SaveChangesAsync() from Integration events

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderPaymentFailedIntegrationEventHandler.cs

@@ -20,6 +20,8 @@
             var orderToUpdate = await _orderRepository.GetAsync(@event.OrderId);
 
             orderToUpdate.SetCancelledStatus();
+
+            await _orderRepository.UnitOfWork.SaveEntitiesAsync();
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderPaymentSuccededIntegrationEventHandler.cs

@@ -20,6 +20,8 @@
             var orderToUpdate = await _orderRepository.GetAsync(@event.OrderId);
 
             orderToUpdate.SetPaidStatus();
+
+            await _orderRepository.UnitOfWork.SaveEntitiesAsync();
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderStockConfirmedIntegrationEventHandler.cs

@@ -20,6 +20,8 @@
             var orderToUpdate = await _orderRepository.GetAsync(@event.OrderId);
 
             orderToUpdate.SetStockConfirmedStatus();
+
+            await _orderRepository.UnitOfWork.SaveEntitiesAsync();
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderStockNotConfirmedIntegrationEventHandler.cs

@@ -26,6 +26,8 @@ namespace Ordering.API.Application.IntegrationEvents.EventHandling
                 .Select(c => c.ProductId);
 
             orderToUpdate.SetStockConfirmedStatus(orderStockNotConfirmedItems);
+
+            await _orderRepository.UnitOfWork.SaveChangesAsync();
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/Sagas/OrderProcessSaga.cs

@@ -43,15 +43,14 @@ namespace Ordering.API.Application.Sagas
         /// period has completed.
         /// </param>
         /// <returns></returns>
-        public async Task Handle(ConfirmGracePeriodCommandMsg @event)
+        public async Task Handle(ConfirmGracePeriodCommandMsg command)
         {
-            var orderSaga = FindSagaById(@event.OrderId);
+            var orderSaga = FindSagaById(command.OrderId);
             CheckValidSagaId(orderSaga);
 
             if (orderSaga.OrderStatus != OrderStatus.Cancelled)
             {
                 orderSaga.SetAwaitingValidationStatus();
-
                 await SaveChangesAsync();
             }
         }

src/Services/Ordering/Ordering.Domain/AggregatesModel/OrderAggregate/Order.cs

@@ -30,7 +30,7 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.O
         // but only through the method OrderAggrergateRoot.AddOrderItem() which includes behaviour.
         private readonly List<OrderItem> _orderItems;
 
-        public IEnumerable<OrderItem> OrderItems => _orderItems.AsReadOnly();
+        public IReadOnlyList<OrderItem> OrderItems => _orderItems;
         // Using List<>.AsReadOnly() 
         // This will create a read only wrapper around the private list so is protected against "external updates".
         // It's much cheaper than .ToList() because it will not have to copy all items in a new collection. (Just one heap alloc for the wrapper instance)
@@ -107,9 +107,9 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.O
                 StatusChangeException();
             }  
 
-            _orderStatusId = OrderStatus.AwaitingValidation.Id;
+            AddDomainEvent(new OrderStatusChangedToAwaitingValidationDomainEvent(Id, _orderItems));
 
-            AddDomainEvent(new OrderStatusChangedToAwaitingValidationDomainEvent(Id, OrderItems));
+            _orderStatusId = OrderStatus.AwaitingValidation.Id;
         }
 
         public void SetStockConfirmedStatus(IEnumerable<int> orderStockNotConfirmedItems = null)
@@ -121,15 +121,14 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.O
 
             if (orderStockNotConfirmedItems is null)
             {
-                OrderStatus = OrderStatus.StockConfirmed;
-
-                _description = "All the items were confirmed with available stock.";
-
                 AddDomainEvent(new OrderStatusChangedToStockConfirmedDomainEvent(Id));
+
+                _orderStatusId = OrderStatus.StockConfirmed.Id;
+                _description = "All the items were confirmed with available stock.";
             }
             else
             {
-                OrderStatus = OrderStatus.Cancelled;
+                _orderStatusId = OrderStatus.Cancelled.Id;
 
                 var itemsStockNotConfirmedProductNames = OrderItems
                     .Where(c => orderStockNotConfirmedItems.Contains(c.ProductId))
@@ -147,10 +146,10 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.O
                 StatusChangeException();
             }
 
+            AddDomainEvent(new OrderStatusChangedToPaidDomainEvent(Id, OrderItems));
+
             _orderStatusId = OrderStatus.Paid.Id;
             _description = "The payment was performed at a simulated \"American Bank checking bank account endinf on XX35071\"";
-
-            AddDomainEvent(new OrderStatusChangedToPaidDomainEvent(Id, OrderItems));
         }
 
         public void SetShippedStatus()
@@ -162,8 +161,6 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.O
 
             _orderStatusId = OrderStatus.Shipped.Id;
             _description = "";
-
-            //Call Domain Event
         }
 
         public void SetCancelledStatus()