/
baseline.go
59 lines (49 loc) · 1.08 KB
/
baseline.go
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package proxy
import (
"errors"
"strconv"
"github.com/gomodule/redigo/redis"
"github.com/alibaba/pairec/persist/redisdb"
)
func GetBaselineData(uid string, redisdb *redisdb.Redis, prefix string, size, retry int) (ret []string) {
if retry <= 0 {
return
}
conn := redisdb.Get()
defer conn.Close()
uidKey := "base_" + uid
value, err := redis.Int(conn.Do("GET", uidKey))
if err != nil {
if errors.Is(err, redis.ErrNil) {
value = 0
} else {
return
}
}
var keys []interface{}
for i := value; i < value+size; i++ {
keys = append(keys, prefix+strconv.Itoa(i))
}
strs, err := redis.Strings(conn.Do("MGET", keys...))
if err != nil {
if errors.Is(err, redis.ErrNil) {
conn.Do("SET", uidKey, 0, "EX", 21600)
retry--
return GetBaselineData(uid, redisdb, prefix, size, retry)
} else {
return
}
}
for _, s := range strs {
if s != "" {
ret = append(ret, s)
}
}
if len(ret) < size {
conn.Do("SET", uidKey, 0, "EX", 21600)
retry--
return GetBaselineData(uid, redisdb, prefix, size, retry)
}
conn.Do("SET", uidKey, value+size, "EX", 21600)
return
}