Java tutorial
/** * 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.ict.dtube.tools.command.message; import java.io.DataOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; import com.ict.dtube.client.exception.MQBrokerException; import com.ict.dtube.client.exception.MQClientException; import com.ict.dtube.common.UtilAll; import com.ict.dtube.common.message.MessageExt; import com.ict.dtube.remoting.common.RemotingHelper; import com.ict.dtube.remoting.exception.RemotingException; import com.ict.dtube.tools.admin.DefaultMQAdminExt; import com.ict.dtube.tools.command.SubCommand; /** * ??Id? * * @author shijia.wxr<vintage.wang@gmail.com> * @since 2013-8-12 */ public class QueryMsgByIdSubCommand implements SubCommand { @Override public String commandName() { return "queryMsgById"; } @Override public String commandDesc() { return "Query Message by Id"; } @Override public Options buildCommandlineOptions(Options options) { Option opt = new Option("i", "msgId", true, "Message Id"); opt.setRequired(true); options.addOption(opt); return options; } public static void queryById(final DefaultMQAdminExt admin, final String msgId) throws MQClientException, RemotingException, MQBrokerException, InterruptedException, IOException { admin.start(); MessageExt msg = admin.viewMessage(msgId); // ? body String bodyTmpFilePath = createBodyFile(msg); System.out.printf("%-20s %s\n", // "Topic:", // msg.getTopic()// ); System.out.printf("%-20s %s\n", // "Tags:", // "[" + msg.getTags() + "]"// ); System.out.printf("%-20s %s\n", // "Keys:", // "[" + msg.getKeys() + "]"// ); System.out.printf("%-20s %d\n", // "Queue ID:", // msg.getQueueId()// ); System.out.printf("%-20s %d\n", // "Queue Offset:", // msg.getQueueOffset()// ); System.out.printf("%-20s %d\n", // "CommitLog Offset:", // msg.getCommitLogOffset()// ); System.out.printf("%-20s %d\n", // "Reconsume Times:", // msg.getReconsumeTimes()// ); System.out.printf("%-20s %s\n", // "Born Timestamp:", // UtilAll.timeMillisToHumanString2(msg.getBornTimestamp())// ); System.out.printf("%-20s %s\n", // "Store Timestamp:", // UtilAll.timeMillisToHumanString2(msg.getStoreTimestamp())// ); System.out.printf("%-20s %s\n", // "Born Host:", // RemotingHelper.parseSocketAddressAddr(msg.getBornHost())// ); System.out.printf("%-20s %s\n", // "Store Host:", // RemotingHelper.parseSocketAddressAddr(msg.getStoreHost())// ); System.out.printf("%-20s %d\n", // "System Flag:", // msg.getSysFlag()// ); System.out.printf("%-20s %s\n", // "Properties:", // msg.getProperties() != null ? msg.getProperties().toString() : ""// ); System.out.printf("%-20s %s\n", // "Message Body Path:", // bodyTmpFilePath// ); } @Override public void execute(CommandLine commandLine, Options options) { DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(); defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis())); try { final String msgId = commandLine.getOptionValue('i').trim(); queryById(defaultMQAdminExt, msgId); } catch (Exception e) { e.printStackTrace(); } finally { defaultMQAdminExt.shutdown(); } } private static String createBodyFile(MessageExt msg) throws IOException { DataOutputStream dos = null; try { String bodyTmpFilePath = "/tmp/dtube/msgbodys"; File file = new File(bodyTmpFilePath); if (!file.exists()) { file.mkdirs(); } bodyTmpFilePath = bodyTmpFilePath + "/" + msg.getMsgId(); dos = new DataOutputStream(new FileOutputStream(bodyTmpFilePath)); dos.write(msg.getBody()); return bodyTmpFilePath; } finally { if (dos != null) dos.close(); } } }