Java tutorial
/** * 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. */ package com.alibaba.rocketmq.tools.command.namesrv; import com.alibaba.rocketmq.remoting.RPCHook; import com.alibaba.rocketmq.tools.admin.DefaultMQAdminExt; import com.alibaba.rocketmq.tools.command.SubCommand; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; import java.util.Arrays; import java.util.List; import java.util.Properties; /** * @author xigu.lx */ public class UpdateNamesrvConfigCommand implements SubCommand { @Override public String commandName() { return "updateNamesrvConfig"; } @Override public String commandDesc() { return "Update configs of name server."; } @Override public Options buildCommandlineOptions(final Options options) { Option opt = new Option("k", "key", true, "config key"); opt.setRequired(true); options.addOption(opt); opt = new Option("v", "value", true, "config value"); opt.setRequired(true); options.addOption(opt); return options; } @Override public void execute(final CommandLine commandLine, final Options options, final RPCHook rpcHook) { DefaultMQAdminExt defaultMQAdminExt = new DefaultMQAdminExt(rpcHook); defaultMQAdminExt.setInstanceName(Long.toString(System.currentTimeMillis())); try { // key name String key = commandLine.getOptionValue('k').trim(); // key name String value = commandLine.getOptionValue('v').trim(); Properties properties = new Properties(); properties.put(key, value); // servers String servers = commandLine.getOptionValue('n'); List<String> serverList = null; if (servers != null && servers.length() > 0) { String[] serverArray = servers.trim().split(";"); if (serverArray != null && serverArray.length > 0) { serverList = Arrays.asList(serverArray); } } defaultMQAdminExt.start(); defaultMQAdminExt.updateNameServerConfig(properties, serverList); System.out.printf("update name server config success!%s\n%s : %s\n", serverList == null ? "" : serverList, key, value); return; } catch (Exception e) { e.printStackTrace(); } finally { defaultMQAdminExt.shutdown(); } } }