修复在线导致的一个 Bug
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23
SHH.CameraSdk/Abstractions/IDeviceConnectivity.cs
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23
SHH.CameraSdk/Abstractions/IDeviceConnectivity.cs
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namespace SHH.CameraSdk;
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/// <summary>
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/// [状态代理契约] 设备连通性接口
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/// 职责:仅暴露网络探测所需的最小数据集,屏蔽驱动层的复杂逻辑
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/// </summary>
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public interface IDeviceConnectivity
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{
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// 设备的 ID (用于日志)
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long Id { get; }
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// 目标 IP 地址
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string IpAddress { get; }
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// 当前业务状态 (用于判断是否需要降级探测策略)
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VideoSourceStatus Status { get; }
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// 最后一次收到视频帧的时间 (用于帧心跳判定)
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long LastFrameTick { get; }
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// [核心] 代理入口:允许外部哨兵更新设备的在线状态
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void SetNetworkStatus(bool isOnline);
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}
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@@ -195,7 +195,7 @@ public class CameraManager : IDisposable, IAsyncDisposable
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Name = cam.Config.Name,
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IpAddress = cam.Config.IpAddress,
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Status = cam.Status.ToString(),
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IsOnline = cam.IsOnline,
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IsOnline = cam.IsPhysicalOnline,
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Fps = cam.RealFps,
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Bitrate = cam.RealBitrate, // [新增] 映射基类属性
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TotalFrames = cam.TotalFrames,
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@@ -133,7 +133,7 @@ public class CameraCoordinator
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#region --- 状态调和逻辑 (Reconciliation Logic) ---
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/// <summary>
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/// 相机状态调和(核心自愈逻辑)
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/// 相机状态调和(核心自愈逻辑 - 修复版)
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/// 功能:校验相机物理连接、流状态,执行启动/停止/复位操作,确保状态一致性
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/// </summary>
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/// <param name="cam">待调和的相机设备</param>
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@@ -148,12 +148,16 @@ public class CameraCoordinator
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bool isFlowing = cam.IsOnline && secondsSinceLastFrame < StreamAliveThresholdSeconds;
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// 3. 判定物理连接是否正常:流正常则直接判定在线;否则执行 Ping+TCP 探测
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// (注意:如果哨兵已经更新了 Ping 状态,ProbeHardwareAsync 内部也可以优化为直接读取,
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// 但在 Coordinator 里保留主动探测作为双重保险也是合理的)
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bool isPhysicalOk = isFlowing ? true : await ProbeHardwareAsync(cam).ConfigureAwait(false);
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// 4. 状态调和决策:根据物理状态与设备状态的差异执行对应操作
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// 场景 A: 物理在线 + 设备离线 + 用户要求运行 -> 执行启动
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if (isPhysicalOk && !cam.IsOnline && cam.IsRunning)
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{
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// 物理在线 + 设备离线 + 需运行 → 执行启动(加登录锁防止冲突)
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// 加登录锁防止冲突
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bool lockTaken = false;
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try
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{
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@@ -173,14 +177,15 @@ public class CameraCoordinator
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}
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}
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}
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// 场景 B: 物理离线 + 设备在线 -> 执行强制停止
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else if (!isPhysicalOk && cam.IsOnline)
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{
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// 物理离线 + 设备在线 → 执行停止
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await cam.StopAsync().ConfigureAwait(false);
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}
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else if (isPhysicalOk && cam.IsOnline && !isFlowing)
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// 场景 C: 物理在线 + 设备在线 + 流中断 + 【用户要求运行】 -> 判定为僵死
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// 【关键修复】:增加了 && cam.IsRunning 判定,防止待机状态下被误复位
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else if (isPhysicalOk && cam.IsOnline && !isFlowing && cam.IsRunning) // [cite: 504]
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{
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// 物理在线 + 设备在线 + 流中断 → 判定为僵死,执行复位
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Console.WriteLine($"[自愈] 设备 {cam.Id} 僵死({secondsSinceLastFrame:F1}秒无帧),复位中...");
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await cam.StopAsync().ConfigureAwait(false);
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}
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103
SHH.CameraSdk/Core/Services/ConnectivitySentinel.cs
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103
SHH.CameraSdk/Core/Services/ConnectivitySentinel.cs
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using System.Net.NetworkInformation;
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namespace SHH.CameraSdk;
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/// <summary>
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/// [状态代理] 网络连通性哨兵
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/// 特性:
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/// 1. 低耦合:不依赖具体驱动,只依赖接口
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/// 2. 高性能:使用 Parallel.ForEachAsync 实现受控并行
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/// 3. 智能策略:播放中不Ping,空闲时才Ping
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/// </summary>
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public class ConnectivitySentinel
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{
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private readonly CameraManager _manager; // [cite: 329]
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private readonly PeriodicTimer _timer;
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private readonly CancellationTokenSource _cts = new();
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// [关键配置] 最大并发度
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// 建议值:CPU 核心数 * 4,或者固定 16-32
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// 50 个摄像头,设为 16,意味着分 4 批完成,总耗时极短
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private const int MAX_PARALLELISM = 16;
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public ConnectivitySentinel(CameraManager manager)
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{
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_manager = manager;
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// 每 3 秒执行一轮全量巡检
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_timer = new PeriodicTimer(TimeSpan.FromSeconds(3));
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// 启动后台任务(不阻塞主线程)
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_ = RunLoopAsync();
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}
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private async Task RunLoopAsync()
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{
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try
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{
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// 等待下一个 3秒 周期
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while (await _timer.WaitForNextTickAsync(_cts.Token))
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{
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// 1. 获取当前所有设备的快照
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// CameraManager.GetAllDevices() 返回的是 BaseVideoSource,它实现了 IDeviceConnectivity
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var devices = _manager.GetAllDevices().Cast<IDeviceConnectivity>();
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// 2. [核心回答] 受控并行执行
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// .NET 6+ 提供的超级 API,专门解决“一下子 50 个”的问题
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await Parallel.ForEachAsync(devices, new ParallelOptions
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{
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MaxDegreeOfParallelism = MAX_PARALLELISM,
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CancellationToken = _cts.Token
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},
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async (device, token) =>
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{
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// 对每个设备执行独立检查
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await CheckSingleDeviceAsync(device);
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});
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}
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}
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catch (OperationCanceledException) { /* 正常停止 */ }
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}
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private async Task CheckSingleDeviceAsync(IDeviceConnectivity device)
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{
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bool isAlive = false;
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// [智能策略]:如果设备正在取流,直接检查帧心跳(省流模式)
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if (device.Status == VideoSourceStatus.Playing || device.Status == VideoSourceStatus.Streaming)
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{
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long now = Environment.TickCount64;
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// 5秒内有帧,就算在线
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isAlive = (now - device.LastFrameTick) < 5000;
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}
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else
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{
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// [主动探测]:空闲或离线时,发射 ICMP Ping
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isAlive = await PingAsync(device.IpAddress);
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}
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// [状态注入]:将探测结果“注入”回设备
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device.SetNetworkStatus(isAlive);
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}
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// 纯粹的 Ping 逻辑
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private async Task<bool> PingAsync(string ip)
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{
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try
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{
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using var ping = new Ping();
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// 超时设为 800ms,快速失败,避免拖慢整体批次
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var reply = await ping.SendPingAsync(ip, 800);
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return reply.Status == IPStatus.Success;
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}
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catch
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{
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return false;
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}
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}
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public void Stop()
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{
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_cts.Cancel();
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_timer.Dispose();
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}
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}
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@@ -12,8 +12,26 @@
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/// <para>✅ [Bug π] 管道安全:Dispose 采用优雅关闭策略,确保剩余状态消息被消费</para>
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/// <para>✅ [编译修复] 补全 CloneConfig 中 Transport/VendorArguments 的深拷贝逻辑</para>
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/// </summary>
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public abstract class BaseVideoSource : IVideoSource, IAsyncDisposable
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public abstract class BaseVideoSource : IVideoSource, IAsyncDisposable, IDeviceConnectivity
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{
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// [新增] 物理在线状态(专门给 Ping 使用)
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private volatile bool _isPhysicalOnline;
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public bool IsPhysicalOnline => _isPhysicalOnline;
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string IDeviceConnectivity.IpAddress => _config.IpAddress;
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// 允许哨兵从外部更新 _isOnline 字段
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void IDeviceConnectivity.SetNetworkStatus(bool isOnline)
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{
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if (_isPhysicalOnline != isOnline)
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{
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_isPhysicalOnline = isOnline;
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// 触发状态变更是为了通知 UI 更新绿色小圆点,但不改变 Status
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// 注意:这里传 _status 保持原样,只变消息
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StatusChanged?.Invoke(this, new StatusChangedEventArgs(_status, isOnline ? "物理网络恢复" : "物理网络中断"));
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}
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}
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#region --- 1. 核心配置与锁机制 (Core Config & Locks) ---
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/// <summary>
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@@ -256,13 +274,17 @@ public abstract class BaseVideoSource : IVideoSource, IAsyncDisposable
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using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(15));
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await OnStartAsync(cts.Token).ConfigureAwait(false);
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// ============================================================
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// 【核心修复位置】
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// 赋予心跳 5 秒的宽限期 (Grace Period)
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// 这样 Coordinator 在未来 5 秒内计算出来的无帧时间将是负数或极小值,不会触发复位
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// ============================================================
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Interlocked.Exchange(ref _lastFrameTick, Environment.TickCount64 + 5000);
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// 标记运行状态
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_isOnline = true;
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IsRunning = true;
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// 初始化心跳:给予 2 秒宽限期,防止刚启动被判定为僵死
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Interlocked.Exchange(ref _lastFrameTick, Environment.TickCount64 + 2000);
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// 更新状态为播放中,并刷新元数据
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UpdateStatus(VideoSourceStatus.Playing, "流传输正常运行");
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await RefreshMetadataAsync().ConfigureAwait(false);
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@@ -1,5 +1,6 @@
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using Microsoft.AspNetCore.Builder;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Logging;
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using Microsoft.OpenApi.Models;
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using OpenCvSharp;
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using SHH.CameraSdk;
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@@ -32,6 +33,10 @@ namespace SHH.CameraSdk
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// ==============================================================================
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var app = await StartWebMonitoring(cameraManager);
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// [新增] 启动网络哨兵 (它会自动在后台跑)
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// 就像保安一样,你不需要管它,它每3秒会把所有摄像头的 IsOnline 状态刷一遍
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var sentinel = new ConnectivitySentinel(cameraManager);
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// ==============================================================================
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// 3. 业务编排:配置设备与流控策略 (8+2 演示)
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// ==============================================================================
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@@ -75,6 +80,11 @@ namespace SHH.CameraSdk
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{
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var builder = WebApplication.CreateBuilder();
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// [新增] 屏蔽日志配置
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builder.Logging.AddFilter("Microsoft", Microsoft.Extensions.Logging.LogLevel.Warning);
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builder.Logging.AddFilter("System", Microsoft.Extensions.Logging.LogLevel.Warning);
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builder.Logging.AddFilter("Microsoft.AspNetCore.Hosting.Diagnostics", Microsoft.Extensions.Logging.LogLevel.Warning);
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// 注入服务
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builder.Services.AddControllers();
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builder.Services.AddEndpointsApiExplorer();
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@@ -134,6 +144,23 @@ namespace SHH.CameraSdk
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renderer.Enqueue(frame);
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});
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}
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var config2 = new VideoSourceConfig
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{
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Id = 102,
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Brand = DeviceBrand.HikVision,
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IpAddress = "172.16.41.20",
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Port = 8000,
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Username = "admin",
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Password = "abcd1234",
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StreamType = 0 // 主码流
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};
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manager.AddDevice(config2);
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//if (manager.GetDevice(102) is HikVideoSource hikCamera2)
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//{
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//}
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}
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}
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}
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