def start(io_loop=None, check_time=500):
"""Restarts the process automatically when a module is modified.
We run on the I/O loop, and restarting is a destructive operation,
so will terminate any pending requests.
"""
io_loop = io_loop or ioloop.IOLoop.instance()
modify_times = {}
callback = functools.partial(_reload_on_update, io_loop, modify_times)
scheduler = ioloop.PeriodicCallback(callback, check_time, io_loop=io_loop)
scheduler.start()
def __init__(self,
connection,
prefix='',
user_settings=dict(),
io_loop=None,
session_kls=None):
"""Constructor.
`connection`
SockJSConnection class
`prefix`
Connection prefix
`user_settings`
Settings dictionary
`io_loop`
Optional IOLoop instance
"""
# TODO: Version check
if version_info[0] < 2:
raise Exception('sockjs-tornado requires Tornado 2.0 or higher.')
# Store connection class
self._connection = connection
# Initialize io_loop
self.io_loop = io_loop or ioloop.IOLoop.instance()
# Settings
self.settings = DEFAULT_SETTINGS.copy()
if user_settings:
self.settings.update(user_settings)
self.websockets_enabled = 'websocket' not in self.settings[
'disabled_transports']
self.cookie_needed = self.settings['jsessionid']
# Sessions
self._session_kls = session_kls if session_kls else session.Session
self._sessions = sessioncontainer.SessionContainer()
check_interval = self.settings['session_check_interval'] * 1000
self._sessions_cleanup = ioloop.PeriodicCallback(
self._sessions.expire, check_interval, self.io_loop)
self._sessions_cleanup.start()
# Stats
self.stats = stats.StatsCollector(self.io_loop)
# Initialize URLs
base = prefix + r'/[^/.]+/(?P<session_id>[^/.]+)'
# Generate global handler URLs
self._transport_urls = [('%s/%s$' % (base, p[0]), p[1],
dict(server=self)) for p in GLOBAL_HANDLERS]
for k, v in TRANSPORTS.items():
if k in self.settings['disabled_transports']:
continue
# Only version 1 is supported
self._transport_urls.append(
(r'%s/%s$' % (base, k), v, dict(server=self)))
# Generate static URLs
self._transport_urls.extend([('%s%s' % (prefix, k), v,
dict(server=self))
for k, v in STATIC_HANDLERS.items()])