We're seeing slow commits on production for courseware_studentmodule
updates. Based on the slow queries during those times, we think it
might be because multiple worker processes are trying to update the
same rows from within long-running transactions (since courseware
is relatively slow).
The risk with this is that since the whole view execution is no
longer wrapped in a big implicit transaction, it's possible that
XBlock state will update and things that key off of that (e.g.
completion progress information or pre-req milestones) will fail
in a way that will leave the database in an unplanned-for state,
though this is already the case for those actions that trigger
asynchronous tasks like grades recalculation.
The query counts for the index view test were adjusted down
because save points count towards the total and we're no longer
setting them at the top level around the view as a whole.
- ensure logic for displaying reset dealines banner in courseware
is behind the relative dates waffle flag, only shows if the
course is self paced, and handles the situation where no
sequentials exist.
If the user is not logged in, the ExperimentWaffleFlag code was
raising an exception when trying to send an event to segment.
This is a quick fix to ignore anonymous users.
The VideoBlock `handle_ajax` is allowing NaN values for speed key
and causing videos to not load. Also added a data migration to fix
the data for learners.
PROD-1148
Create the COURSEWARE_MICROFRONTEND_COURSE_TEAM_PREVIEW
CourseWaffleFlag (courseware.microfrontend_course_team_preview) to
enable us to roll out the new Courseware MFE as a preview to
select course teams without affecting their students. TNL-7117
This commit also fixes an issue where these links are shown in Old
Mongo courses (TNL-7116). Old Mongo is marked for deprecation
(DEPR-58), and is not intended to ever be supported by the new MFE.
Show a link the courseware MFE to course staff if the
ENABLE_COURSEWARE_MICROFRONTEND feature is enabled and the
REDIRECT_TO_COURSEWARE_MICROFRONTEND CourseWaffleFlag is active
for that course. Previously only global staff could see this link.
This commit also adds ENABLE_COURSEWARE_MICROFRONTEND to
lms/envs/common.py and makes this value True by default on
devstack, since that front end application should soon be part
of devstack: https://github.com/edx/devstack/pull/484
Related to TNL-6982 and TNL-7045.
This is a helpful class when running an experiment, to help
bucket users and keep track of which enrollments to consider
as part of the experiment.
AA-53
Learner who have already earned PDF honor certificates in old courses
are unable to see the certificate links on dashboard and course progress
pages since `course.cert_html_view_enabled` is deprecated and default to
True for all courses.
PROD-60
The Video Player XBlock will sometimes make API calls to /couses/yt_video_metadata, a REST API endpoint that in turn loads video metadata from YouTube using the configured settings.YOUTUBE_API_KEY.
However, in the Blockstore-based XBlock runtime, we are running XBlocks in a secure sandbox, and the user's browser cannot pass session cookies when calling REST API endpoints. So currently, the video XBlock tries to request YouTube metadata from that API endpoint, but it fails if run within such a sandbox.
The existing API also doesn't work for anonymous users (users who are allowed to see video XBlocks but who have not logged in to an LMS user account).
This commit updates the Video XBlock so that it can use a handler to load the data from YouTube instead of a generic REST API. This works well in the new runtime, because it has code to support calling handlers within the sandbox, including by anonymous users.
I also fixed a bug where on a default devstack, the endpoint will try calling YouTube using PUT_YOUR_API_KEY_HERE as an API key, and get a "bad request" error from YouTube.
The code could be re-organized by moving things around, but I've left everything as-is for now to keep the diff as small as possible.
This adds request caching to the following places:
* course expiration wrapper (displayed in Units)
* offer banner generation (displayed in Units)
* get_enrollment
* user_by_anonymous_id
* youtube_disabled_for_course
On a sample course with edx-val enabled, this reduced the queries
for a large sequence from 450 to 155.
