apps/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 package org.opendaylight.netconf.topology.singleton.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import akka.util.Timeout;
  13 import com.google.common.annotations.VisibleForTesting;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import org.eclipse.jdt.annotation.NonNull;
  16 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
  17 import org.opendaylight.mdsal.singleton.api.ClusterSingletonService;
  18 import org.opendaylight.mdsal.singleton.api.ServiceGroupIdentifier;
  19 import org.opendaylight.netconf.client.mdsal.api.DeviceActionFactory;
  20 import org.opendaylight.netconf.client.mdsal.api.RemoteDeviceId;
  21 import org.opendaylight.netconf.client.mdsal.api.SchemaResourceManager;
  22 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
  23 import org.opendaylight.netconf.topology.spi.NetconfClientConfigurationBuilderFactory;
  24 import org.opendaylight.netconf.topology.spi.NetconfNodeUtils;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev231121.NetconfNode;
  26 import org.opendaylight.yangtools.util.concurrent.FluentFutures;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 class NetconfTopologyContext implements ClusterSingletonService, AutoCloseable {
  31     private static final Logger LOG = LoggerFactory.getLogger(NetconfTopologyContext.class);
  32
  33     private final @NonNull ServiceGroupIdentifier serviceGroupIdent;
  34     private final NetconfNodeContext topologySingleton;
  35
  36     private volatile boolean closed;
  37     private volatile boolean isMaster;
  38
  39     private RemoteDeviceId remoteDeviceId;
  40
  41     NetconfTopologyContext(final SchemaResourceManager schemaManager,
  42             final DOMMountPointService mountPointService, final NetconfClientConfigurationBuilderFactory builderFactory,
  43             final DeviceActionFactory deviceActionFactory, final Timeout actorResponseWaitTime,
  44             final ServiceGroupIdentifier serviceGroupIdent, final NetconfTopologySetup setup) {
  45         this.serviceGroupIdent = requireNonNull(serviceGroupIdent);
  46         remoteDeviceId = NetconfNodeUtils.toRemoteDeviceId(setup.getNode().getNodeId(),
  47                 setup.getNode().augmentation(NetconfNode.class));
  48
  49         topologySingleton = new NetconfNodeContext(setup, schemaManager, mountPointService, builderFactory,
  50             deviceActionFactory, remoteDeviceId, actorResponseWaitTime);
  51     }
  52
  53     @VisibleForTesting
  54     protected NetconfNodeContext getTopologySingleton() {
  55         // FIXME we have to access topology singleton via this method because of mocking in MountPointEndToEndTest
  56         return topologySingleton;
  57     }
  58
  59     @Override
  60     public void instantiateServiceInstance() {
  61         LOG.info("Leader was selected: {}", remoteDeviceId.host().getIpAddress());
  62         if (closed) {
  63             LOG.warn("Instance is already closed.");
  64             return;
  65         }
  66         isMaster = true;
  67         getTopologySingleton().becomeTopologyLeader();
  68     }
  69
  70     // called when master is down/changed to slave
  71     @Override
  72     public ListenableFuture<?> closeServiceInstance() {
  73         // this method is also called when topology data are deleted
  74         LOG.info("Follower was selected: {}", remoteDeviceId.host().getIpAddress());
  75         if (closed) {
  76             LOG.warn("Instance is already closed.");
  77             return FluentFutures.immediateNullFluentFuture();
  78         }
  79         getTopologySingleton().becomeTopologyFollower();
  80         return FluentFutures.immediateNullFluentFuture();
  81     }
  82
  83     void refresh(final @NonNull NetconfTopologySetup setup) {
  84         final var node = requireNonNull(setup).getNode();
  85         remoteDeviceId = NetconfNodeUtils.toRemoteDeviceId(node.getNodeId(), node.augmentation(NetconfNode.class));
  86
  87         final var singleton = getTopologySingleton();
  88         if (isMaster) {
  89             singleton.refreshSetupConnection(setup, remoteDeviceId);
  90         } else {
  91             singleton.refreshDevice(setup, remoteDeviceId);
  92         }
  93     }
  94
  95     @Override
  96     public ServiceGroupIdentifier getIdentifier() {
  97         return serviceGroupIdent;
  98     }
  99
 100     @Override
 101     public void close() {
 102         if (closed) {
 103             LOG.warn("Instance is already closed.");
 104             return;
 105         }
 106         getTopologySingleton().close();
 107         closed = true;
 108     }
 109 }