When multiple operations are passed in query, wrong operation is taken and the operationName is ignored

[upcFrost]

When working with multiple operations in one query (happens a lot when using browser-based gql clients for testing), the gateway responds with error adding scrub fields: could not find field for point. After a closer look, the targetSelection in the generateScrubFieldsWalk method contains only the first operation out of all present in the query.

The spec suggests that the operation should be taken by name: https://spec.graphql.org/October2021/#sec-Executing-Requests

The culprit is most likely the array selector here:

gateway/plan.go

Line 115 in 0ac544a

flatSelection, err := graphql.ApplyFragments(parsedQuery.Operations[0].SelectionSet, parsedQuery.Fragments)

the operationName should be passed in the PlanningContext in GetPlans and then used to select the correct operation

[JohnStarich]

Thanks for opening! I’ll take a look to see if I can reproduce.