GRPCRoute doesn't work

[Christoph-Raab]

Describe the bug

The default GRPCRoute doesn't match the spec.

At least one of Service and Method MUST be a non-empty string.

https://gateway-api.sigs.k8s.io/reference/spec/#grpcmethodmatch

Related helm chart

argo-cd

Helm chart version

9.0.5

To Reproduce

server:
  grpcroute:
    enabled: true
    parentRefs:
      - name: example-gateway
        namespace: gateway-system
        sectionName: grpc

This will try to create a GRPCRoute with

    rules:
      - matches:
          - method:
              type: Exact

which will result in an error

GRPCRoute.gateway.networking.k8s.io "argocd-server-grpc" is invalid: spec.rules[0].matches[0].method: Invalid value: "object": One or both of 'service' or 'method' must be specified

This matches the docs spec, see first quote/link above.

Expected behavior

The default GRPCRoute, as described in docs should work out of the box. https://github.com/argoproj/argo-helm/tree/main/charts/argo-cd#gateway-api-with-grpc-support

I'm not sure, what the correct configuration would be here. I tried a RegularExpression regex to match all, but that broke the api completely.