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 */
017package org.apache.logging.log4j.core.config.plugins;
018
019import java.util.concurrent.ConcurrentHashMap;
020import java.util.concurrent.ConcurrentMap;
021
022import org.apache.logging.log4j.core.config.LoggerConfig;
023import org.apache.logging.log4j.core.config.Loggers;
024
025/**
026 * Container of Logger objects.
027 */
028@Plugin(name = "loggers", category = "Core")
029public 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().isEmpty()) {
047                    root = logger;
048                }
049                loggerMap.put(logger.getName(), logger);
050            }
051        }
052
053        return new Loggers(loggerMap, root);
054    }
055}