swapping out Gunicorn for fapws3 in a heavily gevented app

[Adam Hitchcock]

Is this possible?

I'm currently using gevent + gunicorn and I have greenlets everywhere. In some toy examples fapws is not behaving in a cooperative manner with gevent.

One example is that sleep statements don't seem to be yielding the thread in the way I would expect with gevent. Here is a simple example where I yield data via a generator. If you have multiple curls going on at once the sleeps seem to stack across requests.

Thoughts?

-adam

# available at https://gist.github.com/3123487

#!/usr/bin/env python

from gevent import monkey

monkey.patch_all()

from gevent.queue import Queue

from gevent import sleep

from gevent import spawn

import fapws._evwsgi as evwsgi

from fapws import base

class Generator(object):

    def __init__(self):

        super(Generator, self).__init__()

        self.gens = []

        spawn(self.forever)

    def forever(self):

        while True:

            for gen, pipe in self.gens:

                pipe.put(gen.next())

            sleep(0)

    def add(self, i=0):

        def _serial(i=0):

            while True:

                yield str(i)

                i += 1

                sleep(i)

        pipe = Queue()

        self.gens.append((_serial(), pipe))

        return pipe

G = Generator()

def start():

    evwsgi.start('0.0.0.0', '8080')

    evwsgi.set_base_module(base)

    def serial(environ, start_response):

        start_response('200 OK', [('Content-Type', 'application/json')])

        gen = G.add()

        return gen

    evwsgi.wsgi_cb(('/serial', serial))

    evwsgi.set_debug(0)

    evwsgi.run()

if __name__ == '__main__':

    start()