06ddb2f359
* Skip adding the credit req tasks to the queue for non-credit courses. * Load only ICRV XBlocks instead of traversing the course tree.
164 lines
5.0 KiB
Python
164 lines
5.0 KiB
Python
"""
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This file contains celery tasks for credit course views.
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"""
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from django.conf import settings
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from celery import task
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from celery.utils.log import get_task_logger
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from opaque_keys import InvalidKeyError
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from opaque_keys.edx.keys import CourseKey
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from .api import set_credit_requirements
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from openedx.core.djangoapps.credit.exceptions import InvalidCreditRequirements
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from openedx.core.djangoapps.credit.models import CreditCourse
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from xmodule.modulestore.django import modulestore
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from xmodule.modulestore.exceptions import ItemNotFoundError
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LOGGER = get_task_logger(__name__)
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# XBlocks that can be added as credit requirements
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CREDIT_REQUIREMENT_XBLOCKS = [
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{
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"category": "edx-reverification-block",
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"requirement-namespace": "reverification"
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}
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]
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# pylint: disable=not-callable
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@task(default_retry_delay=settings.CREDIT_TASK_DEFAULT_RETRY_DELAY, max_retries=settings.CREDIT_TASK_MAX_RETRIES)
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def update_credit_course_requirements(course_id): # pylint: disable=invalid-name
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"""
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Updates course requirements table for a course.
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Args:
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course_id(str): A string representation of course identifier
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Returns:
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None
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"""
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try:
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course_key = CourseKey.from_string(course_id)
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is_credit_course = CreditCourse.is_credit_course(course_key)
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if is_credit_course:
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requirements = _get_course_credit_requirements(course_key)
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set_credit_requirements(course_key, requirements)
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except (InvalidKeyError, ItemNotFoundError, InvalidCreditRequirements) as exc:
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LOGGER.error('Error on adding the requirements for course %s - %s', course_id, unicode(exc))
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raise update_credit_course_requirements.retry(args=[course_id], exc=exc)
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else:
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LOGGER.info('Requirements added for course %s', course_id)
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def _get_course_credit_requirements(course_key):
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"""
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Returns the list of credit requirements for the given course.
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It returns the minimum_grade_credit and also the ICRV checkpoints
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if any were added in the course
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Args:
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course_key (CourseKey): Identifier for the course.
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Returns:
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List of credit requirements (dictionaries)
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"""
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credit_xblock_requirements = _get_credit_course_requirement_xblocks(course_key)
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min_grade_requirement = _get_min_grade_requirement(course_key)
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credit_requirements = min_grade_requirement + credit_xblock_requirements
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return credit_requirements
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def _get_min_grade_requirement(course_key):
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"""
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Get list of 'minimum_grade_credit' requirement for the given course.
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Args:
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course_key (CourseKey): Identifier for the course.
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Returns:
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The list of minimum_grade_credit requirements
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"""
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course = modulestore().get_course(course_key, depth=0)
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try:
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return [
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{
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"namespace": "grade",
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"name": "grade",
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"display_name": "Grade",
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"criteria": {
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"min_grade": getattr(course, "minimum_grade_credit")
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},
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}
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]
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except AttributeError:
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LOGGER.error("The course %s does not has minimum_grade_credit attribute", unicode(course.id))
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else:
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return []
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def _get_credit_course_requirement_xblocks(course_key): # pylint: disable=invalid-name
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"""Generate a course structure dictionary for the specified course.
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Args:
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course_key (CourseKey): Identifier for the course.
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Returns:
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The list of credit requirements xblocks dicts
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"""
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requirements = []
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# Retrieve all XBlocks from the course that we know to be credit requirements.
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# For performance reasons, we look these up by their "category" to avoid
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# loading and searching the entire course tree.
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for desc in CREDIT_REQUIREMENT_XBLOCKS:
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requirements.extend([
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{
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"namespace": desc["requirement-namespace"],
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"name": block.get_credit_requirement_name(),
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"display_name": block.get_credit_requirement_display_name(),
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"criteria": {},
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}
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for block in modulestore().get_items(
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course_key,
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qualifiers={"category": desc["category"]}
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)
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if _is_credit_requirement(block)
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])
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return requirements
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def _is_credit_requirement(xblock):
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"""
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Check if the given XBlock is a credit requirement.
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Args:
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xblock(XBlock): The given XBlock object
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Returns:
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True if XBlock is a credit requirement else False
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"""
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if not callable(getattr(xblock, "get_credit_requirement_namespace", None)):
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LOGGER.error(
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"XBlock %s is marked as a credit requirement but does not "
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"implement get_credit_requirement_namespace()", unicode(xblock)
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)
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return False
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if not callable(getattr(xblock, "get_credit_requirement_name", None)):
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LOGGER.error(
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"XBlock %s is marked as a credit requirement but does not "
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"implement get_credit_requirement_name()", unicode(xblock)
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)
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return False
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return True
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