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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      /**
37       * The name of the default configuration.
38       */
39      public static final String DEFAULT_NAME = "Default";
40      /**
41       * The System Property used to specify the logging level.
42       */
43      public static final String DEFAULT_LEVEL = "org.apache.logging.log4j.level";
44      /**
45       * The default Pattern used for the default Layout.
46       */
47      public static final String DEFAULT_PATTERN = "%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n";
48  
49      /**
50       * Constructor to create the default configuration.
51       */
52      public DefaultConfiguration() {
53          super(ConfigurationSource.NULL_SOURCE);
54          
55          setName(DEFAULT_NAME);
56          final Layout<? extends Serializable> layout = PatternLayout.newBuilder()
57              .withPattern(DEFAULT_PATTERN)
58              .withConfiguration(this)
59              .build();
60          final Appender appender =
61                  ConsoleAppender.createAppender(layout, null, "SYSTEM_OUT", "Console", "false", "true");
62          appender.start();
63          addAppender(appender);
64          final LoggerConfig root = getRootLogger();
65          root.addAppender(appender, null, null);
66  
67          final String levelName = PropertiesUtil.getProperties().getStringProperty(DEFAULT_LEVEL);
68          final Level level = levelName != null && Level.valueOf(levelName) != null ?
69              Level.valueOf(levelName) : Level.ERROR;
70          root.setLevel(level);
71      }
72  
73      @Override
74      protected void doConfigure() {
75      }
76  }