GRPCRoute docs on matching rules are unclear

[rauanmayemir]

There are no examples or docs on specifying only the service name in matching rules like so:

  rules:
    - matches:
        - method:
            service: package.name.version.Service

There is a matching rule example for when you match by service name and header value, but nothing for arguably the most common use case of routing by only the service name.

[Nishant-k-sagar]

@rauanmayemir can you explain this issue little more, like what documentation updation are needed?

[rauanmayemir]

@Nishant-k-sagar currently it makes it look like I can't specify routes that will match only by the serviceName. It may seem trivial, but it is the most obvious use case and not having it as a first basic example is surprising to me.

It's like if HTTPRoute didn't have examples for /user and only had a list of /user/login, /user/logout, /user/profile, that would lead to wondering if I can group match or do I have to write out all the possible endpoints.

Maybe it's unrelated, but cilium implementation does not support the way to do it: cilium/cilium#34079