001/* 002 * (C) Copyright 2017 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bdelbosc 018 */ 019package org.nuxeo.lib.stream.tools.command; 020 021import org.apache.commons.cli.CommandLine; 022import org.apache.commons.cli.Option; 023import org.apache.commons.cli.Options; 024import org.nuxeo.lib.stream.computation.Record; 025import org.nuxeo.lib.stream.log.LogLag; 026import org.nuxeo.lib.stream.log.LogManager; 027import org.nuxeo.lib.stream.log.LogTailer; 028 029/** 030 * @since 9.3 031 */ 032public class ResetCommand extends Command { 033 034 protected static final String NAME = "reset"; 035 036 @Override 037 public String name() { 038 return NAME; 039 } 040 041 @Override 042 public void updateOptions(Options options) { 043 options.addOption(Option.builder("l") 044 .longOpt("log-name") 045 .desc("Log name") 046 .required() 047 .hasArg() 048 .argName("LOG_NAME") 049 .build()); 050 options.addOption(Option.builder("g") 051 .longOpt("group") 052 .desc("Consumer group") 053 .required() 054 .hasArg() 055 .argName("GROUP") 056 .build()); 057 } 058 059 @Override 060 public boolean run(LogManager manager, CommandLine cmd) throws InterruptedException { 061 String name = cmd.getOptionValue("log-name"); 062 String group = cmd.getOptionValue("group"); 063 reset(manager, group, name); 064 return true; 065 } 066 067 protected void reset(LogManager manager, String group, String name) { 068 LogLag lag = manager.getLag(name, group); 069 long pos = lag.lower(); 070 try (LogTailer<Record> tailer = manager.createTailer(group, name)) { 071 tailer.reset(); 072 } 073 System.out.println(String.format("# Reset log %s, group: %s, from: %s to 0", name, group, pos)); 074 } 075}