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.util;
18
19 import java.util.Map;
20 import java.util.Properties;
21
22 /**
23 * PropertySource backed by a {@link Properties} instance. Normalized property names follow a scheme like this:
24 * {@code Log4jContextSelector} would normalize to {@code log4j2.contextSelector}.
25 *
26 * @since 2.10.0
27 */
28 public class PropertiesPropertySource implements PropertySource {
29
30 private static final String PREFIX = "log4j2.";
31
32 private final Properties properties;
33
34 public PropertiesPropertySource(final Properties properties) {
35 this.properties = properties;
36 }
37
38 @Override
39 public int getPriority() {
40 return 0;
41 }
42
43 @Override
44 public void forEach(final BiConsumer<String, String> action) {
45 for (final Map.Entry<Object, Object> entry : properties.entrySet()) {
46 action.accept(((String) entry.getKey()), ((String) entry.getValue()));
47 }
48 }
49
50 @Override
51 public CharSequence getNormalForm(final Iterable<? extends CharSequence> tokens) {
52 return PREFIX + Util.joinAsCamelCase(tokens);
53 }
54 }