Mercurial Hosting > luan
annotate src/goodjava/logger/DailyRollingFileAppender.java @ 1752:b4fa42c1e999
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author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 25 Jan 2023 12:22:09 -0700 |
parents | 8a717f0b7f45 |
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1 package goodjava.logger; |
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2 |
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3 import java.io.FileWriter; |
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4 import java.io.File; |
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5 import java.io.IOException; |
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6 import java.text.DateFormat; |
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7 import java.util.Date; |
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8 |
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9 |
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10 public final class DailyRollingFileAppender extends WriterAppender { |
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11 private final DateFormat format; |
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12 private String fileName; |
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13 public long deleteAfter = 0; |
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14 |
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15 public DailyRollingFileAppender(Layout layout,DateFormat format) { |
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16 super(layout,null); |
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17 this.format = format; |
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18 } |
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19 |
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20 public synchronized void append(LoggingEvent event) { |
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21 String newFileName = format.format(new Date()); |
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22 if( !newFileName.equals(fileName) ) { |
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23 fileName = newFileName; |
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24 if( writer != null ) |
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25 close(); |
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26 sweep(); |
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27 try { |
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28 writer = new FileWriter(fileName,true); |
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29 } catch(IOException e) { |
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30 throw new RuntimeException(e); |
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31 } |
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32 } |
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33 super.append(event); |
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34 } |
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35 |
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36 private void sweep() { |
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37 if( deleteAfter <= 0 ) |
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38 return; |
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39 long expired = System.currentTimeMillis() - deleteAfter; |
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40 File dir = new File(fileName).getParentFile(); |
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41 for( File file : dir.listFiles() ) { |
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42 if( file.lastModified() < expired ) |
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43 file.delete(); |
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44 } |
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45 } |
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46 } |