/
persistent.go
84 lines (75 loc) · 2.19 KB
/
persistent.go
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/*
* MIT License
*
* Copyright (c) 2018 Igor Konovalov
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package yobit
import (
"encoding/gob"
"bytes"
"github.com/syndtr/goleveldb/leveldb"
"net/url"
"net/http"
)
type LocalStorage struct {
db *leveldb.DB
}
func NewStorage() *LocalStorage {
ldb, err := leveldb.OpenFile("data/db", nil)
if err != nil {
fatal(err)
}
return &LocalStorage{db: ldb}
}
func (s *LocalStorage) Release() {
s.db.Close()
}
func (s *LocalStorage) SaveCookies(url *url.URL, cookies []*http.Cookie) {
key, _ := encode(url)
val, _ := encode(cookies)
s.db.Put(key, val, nil)
}
func (s *LocalStorage) LoadCookies(url *url.URL) []*http.Cookie {
key, _ := encode(url)
val, _ := s.db.Get(key, nil)
var cookies []*http.Cookie
decode(val, &cookies)
return cookies
}
func encode(val interface{}) ([]byte, error) {
var buf bytes.Buffer
encoder := gob.NewEncoder(&buf)
err := encoder.Encode(val)
if err != nil {
return nil, err
}
readyBytes := buf.Bytes()
return readyBytes, nil
}
func decode(bVal []byte, val interface{}) error {
bufRef := bytes.NewBuffer(bVal)
dec := gob.NewDecoder(bufRef)
err := dec.Decode(val)
if err != nil {
return err
}
return nil
}