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package mobvista.dmp.datasource.ga.mapreduce;
import com.google.common.base.Joiner;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
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.NullWritable;
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.Reducer;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.JavaType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* author: houying
* date : 16-10-24
* desc :
*/
public class GaRevenueMR extends Configured implements Tool {
private static final Pattern splitPtn = Pattern.compile("\t");
private static final Joiner joiner = Joiner.on("\t").useForNull("");
private static Set<String> illegalValueSet = Sets.newHashSet("0", "0.0", "", "NULL");
private static ObjectMapper objectMapper = new ObjectMapper();
static class RevenueRecord {
private double revenue;
private String date;
public RevenueRecord() {
}
public RevenueRecord(double revenue, String date) {
this.revenue = revenue;
this.date = date;
}
public double getRevenue() {
return revenue;
}
public void setRevenue(double revenue) {
this.revenue = revenue;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
}
public static class GaRevenueMapper extends Mapper<LongWritable, Text, Text, Text> {
private static final Logger logger = LoggerFactory.getLogger(GaRevenueMapper.class);
private Pattern datePtn = Pattern.compile("/(\\d{4}/\\d{2}/\\d{2})");
private Text outKey = new Text();
private Text outValue = new Text();
@Override
protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String[] array = splitPtn.split(value.toString());
String path = ((FileSplit)context.getInputSplit()).getPath().toString();
outKey.set(joiner.join(array[0], array[1]));
if (array.length == 31) { //daily
String revenueWeek = array[27];
String revenueMonth = array[28];
if (!illegalValueSet.contains(revenueWeek)
|| !illegalValueSet.contains(revenueMonth)) {
String date = getDate(path);
if (date == null) {
return;
}
outValue.set(joiner.join(date, revenueWeek, revenueMonth));
context.write(outKey, outValue);
}
} else if (array.length == 4) {
outValue.set(joiner.join(array[2], array[3]));
context.write(outKey, outValue);
}
}
private String getDate(String path) {
Matcher matcher = datePtn.matcher(path);
if (matcher.find()) {
return matcher.group(1).replace("/", "-");
} else {
logger.error("can not find date in path: {}", path);
return null;
}
}
}
public static class GaRevenueReducer extends Reducer<Text, Text, Text, NullWritable> {
private JavaType javaType = objectMapper.getTypeFactory().constructCollectionType(List.class, RevenueRecord.class);
private Text outKey = new Text();
@Override
protected void reduce(Text key, Iterable<Text> values, Context context) throws IOException, InterruptedException {
String[] idAndType = splitPtn.split(key.toString());
List<RevenueRecord> weekList = Lists.newArrayList();
List<RevenueRecord> monthList = Lists.newArrayList();
String oldWeekList = null;
String oldMonthList = null;
for (Text value: values) {
String[] array = splitPtn.split(value.toString());
if (array.length == 2) { //old revenue
oldWeekList = array[0];
oldMonthList = array[1];
} else if (array.length == 3) {
String date = array[0];
if (!illegalValueSet.contains(array[1])) {
weekList.add(new RevenueRecord(Double.valueOf(array[1]), date));
}
if (!illegalValueSet.contains(array[2])) {
monthList.add(new RevenueRecord(Double.valueOf(array[2]), date));
}
}
}
outKey.set(joiner.join(
idAndType[0],
idAndType[1],
listToJson(mergeRevenueList(oldWeekList, weekList)),
listToJson(mergeRevenueList(oldMonthList, monthList))
));
context.write(outKey, NullWritable.get());
}
private Collection<RevenueRecord> mergeRevenueList(String oldWeekList, final List<RevenueRecord> list) throws IOException {
List<RevenueRecord> revenueRecords = oldWeekList == null ? Collections.<RevenueRecord>emptyList():
(List<RevenueRecord>) objectMapper.readValue(oldWeekList, javaType);
Map<String, RevenueRecord> map = Maps.newHashMap();
for (RevenueRecord revenueRecord: revenueRecords) {
map.put(revenueRecord.getDate(), revenueRecord);
}
for (RevenueRecord record: list) {
map.put(record.getDate(), record);
}
return map.values();
}
private String listToJson(Collection<RevenueRecord> list) throws IOException {
return objectMapper.writeValueAsString(list);
}
}
@Override
public int run(String[] args) throws Exception {
Configuration conf = getConf();
conf.set("mapreduce.task.io.sort.mb", "500");
conf.set("mapreduce.reduce.java.opts", "-Xmx1536m");
conf.set("mapreduce.reduce.memory.mb", "2048");
conf.set("mapreduce.reduce.shuffle.parallelcopies", "50");
Job job = Job.getInstance(conf, "ga revenue");
job.setJarByClass(GaRevenueMR.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileInputFormat.addInputPath(job, new Path(args[1]));
Path outputPath = new Path(args[2]);
FileSystem fileSystem = outputPath.getFileSystem(conf);
if (fileSystem.exists(outputPath)) {
fileSystem.delete(outputPath, true);
}
FileOutputFormat.setOutputPath(job, outputPath);
FileOutputFormat.setCompressOutput(job, true);
FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);
job.setInputFormatClass(TextInputFormat.class);
job.setMapperClass(GaRevenueMapper.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(Text.class);
job.setReducerClass(GaRevenueReducer.class);
job.setOutputFormatClass(TextOutputFormat.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(NullWritable.class);
return job.waitForCompletion(true) ? 0 : 1;
}
public static void main(String[] args) throws Exception {
System.exit(ToolRunner.run(new Configuration(), new GaRevenueMR(), args));
}
}