Unable to register service to Orion Server

[cs-lexliu]

Context

The grpc.ServiceDesc has been exported from protoc-gen-go-grpc v1.1.0. The protoc-gen-orion generates the file that contains an unresolved reference to the unexported name of service desc.

Process

Use the Orion example.

Execute protoc -I. --go-grpc_out=. --go_out=. --orion_out=. simple.proto.

Environment

go version         1.17.6
protoc-gen-go-grpc v1.2.0
protoc-gen-orion   latest
protoc-gen-go      v1.27.1

Expected result

The simple service should be registered in Orion Serve, and simple_proto/simple.proto.orion.pb.go should not contain any error.

Current result

In simple_proto/simple.proto.orion.pb.go, we got a following error.

Unresolved reference '_SimpleService_serviceDesc'

Possible Fix

Follow the protoc-gen-go-grpc naming role in grpc/grpc-go#4035.
And modify the generating code.

Orion/protoc-gen-orion/orion.go

Line 262 in ec021a7

serviceDescVar := "_" + servName + "_serviceDesc"