Java tutorial
/** * Copyright 2014 tgrape Inc. * * 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 ph.fingra.hadoop.mapred.parts.performance; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.conf.Configured; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.LongWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapreduce.Job; import org.apache.hadoop.mapreduce.Mapper; import org.apache.hadoop.mapreduce.Partitioner; import org.apache.hadoop.mapreduce.Reducer; 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 ph.fingra.hadoop.common.ConstantVars; import ph.fingra.hadoop.common.FingraphConfig; import ph.fingra.hadoop.common.HfsPathInfo; import ph.fingra.hadoop.common.LfsPathInfo; import ph.fingra.hadoop.common.ConstantVars.DataUsable; import ph.fingra.hadoop.common.ConstantVars.LogParserType; import ph.fingra.hadoop.common.ConstantVars.LogValidation; import ph.fingra.hadoop.common.domain.TargetDate; import ph.fingra.hadoop.common.logger.ErrorLogger; import ph.fingra.hadoop.common.logger.WorkLogger; import ph.fingra.hadoop.common.util.ArgsOptionUtil; import ph.fingra.hadoop.common.util.ConvertTimeZone; import ph.fingra.hadoop.common.util.FormatUtil; import ph.fingra.hadoop.mapred.common.CopyToLocalFile; import ph.fingra.hadoop.mapred.common.HdfsFileUtil; import ph.fingra.hadoop.mapred.parse.CommonLogParser; public class PageviewStatistic extends Configured implements Tool { @Override public int run(String[] args) throws Exception { String opt_mode = ""; String opt_target = ""; int opt_numreduce = 0; FingraphConfig fingraphConfig = new FingraphConfig(); TargetDate targetDate = null; Configuration conf = getConf(); Path[] inputPaths = null; Path outputPath = null; // get -D optional value opt_mode = conf.get(ConstantVars.DOPTION_RUNMODE, ""); opt_target = conf.get(ConstantVars.DOPTION_TARGETDATE, ""); opt_numreduce = conf.getInt(ConstantVars.DOPTION_NUMREDUCE, 0); // runmode & targetdate check if (ArgsOptionUtil.checkRunmode(opt_mode) == false) { throw new Exception("option value of -Drunmode is not correct"); } if (opt_target.isEmpty() == false) { if (ArgsOptionUtil.checkTargetDateByMode(opt_mode, opt_target) == false) { throw new Exception("option value of -Dtargetdate is not correct"); } } else { opt_target = ArgsOptionUtil.getDefaultTargetDateByMode(opt_mode); } // get TargetDate info from opt_target targetDate = ArgsOptionUtil.getTargetDate(opt_mode, opt_target); WorkLogger.log(PageviewStatistic.class.getSimpleName() + " : [run mode] " + opt_mode + " , [target date] " + targetDate.getFulldate() + " , [reducer count] " + opt_numreduce); // get this job's output path HfsPathInfo hfsPath = new HfsPathInfo(fingraphConfig, opt_mode); outputPath = new Path(hfsPath.getPageview()); // delete previous output path if is exist FileSystem fs = FileSystem.get(conf); List<Path> deletePaths = new ArrayList<Path>(); deletePaths.add(outputPath); for (Path deletePath : deletePaths) { fs.delete(deletePath, true); } int status = 0; if (opt_mode.equals(ConstantVars.RUNMODE_HOUR)) { // get this job's input path - original log file inputPaths = HdfsFileUtil.getOriginInputPaths(fingraphConfig, opt_mode, targetDate.getYear(), targetDate.getMonth(), targetDate.getDay(), targetDate.getHour(), targetDate.getWeek()); if (inputPaths == null) { WorkLogger.log("There is no input data."); return 0; } Job job = createHourJob(conf, inputPaths, outputPath, opt_numreduce, fingraphConfig, targetDate); status = job.waitForCompletion(true) ? 0 : 1; } else { // get this job's input path - transform log file inputPaths = HdfsFileUtil.getTransformInputPaths(fingraphConfig, opt_mode, targetDate.getYear(), targetDate.getMonth(), targetDate.getDay(), targetDate.getHour(), targetDate.getWeek()); if (inputPaths == null) { WorkLogger.log("There is no input data."); return 0; } Job job = createJob(conf, inputPaths, outputPath, opt_numreduce, fingraphConfig); status = job.waitForCompletion(true) ? 0 : 1; } // copy to local result paths LfsPathInfo lfsPath = new LfsPathInfo(fingraphConfig, targetDate); CopyToLocalFile copier = new CopyToLocalFile(); copier.dirToFile(outputPath.toString(), lfsPath.getPageview()); return status; } public Job createJob(Configuration conf, Path[] inputpaths, Path outputpath, int numreduce, FingraphConfig finconfig) throws IOException { conf.setBoolean("verbose", finconfig.getDebug().isDebug_show_verbose()); conf.setBoolean("counter", finconfig.getDebug().isDebug_show_counter()); Job job = new Job(conf); String jobName = "perform/pageview job"; job.setJobName(jobName); job.setJarByClass(PageviewStatistic.class); for (int i = 0; i < inputpaths.length; i++) { FileInputFormat.addInputPath(job, inputpaths[i]); } FileOutputFormat.setOutputPath(job, outputpath); job.setMapperClass(PageviewMapper.class); job.setCombinerClass(PageviewReducer.class); job.setReducerClass(PageviewReducer.class); job.setMapOutputKeyClass(Text.class); job.setMapOutputValueClass(LongWritable.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(LongWritable.class); job.setPartitionerClass(PageviewPartitioner.class); job.setNumReduceTasks(numreduce); return job; } static class PageviewMapper extends Mapper<LongWritable, Text, Text, LongWritable> { private boolean verbose = false; private boolean counter = false; private CommonLogParser commonparser = new CommonLogParser(); private Text out_key = new Text(); private LongWritable out_val = new LongWritable(1); protected void setup(Context context) throws IOException, InterruptedException { verbose = context.getConfiguration().getBoolean("verbose", false); counter = context.getConfiguration().getBoolean("counter", false); } @Override protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException { // logtype check LogParserType logtype = FormatUtil.getLogParserType(value.toString()); if (logtype.equals(LogParserType.CommonLog)) { // CommonLog : STARTSESS/PAGEVIEW/ENDSESS commonparser.parse(value); if (commonparser.hasError() == false) { /* * Let the STARTSESS signal considered to be called PAGEVIEW */ if (commonparser.getCmd().equals(ConstantVars.CMD_STARTSESS) || commonparser.getCmd().equals(ConstantVars.CMD_PAGEVIEW)) { out_key.set(commonparser.getAppkey()); context.write(out_key, out_val); } } else { if (verbose) System.err.println("Ignoring corrupt input: " + value); } if (counter) context.getCounter(commonparser.getErrorLevel()).increment(1); } else if (logtype.equals(LogParserType.ComponentLog)) { // ComponentLog : COMPONENT if (counter) context.getCounter(DataUsable.USELESS).increment(1); } else { if (verbose) System.err.println("Ignoring corrupt input: " + value); if (counter) context.getCounter(LogValidation.MALFORMED).increment(1); } } } static class PageviewReducer extends Reducer<Text, LongWritable, Text, LongWritable> { private Text out_key = new Text(); private LongWritable out_val = new LongWritable(0); @Override protected void reduce(Text key, Iterable<LongWritable> values, Context context) throws IOException, InterruptedException { long sum = 0; for (LongWritable cur_val : values) { sum += cur_val.get(); } out_key.set(key); out_val.set(sum); context.write(out_key, out_val); } } private static class PageviewPartitioner extends Partitioner<Text, LongWritable> { @Override public int getPartition(Text key, LongWritable value, int numPartitions) { return Math.abs(key.hashCode() * 127) % numPartitions; } } public Job createHourJob(Configuration conf, Path[] inputpaths, Path outputpath, int numreduce, FingraphConfig finconfig, TargetDate targetdate) throws IOException { conf.setBoolean("verbose", finconfig.getDebug().isDebug_show_verbose()); conf.setBoolean("counter", finconfig.getDebug().isDebug_show_counter()); conf.set("hour", targetdate.getHour()); Job job = new Job(conf); String jobName = "perform/pageview hour job"; job.setJobName(jobName); job.setJarByClass(PageviewStatistic.class); for (int i = 0; i < inputpaths.length; i++) { FileInputFormat.addInputPath(job, inputpaths[i]); } FileOutputFormat.setOutputPath(job, outputpath); job.setMapperClass(PageviewHourMapper.class); job.setCombinerClass(PageviewHourReducer.class); job.setReducerClass(PageviewHourReducer.class); job.setMapOutputKeyClass(Text.class); job.setMapOutputValueClass(LongWritable.class); job.setOutputKeyClass(Text.class); job.setOutputValueClass(LongWritable.class); job.setPartitionerClass(PageviewHourPartitioner.class); job.setNumReduceTasks(numreduce); return job; } static class PageviewHourMapper extends Mapper<LongWritable, Text, Text, LongWritable> { private boolean verbose = false; private boolean counter = false; private String target_hour = ""; private int LTIME_LENGTH = ConstantVars.LOG_DATE_FORMAT.length(); private int HOUR_INDEX = 8; private int HOUR_LENGTH = 2; private CommonLogParser commonparser = new CommonLogParser(); private ConvertTimeZone timeZone = new ConvertTimeZone(); private Text out_key = new Text(); private LongWritable out_val = new LongWritable(1); protected void setup(Context context) throws IOException, InterruptedException { verbose = context.getConfiguration().getBoolean("verbose", false); counter = context.getConfiguration().getBoolean("counter", false); target_hour = context.getConfiguration().get("hour"); } @Override protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException { // logtype check LogParserType logtype = FormatUtil.getLogParserType(value.toString()); if (logtype.equals(LogParserType.CommonLog)) { // CommonLog : STARTSESS/PAGEVIEW/ENDSESS commonparser.parse(value); if (commonparser.hasError() == false) { /* * Let the STARTSESS signal considered to be called PAGEVIEW */ if (commonparser.getCmd().equals(ConstantVars.CMD_STARTSESS) || commonparser.getCmd().equals(ConstantVars.CMD_PAGEVIEW)) { // hour : hour from converted utctime to server operation time boolean rise_error = false; String utime2ltime = ""; String utime2ltime_hour = ""; try { utime2ltime = timeZone.convertUtcToLocal(commonparser.getUtctime()); } catch (Exception e) { rise_error = true; } if (utime2ltime.length() == LTIME_LENGTH) { utime2ltime_hour = utime2ltime.substring(HOUR_INDEX, HOUR_INDEX + HOUR_LENGTH); } else { rise_error = true; } if (rise_error == false && utime2ltime_hour.equals(target_hour)) { out_key.set(commonparser.getAppkey()); context.write(out_key, out_val); } } } else { if (verbose) System.err.println("Ignoring corrupt input: " + value); } if (counter) context.getCounter(commonparser.getErrorLevel()).increment(1); } else if (logtype.equals(LogParserType.ComponentLog)) { // ComponentLog : COMPONENT if (counter) context.getCounter(DataUsable.USELESS).increment(1); } else { if (verbose) System.err.println("Ignoring corrupt input: " + value); if (counter) context.getCounter(LogValidation.MALFORMED).increment(1); } } } static class PageviewHourReducer extends Reducer<Text, LongWritable, Text, LongWritable> { private Text out_key = new Text(); private LongWritable out_val = new LongWritable(0); @Override protected void reduce(Text key, Iterable<LongWritable> values, Context context) throws IOException, InterruptedException { long sum = 0; for (LongWritable cur_val : values) { sum += cur_val.get(); } out_key.set(key); out_val.set(sum); context.write(out_key, out_val); } } private static class PageviewHourPartitioner extends Partitioner<Text, LongWritable> { @Override public int getPartition(Text key, LongWritable value, int numPartitions) { return Math.abs(key.hashCode() * 127) % numPartitions; } } /** * * @param args */ public static void main(String[] args) { long start_time = 0, end_time = 0; int exitCode = 0; start_time = System.currentTimeMillis(); WorkLogger.log(PageviewStatistic.class.getSimpleName() + " : Start mapreduce job"); try { exitCode = ToolRunner.run(new PageviewStatistic(), args); WorkLogger.log(PageviewStatistic.class.getSimpleName() + " : End mapreduce job"); } catch (Exception e) { ErrorLogger.log(PageviewStatistic.class.getSimpleName() + " : Error : " + e.getMessage()); WorkLogger.log(PageviewStatistic.class.getSimpleName() + " : Failed mapreduce job"); } end_time = System.currentTimeMillis(); try { FingraphConfig config = new FingraphConfig(); if (config.getDebug().isDebug_show_spenttime()) WorkLogger .log("DEBUG - run times : " + FormatUtil.getDurationFromMillitimes(end_time - start_time)); } catch (IOException ignore) { } System.exit(exitCode); } }