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package mobvista.prd.datasource.source.mapreduce;
import mobvista.dmp.util.MRUtils;
import mobvista.prd.datasource.table.MergeAppIDMR;
import mobvista.prd.datasource.tag.mapreduce.reduce.CountReducer;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.compress.GzipCodec;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import java.io.IOException;
/**
* Created by Administrator on 2017/5/16 0016.
* desc : 计算dsp与m系统分国家3天的数据
*/
public class CountDspMCountryMR {
public static void main(String[] args) throws InterruptedException, IOException, ClassNotFoundException {
Configuration conf = new Configuration();
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
Job job = Job.getInstance(conf, "dsp join M");
job.setJarByClass(MergeAppIDMR.class);
FileOutputFormat.setCompressOutput(job, true);
FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);
job.setMapperClass(CountDspMCountryMapper.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(LongWritable.class);
job.setReducerClass(CountReducer.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(LongWritable.class);
FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
FileInputFormat.addInputPath(job, new Path(otherArgs[1]));
FileOutputFormat.setOutputPath(job, new Path(otherArgs[2]));
System.exit(job.waitForCompletion(true) ? 0 : 1);
}
public static class CountDspMCountryMapper extends Mapper<LongWritable, Text, Text, LongWritable> {
Text outKey = new Text();
LongWritable outValue = new LongWritable(1);
public void map (LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String line = value.toString();
String[] fields = MRUtils.SPLITTER.split(line,-1);
String inputFile = context.getConfiguration().get("map.input.file");
if (inputFile.contains("merge_dsp_3_day")) {
outKey.set(MRUtils.JOINER.join(fields[2], fields[3]));//来源，国家
context.write(outKey, outValue);
} else if (inputFile.contains("etl_adn_sdk_req_3_day")) {
outKey.set(MRUtils.JOINER.join("M系统", fields[2]));//来源，国家
context.write(outKey, outValue);
}
}
}
}