Take-Home Coding Task – Senior Python Backend Engineer

Setup

Current application requires Python 3.10.

Rename .env.example file to .env and set all necessary variable values.

Run on docker

docker-compose up --build

You can check mongodb results by

docker exec -it bittensor_stake-mongodb-1 mongosh bittensor_stake --eval "db.stake.find().pretty()"

Where bittensor_stake-mongodb-1 is MongoDB container name and bittensor_stake is the database name.

Run on local

Create virtual environment

python3 -m venv venv

Activate virtual environment

source venv/bin/activate

Install dependencies from requirements.txt

pip install -r requirements.txt

Make sure that MongoDB and Redis services are on

Start the FastAPI server

uvicorn app.main:app --reload --port 8000

In a separate terminal, start the Celery worker

celery -A app.core.celery_app worker --loglevel=info

Just make sure that your requests header contains Authorization: Bearer api-very-secret-token

You can modify api-very-secret-token by changing API_TOKEN environment variable.

Get request example

curl --location 'http://127.0.0.1:8000/api/v1/tao_dividends?netuid=18&hotkey=5FFApaS75bv5pJHfAp2FVLBj9ZaXuFDjEypsaBNc1wCfe52v&trade=true' \
--header 'Authorization: Bearer api-very-secret-token'

Tasks status

1. Docker [Done]
2. FastAPI with Authorization [Done]
3. Cache with Redis [Done]
4. Dividends query [Done]
5. Twitter search [Done]
6. Get a sentiment [Done]
7. Add/Remove stake (branch: stake_service_test) [Not working yet]
8. Background Celery task [Done]
9. Save results in DB [Done]
10. Pytest [Not implemented]

Main sources are in the develop branch. As I didn't have time to clean up everything for production I did not move them to main or master branch.

Add/Remove stake functionality is located at stake_service_test. As it is not working properly I did not move them to develop branch.