    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        private static final long serialVersionUID = 1L;
    037
    038        /**
    039         * The name of the default configuration.
    040         */
    041        public static final String DEFAULT_NAME = "Default";
    042        /**
    043         * The System Property used to specify the logging level.
    044         */
    045        public static final String DEFAULT_LEVEL = "org.apache.logging.log4j.level";
    046        /**
    047         * The default Pattern used for the default Layout.
    048         */
    049        public static final String DEFAULT_PATTERN = "%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n";
    050
    051        /**
    052         * Constructor to create the default configuration.
    053         */
    054        public DefaultConfiguration() {
    055            super(ConfigurationSource.NULL_SOURCE);
    056
    057            setName(DEFAULT_NAME);
    058            final Layout<? extends Serializable> layout = PatternLayout.newBuilder()
    059                .withPattern(DEFAULT_PATTERN)
    060                .withConfiguration(this)
    061                .build();
    062            final Appender appender = ConsoleAppender.createDefaultAppenderForLayout(layout);
    063            appender.start();
    064            addAppender(appender);
    065            final LoggerConfig root = getRootLogger();
    066            root.addAppender(appender, null, null);
    067
    068            final String levelName = PropertiesUtil.getProperties().getStringProperty(DEFAULT_LEVEL);
    069            final Level level = levelName != null && Level.valueOf(levelName) != null ?
    070                Level.valueOf(levelName) : Level.ERROR;
    071            root.setLevel(level);
    072        }
    073
    074        @Override
    075        protected void doConfigure() {
    076        }
    077    }