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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.config;
18  
19  import java.io.Serializable;
20  
21  import org.apache.logging.log4j.Level;
22  import org.apache.logging.log4j.core.Appender;
23  import org.apache.logging.log4j.core.Layout;
24  import org.apache.logging.log4j.core.appender.ConsoleAppender;
25  import org.apache.logging.log4j.core.layout.PatternLayout;
26  import org.apache.logging.log4j.util.PropertiesUtil;
27  
28  /**
29   * The default configuration writes all output to the Console using the default logging level. You configure default
30   * logging level by setting the system property "org.apache.logging.log4j.level" to a level name. If you do not
31   * specify the property, Log4j uses the ERROR Level. Log Events will be printed using the basic formatting provided
32   * by each Message.
33   */
34  public class DefaultConfiguration extends AbstractConfiguration {
35  
36      private static final long serialVersionUID = 1L;
37  
38      /**
39       * The name of the default configuration.
40       */
41      public static final String DEFAULT_NAME = "Default";
42      /**
43       * The System Property used to specify the logging level.
44       */
45      public static final String DEFAULT_LEVEL = "org.apache.logging.log4j.level";
46      /**
47       * The default Pattern used for the default Layout.
48       */
49      public static final String DEFAULT_PATTERN = "%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n";
50  
51      /**
52       * Constructor to create the default configuration.
53       */
54      public DefaultConfiguration() {
55          super(ConfigurationSource.NULL_SOURCE);
56          
57          setName(DEFAULT_NAME);
58          final Layout<? extends Serializable> layout = PatternLayout.newBuilder()
59              .withPattern(DEFAULT_PATTERN)
60              .withConfiguration(this)
61              .build();
62          final Appender appender = ConsoleAppender.createDefaultAppenderForLayout(layout);
63          appender.start();
64          addAppender(appender);
65          final LoggerConfig root = getRootLogger();
66          root.addAppender(appender, null, null);
67  
68          final String levelName = PropertiesUtil.getProperties().getStringProperty(DEFAULT_LEVEL);
69          final Level level = levelName != null && Level.valueOf(levelName) != null ?
70              Level.valueOf(levelName) : Level.ERROR;
71          root.setLevel(level);
72      }
73  
74      @Override
75      protected void doConfigure() {
76      }
77  }