    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.util.concurrent.ConcurrentHashMap;
    020    import java.util.concurrent.ConcurrentMap;
    021
    022    import org.apache.logging.log4j.core.config.plugins.Plugin;
    023    import org.apache.logging.log4j.core.config.plugins.PluginElement;
    024    import org.apache.logging.log4j.core.config.plugins.PluginFactory;
    025
    026    /**
    027     * Container of Logger objects.
    028     */
    029    @Plugin(name = "loggers", category = Node.CATEGORY)
    030    public final class LoggersPlugin {
    031
    032        private LoggersPlugin() {
    033        }
    034
    035        /**
    036         * Create a Loggers object to contain all the Loggers.
    037         * @param loggers An array of Loggers.
    038         * @return A Loggers object.
    039         */
    040        @PluginFactory
    041        public static Loggers createLoggers(@PluginElement("Loggers") final LoggerConfig[] loggers) {
    042            final ConcurrentMap<String, LoggerConfig> loggerMap = new ConcurrentHashMap<String, LoggerConfig>();
    043            LoggerConfig root = null;
    044
    045            for (final LoggerConfig logger : loggers) {
    046                if (logger != null) {
    047                    if (logger.getName().isEmpty()) {
    048                        root = logger;
    049                    }
    050                    loggerMap.put(logger.getName(), logger);
    051                }
    052            }
    053
    054            return new Loggers(loggerMap, root);
    055        }
    056    }