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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements. See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache license, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License. You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the license for the specific language governing permissions and
    15   * limitations under the license.
    16   */
    17  package org.apache.logging.slf4j;
    18
    19  import org.apache.logging.log4j.LogManager;
    20  import org.apache.logging.log4j.spi.AbstractLoggerAdapter;
    21  import org.apache.logging.log4j.spi.LoggerContext;
    22  import org.apache.logging.log4j.util.ReflectionUtil;
    23  import org.slf4j.ILoggerFactory;
    24  import org.slf4j.Logger;
    25
    26  /**
    27   * Log4j implementation of SLF4J ILoggerFactory interface.
    28   */
    29  public class Log4jLoggerFactory extends AbstractLoggerAdapter<Logger> implements ILoggerFactory {
    30
    31      private static final String FQCN = Log4jLoggerFactory.class.getName();
    32      private static final String PACKAGE = "org.slf4j";
    33
    34      @Override
    35      protected Logger newLogger(final String name, final LoggerContext context) {
    36          final String key = Logger.ROOT_LOGGER_NAME.equals(name) ? LogManager.ROOT_LOGGER_NAME : name;
    37          return new Log4jLogger(context.getLogger(key), name);
    38      }
    39
    40      @Override
    41      protected LoggerContext getContext() {
    42          final Class<?> anchor = ReflectionUtil.getCallerClass(FQCN, PACKAGE);
    43          return anchor == null ? LogManager.getContext() : getContext(ReflectionUtil.getCallerClass(anchor));
    44      }
    45
    46  }