Фади Хадж

syntax = "proto3";

package entity;

message Entity {
  // Kinds:
  //
  // * kaboom
  // * oops
  string kind = 1;

  message Kaboom { uint64 data = 1; }

  message Oops { uint64 data = 1; }

  Kaboom kaboom = 2;

  Oops oops = 3;
}

package main

import (	
	"github.com/golang/protobuf/proto"
	
	"pathtopkg/entity"
)

func main() {
	var e entity.Entity

	err := proto.Unmarshal(buf, &e)
	if err != nil {
		panic(err)
	}

	switch e.Kind {
	case "kaboom":
		// Kaboom
	case "oops":
		// Oops
	default:
		panic("Invalid kind")
	}
}