netconf/netconf-topology-singleton/src/main/java/org/opendaylight/netconf/topology/singleton/impl/NetconfTopologyContext.java

   1 /*
   2  * Copyright (c) 2016 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
   9 package org.opendaylight.netconf.topology.singleton.impl;
  10
  11 import static org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils.DEFAULT_SCHEMA_REPOSITORY;
  12
  13 import akka.actor.ActorRef;
  14 import akka.cluster.Cluster;
  15 import akka.dispatch.OnComplete;
  16 import akka.pattern.Patterns;
  17 import com.google.common.base.Preconditions;
  18 import com.google.common.util.concurrent.Futures;
  19 import com.google.common.util.concurrent.ListenableFuture;
  20 import javax.annotation.Nonnull;
  21 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  22 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  23 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  24 import org.opendaylight.netconf.topology.singleton.api.RemoteDeviceConnector;
  25 import org.opendaylight.netconf.topology.singleton.impl.actors.NetconfNodeActor;
  26 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
  27 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  28 import org.opendaylight.netconf.topology.singleton.messages.RefreshSetupMasterActorData;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import scala.concurrent.Future;
  33
  34 class NetconfTopologyContext implements ClusterSingletonService {
  35
  36     private static final Logger LOG = LoggerFactory.getLogger(NetconfTopologyContext.class);
  37
  38     private final ServiceGroupIdentifier serviceGroupIdent;
  39     private NetconfTopologySetup netconfTopologyDeviceSetup;
  40     private RemoteDeviceId remoteDeviceId;
  41     private RemoteDeviceConnector remoteDeviceConnector;
  42     private NetconfNodeManager netconfNodeManager;
  43     private boolean finalClose = false;
  44     private boolean isMaster;
  45
  46     private ActorRef masterActorRef;
  47
  48     NetconfTopologyContext(final NetconfTopologySetup netconfTopologyDeviceSetup,
  49                            final ServiceGroupIdentifier serviceGroupIdent) {
  50         this.netconfTopologyDeviceSetup = Preconditions.checkNotNull(netconfTopologyDeviceSetup);
  51         this.serviceGroupIdent = serviceGroupIdent;
  52
  53         remoteDeviceId = NetconfTopologyUtils.createRemoteDeviceId(netconfTopologyDeviceSetup.getNode().getNodeId(),
  54                 netconfTopologyDeviceSetup.getNode().getAugmentation(NetconfNode.class));
  55
  56         remoteDeviceConnector = new RemoteDeviceConnectorImpl(netconfTopologyDeviceSetup, remoteDeviceId);
  57
  58         netconfNodeManager = createNodeDeviceManager();
  59
  60     }
  61
  62     @Override
  63     public void instantiateServiceInstance() {
  64         LOG.info("Master was selected: {}", remoteDeviceId.getHost().getIpAddress());
  65
  66         isMaster = true;
  67
  68         // master should not listen on netconf-node operational datastore
  69         if (netconfNodeManager != null) {
  70             netconfNodeManager.close();
  71             netconfNodeManager = null;
  72         }
  73
  74         if (!finalClose) {
  75             final String masterAddress = Cluster.get(netconfTopologyDeviceSetup.getActorSystem()).selfAddress().toString();
  76             masterActorRef = netconfTopologyDeviceSetup.getActorSystem().actorOf(NetconfNodeActor.props(
  77                     netconfTopologyDeviceSetup, remoteDeviceId, DEFAULT_SCHEMA_REPOSITORY, DEFAULT_SCHEMA_REPOSITORY),
  78                     NetconfTopologyUtils.createMasterActorName(remoteDeviceId.getName(), masterAddress));
  79
  80             remoteDeviceConnector.startRemoteDeviceConnection(masterActorRef);
  81         }
  82
  83     }
  84
  85     // called when master is down/changed to slave
  86     @Override
  87     public ListenableFuture<Void> closeServiceInstance() {
  88
  89         if (!finalClose) {
  90             // in case that master changes role to slave, new NodeDeviceManager must be created and listener registered
  91             netconfNodeManager = createNodeDeviceManager();
  92         }
  93         if (masterActorRef != null) {
  94             netconfTopologyDeviceSetup.getActorSystem().stop(masterActorRef);
  95             masterActorRef = null;
  96         }
  97         if (remoteDeviceConnector != null) {
  98             remoteDeviceConnector.stopRemoteDeviceConnection();
  99         }
 100
 101         return Futures.immediateCheckedFuture(null);
 102     }
 103
 104     @Override
 105     public ServiceGroupIdentifier getIdentifier() {
 106         return serviceGroupIdent;
 107     }
 108
 109     private NetconfNodeManager createNodeDeviceManager() {
 110         final NetconfNodeManager ndm =
 111                 new NetconfNodeManager(netconfTopologyDeviceSetup, remoteDeviceId, DEFAULT_SCHEMA_REPOSITORY,
 112                         DEFAULT_SCHEMA_REPOSITORY);
 113         ndm.registerDataTreeChangeListener(netconfTopologyDeviceSetup.getTopologyId(),
 114                 netconfTopologyDeviceSetup.getNode().getKey());
 115
 116         return ndm;
 117     }
 118
 119     void closeFinal() throws Exception {
 120         finalClose = true;
 121
 122         if (netconfNodeManager != null) {
 123             netconfNodeManager.close();
 124         }
 125
 126         if (remoteDeviceConnector != null) {
 127             remoteDeviceConnector.stopRemoteDeviceConnection();
 128         }
 129
 130         if (masterActorRef != null) {
 131             netconfTopologyDeviceSetup.getActorSystem().stop(masterActorRef);
 132             masterActorRef = null;
 133         }
 134     }
 135
 136     /**
 137      * If configuration data was changed
 138      * @param setup new setup
 139      */
 140     void refresh(@Nonnull final NetconfTopologySetup setup) {
 141         netconfTopologyDeviceSetup = Preconditions.checkNotNull(setup);
 142         remoteDeviceId = NetconfTopologyUtils.createRemoteDeviceId(netconfTopologyDeviceSetup.getNode().getNodeId(),
 143                 netconfTopologyDeviceSetup.getNode().getAugmentation(NetconfNode.class));
 144
 145         if (isMaster) {
 146             remoteDeviceConnector.stopRemoteDeviceConnection();
 147         }
 148         if (!isMaster) {
 149             netconfNodeManager.refreshDevice(netconfTopologyDeviceSetup, remoteDeviceId);
 150         }
 151         remoteDeviceConnector = new RemoteDeviceConnectorImpl(netconfTopologyDeviceSetup, remoteDeviceId);
 152
 153         if (isMaster) {
 154             final Future<Object> future = Patterns.ask(masterActorRef, new RefreshSetupMasterActorData(
 155                     netconfTopologyDeviceSetup, remoteDeviceId), NetconfTopologyUtils.TIMEOUT);
 156
 157             future.onComplete(new OnComplete<Object>() {
 158                 @Override
 159                 public void onComplete(final Throwable failure, final Object success) throws Throwable {
 160                     if (failure != null) {
 161                         LOG.error("Failed to refresh master actor data: {}", failure);
 162                         return;
 163                     }
 164                     remoteDeviceConnector.startRemoteDeviceConnection(masterActorRef);
 165                 }
 166             }, netconfTopologyDeviceSetup.getActorSystem().dispatcher());
 167         }
 168     }
 169 }