【发布时间】:2020-08-10 15:29:47
【问题描述】:
我正在尝试使用 celery 发送通知。
@shared_task(name='send_notifis')
def send_notifs(device_ids, title, message):
from pills_reminder.models import UserNotifications, UserDevice
devices = UserDevice.objects.filter(id__in=device_ids)
print(devices)
device_tokens = []
for device in devices:
UserNotifications.objects.create(
uid=device.device_id,
title=title,
message=message,
)
print(UserNotifications)
device_tokens.append(device.registration_token)
if len(device_tokens) > 1:
device_tokens = ["".join(token.split()) for token in device_tokens]
response = push_service.notify_multiple_devices(registration_ids=device_tokens,
message_title=title,
message_body=message)
elif len(device_tokens) == 1:
registration_id = "".join(device_tokens[0].split())
response = push_service.notify_single_device(registration_id=registration_id,
message_title=title,
message_body=message)
else:
pass
print(response)
return True
这在没有 .delay() 和运行时使用
python manage.py shell
>>> send_notifs.delay(devices, title='title', message='message')
<AsyncResult: f54188f8-cec6-42dd-a840-b097abffd7f4>
但是当我使用 Django 模型 post_save 信号调用时它会冻结。
@receiver(post_save, sender=Notification)
def Notification_post_save_handler(sender, instance, **kwargs):
print('hello from post_save signal')
devices = instance.get_devices()
# send_notifs(devices)
if len(devices)>0:
send_notifs.delay(devices,
title=instance.title,
message=instance.message)
上面的代码冻结了执行,但没有.delay。它工作正常。
更新:1
.delay 的上述任务是从 python manage.py shell 而不是从 runserver 运行的。所以问题出在 celery 和 Django 设置上。因此我深入挖掘并发现了
从shell 运行时我明白了,
>>> add.app.conf #(add is a async task here)
{'broker_url': 'redis://localhost:6379/1'}, ...
但从runserver 运行会给出:
`{'broker_url': None}`
现在我正在寻找如何正确设置设置?我正在使用带有 celery.py 的 django-configurations
from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'core.settings')
os.environ.setdefault('DJANGO_CONFIGURATION', 'Development')
import configurations
configurations.setup()
app = Celery('core')
app.config_from_object('django.conf:settings', namespace='CELERY')
app.autodiscover_tasks()
@app.task(bind=True)
def debug_task(self):
print('Request: {0!r}'.format(self.request))
感谢任何帮助。感谢您的时间和耐心。
【问题讨论】:
标签: django celery celery-task