asyncwsgi

asyncwsgi is a simple package for tornado and asyncio(WIP) to enable the use of the WSGI interface asynchronously. Behind the scenes greenlet is used to pause and resume each request.

Usage

1. Decorate functions that require async with asyncwsgi.coroutine
2. Use asyncwsgi.wrap to wrap the WSGI container.
3. Run the event loop using asyncwsgi.run

Examples

Django

@asyncwsgi.coroutine
def my_view(request):
    http_client = AsyncHTTPClient()
    response = yield http_client.fetch('http://www.google.com/')
    return render(request, 'my_view.html', {'code': response.code})

...
# Patch django to run on tornado's event loop
def run(host, port, app, **options):
    container = asyncwsgi.wrap(WSGIContainer(app))
    http_server = HTTPServer(container)
    http_server.listen(port, host)
    asyncwsgi.run(IOLoop.current())

if __name__ == "__main__":
    ...
    from django.core.management.commands import runserver
    runserver.run = run

Bottle

import asyncwsgi
import bottle
from tornado.httpclient import AsyncHTTPClient
from tornado.wsgi import WSGIContainer
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop

@bottle.get('/')
@asyncwsgi.coroutine
def index():
    http_client = AsyncHTTPClient()
    response = yield http_client.fetch('http://www.google.com/')
    return 'Status: %d' % response.code

container = asyncwsgi.wrap(WSGIContainer(bottle.default_app()))
http_server = HTTPServer(container)
http_server.listen(8080)
asyncwsgi.run(IOLoop.current())

Installation

pip install asyncwsgi

Todo

• asyncio not fully supported

License

MIT licensed. See LICENSE for details.