View Javadoc

    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements. See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache license, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License. You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the license for the specific language governing permissions and
    15   * limitations under the license.
    16   */
    17  package org.apache.logging.log4j.core.config;
    18
    19  import java.util.concurrent.ConcurrentHashMap;
    20  import java.util.concurrent.ConcurrentMap;
    21
    22  import org.apache.logging.log4j.core.config.plugins.Plugin;
    23  import org.apache.logging.log4j.core.config.plugins.PluginElement;
    24  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
    25
    26  /**
    27   * Container of Logger objects.
    28   */
    29  @Plugin(name = "loggers", category = Node.CATEGORY)
    30  public final class LoggersPlugin {
    31
    32      private LoggersPlugin() {
    33      }
    34
    35      /**
    36       * Create a Loggers object to contain all the Loggers.
    37       * @param loggers An array of Loggers.
    38       * @return A Loggers object.
    39       */
    40      @PluginFactory
    41      public static Loggers createLoggers(@PluginElement("Loggers") final LoggerConfig[] loggers) {
    42          final ConcurrentMap<String, LoggerConfig> loggerMap = new ConcurrentHashMap<String, LoggerConfig>();
    43          LoggerConfig root = null;
    44
    45          for (final LoggerConfig logger : loggers) {
    46              if (logger != null) {
    47                  if (logger.getName().isEmpty()) {
    48                      root = logger;
    49                  }
    50                  loggerMap.put(logger.getName(), logger);
    51              }
    52          }
    53
    54          return new Loggers(loggerMap, root);
    55      }
    56  }