content: // Licensed to the Apache Software Foundation (ASF) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The ASF licenses this file
  // to you under the Apache License, Version 2.0 (the
  // "License"); you may not use this file except in compliance
  // with the License.  You may obtain a copy of the License at
  //
  //   http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing,
  // software distributed under the License is distributed on an
  // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  // KIND, either express or implied.  See the License for the
  // specific language governing permissions and limitations
  // under the License.
  package com.cloud.server;
  
  import java.util.List;
  
  import com.cloud.cluster.ClusterManagerListener;
  import org.apache.cloudstack.management.ManagementServerHost;
  import com.cloud.utils.db.Merovingian2;
  
  /**
   * when a management server is down.
   *
   */
  public class LockControllerListener implements ClusterManagerListener {
      Merovingian2 _lockController;
  
      public LockControllerListener(long msId) {
          _lockController = Merovingian2.createLockController(msId);
      }
  
      @Override
      public void onManagementNodeJoined(List<? extends ManagementServerHost> nodeList, long selfNodeId) {
      }
  
      @Override
      public void onManagementNodeLeft(List<? extends ManagementServerHost> nodeList, long selfNodeId) {
          for (ManagementServerHost node : nodeList) {
              _lockController.cleanupForServer(node.getMsid());
          }
      }
  
      @Override
      public void onManagementNodeIsolated() {
      }
  
  }
  