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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 java.io.File;
20  
21  import org.apache.logging.log4j.core.config.plugins.Plugin;
22  
23  /**
24   *
25   */
26  @Plugin(name = "JSONConfigurationFactory", category = "ConfigurationFactory")
27  @Order(6)
28  public class JSONConfigurationFactory extends ConfigurationFactory {
29  
30      /**
31       * The file extensions supported by this factory.
32       */
33      public static final String[] SUFFIXES = new String[] {".json", ".jsn"};
34  
35      private static String[] dependencies = new String[] {
36              "com.fasterxml.jackson.databind.ObjectMapper",
37              "com.fasterxml.jackson.databind.JsonNode",
38              "com.fasterxml.jackson.core.JsonParser"
39      };
40  
41      private final File configFile = null;
42  
43      private boolean isActive;
44  
45      public JSONConfigurationFactory() {
46          try {
47              for (final String item : dependencies) {
48                  Class.forName(item);
49              }
50          } catch (final ClassNotFoundException ex) {
51              LOGGER.debug("Missing dependencies for Json support");
52              isActive = false;
53              return;
54          }
55          isActive = true;
56      }
57  
58      @Override
59      protected boolean isActive() {
60          return isActive;
61      }
62  
63      @Override
64      public Configuration getConfiguration(final ConfigurationSource source) {
65          if (!isActive) {
66              return null;
67          }
68          return new JSONConfiguration(source);
69      }
70  
71      @Override
72      public String[] getSupportedTypes() {
73          return SUFFIXES;
74      }
75  }