140 lines
2.8 KiB
Go
140 lines
2.8 KiB
Go
package session
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import (
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"io/ioutil"
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"os"
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"path"
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"path/filepath"
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"sync"
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"time"
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)
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var (
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filepder = &FileProvider{}
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gcmaxlifetime int64
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)
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type FileSessionStore struct {
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f *os.File
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sid string
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lock sync.RWMutex
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values map[interface{}]interface{}
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}
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func (fs *FileSessionStore) Set(key, value interface{}) error {
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fs.lock.Lock()
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defer fs.lock.Unlock()
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fs.values[key] = value
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fs.updatecontent()
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return nil
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}
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func (fs *FileSessionStore) Get(key interface{}) interface{} {
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fs.lock.RLock()
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defer fs.lock.RUnlock()
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if v, ok := fs.values[key]; ok {
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return v
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} else {
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return nil
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}
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return nil
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}
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func (fs *FileSessionStore) Delete(key interface{}) error {
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fs.lock.Lock()
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defer fs.lock.Unlock()
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delete(fs.values, key)
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fs.updatecontent()
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return nil
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}
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func (fs *FileSessionStore) SessionID() string {
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return fs.sid
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}
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func (fs *FileSessionStore) SessionRelease() {
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fs.f.Close()
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}
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func (fs *FileSessionStore) updatecontent() {
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b, err := encodeGob(fs.values)
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if err != nil {
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return
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}
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fs.f.Truncate(0)
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fs.f.Seek(0, 0)
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fs.f.Write(b)
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}
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type FileProvider struct {
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maxlifetime int64
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savePath string
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}
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func (fp *FileProvider) SessionInit(maxlifetime int64, savePath string) error {
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fp.maxlifetime = maxlifetime
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fp.savePath = savePath
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return nil
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}
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func (fp *FileProvider) SessionRead(sid string) (SessionStore, error) {
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err := os.MkdirAll(path.Join(fp.savePath, string(sid[0]), string(sid[1])), 0777)
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if err != nil {
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println(err.Error())
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}
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_, err = os.Stat(path.Join(fp.savePath, string(sid[0]), string(sid[1]), sid))
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var f *os.File
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if err == nil {
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f, err = os.OpenFile(path.Join(fp.savePath, string(sid[0]), string(sid[1]), sid), os.O_RDWR, 0777)
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} else if os.IsNotExist(err) {
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f, err = os.Create(path.Join(fp.savePath, string(sid[0]), string(sid[1]), sid))
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} else {
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return nil, err
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}
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os.Chtimes(path.Join(fp.savePath, string(sid[0]), string(sid[1]), sid), time.Now(), time.Now())
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var kv map[interface{}]interface{}
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b, err := ioutil.ReadAll(f)
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if err != nil {
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return nil, err
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}
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if len(b) == 0 {
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kv = make(map[interface{}]interface{})
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} else {
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kv, err = decodeGob(b)
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if err != nil {
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return nil, err
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}
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}
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f.Close()
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f, err = os.OpenFile(path.Join(fp.savePath, string(sid[0]), string(sid[1]), sid), os.O_WRONLY|os.O_CREATE, 0777)
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ss := &FileSessionStore{f: f, sid: sid, values: kv}
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return ss, nil
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}
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func (fp *FileProvider) SessionDestroy(sid string) error {
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os.Remove(path.Join(fp.savePath))
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return nil
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}
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func (fp *FileProvider) SessionGC() {
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gcmaxlifetime = fp.maxlifetime
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filepath.Walk(fp.savePath, gcpath)
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}
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func gcpath(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if info.IsDir() {
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return nil
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}
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if (info.ModTime().Unix() + gcmaxlifetime) < time.Now().Unix() {
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os.Remove(path)
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}
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return nil
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}
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func init() {
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Register("file", filepder)
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}
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