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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.Logger;
23  import org.apache.logging.log4j.message.MessageFactory;
24  import org.apache.logging.log4j.spi.LoggerContext;
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 Logger 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 Logger 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  }