/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package freemarker.log;
/**
* Don't use this class; it's only public to work around Google App Engine Java
* compliance issues. FreeMarker developers only: treat this class as package-visible.
*/
public class _Log4jOverSLF4JTester {
private static final String MDC_KEY = _Log4jOverSLF4JTester.class.getName();
/**
* Returns if Log4j-over-SLF4J is actually working. Sometimes the API classes are present, but there's no SLF4J
* implementation around.
*/
public static final boolean test() {
org.apache.log4j.MDC.put(MDC_KEY, "");
try {
return org.slf4j.MDC.get(MDC_KEY) != null;
} finally {
org.apache.log4j.MDC.remove(MDC_KEY);
}
}
}