61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package model
|
||
|
||
import (
|
||
"github.com/HFO4/cloudreve/pkg/cache"
|
||
"github.com/jinzhu/gorm"
|
||
"strconv"
|
||
"time"
|
||
)
|
||
|
||
// StoragePack 容量包模型
|
||
type StoragePack struct {
|
||
// 表字段
|
||
gorm.Model
|
||
Name string
|
||
UserID uint
|
||
ActiveTime *time.Time
|
||
ExpiredTime *time.Time `gorm:"index:expired"`
|
||
Size uint64
|
||
}
|
||
|
||
// GetAvailablePackSize 返回给定用户当前可用的容量包总容量
|
||
func (user *User) GetAvailablePackSize() uint64 {
|
||
var (
|
||
packs []StoragePack
|
||
total uint64
|
||
firstExpire *time.Time
|
||
timeNow = time.Now()
|
||
ttl int64
|
||
)
|
||
|
||
// 尝试从缓存中读取
|
||
cacheKey := "pack_size_" + strconv.FormatUint(uint64(user.ID), 10)
|
||
if total, ok := cache.Get(cacheKey); ok {
|
||
return total.(uint64)
|
||
}
|
||
|
||
// 查找所有有效容量包
|
||
DB.Where("expired_time > ? AND user_id = ?", timeNow, user.ID).Find(&packs)
|
||
|
||
// 计算总容量, 并找到其中最早的过期时间
|
||
for _, v := range packs {
|
||
total += v.Size
|
||
if firstExpire == nil {
|
||
firstExpire = v.ExpiredTime
|
||
continue
|
||
}
|
||
if v.ExpiredTime != nil && firstExpire.After(*v.ExpiredTime) {
|
||
firstExpire = v.ExpiredTime
|
||
}
|
||
}
|
||
|
||
// 用最早的过期时间计算缓存TTL，并写入缓存
|
||
if firstExpire != nil {
|
||
ttl = firstExpire.Unix() - timeNow.Unix()
|
||
if ttl > 0 {
|
||
_ = cache.Set(cacheKey, total, int(ttl))
|
||
}
|
||
}
|
||
|
||
return total
|
||
}
|