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.plugins;
018    
019    import org.apache.logging.log4j.core.config.LoggerConfig;
020    import org.apache.logging.log4j.core.config.Loggers;
021    
022    import java.util.concurrent.ConcurrentHashMap;
023    import java.util.concurrent.ConcurrentMap;
024    
025    /**
026     * Container of Logger objects.
027     */
028    @Plugin(name = "loggers", type = "Core")
029    public final class LoggersPlugin {
030    
031        private LoggersPlugin() {
032        }
033    
034        /**
035         * Create a Loggers object to contain all the Loggers.
036         * @param loggers An array of Loggers.
037         * @return A Loggers object.
038         */
039        @PluginFactory
040        public static Loggers createLoggers(@PluginElement("loggers") final LoggerConfig[] loggers) {
041            final ConcurrentMap<String, LoggerConfig> loggerMap = new ConcurrentHashMap<String, LoggerConfig>();
042            LoggerConfig root = null;
043    
044            for (final LoggerConfig logger : loggers) {
045                if (logger != null) {
046                    if (logger.getName().length() == 0) {
047                        root = logger;
048                    }
049                    loggerMap.put(logger.getName(), logger);
050                }
051            }
052    
053            return new Loggers(loggerMap, root);
054        }
055    }