Document how to allow long running request not block everything else

[valgog]

Now per default the long running request is blocking all other requests. This is an issue of Flask, but still would make sense to document.

Here is an example from Henning's email:

#!/usr/bin/env python3                                                                                                                                                                                                                       

import gevent.monkey

gevent.monkey.patch_all()  # CHANGED!

import connexion
import flask
from time import sleep

def get_greeting():

    def generator():
        while True:
            yield "beat\n\n"
            sleep(5)

    response = flask.Response(generator(), mimetype='text/plain', status=200)
    return response

if __name__ == '__main__':
    app = connexion.App(__name__, 8080, server='gevent')  # CHANGED!
    app.add_api('helloworld-api.yaml', arguments={'title': 'Hello World Example'})
    app.run()

[hjacobs]

Yes, not specifying the server will run Flask with the Werkzeug development HTTP server --- which is not meant for production usage.

You can either run Connexion with gevent, Tornado or some WSGI container (not tested, see #54).

[hjacobs]

I'm reopening this issue as the mentioned behavior (gevent monkey patch, uWSGI, etc) is not yet fully documented (in README or connexion.readthedocs.org).

[hjacobs]

This is not really an issue of Connexion, but we should make it easy for people without prior Python/Flask/WSGI knowledge 😄

[rafaelcaricio]

Does it covers what is expected by this issue?

[rafaelcaricio]

Closing this issue, we have info about that in the README

[funseiki]

This makes sense for the gevent lib, since the corresponding libraries are patched. How does this work with something like tornado, where we must yield a Future object?