46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
"""
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Asynchronous tasks for the CCX app.
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"""
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from django.dispatch import receiver
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import logging
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from opaque_keys import InvalidKeyError
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from opaque_keys.edx.locator import CourseLocator
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from ccx_keys.locator import CCXLocator
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from xmodule.modulestore.django import SignalHandler
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from lms import CELERY_APP
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from lms.djangoapps.ccx.models import CustomCourseForEdX
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log = logging.getLogger("edx.ccx")
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@receiver(SignalHandler.course_published)
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def course_published_handler(sender, course_key, **kwargs): # pylint: disable=unused-argument
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"""
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Consume signals that indicate course published. If course already a CCX, do nothing.
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"""
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if not isinstance(course_key, CCXLocator):
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send_ccx_course_published.delay(unicode(course_key))
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@CELERY_APP.task
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def send_ccx_course_published(course_key):
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"""
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Find all CCX derived from this course, and send course published event for them.
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"""
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course_key = CourseLocator.from_string(course_key)
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for ccx in CustomCourseForEdX.objects.filter(course_id=course_key):
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try:
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ccx_key = CCXLocator.from_course_locator(course_key, unicode(ccx.id))
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except InvalidKeyError:
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log.info('Attempt to publish course with deprecated id. Course: %s. CCX: %s', course_key, ccx.id)
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continue
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responses = SignalHandler.course_published.send(
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sender=ccx,
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course_key=ccx_key
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)
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for rec, response in responses:
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log.info('Signal fired when course is published. Receiver: %s. Response: %s', rec, response)
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