430 lines
17 KiB
C#
430 lines
17 KiB
C#
namespace SHH.CameraSdk;
|
||
|
||
/// <summary>
|
||
/// [管理层] 视频源总控管理器 (V3.3.1 修复版)
|
||
/// 核心职责:统一管理所有相机设备的生命周期、状态监控与资源清理,对接协调器实现自动自愈
|
||
/// 核心修复:
|
||
/// <para>1. [Bug γ] 二次伤害:强化销毁流程,防止 Dispose 阶段因 GC 乱序导致的非托管内存非法访问</para>
|
||
/// <para>2. [Bug A/L] 继承之前的动态感知与末日销毁协同修复,保障多线程环境下的状态一致性</para>
|
||
/// </summary>
|
||
public class CameraManager : IDisposable, IAsyncDisposable
|
||
{
|
||
#region --- 1. 核心资源与状态 (Fields & States) ---
|
||
|
||
/// <summary> 全局设备实例池(线程安全),Key = 设备唯一标识 </summary>
|
||
private readonly ConcurrentDictionary<long, BaseVideoSource> _cameraPool = new();
|
||
|
||
/// <summary> 后台协调器实例:负责心跳检测、断线重连、僵尸流恢复 </summary>
|
||
private readonly CameraCoordinator _coordinator = new();
|
||
|
||
/// <summary> 全局取消令牌源:用于销毁时瞬间关停所有异步扫描任务 </summary>
|
||
private readonly CancellationTokenSource _globalCts = new();
|
||
|
||
/// <summary> 销毁状态标记:防止重复销毁或销毁过程中执行操作 </summary>
|
||
private volatile bool _isDisposed;
|
||
|
||
/// <summary>
|
||
/// [Fix Bug A: 动态失效] 协调器引擎运行状态标记
|
||
/// 使用 volatile 关键字确保多线程环境下的内存可见性,避免指令重排导致的状态不一致
|
||
/// </summary>
|
||
private volatile bool _isEngineStarted = false;
|
||
|
||
#endregion
|
||
|
||
#region --- 2. 设备管理 (Device Management) ---
|
||
|
||
/// <summary>
|
||
/// 向管理池添加新相机设备
|
||
/// </summary>
|
||
/// <param name="config">相机设备配置信息</param>
|
||
public void AddDevice(VideoSourceConfig config)
|
||
{
|
||
//// [安全防护] 销毁过程中禁止添加新设备
|
||
//if (_isDisposed) return;
|
||
//// 防止重复添加同一设备
|
||
//if (_cameraPool.ContainsKey(config.Id)) return;
|
||
|
||
//// 1. 根据设备品牌实例化对应的驱动实现类
|
||
//BaseVideoSource source = config.Brand switch
|
||
//{
|
||
// DeviceBrand.HikVision => new HikVideoSource(config),
|
||
// _ => throw new NotSupportedException($"不支持的相机品牌: {config.Brand}")
|
||
//};
|
||
|
||
//// 2. [Fix Bug A] 动态激活逻辑:引擎已启动时,新设备直接标记为运行状态
|
||
//if (_isEngineStarted)
|
||
//{
|
||
// source.IsRunning = true;
|
||
//}
|
||
|
||
//// 3. 将设备注册到内存池与协调器,纳入统一管理
|
||
//if (_cameraPool.TryAdd(config.Id, source))
|
||
//{
|
||
// _coordinator.Register(source);
|
||
//}
|
||
|
||
// 使用工厂方法创建
|
||
var device = CreateDeviceInstance(config);
|
||
|
||
if (!_cameraPool.TryAdd(config.Id, device))
|
||
{
|
||
// 如果添加失败(ID冲突),由于 device 还没被使用,直接释放掉
|
||
// 这里不需要 await,因为刚 new 出来的对象还没 connect
|
||
device.DisposeAsync().AsTask().Wait();
|
||
throw new InvalidOperationException($"设备 ID {config.Id} 已存在");
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 根据设备ID获取指定的视频源实例
|
||
/// </summary>
|
||
/// <param name="id">设备唯一标识</param>
|
||
/// <returns>视频源实例 / 不存在则返回 null</returns>
|
||
public BaseVideoSource? GetDevice(long id)
|
||
=> _cameraPool.TryGetValue(id, out var source) ? source : null;
|
||
|
||
/// <summary>
|
||
/// 获取当前管理的所有相机设备
|
||
/// </summary>
|
||
/// <returns>设备实例集合</returns>
|
||
public IEnumerable<BaseVideoSource> GetAllDevices()
|
||
{
|
||
return _cameraPool.Values.ToList();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 从管理池中移除指定设备并释放资源
|
||
/// </summary>
|
||
/// <param name="id">设备唯一标识</param>
|
||
public void RemoveDevice(long id)
|
||
{
|
||
if (_cameraPool.TryRemove(id, out var device))
|
||
{
|
||
// 记录日志
|
||
System.Console.WriteLine($"[Manager] 正在移除设备 {id}...");
|
||
|
||
// 1. 停止物理连接 (异步转同步等待,防止资源未释放)
|
||
// 在实际高并发场景建议改为 RemoveDeviceAsync
|
||
device.StopAsync().GetAwaiter().GetResult();
|
||
|
||
// 2. 释放资源 (销毁非托管句柄)
|
||
device.Dispose();
|
||
|
||
System.Console.WriteLine($"[Manager] 设备 {id} 已彻底移除");
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region --- 3. 生命周期控制 (Engine Lifecycle) ---
|
||
|
||
/// <summary>
|
||
/// 启动视频管理引擎,初始化SDK并启动协调器自愈循环
|
||
/// </summary>
|
||
public async Task StartAsync()
|
||
{
|
||
// 防护:已销毁则抛出异常
|
||
if (_isDisposed) throw new System.ObjectDisposedException(nameof(CameraManager));
|
||
// 防护:避免重复启动
|
||
if (_isEngineStarted) return;
|
||
|
||
// 1. 全局驱动环境预初始化:初始化厂商 SDK 运行环境
|
||
HikSdkManager.Initialize();
|
||
|
||
// 不要运行,手动运行
|
||
//// 2. 激活现有设备池中所有设备的“运行意图”,触发设备连接流程
|
||
//foreach (var source in _cameraPool.Values)
|
||
//{
|
||
// source.IsRunning = true;
|
||
//}
|
||
|
||
// 标记引擎启动状态,后续新增设备自动激活
|
||
_isEngineStarted = true;
|
||
|
||
// 3. 启动协调器后台自愈循环(标记为 LongRunning 提升调度优先级)
|
||
_ = Task.Factory.StartNew(
|
||
() => _coordinator.RunCoordinationLoopAsync(_globalCts.Token),
|
||
_globalCts.Token,
|
||
TaskCreationOptions.LongRunning,
|
||
TaskScheduler.Default);
|
||
|
||
System.Console.WriteLine($"[CameraManager] 引擎启动成功,当前管理 {_cameraPool.Count} 路相机设备。");
|
||
await Task.CompletedTask;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取当前所有相机的全局状态简报
|
||
/// </summary>
|
||
/// <returns>包含设备ID、IP、运行状态的元组集合</returns>
|
||
public IEnumerable<(long Id, string Ip, VideoSourceStatus Status)> GetGlobalStatus()
|
||
{
|
||
return _cameraPool.Values.Select(v => (v.Id, v.Config.IpAddress, v.Status));
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region --- 4. 监控数据采集 (Telemetry Collection) ---
|
||
|
||
/// <summary>
|
||
/// 获取所有相机的健康度报告
|
||
/// </summary>
|
||
/// <returns>相机健康度报告集合</returns>
|
||
public IEnumerable<CameraHealthReport> GetDetailedTelemetry()
|
||
{
|
||
return _cameraPool.Values.Select(cam => new CameraHealthReport
|
||
{
|
||
DeviceId = cam.Id,
|
||
Ip = cam.Config.IpAddress,
|
||
Status = cam.Status.ToString(),
|
||
LastError = cam.Status == VideoSourceStatus.Faulted ? "设备故障或网络中断" : "运行正常"
|
||
// 扩展:可补充 RealFps/DropFrames/ReconnectCount 等指标
|
||
});
|
||
}
|
||
|
||
/// <summary>
|
||
/// [新增] 获取全量相机实时遥测数据快照
|
||
/// 用于 WebAPI 实时监控大屏展示
|
||
/// </summary>
|
||
/// <returns>相机遥测数据快照集合</returns>
|
||
public IEnumerable<CameraTelemetryInfo> GetTelemetrySnapshot()
|
||
{
|
||
// 立即物化列表,防止枚举过程中集合被修改导致异常
|
||
return _cameraPool.Values.Select(cam =>
|
||
{
|
||
// 健康度评分算法(示例):基于设备状态与实时帧率综合判定
|
||
int healthScore = 100;
|
||
if (cam.Status == VideoSourceStatus.Faulted)
|
||
healthScore = 0;
|
||
else if (cam.Status == VideoSourceStatus.Reconnecting)
|
||
healthScore = 60;
|
||
else if (cam.RealFps < 1.0 && cam.Status == VideoSourceStatus.Playing)
|
||
healthScore = 40; // 有连接状态但无有效流
|
||
|
||
return new CameraTelemetryInfo
|
||
{
|
||
DeviceId = cam.Id,
|
||
Name = cam.Config.Name,
|
||
IpAddress = cam.Config.IpAddress,
|
||
Status = cam.Status.ToString(),
|
||
IsOnline = cam.IsPhysicalOnline,
|
||
Fps = cam.RealFps,
|
||
Bitrate = cam.RealBitrate, // [新增] 映射基类属性
|
||
TotalFrames = cam.TotalFrames,
|
||
HealthScore = healthScore,
|
||
LastErrorMessage = cam.Status == VideoSourceStatus.Faulted ? "设备故障或网络中断" : null,
|
||
Timestamp = System.DateTime.Now,
|
||
// [新增] 映射分辨率
|
||
Width = cam.Width,
|
||
Height = cam.Height,
|
||
};
|
||
}).ToList();
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region --- 5. 配置热更新 (Config Hot Update) ---
|
||
|
||
/// <summary>
|
||
/// 智能更新设备配置 (含冷热分离逻辑)
|
||
/// </summary>
|
||
/// <param name="deviceId">设备唯一标识</param>
|
||
/// <param name="dto">配置更新传输对象</param>
|
||
/// <exception cref="KeyNotFoundException">设备不存在时抛出</exception>
|
||
public async Task UpdateDeviceConfigAsync(long deviceId, DeviceUpdateDto dto)
|
||
{
|
||
if (!_cameraPool.TryGetValue(deviceId, out var device))
|
||
throw new KeyNotFoundException($"设备 {deviceId} 不存在");
|
||
|
||
// 1. 审计
|
||
device.AddAuditLog("收到配置更新请求");
|
||
|
||
// 2. 创建副本进行对比
|
||
var oldConfig = device.Config;
|
||
var newConfig = oldConfig.DeepCopy();
|
||
|
||
// 3. 映射 DTO 值 (仅当不为空时修改)
|
||
if (dto.IpAddress != null) newConfig.IpAddress = dto.IpAddress;
|
||
if (dto.Port != null) newConfig.Port = dto.Port.Value;
|
||
if (dto.Username != null) newConfig.Username = dto.Username;
|
||
if (dto.Password != null) newConfig.Password = dto.Password;
|
||
if (dto.ChannelIndex != null) newConfig.ChannelIndex = dto.ChannelIndex.Value;
|
||
if (dto.StreamType != null) newConfig.StreamType = dto.StreamType.Value;
|
||
if (dto.Name != null) newConfig.Name = dto.Name;
|
||
if (dto.RenderHandle != null) newConfig.RenderHandle = (System.IntPtr)dto.RenderHandle.Value;
|
||
|
||
// 4. 判定冷热更新
|
||
// 核心参数变更 -> 冷重启
|
||
bool needColdRestart =
|
||
newConfig.IpAddress != oldConfig.IpAddress ||
|
||
newConfig.Port != oldConfig.Port ||
|
||
newConfig.Username != oldConfig.Username ||
|
||
newConfig.Password != oldConfig.Password ||
|
||
newConfig.ChannelIndex != oldConfig.ChannelIndex ||
|
||
newConfig.Brand != oldConfig.Brand;
|
||
|
||
if (needColdRestart)
|
||
{
|
||
device.AddAuditLog($"检测到核心参数变更,执行冷重启 (Reboot)");
|
||
|
||
// 记录之前的运行状态
|
||
bool wasRunning = device.IsRunning;
|
||
|
||
// A. 彻底停止
|
||
if (device.IsOnline) await device.StopAsync();
|
||
|
||
// B. 写入新配置
|
||
device.UpdateConfig(newConfig);
|
||
|
||
// C. 如果之前是运行意图,则自动重启连接
|
||
if (wasRunning) await device.StartAsync();
|
||
}
|
||
else
|
||
{
|
||
device.AddAuditLog($"检测到运行时参数变更,执行热更新 (HotSwap)");
|
||
|
||
// A. 更新配置数据
|
||
device.UpdateConfig(newConfig);
|
||
|
||
// B. 在线应用策略 (无需断线)
|
||
if (device.IsOnline)
|
||
{
|
||
var options = new DynamicStreamOptions
|
||
{
|
||
StreamType = dto.StreamType,
|
||
RenderHandle = dto.RenderHandle.HasValue ? (System.IntPtr)dto.RenderHandle : null
|
||
};
|
||
// 触发驱动层的 OnApplyOptions
|
||
device.ApplyOptions(options);
|
||
}
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region --- 6. 资源清理 (Disposal) ---
|
||
|
||
/// <summary>
|
||
/// 同步销毁:内部调用异步销毁逻辑,等待销毁完成
|
||
/// </summary>
|
||
public void Dispose() => DisposeAsync().AsTask().GetAwaiter().GetResult();
|
||
|
||
/// <summary>
|
||
/// [修复 Bug L & Bug γ] 异步执行全局资源清理
|
||
/// 严格遵循销毁顺序:停止任务 → 销毁设备 → 卸载SDK,防止非托管内存泄漏
|
||
/// </summary>
|
||
public async ValueTask DisposeAsync()
|
||
{
|
||
// 防护:避免重复销毁
|
||
if (_isDisposed) return;
|
||
// 标记为已销毁,禁止后续操作
|
||
_isDisposed = true;
|
||
_isEngineStarted = false;
|
||
|
||
try
|
||
{
|
||
// 1. 发送全局取消信号,立即停止协调器所有后台扫描任务
|
||
_globalCts.Cancel();
|
||
|
||
// 2. [Fix Bug L] 锁定设备池快照并清空,防止并发修改导致异常
|
||
var devices = _cameraPool.Values.ToArray();
|
||
_cameraPool.Clear();
|
||
|
||
// 3. 并行销毁所有相机设备,释放设备持有的非托管资源
|
||
var disposeTasks = devices.Select(async device =>
|
||
{
|
||
try { await device.DisposeAsync(); }
|
||
catch { /* 隔离单个设备销毁异常,不影响其他设备 */ }
|
||
});
|
||
await Task.WhenAll(disposeTasks);
|
||
|
||
// 4. [Fix Bug γ: 二次伤害] 彻底卸载全局 SDK 环境
|
||
// 加 try-catch 防护极端场景(如进程强制终止时 SDK 已被系统回收)
|
||
try
|
||
{
|
||
HikSdkManager.Uninitialize();
|
||
}
|
||
catch
|
||
{
|
||
// 忽略卸载异常,保证销毁流程正常结束
|
||
}
|
||
}
|
||
finally
|
||
{
|
||
// 释放取消令牌源资源
|
||
_globalCts.Dispose();
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
/// <summary>
|
||
/// 更新设备配置(热重载)
|
||
/// 流程:停止旧设备 -> 释放资源 -> 创建新设备 -> 替换引用 -> (可选)自动重启
|
||
/// </summary>
|
||
public async Task UpdateDeviceAsync(int id, VideoSourceConfig newConfig)
|
||
{
|
||
// 1. 检查设备是否存在
|
||
if (!_cameraPool.TryGetValue(id, out var oldDevice))
|
||
{
|
||
throw new KeyNotFoundException($"设备 #{id} 不存在");
|
||
}
|
||
|
||
// 2. 捕获旧状态(用于决定是否需要自动重启新设备)
|
||
// 如果旧设备正在运行或尝试连接中,我们在更新后应该尝试恢复它
|
||
bool wasRunning = oldDevice.IsRunning ||
|
||
oldDevice.Status == VideoSourceStatus.Playing ||
|
||
oldDevice.Status == VideoSourceStatus.Connecting;
|
||
|
||
// 获取旧的流控需求(如果希望更新配置后,之前的订阅依然生效,需要把需求搬过去)
|
||
// 这里简化处理:更新配置通常意味着环境变了,我们选择清空旧订阅,让前端重新下发,或者你可以手动拷贝
|
||
// var oldRequirements = oldDevice.Controller.GetCurrentRequirements();
|
||
|
||
Console.WriteLine($"[Manager] 正在更新设备 #{id},配置变更中...");
|
||
|
||
// 3. 【关键步骤】优雅停止并销毁旧实例
|
||
// 必须先 Stop 再 Dispose,确保 SDK 句柄(如 lUserId, lRealPlayHandle)被释放
|
||
try
|
||
{
|
||
await oldDevice.StopAsync(); // 停止取流
|
||
await oldDevice.DisposeAsync(); // 注销登录、释放非托管资源
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
Console.WriteLine($"[Manager] 销毁旧设备时警告: {ex.Message}");
|
||
// 继续执行,不要因为旧设备销毁失败阻断新配置的应用
|
||
}
|
||
|
||
// 4. 使用新配置创建新实例
|
||
// 建议将创建逻辑提取为私有方法 CreateDeviceInstance,避免与 AddDevice 代码重复
|
||
var newDevice = CreateDeviceInstance(newConfig);
|
||
|
||
// 5. 原子替换 (ConcurrentDictionary 的索引器赋值是线程安全的)
|
||
_cameraPool[id] = newDevice;
|
||
|
||
Console.WriteLine($"[Manager] 设备 #{id} 实例已重建。");
|
||
|
||
// 6. 状态恢复
|
||
if (wasRunning)
|
||
{
|
||
Console.WriteLine($"[Manager] 检测到设备 #{id} 之前为运行状态,正在自动重启...");
|
||
// 不等待 StartAsync 完成,避免阻塞 HTTP 请求太久
|
||
// 如果希望前端看到转圈直到启动完成,则加上 await
|
||
await newDevice.StartAsync();
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// [辅助工厂方法] 根据配置创建具体的驱动实例
|
||
/// 请确保你的 AddDevice 方法也改为调用此方法,减少重复代码
|
||
/// </summary>
|
||
private BaseVideoSource CreateDeviceInstance(VideoSourceConfig config)
|
||
{
|
||
return config.Brand switch
|
||
{
|
||
DeviceBrand.HikVision => new HikVideoSource(config),
|
||
// 如果你有大华或其他品牌,在这里扩展
|
||
// DeviceBrand.Dahua => new DahuaVideoSource(config),
|
||
_ => throw new NotSupportedException($"不支持的设备品牌: {config.Brand}")
|
||
};
|
||
}
|
||
} |