This gist shows how to reflect a struct in GoLang :)

reflection.go

package main 

import (
	"fmt"
	"reflect"
)

type Cep struct {
	Number string
}

type Address struct {
	Street string
	Cep Cep
}

type User struct {
	Username string 
	Age int
	Address Address
}

func attributes(f interface{})  {
	
	ifv := reflect.ValueOf(f)
	ift := reflect.TypeOf(f)

	//r := reflect.ValueOf(f)

	for i := 0; i < ift.NumField(); i++ {
		v := ifv.Field(i)
		tf := ift.Field(i)

		 k := v.Kind(); switch k {
			case reflect.Int:
			    fmt.Printf("%v %v %v", v, k, tf.Name)

			case reflect.Float64:
			    fmt.Printf("%v %v %v", k, tf.Name)

			case reflect.String:
			    fmt.Printf("%v %v %v", v, k, tf.Name)

			case reflect.Struct:  
				{
					fmt.Println()
					fmt.Println("Struct", k, tf.Name)
					attributes(v.Interface())
				}
			default:
			    fmt.Printf("I don't know, ask stackoverflow!")
		}

		fmt.Println()
	}
}

func main(){

	user := User{Username:"lucasrpb", Age: 26, Address: Address{Street: "Av. Brasil", Cep: Cep{Number: "123"}}}

	attributes(user)

}