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 akka.util.Timeout;
  18 import com.google.common.base.Preconditions;
  19 import com.google.common.util.concurrent.Futures;
  20 import com.google.common.util.concurrent.ListenableFuture;
  21 import java.util.concurrent.atomic.AtomicBoolean;
  22 import javax.annotation.Nonnull;
  23 import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
  24 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  25 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  26 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  27 import org.opendaylight.netconf.topology.singleton.api.RemoteDeviceConnector;
  28 import org.opendaylight.netconf.topology.singleton.impl.actors.NetconfNodeActor;
  29 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
  30 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  31 import org.opendaylight.netconf.topology.singleton.messages.RefreshSetupMasterActorData;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35 import scala.concurrent.Future;
  36
  37 class NetconfTopologyContext implements ClusterSingletonService, AutoCloseable {
  38
  39     private static final Logger LOG = LoggerFactory.getLogger(NetconfTopologyContext.class);
  40
  41     private final ServiceGroupIdentifier serviceGroupIdent;
  42     private final Timeout actorResponseWaitTime;
  43     private final DOMMountPointService mountService;
  44
  45     private NetconfTopologySetup netconfTopologyDeviceSetup;
  46     private RemoteDeviceId remoteDeviceId;
  47     private RemoteDeviceConnector remoteDeviceConnector;
  48     private NetconfNodeManager netconfNodeManager;
  49     private ActorRef masterActorRef;
  50     private final AtomicBoolean closed = new AtomicBoolean(false);
  51     private final AtomicBoolean stopped = new AtomicBoolean(false);
  52     private volatile boolean isMaster;
  53
  54     NetconfTopologyContext(final NetconfTopologySetup netconfTopologyDeviceSetup,
  55                            final ServiceGroupIdentifier serviceGroupIdent,
  56                            final Timeout actorResponseWaitTime, final DOMMountPointService mountService) {
  57         this.netconfTopologyDeviceSetup = Preconditions.checkNotNull(netconfTopologyDeviceSetup);
  58         this.serviceGroupIdent = serviceGroupIdent;
  59         this.actorResponseWaitTime = actorResponseWaitTime;
  60         this.mountService = mountService;
  61
  62         remoteDeviceId = NetconfTopologyUtils.createRemoteDeviceId(netconfTopologyDeviceSetup.getNode().getNodeId(),
  63                 netconfTopologyDeviceSetup.getNode().getAugmentation(NetconfNode.class));
  64
  65         remoteDeviceConnector = new RemoteDeviceConnectorImpl(netconfTopologyDeviceSetup, remoteDeviceId,
  66                 actorResponseWaitTime, mountService);
  67
  68         netconfNodeManager = createNodeDeviceManager();
  69     }
  70
  71     @Override
  72     public void instantiateServiceInstance() {
  73         LOG.info("Master was selected: {}", remoteDeviceId.getHost().getIpAddress());
  74
  75         isMaster = true;
  76
  77         // master should not listen on netconf-node operational datastore
  78         if (netconfNodeManager != null) {
  79             netconfNodeManager.close();
  80             netconfNodeManager = null;
  81         }
  82
  83         if (!closed.get()) {
  84             final String masterAddress =
  85                     Cluster.get(netconfTopologyDeviceSetup.getActorSystem()).selfAddress().toString();
  86             masterActorRef = netconfTopologyDeviceSetup.getActorSystem().actorOf(NetconfNodeActor.props(
  87                     netconfTopologyDeviceSetup, remoteDeviceId, DEFAULT_SCHEMA_REPOSITORY, DEFAULT_SCHEMA_REPOSITORY,
  88                     actorResponseWaitTime, mountService),
  89                     NetconfTopologyUtils.createMasterActorName(remoteDeviceId.getName(), masterAddress));
  90
  91             remoteDeviceConnector.startRemoteDeviceConnection(masterActorRef);
  92         }
  93
  94     }
  95
  96     // called when master is down/changed to slave
  97     @Override
  98     public ListenableFuture<Void> closeServiceInstance() {
  99
 100         if (!closed.get()) {
 101             // in case that master changes role to slave, new NodeDeviceManager must be created and listener registered
 102             netconfNodeManager = createNodeDeviceManager();
 103         }
 104         stopDeviceConnectorAndActor();
 105
 106         return Futures.immediateFuture(null);
 107     }
 108
 109     @Override
 110     public ServiceGroupIdentifier getIdentifier() {
 111         return serviceGroupIdent;
 112     }
 113
 114     private NetconfNodeManager createNodeDeviceManager() {
 115         final NetconfNodeManager ndm =
 116                 new NetconfNodeManager(netconfTopologyDeviceSetup, remoteDeviceId, actorResponseWaitTime, mountService);
 117         ndm.registerDataTreeChangeListener(netconfTopologyDeviceSetup.getTopologyId(),
 118                 netconfTopologyDeviceSetup.getNode().getKey());
 119
 120         return ndm;
 121     }
 122
 123     @Override
 124     public void close() throws Exception {
 125         if (!closed.compareAndSet(false, true)) {
 126             return;
 127         }
 128
 129         if (netconfNodeManager != null) {
 130             netconfNodeManager.close();
 131         }
 132         stopDeviceConnectorAndActor();
 133
 134     }
 135
 136     /**
 137      * Refresh, 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                 actorResponseWaitTime, mountService);
 153
 154         if (isMaster) {
 155             final Future<Object> future = Patterns.ask(masterActorRef, new RefreshSetupMasterActorData(
 156                     netconfTopologyDeviceSetup, remoteDeviceId), actorResponseWaitTime);
 157
 158             future.onComplete(new OnComplete<Object>() {
 159                 @Override
 160                 public void onComplete(final Throwable failure, final Object success) throws Throwable {
 161                     if (failure != null) {
 162                         LOG.error("Failed to refresh master actor data: {}", failure);
 163                         return;
 164                     }
 165                     remoteDeviceConnector.startRemoteDeviceConnection(masterActorRef);
 166                 }
 167             }, netconfTopologyDeviceSetup.getActorSystem().dispatcher());
 168         }
 169     }
 170
 171     private void stopDeviceConnectorAndActor() {
 172         if (!stopped.compareAndSet(false, true)) {
 173             return;
 174         }
 175         if (remoteDeviceConnector != null) {
 176             remoteDeviceConnector.stopRemoteDeviceConnection();
 177         }
 178
 179         if (masterActorRef != null) {
 180             netconfTopologyDeviceSetup.getActorSystem().stop(masterActorRef);
 181             masterActorRef = null;
 182         }
 183     }
 184 }