Schedule fetching canvas groups rosters

[marcospri]

Use the same logic as for assignments and courses.

For:

• Fetch rosters for segments (courses and sections) #6902

Testing

• Truncate any segment rosters you might have.

truncate lms_segment_roster ;
TRUNCATE TABLE

• Launch an LTI1.3 groups assignment

https://hypothesis.instructure.com/courses/319/assignments/3336

• On make shell, schedule fetching rosters

from lms.tasks.roster import schedule_fetching_rosters
schedule_fetching_rosters.delay()

segment roster fetching is scheduled:

worker (stderr)      | [2024-12-09 10:09:17,408: INFO/ForkPoolWorker-1] lms.tasks.roster.fetch_segment_roster[3da79f05-6966-4626-a447-1ba2c3a9898c] Task lms.tasks.roster.fetch_segment_roster[3da79f05-6966-4626-a447-1ba2c3a9898c] succeeded in 0.6005973350256681s: None
worker (stderr)      | [2024-12-09 10:09:17,531: INFO/ForkPoolWorker-2] lms.tasks.roster.fetch_segment_roster[b947bcf5-1c92-4557-84f0-385c1a0ca838] Task lms.tasks.roster.fetch_segment_roster[b947bcf5-1c92-4557-84f0-385c1a0ca838] succeeded in 0.7232479890226386s: None

• We have now roster data for those segments on the DB:

select name, lms_user_id from lms_segment_roster join lms_segment on lms_segment.id = lms_segment_id;
  name   | lms_user_id 
---------+-------------
 Group 2 |        2054
 Group 2 |        2055
 Group 2 |        2056
 Group 1 |        2050
(4 rows)

• Schedule it again:

schedule_fetching_rosters.delay()

No segment roster fetch is scheduled now.

• Remove task_done rows

truncate task_done ; 

• Schedule the fetch again, nothing happens yet

• Change the date of the existing roster:

 update lms_segment_roster set updated = now() - '1 month'::interval;

• Schedule again, this time both rosters are re-fetched

• Lets now remove the task done and mark the roster as old:

truncate task_done ;
update lms_segment_roster set updated = now() - '1 month'::interval;

• We'll also mark the launch event on the course as old:

 update event set timestamp = now() - '1 month'::interval where id in (select event.id from event join grouping on course_id = grouping.id where lms_name = 'LTI 1.3 Testing' order by timestamp desc limit 1);

• Scheduling the fetching again doesn't trigger a segment roster fetch this time.

[marcospri]

This is very similar to the existing assignment and course schedulers.

[marcospri]

Key for segments

[marcospri]

We based this on any launches on the courses the segments belong to.

[marcospri]

We are limiting segments to only "canvas_group"s only

[marcospri]

Fix existing comment.

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ ExternalRequestError: ExternalRequestError(message=None, request=Request(method='GET', url='https://umsystem.instructur... lms.tasks.roster.fetch_segment_roster View Issue
• ‼️ ExternalRequestError: ExternalRequestError(message=None, request=Request(method='POST', url='https://sso.canvaslms.com/... lms.tasks.roster.fetch_segment_roster View Issue

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