def iterator(self):
# get the class object from settings (or default if not specified).
Backend = class_from_str(SSE_BACKEND_CLASS)
# create a backend instance and subscribe the channel.
backend = Backend()
backend.subscribe(self.channel)
for event, data in backend.listen():
self.sse.add_message(event, data)
yield
# -*- coding: utf-8 -*-
from django.conf import settings
from utils import class_from_str
# create a reference to the backend class.
SseBackendClass = class_from_str(getattr(settings, 'SSE_BACKEND_CLASS'))
def send_event(event, data, channel):
'''
A handy function to send an event to a particular channel.
Arguments:
event -- the name of the event to be sent.
data -- data (dict) to be sent along with the event.
channel -- the name of the channel to send event to.
'''
SseBackendClass().send_event(event, data, channel)
