/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2013, QOS.ch. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation.
*/
package ch.qos.logback.core.rolling;
import java.io.File;
import ch.qos.logback.core.util.FileSize;
import ch.qos.logback.core.util.InvocationGate;
/**
* SizeBasedTriggeringPolicy looks at size of the file being currently written
* to. If it grows bigger than the specified size, the FileAppender using the
* SizeBasedTriggeringPolicy rolls the file and creates a new one.
*
* For more information about this policy, please refer to the online manual at
* http://logback.qos.ch/manual/appenders.html#SizeBasedTriggeringPolicy
*
* @author Ceki Gülcü
*
*/
public class SizeBasedTriggeringPolicy<E> extends TriggeringPolicyBase<E> {
public static final String SEE_SIZE_FORMAT = "http://logback.qos.ch/codes.html#sbtp_size_format";
/**
* The default maximum file size.
*/
public static final long DEFAULT_MAX_FILE_SIZE = 10 * 1024 * 1024; // 10 MB
String maxFileSizeAsString = Long.toString(DEFAULT_MAX_FILE_SIZE);
FileSize maxFileSize;
public SizeBasedTriggeringPolicy() {
}
public SizeBasedTriggeringPolicy(final String maxFileSize) {
setMaxFileSize(maxFileSize);
}
private InvocationGate invocationGate = new InvocationGate();
public boolean isTriggeringEvent(final File activeFile, final E event) {
if(invocationGate.skipFurtherWork())
return false;
long now = System.currentTimeMillis();
invocationGate.updateMaskIfNecessary(now);
return (activeFile.length() >= maxFileSize.getSize());
}
public String getMaxFileSize() {
return maxFileSizeAsString;
}
public void setMaxFileSize(String maxFileSize) {
this.maxFileSizeAsString = maxFileSize;
this.maxFileSize = FileSize.valueOf(maxFileSize);
}
long toFileSize(String value) {
if (value == null)
return DEFAULT_MAX_FILE_SIZE;
String s = value.trim().toUpperCase();
long multiplier = 1;
int index;
if ((index = s.indexOf("KB")) != -1) {
multiplier = 1024;
s = s.substring(0, index);
} else if ((index = s.indexOf("MB")) != -1) {
multiplier = 1024 * 1024;
s = s.substring(0, index);
} else if ((index = s.indexOf("GB")) != -1) {
multiplier = 1024 * 1024 * 1024;
s = s.substring(0, index);
}
if (s != null) {
try {
return Long.valueOf(s).longValue() * multiplier;
} catch (NumberFormatException e) {
addError("[" + s + "] is not in proper int format. Please refer to "
+ SEE_SIZE_FORMAT);
addError("[" + value + "] not in expected format.", e);
}
}
return DEFAULT_MAX_FILE_SIZE;
}
}