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redis_mgr.go
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/
redis_mgr.go
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package sessions
import (
"bytes"
"context"
"encoding/gob"
"fmt"
"github.com/go-redis/redis/v8"
"time"
)
var rdb *redis.Client
type redisMgr struct {
}
func newRedisMgr(client *redis.Client) SessionMgr {
rdb = client
return &redisMgr{}
}
const (
prefixData = "cookie:data:"
prefixValue = "cookie:value:"
)
func (r *redisMgr) GetSession(cookValue string) (session Session) {
buf, err := rdb.Get(context.TODO(), prefixData+cookValue).Bytes()
if err != nil && err != redis.Nil {
panic(fmt.Sprintf("get data error: %s", err.Error()))
}
if len(buf) == 0 {
return nil
}
var redisSession redisSession
dec := gob.NewDecoder(bytes.NewBuffer(buf))
err = dec.Decode(&redisSession)
if err != nil {
panic(fmt.Sprintf("err:%s", err.Error()))
}
return &redisSession
}
func (r *redisMgr) CreateSession(cookValue string, valueType valueType, expire int) (session Session) {
session = newRedisSession(cookValue, valueType, expire)
var buf bytes.Buffer
err := gob.NewEncoder(&buf).Encode(session)
if err != nil {
panic(fmt.Sprintf("Encode session err:%s", err))
}
_, err = rdb.Set(context.TODO(), prefixData+cookValue, buf.Bytes(), time.Duration(0)).Result()
rdb.Expire(context.TODO(), prefixData+cookValue, time.Second*time.Duration(expire))
if err != nil {
panic(fmt.Sprintf("set []byte session err:%s", err))
}
return
}