Hadoop分析tomcat访问日志

今天照着《hadoop实战》写了个小例子，解析tomcat日志统计各个浏览器的访问次数

 

package com.ice.stat;

import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

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.output.FileOutputFormat;

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

        private static final IntWritable one = new IntWritable(1);
        private static Pattern pattern = Pattern.compile("([^,]*),([^,]*),([^,]*),([^,]*),([^,]*),([^,]*),([^,]*),([^,]*),(.*)");
        
        protected void map(Object key, Text value, 
                  Context context) throws IOException ,InterruptedException {
            
            String line = value.toString();
            System.out.println(line);
            Matcher m = pattern.matcher(line);
            if(m.matches()){
                String agent = m.group(9).toLowerCase();
                if(agent.contains("chrome")){
                    agent = "chrome";
                }else if(agent.contains("safari")){
                    agent = "safari";
                }else if(agent.contains("firefox")){
                    agent = "firefox";
                }else{
                    agent = "other";
                }
                Text t = new Text(agent);   
                context.write(t, one);
            }
        };
        
    }
    
    static class TomcatReducer extends Reducer<Text, IntWritable, Text, IntWritable>{
        protected void reduce(Text key, java.lang.Iterable<IntWritable> value, org.apache.hadoop.mapreduce.Reducer<Text,IntWritable,Text,IntWritable>.Context context) throws IOException ,InterruptedException {
            int count = 0;
            for(IntWritable v : value){
                count = count + v.get();
            }
            context.write(key, new IntWritable(count));
        };
    }
    
    public static void main(String[] args) throws Exception {
        if(args.length != 2){
            System.err.println("参数个数不对");
            System.exit(-1);
        }
        Job job = new Job();
        job.setJarByClass(TomcatLog.class);
        
        FileInputFormat.addInputPath(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));
        
        job.setMapperClass(TomcatMapper.class);
        job.setReducerClass(TomcatReducer.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);
        System.exit(job.waitForCompletion(true) ? 0 : 1);
        
    } 

}

 

日志样例：

172.16.2.12,-,-,[06/Sep/2011:10:03:13 +0800],GET /icestat/jpivot/toolbar/sort-asc-up.png HTTP/1.1,200,336,-,Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2)
172.16.2.12,-,-,[06/Sep/2011:09:48:17 +0800],GET /icestat/ HTTP/1.1,200,171,http://10.65.11.241:8080/icestat/,Mozilla/5.0 (Windows NT 6.1) AppleWebKit/534.24 (KHTML, like Gecko) Chrome/11.0.696.43 Safari/534.24

 

把日志放入hdfs

hadoop fs -put icestat_access_log.2011-09-06.txt icestat_access_log.2011-09-06.txt

 分析日志

hadoop jar tomcatLog.jar icestat_access_log.2011-09-06.txt output6

 查看输出

[root@xxx hadoop-0.20.2]# hadoop fs -cat output6/part-r-00000
11/09/06 00:18:54 WARN conf.Configuration: DEPRECATED: hadoop-site.xml found in the classpath. Usage of hadoop-site.xml is deprecated. Instead use core-site.xml, mapred-site.xml and hdfs-site.xml to override properties of core-default.xml, mapred-default.xml and hdfs-default.xml respectively
11/09/06 00:18:54 WARN fs.FileSystem: "xxx :9000" is a deprecated filesystem name. Use "hdfs://xxx :9000/" instead.
11/09/06 00:18:54 WARN fs.FileSystem: "xxx :9000" is a deprecated filesystem name. Use "hdfs://xxx :9000/" instead.
11/09/06 00:18:54 WARN fs.FileSystem: "xxx :9000" is a deprecated filesystem name. Use "hdfs://xxx :9000/" instead.
chrome  58
firefox 23
other   49
safari  5