Files
edx-platform/openedx/core/djangoapps/discussions/tasks.py
Kshitij Sobti 346257dadf fix: discussion topic links not created in some cases (#31032)
This commit attempts to fix cases where dicussion topic links aren't created
during a provider change.

It does so by eliminating areas where there could be desynchronisation between
the configuration the course configuration in Mogo and the discussion config
in MySQL.

The topic creation code now uses the database version of the config which is
more recent.
2022-09-29 17:16:03 +05:00

188 lines
8.1 KiB
Python

"""
Tasks for discussions
"""
import logging
from celery import shared_task
from edx_django_utils.monitoring import set_code_owner_attribute
from opaque_keys.edx.keys import CourseKey
from openedx_events.learning.data import CourseDiscussionConfigurationData, DiscussionTopicContext
from openedx_events.learning.signals import COURSE_DISCUSSIONS_CHANGED
from xmodule.modulestore import ModuleStoreEnum
from xmodule.modulestore.django import modulestore
from .config.waffle import ENABLE_NEW_STRUCTURE_DISCUSSIONS
from .models import DiscussionsConfiguration, Provider
from .utils import get_accessible_discussion_xblocks_by_course_id
log = logging.getLogger(__name__)
@shared_task
@set_code_owner_attribute
def update_discussions_settings_from_course_task(course_key_str: str):
"""
Celery task that creates or updates discussions settings for a course.
Args:
course_key_str (str): course key string
"""
course_key = CourseKey.from_string(course_key_str)
config_data = update_discussions_settings_from_course(course_key)
COURSE_DISCUSSIONS_CHANGED.send_event(configuration=config_data)
def update_discussions_settings_from_course(course_key: CourseKey) -> CourseDiscussionConfigurationData:
"""
When there are changes to a course, construct a new data structure containing all the context needed to update the
course's discussion settings in the database.
Args:
course_key (CourseKey): The course that was recently updated.
Returns:
(CourseDiscussionConfigurationData): structured discussion configuration data.
"""
log.info(f"Updating discussion settings for course: {course_key}")
store = modulestore()
discussions_config = DiscussionsConfiguration.get(course_key)
supports_in_context = discussions_config.supports_in_context_discussions()
provider_type = discussions_config.provider_type
def iter_discussable_units():
subsections = store.get_items(course_key, qualifiers={"category": "sequential"})
# Start at 99 so that the initial increment starts it at 100.
# This leaves the first 100 slots for the course wide topics, which is only a concern if there are more
# than that many.
idx = 99
for subsection in subsections:
section = store.get_item(subsection.parent)
for unit in subsection.get_children():
# Increment index even for skipped units so that the index is more stable and won't change
# if settings change, only if a unit is added or removed.
idx += 1
# If unit-level visibility is enabled and the unit doesn't have discussion enabled, skip it.
if unit_level_visibility and not getattr(unit, "discussion_enabled", False):
continue
# If the unit is in a graded section and graded sections aren't enabled skip it.
if subsection.graded and not enable_graded_units:
continue
# If the unit is an exam, skip it.
if subsection.is_practice_exam or subsection.is_proctored_enabled or subsection.is_time_limited:
continue
yield DiscussionTopicContext(
usage_key=unit.location,
title=unit.display_name,
group_id=None,
ordering=idx,
context={
"section": section.display_name,
"subsection": subsection.display_name,
"unit": unit.display_name,
},
)
with store.branch_setting(ModuleStoreEnum.Branch.published_only, course_key):
course = store.get_course(course_key)
enable_in_context = discussions_config.enable_in_context
provider_config = discussions_config.plugin_configuration
unit_level_visibility = discussions_config.unit_level_visibility
enable_graded_units = discussions_config.enable_graded_units
contexts = []
if supports_in_context:
sorted_topics = sorted(
course.discussion_topics.items(),
key=lambda item: item[1].get("sort_key", item[0]),
)
contexts = [
DiscussionTopicContext(
title=topic_name,
external_id=topic_config.get('id', None),
ordering=idx,
)
for idx, (topic_name, topic_config) in enumerate(sorted_topics)
if topic_config.get('id', None)
]
if enable_in_context:
contexts.extend(list(iter_discussable_units()))
config_data = CourseDiscussionConfigurationData(
course_key=course_key,
enable_in_context=enable_in_context,
enable_graded_units=enable_graded_units,
unit_level_visibility=unit_level_visibility,
provider_type=provider_type,
plugin_configuration=provider_config,
contexts=contexts,
)
return config_data
def update_unit_discussion_state_from_discussion_blocks(course_key: CourseKey, user_id: int, force=False) -> None:
"""
Migrate existing courses to the new mechanism for linking discussion to units.
This will iterate over an existing course's discussion xblocks and mark the units
they are in as discussable.
Args:
course_key (CourseKey): CourseKey for course.
user_id (int): User id for the user performing this operation.
force (bool): Force migration of data even if not using legacy provider
"""
store = modulestore()
course = store.get_course(course_key)
provider = course.discussions_settings.get('provider', None)
# Only migrate to the new discussion provider if the current provider is the legacy provider.
if provider is not None and provider != Provider.LEGACY and not force:
return
log.info(f"Migrating legacy discussion config for {course_key}")
with store.bulk_operations(course_key):
discussion_blocks = get_accessible_discussion_xblocks_by_course_id(course_key, include_all=True)
discussible_units = {
discussion_block.parent
for discussion_block in discussion_blocks
if discussion_block.parent.block_type == 'vertical'
}
log.info(f"Found {len(discussible_units)} discussible unit(s) in {course_key}")
verticals = store.get_items(course_key, qualifiers={'block_type': 'vertical'})
graded_subsections = {
block.location
for block in store.get_items(
course_key,
qualifies={'block_type': 'sequential'},
settings={'graded': True}
)
}
subsections_with_discussions = set()
for vertical in verticals:
if vertical.location in discussible_units:
vertical.discussion_enabled = True
subsections_with_discussions.add(vertical.parent)
else:
vertical.discussion_enabled = False
store.update_item(vertical, user_id)
# If there are any graded subsections that have discussion units,
# then enable discussions for graded subsections for the course
enable_graded_subsections = bool(graded_subsections & subsections_with_discussions)
# If the new discussions experience is enabled globally,
# then also set up the new provider for the course.
if ENABLE_NEW_STRUCTURE_DISCUSSIONS.is_enabled():
log.info(f"New structure is enabled, also updating {course_key} to use new provider")
course = store.get_course(course_key)
provider = Provider.OPEN_EDX
course.discussions_settings['provider'] = provider
course.discussions_settings['enable_graded_units'] = enable_graded_subsections
course.discussions_settings['unit_level_visibility'] = True
store.update_item(course, user_id)
discussion_config = DiscussionsConfiguration.get(course_key)
discussion_config.provider_type = provider
discussion_config.enable_graded_units = enable_graded_subsections
discussion_config.unit_level_visibility = True
discussion_config.save()