/**
* Logback: the generic, reliable, fast and flexible logging framework.
*
* Copyright (C) 1999-2006, QOS.ch
*
* This library is free software, you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation.
*/
package ch.qos.logback.core.read;
import ch.qos.logback.core.AppenderBase;
import ch.qos.logback.core.helpers.CyclicBuffer;
/**
* CyclicBufferAppender stores events in a cyclic buffer of user-specified size. As the
* name suggests, if the size of the buffer is N, only the latest N events are available.
*
*
* @author Ceki Gulcu
*/
public class CyclicBufferAppender extends AppenderBase {
CyclicBuffer cb;
int maxSize = 512;
public void start() {
cb = new CyclicBuffer(maxSize);
super.start();
}
public void stop() {
cb = null;
super.stop();
}
@Override
protected void append(Object eventObject) {
if (!isStarted()) {
return;
}
cb.add(eventObject);
}
public int getLength() {
if (isStarted()) {
return cb.length();
} else {
return 0;
}
}
public Object get(int i) {
if (isStarted()) {
return cb.get(i);
} else {
return null;
}
}
/**
* Set the size of the cyclic buffer.
*/
public int getMaxSize() {
return maxSize;
}
public void setMaxSize(int maxSize) {
this.maxSize = maxSize;
}
}