Java tutorial
/* * Copyright 2010-2011 the original author or authors. * * 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.ifeng.logparser; import org.apache.hadoop.conf.Configured; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; import org.apache.hadoop.util.Tool; import org.apache.hadoop.util.ToolRunner; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * @version 0.1 * * @author Hefei Li * * @since Apr 10, 2015 */ public class NginxLogDriver2 extends Configured implements Tool { private static final Logger log = LoggerFactory.getLogger(NginxLogDriver2.class); @Override public int run(String[] args) throws Exception { if (args.length != 2) { System.err.printf("Usage: %s [generic options] <input> <output>\n", getClass().getSimpleName()); ToolRunner.printGenericCommandUsage(System.err); return -1; } log.info("Input: {} , Outpu: {}", args[0], args[1]); Job job = Job.getInstance(super.getConf()); //FileInputFormat.setInputDirRecursive(job, true); FileInputFormat.addInputPath(job, new Path(args[0])); FileOutputFormat.setOutputPath(job, new Path(args[1])); //FileInputFormat.addInputPaths(job, args[0]); job.setMapperClass(NginxLogMapper.class); job.setReducerClass(NginxLogReducer.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(Text.class); return job.waitForCompletion(true) ? 0 : 1; } public static void main(String[] args) throws Exception { /*String input = "/home/lhfei/app_tmp/data/"; String output = "src/test/resources/output/"; String path = ""; for(int i=0 ; i<24; i++){ if(i<10){ path = "0"+i; } input += path + "/wxlive.access.log"; output += path; if (args == null || args.length != 2) { args = new String[] {input + path + "/wxlive.access.log", output + path}; } int exitCode = ToolRunner.run(new NginxLogDriver2(), args); } */ if (args.length != 2) { System.err.printf("Usage: [generic options] <input> <output>\n"); System.exit(-1); } String input = args[0]; String output = args[1]; String path = ""; String[] paths = new String[2]; for (int i = 10; i < 24; i++) { if (i < 10) { path = "0" + i; } else { path = "" + i; } paths[0] = input + path + "/wxlive.access.log"; paths[1] = output + path + "/"; int exitCode = ToolRunner.run(new NginxLogDriver2(), paths); } } }