GRPC的反射机制
2024-01-01 本文已影响0人
robertzhai
install
main.go
package main
import (
"context"
"flag"
"fmt"
"log"
"net"
"google.golang.org/grpc"
pb "google.golang.org/grpc/examples/helloworld/helloworld"
"google.golang.org/grpc/reflection"
)
var (
port = flag.Int("port", 50051, "The server port")
)
// server is used to implement helloworld.GreeterServer.
type server struct {
pb.UnimplementedGreeterServer
}
// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
log.Printf("Received: %v", in.GetName())
return &pb.HelloReply{Message: "Hello " + in.GetName()}, nil
}
func main() {
flag.Parse()
lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *port))
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
s := grpc.NewServer()
pb.RegisterGreeterServer(s, &server{})
reflection.Register(s) // 注册反射服务
log.Printf("server listening at %v", lis.Addr())
if err := s.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}
test
- go run main.go
- grpcurl --plaintext -d '{"name":"vearne"}' 127.0.0.1:50051 helloworld.Greeter/SayHello
{
"message": "Hello vearne"
}
- grpcurl --plaintext 127.0.0.1:50051 describe helloworld.Greeter.SayHello
helloworld.Greeter.SayHello is a method:
