001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.core.rolling; 015 016import java.io.File; 017 018import ch.qos.logback.core.util.Duration; 019import ch.qos.logback.core.util.FileSize; 020import ch.qos.logback.core.util.DefaultInvocationGate; 021import ch.qos.logback.core.util.InvocationGate; 022import ch.qos.logback.core.util.SimpleInvocationGate; 023 024/** 025 * SizeBasedTriggeringPolicy looks at size of the file being currently written 026 * to. If it grows bigger than the specified size, the FileAppender using the 027 * SizeBasedTriggeringPolicy rolls the file and creates a new one. 028 * 029 * For more information about this policy, please refer to the online manual at 030 * http://logback.qos.ch/manual/appenders.html#SizeBasedTriggeringPolicy 031 * 032 * @author Ceki Gülcü 033 * 034 */ 035public class SizeBasedTriggeringPolicy<E> extends TriggeringPolicyBase<E> { 036 037 public static final String SEE_SIZE_FORMAT = "http://logback.qos.ch/codes.html#sbtp_size_format"; 038 /** 039 * The default maximum file size. 040 */ 041 public static final long DEFAULT_MAX_FILE_SIZE = 10 * 1024 * 1024; // 10 MB 042 043 FileSize maxFileSize = new FileSize(DEFAULT_MAX_FILE_SIZE); 044 InvocationGate invocationGate = new SimpleInvocationGate(); 045 Duration checkIncrement = null; 046 047 public SizeBasedTriggeringPolicy() { 048 } 049 050 public void start() { 051 if(checkIncrement != null) 052 invocationGate = new SimpleInvocationGate(checkIncrement); 053 super.start(); 054 } 055 056 057 public boolean isTriggeringEvent(final File activeFile, final E event) { 058 long now = System.currentTimeMillis(); 059 if (invocationGate.isTooSoon(now)) 060 return false; 061 062 return (activeFile.length() >= maxFileSize.getSize()); 063 } 064 065 public FileSize getMaxFileSize() { 066 return this.maxFileSize; 067 } 068 069 public void setMaxFileSize(FileSize aMaxFileSize) { 070 this.maxFileSize = aMaxFileSize; 071 } 072 073 public Duration getCheckIncrement() { 074 return checkIncrement; 075 } 076 077 public void setCheckIncrement(Duration checkIncrement) { 078 this.checkIncrement = checkIncrement; 079 } 080}