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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.log4j.core.config;
18  
19  import org.apache.logging.log4j.core.config.plugins.Plugin;
20  import java.io.File;
21  
22  /**
23   *
24   */
25  @Plugin(name = "JSONConfigurationFactory", category = "ConfigurationFactory")
26  @Order(6)
27  public class JSONConfigurationFactory extends ConfigurationFactory {
28  
29      /**
30       * The file extensions supported by this factory.
31       */
32      public static final String[] SUFFIXES = new String[] {".json", ".jsn"};
33  
34      private static String[] dependencies = new String[] {
35          "org.codehaus.jackson.JsonNode",
36          "org.codehaus.jackson.map.ObjectMapper"
37      };
38  
39      private final File configFile = null;
40  
41      private boolean isActive;
42  
43      public JSONConfigurationFactory() {
44          try {
45              for (final String item : dependencies) {
46                  Class.forName(item);
47              }
48          } catch (final ClassNotFoundException ex) {
49              LOGGER.debug("Missing dependencies for Json support");
50              isActive = false;
51              return;
52          }
53          isActive = true;
54      }
55  
56      @Override
57      protected boolean isActive() {
58          return isActive;
59      }
60  
61      @Override
62      public Configuration getConfiguration(final ConfigurationSource source) {
63          if (!isActive) {
64              return null;
65          }
66          return new JSONConfiguration(source);
67      }
68  
69      @Override
70      public String[] getSupportedTypes() {
71          return SUFFIXES;
72      }
73  }