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Log4J Logging Adapter for Tentackle
/*
* Tentackle - https://tentackle.org
*
* 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.tentackle.log.log4j;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.MDC;
import org.tentackle.common.Service;
import org.tentackle.common.ServiceFactory;
import org.tentackle.log.AbstractMappedDiagnosticContext;
interface Log4JMappedDiagnosticContextHolder {
Log4JMappedDiagnosticContext INSTANCE = ServiceFactory.createService(
Log4JMappedDiagnosticContext.class, Log4JMappedDiagnosticContext.class);
}
/**
* The Log4J mdc implementation.
*
* @author harald
*/
@Service(Log4JMappedDiagnosticContext.class) // defaults to self
public class Log4JMappedDiagnosticContext extends AbstractMappedDiagnosticContext {
/**
* The singleton.
*
* @return the singleton
*/
public static Log4JMappedDiagnosticContext getInstance() {
return Log4JMappedDiagnosticContextHolder.INSTANCE;
}
@Override
public void put(String key, String val) {
MDC.put(key, val);
}
@Override
public String get(String key) {
return (String) MDC.get(key);
}
@Override
public void remove(String key) {
MDC.remove(key);
}
@Override
public void clear() {
MDC.clear();
}
@Override
public Map getContext() {
@SuppressWarnings("unchecked")
Map map = MDC.getContext();
if (map == null) {
map = new HashMap<>();
}
return map;
}
}