84 lines
3.0 KiB
C#
84 lines
3.0 KiB
C#
using Newtonsoft.Json.Linq;
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using SHH.CameraSdk;
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using SHH.Contracts;
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namespace SHH.CameraService
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{
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/// <summary>
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/// 移除设备指令处理器
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/// </summary>
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public class RemoveCameraHandler : ICommandHandler
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{
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private readonly CameraManager _cameraManager;
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/// <summary>
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/// 指令名称
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/// </summary>
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public string ActionName => ProtocolHeaders.Remove_Camera;
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/// <summary>
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/// 构造函数
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/// </summary>
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/// <param name="cameraManager"></param>
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public RemoveCameraHandler(CameraManager cameraManager)
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{
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_cameraManager = cameraManager;
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}
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/// <summary>
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/// 处理指令
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/// </summary>
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/// <param name="payload"></param>
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public async Task ExecuteAsync(JToken payload)
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{
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long deviceId = 0;
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try
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{
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// 1. 增强型 ID 解析
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if (payload.Type == JTokenType.Object)
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{
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// 兼容大小写不敏感的解析
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var idToken = payload["Id"] ?? payload["id"];
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if (idToken != null) deviceId = idToken.Value<long>();
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}
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else if (payload.Type == JTokenType.Integer || payload.Type == JTokenType.String)
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{
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// 兼容字符串形式的 ID
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long.TryParse(payload.ToString(), out deviceId);
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}
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if (deviceId <= 0)
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{
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Console.WriteLine($"[{ActionName}] 收到无效指令: ID解析失败 ({payload})");
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return;
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}
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// 2. 预检查
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var device = _cameraManager.GetDevice(deviceId);
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if (device == null)
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{
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Console.WriteLine($"[{ActionName}] 设备 {deviceId} 已经不在管理池中，无需操作。");
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return;
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}
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// 3. 安全移除
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// 这里建议增加审计日志，记录谁触发了删除（如果协议里有用户信息的话）
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device.AddAuditLog("收到远程指令：彻底移除设备");
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Console.WriteLine($"[{ActionName}] 正在安全移除设备: {deviceId} ({device.Config.Name})");
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// CameraManager 内部会：StopAsync -> DisposeAsync -> TryRemove -> SaveChanges
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await _cameraManager.RemoveDeviceAsync(deviceId);
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Console.WriteLine($"[{ActionName}] 设备 {deviceId} 已彻底清理并从持久化库中移除。");
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// 4. (可选) 此处可以调用 CommandDispatcher 发送 Success ACK
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}
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catch (Exception ex)
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{
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// 捕获异常，防止影响全局 Socket 轮询
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Console.WriteLine($"[{ActionName}] 移除设备 {deviceId} 过程中发生致命错误: {ex.Message}");
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}
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}
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}
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} |