#23: UOW Action filter should be able to work without middleware too.

src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/Uow/AbpUnitOfWorkMiddleware.cs

@@ -18,7 +18,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Uow
             using (var uow = unitOfWorkManager.Reserve(AbpUowActionFilter.UnitOfWorkReservationName))
             {
                 await _next(httpContext);
-                await uow.CompleteAsync();
+                await uow.CompleteAsync(httpContext.RequestAborted);
             }
         }
     }

src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/Uow/AbpUowActionFilter.cs

@@ -18,8 +18,28 @@ namespace Volo.Abp.AspNetCore.Mvc.Uow
 
         public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
         {
-            _unitOfWorkManager.BeginReserved(UnitOfWorkReservationName);
-            await next();
+            if (!context.ActionDescriptor.IsControllerAction())
+            {
+                await next();
+                return;
+            }
+
+            if (_unitOfWorkManager.TryBeginReserved(UnitOfWorkReservationName))
+            {
+                await next();
+                return;
+            }
+
+            //TODO: Check if disabled. Get and apply attributes to control UOW.
+
+            using (var uow = _unitOfWorkManager.Begin())
+            {
+                var result = await next();
+                if (result.Exception == null || result.ExceptionHandled)
+                {
+                    await uow.CompleteAsync(context.HttpContext.RequestAborted);
+                }
+            }
         }
     }
 }

src/Volo.Abp/Volo/Abp/Uow/IUnitOfWorkManager.cs

@@ -10,7 +10,8 @@ namespace Volo.Abp.Uow
         [NotNull]
         IBasicUnitOfWork Begin([NotNull] UnitOfWorkStartOptions options);
 
-        [NotNull]
-        IBasicUnitOfWork BeginReserved([NotNull] string reservationName);
+        void BeginReserved([NotNull] string reservationName);
+
+        bool TryBeginReserved([NotNull] string reservationName);
     }
 }

src/Volo.Abp/Volo/Abp/Uow/UnitOfWorkManager.cs

@@ -35,7 +35,15 @@ namespace Volo.Abp.Uow
             return CreateUnitOfWork(options);
         }
 
-        public IBasicUnitOfWork BeginReserved(string reservationName)
+        public void BeginReserved(string reservationName)
+        {
+            if (!TryBeginReserved(reservationName))
+            {
+                throw new AbpException($"Could not find a reserved unit of work with reservation name: {reservationName}");
+            }
+        }
+
+        public bool TryBeginReserved(string reservationName)
         {
             Check.NotNull(reservationName, nameof(reservationName));
 
@@ -49,11 +57,11 @@ namespace Volo.Abp.Uow
 
             if (uow == null)
             {
-                throw new AbpException($"Could not find a reserved unit of work with reservation name: {reservationName}");
+                return false;
             }
 
             uow.IsReserved = false;
-            return uow;
+            return true;
         }
 
         private IUnitOfWork GetCurrentUnitOfWork()

test/Volo.Abp.Tests/Volo/Abp/Uow/UnitOfWork_Ambient_Scope_Tests.cs

@@ -62,10 +62,9 @@ namespace Volo.Abp.Uow
 
                 _unitOfWorkManager.Current.ShouldBeNull();
 
-                var reserverUow = _unitOfWorkManager.BeginReserved("Reservation1");
+                _unitOfWorkManager.BeginReserved("Reservation1");
 
                 _unitOfWorkManager.Current.ShouldNotBeNull();
-                _unitOfWorkManager.Current.Id.ShouldBe(reserverUow.Id);
                 _unitOfWorkManager.Current.Id.ShouldBe(uow1.Id);
 
                 await uow1.CompleteAsync();