sess_redis.go
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package session
import (
"github.com/garyburd/redigo/redis"
)
var redispder = &RedisProvider{}
var MAX_POOL_SIZE = 20
var redisPool chan redis.Conn
type RedisSessionStore struct {
c redis.Conn
sid string
}
func (rs *RedisSessionStore) Set(key, value interface{}) error {
//_, err := rs.c.Do("HSET", rs.sid, key, value)
_, err := rs.c.Do("HSET", rs.sid, key, value)
return err
}
func (rs *RedisSessionStore) Get(key interface{}) interface{} {
reply, err := rs.c.Do("HGET", rs.sid, key)
if err != nil {
return nil
}
return reply
}
func (rs *RedisSessionStore) Delete(key interface{}) error {
//_, err := rs.c.Do("HDEL", rs.sid, key)
_, err := rs.c.Do("HDEL", rs.sid, key)
return err
}
func (rs *RedisSessionStore) Flush() error {
_, err := rs.c.Do("DEL", rs.sid)
return err
}
func (rs *RedisSessionStore) SessionID() string {
return rs.sid
}
func (rs *RedisSessionStore) SessionRelease() {
rs.c.Close()
}
type RedisProvider struct {
maxlifetime int64
savePath string
}
func (rp *RedisProvider) connectInit() redis.Conn {
/*c, err := redis.Dial("tcp", rp.savePath)
if err != nil {
return nil
}
return c*/
//if redisPool == nil {
redisPool = make(chan redis.Conn, MAX_POOL_SIZE)
//}
if len(redisPool) == 0 {
go func() {
for i := 0; i < MAX_POOL_SIZE/2; i++ {
c, err := redis.Dial("tcp", rp.savePath)
if err != nil {
panic(err)
}
putRedis(c)
}
}()
}
return <-redisPool
}
func putRedis(conn redis.Conn) {
if redisPool == nil {
redisPool = make(chan redis.Conn, MAX_POOL_SIZE)
}
if len(redisPool) >= MAX_POOL_SIZE {
conn.Close()
return
}
redisPool <- conn
}
func (rp *RedisProvider) SessionInit(maxlifetime int64, savePath string) error {
rp.maxlifetime = maxlifetime
rp.savePath = savePath
return nil
}
func (rp *RedisProvider) SessionRead(sid string) (SessionStore, error) {
c := rp.connectInit()
//if str, err := redis.String(c.Do("GET", sid)); err != nil || str == "" {
if str, err := redis.String(c.Do("HGET", sid, sid)); err != nil || str == "" {
//c.Do("SET", sid, sid, rp.maxlifetime)
c.Do("HSET", sid, sid, rp.maxlifetime)
}
rs := &RedisSessionStore{c: c, sid: sid}
return rs, nil
}
func (rp *RedisProvider) SessionRegenerate(oldsid, sid string) (SessionStore, error) {
c := rp.connectInit()
if str, err := redis.String(c.Do("HGET", oldsid, oldsid)); err != nil || str == "" {
c.Do("HSET", oldsid, oldsid, rp.maxlifetime)
}
c.Do("RENAME", oldsid, sid)
rs := &RedisSessionStore{c: c, sid: sid}
return rs, nil
}
func (rp *RedisProvider) SessionDestroy(sid string) error {
c := rp.connectInit()
c.Do("DEL", sid)
return nil
}
func (rp *RedisProvider) SessionGC() {
return
}
func init() {
Register("redis", redispder)
}