opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/RpcListener.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.controller.remote.rpc;
   9
  10 import akka.actor.ActorRef;
  11 import com.google.common.base.Preconditions;
  12 import java.util.Collection;
  13 import javax.annotation.Nonnull;
  14 import org.opendaylight.controller.md.sal.dom.api.DOMRpcAvailabilityListener;
  15 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
  17 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry;
  18 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry.Messages.AddOrUpdateRoutes;
  19 import org.opendaylight.controller.remote.rpc.registry.RpcRegistry.Messages.RemoveRoutes;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 /**
  24  * A {@link DOMRpcAvailabilityListener} reacting to RPC implementations different than {@link RemoteRpcImplementation}.
  25  * The knowledge of such implementations is forwarded to {@link RpcRegistry}, which is responsible for advertising
  26  * their presence to other nodes.
  27  */
  28 final class RpcListener implements DOMRpcAvailabilityListener {
  29     private static final Logger LOG = LoggerFactory.getLogger(RpcListener.class);
  30
  31     private final ActorRef rpcRegistry;
  32
  33     RpcListener(final ActorRef rpcRegistry) {
  34         this.rpcRegistry = Preconditions.checkNotNull(rpcRegistry);
  35     }
  36
  37     @Override
  38     public void onRpcAvailable(@Nonnull final Collection<DOMRpcIdentifier> rpcs) {
  39         Preconditions.checkArgument(rpcs != null, "Input Collection of DOMRpcIdentifier can not be null.");
  40         LOG.debug("Adding registration for [{}]", rpcs);
  41
  42         rpcRegistry.tell(new AddOrUpdateRoutes(rpcs), ActorRef.noSender());
  43     }
  44
  45     @Override
  46     public void onRpcUnavailable(@Nonnull final Collection<DOMRpcIdentifier> rpcs) {
  47         Preconditions.checkArgument(rpcs != null, "Input Collection of DOMRpcIdentifier can not be null.");
  48
  49         LOG.debug("Removing registration for [{}]", rpcs);
  50         rpcRegistry.tell(new RemoveRoutes(rpcs), ActorRef.noSender());
  51     }
  52
  53     @Override
  54     public boolean acceptsImplementation(final DOMRpcImplementation impl) {
  55         return !(impl instanceof RemoteRpcImplementation);
  56     }
  57 }