Inventory actor/grain delay saving to the persistence

modules/EasyAbp.EShop.Products/src/EasyAbp.EShop.Products.Domain.Shared/EasyAbp/EShop/Products/ProductInventories/IProductInventoryProvider.cs

@@ -12,8 +12,10 @@ namespace EasyAbp.EShop.Products.ProductInventories
 
         Task<Dictionary<Guid, InventoryDataModel>> GetSkuIdInventoryDataMappingAsync(IList<InventoryQueryModel> models);
 
-        Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity, bool decreaseSold);
+        Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity, bool decreaseSold,
+            bool isFlashSale = false);
 
-        Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold);
+        Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold,
+            bool isFlashSale = false);
     }
 }

modules/EasyAbp.EShop.Products/src/EasyAbp.EShop.Products.Domain/EasyAbp/EShop/Products/Products/DefaultProductInventoryProvider.cs

@@ -76,7 +76,7 @@ namespace EasyAbp.EShop.Products.Products
 
         [UnitOfWork(true)]
         public virtual async Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity,
-            bool decreaseSold)
+            bool decreaseSold, bool isFlashSale = false)
         {
             await using var handle = await _distributedLock.TryAcquireAsync(await GetLockKeyAsync(model), TimeSpan.FromSeconds(30));
 
@@ -94,7 +94,7 @@ namespace EasyAbp.EShop.Products.Products
 
         [UnitOfWork(true)]
         public virtual async Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity,
-            bool increaseSold)
+            bool increaseSold, bool isFlashSale = false)
         {
             await using var handle = await _distributedLock.TryAcquireAsync(await GetLockKeyAsync(model), TimeSpan.FromSeconds(30));
 

modules/EasyAbp.EShop.Products/src/EasyAbp.EShop.Products.Domain/EasyAbp/EShop/Products/Products/ProductManager.cs

@@ -259,8 +259,10 @@ namespace EasyAbp.EShop.Products.Products
         {
             var model = new InventoryQueryModel(product.TenantId, product.StoreId, product.Id, productSku.Id);
 
+            var isFlashSale = product.InventoryStrategy is InventoryStrategy.FlashSales;
+
             return await (await _productInventoryProviderResolver.GetAsync(product))
-                .TryIncreaseInventoryAsync(model, quantity, reduceSold);
+                .TryIncreaseInventoryAsync(model, quantity, reduceSold, isFlashSale);
         }
 
         public virtual async Task<bool> TryReduceInventoryAsync(Product product, ProductSku productSku, int quantity,
@@ -268,8 +270,10 @@ namespace EasyAbp.EShop.Products.Products
         {
             var model = new InventoryQueryModel(product.TenantId, product.StoreId, product.Id, productSku.Id);
 
+            var isFlashSale = product.InventoryStrategy is InventoryStrategy.FlashSales;
+
             return await (await _productInventoryProviderResolver.GetAsync(product))
-                .TryReduceInventoryAsync(model, quantity, increaseSold);
+                .TryReduceInventoryAsync(model, quantity, increaseSold, isFlashSale);
         }
 
         public virtual async Task<PriceDataModel> GetRealPriceAsync(Product product, ProductSku productSku)

modules/EasyAbp.EShop.Products/test/EasyAbp.EShop.Products.TestBase/FakeProductInventoryProvider.cs

@@ -34,10 +34,11 @@ public class FakeProductInventoryProvider : IProductInventoryProvider, ITransien
         return Task.FromResult(result);
     }
 
-    public Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity, bool decreaseSold)
+    public Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity, bool decreaseSold,
+        bool isFlashSale = false)
     {
         Model.Inventory++;
-        
+
         if (decreaseSold)
         {
             Model.Sold--;
@@ -46,10 +47,11 @@ public class FakeProductInventoryProvider : IProductInventoryProvider, ITransien
         return Task.FromResult(true);
     }
 
-    public Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold)
+    public Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold,
+        bool isFlashSale = false)
     {
         Model.Inventory--;
-        
+
         if (increaseSold)
         {
             Model.Sold++;

plugins/FlashSales/src/EasyAbp.EShop.Plugins.FlashSales.Application/EasyAbp/EShop/Products/Products/FlashSaleInventoryManager.cs

@@ -17,17 +17,17 @@ public class FlashSaleInventoryManager : IFlashSaleInventoryManager, ITransientD
         FlashSaleInventoryReducerAppService = flashSaleInventoryReducerAppService;
     }
 
-    public virtual async Task<bool> TryReduceInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
-        Guid productSkuId, int quantity, bool increaseSold)
+    public virtual async Task<bool> TryReduceInventoryAsync(Guid? tenantId, string providerName, Guid storeId,
+        Guid productId, Guid productSkuId, int quantity, bool increaseSold)
     {
-        return await FlashSaleInventoryReducerAppService.TryReduceAsync(
-            new ReduceInventoryInput(tenantId, providerName, storeId, productId, productSkuId, quantity, increaseSold));
+        return await FlashSaleInventoryReducerAppService.TryReduceAsync(new ReduceInventoryInput(
+                tenantId, providerName, storeId, productId, productSkuId, quantity, increaseSold));
     }
 
-    public virtual async Task<bool> TryRollBackInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
-        Guid productSkuId, int quantity, bool decreaseSold)
+    public virtual async Task<bool> TryRollBackInventoryAsync(Guid? tenantId, string providerName, Guid storeId,
+        Guid productId, Guid productSkuId, int quantity, bool decreaseSold)
     {
-        return await FlashSaleInventoryReducerAppService.TryIncreaseAsync
-            (new IncreaseInventoryInput(tenantId, providerName, storeId, productId, productSkuId, quantity, decreaseSold));
+        return await FlashSaleInventoryReducerAppService.TryIncreaseAsync(new IncreaseInventoryInput(
+            tenantId, providerName, storeId, productId, productSkuId, quantity, decreaseSold));
     }
-}
+}

plugins/FlashSales/src/EasyAbp.EShop.Products.Plugins.FlashSales.Abstractions/EasyAbp/Eshop/Products/Products/IFlashSaleInventoryManager.cs

@@ -5,7 +5,9 @@ namespace EasyAbp.Eshop.Products.Products;
 
 public interface IFlashSaleInventoryManager
 {
-    Task<bool> TryReduceInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId, Guid productSkuId, int quantity, bool increaseSold);
+    Task<bool> TryReduceInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
+        Guid productSkuId, int quantity, bool increaseSold);
 
-    Task<bool> TryRollBackInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId, Guid productSkuId, int quantity, bool decreaseSold);
-}
+    Task<bool> TryRollBackInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
+        Guid productSkuId, int quantity, bool decreaseSold);
+}

plugins/FlashSales/src/EasyAbp.EShop.Products.Plugins.FlashSales.Application/EasyAbp/EShop/Products/Products/LocalFlashSaleInventoryManager.cs

@@ -20,7 +20,7 @@ public class LocalFlashSaleInventoryManager : ILocalFlashSaleInventoryManager, I
     {
         var model = new InventoryQueryModel(tenantId, storeId, productId, productSkuId);
         return await (await ProductInventoryProviderResolver.GetAsync(providerName))
-            .TryReduceInventoryAsync(model, quantity, increaseSold);
+            .TryReduceInventoryAsync(model, quantity, increaseSold, true);
     }
 
     public virtual async Task<bool> TryRollBackInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
@@ -28,6 +28,6 @@ public class LocalFlashSaleInventoryManager : ILocalFlashSaleInventoryManager, I
     {
         var model = new InventoryQueryModel(tenantId, storeId, productId, productSkuId);
         return await (await ProductInventoryProviderResolver.GetAsync(providerName))
-            .TryIncreaseInventoryAsync(model, quantity, decreaseSold);
+            .TryIncreaseInventoryAsync(model, quantity, decreaseSold, true);
     }
 }

plugins/FlashSales/test/EasyAbp.EShop.Plugins.FlashSales.Application.Tests/EasyAbp/EShop/Products/Products/FakeFlashSaleInventoryManager.cs

@@ -13,15 +13,15 @@ public class FakeFlashSaleInventoryManager : IFlashSaleInventoryManager
         ShouldReduceSuccess = true;
     }
 
-    public Task<bool> TryReduceInventoryAsync(
-        Guid? tenantId, string providerName, Guid storeId, Guid productId, Guid productSkuId, int quantity, bool increaseSold)
+    public Task<bool> TryReduceInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
+        Guid productSkuId, int quantity, bool increaseSold)
     {
         return Task.FromResult(ShouldReduceSuccess);
     }
 
-    public Task<bool> TryRollBackInventoryAsync(
-        Guid? tenantId, string providerName, Guid storeId, Guid productId, Guid productSkuId, int quantity, bool decreaseSold)
+    public Task<bool> TryRollBackInventoryAsync(Guid? tenantId, string providerName, Guid storeId, Guid productId,
+        Guid productSkuId, int quantity, bool decreaseSold)
     {
         return Task.FromResult(true);
     }
-}
+}

plugins/Inventories/DaprActors/src/EasyAbp.EShop.Plugins.Inventories.DaprActors.Abstractions/EasyAbp/EShop/Plugins/Inventories/DaprActors/IInventoryActor.cs

@@ -7,7 +7,7 @@ public interface IInventoryActor : IActor
 {
     Task<InventoryStateModel> GetInventoryStateAsync();
 
-    Task IncreaseInventoryAsync(int quantity, bool decreaseSold);
+    Task IncreaseInventoryAsync(int quantity, bool decreaseSold, bool isFlashSale);
 
-    Task ReduceInventoryAsync(int quantity, bool increaseSold);
+    Task ReduceInventoryAsync(int quantity, bool increaseSold, bool isFlashSale);
 }

plugins/Inventories/DaprActors/src/EasyAbp.EShop.Plugins.Inventories.DaprActors/EasyAbp.EShop.Plugins.Inventories.DaprActors.csproj

@@ -12,6 +12,7 @@
     </ItemGroup>
 
     <ItemGroup>
+        <PackageReference Include="Volo.Abp.Timing" Version="$(AbpVersion)" />
         <PackageReference Include="Dapr.Actors" Version="$(DaprSdkVersion)" />
     </ItemGroup>
 

plugins/Inventories/DaprActors/src/EasyAbp.EShop.Plugins.Inventories.DaprActors/EasyAbp/EShop/Plugins/Inventories/DaprActors/EShopPluginsInventoriesDaprActorsModule.cs

@@ -1,8 +1,10 @@
 using Volo.Abp.Modularity;
+using Volo.Abp.Timing;
 
 namespace EasyAbp.EShop.Plugins.Inventories.DaprActors;
 
 [DependsOn(
+    typeof(AbpTimingModule),
     typeof(EShopPluginsInventoriesDaprActorsAbstractionsModule)
 )]
 public class EShopPluginsInventoriesDaprActorsModule : AbpModule

plugins/Inventories/DaprActors/src/EasyAbp.EShop.Plugins.Inventories.DaprActors/EasyAbp/EShop/Plugins/Inventories/DaprActors/InventoryActor.cs

@@ -1,6 +1,8 @@
+using System;
 using System.Threading.Tasks;
 using Dapr;
 using Dapr.Actors.Runtime;
+using Volo.Abp.Timing;
 
 namespace EasyAbp.EShop.Plugins.Inventories.DaprActors;
 
@@ -8,8 +10,13 @@ public class InventoryActor : Actor, IInventoryActor
 {
     public static string InventoryStateName { get; set; } = "i";
 
-    public InventoryActor(ActorHost host) : base(host)
+    protected DateTime? TimeToPersistInventory { get; set; }
+
+    protected IClock Clock { get; }
+
+    public InventoryActor(ActorHost host, IClock clock) : base(host)
     {
+        Clock = clock;
     }
 
     protected override async Task OnActivateAsync()
@@ -19,25 +26,62 @@ public class InventoryActor : Actor, IInventoryActor
 
     public virtual async Task<InventoryStateModel> GetInventoryStateAsync()
     {
-        return await StateManager.GetStateAsync<InventoryStateModel>(InventoryStateName);
+        var state = await InternalGetInventoryStateAsync();
+
+        await TrySetInventoryStateAsync(state);
+
+        return state;
     }
 
-    public virtual async Task IncreaseInventoryAsync(int quantity, bool decreaseSold)
+    public virtual async Task IncreaseInventoryAsync(int quantity, bool decreaseSold, bool isFlashSale)
     {
-        var state = await GetInventoryStateAsync();
+        var state = await InternalGetInventoryStateAsync();
 
         InternalIncreaseInventory(state, quantity, decreaseSold);
 
-        await SetInventoryStateAsync(state);
+        if (!isFlashSale || state.Inventory == 0)
+        {
+            await SetInventoryStateAsync(state);
+        }
+        else
+        {
+            TimeToPersistInventory ??= Clock.Now + TimeSpan.FromSeconds(30);
+
+            await TrySetInventoryStateAsync(state);
+        }
     }
 
-    public async Task ReduceInventoryAsync(int quantity, bool increaseSold)
+    public virtual async Task ReduceInventoryAsync(int quantity, bool increaseSold, bool isFlashSale)
     {
-        var state = await GetInventoryStateAsync();
+        var state = await InternalGetInventoryStateAsync();
 
         InternalReduceInventory(state, quantity, increaseSold);
 
-        await SetInventoryStateAsync(state);
+        if (!isFlashSale || state.Inventory == 0)
+        {
+            await SetInventoryStateAsync(state);
+        }
+        else
+        {
+            TimeToPersistInventory ??= Clock.Now + TimeSpan.FromSeconds(30);
+
+            await TrySetInventoryStateAsync(state);
+        }
+    }
+
+    public virtual Task<InventoryStateModel> InternalGetInventoryStateAsync() =>
+        StateManager.GetStateAsync<InventoryStateModel>(InventoryStateName);
+
+    public async Task<bool> TrySetInventoryStateAsync(InventoryStateModel stateModel)
+    {
+        if (!TimeToPersistInventory.HasValue || TimeToPersistInventory.Value < Clock.Now)
+        {
+            return false;
+        }
+
+        await SetInventoryStateAsync(stateModel);
+
+        return true;
     }
 
     protected virtual async Task SetInventoryStateAsync(InventoryStateModel state)

plugins/Inventories/DaprActors/src/EasyAbp.EShop.Products.DaprActorsInventory.Domain/EasyAbp/EShop/Products/DaprActorsInventory/DaprActorsProductInventoryProvider.cs

@@ -57,13 +57,13 @@ public class DaprActorsProductInventoryProvider : IProductInventoryProvider, ITr
     }
 
     public virtual async Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity,
-        bool decreaseSold)
+        bool decreaseSold, bool isFlashSale = false)
     {
         var actor = await GetActorAsync(model);
 
         try
         {
-            await actor.IncreaseInventoryAsync(quantity, decreaseSold);
+            await actor.IncreaseInventoryAsync(quantity, decreaseSold, isFlashSale);
         }
         catch (Exception e)
         {
@@ -75,7 +75,8 @@ public class DaprActorsProductInventoryProvider : IProductInventoryProvider, ITr
         return true;
     }
 
-    public virtual async Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold)
+    public virtual async Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold,
+        bool isFlashSale = false)
     {
         var actor = await GetActorAsync(model);
 
@@ -88,7 +89,7 @@ public class DaprActorsProductInventoryProvider : IProductInventoryProvider, ITr
 
         try
         {
-            await actor.ReduceInventoryAsync(quantity, increaseSold);
+            await actor.ReduceInventoryAsync(quantity, increaseSold, isFlashSale);
         }
         catch (Exception e)
         {

plugins/Inventories/DaprActors/test/EasyAbp.EShop.Products.DaprActorsInventory.Domain.Tests/FakeInventoryActor.cs

@@ -17,7 +17,7 @@ public class FakeInventoryActor : IInventoryActor, ITransientDependency
         return Task.FromResult(StateModel);
     }
 
-    public Task IncreaseInventoryAsync(int quantity, bool decreaseSold)
+    public Task IncreaseInventoryAsync(int quantity, bool decreaseSold, bool isFlashSale)
     {
         StateModel.Inventory += quantity;
 
@@ -29,7 +29,7 @@ public class FakeInventoryActor : IInventoryActor, ITransientDependency
         return Task.CompletedTask;
     }
 
-    public Task ReduceInventoryAsync(int quantity, bool increaseSold)
+    public Task ReduceInventoryAsync(int quantity, bool increaseSold, bool isFlashSale)
     {
         StateModel.Inventory -= quantity;
 

plugins/Inventories/OrleansGrains/src/EasyAbp.EShop.Plugins.Inventories.OrleansGrains.Abstractions/EasyAbp/EShop/Plugins/Inventories/OrleansGrains/IInventoryGrain.cs

@@ -7,7 +7,7 @@ public interface IInventoryGrain : IGrainWithStringKey
 {
     Task<InventoryStateModel> GetInventoryStateAsync();
 
-    Task IncreaseInventoryAsync(int quantity, bool decreaseSold);
+    Task IncreaseInventoryAsync(int quantity, bool decreaseSold, bool isFlashSale);
 
-    Task ReduceInventoryAsync(int quantity, bool increaseSold);
+    Task ReduceInventoryAsync(int quantity, bool increaseSold, bool isFlashSale);
 }

plugins/Inventories/OrleansGrains/src/EasyAbp.EShop.Plugins.Inventories.OrleansGrains/EasyAbp.EShop.Plugins.Inventories.OrleansGrains.csproj

@@ -12,6 +12,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Volo.Abp.Timing" Version="$(AbpVersion)" />
     <PackageReference Include="Microsoft.Orleans.Core.Abstractions" Version="$(OrleansVersion)" />
     <PackageReference Include="Microsoft.Orleans.CodeGenerator.MSBuild" Version="$(OrleansVersion)">
       <PrivateAssets>all</PrivateAssets>

plugins/Inventories/OrleansGrains/src/EasyAbp.EShop.Plugins.Inventories.OrleansGrains/EasyAbp/EShop/Plugins/Inventories/OrleansGrains/EShopPluginsInventoriesOrleansGrainsModule.cs

@@ -1,8 +1,10 @@
 using Volo.Abp.Modularity;
+using Volo.Abp.Timing;
 
 namespace EasyAbp.EShop.Plugins.Inventories.OrleansGrains;
 
 [DependsOn(
+    typeof(AbpTimingModule),
     typeof(EShopPluginsInventoriesOrleansGrainsAbstractionsModule)
 )]
 public class EShopPluginsInventoriesOrleansGrainsModule : AbpModule

plugins/Inventories/OrleansGrains/src/EasyAbp.EShop.Plugins.Inventories.OrleansGrains/EasyAbp/EShop/Plugins/Inventories/OrleansGrains/InventoryGrain.cs

@@ -1,7 +1,9 @@
+using System;
 using System.Threading.Tasks;
 using Orleans;
 using Orleans.Providers;
 using Orleans.Runtime;
+using Volo.Abp.Timing;
 
 namespace EasyAbp.EShop.Plugins.Inventories.OrleansGrains;
 
@@ -10,20 +12,66 @@ public class InventoryGrain : Grain<InventoryStateModel>, IInventoryGrain
 {
     public const string StorageProviderName = "EShopInventoryStorage";
 
-    public virtual Task<InventoryStateModel> GetInventoryStateAsync() => Task.FromResult(State);
+    protected DateTime? TimeToPersistInventory { get; set; }
 
-    public virtual async Task IncreaseInventoryAsync(int quantity, bool decreaseSold)
+    protected IClock Clock { get; }
+
+    public InventoryGrain(IClock clock)
+    {
+        Clock = clock;
+    }
+
+    public virtual async Task<InventoryStateModel> GetInventoryStateAsync()
+    {
+        var state = State;
+
+        await TryWriteStateAsync();
+
+        return state;
+    }
+
+    public virtual async Task IncreaseInventoryAsync(int quantity, bool decreaseSold, bool isFlashSale)
     {
         InternalIncreaseInventory(quantity, decreaseSold);
 
-        await WriteStateAsync();
+        if (!isFlashSale || State.Inventory == 0)
+        {
+            await WriteStateAsync();
+        }
+        else
+        {
+            TimeToPersistInventory ??= Clock.Now + TimeSpan.FromSeconds(30);
+
+            await TryWriteStateAsync();
+        }
     }
 
-    public async Task ReduceInventoryAsync(int quantity, bool increaseSold)
+    public virtual async Task ReduceInventoryAsync(int quantity, bool increaseSold, bool isFlashSale)
     {
         InternalReduceInventory(quantity, increaseSold);
 
+        if (!isFlashSale || State.Inventory == 0)
+        {
+            await WriteStateAsync();
+        }
+        else
+        {
+            TimeToPersistInventory ??= Clock.Now + TimeSpan.FromSeconds(30);
+
+            await TryWriteStateAsync();
+        }
+    }
+    
+    public async Task<bool> TryWriteStateAsync()
+    {
+        if (!TimeToPersistInventory.HasValue || TimeToPersistInventory.Value < Clock.Now)
+        {
+            return false;
+        }
+
         await WriteStateAsync();
+
+        return true;
     }
 
     protected virtual void InternalIncreaseInventory(int quantity, bool decreaseSold)

plugins/Inventories/OrleansGrains/src/EasyAbp.EShop.Products.OrleansGrainsInventory.Domain/EasyAbp/EShop/Products/OrleansGrainsInventory/OrleansGrainsProductInventoryProvider.cs

@@ -55,13 +55,13 @@ public class OrleansGrainsProductInventoryProvider : IProductInventoryProvider,
     }
 
     public virtual async Task<bool> TryIncreaseInventoryAsync(InventoryQueryModel model, int quantity,
-        bool decreaseSold)
+        bool decreaseSold, bool isFlashSale = false)
     {
         var grain = await GetGrainAsync(model);
 
         try
         {
-            await grain.IncreaseInventoryAsync(quantity, decreaseSold);
+            await grain.IncreaseInventoryAsync(quantity, decreaseSold, isFlashSale);
         }
         catch (Exception e)
         {
@@ -73,7 +73,8 @@ public class OrleansGrainsProductInventoryProvider : IProductInventoryProvider,
         return true;
     }
 
-    public virtual async Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold)
+    public virtual async Task<bool> TryReduceInventoryAsync(InventoryQueryModel model, int quantity, bool increaseSold,
+        bool isFlashSale = false)
     {
         var grain = await GetGrainAsync(model);
 
@@ -86,7 +87,7 @@ public class OrleansGrainsProductInventoryProvider : IProductInventoryProvider,
 
         try
         {
-            await grain.ReduceInventoryAsync(quantity, increaseSold);
+            await grain.ReduceInventoryAsync(quantity, increaseSold, isFlashSale);
         }
         catch (Exception e)
         {

plugins/Inventories/OrleansGrains/test/EasyAbp.EShop.Products.OrleansGrainsInventory.Domain.Tests/FakeInventoryGrain.cs

@@ -17,7 +17,7 @@ public class FakeInventoryGrain : IInventoryGrain, ITransientDependency
         return Task.FromResult(StateModel);
     }
 
-    public Task IncreaseInventoryAsync(int quantity, bool decreaseSold)
+    public Task IncreaseInventoryAsync(int quantity, bool decreaseSold, bool isFlashSale)
     {
         StateModel.Inventory += quantity;
 
@@ -29,7 +29,7 @@ public class FakeInventoryGrain : IInventoryGrain, ITransientDependency
         return Task.CompletedTask;
     }
 
-    public Task ReduceInventoryAsync(int quantity, bool increaseSold)
+    public Task ReduceInventoryAsync(int quantity, bool increaseSold, bool isFlashSale)
     {
         StateModel.Inventory -= quantity;