Assuming I'm starting a Flask app under gunicorn as per http://gunicorn.org/deploy.html#runit, is there a way for me to include/parse/access additional command line arguments?
E.g., can I include and parse the
foo option in my Flask application somehow?
gunicorn mypackage:app --foo=bar
You can't pass command line arguments directly but you can choose application configurations easily enough.
$ gunicorn 'mypackage:build_app(foo="bar")'
Will call the function "build_app" passing the foo="bar" kwarg as expected. This function should then return the WSGI callable that'll be used.
I usually put it in
main() and then I can run with or without gunicorn (assuming your
main() supports other functions too).
# __init__.py # Normal entry point def main(): ... # Gunicorn entry point generator def app(*args, **kwargs): # Gunicorn CLI args are useless. # https://stackoverflow.com/questions/8495367/ # # Start the application in modified environment. # https://stackoverflow.com/questions/18668947/ # import sys sys.argv = ['--gunicorn'] for k in kwargs: sys.argv.append("--" + k) sys.argv.append(kwargs[k]) return main()
That way you can run simply with e.g.
gunicorn 'app(foo=bar)' ...
main() can use standard code that expects the arguments in