applications/forwardingrules-sync/src/main/java/org/opendaylight/openflowplugin/applications/frsync/impl/clustering/DeviceMastershipManager.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.annotations.VisibleForTesting;
  12 import java.util.concurrent.ConcurrentHashMap;
  13 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  14 import org.opendaylight.openflowplugin.applications.frsync.util.ReconciliationRegistry;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 /**
  20  * Manager for clustering service registrations of {@link DeviceMastership}.
  21  */
  22 public class DeviceMastershipManager {
  23     private static final Logger LOG = LoggerFactory.getLogger(DeviceMastershipManager.class);
  24     private final ClusterSingletonServiceProvider clusterSingletonService;
  25     private final ConcurrentHashMap<NodeId, DeviceMastership> deviceMasterships = new ConcurrentHashMap();
  26     private final ReconciliationRegistry reconciliationRegistry;
  27
  28     public DeviceMastershipManager(final ClusterSingletonServiceProvider clusterSingletonService,
  29                                    final ReconciliationRegistry reconciliationRegistry) {
  30         this.clusterSingletonService = clusterSingletonService;
  31         this.reconciliationRegistry = reconciliationRegistry;
  32     }
  33
  34     public void onDeviceConnected(final NodeId nodeId) {
  35         final DeviceMastership mastership = new DeviceMastership(nodeId, reconciliationRegistry, clusterSingletonService);
  36         deviceMasterships.put(nodeId, mastership);
  37         LOG.debug("FRS service registered for: {}", nodeId.getValue());
  38     }
  39
  40     public void onDeviceDisconnected(final NodeId nodeId) {
  41         final DeviceMastership mastership = deviceMasterships.remove(nodeId);
  42         if (mastership != null) {
  43             mastership.close();
  44         }
  45         LOG.debug("FRS service unregistered for: {}", nodeId.getValue());
  46     }
  47
  48     public boolean isDeviceMastered(final NodeId nodeId) {
  49         return deviceMasterships.get(nodeId) != null && deviceMasterships.get(nodeId).isDeviceMastered();
  50     }
  51
  52     @VisibleForTesting
  53     ConcurrentHashMap<NodeId, DeviceMastership> getDeviceMasterships() {
  54         return deviceMasterships;
  55     }
  56
  57 }