List user properties with permissionbolt and simplebolt

props.go

package main

import (
	"fmt"
	"github.com/coreos/bbolt"
	"github.com/xyproto/permissionbolt"
	"github.com/xyproto/simplebolt"
	"log"
	"os"
	"path"
	"strings"
)

// GetProps retrieves the properties for a given username
func GetProps(db *bolt.DB, username string) ([]string, error) {
	var props []string
	return props, (*bolt.DB)(db).View(func(tx *bolt.Tx) error {
		bucket := tx.Bucket([]byte("users"))
		if bucket == nil {
			return simplebolt.ErrBucketNotFound
		}
		// Loop through the keys
		return bucket.ForEach(func(byteKey, _ []byte) error {
			combinedKey := string(byteKey)
			if strings.HasPrefix(combinedKey, username+":") {
				fields := strings.SplitN(combinedKey, ":", 2)
				props = append(props, string(fields[1]))
			}
			return nil // Continue ForEach
		})
	})
}

// GetDB retrieves the underlying Bolt database from the permissionbolt.UserState
func GetDB(userstate *permissionbolt.UserState) *bolt.DB {
	return (*bolt.DB)(userstate.Database())
}

func main() {
	userstate, err := permissionbolt.NewUserState(path.Join(os.TempDir(), "bolt1.db"), true)
	if err != nil {
		log.Fatal(err)
	}
	defer userstate.Close()

	userstate.AddUser("bob", "hunter1", "bob@zombo.com")
	userstate.AddUser("roger", "hunter1", "bob@zombo.com")

	userstate.Users().Set("bob", "hello", "yes")

	if !userstate.HasUser("bob") {
		log.Fatalln("Error, user bob should exist")
	}

	db := GetDB(userstate)

	l, err := GetProps(db, "bob")
	fmt.Println(l, err)

	l, err = GetProps(db, "roger")
	fmt.Println(l, err)

	userstate.RemoveUser("bob")
	userstate.RemoveUser("roger")
}