在 AiVideo 中能看到图像

增加了在线状态同步逻辑

SHH.CameraService/Core/NetSenders/DeviceStateMonitorWorker.cs

@@ -0,0 +1,151 @@
+using System.Collections.Concurrent;
+using Microsoft.Extensions.Hosting;
+using NetMQ;
+using NetMQ.Sockets;
+using MessagePack;
+using SHH.CameraSdk;
+using SHH.Contracts;
+
+namespace SHH.CameraService
+{
+    /// <summary>
+    /// [二合一] 设备状态聚合与上报服务
+    /// </summary>
+    public class DeviceStateMonitorWorker : BackgroundService
+    {
+        private readonly CameraManager _manager;
+        private readonly ServiceConfig _config;
+
+        // ★ 2. 注入拦截器管道
+        private readonly InterceptorPipeline _pipeline;
+
+        // 本地状态全集缓存
+        private readonly ConcurrentDictionary<string, StatusEventPayload> _stateStore = new();
+
+        // 标记是否有新变更
+        private volatile bool _isDirty = false;
+        private long _lastSendTick = 0;
+
+        // ★ 3. 构造函数增加 InterceptorPipeline 参数
+        public DeviceStateMonitorWorker(
+            CameraManager manager,
+            ServiceConfig config,
+            InterceptorPipeline pipeline) // <--- 注入点
+        {
+            _manager = manager;
+            _config = config;
+            _pipeline = pipeline;
+        }
+
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+        {
+            // 1. 初始化缓存 (默认离线)
+            foreach (var dev in _manager.GetAllDevices())
+            {
+                UpdateLocalState(dev.Id, false, "Init");
+            }
+
+            // 2. 挂载 SDK 事件
+            _manager.OnDeviceStatusChanged += OnSdkStatusChanged;
+
+            // 3. 建立连接
+            var cmdEndpoint = _config.CommandEndpoints.FirstOrDefault()?.Uri;
+            if (string.IsNullOrEmpty(cmdEndpoint))
+            {
+                Console.WriteLine("[StatusWorker] 警告: 未配置 Command 端点，状态上报无法启动。");
+                return;
+            }
+
+            Console.WriteLine($"[StatusWorker] 启动状态上报，直连服务端: {cmdEndpoint}");
+
+            using var socket = new DealerSocket();
+            socket.Options.SendHighWatermark = 1000;
+            // 设置 Identity 是个好习惯，虽然这里只发不收
+            // socket.Options.Identity = ... 
+            socket.Connect(cmdEndpoint);
+
+            // 4. 定时循环 (1秒1次)
+            var timer = new PeriodicTimer(TimeSpan.FromSeconds(1));
+            try
+            {
+                while (await timer.WaitForNextTickAsync(stoppingToken))
+                {
+                    // ★ 4. 关键修正：必须使用 await 调用新的异步方法
+                    await CheckAndDirectSendAsync(socket);
+                }
+            }
+            finally
+            {
+                _manager.OnDeviceStatusChanged -= OnSdkStatusChanged;
+                socket.Dispose();
+            }
+        }
+
+        private void OnSdkStatusChanged(long deviceId, bool isOnline, string reason)
+        {
+            UpdateLocalState(deviceId, isOnline, reason);
+            _isDirty = true;
+        }
+
+        private void UpdateLocalState(long deviceId, bool isOnline, string reason)
+        {
+            var evt = new StatusEventPayload
+            {
+                CameraId = deviceId.ToString(),
+                IsOnline = isOnline,
+                Reason = reason,
+                Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()
+            };
+            _stateStore[deviceId.ToString()] = evt;
+        }
+
+        /// <summary>
+        /// 检查并在当前线程直接发送 (已改为异步 Task)
+        /// </summary>
+        // ★ 5. 关键修正：void -> async Task
+        private async Task CheckAndDirectSendAsync(NetMQSocket socket)
+        {
+            long now = Environment.TickCount64;
+            // 策略: 有变更 或 超过5秒(心跳)
+            bool shouldSend = _isDirty || (now - _lastSendTick > 5000);
+
+            if (shouldSend)
+            {
+                try
+                {
+                    // A. 组包 (全量)
+                    var snapshot = _stateStore.Values.ToList();
+                    var batch = new StatusBatchPayload
+                    {
+                        Items = snapshot,
+                        Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()
+                    };
+
+                    // B. 序列化
+                    byte[] data = MessagePackSerializer.Serialize(batch);
+
+                    // =========================================================
+                    // ★ 6. 拦截器调用
+                    // =========================================================
+                    // 这里的 "STATUS_BATCH" 是协议头，你可以替换为 ProtocolHeaders.StatusBatch (如果定义了的话)
+                    var ctx = await _pipeline.ExecuteSendAsync("STATUS_BATCH", data);
+
+                    if (ctx != null) // 如果没被拦截
+                    {
+                        // C. 直接发送
+                        socket.SendMoreFrame(ctx.Protocol)
+                              .SendFrame(ctx.Data);
+
+                        // D. 重置标记
+                        _isDirty = false;
+                        _lastSendTick = now;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"[StatusWorker] 发送失败: {ex.Message}");
+                }
+            }
+        }
+    }
+}