View Javadoc
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.log4j.core.jackson;
18  
19  import java.io.IOException;
20  import java.util.List;
21  
22  import org.apache.logging.log4j.spi.MutableThreadContextStack;
23  
24  import com.fasterxml.jackson.core.JsonParser;
25  import com.fasterxml.jackson.core.JsonProcessingException;
26  import com.fasterxml.jackson.core.type.TypeReference;
27  import com.fasterxml.jackson.databind.DeserializationContext;
28  import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
29  
30  /**
31   * <p>
32   * <em>Consider this class private.</em>
33   * </p>
34   */
35  final class MutableThreadContextStackDeserializer extends StdDeserializer<MutableThreadContextStack> {
36  
37      private static final long serialVersionUID = 1L;
38  
39      MutableThreadContextStackDeserializer() {
40          super(MutableThreadContextStack.class);
41      }
42  
43      @Override
44      public MutableThreadContextStack deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException,
45              JsonProcessingException {
46          final List<String> list = jp.readValueAs(new TypeReference<List<String>>() {
47              // empty
48          });
49          return new MutableThreadContextStack(list);
50      }
51  }