/*
 * 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.log4j.spi;


/**
  Interface used to listen for {@link LoggerRepository} related
  events such as startup, reset, and shutdown.  Clients register
  an instance of the interface and the instance is called back
  when the various events occur.

  {@link LoggerRepository} provides methods for adding and removing
  LoggerEventListener instances.

  @author Ceki G&uuml;lc&uuml;
  @author Mark Womack
  @since 1.3
*/
public interface LoggerRepositoryEventListener {
  /**
    Called when the repository configuration is reset.
   @param repository repository
   */
  void configurationResetEvent(LoggerRepository repository);

  /**
    Called when the repository configuration is changed.
   @param repository repository
   */
  void configurationChangedEvent(LoggerRepository repository);

  /**
    Called when the repository is shutdown. When this method is
    invoked, the repository is still valid (ie it has not been
    shutdown, but will be after this method returns).
    @param repository repository.
   */
  void shutdownEvent(LoggerRepository repository);
}