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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.ExtendedLogger;
24  import org.apache.logging.log4j.spi.LoggerContext;
25  import org.apache.logging.log4j.spi.LoggerContextKey;
26  import org.slf4j.LoggerFactory;
27  
28  /**
29   *
30   */
31  public class SLF4JLoggerContext implements LoggerContext {
32      private final ConcurrentMap<String, SLF4JLogger> loggers = new ConcurrentHashMap<>();
33  
34      @Override
35      public Object getExternalContext() {
36          return null;
37      }
38  
39      @Override
40      public ExtendedLogger getLogger(final String name) {
41          if (!loggers.containsKey(name)) {
42              loggers.putIfAbsent(name, new SLF4JLogger(name, LoggerFactory.getLogger(name)));
43          }
44          return loggers.get(name);
45      }
46  
47      @Override
48      public ExtendedLogger getLogger(final String name, final MessageFactory messageFactory) {
49          if (!loggers.containsKey(name)) {
50              loggers.putIfAbsent(name, new SLF4JLogger(name, messageFactory, LoggerFactory.getLogger(name)));
51          }
52          return loggers.get(name);
53      }
54  
55      @Override
56      public boolean hasLogger(final String name) {
57          return loggers.containsKey(LoggerContextKey.create(name));
58      }
59  
60      @Override
61      public boolean hasLogger(String name, MessageFactory messageFactory) {
62          return loggers.containsKey(LoggerContextKey.create(name, messageFactory));
63      }
64  
65      @Override
66      public boolean hasLogger(String name, Class<? extends MessageFactory> messageFactoryClass) {
67          return loggers.containsKey(LoggerContextKey.create(name, messageFactoryClass));
68      }
69  }