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comparison src/goodjava/logger/Layouts.java @ 1448:6fc083e1d08c

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start logger
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 23 Feb 2020 18:14:32 -0700
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1447:851b9a48cc44 1448:6fc083e1d08c
1 package goodjava.logger;
2
3 import java.io.StringWriter;
4 import java.io.PrintWriter;
5
6
7 public final class Layouts {
8 private Layouts() {} // never
9
10 public static final Layout MESSAGE = new Layout() {
11 public String format(LoggingEvent event) {
12 return event.message;
13 }
14 };
15
16 public static final Layout LOGGER = new Layout() {
17 public String format(LoggingEvent event) {
18 return event.logger.name;
19 }
20 };
21
22 public static final Layout LEVEL = new Layout() {
23 public String format(LoggingEvent event) {
24 return Level.toString(event.level);
25 }
26 };
27
28 public static final Layout LEVEL_PADDED = new Layout() {
29 public String format(LoggingEvent event) {
30 return Level.toPaddedString(event.level);
31 }
32 };
33
34 public static final Layout THROWABLE = new Layout() {
35 public String format(LoggingEvent event) {
36 if( event.throwable == null )
37 return "";
38 StringWriter stringWriter = new StringWriter();
39 PrintWriter printWriter = new PrintWriter(stringWriter);
40 event.throwable.printStackTrace(printWriter);
41 return stringWriter.toString();
42 }
43 };
44
45 public static final Layout THREAD = new Layout() {
46 public String format(LoggingEvent event) {
47 return Thread.currentThread().getName();
48 }
49 };
50
51 }