How to hide specific services from grpc reflection?

Question

Im currently running a gRPC server with a reflection service as well to expose my services.

Server server = ServerBuilder.forPort(9092)
            .addService(ProtoReflectionService.newInstance())
            .addService(new StructServiceImpl())
            .addService(new ChatServiceImpl()).build();
    server.start();

Here, both my StructService and ChatService are exposed via reflection. I need to know whether there is a way to reflect only the ChatService and do not expose the StructService to the external parties?

Answer 1

At the moment ProtoReflectionService does not support this functionality. While not ideal, one thing you could do is running StructServiceImpl in a separate server:

Server structSerivceServer = ServerBuilder.forPort(9093)
    .addService(ProtoReflectionService.newInstance())
    .addService(new StructServiceImpl())
    .build();
structSerivceServer.start();

Server server = ServerBuilder.forPort(9092)
    .addService(new ChatServiceImpl())
    .build();
server.start();

Feel free to file a feature request at grpc-java GitHub.