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1 package org.jzonic.jlo.handler;
2
3 import org.jzonic.jlo.LogRecord;
4 import org.jzonic.jlo.VariableManager;
5 import org.jzonic.jlo.error.ErrorHandler;
6
7 import java.io.File  ;
8 import java.io.FileWriter ;
9 import java.text.SimpleDateFormat ;
10 import java.util.Date ;
11 import java.util.Map ;
12
13
16 public class DateFileHandler extends AbstractHandler {
17
18 private static final VariableManager vm = VariableManager.getInstance();
19 private String fileName;
20 private int maxSize;
21 private String dateFormat;
22
23 public DateFileHandler(String configName) {
24 super(configName);
25 fileName = null;
26 maxSize = -1;
27 dateFormat = "dd.MM.yyyy";
28 }
29
30 public void publish(String msg) {
31 String fn = prepareFileName();
32 if (fileName == null)
33 ErrorHandler.reportError("No filename specified");
34 try {
35 File file = new File (fn);
36 boolean append = true;
37 if ( file.exists() && maxSize != -1 ) {
38 long length = file.length();
39 if ( length > maxSize*1024 ) {
40 append = false;
41 }
42 }
43 FileWriter fw = new FileWriter (fn, append);
44 fw.write(msg + "\n");
45 fw.close();
46 } catch (Exception e) {
47 ErrorHandler.reportError("Exception while trying to write to file: " + fn,e);
48 }
49 }
50
51 public void publish(LogRecord lr) {
52 publish(lr.getMessage());
53 }
54
55 public void setParameter(Map parameters) {
56 if (parameters.containsKey("file"))
57 fileName = (String ) parameters.get("file");
58 if (parameters.containsKey("maxsize"))
59 maxSize = Integer.parseInt((String ) parameters.get("maxsize"));
60 if (parameters.containsKey("format"))
61 dateFormat = (String ) parameters.get("format");
62 }
63
64 public String prepareFileName() {
65 if (fileName != null) {
66 String fn = null;
67 String tmpName = fileName.toLowerCase();
68 int pos = tmpName.indexOf("${date}");
69 if (pos == -1) {
70 fn = fileName;
71 } else {
72 Date rightNow = new Date (System.currentTimeMillis());
73 String firstPart = fileName.substring(0, pos );
74 String secondPart = fileName.substring(pos + 7);
75 SimpleDateFormat formatter = new SimpleDateFormat (dateFormat);
76 String dateString = formatter.format(rightNow);
77 fn = firstPart + dateString + secondPart;
78 }
79 return vm.replaceVariables(fn, getConfigurationName());
80 } else {
81 return null;
82 }
83 }
84
85 } |
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