Retail demo environment using NServiceBus & Azure Functions

This demo uses NServiceBus as messaging, Azure Service Bus as transport and Azure Table Storage as persistence. It is created to demo commands, events, saga's and versioning of messages.

Infrastructure as Code

Use the servicebus-topology.ps1 to create the Service Bus namespace, storage account, endpoints and subscriptions.

Flow of messages

1. The rest api places an order.
2. The sales functions app handles the PlaceOrderV1 and PlaceOrderV2 commands.
   • In case of the PlaceOrderV2 command it contacts CRM via a HttpClient
3. The sales functions app publishes an OrderPlaced event.
4. The billing functions app handles the OrderPlaced event and creates a Blob.
5. The billing functions app publishes an OrderBilled event.
6. The shipping console app uses a saga to complete the shipping policy based on both the OrderPlaced and the OrderBilled events.