Promotion engine
This topic describes how the Optimizely Commerce Cloud promotion engine works, and how it is used when calculating discounts on a shopping cart.
Promotion engine flow


Promotion engine flow Commerce 10-12


Calculating promotions
Components mentioned here are available in the EPiServer.Commerce.Marketing namespace. PromotionEngine evaluates the condition on all active promotions and gives reward to specific orders when the conditions are fulfilled.
Here is an example of using the promotion engine to calculate promotions using the order API.
var cart = ServiceLocator.Current.GetInstance<IOrderRepository>().LoadOrCreateCart<Cart>(PrincipalInfo.CurrentPrincipal.GetContactId(), Cart.DefaultName);
IEnumerable<RewardDescription> rewardDescriptions = ServiceLocator.Current.GetInstance<IPromotionEngine>().Run(cart);
Getting promotion prices
var promotionEngine = ServiceLocator.Current.GetInstance<IPromotionEngine>();
var currentMarket = ServiceLocator.Current.GetInstance<ICurrentMarket>();
IEnumerable<DiscountedEntry> discountedEntries = promotionEngine.GetDiscountPrices(entryLink, currentMarket);
You can also get promotion prices for a collection of entries.
var promotionEngine = ServiceLocator.Current.GetInstance<IPromotionEngine>();
var currentMarket = ServiceLocator.Current.GetInstance<ICurrentMarket>();
var market = currentMarket.GetCurrentMarket();
IEnumerable<DiscountedEntry> discountedEntries = promotionEngine.GetDiscountPrices(entryLinks, market, market.DefaultCurrency);
Evaluating entries
Evaluate a single entry.
IEnumerable<RewardDescription> rewardDescriptions = ServiceLocator.Current.GetInstance<IPromotionEngine>().Evaluate(entryLink);
Evaluate a collection of entries.
IEnumerable<RewardDescription> rewardDescriptions = ServiceLocator.Current.GetInstance<IPromotionEngine>().Evaluate(entryLinks);
Getting promotions and items for campaign
IEnumerable<PromotionsItems> promotionItemsList = ServiceLocator.Current.GetInstance<IPromotionEngine>().GetPromotionItemsForCampaign(campaignLink);
Calculating promotions using workflows
You can run the promotion system with the workflow system (legacy) to calculate and remove promotions. Updated workflow activities use the EPiServer.Commerce.Marketing.IPromotionEngine** **to make calculations and manipulate the cart.
The new promotion system is used by default in the workflows. Use one of these methods to disable it.
- Update Configs\ecf.app.config.
<Application defaultApplicationName="ECApplication">
<Features>
<add feature="WorkflowsVNext"
state="Disabled"
type="Mediachase.Commerce.Core.Features.WorkflowsVNext, Mediachase.Commerce" />
</Features>
</Application>
- Use the Servicelocator.
var featureSwitch = ServiceLocator.Current.GetInstance<IFeatureSwitch>();
featureSwitch.Features.Add(new WorkflowsVNext());
featureSwitch.DisableFeature(WorkflowsVNext.FeatureWorkflowsVNext);
Related blog post: Old promotion system is (already) dead, long live the new promotion system
Updated 4 months ago