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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.rolling;
15  
16  import java.io.File;
17  
18  import ch.qos.logback.core.util.FileSize;
19  import ch.qos.logback.core.util.DefaultInvocationGate;
20  import ch.qos.logback.core.util.InvocationGate;
21  
22  /**
23   * SizeBasedTriggeringPolicy looks at size of the file being currently written
24   * to. If it grows bigger than the specified size, the FileAppender using the
25   * SizeBasedTriggeringPolicy rolls the file and creates a new one.
26   * 
27   * For more information about this policy, please refer to the online manual at
28   * http://logback.qos.ch/manual/appenders.html#SizeBasedTriggeringPolicy
29   * 
30   * @author Ceki Gülcü
31   * 
32   */
33  public class SizeBasedTriggeringPolicy<E> extends TriggeringPolicyBase<E> {
34  
35      public static final String SEE_SIZE_FORMAT = "http://logback.qos.ch/codes.html#sbtp_size_format";
36      /**
37       * The default maximum file size.
38       */
39      public static final long DEFAULT_MAX_FILE_SIZE = 10 * 1024 * 1024; // 10 MB
40  
41      FileSize maxFileSize = new FileSize(DEFAULT_MAX_FILE_SIZE);
42  
43      public SizeBasedTriggeringPolicy() {
44      }
45  
46      InvocationGate invocationGate = new DefaultInvocationGate();
47  
48      public boolean isTriggeringEvent(final File activeFile, final E event) {
49          long now = System.currentTimeMillis();
50          if (invocationGate.isTooSoon(now))
51              return false;
52  
53          return (activeFile.length() >= maxFileSize.getSize());
54      }
55  
56      public void setMaxFileSize(FileSize aMaxFileSize) {
57          this.maxFileSize = aMaxFileSize;
58      }
59  
60  }