improve grpcx (#2522)

example/rpc/grpcx/basic/controller/helloworld.go

@@ -0,0 +1,27 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package controller
+
+import (
+	"context"
+
+	"github.com/gogf/gf/contrib/rpc/grpcx/v2"
+	"github.com/gogf/gf/example/rpc/grpcx/basic/protobuf"
+)
+
+type Controller struct {
+	protobuf.UnimplementedGreeterServer
+}
+
+func Register(s *grpcx.GrpcServer) {
+	protobuf.RegisterGreeterServer(s.Server, &Controller{})
+}
+
+// SayHello implements helloworld.GreeterServer
+func (s *Controller) SayHello(ctx context.Context, in *protobuf.HelloRequest) (*protobuf.HelloReply, error) {
+	return &protobuf.HelloReply{Message: "Hello " + in.GetName()}, nil
+}