[Wikidata-bugs] [Maniphest] [Created] T204469: WikibaseQualityConstraints should respect query service 429 header response.

[Addshore]

Addshore created this task. Addshore added projects: Wikidata, wikidata-tech-focus, Wikibase-Quality-Constraints. Restricted Application added a subscriber: Aklapper.

TASK DESCRIPTION

When the quality constraints API is hit repeatedly mediawiki will flood the query service with requests, and the result will be mediawiki will get banned as in T163642.
To avoid getting banned our requests should respect the header returned by the query service (suggested in T204267#4584397)

TBA more detials

BDD
GIVEN a query service related constraint is run
AND the query service sends a 429 response
AND a "Retry-after" header is present
THEN QualityConstraints should not run fresh constraint reports using the query service for that number of seconds

TBA more BDD if retry-after is not always present?

Links
429 details: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/429

Acceptance Criteria

• QualityConstraints looks at and respects the "Retry-after" header and 429 status
• The Retry-after back off is used across all
• TBA depending on if retry-after is not alway present

TASK DETAIL

https://phabricator.wikimedia.org/T204469

EMAIL PREFERENCES

https://phabricator.wikimedia.org/settings/panel/emailpreferences/

To: Addshore
Cc: Addshore, Aklapper, Lahi, Gq86, Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, LawExplorer, Agabi10, Wikidata-bugs, aude, Mbch331

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