core/server.py

import subprocess
from granian.constants import Interfaces
from granian.server import Granian

from services.logger import root_logger as logger
from settings import PORT

def is_docker_container_running(name):
    cmd = ['docker', 'ps', '-f', f'name={name}']
    output = subprocess.run(cmd, capture_output=True, text=True).stdout
    return name in output

if __name__ == "__main__":
    logger.info("started")

    if is_docker_container_running('uploader'):
        granian_instance = Granian(
            "main:app",
            address="0.0.0.0",  # noqa S104
            port=PORT,
            threads=4,
            websockets=False,
            interface=Interfaces.ASGI,
        )
        granian_instance.serve()
    else:
        logger.info("'uploader' is not running. But very needed !!! \(^.^'\)")