ch.qos.logback.core.spi.AppenderAttachableImpl Maven / Gradle / Ivy
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/**
* Logback: the reliable, generic, fast and flexible logging framework.
* Copyright (C) 1999-2015, 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.spi;
import java.util.Iterator;
import ch.qos.logback.core.Appender;
import ch.qos.logback.core.util.COWArrayList;
/**
* A ReentrantReadWriteLock based implementation of the
* {@link AppenderAttachable} interface.
*
* @author Ceki Gülcü
*/
public class AppenderAttachableImpl implements AppenderAttachable {
@SuppressWarnings("unchecked")
final private COWArrayList> appenderList = new COWArrayList>(new Appender[0]);
/**
* Attach an appender. If the appender is already in the list in won't be
* added again.
*/
public void addAppender(Appender newAppender) {
if (newAppender == null) {
throw new IllegalArgumentException("Null argument disallowed");
}
appenderList.addIfAbsent(newAppender);
}
/**
* Call the doAppend method on all attached appenders.
*/
public int appendLoopOnAppenders(E e) {
int size = 0;
final Appender[] appenderArray = appenderList.asTypedArray();
final int len = appenderArray.length;
for (int i = 0; i < len; i++) {
appenderArray[i].doAppend(e);
size++;
}
return size;
}
/**
* Get all attached appenders as an Enumeration. If there are no attached
* appenders null is returned.
*
* @return Iterator An iterator of attached appenders.
*/
public Iterator> iteratorForAppenders() {
return appenderList.iterator();
}
/**
* Look for an attached appender named as name.
*
* Return the appender with that name if in the list. Return null
* otherwise.
*/
public Appender getAppender(String name) {
if (name == null) {
return null;
}
for (Appender appender : appenderList) {
if (name.equals(appender.getName())) {
return appender;
}
}
return null;
}
/**
* Returns true if the specified appender is in the list of
* attached appenders, false otherwise.
*
* @since 1.2
*/
public boolean isAttached(Appender appender) {
if (appender == null) {
return false;
}
for (Appender a : appenderList) {
if (a == appender)
return true;
}
return false;
}
/**
* Remove and processPriorToRemoval all previously attached appenders.
*/
public void detachAndStopAllAppenders() {
for (Appender a : appenderList) {
a.stop();
}
appenderList.clear();
}
static final long START = System.currentTimeMillis();
/**
* Remove the appender passed as parameter form the list of attached
* appenders.
*/
public boolean detachAppender(Appender appender) {
if (appender == null) {
return false;
}
boolean result;
result = appenderList.remove(appender);
return result;
}
/**
* Remove the appender with the name passed as parameter form the list of
* appenders.
*/
public boolean detachAppender(String name) {
if (name == null) {
return false;
}
boolean removed = false;
for (Appender a : appenderList) {
if (name.equals((a).getName())) {
removed = appenderList.remove(a);
break;
}
}
return removed;
}
}