001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements. See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache license, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License. You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the license for the specific language governing permissions and
015     * limitations under the license.
016     */
017    package org.apache.logging.log4j.core.config;
018    
019    import java.io.Serializable;
020    
021    import org.apache.logging.log4j.Level;
022    import org.apache.logging.log4j.core.Appender;
023    import org.apache.logging.log4j.core.Layout;
024    import org.apache.logging.log4j.core.appender.ConsoleAppender;
025    import org.apache.logging.log4j.core.layout.PatternLayout;
026    import org.apache.logging.log4j.util.PropertiesUtil;
027    
028    /**
029     * The default configuration writes all output to the Console using the default logging level. You configure default
030     * logging level by setting the system property "org.apache.logging.log4j.level" to a level name. If you do not
031     * specify the property, Log4j uses the ERROR Level. Log Events will be printed using the basic formatting provided
032     * by each Message.
033     */
034    public class DefaultConfiguration extends AbstractConfiguration {
035    
036        /**
037         * The name of the default configuration.
038         */
039        public static final String DEFAULT_NAME = "Default";
040        /**
041         * The System Property used to specify the logging level.
042         */
043        public static final String DEFAULT_LEVEL = "org.apache.logging.log4j.level";
044        /**
045         * The default Pattern used for the default Layout.
046         */
047        public static final String DEFAULT_PATTERN = "%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n";
048    
049        /**
050         * Constructor to create the default configuration.
051         */
052        public DefaultConfiguration() {
053            super(ConfigurationSource.NULL_SOURCE);
054            
055            setName(DEFAULT_NAME);
056            final Layout<? extends Serializable> layout = PatternLayout.newBuilder()
057                .withPattern(DEFAULT_PATTERN)
058                .withConfiguration(this)
059                .build();
060            final Appender appender =
061                    ConsoleAppender.createAppender(layout, null, "SYSTEM_OUT", "Console", "false", "true");
062            appender.start();
063            addAppender(appender);
064            final LoggerConfig root = getRootLogger();
065            root.addAppender(appender, null, null);
066    
067            final String levelName = PropertiesUtil.getProperties().getStringProperty(DEFAULT_LEVEL);
068            final Level level = levelName != null && Level.valueOf(levelName) != null ?
069                Level.valueOf(levelName) : Level.ERROR;
070            root.setLevel(level);
071        }
072    
073        @Override
074        protected void doConfigure() {
075        }
076    }