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;
018
019import java.util.concurrent.ConcurrentHashMap;
020import java.util.concurrent.ConcurrentMap;
021
022import org.apache.logging.log4j.core.config.plugins.Plugin;
023import org.apache.logging.log4j.core.config.plugins.PluginElement;
024import org.apache.logging.log4j.core.config.plugins.PluginFactory;
025
026/**
027 * Container of Logger objects.
028 */
029@Plugin(name = "loggers", category = Node.CATEGORY)
030public 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}