How can I add JSON-based GRPC services, a.k.a unframed gRPC-JSON?

I wonder if it is possible to auto add Json based service whenever a GRPC service is added to server. This will helps organizations who want to migrate from Json base Rest apis server to Armeria-Grpc server.

For example, we have a grpc SomeGrpcService which have a rpc SayHello. And the path for SayHello GRPC service could be something like my.package/SomeGrpcService/SayHello.

With the following config, we could auto add a Rest version SayHello service while binding to the path of my.package/SomeGrpcService/Rest/SayHello.

 serverBuilder
            .service(
                (ServiceWithPathMappings<HttpRequest, HttpResponse>)
                    new GrpcServiceBuilder()
                        // This is the config of new proposed function
                        .enableRestService(true)
                        .addService(someGrpcService)
                        .supportedSerializationFormats(GrpcSerializationFormats.values())
                        .build()
           )

Then, by default, we assume the GRPC request and response of SayHello service is SayHelloRequest and SayHelloResponse. And to serve all client Json based Rest requests to the path of my.package/SomeGrpcService/Rest/SayHello via GRPC SayHello service by adding a layer which using @chokoswitch 's Buffer <-> JSON marshaller to convert to/from Json and GRPC request and response.

[anuraaga]

Yeah - the format is determined by the content type of the request. In fact, this is currently being the debug form for gRPC.

There is a bit of documentation here, if there’s anything not clear let me know so we can fix it 😃

http://line.github.io/armeria/server-grpc.html#unframed-requests

[trustin]

Updated the title of this issue to make it an answered question.