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.async;
18
19 import java.net.URI;
20 import java.util.ArrayList;
21 import java.util.Collections;
22 import java.util.List;
23
24 import org.apache.logging.log4j.core.LoggerContext;
25 import org.apache.logging.log4j.core.selector.ContextSelector;
26
27 /**
28 * {@code ContextSelector} that returns the singleton {@code AsyncLoggerContext}.
29 */
30 public class AsyncLoggerContextSelector implements ContextSelector {
31
32 // LOG4J2-666 ensure unique name across separate instances created by webapp classloaders
33 private static final AsyncLoggerContext CONTEXT = new AsyncLoggerContext("AsyncLoggerContext@"
34 + AsyncLoggerContext.class.hashCode());
35
36 @Override
37 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext) {
38 return CONTEXT;
39 }
40
41 @Override
42 public List<LoggerContext> getLoggerContexts() {
43 final List<LoggerContext> list = new ArrayList<>();
44 list.add(CONTEXT);
45 return Collections.unmodifiableList(list);
46 }
47
48 @Override
49 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext,
50 final URI configLocation) {
51 return CONTEXT;
52 }
53
54 @Override
55 public void removeContext(final LoggerContext context) {
56 }
57
58 }