base-project/ruoyi-mqtt/src/main/java/com/ruoyi/mqtt/MqttEventHandler.java

package com.ruoyi.mqtt;

import com.ruoyi.mqtt.event.*;

/**
 * 事件 处理句柄
 */
public interface MqttEventHandler {

  /**
   * 处理
   *
   * @param event 事件
   * @param item  产生的MQTT操作项
   * @return 是否处理下一个句柄
   */
  default boolean next(MqttEvent event, MqttItem item) {
    if (event instanceof MqttConnectionExceptionEvent) {
      return next((MqttConnectionExceptionEvent) event, item);
    } else if (event instanceof MqttConnectionLostEvent) {
      return next((MqttConnectionLostEvent) event, item);
    } else if (event instanceof MqttConnectionSuccessEvent) {
      return next((MqttConnectionSuccessEvent) event, item);
    } else if (event instanceof MqttMessageDeliveryEvent) {
      return next((MqttMessageDeliveryEvent) event, item);
    } else if (event instanceof MqttMessageEvent) {
      return next((MqttMessageEvent) event, item);
    } else if (event instanceof MqttReconnectionEvent) {
      return next((MqttReconnectionEvent) event, item);
    }
    return false;
  }

  default boolean next(MqttConnectionExceptionEvent event, MqttItem item) {
    return true;
  }

  default boolean next(MqttConnectionLostEvent event, MqttItem item) {
    return true;
  }

  default boolean next(MqttConnectionSuccessEvent event, MqttItem item) {
    return true;
  }

  default boolean next(MqttMessageDeliveryEvent event, MqttItem item) {
    return true;
  }

  default boolean next(MqttMessageEvent event, MqttItem item) {
    return true;
  }

  default boolean next(MqttReconnectionEvent event, MqttItem item) {
    return true;
  }
}