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.io.IOException;
20 import java.io.InputStream;
21 import java.net.URL;
22 import java.util.Properties;
23
24 /**
25 * PropertySource backed by a properties file. Follows the same conventions as {@link PropertiesPropertySource}.
26 *
27 * @since 2.10.0
28 */
29 public class PropertyFilePropertySource extends PropertiesPropertySource {
30
31 public PropertyFilePropertySource(final String fileName) {
32 super(loadPropertiesFile(fileName));
33 }
34
35 private static Properties loadPropertiesFile(final String fileName) {
36 final Properties props = new Properties();
37 for (final URL url : LoaderUtil.findResources(fileName)) {
38 try (final InputStream in = url.openStream()) {
39 props.load(in);
40 } catch (final IOException e) {
41 LowLevelLogUtil.logException("Unable to read " + url, e);
42 }
43 }
44 return props;
45 }
46
47 @Override
48 public int getPriority() {
49 return 0;
50 }
51
52 }