Added some logging when app returns 404.

backend/src/Squidex.Web/Pipeline/AppResolver.cs

@@ -13,10 +13,12 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.Extensions.DependencyInjection;
 using Squidex.Domain.Apps.Entities;
 using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Security;
+using Squidex.Log;
 using Squidex.Shared;
 using Squidex.Shared.Identity;
 
@@ -47,6 +49,13 @@ namespace Squidex.Web.Pipeline
 
                 if (app == null)
                 {
+                    var log = context.HttpContext.RequestServices?.GetService<ISemanticLog>();
+
+                    log?.LogWarning(w => w
+                        .WriteProperty("message", "Cannot find app with the given name.")
+                        .WriteProperty("appId", "404")
+                        .WriteProperty("appName", appName));
+
                     context.Result = new NotFoundResult();
                     return;
                 }
@@ -88,6 +97,13 @@ namespace Squidex.Web.Pipeline
                     }
                     else
                     {
+                        var log = context.HttpContext.RequestServices?.GetService<ISemanticLog>();
+
+                        log?.LogWarning(w => w
+                            .WriteProperty("message", "Authenticated user has no permission to access the app.")
+                            .WriteProperty("appId", app.Id.ToString())
+                            .WriteProperty("appName", appName));
+
                         context.Result = new NotFoundResult();
                     }