OpenSlides/openslides/utils/tornado_webserver.py
Oskar Hahn d937262d28 Use flake8 instead of pep8. Orderd the imports with isort
* changed the fab-command pep8 to check
* checked and fixed any code with flake8. Also the urls.py
* checkt the projector app with pylint
2013-10-14 18:43:12 +02:00

89 lines
2.8 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.utils.tornado_webserver
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:copyright: (c) 2011-2013 by the OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
import posixpath
from urllib import unquote
from django.conf import settings
from django.core.handlers.wsgi import WSGIHandler as Django_WSGIHandler
from django.utils.translation import ugettext as _
from tornado.httpserver import HTTPServer
from tornado.ioloop import IOLoop
from tornado.options import parse_command_line
from tornado.web import Application, FallbackHandler, StaticFileHandler
from tornado.websocket import WebSocketHandler
from tornado.wsgi import WSGIContainer
class DjangoStaticFileHandler(StaticFileHandler):
"""Handels static data by using the django finders."""
def initialize(self):
"""Overwrite some attributes."""
self.root = ''
self.default_filename = None
def get(self, path, include_body=True):
from django.contrib.staticfiles import finders
normalized_path = posixpath.normpath(unquote(path)).lstrip('/')
absolute_path = finders.find(normalized_path)
return super(DjangoStaticFileHandler, self).get(absolute_path, include_body)
class ProjectorSocketHandler(WebSocketHandler):
"""
Handels the websocket for the projector.
"""
waiters = set()
# The following lines can be uncommented, if there are any problems with
# websockts in iOS Safari 5.0
## def allow_draft76(self):
## # for iOS 5.0 Safari
## return True
def open(self):
ProjectorSocketHandler.waiters.add(self)
def on_close(self):
ProjectorSocketHandler.waiters.remove(self)
@classmethod
def send_updates(cls, slide):
for waiter in cls.waiters:
waiter.write_message(slide)
def run_tornado(addr, port, reload=False):
# Don't try to read the command line args from openslides
parse_command_line(args=[])
# Print listening address and port to command line
if addr == '0.0.0.0':
url_string = _("the machine's local ip address")
else:
url_string = 'http://%s:%s' % (addr, port)
print _("Starting OpenSlides' tornado webserver listening to %(url_string)s") % {'url_string': url_string}
# Start the application
app = WSGIContainer(Django_WSGIHandler())
tornado_app = Application([
(r"%s(.*)" % settings.STATIC_URL, DjangoStaticFileHandler),
(r'%s(.*)' % settings.MEDIA_URL, StaticFileHandler, {'path': settings.MEDIA_ROOT}),
(r'/projector/socket/', ProjectorSocketHandler),
('.*', FallbackHandler, dict(fallback=app))
], debug=reload)
server = HTTPServer(tornado_app)
server.listen(port=port,
address=addr)
IOLoop.instance().start()