🏷️ Task breakdown notes:

• add the GET /entities/items/{item_id}/labels route to our OpenAPI definition (@Silvan_WMDE creates task)
• implement ItemLabelsRetriever using a TermLookup (TermLookupLabelsRetriever) (@Muhammad_Yasser_Jazirahly_WMDE creates task)
  • create a ItemLabelsRetriever interface with a getLabels( ItemId $itemId ): ?TermList; method
• use case (GetItemLabels) happy path (@Jakob_WMDE creates task)
  • create and return success response using the data from the ItemLabelsRetriever, and revision metadata
• create a LabelsSerializer (we don't need a dedicated presenter) (@Silvan_WMDE creates task)
  • extract from ItemDataSerializer
  • use in ItemDataSerializer once done
• route handler (happy path only) (@Ollie.Shotton_WMDE creates task)
  • same middlewares as GetItemRouteHandler
  • calls json_encode on the serializer result
  • e2e tests
• validate request and error if item id is invalid (just uses the existing ItemIdValidator but still create a dedicated use case validator) (@Muhammad_Yasser_Jazirahly_WMDE creates task)
  • use case + route handler
  • e2e tests
• return appropriate response if the item is a redirect or does not exist (@Jakob_WMDE creates task)
  • use case + route handler
  • e2e tests
• spec tests (@Silvan_WMDE creates task)
• create a read model for labels (get rid of any TermList usage) (@Ollie.Shotton_WMDE creates task)

Looks great, thank you!

Change 889947 had a related patch set uploaded (by Jakob; author: Jakob):

[mediawiki/extensions/Wikibase@master] REST: Mark GET labels as production ready

https://gerrit.wikimedia.org/r/889947

Change 889947 merged by jenkins-bot:

[mediawiki/extensions/Wikibase@master] REST: Mark GET labels as production ready

https://gerrit.wikimedia.org/r/889947