阶段性批量提交

SHH.CameraService/ParentProcessSentinel.cs

@@ -0,0 +1,79 @@
+using System.Diagnostics;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using SHH.CameraSdk;
+
+namespace SHH.CameraService;
+
+public class ParentProcessSentinel : BackgroundService
+{
+    private readonly ServiceConfig _config;
+    private readonly IHostApplicationLifetime _lifetime;
+    private readonly ILogger<ParentProcessSentinel> _logger;
+
+    public ParentProcessSentinel(
+        ServiceConfig config,
+        IHostApplicationLifetime lifetime,
+        ILogger<ParentProcessSentinel> logger)
+    {
+        _config = config;
+        _lifetime = lifetime;
+        _logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        int pid = _config.ParentPid;
+
+        // 如果 PID 为 0 或负数，说明不需要守护（可能是手动启动调试）
+        if (pid <= 0)
+        {
+            _logger.LogInformation("未指定有效的父进程 PID，守护模式已禁用。");
+            return;
+        }
+
+        _logger.LogInformation($"父进程守护已启动，正在监控 PID: {pid}");
+
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            if (!IsParentRunning(pid))
+            {
+                _logger.LogWarning($"[ALERT] 检测到父进程 (PID:{pid}) 已退出！正在终止当前服务...");
+
+                // 触发程序优雅退出
+                _lifetime.StopApplication();
+
+                // 强制跳出循环
+                break;
+            }
+
+            // 每 2 秒检查一次，避免 CPU 浪费
+            await Task.Delay(2000, stoppingToken);
+        }
+    }
+
+    private bool IsParentRunning(int pid)
+    {
+        try
+        {
+            // 尝试获取进程对象
+            var process = Process.GetProcessById(pid);
+
+            // 检查是否已退出
+            if (process.HasExited) return false;
+
+            return true;
+        }
+        catch (ArgumentException)
+        {
+            // GetProcessById 在找不到 PID 时会抛出 ArgumentException
+            // 说明进程已经不存在了
+            return false;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "检查父进程状态时发生未知错误，默认为存活");
+            return true; // 发生未知错误时，保守起见认为它还活着
+        }
+    }
+}