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E-Commerce project using Hexagonal Architecture (Ports-and-adapters) as a proof-of-concept applying DDD in Go

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🛒🌐 eShop

The aim of this project is to be a proof-of-concept using Hexagonal Architecture (Ports-and-adapters) applying DDD in Go 🔥

The code will be reviewed over time to time while I will introduce new concepts about the Hexagonal Architecture or DDD and new features to it; so for sure will be refactored several times.

👩‍💻 Project

The idea of this project is to support an E-Commerce called eShop (super original 🙄). It has to provide a user management system and an order and product catalogue.

The language chosen for this has been Go and the database PostgreSQL. For the simplicity of the case I've added a docker-compose to create the db automatically and a Makefile with a few commands described above ✨

📐 Architecture

As mentioned before, the project it's using the Hexagonal Architecture and the layers are 📁

  • application - it contains the application services (the use cases).

  • domain - it defines the core of our applications; it contains the entities, the factories and the repositories interfaces.

  • infrastructure - it contains the implementation of the repositories defined in the domain and the api definition (router and handlers).

  • cmd - the multiple commands offered by the project.

📝 Commands

Use docker-compose up to start the database. Use make run to start the server. Use make migrations to run the migrations.

Sign In User

Endpoint: /users Request: POST

curl -X POST http://localhost:8080/users -d '{"email":"charly@eshop.com", "name":"charly3pins"}'

Add products to Order

Endpoint: /orders Request: POST

Creating an Order (empty order_id)

curl -X POST http://localhost:8080/orders -d '{"user_id":"48c20124-824a-4cf6-a377-d2efdc789bf3", "products":[{"name":"DDD book", "unit_price": 35, "currency": "EUR", "quantity": 1}, {"name":"post-it", "unit_price": 2, "currency": "EUR", "quantity": 3}, {"name":"pen", "unit_price": 1, "currency": "EUR", "quantity": 5}]}'

Adding a new product to an existing Order (with order_id)

curl -X POST http://localhost:8080/orders -d '{"user_id":"48c20124-824a-4cf6-a377-d2efdc789bf3", "order_id": "47fafa06-a73a-4733-966b-60914d1dd8ff", "products":[{"name":"IDDD book", "unit_price": 55, "currency": "EUR", "quantity": 1}]}'

Updating an existing product to an existing Order (with order_id and product_id)

curl -X POST http://localhost:8080/orders -d '{"user_id":"48c20124-824a-4cf6-a377-d2efdc789bf3", "order_id": "47fafa06-a73a-4733-966b-60914d1dd8ff", "products":[{"product_id":"c92ca476-adcd-4843-a5a3-8c442c2f7d4e", "name":"post-it", "unit_price": 2, "currency": "EUR", "quantity": 10}]}'

🤝 Contributing

As with all my projects you are more than welcome to contribute. You can open an issue, a pull request or just send me a message and we can chat about the topic you want 🚀

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E-Commerce project using Hexagonal Architecture (Ports-and-adapters) as a proof-of-concept applying DDD in Go

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