remote actor {} for rpc {} - sending {}", remoteImplRef, rpc.getType(),
72 frontEndFuture.completeWith(ask(remoteImplRef, executeRpcMessage, config.getAskDuration()));
76 }, ExecutionContext.Implicits$.MODULE$.global());
77 return frontEndFuture;
80 @SuppressWarnings({"unchecked", "rawtypes"})
81 private Future<FindRoutersReply> findRouteAsync(final DOMRpcIdentifier rpc) {
82 // FIXME: Refactor routeId and message to use DOMRpcIdentifier directly.
83 final RpcRouter.RouteIdentifier<?, ?, ?> routeId =
84 new RouteIdentifierImpl(null, rpc.getType().getLastComponent(), rpc.getContextReference());
85 final RpcRegistry.Messages.FindRouters findMsg = new RpcRegistry.Messages.FindRouters(routeId);
86 return (Future) ask(rpcRegistry, findMsg, config.getAskDuration());