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session.go
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session.go
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// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package sessions
import (
"sync"
"github.com/xiusin/pine/cache"
)
const (
Modified = iota
Destroyed
)
type Session struct {
sync.RWMutex
id string
data map[string]interface{}
status int
store AbstractSessionStore
cookie *Cookie
}
func newSession(id string, store AbstractSessionStore, cookie *Cookie) (*Session, error) {
entity := map[string]interface{}{}
sess := &Session{id: id, store: store, cookie: cookie}
if err := store.Get(sess.key(), &entity); err != nil && err != cache.ErrKeyNotFound {
return nil, err
}
sess.data = entity
sess.status = Modified
return sess, nil
}
func (sess *Session) GetId() string { return sess.id }
func (sess *Session) Set(key string, val interface{}) {
sess.Lock()
sess.data[key] = val
sess.Unlock()
}
func (sess *Session) All() map[string]interface{} {
sess.RLock()
defer sess.RUnlock()
return sess.data
}
func (sess *Session) Get(key string) interface{} {
sess.RLock()
defer sess.RUnlock()
return sess.data[key]
}
// Remove 移除某个key
func (sess *Session) Remove(key string) {
sess.Lock()
delete(sess.data, key)
sess.Unlock()
}
func (sess *Session) Save() error {
if sess.status == Destroyed {
return nil
}
err := sess.store.Save(sess.key(), &sess.data)
for k := range sess.data {
delete(sess.data, k)
}
sess.data = nil
return err
}
// Destroy 销毁整个sess信息
func (sess *Session) Destroy() error {
sess.Lock()
defer sess.Unlock()
sess.data = nil
sess.status = Destroyed
sess.cookie.Delete(sess.id)
return sess.store.Delete(sess.key())
}
// Has 检查是否存在Key
func (sess *Session) Has(key string) bool {
sess.RLock()
defer sess.RUnlock()
var exist bool
if sess.data != nil {
_, exist = sess.data[key]
}
return exist
}
// makeKey 存储session的key
func (sess *Session) key() string {
return "sess_" + sess.id
}