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.pinterest.secor.main; import com.pinterest.secor.common.SecorConfig; import com.pinterest.secor.common.TopicPartition; import com.pinterest.secor.common.ZookeeperConnector; import org.apache.commons.cli.*; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Zookeeper client main. * * Run: * $ cd optimus/secor * $ mvn package * $ cd target * $ java -ea -Dlog4j.configuration=log4j.dev.properties -Dconfig=secor.dev.backup.properties \ * -cp "secor-0.1-SNAPSHOT.jar:lib/*" com.pinterest.secor.main.ZookeeperClientMain -c \ * delete_committed_offsets -t test -p 0 * * @author Pawel Garbacki (pawel@pinterest.com) */ public class ZookeeperClientMain { private static final Logger LOG = LoggerFactory.getLogger(LogFilePrinterMain.class); private static CommandLine parseArgs(String[] args) throws ParseException { Options options = new Options(); options.addOption(OptionBuilder.withLongOpt("command") .withDescription("command name. One of \"delete_committed_offsets\"").hasArg() .withArgName("<command>").withType(String.class).create("c")); options.addOption(OptionBuilder.withLongOpt("topic").withDescription("topic whose offset should be read") .hasArg().withArgName("<topic>").withType(String.class).create("t")); options.addOption(OptionBuilder.withLongOpt("partition") .withDescription("kafka partition whose offset should be read").hasArg().withArgName("<partition>") .withType(Number.class).create("p")); CommandLineParser parser = new GnuParser(); return parser.parse(options, args); } public static void main(String[] args) { try { CommandLine commandLine = parseArgs(args); String command = commandLine.getOptionValue("command"); if (!command.equals("delete_committed_offsets")) { throw new IllegalArgumentException("command has to be one of \"delete_committed_offsets\""); } SecorConfig config = SecorConfig.load(); ZookeeperConnector zookeeperConnector = new ZookeeperConnector(config); String topic = commandLine.getOptionValue("topic"); if (commandLine.hasOption("partition")) { int partition = ((Number) commandLine.getParsedOptionValue("partition")).intValue(); TopicPartition topicPartition = new TopicPartition(topic, partition); zookeeperConnector.deleteCommittedOffsetPartitionCount(topicPartition); } else { zookeeperConnector.deleteCommittedOffsetTopicCount(topic); } } catch (Throwable t) { LOG.error("Zookeeper client failed", t); System.exit(1); } } }