opendaylight/md-sal/sal-remoterpc-connector/src/main/java/org/opendaylight/controller/remote/rpc/OpsListener.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 static com.google.common.base.Preconditions.checkArgument;
  11 import static java.util.Objects.requireNonNull;
  12
  13 import akka.actor.ActorRef;
  14 import java.util.Collection;
  15 import java.util.Set;
  16 import org.opendaylight.controller.remote.rpc.registry.ActionRegistry;
  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.opendaylight.mdsal.dom.api.DOMActionAvailabilityExtension;
  21 import org.opendaylight.mdsal.dom.api.DOMActionImplementation;
  22 import org.opendaylight.mdsal.dom.api.DOMActionInstance;
  23 import org.opendaylight.mdsal.dom.api.DOMRpcAvailabilityListener;
  24 import org.opendaylight.mdsal.dom.api.DOMRpcIdentifier;
  25 import org.opendaylight.mdsal.dom.api.DOMRpcImplementation;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * A {@link DOMRpcAvailabilityListener} reacting to RPC implementations different than
  31  * {@link RemoteRpcImplementation} or {@link RemoteActionImplementation}.
  32  * The knowledge of such implementations is forwarded to {@link RpcRegistry} and {@link ActionRegistry},
  33  * which is responsible for advertising their presence to other nodes.
  34  */
  35 final class OpsListener implements DOMRpcAvailabilityListener, DOMActionAvailabilityExtension.AvailabilityListener {
  36     private static final Logger LOG = LoggerFactory.getLogger(OpsListener.class);
  37
  38     private final ActorRef rpcRegistry;
  39     private final ActorRef actionRegistry;
  40
  41     OpsListener(final ActorRef rpcRegistry, final ActorRef actionRegistry) {
  42         this.rpcRegistry = requireNonNull(rpcRegistry);
  43         this.actionRegistry = requireNonNull(actionRegistry);
  44     }
  45
  46     @Override
  47     public void onRpcAvailable(final Collection<DOMRpcIdentifier> rpcs) {
  48         checkArgument(rpcs != null, "Input Collection of DOMRpcIdentifier can not be null.");
  49         LOG.debug("Adding registration for [{}]", rpcs);
  50
  51         rpcRegistry.tell(new AddOrUpdateRoutes(rpcs), ActorRef.noSender());
  52     }
  53
  54     @Override
  55     public void onRpcUnavailable(final Collection<DOMRpcIdentifier> rpcs) {
  56         checkArgument(rpcs != null, "Input Collection of DOMRpcIdentifier can not be null.");
  57
  58         LOG.debug("Removing registration for [{}]", rpcs);
  59         rpcRegistry.tell(new RemoveRoutes(rpcs), ActorRef.noSender());
  60     }
  61
  62     @Override
  63     public boolean acceptsImplementation(final DOMRpcImplementation impl) {
  64         return !(impl instanceof RemoteRpcImplementation);
  65     }
  66
  67     @Override
  68     public boolean acceptsImplementation(final DOMActionImplementation impl) {
  69         return !(impl instanceof RemoteActionImplementation);
  70     }
  71
  72     @Override
  73     public void onActionsChanged(final Set<DOMActionInstance> removed, final Set<DOMActionInstance> added) {
  74         LOG.debug("adding registration for [{}]", added);
  75         LOG.debug("removing registration for [{}]", removed);
  76         actionRegistry.tell(new ActionRegistry.Messages.UpdateActions(added, removed), ActorRef.noSender());
  77     }
  78 }