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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 java.util.concurrent.ConcurrentHashMap;
    20  import java.util.concurrent.ConcurrentMap;
    21
    22  import org.apache.logging.log4j.message.MessageFactory;
    23  import org.apache.logging.log4j.spi.LoggerContext;
    24  import org.apache.logging.log4j.spi.ExtendedLogger;
    25  import org.slf4j.LoggerFactory;
    26
    27  /**
    28   *
    29   */
    30  public class SLF4JLoggerContext implements LoggerContext {
    31      private final ConcurrentMap<String, SLF4JLogger> loggers = new ConcurrentHashMap<String, SLF4JLogger>();
    32
    33      @Override
    34      public Object getExternalContext() {
    35          return null;
    36      }
    37
    38      @Override
    39      public ExtendedLogger getLogger(final String name) {
    40          if (!loggers.containsKey(name)) {
    41              loggers.putIfAbsent(name, new SLF4JLogger(name, LoggerFactory.getLogger(name)));
    42          }
    43          return loggers.get(name);
    44      }
    45
    46      @Override
    47      public ExtendedLogger getLogger(final String name, final MessageFactory messageFactory) {
    48          if (!loggers.containsKey(name)) {
    49              loggers.putIfAbsent(name, new SLF4JLogger(name, messageFactory, LoggerFactory.getLogger(name)));
    50          }
    51          return loggers.get(name);
    52      }
    53
    54      @Override
    55      public boolean hasLogger(final String name) {
    56          return loggers.containsKey(name);
    57      }
    58  }