Allow setting up grpcreflection for dynamic schemas

[rauanmayemir]

Currently connectrpc.com/grpcreflect will not work with dynamic schemas.
It defers to protoregistry.GlobalFiles and even if I want to specify my own types, it is not trivial as I have to re-type all the things from under the hood to set up a custom Reflector.

[rauanmayemir]

Correction, I cannot create a custom reflector with staticNames being private.

[jhump]

@rauanmayemir, the Namer interface is a simple single-method. You don't need staticNames. You can just provide your own implementation.

type names []string
func (n names) Names() []string {
    return n
}

[rauanmayemir]

So I could actually inject my own implementation of Reflector, I'll try it then.

[rauanmayemir]

While I can easily re-implement the namer part, almost everything is needed to be re-implemented as well due to private types: reflector, resolver, options.

[jhump]

I don't really understand what you are trying to do. You can easily use this repo with dynamic schemas using NewReflector and passing WithExtensionResolver and WithDescriptorResolver options, to provide custom resolvers for your dynamic schemas. The custom Namer can be used to customize the names returned from ListServices requests.

[rauanmayemir]

Oh, let me try that. Yes, that's what I needed but only looked into the function implementations without accounting for options.

[rauanmayemir]

It turned out to be trivial, thank you. 🙌