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