main.go

ackage main

import (
    "log"
    "net"

    pb "github.com/kelseyhightower/helloworld/helloworld"
    "golang.org/x/net/context"
    "google.golang.org/grpc"
)

type server struct{}

func (s *server) SayHello(ctx context.Context, request *pb.Request) (*pb.Response, error) {
    return &pb.Response{Message: "Hello " + request.Name}, nil
}

func main() {
    log.Println("Helloworld service starting...")
    ln, err := net.Listen("tcp", ":10000")
    if err != nil {
        log.Fatalf("failed to listen: %v", err)
    }

    interceptorOption := grpc.UnaryInterceptor(func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
        log.Println(info.FullMethod)
        return handler(ctx, req)
    })

    s := grpc.NewServer(interceptorOption)
    pb.RegisterGreeterServer(s, &server{})
    log.Println("Helloworld service started successfully.")
    s.Serve(ln)
}