Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * 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.
 */

import java.lang.management.ManagementFactory;

import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.InstanceAlreadyExistsException;

public class Main {
    /**
     * Register the MBean using our standard MBeanName format
     * "hadoop:service=<serviceName>,name=<nameName>"
     * Where the <serviceName> and <nameName> are the supplied parameters
     *    
     * @param serviceName
     * @param nameName
     * @param theMbean - the MBean to register
     * @return the named used to register the MBean
     */
    static public ObjectName registerMBean(final String serviceName, final String nameName, final Object theMbean) {
        final MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        ObjectName name = getMBeanName(serviceName, nameName);
        try {
            mbs.registerMBean(theMbean, name);
            return name;
        } catch (InstanceAlreadyExistsException ie) {
            // Ignore if instance already exists 
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    static private ObjectName getMBeanName(final String serviceName, final String nameName) {
        ObjectName name = null;
        try {
            name = new ObjectName("hadoop:" + "service=" + serviceName + ",name=" + nameName);
        } catch (MalformedObjectNameException e) {
            e.printStackTrace();
        }
        return name;
    }
}