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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.selector;
18  
19  import org.apache.logging.log4j.core.LoggerContext;
20  import org.apache.logging.log4j.core.impl.ContextAnchor;
21  
22  import java.net.URI;
23  import java.util.ArrayList;
24  import java.util.Collections;
25  import java.util.List;
26  
27  /**
28   * Returns either this Thread's context or the default LoggerContext.
29   */
30  public class BasicContextSelector implements ContextSelector {
31  
32      private static final LoggerContext CONTEXT = new LoggerContext("Default");
33  
34      public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext) {
35  
36          final LoggerContext ctx = ContextAnchor.THREAD_CONTEXT.get();
37          return ctx != null ? ctx : CONTEXT;
38      }
39  
40  
41      public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext,
42                                      URI configLocation) {
43  
44          final LoggerContext ctx = ContextAnchor.THREAD_CONTEXT.get();
45          return ctx != null ? ctx : CONTEXT;
46      }
47  
48      public LoggerContext locateContext(final String name, final String configLocation) {
49          return CONTEXT;
50      }
51  
52      public void removeContext(final LoggerContext context) {
53  
54      }
55  
56      public List<LoggerContext> getLoggerContexts() {
57          final List<LoggerContext> list = new ArrayList<LoggerContext>();
58          list.add(CONTEXT);
59          return Collections.unmodifiableList(list);
60      }
61  
62  }