Add less intrusive logging for missing articles.

Author: nzbdav-dev

…iddlewares/RequestCancelledMiddleware.cs …ckend/Middlewares/ExceptionMiddleware.csbackend/Middlewares/RequestCancelledMiddleware.cs renamed to backend/Middlewares/ExceptionMiddleware.cs backend/Middlewares/RequestCancelledMiddleware.cs renamed to backend/Middlewares/ExceptionMiddleware.cs

@@ -1,8 +1,10 @@
 using Microsoft.AspNetCore.Http;
+using NzbWebDAV.Exceptions;
+using Serilog;
 
 namespace NzbWebDAV.Middlewares;
 
-public class RequestCancelledMiddleware(RequestDelegate next)
+public class ExceptionMiddleware(RequestDelegate next)
 {
     public async Task InvokeAsync(HttpContext context)
     {
@@ -20,5 +22,15 @@ public async Task InvokeAsync(HttpContext context)
                 await context.Response.WriteAsync("Client closed request.");
             }
         }
+        catch (UsenetArticleNotFoundException e)
+        {
+            if (!context.Response.HasStarted)
+            {
+                context.Response.Clear();
+                context.Response.StatusCode = 404;
+            }
+
+            Log.Warning($"File `{context.Request.Path}` has missing articles: {e.Message}");
+        }
     }
 }

backend/Program.cs

@@ -86,7 +86,7 @@ static async Task Main(string[] args)
         // run
         var app = builder.Build();
         app.UseSerilogRequestLogging();
-        app.UseMiddleware<RequestCancelledMiddleware>();
+        app.UseMiddleware<ExceptionMiddleware>();
         app.UseAuthentication();
         app.MapControllers();
         app.UseNWebDav();