com.alibaba.rocketmq.tools.command.topic.TopicRouteSubCommand.java Source code

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Here is the source code for com.alibaba.rocketmq.tools.command.topic.TopicRouteSubCommand.java

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/**
 * Copyright (C) 2010-2013 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.
 */
package com.alibaba.rocketmq.tools.command.topic;

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

import com.alibaba.rocketmq.common.protocol.route.TopicRouteData;
import com.alibaba.rocketmq.remoting.RPCHook;
import com.alibaba.rocketmq.tools.admin.DefaultMQAdminExt;
import com.alibaba.rocketmq.tools.command.SubCommand;

/**
 * Topic?
 * 
 * @author shijia.wxr<vintage.wang@gmail.com>
 * @since 2013-8-3
 */
public class TopicRouteSubCommand implements SubCommand {

    @Override
    public String commandName() {
        return "topicRoute";
    }

    @Override
    public String commandDesc() {
        return "Examine topic route info";
    }

    @Override
    public Options buildCommandlineOptions(Options options) {
        Option opt = new Option("t", "topic", true, "topic name");
        opt.setRequired(true);
        options.addOption(opt);

        return options;
    }

    @Override
    public void execute(final CommandLine commandLine, final Options options, RPCHook rpcHook) {
        DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook);

        defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis()));

        try {
            defaultMQAdminExt.start();

            String topic = commandLine.getOptionValue('t').trim();
            TopicRouteData topicRouteData = defaultMQAdminExt.examineTopicRouteInfo(topic);
            String json = topicRouteData.toJson(true);
            System.out.println(json);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            defaultMQAdminExt.shutdown();
        }
    }
}