opendaylight/netconf/netconf-topology/src/main/java/org/opendaylight/netconf/topology/impl/NetconfNodeManagerCallback.java

   1 /*
   2  * Copyright (c) 2015 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.impl;
  10
  11 import akka.actor.ActorContext;
  12 import akka.actor.ActorRef;
  13 import akka.actor.ActorSystem;
  14 import akka.actor.TypedActor;
  15 import akka.actor.TypedProps;
  16 import akka.cluster.Cluster;
  17 import akka.dispatch.OnComplete;
  18 import com.google.common.base.Function;
  19 import com.google.common.collect.FluentIterable;
  20 import com.google.common.collect.Lists;
  21 import com.google.common.util.concurrent.FutureCallback;
  22 import com.google.common.util.concurrent.Futures;
  23 import com.google.common.util.concurrent.ListenableFuture;
  24 import java.util.ArrayList;
  25 import java.util.Collections;
  26 import java.util.List;
  27 import java.util.Map.Entry;
  28 import java.util.concurrent.TimeUnit;
  29 import javax.annotation.Nonnull;
  30 import javax.annotation.Nullable;
  31 import org.opendaylight.controller.md.sal.dom.api.DOMNotification;
  32 import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
  33 import org.opendaylight.netconf.api.NetconfMessage;
  34 import org.opendaylight.netconf.api.NetconfTerminationReason;
  35 import org.opendaylight.netconf.client.NetconfClientSession;
  36 import org.opendaylight.netconf.client.NetconfClientSessionListener;
  37 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCapabilities;
  38 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfSessionPreferences;
  39 import org.opendaylight.netconf.topology.NetconfTopology;
  40 import org.opendaylight.netconf.topology.NodeManager;
  41 import org.opendaylight.netconf.topology.NodeManagerCallback;
  42 import org.opendaylight.netconf.topology.RoleChangeStrategy;
  43 import org.opendaylight.netconf.topology.TopologyManager;
  44 import org.opendaylight.netconf.topology.pipeline.ClusteredNetconfDeviceCommunicator.NetconfClientSessionListenerRegistration;
  45 import org.opendaylight.netconf.topology.pipeline.TopologyMountPointFacade.ConnectionStatusListenerRegistration;
  46 import org.opendaylight.netconf.topology.util.BaseNodeManager;
  47 import org.opendaylight.netconf.topology.util.BaseTopologyManager;
  48 import org.opendaylight.netconf.topology.util.messages.AnnounceMasterMountPoint;
  49 import org.opendaylight.netconf.topology.util.messages.AnnounceMasterMountPointDown;
  50 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
  51 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeBuilder;
  52 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
  53 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.AvailableCapabilitiesBuilder;
  54 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.ClusteredConnectionStatusBuilder;
  55 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.UnavailableCapabilities;
  56 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.UnavailableCapabilitiesBuilder;
  57 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.clustered.connection.status.NodeStatus.Status;
  58 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.clustered.connection.status.NodeStatusBuilder;
  59 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.unavailable.capabilities.UnavailableCapability;
  60 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.unavailable.capabilities.UnavailableCapability.FailureReason;
  61 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.unavailable.capabilities.UnavailableCapabilityBuilder;
  62 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
  63 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  64 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeBuilder;
  65 import org.opendaylight.yangtools.yang.common.QName;
  66 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  67 import org.slf4j.Logger;
  68 import org.slf4j.LoggerFactory;
  69 import scala.concurrent.Future;
  70 import scala.concurrent.duration.FiniteDuration;
  71
  72 public class NetconfNodeManagerCallback implements NodeManagerCallback, NetconfClientSessionListener{
  73
  74     private static final Logger LOG = LoggerFactory.getLogger(NetconfNodeManagerCallback.class);
  75
  76     public static final Function<Entry<QName, FailureReason>, UnavailableCapability> UNAVAILABLE_CAPABILITY_TRANSFORMER = new Function<Entry<QName, FailureReason>, UnavailableCapability>() {
  77         @Override
  78         public UnavailableCapability apply(final Entry<QName, FailureReason> input) {
  79             return new UnavailableCapabilityBuilder()
  80                     .setCapability(input.getKey().toString())
  81                     .setFailureReason(input.getValue()).build();
  82         }
  83     };
  84     public static final Function<QName, String> AVAILABLE_CAPABILITY_TRANSFORMER = new Function<QName, String>() {
  85         @Override
  86         public String apply(QName qName) {
  87             // intern string representation of a capability to avoid duplicates
  88             return qName.toString().intern();
  89         }
  90     };
  91
  92     private static final String UNKNOWN_REASON = "Unknown reason";
  93
  94     private boolean isMaster = false;
  95     private ClusteredNetconfTopology topologyDispatcher;
  96     private final ActorSystem actorSystem;
  97     private final Cluster clusterExtension;
  98
  99     private final RoleChangeStrategy roleChangeStrategy;
 100
 101     private String nodeId;
 102     private String topologyId;
 103     private TopologyManager topologyManager;
 104     private NodeManager nodeManager;
 105     // cached context so that we can use it in callbacks from topology
 106     private ActorContext cachedContext;
 107
 108     private Node currentConfig;
 109     private Node currentOperationalNode;
 110
 111     private ConnectionStatusListenerRegistration connectionStatusregistration = null;
 112     private NetconfClientSessionListenerRegistration sessionListener = null;
 113
 114     private ActorRef masterDataBrokerRef = null;
 115     private boolean connected = false;
 116
 117     public NetconfNodeManagerCallback(final String nodeId,
 118                                       final String topologyId,
 119                                       final ActorSystem actorSystem,
 120                                       final NetconfTopology topologyDispatcher,
 121                                       final RoleChangeStrategy roleChangeStrategy) {
 122         this.nodeId = nodeId;
 123         this.topologyId = topologyId;
 124         this.actorSystem = actorSystem;
 125         this.clusterExtension = Cluster.get(actorSystem);
 126         this.topologyDispatcher = (ClusteredNetconfTopology) topologyDispatcher;
 127         this.roleChangeStrategy = roleChangeStrategy;
 128
 129         final Future<ActorRef> topologyRefFuture = actorSystem.actorSelection("/user/" + topologyId).resolveOne(FiniteDuration.create(10L, TimeUnit.SECONDS));
 130         topologyRefFuture.onComplete(new OnComplete<ActorRef>() {
 131             @Override
 132             public void onComplete(Throwable throwable, ActorRef actorRef) throws Throwable {
 133                 if (throwable != null) {
 134                     LOG.warn("Unable to resolve actor for path: {} ", "/user/" + topologyId, throwable);
 135
 136                 }
 137
 138                 LOG.debug("Actor ref for path {} resolved", "/user/" + topologyId);
 139                 topologyManager = TypedActor.get(actorSystem).typedActorOf(new TypedProps<>(TopologyManager.class, BaseTopologyManager.class), actorRef);
 140             }
 141         }, actorSystem.dispatcher());
 142
 143         final Future<ActorRef> nodeRefFuture = actorSystem.actorSelection("/user/" + topologyId + "/" + nodeId).resolveOne(FiniteDuration.create(10L, TimeUnit.SECONDS));
 144         nodeRefFuture.onComplete(new OnComplete<ActorRef>() {
 145             @Override
 146             public void onComplete(Throwable throwable, ActorRef actorRef) throws Throwable {
 147                 if (throwable != null) {
 148                     LOG.warn("Unable to resolve actor for path: {} ", "/user/" + topologyId + "/" + nodeId, throwable);
 149                 }
 150                 LOG.debug("Actor ref for path {} resolved", "/user/" + topologyId);
 151                 nodeManager = TypedActor.get(actorSystem).typedActorOf(new TypedProps<>(NodeManager.class, BaseNodeManager.class), actorRef);
 152             }
 153         }, actorSystem.dispatcher());
 154     }
 155
 156
 157     @Nonnull
 158     @Override public Node getInitialState(@Nonnull final NodeId nodeId,
 159                                           @Nonnull final Node configNode) {
 160         final NetconfNode netconfNode = configNode.getAugmentation(NetconfNode.class);
 161
 162         final Node initialNode = new NodeBuilder()
 163                 .setNodeId(nodeId)
 164                 .addAugmentation(NetconfNode.class,
 165                         new NetconfNodeBuilder()
 166                                 .setHost(netconfNode.getHost())
 167                                 .setPort(netconfNode.getPort())
 168                                 .setConnectionStatus(ConnectionStatus.Connecting)
 169                                 .setAvailableCapabilities(new AvailableCapabilitiesBuilder().setAvailableCapability(new ArrayList<String>()).build())
 170                                 .setUnavailableCapabilities(new UnavailableCapabilitiesBuilder().setUnavailableCapability(new ArrayList<UnavailableCapability>()).build())
 171                                 .setClusteredConnectionStatus(
 172                                         new ClusteredConnectionStatusBuilder()
 173                                                 .setNodeStatus(
 174                                                         Lists.newArrayList(
 175                                                                 new NodeStatusBuilder()
 176                                                                         .setNode(clusterExtension.selfAddress().toString())
 177                                                                         .setStatus(Status.Unavailable)
 178                                                                         .build()))
 179                                                 .build())
 180                                 .build())
 181                 .build();
 182
 183         if (currentOperationalNode == null) {
 184             currentOperationalNode = initialNode;
 185         }
 186
 187         return initialNode;
 188     }
 189
 190     @Nonnull @Override public Node getFailedState(@Nonnull final NodeId nodeId,
 191                                                   @Nullable final Node configNode) {
 192         final NetconfNode netconfNode = configNode == null ? currentOperationalNode.getAugmentation(NetconfNode.class) : configNode.getAugmentation(NetconfNode.class);
 193
 194         final Node failedNode = new NodeBuilder()
 195                 .setNodeId(nodeId)
 196                 .addAugmentation(NetconfNode.class,
 197                         new NetconfNodeBuilder()
 198                                 .setHost(netconfNode.getHost())
 199                                 .setPort(netconfNode.getPort())
 200                                 .setConnectionStatus(ConnectionStatus.UnableToConnect)
 201                                 .setAvailableCapabilities(new AvailableCapabilitiesBuilder().setAvailableCapability(new ArrayList<String>()).build())
 202                                 .setUnavailableCapabilities(new UnavailableCapabilitiesBuilder().setUnavailableCapability(new ArrayList<UnavailableCapability>()).build())
 203                                 .setClusteredConnectionStatus(
 204                                         new ClusteredConnectionStatusBuilder()
 205                                                 .setNodeStatus(
 206                                                         Collections.singletonList(
 207                                                                 new NodeStatusBuilder()
 208                                                                         .setNode(clusterExtension.selfAddress().toString())
 209                                                                         .setStatus(Status.Failed)
 210                                                                         .build()))
 211                                                 .build())
 212                                 .build())
 213                 .build();
 214
 215         if (currentOperationalNode == null) {
 216             currentOperationalNode = failedNode;
 217         }
 218
 219         return failedNode;
 220     }
 221
 222     @Nonnull @Override public ListenableFuture<Node> onNodeCreated(@Nonnull final NodeId nodeId,
 223                                                                    @Nonnull final Node configNode) {
 224         cachedContext = TypedActor.context();
 225         this.nodeId = nodeId.getValue();
 226         this.currentConfig = configNode;
 227         // set initial state before anything happens
 228         this.currentOperationalNode = getInitialState(nodeId, configNode);
 229
 230         // connect magic, send config into the netconf pipeline through topo dispatcher
 231         final ListenableFuture<NetconfDeviceCapabilities> connectionFuture = topologyDispatcher.connectNode(nodeId, configNode);
 232
 233         Futures.addCallback(connectionFuture, new FutureCallback<NetconfDeviceCapabilities>() {
 234             @Override
 235             public void onSuccess(@Nullable NetconfDeviceCapabilities result) {
 236                 connectionStatusregistration = topologyDispatcher.registerConnectionStatusListener(nodeId, nodeManager);
 237                 sessionListener = topologyDispatcher.registerNetconfClientSessionListener(nodeId, NetconfNodeManagerCallback.this);
 238             }
 239
 240             @Override
 241             public void onFailure(Throwable t) {
 242                 LOG.error("Connection to device failed", t);
 243             }
 244         });
 245
 246         final NetconfNode netconfNode = configNode.getAugmentation(NetconfNode.class);
 247
 248         // transform future result into state that gets written into datastore
 249         return Futures.transform(connectionFuture, new Function<NetconfDeviceCapabilities, Node>() {
 250             @Nullable
 251             @Override
 252             public Node apply(NetconfDeviceCapabilities input) {
 253                 // build state data
 254                 currentOperationalNode = new NodeBuilder().setNodeId(nodeId)
 255                         .addAugmentation(NetconfNode.class,
 256                                 new NetconfNodeBuilder()
 257                                         .setConnectionStatus(ConnectionStatus.Connected)
 258                                         .setClusteredConnectionStatus(
 259                                                 new ClusteredConnectionStatusBuilder()
 260                                                         .setNodeStatus(
 261                                                                 Collections.singletonList(
 262                                                                         new NodeStatusBuilder()
 263                                                                                 .setNode(clusterExtension.selfAddress().toString())
 264                                                                                 .setStatus(Status.Connected)
 265                                                                                 .build()))
 266                                                         .build())
 267                                         .setHost(netconfNode.getHost())
 268                                         .setPort(netconfNode.getPort())
 269                                         .setAvailableCapabilities(new AvailableCapabilitiesBuilder().setAvailableCapability(new ArrayList<String>()).build())
 270                                         .setUnavailableCapabilities(new UnavailableCapabilitiesBuilder().setUnavailableCapability(new ArrayList<UnavailableCapability>()).build())
 271                                         .build()).build();
 272                 return currentOperationalNode;
 273             }
 274         });
 275     }
 276
 277     @Nonnull
 278     @Override
 279     public ListenableFuture<Node> onNodeUpdated(@Nonnull final NodeId nodeId,
 280                                                 @Nonnull final Node configNode) {
 281         // first disconnect this node
 282         topologyDispatcher.unregisterMountPoint(nodeId);
 283
 284         if (connectionStatusregistration != null) {
 285             connectionStatusregistration.close();
 286         }
 287         topologyDispatcher.disconnectNode(nodeId);
 288
 289         // now reinit this connection with new settings
 290         final ListenableFuture<NetconfDeviceCapabilities> connectionFuture = topologyDispatcher.connectNode(nodeId, configNode);
 291
 292         Futures.addCallback(connectionFuture, new FutureCallback<NetconfDeviceCapabilities>() {
 293             @Override
 294             public void onSuccess(@Nullable NetconfDeviceCapabilities result) {
 295                 connectionStatusregistration = topologyDispatcher.registerConnectionStatusListener(nodeId, NetconfNodeManagerCallback.this);
 296             }
 297
 298             @Override
 299             public void onFailure(Throwable t) {
 300                 LOG.error("Connection to device failed", t);
 301             }
 302         });
 303
 304         final NetconfNode netconfNode = configNode.getAugmentation(NetconfNode.class);
 305
 306         return Futures.transform(connectionFuture, new Function<NetconfDeviceCapabilities, Node>() {
 307             @Nullable
 308             @Override
 309             public Node apply(NetconfDeviceCapabilities input) {
 310                 // build state data
 311                 return new NodeBuilder()
 312                         .setNodeId(nodeId)
 313                         .addAugmentation(NetconfNode.class,
 314                                 new NetconfNodeBuilder()
 315                                         .setConnectionStatus(ConnectionStatus.Connected)
 316                                         .setClusteredConnectionStatus(
 317                                                 new ClusteredConnectionStatusBuilder()
 318                                                         .setNodeStatus(
 319                                                                 Collections.singletonList(
 320                                                                         new NodeStatusBuilder()
 321                                                                                 .setNode(clusterExtension.selfAddress().toString())
 322                                                                                 .setStatus(Status.Connected)
 323                                                                                 .build()))
 324                                                         .build())
 325                                         .setHost(netconfNode.getHost())
 326                                         .setPort(netconfNode.getPort())
 327                                         .setAvailableCapabilities(new AvailableCapabilitiesBuilder().setAvailableCapability(new ArrayList<String>()).build())
 328                                         .setUnavailableCapabilities(new UnavailableCapabilitiesBuilder().setUnavailableCapability(new ArrayList<UnavailableCapability>()).build())
 329                                         .build())
 330                         .build();
 331             }
 332         });
 333     }
 334
 335     @Nonnull @Override public ListenableFuture<Void> onNodeDeleted(@Nonnull final NodeId nodeId) {
 336         // cleanup and disconnect
 337         topologyDispatcher.unregisterMountPoint(nodeId);
 338
 339         if(connectionStatusregistration != null) {
 340             connectionStatusregistration.close();
 341         }
 342         roleChangeStrategy.unregisterRoleCandidate();
 343         return topologyDispatcher.disconnectNode(nodeId);
 344     }
 345
 346     @Nonnull
 347     @Override
 348     public ListenableFuture<Node> getCurrentStatusForNode(@Nonnull NodeId nodeId) {
 349         LOG.debug("Getting current status for node: {} status: {}", nodeId, currentOperationalNode);
 350         return Futures.immediateFuture(currentOperationalNode);
 351     }
 352
 353     @Override
 354     public void onRoleChanged(final RoleChangeDTO roleChangeDTO) {
 355         topologyDispatcher.unregisterMountPoint(new NodeId(nodeId));
 356
 357         isMaster = roleChangeDTO.isOwner();
 358     }
 359
 360     @Override
 361     public void onDeviceConnected(final SchemaContext remoteSchemaContext, final NetconfSessionPreferences netconfSessionPreferences, final DOMRpcService deviceRpc) {
 362         // we need to notify the higher level that something happened, get a current status from all other nodes, and aggregate a new result
 363         connected = true;
 364         if (isMaster) {
 365             LOG.debug("Master is done with schema resolution, registering mount point");
 366             topologyDispatcher.registerMountPoint(TypedActor.context(), new NodeId(nodeId));
 367         } else if (masterDataBrokerRef != null) {
 368             LOG.warn("Device connected, master already present in topology, registering mount point");
 369             topologyDispatcher.registerMountPoint(cachedContext, new NodeId(nodeId), masterDataBrokerRef);
 370         }
 371
 372         List<String> capabilityList = new ArrayList<>();
 373         capabilityList.addAll(netconfSessionPreferences.getNetconfDeviceCapabilities().getNonModuleBasedCapabilities());
 374         capabilityList.addAll(FluentIterable.from(netconfSessionPreferences.getNetconfDeviceCapabilities().getResolvedCapabilities()).transform(AVAILABLE_CAPABILITY_TRANSFORMER).toList());
 375         final AvailableCapabilitiesBuilder avCapabalitiesBuilder = new AvailableCapabilitiesBuilder();
 376         avCapabalitiesBuilder.setAvailableCapability(capabilityList);
 377
 378         final UnavailableCapabilities unavailableCapabilities =
 379                 new UnavailableCapabilitiesBuilder().setUnavailableCapability(FluentIterable.from(netconfSessionPreferences.getNetconfDeviceCapabilities().getUnresolvedCapabilites().entrySet())
 380                         .transform(UNAVAILABLE_CAPABILITY_TRANSFORMER).toList()).build();
 381
 382         final NetconfNode netconfNode = currentConfig.getAugmentation(NetconfNode.class);
 383         currentOperationalNode = new NodeBuilder().setNodeId(new NodeId(nodeId))
 384                 .addAugmentation(NetconfNode.class,
 385                         new NetconfNodeBuilder()
 386                                 .setConnectionStatus(ConnectionStatus.Connected)
 387                                 .setClusteredConnectionStatus(
 388                                         new ClusteredConnectionStatusBuilder()
 389                                                 .setNodeStatus(
 390                                                         Collections.singletonList(
 391                                                                 new NodeStatusBuilder()
 392                                                                         .setNode(clusterExtension.selfAddress().toString())
 393                                                                         .setStatus(Status.Connected)
 394                                                                         .build()))
 395                                                 .build())
 396                                 .setHost(netconfNode.getHost())
 397                                 .setPort(netconfNode.getPort())
 398                                 .setAvailableCapabilities(avCapabalitiesBuilder.build())
 399                                 .setUnavailableCapabilities(unavailableCapabilities)
 400                                 .build())
 401                 .build();
 402         topologyManager.notifyNodeStatusChange(new NodeId(nodeId));
 403     }
 404
 405     @Override
 406     public void onDeviceDisconnected() {
 407         // we need to notify the higher level that something happened, get a current status from all other nodes, and aggregate a new result
 408         LOG.debug("onDeviceDisconnected received, unregistered role candidate");
 409         connected = false;
 410         if (isMaster) {
 411             // set master to false since we are unregistering, the ownershipChanged callback can sometimes lag behind causing multiple nodes behaving as masters
 412             isMaster = false;
 413             // onRoleChanged() callback can sometimes lag behind, so unregister the mount right when it disconnects
 414             topologyDispatcher.unregisterMountPoint(new NodeId(nodeId));
 415         }
 416
 417         final NetconfNode netconfNode = currentConfig.getAugmentation(NetconfNode.class);
 418         currentOperationalNode = new NodeBuilder().setNodeId(new NodeId(nodeId))
 419                 .addAugmentation(NetconfNode.class,
 420                         new NetconfNodeBuilder()
 421                                 .setConnectionStatus(ConnectionStatus.Connecting)
 422                                 .setAvailableCapabilities(new AvailableCapabilitiesBuilder().setAvailableCapability(new ArrayList<String>()).build())
 423                                 .setUnavailableCapabilities(new UnavailableCapabilitiesBuilder().setUnavailableCapability(new ArrayList<UnavailableCapability>()).build())
 424                                 .setClusteredConnectionStatus(
 425                                         new ClusteredConnectionStatusBuilder()
 426                                                 .setNodeStatus(
 427                                                         Collections.singletonList(
 428                                                                 new NodeStatusBuilder()
 429                                                                         .setNode(clusterExtension.selfAddress().toString())
 430                                                                         .setStatus(Status.Unavailable)
 431                                                                         .build()))
 432                                                 .build())
 433                                 .setHost(netconfNode.getHost())
 434                                 .setPort(netconfNode.getPort())
 435                                 .build()).build();
 436         topologyManager.notifyNodeStatusChange(new NodeId(nodeId));
 437     }
 438
 439     @Override
 440     public void onDeviceFailed(Throwable throwable) {
 441         // we need to notify the higher level that something happened, get a current status from all other nodes, and aggregate a new result
 442         // no need to remove mountpoint, we should receive onRoleChanged callback after unregistering from election that unregisters the mountpoint
 443         LOG.warn("Netconf node {} failed with {}", nodeId, throwable);
 444         connected = false;
 445         String reason = (throwable != null && throwable.getMessage() != null) ? throwable.getMessage() : UNKNOWN_REASON;
 446
 447         currentOperationalNode = new NodeBuilder().setNodeId(new NodeId(nodeId))
 448                 .addAugmentation(NetconfNode.class,
 449                         new NetconfNodeBuilder()
 450                                 .setConnectionStatus(ConnectionStatus.UnableToConnect)
 451                                 .setAvailableCapabilities(new AvailableCapabilitiesBuilder().setAvailableCapability(new ArrayList<String>()).build())
 452                                 .setUnavailableCapabilities(new UnavailableCapabilitiesBuilder().setUnavailableCapability(new ArrayList<UnavailableCapability>()).build())
 453                                 .setClusteredConnectionStatus(
 454                                         new ClusteredConnectionStatusBuilder()
 455                                                 .setNodeStatus(
 456                                                         Collections.singletonList(
 457                                                                 new NodeStatusBuilder()
 458                                                                         .setNode(clusterExtension.selfAddress().toString())
 459                                                                         .setStatus(Status.Failed)
 460                                                                         .build()))
 461                                                 .build())
 462                                 .setConnectedMessage(reason)
 463                                 .build()).build();
 464         topologyManager.notifyNodeStatusChange(new NodeId(nodeId));
 465     }
 466
 467     @Override
 468     public void onNotification(DOMNotification domNotification) {
 469         //NOOP
 470     }
 471
 472     @Override
 473     public void close() {
 474         //NOOP
 475     }
 476
 477     @Override
 478     public void onReceive(Object message, ActorRef actorRef) {
 479         LOG.debug("Netconf node callback received message {}", message);
 480         if (message instanceof AnnounceMasterMountPoint) {
 481             masterDataBrokerRef = actorRef;
 482             // candidate gets registered when mount point is already prepared so we can go ahead a register it
 483             if (connected) {
 484                 topologyDispatcher.registerMountPoint(TypedActor.context(), new NodeId(nodeId), masterDataBrokerRef);
 485             } else {
 486                 LOG.debug("Announce master mount point msg received but mount point is not ready yet");
 487             }
 488         } else if (message instanceof AnnounceMasterMountPointDown) {
 489             LOG.debug("Master mountpoint went down");
 490             masterDataBrokerRef = null;
 491             topologyDispatcher.unregisterMountPoint(new NodeId(nodeId));
 492         }
 493     }
 494
 495     @Override
 496     public void onSessionUp(NetconfClientSession netconfClientSession) {
 497         //NetconfClientSession is up, we can register role candidate
 498         LOG.debug("Netconf client session is up, registering role candidate");
 499         roleChangeStrategy.registerRoleCandidate(nodeManager);
 500     }
 501
 502     @Override
 503     public void onSessionDown(NetconfClientSession netconfClientSession, Exception e) {
 504         LOG.debug("Netconf client session is down, unregistering role candidate");
 505         roleChangeStrategy.unregisterRoleCandidate();
 506     }
 507
 508     @Override
 509     public void onSessionTerminated(NetconfClientSession netconfClientSession, NetconfTerminationReason netconfTerminationReason) {
 510         LOG.debug("Netconf client session is down, unregistering role candidate");
 511         roleChangeStrategy.unregisterRoleCandidate();
 512     }
 513
 514     @Override
 515     public void onMessage(NetconfClientSession netconfClientSession, NetconfMessage netconfMessage) {
 516         //NOOP
 517     }
 518 }