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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.slf4j.helpers;
18  
19  import java.util.Map;
20  
21  import org.apache.logging.log4j.ThreadContext;
22  import org.slf4j.spi.MDCAdapter;
23  
24  /**
25   *
26   */
27  public class Log4jMDCAdapter implements MDCAdapter {
28  
29      @Override
30      public void put(final String key, final String val) {
31          ThreadContext.put(key, val);
32      }
33  
34      @Override
35      public String get(final String key) {
36          return ThreadContext.get(key);
37      }
38  
39      @Override
40      public void remove(final String key) {
41          ThreadContext.remove(key);
42      }
43  
44      @Override
45      public void clear() {
46          ThreadContext.clear();
47      }
48  
49      @Override
50      public Map<String, String> getCopyOfContextMap() {
51          return ThreadContext.getContext();
52      }
53  
54      @Override
55      @SuppressWarnings("unchecked") // nothing we can do about this, restricted by SLF4J API
56      public void setContextMap(@SuppressWarnings("rawtypes") final Map map) {
57          ThreadContext.clear();
58          for (final Map.Entry<String, String> entry : ((Map<String, String>) map).entrySet()) {
59              ThreadContext.put(entry.getKey(), entry.getValue());
60          }
61      }
62  }