package mapreduce;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.fs.Path;

import org.apache.hadoop.io.IntWritable;

import org.apache.hadoop.io.Text;

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.TextInputFormat;

import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat; 

public class CleanData {

    public static class Map extends Mapper<Object , Text , Text , IntWritable>{

        private static Text newKey=new Text();

        private static String chage(String data) {

            char[] str = data.toCharArray();

            String[] time = new String[7];

            int j = 0;

            int k = 0;

            for(int i=0;i<str.length;i++) {

                if(str[i]=='/'||str[i]==':'||str[i]==32) {

                    time[k] = data.substring(j,i);

                    j = i+1;

                    k++;

                }

            }

            time[k] = data.substring(j, data.length());

             switch(time[1]) { case "Jan":time[1]="01";break; case

              "Feb":time[1]="02";break; case "Mar":time[1]="03";break; case

              "Apr":time[1]="04";break; case "May":time[1]="05";break; case

              "Jun":time[1]="06";break; case "Jul":time[1]="07";break; case

              "Aug":time[1]="08";break; case "Sep":time[1]="09";break; case

              "Oct":time[1]="10";break; case "Nov":time[1]="11";break; case

              "Dec":time[1]="12";break; }

            data = time[2]+"-"+time[1]+"-"+time[0]+" "+time[3]+":"+time[4]+":"+time[5];

            return data;

        }

        public void map(Object key,Text value,Context context) throws IOException, InterruptedException{

            String line=value.toString();

            System.out.println(line);

            String arr[]=line.split(","); 

            String ip = arr[0];

            String date = arr[1];

            String day = arr[2];

            String traffic = arr[3];

            String type = arr[4];

            String id = arr[5];

            date = chage(date);

            traffic = traffic.substring(0, traffic.length()-1);

            newKey.set(ip+'\t'+date+'\t'+day+'\t'+traffic+'\t'+type);

            //newKey.set(ip+','+date+','+day+','+traffic+','+type);

            int click=Integer.parseInt(id);

            context.write(newKey, new IntWritable(click));

        }

    }

    public static class Reduce extends Reducer<Text, IntWritable, Text, IntWritable>{

        public void reduce(Text key,Iterable<IntWritable> values,Context context) throws IOException, InterruptedException{

            for(IntWritable val : values){

                context.write(key, val);

            }

        }

    }

    public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException{

        Configuration conf=new Configuration();

        System.out.println("start");

        Job job =new Job(conf,"cleanData");

        job.setJarByClass(CleanData.class);

        job.setMapperClass(Map.class);

        job.setReducerClass(Reduce.class);

        job.setOutputKeyClass(Text.class);

        job.setOutputValueClass(IntWritable.class);

        job.setInputFormatClass(TextInputFormat.class);

        job.setOutputFormatClass(TextOutputFormat.class);

        Path in=new Path("hdfs://192.168.137.67:9000/mymapreducel/in/result.txt");

        Path out=new Path("hdfs://192.168.137.67:9000/mymapreducelShiYan/out1");

        FileInputFormat.addInputPath(job,in);

        FileOutputFormat.setOutputPath(job,out);

        System.exit(job.waitForCompletion(true) ? 0 : 1);

    }

}