This commit fixes an inconsistency in the way an exam due date is computed for courses that do not use an LTI based proctoring provider.
The edx-exams microservice was released last year to provide support for LTI based proctoring providers. After the release of this microservice, all proctoring requests initiated by the platform began to be funneled through the microservice, which acted as a broker for these requests, routing them directly to the service for exams in courses using an LTI based proctoring provider or to the platform edx-proctoring plugin for all other cases.
There is an asynchronous task in the platform that syncs exams from the platform to either the edx-exams microservice or the edx-proctoring plugin. Prior to the release of the microservice, this task computed the due date on exams as the exam subsection due date if the course was instructor-paced or None. After the release of the microservice, the task computed due dates differently than before. The due date on exams was computed as the due date on the exam, if there was one, or the end date of the course, if there was one, or None. This differed from the prior definition.
This resulted in inconsistent due date behavior. The exams in courses that were published or republished after the edx-exams microservice was released had the new computation of due date, while exams in courses that were published or republished before the edx-exams microservice was released had the old computation of due date.
This causes an issue for all exams in courses using non-LTI based providers. This is because the due date on exams across all courses that either do not use proctoring or that use a non-LTI based provider are inconsistent, depending on when they were last published.
This commit reintroduces the old computation to the task for exams in courses using a non-LTI based proctoring provider (i.e. those courses whose exams are not powered by the edx-exams microservice). In order to maintain the functionality of edx-exams, we continue to compute the due date as before for exams in courses using an LTI based proctoring provider (i.e. those courses whose exams are powered by the edx-exams microservice).
* feat: add xblock endpoint for updating an xblock
fix: remove debugger
feat: make function call more generic
refactor: just use request.json for request data as before
refactor: extract method
fix: revert wrong method change
fix: refactor correct method
feat: use handle_xblock method so that we can do more than update xblocks
fix: usage_key_string defaults to None
add all CRUD operations
fix usage key parameter
refactor: create /views folder
refactor: move xblock view functions to xblock_services
fix: tests
fix: tests
refactor: move xblock API endpoint to contentstore
* docs: add explanatory comment to new xblock_service
* feat: add feature flag for enabling content editing api
* feat: raise 404 if studio content api is disabled
* tests: test xblock endpoint
* test: make all post tests work
* test: check that xblock_handler receives correct args
* refactor: create util mixin for course factories with staff
* refactor: extract course staff authorization tests
* refactor: extract tests to api view testcase class
* test: add get tests
* test: fix tests
* test: fix tests
* test: fix tests
* test: add all crud tests
* fix: refactor to fix tests
* fix: merge conflict
* fix: merge conflict
* fix: tests after merge
* fix: json request decorator
* fix: lint
* fix: lint
* fix: lint
* fix: lint
* fix: new test files
* fix: lint
* fix: lint and apply PR suggestions
* fix: lint
* fix: lint
* fix: lint
* fix: lint
* fix: lint
* fix: lint
An exam due date can be inferred from the end date of the course if the exam does not have a due date. In the legacy proctoring system (the edx-proctoring plugin), this inference is made in the proctoring code by calling the edx-when API. This is possible because edx-proctoring is a plugin that's installed into the edx-platform, into which edx-when is also installed.
In the new exams service, we do not want to call to the LMS to get due date information from edx-when. This poses a number of problems, not all of which are solved by this commit. This commit allows the exams service to infer a due date for an exam if that exam does not have a due date at the subsection level.
Note that this is a departure from edx-proctoring. This also opts out exams powered by the new edx-exams service from personalized learner schedules (PLS)/relative dates, because we no longer consider the pacing type of the course.
Call into the exam service instead of the edx-proctoring plugin on course publish if the course_apps.exams_ida course waffle flag is enabled. This is an early step in moving away from edx-proctoring
