Validate creation of event group metadata descriptor

[tristanvuong2021]

No description provided.

[wfa-reviewable]

This change is 

[SanjayVas]

Reviewed 2 of 2 files at r2, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @tristanvuong2021)

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src/main/kotlin/org/wfanet/measurement/kingdom/service/api/v2alpha/EventGroupMetadataDescriptorsService.kt line 144 at r2 (raw file):

      ProtoReflection.buildDescriptors(listOf(request.eventGroupMetadataDescriptor.descriptorSet))
    } catch (e: DescriptorValidationException) {
      failGrpc(Status.INVALID_ARGUMENT) { "DescriptorSet is invalid" }

nit: include exception as cause for interceptor logging. Also use the field name as listed in the message definition if referencing a field.

Suggestion:

throw Status.INVALID_ARGUMENT.withCause(e).withDescription("descriptor_set is invalid").asRuntimeException()

[stevenwarejones]

Reviewed 1 of 2 files at r2, 1 of 1 files at r3, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @Marco-Premier)