session

1. session move from astaxie/session to beego/session
2. support 4 type session

session/sess_mysql.go

@@ -0,0 +1,125 @@
+package session
+
+//CREATE TABLE `session` (
+//  `session_key` char(64) NOT NULL,
+//  `session_data` blob,
+//  `session_expiry` int(11) unsigned NOT NULL,
+//  PRIMARY KEY (`session_key`)
+//) ENGINE=MyISAM DEFAULT CHARSET=utf8;
+
+import (
+	"database/sql"
+	_ "github.com/go-sql-driver/mysql"
+	"sync"
+	"time"
+)
+
+var mysqlpder = &MysqlProvider{}
+
+type MysqlSessionStore struct {
+	c      *sql.DB
+	sid    string
+	lock   sync.RWMutex
+	values map[interface{}]interface{}
+}
+
+func (st *MysqlSessionStore) Set(key, value interface{}) error {
+	st.lock.Lock()
+	defer st.lock.Unlock()
+	st.values[key] = value
+	st.updatemysql()
+	return nil
+}
+
+func (st *MysqlSessionStore) Get(key interface{}) interface{} {
+	st.lock.RLock()
+	defer st.lock.RUnlock()
+	if v, ok := st.values[key]; ok {
+		return v
+	} else {
+		return nil
+	}
+	return nil
+}
+
+func (st *MysqlSessionStore) Delete(key interface{}) error {
+	st.lock.Lock()
+	defer st.lock.Unlock()
+	delete(st.values, key)
+	st.updatemysql()
+	return nil
+}
+
+func (st *MysqlSessionStore) SessionID() string {
+	return st.sid
+}
+
+func (st *MysqlSessionStore) updatemysql() {
+	b, err := encodeGob(st.values)
+	if err != nil {
+		return
+	}
+	st.c.Exec("UPDATE session set `session_data`= ? where session_key=?", b, st.sid)
+}
+
+func (st *MysqlSessionStore) SessionRelease() {
+	st.c.Close()
+}
+
+type MysqlProvider struct {
+	maxlifetime int64
+	savePath    string
+}
+
+func (mp *MysqlProvider) connectInit() *sql.DB {
+	db, e := sql.Open("mysql", mp.savePath)
+	if e != nil {
+		return nil
+	}
+	return db
+}
+
+func (mp *MysqlProvider) SessionInit(maxlifetime int64, savePath string) error {
+	mp.maxlifetime = maxlifetime
+	mp.savePath = savePath
+	return nil
+}
+
+func (mp *MysqlProvider) SessionRead(sid string) (SessionStore, error) {
+	c := mp.connectInit()
+	row := c.QueryRow("select session_data from session where session_key=?", sid)
+	var sessiondata []byte
+	err := row.Scan(&sessiondata)
+	if err == sql.ErrNoRows {
+		c.Exec("insert into session(`session_key`,`session_data`,`session_expiry`) values(?,?,?)", sid, "", time.Now().Unix())
+	}
+	var kv map[interface{}]interface{}
+	if len(sessiondata) == 0 {
+		kv = make(map[interface{}]interface{})
+	} else {
+		kv, err = decodeGob(sessiondata)
+		if err != nil {
+			return nil, err
+		}
+	}
+	rs := &MysqlSessionStore{c: c, sid: sid, values: kv}
+	return rs, nil
+}
+
+func (mp *MysqlProvider) SessionDestroy(sid string) error {
+	c := mp.connectInit()
+	c.Exec("DELETE FROM session where session_key=?", sid)
+	c.Close()
+	return nil
+}
+
+func (mp *MysqlProvider) SessionGC() {
+	c := mp.connectInit()
+	c.Exec("DELETE from session where session_expiry < ?", time.Now().Unix()-mp.maxlifetime)
+	c.Close()
+	return
+}
+
+func init() {
+	Register("mysql", mysqlpder)
+}