Mercurial > hg > Members > anatofuz > Perl6_log_analyze_example

comparison java/src/main/java/com/google/anatofuz/LogAnalyzer.java @ 0:b42d5cbbd972

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author Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Wed, 18 Jul 2018 17:25:20 +0900
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1 package com.google.anatofuz;
2
3 import java.io.File;
4 import java.io.FileReader;
5 import java.io.BufferedReader;
6 import java.io.FileNotFoundException;
7 import java.io.IOException;
8 import java.util.*;
9 import java.util.regex.Pattern;
10 import java.util.regex.Matcher;
11
12 public class LogAnalyzer {
13
14 public static void main(String args[]) {
15
16 File file = new File("/var/log/system.log");
17
18 if (args.length != 0) {
19 if (args[0].equals("-f")) {
20 file = new File(args[1]);
21 }
22 }
23
24 try {
25 FileReader filereader = new FileReader(file);
26 BufferedReader bufferedReader = new BufferedReader(filereader);
27
28 String line;
29 Map<String,Integer> map = new HashMap<String,Integer>(0);
30 Pattern p = Pattern.compile("\\w+ \\d{0,2} (?:\\d{2}:?){3} (?:anatofuzMBP|anatofuz-15) ([\\w.]+)\\[\\d+\\]");
31
32
33 while ((line = bufferedReader.readLine()) != null) {
34 Matcher matcher = p.matcher(line);
35 if (matcher.find()) {
36 map.merge(matcher.group(1),1,Integer::sum);
37 }
38 }
39
40 int sum = 0;
41
42 for (String key :map.keySet()){
43 sum += map.get(key);
44 }
45
46 System.out.println(sum);
47
48
49 } catch (FileNotFoundException ex){
50 System.out.println(ex);
51 } catch (IOException ex){
52 System.out.println(ex);
53 }
54 }
55 }