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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.util;
18  
19  import org.apache.logging.log4j.util.PropertiesUtil;
20  
21  import java.nio.charset.Charset;
22  
23  /**
24   * Log4j Constants.
25   */
26  public final class Constants {
27  
28      /**
29       * Name of the system property to use to identify the LogEvent factory.
30       */
31      public static final String LOG4J_LOG_EVENT_FACTORY = "Log4jLogEventFactory";
32  
33      /**
34       * Name of the system property to use to identify the ContextSelector Class.
35       */
36      public static final String LOG4J_CONTEXT_SELECTOR = "Log4jContextSelector";
37  
38      public static final String LOG4J_DEFAULT_STATUS_LEVEL = "Log4jDefaultStatusLevel";
39  
40      /**
41       * JNDI context name string literal.
42       */
43      public static final String JNDI_CONTEXT_NAME = "java:comp/env/log4j/context-name";
44  
45      /**
46       * Line separator.
47       */
48      public static final String LINE_SEPARATOR = PropertiesUtil.getProperties().getStringProperty("line.separator", "\n");
49  
50      /**
51       * Number of milliseconds in a second.
52       */
53      public static final int MILLIS_IN_SECONDS = 1000;
54      
55      /**
56       * Equivalent to StandardCharsets.UTF_8.
57       */
58      public static final Charset UTF_8 = Charset.forName("UTF-8");
59  
60      /**
61       * Prevent class instantiation.
62       */
63      private Constants() {
64      }
65  }