Critter Stack Sample/Experiment

This repo contains a sample application that I used to experiment with the Marten and Wolverine.

Application Architecture

The application is a simple Pizzeria that takes orders via a REST API.

Marten is used to store the orders and Wolverine publish and subscribe to messages on RabbitMQ.

There are the following microservices in the application.

• Pizzeria.Store
  • Has to REST endpoints:
    • GET /menu - Returns the menu
    • POST /order - Takes an order
• Pizzeria.Kitchen
  • Simulates the cooking of pizzas
• Pizzeria.Delivery
  • Simulates the delivery of orders

Sequence of Events

• Pizzeria.Store receives an order on the POST /orders endpoint, stores as a document in the database, and puts a message on the orders queue.
• Pizzeria.Kitchen receives the messages off the orders queue, simulates the preparation of the pizzas, and then puts a messages on the prepared-orders queue.
• Pizzeria.Store receives the message off the prepared-orders queue, updates the order document to marks it as prepared, and puts a message on the delivery-orders queue.
• Pizzeria.Delivery receives the messages off the delivery-orders queue, simulates the delivery of the order, and then puts a messages on the completed-orders queue.
• Pizzeria.Store finally received messages off the completed-orders queue and updates the order document to mark them as delivered.

Running the Application

1. Clone this repo.
2. Run docker-compose up to start the RabbitMQ, PostgreSQL and Seq containers.
3. Run dotnet run --project ./Pizzeria.Store/Pizzeria.Store.csproj to start the Pizzeria.Store service.
4. Run dotnet run --project ./Pizzeria.Kitchen/Pizzeria.Kitchen.csproj to start the Pizzeria.Kitchen service.
5. Run dotnet run --project ./Pizzeria.Delivery/Pizzeria.Delivery.csproj to start the Pizzeria.Delivery service.
6. Send an order to the Pizza Store using the POST /order endpoint
7. Check the logs in Seq for each service to see the sequence of events.