69 lines
2.6 KiB
Python
69 lines
2.6 KiB
Python
"""
|
|
This file contains celery tasks for contentstore views
|
|
"""
|
|
|
|
from celery.task import task
|
|
from django.contrib.auth.models import User
|
|
import json
|
|
import logging
|
|
from xmodule.modulestore.django import modulestore
|
|
from xmodule.course_module import CourseFields
|
|
|
|
from xmodule.modulestore.exceptions import DuplicateCourseError, ItemNotFoundError
|
|
from course_action_state.models import CourseRerunState
|
|
from contentstore.utils import initialize_permissions
|
|
from opaque_keys.edx.keys import CourseKey
|
|
|
|
|
|
@task()
|
|
def rerun_course(source_course_key_string, destination_course_key_string, user_id, fields=None):
|
|
"""
|
|
Reruns a course in a new celery task.
|
|
"""
|
|
try:
|
|
# deserialize the payload
|
|
source_course_key = CourseKey.from_string(source_course_key_string)
|
|
destination_course_key = CourseKey.from_string(destination_course_key_string)
|
|
fields = deserialize_fields(fields) if fields else None
|
|
|
|
# use the split modulestore as the store for the rerun course,
|
|
# as the Mongo modulestore doesn't support multiple runs of the same course.
|
|
store = modulestore()
|
|
with store.default_store('split'):
|
|
store.clone_course(source_course_key, destination_course_key, user_id, fields=fields)
|
|
|
|
# set initial permissions for the user to access the course.
|
|
initialize_permissions(destination_course_key, User.objects.get(id=user_id))
|
|
|
|
# update state: Succeeded
|
|
CourseRerunState.objects.succeeded(course_key=destination_course_key)
|
|
return "succeeded"
|
|
|
|
except DuplicateCourseError as exc:
|
|
# do NOT delete the original course, only update the status
|
|
CourseRerunState.objects.failed(course_key=destination_course_key)
|
|
logging.exception(u'Course Rerun Error')
|
|
return "duplicate course"
|
|
|
|
# catch all exceptions so we can update the state and properly cleanup the course.
|
|
except Exception as exc: # pylint: disable=broad-except
|
|
# update state: Failed
|
|
CourseRerunState.objects.failed(course_key=destination_course_key)
|
|
logging.exception(u'Course Rerun Error')
|
|
|
|
try:
|
|
# cleanup any remnants of the course
|
|
modulestore().delete_course(destination_course_key, user_id)
|
|
except ItemNotFoundError:
|
|
# it's possible there was an error even before the course module was created
|
|
pass
|
|
|
|
return "exception: " + unicode(exc)
|
|
|
|
|
|
def deserialize_fields(json_fields):
|
|
fields = json.loads(json_fields)
|
|
for field_name, value in fields.iteritems():
|
|
fields[field_name] = getattr(CourseFields, field_name).from_json(value)
|
|
return fields
|