001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache license, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the license for the specific language governing permissions and
015 * limitations under the license.
016 */
017
018package org.apache.logging.log4j.jul;
019
020import java.util.logging.Logger;
021
022import org.apache.logging.log4j.message.MessageFactory;
023import org.apache.logging.log4j.message.MessageFormatMessageFactory;
024import org.apache.logging.log4j.spi.LoggerContext;
025
026/**
027 * {@link Logger} registry implementation that uses log4j-core.
028 *
029 * @since 2.1
030 */
031public class CoreLoggerAdapter extends AbstractLoggerAdapter {
032
033    private static final MessageFactory MESSAGE_FACTORY = new MessageFormatMessageFactory();
034
035    @Override
036    protected Logger newLogger(final String name, final LoggerContext context) {
037        final org.apache.logging.log4j.spi.ExtendedLogger original = context.getLogger(name, MESSAGE_FACTORY);
038        if (original instanceof org.apache.logging.log4j.core.Logger) {
039            return new CoreLogger((org.apache.logging.log4j.core.Logger) original);
040        }
041        return new ApiLogger(original); // LOG4J2-1618 during shutdown, a SimpleLogger may be returned
042    }
043}