server/src/com/cloud/server/LockMasterListener.java

// 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
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// under the License.
package com.cloud.server;

import java.util.List;

import com.cloud.cluster.ClusterManagerListener;
import com.cloud.cluster.ManagementServerHost;
import com.cloud.utils.db.Merovingian2;

/**
 * when a management server is down.
 *
 */
public class LockMasterListener implements ClusterManagerListener {
    Merovingian2 _lockMaster;

    public LockMasterListener(long msId) {
        _lockMaster = Merovingian2.createLockMaster(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) {
            _lockMaster.cleanupForServer(node.getMsid());
        }
    }

    @Override
    public void onManagementNodeIsolated() {
    }

}