org.slf4j.jul.JDK14LoggerFactory Maven / Gradle / Ivy
/**
* Copyright (c) 2004-2011 QOS.ch
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
package org.slf4j.jul;
import org.slf4j.Logger;
import org.slf4j.ILoggerFactory;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* JDK14LoggerFactory is an implementation of {@link ILoggerFactory} returning
* the appropriately named {@link JDK14LoggerAdapter} instance.
*
* @author Ceki Gülcü
*/
public class JDK14LoggerFactory implements ILoggerFactory {
// key: name (String), value: a JDK14LoggerAdapter;
ConcurrentMap loggerMap;
/**
* the root logger is called "" in JUL
*/
private static String JUL_ROOT_LOGGER_NAME = "";
public JDK14LoggerFactory() {
loggerMap = new ConcurrentHashMap<>();
// ensure jul initialization. see SLF4J-359
// note that call to java.util.logging.LogManager.getLogManager() fails on the Google App Engine platform. See
// SLF4J-363
java.util.logging.Logger.getLogger("");
}
/*
* (non-Javadoc)
*
* @see org.slf4j.ILoggerFactory#getLogger(java.lang.String)
*/
public Logger getLogger(String name) {
// the root logger is called "" in JUL
if (name.equalsIgnoreCase(Logger.ROOT_LOGGER_NAME)) {
name = JUL_ROOT_LOGGER_NAME;
}
Logger slf4jLogger = loggerMap.get(name);
if (slf4jLogger != null)
return slf4jLogger;
else {
java.util.logging.Logger julLogger = java.util.logging.Logger.getLogger(name);
Logger newInstance = new JDK14LoggerAdapter(julLogger);
Logger oldInstance = loggerMap.putIfAbsent(name, newInstance);
return oldInstance == null ? newInstance : oldInstance;
}
}
}