applications/forwardingrules-manager/src/main/java/org/opendaylight/openflowplugin/applications/frm/impl/DeviceMastershipManager.java

   1 /**
   2  * Copyright (c) 2016 Pantheon Technologies s.r.o. 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.frm.impl;
  10
  11 import java.util.concurrent.ConcurrentHashMap;
  12 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  13 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  15 import org.slf4j.Logger;
  16 import org.slf4j.LoggerFactory;
  17
  18 /**
  19  * Manager for clustering service registrations of {@link DeviceMastership}.
  20  */
  21 public class DeviceMastershipManager {
  22     private static final Logger LOG = LoggerFactory.getLogger(DeviceMastershipManager.class);
  23     private final ClusterSingletonServiceProvider clusterSingletonService;
  24     private final ConcurrentHashMap<NodeId, DeviceMastership> deviceMasterships = new ConcurrentHashMap();
  25
  26     public DeviceMastershipManager(final ClusterSingletonServiceProvider clusterSingletonService) {
  27         this.clusterSingletonService = clusterSingletonService;
  28     }
  29
  30     public void onDeviceConnected(final NodeId nodeId) {
  31         final DeviceMastership mastership = new DeviceMastership(nodeId);
  32         final ClusterSingletonServiceRegistration registration = clusterSingletonService.registerClusterSingletonService(mastership);
  33         mastership.setClusterSingletonServiceRegistration(registration);
  34         deviceMasterships.put(nodeId, mastership);
  35         LOG.debug("FRS service registered for: {}", nodeId.getValue());
  36     }
  37
  38
  39     public void onDeviceDisconnected(final NodeId nodeId) {
  40         final DeviceMastership mastership = deviceMasterships.remove(nodeId);
  41         final ClusterSingletonServiceRegistration registration = mastership.getClusterSingletonServiceRegistration();
  42         if (registration != null) {
  43             try {
  44                 registration.close();
  45             } catch (Exception e) {
  46                 LOG.error("FRS cluster service close fail: {} {}", nodeId.getValue(), e);
  47             }
  48         }
  49         LOG.debug("FRS service unregistered for: {}", nodeId.getValue());
  50     }
  51
  52     public boolean isDeviceMastered(final NodeId nodeId) {
  53         return deviceMasterships.get(nodeId) != null && deviceMasterships.get(nodeId).isDeviceMastered();
  54     }
  55
  56 }