/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements. See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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 org.apache.logging.slf4j;
  
  import org.apache.logging.log4j.message.MessageFactory;
  import org.apache.logging.log4j.spi.ExtendedLogger;
  import org.apache.logging.log4j.spi.LoggerContext;
  import org.apache.logging.log4j.spi.LoggerRegistry;
  import org.slf4j.LoggerFactory;
  
  public class SLF4JLoggerContext implements LoggerContext {
      private final LoggerRegistry<ExtendedLogger> loggerRegistry = new LoggerRegistry<>();
  
      @Override
      public Object getExternalContext() {
          return null;
      }
  
      @Override
      public ExtendedLogger getLogger(final String name) {
          if (!loggerRegistry.hasLogger(name)) {
              loggerRegistry.putIfAbsent(name, null, new SLF4JLogger(name, LoggerFactory.getLogger(name)));
          }
          return loggerRegistry.getLogger(name);
      }
  
      @Override
      public ExtendedLogger getLogger(final String name, final MessageFactory messageFactory) {
          if (!loggerRegistry.hasLogger(name, messageFactory)) {
              loggerRegistry.putIfAbsent(name, messageFactory,
                      new SLF4JLogger(name, messageFactory, LoggerFactory.getLogger(name)));
          }
          return loggerRegistry.getLogger(name, messageFactory);
      }
  
      @Override
      public boolean hasLogger(final String name) {
          return loggerRegistry.hasLogger(name);
      }
  
      @Override
      public boolean hasLogger(final String name, final MessageFactory messageFactory) {
          return loggerRegistry.hasLogger(name, messageFactory);
      }
  
      @Override
      public boolean hasLogger(final String name, final Class<? extends MessageFactory> messageFactoryClass) {
          return loggerRegistry.hasLogger(name, messageFactoryClass);
      }
  }