applications/forwardingrules-sync/src/main/java/org/opendaylight/openflowplugin/applications/frsync/impl/clustering/DeviceMastership.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.openflowplugin.applications.frsync.impl.clustering;
  10
  11 import com.google.common.util.concurrent.Futures;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
  14 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  15 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  16 import org.opendaylight.openflowplugin.applications.frsync.util.ReconciliationRegistry;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 /**
  22  * {@link ClusterSingletonService} clusterSingletonServiceRegistration per connected device.
  23  */
  24 public class DeviceMastership implements ClusterSingletonService {
  25     private static final Logger LOG = LoggerFactory.getLogger(DeviceMastership.class);
  26     private final NodeId nodeId;
  27     private final ServiceGroupIdentifier identifier;
  28     private final ReconciliationRegistry reconciliationRegistry;
  29     private ClusterSingletonServiceRegistration clusterSingletonServiceRegistration;
  30     private boolean deviceMastered;
  31
  32     public DeviceMastership(final NodeId nodeId, final ReconciliationRegistry reconciliationRegistry) {
  33         this.nodeId = nodeId;
  34         this.identifier = ServiceGroupIdentifier.create(nodeId.getValue());
  35         this.reconciliationRegistry = reconciliationRegistry;
  36         this.deviceMastered = false;
  37     }
  38
  39     @Override
  40     public void instantiateServiceInstance() {
  41         LOG.debug("FRS started for: {}", nodeId.getValue());
  42         deviceMastered = true;
  43         reconciliationRegistry.register(nodeId);
  44     }
  45
  46     @Override
  47     public ListenableFuture<Void> closeServiceInstance() {
  48         LOG.debug("FRS stopped for: {}", nodeId.getValue());
  49         deviceMastered = false;
  50         reconciliationRegistry.unregisterIfRegistered(nodeId);
  51         return Futures.immediateFuture(null);
  52     }
  53
  54     @Override
  55     public ServiceGroupIdentifier getIdentifier() {
  56         return identifier;
  57     }
  58
  59     public boolean isDeviceMastered() {
  60         return deviceMastered;
  61     }
  62
  63     public void setClusterSingletonServiceRegistration(final ClusterSingletonServiceRegistration registration) {
  64         this.clusterSingletonServiceRegistration = registration;
  65     }
  66
  67     public ClusterSingletonServiceRegistration getClusterSingletonServiceRegistration() {
  68         return clusterSingletonServiceRegistration;
  69     }
  70
  71 }