Persit errors golang

errors.go

package errorstore

import "github.com/boltdb/bolt"

var (
	errName = []byte("error")
)

type ErrorPersistance interface {
	SetError(key, value string)
	GetError(key string) string
	RemoveError(key string)
}

type errorStore struct {
	db *bolt.DB
}

func NewErrorPersistence(storage *bolt.DB) ErrorPersistance {
	datastorage := &errorStore{
		db: storage,
	}
	return datastorage
}

func (e *errorStore) SetError(key, value string) {
	err := e.db.Update(func(tx *bolt.Tx) error {
		buck, _ := tx.CreateBucketIfNotExists(errName)
		return buck.Put([]byte(key), []byte(value))
	})
	if err != nil {
		Log.Println("Couldn't set error")
	}
}

func (e *errorStore) RemoveError(key string) {
	err := e.db.Update(func(tx *bolt.Tx) error {
		buck, _ := tx.CreateBucketIfNotExists(errName)
		return buck.Delete([]byte(key))
	})
	if err != nil {
		Log.Println("Couldn't remove key")
	}
}

func (e *errorStore) GetError(key string) string {
	var value string
	err := e.db.View(func(tx *bolt.Tx) error {
		buck := tx.Bucket(errName)
		if buck == nil {
			return bolt.ErrBucketNotFound
		}
		value = string(buck.Get([]byte(key)))
		return nil
	})
	if err != nil {
		return ""
	}
	return value
}