szymon6927/hexagonal-architecture-python

An example project that uses FastAPI and follows the hexagonal architecture rules.

hexagonal-architecture-python

This project was created as an example for my blog post https://blog.szymonmiks.pl/p/hexagonal-architecture-in-python/

I encourage you to read the article first before checking the code.

This is for educational purposes only and the code is not production-ready.

Intro

I created a project that uses FastAPI and follows the hexagonal architecture rules.

This project is a simplified gym management software. We have such functionalities like:

• Gym Clients
  • create a gym client
  • change client's personal data
  • archive a client
  • export all clients as a CSV or JSON file to S3 or Dropbox storage
• Gym Passes
  • create a gym pass
  • pause a gym pass
  • renew a gym pass
  • check if gym pass is active
• Gym Classes (CRUD)
  • create a gym class
  • delete a gym class
  • modify a gym class
  • list all gym classes sorted by time and day of the week

Project structure

Stack

• Python 3.10
• FastAPI
• MongoDB

Prerequisites

Make sure you have installed all the following prerequisites on your development machine:

• Python 3.9
• Poetry
• GIT
• Make
• Docker version >= 20.10.7
• docker-compose version >= 1.29.2

Setup

1. Install dependencies:

$ poetry install

2. Setup pre-commit hooks before committing:

$ poetry run pre-commit install

Running app locally

1. In the main project's directory create a new .env file and copy all variables from example.env there.
2. Run docker-compose up -d
3. Go to src/app.py and run the app

Tests

$ poetry run pytest

or

$ make tests