/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements. See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache license, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License. You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the license for the specific language governing permissions and
   * limitations under the license.
   */
  package org.apache.logging.log4j.core.config;
  
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  
  import org.apache.logging.log4j.core.config.LoggerConfig;
  import org.apache.logging.log4j.core.config.Loggers;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginElement;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  
  /**
   * Container of Logger objects.
   */
  @Plugin(name = "loggers", category = "Core")
  public final class LoggersPlugin {
  
      private LoggersPlugin() {
      }
  
      /**
       * Create a Loggers object to contain all the Loggers.
       * @param loggers An array of Loggers.
       * @return A Loggers object.
       */
      @PluginFactory
      public static Loggers createLoggers(@PluginElement("Loggers") final LoggerConfig[] loggers) {
          final ConcurrentMap<String, LoggerConfig> loggerMap = new ConcurrentHashMap<String, LoggerConfig>();
          LoggerConfig root = null;
  
          for (final LoggerConfig logger : loggers) {
              if (logger != null) {
                  if (logger.getName().isEmpty()) {
                      root = logger;
                  }
                  loggerMap.put(logger.getName(), logger);
              }
          }
  
          return new Loggers(loggerMap, root);
      }
  }