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.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  15 import org.opendaylight.openflowplugin.applications.frsync.util.ReconciliationRegistry;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 /**
  21  * Manager for clustering service registrations of {@link DeviceMastership}.
  22  */
  23 public class DeviceMastershipManager {
  24     private static final Logger LOG = LoggerFactory.getLogger(DeviceMastershipManager.class);
  25     private final ClusterSingletonServiceProvider clusterSingletonService;
  26     private final ConcurrentHashMap<NodeId, DeviceMastership> deviceMasterships = new ConcurrentHashMap();
  27     private final ReconciliationRegistry reconciliationRegistry;
  28
  29     public DeviceMastershipManager(final ClusterSingletonServiceProvider clusterSingletonService,
  30                                    final ReconciliationRegistry reconciliationRegistry) {
  31         this.clusterSingletonService = clusterSingletonService;
  32         this.reconciliationRegistry = reconciliationRegistry;
  33     }
  34
  35     public void onDeviceConnected(final NodeId nodeId) {
  36         final DeviceMastership mastership = new DeviceMastership(nodeId, reconciliationRegistry);
  37         final ClusterSingletonServiceRegistration registration = clusterSingletonService.registerClusterSingletonService(mastership);
  38         mastership.setClusterSingletonServiceRegistration(registration);
  39         deviceMasterships.put(nodeId, mastership);
  40         LOG.debug("FRS service registered for: {}", nodeId.getValue());
  41     }
  42
  43
  44     public void onDeviceDisconnected(final NodeId nodeId) {
  45         final DeviceMastership mastership = deviceMasterships.remove(nodeId);
  46         final ClusterSingletonServiceRegistration registration = mastership.getClusterSingletonServiceRegistration();
  47         if (registration != null) {
  48             try {
  49                 registration.close();
  50             } catch (Exception e) {
  51                 LOG.error("FRS cluster service close fail: {}", nodeId.getValue());
  52             }
  53         }
  54         LOG.debug("FRS service unregistered for: {}", nodeId.getValue());
  55     }
  56
  57     public boolean isDeviceMastered(final NodeId nodeId) {
  58         return deviceMasterships.get(nodeId) != null && deviceMasterships.get(nodeId).isDeviceMastered();
  59     }
  60
  61     @VisibleForTesting
  62     ConcurrentHashMap<NodeId, DeviceMastership> getDeviceMasterships() {
  63         return deviceMasterships;
  64     }
  65 }