feat(shared-web): add shared swagger and tracing utilities

src/Core/TakeoutSaaS.Shared.Web/Middleware/RequestLoggingMiddleware.cs

@@ -0,0 +1,43 @@
+using System.Diagnostics;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Shared.Abstractions.Diagnostics;
+
+namespace TakeoutSaaS.Shared.Web.Middleware;
+
+/// <summary>
+/// 基础请求日志（方法、路径、耗时、状态码、TraceId）。
+/// </summary>
+public sealed class RequestLoggingMiddleware
+{
+    private readonly RequestDelegate _next;
+    private readonly ILogger<RequestLoggingMiddleware> _logger;
+
+    public RequestLoggingMiddleware(RequestDelegate next, ILogger<RequestLoggingMiddleware> logger)
+    {
+        _next = next;
+        _logger = logger;
+    }
+
+    public async Task InvokeAsync(HttpContext context)
+    {
+        var stopwatch = Stopwatch.StartNew();
+        try
+        {
+            await _next(context);
+        }
+        finally
+        {
+            stopwatch.Stop();
+            var traceId = TraceContext.TraceId ?? context.TraceIdentifier;
+            _logger.LogInformation(
+                "HTTP {Method} {Path} => {StatusCode} ({Elapsed} ms) TraceId:{TraceId}",
+                context.Request.Method,
+                context.Request.Path,
+                context.Response.StatusCode,
+                stopwatch.Elapsed.TotalMilliseconds,
+                traceId);
+        }
+    }
+}