Refactoring of idempotent elements and logic.

src/BuildingBlocks/EventBus/EventBus/Events/IntegrationEvent.cs

@@ -9,8 +9,10 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events
         public IntegrationEvent()
         {
             Id = Guid.NewGuid();
+            CreationDate = DateTime.UtcNow;
         }
 
         public Guid Id  { get; }
+        public DateTime CreationDate { get; }
     }
 }

src/BuildingBlocks/EventBus/IntegrationEventLogEF/IntegrationEventLogEntry.cs

@@ -12,7 +12,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF
         public IntegrationEventLogEntry(IntegrationEvent @event)
         {
             EventId = @event.Id;
-            CreationTime = DateTime.UtcNow;
+            CreationTime = @event.CreationDate;
             EventTypeName = @event.GetType().FullName;
             Content = JsonConvert.SerializeObject(@event);
             State = EventStateEnum.NotPublished;

src/Services/Basket/Basket.API/IntegrationEvents/EventHandling/ProductPriceChangedIntegrationEventHandler.cs

@@ -20,18 +20,18 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API.IntegrationEvents.Even
             foreach (var id in userIds)
             {
                 var basket = await _repository.GetBasket(id);
-                await UpdatePriceInBasketItems(@event.ProductId, @event.NewPrice, basket);                      
+                await UpdatePriceInBasketItems(@event.ProductId, @event.NewPrice, @event.OldPrice, basket);                      
             }
         }
 
-        private async Task UpdatePriceInBasketItems(int productId, decimal newPrice, CustomerBasket basket)
+        private async Task UpdatePriceInBasketItems(int productId, decimal newPrice, decimal oldPrice, CustomerBasket basket)
         {
             var itemsToUpdate = basket?.Items?.Where(x => int.Parse(x.ProductId) == productId).ToList();
             if (itemsToUpdate != null)
             {
                 foreach (var item in itemsToUpdate)
                 {
-                    if(item.UnitPrice != newPrice)
+                    if(item.UnitPrice == oldPrice)
                     { 
                         var originalPrice = item.UnitPrice;
                         item.UnitPrice = newPrice;

src/Services/Ordering/Ordering.API/Application/Commands/CreateOrderCommandHandler.cs

@@ -3,7 +3,7 @@
     using Domain.AggregatesModel.OrderAggregate;
     using MediatR;
     using Microsoft.eShopOnContainers.Services.Ordering.API.Infrastructure.Services;
-    using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Repositories;
+    using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
     using System;
     using System.Threading.Tasks;
 

src/Services/Ordering/Ordering.API/Application/Commands/IdentifierCommandHandler.cs

@@ -1,8 +1,5 @@
 using MediatR;
-using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Repositories;
-using System;
-using System.Collections.Generic;
-using System.Linq;
+using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
 using System.Threading.Tasks;
 
 namespace Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands

src/Services/Ordering/Ordering.API/Infrastructure/AutofacModules/ApplicationModule.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Queries;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.BuyerAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
+using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Repositories;
 
 namespace Microsoft.eShopOnContainers.Services.Ordering.API.Infrastructure.AutofacModules

src/Services/Ordering/Ordering.Infrastructure/Idempotency/IRequestManager.cs

@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Repositories
+namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency
 {
     public interface IRequestManager
     {

src/Services/Ordering/Ordering.Infrastructure/Idempotency/RequestManager.cs

@@ -5,7 +5,7 @@ using System.Collections.Generic;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Repositories
+namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency
 {
     public class RequestManager : IRequestManager
     {

test/Services/UnitTest/Ordering/Application/IdentifierCommandHandlerTest.cs

@@ -6,7 +6,7 @@ namespace UnitTest.Ordering.Application
 {
     using MediatR;
     using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
-    using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Repositories;
+    using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
     using Moq;
     using System.Collections;
     using System.Collections.Generic;

test/Services/UnitTest/Ordering/Domain/BuyerAggregateTest.cs

@@ -1,4 +1,5 @@
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.BuyerAggregate;
+using Ordering.Domain.Exceptions;
 using System;
 using Xunit;
 
@@ -82,7 +83,7 @@ public class BuyerAggregateTest
         var expiration = DateTime.Now.AddYears(-1);        
 
         //Act - Assert
-        Assert.Throws<ArgumentException>(() => new PaymentMethod(cardTypeId, alias, cardNumber, securityNumber, cardHolderName, expiration));
+        Assert.Throws<OrderingDomainException>(() => new PaymentMethod(cardTypeId, alias, cardNumber, securityNumber, cardHolderName, expiration));
     }
 
     [Fact]

test/Services/UnitTest/Ordering/Domain/OrderAggregateTest.cs

@@ -1,5 +1,6 @@
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Ordering.Domain.Events;
+using Ordering.Domain.Exceptions;
 using System;
 using Xunit;
 
@@ -38,7 +39,7 @@ public class OrderAggregateTest
         var units = -1;
 
         //Act - Assert
-        Assert.Throws<ArgumentNullException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
+        Assert.Throws<OrderingDomainException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
     }
 
     [Fact]
@@ -53,7 +54,7 @@ public class OrderAggregateTest
         var units = 1;
 
         //Act - Assert
-        Assert.Throws<ArgumentException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
+        Assert.Throws<OrderingDomainException>(() => new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units));
     }
 
     [Fact]
@@ -71,7 +72,7 @@ public class OrderAggregateTest
         var fakeOrderItem = new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units);
 
         //Assert
-        Assert.Throws<ArgumentException>(() => fakeOrderItem.SetNewDiscount(-1));
+        Assert.Throws<OrderingDomainException>(() => fakeOrderItem.SetNewDiscount(-1));
     }
 
     [Fact]
@@ -89,7 +90,7 @@ public class OrderAggregateTest
         var fakeOrderItem = new OrderItem(productId, productName, unitPrice, discount, pictureUrl, units);
 
         //Assert
-        Assert.Throws<ArgumentException>(() => fakeOrderItem.AddUnits(-1));
+        Assert.Throws<OrderingDomainException>(() => fakeOrderItem.AddUnits(-1));
     }
 
     [Fact]