/**
* 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.classic.util;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.core.spi.ContextAware;
import ch.qos.logback.core.spi.LifeCycle;
import ch.qos.logback.core.status.OnConsoleStatusListener;
import ch.qos.logback.core.status.StatusListener;
import ch.qos.logback.core.util.OptionHelper;
public class StatusListenerConfigHelper {
static void installIfAsked(LoggerContext loggerContext) {
String slClass = OptionHelper.getSystemProperty(
ContextInitializer.STATUS_LISTENER_CLASS);
if (!OptionHelper.isEmpty(slClass)) {
addStatusListener(loggerContext, slClass);
}
}
private static void addStatusListener(LoggerContext loggerContext,
String listenerClass) {
StatusListener listener = null;
if (ContextInitializer.SYSOUT.equalsIgnoreCase(listenerClass)) {
listener = new OnConsoleStatusListener();
} else {
listener = createListenerPerClassName(loggerContext, listenerClass);
}
initAndAddListener(loggerContext, listener);
}
private static void initAndAddListener(LoggerContext loggerContext, StatusListener listener) {
if (listener != null) {
if(listener instanceof ContextAware) // LOGBACK-767
((ContextAware) listener).setContext(loggerContext);
if(listener instanceof LifeCycle) // LOGBACK-767
((LifeCycle) listener).start();
loggerContext.getStatusManager().add(listener);
}
}
private static StatusListener createListenerPerClassName(LoggerContext loggerContext, String listenerClass) {
try {
return (StatusListener) OptionHelper.instantiateByClassName(
listenerClass, StatusListener.class, loggerContext);
} catch (Exception e) {
// printing on the console is the best we can do
e.printStackTrace();
return null;
}
}
}