content: /**
   * 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.activemq.broker.jmx;
  
  import java.util.List;
  
  /**
   * Log4J Configuration Management MBean used to alter the runtime log levels
   * or force a reload of the Log4J configuration file.
   */
  public interface Log4JConfigViewMBean {
  
      /**
       * Get the log level for the root logger
       *
       * @returns the current log level of the root logger.
       *
       * @throws Exception if an error occurs while getting the root level.
       */
      @MBeanInfo("Returns the current logging level of the root logger.")
      String getRootLogLevel() throws Exception;
  
      /**
       * Get the log level for the root logger
       *
       * @param level
       *        the new level to assign to the root logger.
       *
       * @throws Exception if an error occurs while setting the root level.
       */
      @MBeanInfo("Sets the current logging level of the root logger.")
      void setRootLogLevel(String level) throws Exception;
  
      /**
       * list of all the logger names and their levels
       *
       * @return a List of all known loggers names.
       *
       * @throws Exception if an error occurs while getting the loggers.
       */
      @MBeanInfo("List of all loggers that are available for configuration.")
      List<String> getLoggers() throws Exception;
  
      /**
       * Get the log level for a given logger
       *
       * @param loggerName
       *        the name of the logger whose level should be queried.
       *
       * @return the current log level of the given logger.
       *
       * @throws Exception if an error occurs while getting the log level.
       */
      @MBeanInfo("Returns the current logging level of a named logger.")
      String getLogLevel(String loggerName) throws Exception;
  
      /**
       * Set the log level for a given logger
       *
       * @param loggerName
       *        the name of the logger whose level is to be adjusted.
       * @param level
       *        the new level to assign the given logger.
       *
       * @throws Exception if an error occurs while setting the log level.
       */
      @MBeanInfo("Sets the logging level for the named logger.")
      void setLogLevel(String loggerName, String level) throws Exception;
  
      /**
       * Reloads log4j.properties from the classpath.
       *
       * @throws Exception if an error occurs trying to reload the config file.
       */
      @MBeanInfo(value="Reloads log4j.properties from the classpath.")
      public void reloadLog4jProperties() throws Throwable;
  
  }
  