Useful code

run-uvicorn.py

"""
Use this script to debug an application served by Uvicorn.
"""
# Nota bene: to debug an application that configures an event loop before calling uvicorn.run,
# it is possible to replace `uvicorn.run` with the following code fragment.

# This is necessary for example, when data access layer and business logic
# are configured before starting the application.
# See https://github.com/encode/uvicorn/pull/446#issuecomment-540484961

from uvicorn import Server, Config
from uvicorn.supervisors import Multiprocess, StatReload
from server import app


class DebugConfig(Config):

    def setup_event_loop(self):
        ...


def run(application, **kwargs):
    config = DebugConfig(application, **kwargs)
    server = Server(config=config)

    if config.reload and not isinstance(application, str):
        config.logger_instance.warn(
            "auto-reload only works when app is passed as an import string."
        )

    if isinstance(application, str) and (config.debug or config.reload):
        sock = config.bind_socket()
        supervisor = StatReload(config)
        supervisor.run(server.run, sockets=[sock])
    elif config.workers > 1:
        sock = config.bind_socket()
        supervisor = Multiprocess(config)
        supervisor.run(server.run, sockets=[sock])
    else:
        server.run()


run(app, host='127.0.0.1', port=44777, log_level='info')