com.taobao.metamorphosis.tools.shell.SlaveStatus.java Source code

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Here is the source code for com.taobao.metamorphosis.tools.shell.SlaveStatus.java

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/*
 * (C) 2007-2012 Alibaba Group Holding Limited.
 * 
 * Licensed 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.
 * Authors:
 *   wuhua <wq163@163.com> , boyan <killme2008@gmail.com>
 */
package com.taobao.metamorphosis.tools.shell;

import java.io.PrintStream;
import java.io.PrintWriter;

import javax.management.ObjectInstance;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Options;

import com.taobao.metamorphosis.tools.utils.CommandLineUtils;
import com.taobao.metamorphosis.tools.utils.JMXClient;

/**
 * <pre>
 * Query asynchronous slave status.
 * usage:
 *      SlaveStatus
 *      SlaveStatus -host 10.2.2.3
 *      SlaveStatus -port 9999
 *      SlaveStatus -host 10.2.2.3 -port 9999
 * </pre>
 * 
 * @author 
 * @since 2011-7-19 06:02:52
 */

public class SlaveStatus extends ShellTool {

    final static protected String HANDLE_NANE = "com.taobao.metamorphosis.metaslave:type=SubscribeHandler,*";

    public SlaveStatus(PrintStream out) {
        super(out);
    }

    public SlaveStatus(PrintWriter out) {
        super(out);
    }

    public static void main(String[] args) throws Exception {
        new SlaveStatus(System.out).doMain(args);
    }

    @Override
    public void doMain(String[] args) throws Exception {
        CommandLine commandLine = CommandLineUtils.parseCmdLine(args,
                new Options().addOption("host", true, "host").addOption("port", true, "port"));

        String host = commandLine.getOptionValue("host", "127.0.0.1");
        int port = Integer.parseInt(commandLine.getOptionValue("port", "9123"));

        JMXClient jmxClient = JMXClient.getJMXClient(host, port);

        this.println("connected to " + jmxClient.getAddressAsString());

        ObjectInstance metaConfigInstance = jmxClient.queryMBeanForOne(HANDLE_NANE);
        if (metaConfigInstance != null) {
            Object result = jmxClient.getAttribute(metaConfigInstance.getObjectName(), "Status");
            System.out.println(result);
            jmxClient.close();
            this.println("invoke " + metaConfigInstance.getClassName() + "#reload success");
        } else {
            this.println(" " + METACONFIG_NAME);
        }
    }
}