128 lines
2.7 KiB
Go
128 lines
2.7 KiB
Go
package session
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//CREATE TABLE `session` (
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// `session_key` char(64) NOT NULL,
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// `session_data` blob,
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// `session_expiry` int(11) unsigned NOT NULL,
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// PRIMARY KEY (`session_key`)
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//) ENGINE=MyISAM DEFAULT CHARSET=utf8;
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import (
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"database/sql"
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_ "github.com/go-sql-driver/mysql"
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"sync"
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"time"
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)
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var mysqlpder = &MysqlProvider{}
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type MysqlSessionStore struct {
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c *sql.DB
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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 (st *MysqlSessionStore) Set(key, value interface{}) error {
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st.lock.Lock()
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defer st.lock.Unlock()
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st.values[key] = value
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st.updatemysql()
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return nil
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}
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func (st *MysqlSessionStore) Get(key interface{}) interface{} {
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st.lock.RLock()
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defer st.lock.RUnlock()
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if v, ok := st.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 (st *MysqlSessionStore) Delete(key interface{}) error {
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st.lock.Lock()
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defer st.lock.Unlock()
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delete(st.values, key)
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st.updatemysql()
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return nil
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}
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func (st *MysqlSessionStore) SessionID() string {
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return st.sid
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}
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func (st *MysqlSessionStore) updatemysql() {
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if len(st.values) > 0 {
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b, err := encodeGob(st.values)
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if err != nil {
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return
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}
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st.c.Exec("UPDATE session set `session_data`= ? where session_key=?", b, st.sid)
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}
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}
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func (st *MysqlSessionStore) SessionRelease() {
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st.c.Close()
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}
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type MysqlProvider struct {
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maxlifetime int64
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savePath string
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}
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func (mp *MysqlProvider) connectInit() *sql.DB {
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db, e := sql.Open("mysql", mp.savePath)
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if e != nil {
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return nil
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}
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return db
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}
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func (mp *MysqlProvider) SessionInit(maxlifetime int64, savePath string) error {
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mp.maxlifetime = maxlifetime
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mp.savePath = savePath
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return nil
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}
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func (mp *MysqlProvider) SessionRead(sid string) (SessionStore, error) {
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c := mp.connectInit()
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row := c.QueryRow("select session_data from session where session_key=?", sid)
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var sessiondata []byte
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err := row.Scan(&sessiondata)
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if err == sql.ErrNoRows {
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c.Exec("insert into session(`session_key`,`session_data`,`session_expiry`) values(?,?,?)", sid, "", time.Now().Unix())
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}
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var kv map[interface{}]interface{}
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if len(sessiondata) == 0 {
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kv = make(map[interface{}]interface{})
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} else {
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kv, err = decodeGob(sessiondata)
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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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rs := &MysqlSessionStore{c: c, sid: sid, values: kv}
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return rs, nil
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}
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func (mp *MysqlProvider) SessionDestroy(sid string) error {
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c := mp.connectInit()
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c.Exec("DELETE FROM session where session_key=?", sid)
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c.Close()
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return nil
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}
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func (mp *MysqlProvider) SessionGC() {
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c := mp.connectInit()
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c.Exec("DELETE from session where session_expiry < ?", time.Now().Unix()-mp.maxlifetime)
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c.Close()
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return
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}
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func init() {
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Register("mysql", mysqlpder)
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}
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