support grpc reflection on APIs

[choo-stripe]

Signed-off-by: Josh Chorlton [email protected]

Description

Just registers the grpc server in servenv as part of the reflection API. This should allow us to run grpcurl ... list.

It's just a nice-to-have convenience thing. It's more useful as vitess combines servers into a single entrypoint with servers activated by flag, so we can trivially tell what RPCs are available without digging through source.

Related Issue(s)

N/A

Checklist

• [ x] Tests were added or are not required
• [ x] Documentation was added or is not required

Deployment Notes

I'd appreciate some help testing this. I tried to get a quick vitess server up and running just to make sure it didn't crash on boot. I couldn't find instructions, and couldn't find a grpc server that was trivial to start without e.g. a valid topo-srv running. Is there a good way to test this without hacking about in docker compose or other and getting the whole stack running?

[vmg]

Looking gucci. 👌

vmg@pop-os ~ [1]> grpcurl -plaintext localhost:15991 list
grpc.reflection.v1alpha.ServerReflection
vtgateservice.Vitess
vmg@pop-os ~> grpcurl -plaintext localhost:15991 list vtgateservice.Vitess
vtgateservice.Vitess.Execute
vtgateservice.Vitess.ExecuteBatch
vtgateservice.Vitess.ResolveTransaction
vtgateservice.Vitess.StreamExecute
vtgateservice.Vitess.VStream
vmg@pop-os ~ [1]> grpcurl -plaintext localhost:15991 describe vtgateservice.Vitess.Execute
vtgateservice.Vitess.Execute is a method:
rpc Execute ( .vtgate.ExecuteRequest ) returns ( .vtgate.ExecuteResponse );

[vmg]

@choo-stripe: in the future you can use the examples/local folder to set up a tiny Vitess deployment in your machine without using containers or anything. Very useful for testing! https://github.com/vitessio/vitess/tree/main/examples/local

[choo-stripe]

@choo-stripe: in the future you can use the examples/local folder to set up a tiny Vitess deployment in your machine without using containers or anything. Very useful for testing! https://github.com/vitessio/vitess/tree/main/examples/local

Oh, rad, TIL. This is exactly what I was looking for. Thanks!