added exception middleware to server for logging

Oqtane.Server/Extensions/ApplicationBuilderExtensions.cs

@@ -44,5 +44,9 @@ namespace Oqtane.Extensions
 
         public static IApplicationBuilder UseJwtAuthorization(this IApplicationBuilder builder)
           => builder.UseMiddleware<JwtMiddleware>();
+
+        public static IApplicationBuilder UseExceptionMiddleWare(this IApplicationBuilder builder)
+          => builder.UseMiddleware<ExceptionMiddleware>();
+
     }
 }

Oqtane.Server/Infrastructure/Middleware/ExceptionMiddleware.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection;
+using Oqtane.Enums;
+using Oqtane.Models;
+using Oqtane.Shared;
+
+namespace Oqtane.Infrastructure
+{
+    internal class ExceptionMiddleware
+    {
+        private readonly RequestDelegate _next;
+
+        public ExceptionMiddleware(RequestDelegate next)
+        {
+            _next = next;
+        }
+
+        public async Task Invoke(HttpContext context, IServiceProvider provider)
+        {
+            try
+            {
+                await _next(context);
+            }
+            catch (Exception exception)
+            {
+                var _logger = provider.GetRequiredService<ILogManager>();
+                var endPoint = context.GetEndpoint()?.DisplayName;
+                var contextAlias = context.Items.FirstOrDefault(i => i.Key.ToString() == "Alias");
+                Alias alias;
+                int siteId = -1;
+                var defaultVal = default(KeyValuePair<int, string>);
+                if (!contextAlias.Equals(defaultVal))
+                {
+                    alias = contextAlias.Value as Alias;
+                    siteId = alias.SiteId;
+                }
+                _logger.Log(siteId, LogLevel.Error, endPoint, LogFunction.Other, exception, exception.Message, context.User?.Identity.Name);
+            }
+        }
+    }
+}

Oqtane.Server/Startup.cs

@@ -199,6 +199,7 @@ namespace Oqtane
 
             app.UseHttpsRedirection();
             app.UseStaticFiles();
+            app.UseExceptionMiddleWare();
             app.UseTenantResolution();
             app.UseJwtAuthorization();
             app.UseRouting();