初步完成Mqtt后台服务的改造

DMS.Infrastructure/Interfaces/Services/IMqttBackgroundService.cs

@@ -0,0 +1,54 @@
+using DMS.Core.Models;
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DMS.Infrastructure.Interfaces.Services
+{
+    /// <summary>
+    /// MQTT后台服务接口，负责管理MQTT连接和数据传输
+    /// </summary>
+    public interface IMqttBackgroundService
+    {
+        /// <summary>
+        /// 启动MQTT后台服务
+        /// </summary>
+        Task StartAsync(CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// 停止MQTT后台服务
+        /// </summary>
+        Task StopAsync(CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// 添加MQTT服务器配置
+        /// </summary>
+        void AddMqttServer(MqttServer mqttServer);
+
+        /// <summary>
+        /// 移除MQTT服务器配置
+        /// </summary>
+        Task RemoveMqttServerAsync(int mqttServerId, CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// 更新MQTT服务器配置
+        /// </summary>
+        void UpdateMqttServer(MqttServer mqttServer);
+
+        /// <summary>
+        /// 获取所有MQTT服务器配置
+        /// </summary>
+        IEnumerable<MqttServer> GetAllMqttServers();
+
+        /// <summary>
+        /// 发布变量数据到MQTT服务器
+        /// </summary>
+        Task PublishVariableDataAsync(VariableMqtt variableMqtt, CancellationToken cancellationToken = default);
+
+        /// <summary>
+        /// 发布批量变量数据到MQTT服务器
+        /// </summary>
+        Task PublishVariablesDataAsync(List<VariableMqtt> variableMqtts, CancellationToken cancellationToken = default);
+    }
+}