daphne/channels/management/commands/runserver.py

52 lines
1.8 KiB
Python

import django
import threading
from django.core.management.commands.runserver import Command as RunserverCommand
from django.core.management import CommandError
from channels import channel_backends, DEFAULT_CHANNEL_BACKEND
from channels.worker import Worker
from channels.utils import auto_import_consumers
from channels.adapters import UrlConsumer
from channels.interfaces.wsgi import WSGIInterface
class Command(RunserverCommand):
def get_handler(self, *args, **options):
"""
Returns the default WSGI handler for the runner.
"""
return WSGIInterface(self.channel_backend)
def run(self, *args, **options):
# Force disable reloader for now
options['use_reloader'] = False
# Check a handler is registered for http reqs
self.channel_backend = channel_backends[DEFAULT_CHANNEL_BACKEND]
auto_import_consumers()
if not self.channel_backend.registry.consumer_for_channel("django.wsgi.request"):
# Register the default one
self.channel_backend.registry.add_consumer(UrlConsumer(), ["django.wsgi.request"])
# Launch a worker thread
worker = WorkerThread(self.channel_backend)
worker.daemon = True
worker.start()
# Note that this is the right one on the console
self.stdout.write("Worker thread running, channels enabled")
if self.channel_backend.local_only:
self.stdout.write("Local channel backend detected, no remote channels support")
# Run the rest
return super(Command, self).run(*args, **options)
class WorkerThread(threading.Thread):
"""
Class that runs a worker
"""
def __init__(self, channel_backend):
super(WorkerThread, self).__init__()
self.channel_backend = channel_backend
def run(self):
Worker(channel_backend=self.channel_backend).run()