123 lines
5.5 KiB
C#
123 lines
5.5 KiB
C#
using Newtonsoft.Json;
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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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/// 指令业务逻辑分发器 (纯逻辑层)
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/// <para>职责：解析业务参数 -> 调用 CameraManager -> 返回执行结果</para>
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/// <para>注意：本类不处理网络协议，也不负责 RequestId 的回填，只关注业务本身</para>
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/// </summary>
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public static class CommandBusProcessor
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{
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/// <summary>
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/// 核心业务入口
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/// </summary>
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/// <param name="manager">相机管理器实例</param>
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/// <param name="payload">已解析的指令包</param>
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/// <returns>执行结果 (不含 RequestId，由调用方补充)</returns>
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public static CommandResult ProcessBusinessLogic(CameraManager manager, CommandPayload payload)
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{
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string cmd = payload.CmdCode.ToUpper();
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// 忽略客户端发回的 ACK (如果是双向确认模式)
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if (cmd == "REGISTER_ACK") return CommandResult.Ok();
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// 解析 TargetId (CameraId)
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long deviceId = 0;
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// 只有非 SYSTEM 指令才需要解析设备ID
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if (payload.TargetId != "SYSTEM" && !long.TryParse(payload.TargetId, out deviceId))
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{
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return CommandResult.Fail($"Invalid Device ID: {payload.TargetId}");
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}
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try
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{
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switch (cmd)
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{
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// ==========================================
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// 1. PTZ 云台控制
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// ==========================================
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case "PTZ":
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{
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var device = manager.GetDevice(deviceId);
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if (device == null) return CommandResult.Fail("Device Not Found");
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if (!device.IsOnline) return CommandResult.Fail("Device Offline");
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// 检查设备是否支持 PTZ 能力 (接口模式匹配)
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if (device is IPtzFeature ptzFeature)
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{
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var ptzDto = JsonConvert.DeserializeObject<PtzControlDto>(payload.JsonParams);
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if (ptzDto == null) return CommandResult.Fail("Invalid PTZ Params");
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// 异步转同步执行 (Task.Wait 在后台线程是安全的)
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if (ptzDto.Duration > 0)
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{
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// 点动模式 (例如：向左转 500ms)
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ptzFeature.PtzStepAsync(ptzDto.Action, ptzDto.Duration, ptzDto.Speed).Wait();
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}
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else
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{
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// 持续模式 (开始转/停止转)
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ptzFeature.PtzControlAsync(ptzDto.Action, ptzDto.Stop, ptzDto.Speed).Wait();
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}
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return CommandResult.Ok("PTZ Executed");
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}
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return CommandResult.Fail("Device does not support PTZ");
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}
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// ==========================================
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// 2. 远程重启
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// ==========================================
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case "REBOOT":
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{
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var device = manager.GetDevice(deviceId);
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if (device == null) return CommandResult.Fail("Device Not Found");
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if (device is IRebootFeature rebootFeature)
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{
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rebootFeature.RebootAsync().Wait();
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return CommandResult.Ok("Reboot command sent");
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}
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return CommandResult.Fail("Device does not support Reboot");
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}
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// ==========================================
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// 3. 时间同步
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// ==========================================
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case "SYNC_TIME":
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{
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var device = manager.GetDevice(deviceId);
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if (device == null) return CommandResult.Fail("Device Not Found");
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if (device is ITimeSyncFeature timeFeature)
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{
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timeFeature.SetTimeAsync(DateTime.Now).Wait();
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return CommandResult.Ok("Time synced");
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}
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return CommandResult.Fail("Device does not support TimeSync");
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}
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// ==========================================
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// 4. 系统级指令 (心跳/诊断)
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// ==========================================
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case "PING":
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return CommandResult.Ok("PONG");
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default:
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return CommandResult.Fail($"Unknown Command: {cmd}");
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}
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}
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catch (AggregateException ae)
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{
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// 捕获异步任务内部的异常
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return CommandResult.Fail($"Execution Error: {ae.InnerException?.Message}");
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}
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catch (Exception ex)
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{
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return CommandResult.Fail($"Execution Error: {ex.Message}");
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}
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}
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}
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} |