/*
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  
  package ch.qos.logback.core.spi;
  
  /**
   * This class configuration events which can be of various types such as
   *  CHANGE_DETECTED, CONFIGURATION_STARTED and CONFIGURATION_ENDED.
   *
   *  Configuration events can be accompanied by supplemental data which can be null.
   *
   * @since 1.3.6/1.4.6
   */
  
  public class ConfigurationEvent {
  
  
      public enum EventType {
          CHANGE_DETECTOR_REGISTERED,
  
          CHANGE_DETECTOR_RUNNING,
          CHANGE_DETECTED,
          CONFIGURATION_STARTED,
          CONFIGURATION_ENDED;
      }
      final EventType eventType;
      final Object data;
  
      /**
       * Construct a ConfigurationEvent instance.
       *
       * @param eventType
       * @param data supplemental data, can be null
       */
      private ConfigurationEvent(EventType eventType, Object data) {
          this.eventType = eventType;
          this.data = data;
      }
  
      static public ConfigurationEvent newConfigurationChangeDetectorRunningEvent(Object data) {
          return new ConfigurationEvent(EventType.CHANGE_DETECTOR_RUNNING, data);
      }
  
      static public ConfigurationEvent newConfigurationChangeDetectorRegisteredEvent(Object data) {
          return new ConfigurationEvent(EventType.CHANGE_DETECTOR_REGISTERED, data);
      }
      static public ConfigurationEvent newConfigurationChangeDetectedEvent(Object data) {
          return new ConfigurationEvent(EventType.CHANGE_DETECTED, data);
      }
      static public ConfigurationEvent newConfigurationStartedEvent(Object data) {
          return new ConfigurationEvent(EventType.CONFIGURATION_STARTED, data);
      }
      static public ConfigurationEvent newConfigurationEndedEvent(Object data) {
          return new ConfigurationEvent(EventType.CONFIGURATION_ENDED, data);
      }
  
      public EventType getEventType() {
          return eventType;
      }
  
      public Object getData() {
          return data;
      }
  
  
      @Override
      public String toString() {
          return "ConfigurationEvent{" + "eventType=" + eventType + ", data=" + data + '}';
      }
  }