UUID to base64

uuid-to-base64.go

package main

import (
	"encoding/base64"
	"fmt"
	"log"
	"os"

	uuid "github.com/satori/go.uuid"
)

func main() {
	id, _ := uuid.NewV4()
	fmt.Println("Original UUID\t", id.String())

	enc := encode(&id)
	fmt.Println("URL safe encoded", enc)

	dec, err := decode(enc)
	if err != nil {
		log.Println("Error decoding", enc)
		os.Exit(1)
	}
	fmt.Println("Decoded UUID\t", dec.String())
}

func encode(id *uuid.UUID) string {
	return base64.RawURLEncoding.EncodeToString(id.Bytes())
}

func decode(id string) (*uuid.UUID, error) {
	dec, err := base64.RawURLEncoding.DecodeString(id)
	if err != nil {
		return nil, err
	}
	decID, err := uuid.FromBytes(dec)
	if err != nil {
		return nil, err
	}
	return &decID, nil
}

Output:

Original UUID	 1473cb09-59fe-4bea-94a9-7bf05a662970
URL safe encoded FHPLCVn-S-qUqXvwWmYpcA
Decoded UUID	 1473cb09-59fe-4bea-94a9-7bf05a662970