Bad file descriptor error using Celery #669
Description
Description
postMessage method fails using Celery
What type of issue is this? (place an x in one of the [ ])
- bug
- enhancement (feature request)
- question
- documentation related
- testing related
- discussion
Requirements (place an x in each of the [ ])
- I've read and understood the Contributing guidelines and have done my best effort to follow them.
- I've read and agree to the Code of Conduct.
- I've searched for any related issues and avoided creating a duplicate issue.
Bug Report
Filling out the following details about bugs will help us solve your issue sooner.
Reproducible in:
slackclient version: 2.5.0
python version: 3.7
OS version(s): MacOS 10.15.4
Steps to reproduce:
- Create a simple Celery postMessage task
- Run it
Expected result:
Message is sent
Actual result:
Message sending fails
Attachments:
Task example
@app.task
def send_slack_notifications():
notifications = Notification.objects.filter(status=Notification.NEW, type=Notification.SLACK)
client = WebClient(token=settings.SLACK_API_TOKEN, run_async=False)
for notification in notifications:
try:
client.chat_postMessage(
channel=f'#{notification.receiver}',
text="Hello world!",
)
notification.set_success()
except SlackApiError as e:
notification.set_failed()
log.exception(f"An error occurred during slack message send - {e.response['error']}")Error message:
[2020-05-04 10:53:41,480: ERROR/ForkPoolWorker-1] Task src.apps.notifications.tasks.send_slack_notifications[acfcb697-79f5-4ffd-958f-1139f1c3f5d0] raised unexpected: OSError(9, 'Bad file descriptor')
Traceback (most recent call last):
File "/Users/k0t3n/.local/share/virtualenvs/exchanger-a9eTqm1t/lib/python3.7/site-packages/celery/app/trace.py", line 385, in trace_task
R = retval = fun(*args, **kwargs)
File "/Users/k0t3n/.local/share/virtualenvs/exchanger-a9eTqm1t/lib/python3.7/site-packages/celery/app/trace.py", line 650, in __protected_call__
return self.run(*args, **kwargs)
File "/Users/k0t3n/PycharmProjects/exchanger/src/apps/notifications/tasks.py", line 22, in send_slack_notifications
text="Hello world!",
File "/Users/k0t3n/.local/share/virtualenvs/exchanger-a9eTqm1t/lib/python3.7/site-packages/slack/web/client.py", line 660, in chat_postMessage
return self.api_call("chat.postMessage", json=kwargs)
File "/Users/k0t3n/.local/share/virtualenvs/exchanger-a9eTqm1t/lib/python3.7/site-packages/slack/web/base_client.py", line 174, in api_call
return self._event_loop.run_until_complete(future)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 570, in run_until_complete
self.run_forever()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 538, in run_forever
self._run_once()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/base_events.py", line 1746, in _run_once
event_list = self._selector.select(timeout)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/selectors.py", line 558, in select
kev_list = self._selector.control(None, max_ev, timeout)
OSError: [Errno 9] Bad file descriptor