T3MP3ST public launch build
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package model
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import (
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"slices"
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"strings"
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"time"
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"gorm.io/gorm"
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"github.com/nezhahq/nezha/pkg/utils"
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)
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const (
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RuleCoverAll = iota
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RuleCoverIgnoreAll
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)
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type NResult struct {
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N uint64
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}
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type Rule struct {
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// 指标类型，cpu、memory、swap、disk、net_in_speed、net_out_speed
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// net_all_speed、transfer_in、transfer_out、transfer_all、offline
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// transfer_in_cycle、transfer_out_cycle、transfer_all_cycle
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Type string `json:"type"`
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Min float64 `json:"min,omitempty" validate:"optional"` // 最小阈值 (百分比、字节 kb ÷ 1024)
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Max float64 `json:"max,omitempty" validate:"optional"` // 最大阈值 (百分比、字节 kb ÷ 1024)
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CycleStart *time.Time `json:"cycle_start,omitempty" validate:"optional"` // 流量统计的开始时间
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CycleInterval uint64 `json:"cycle_interval,omitempty" validate:"optional"` // 流量统计周期
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CycleUnit string `json:"cycle_unit,omitempty" enums:"hour,day,week,month,year" validate:"optional" default:"hour"` // 流量统计周期单位，默认hour,可选(hour, day, week, month, year)
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Duration uint64 `json:"duration,omitempty" validate:"optional"` // 持续时间 (秒)
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Cover uint64 `json:"cover"` // 覆盖范围 RuleCoverAll/IgnoreAll
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Ignore map[uint64]bool `json:"ignore,omitempty" validate:"optional"` // 覆盖范围的排除
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// 只作为缓存使用，记录下次该检测的时间
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NextTransferAt map[uint64]time.Time `json:"-"`
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LastCycleStatus map[uint64]bool `json:"-"`
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}
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func percentage(used, total uint64) float64 {
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if total == 0 {
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return 0
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}
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return float64(used) * 100 / float64(total)
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}
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// Snapshot 未通过规则返回 false, 通过返回 true
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func (u *Rule) Snapshot(cycleTransferStats *CycleTransferStats, server *Server, db *gorm.DB) bool {
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// 监控全部但是排除了此服务器
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if u.Cover == RuleCoverAll && u.Ignore[server.ID] {
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return true
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}
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// 忽略全部但是指定监控了此服务器
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if u.Cover == RuleCoverIgnoreAll && !u.Ignore[server.ID] {
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return true
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}
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// 循环区间流量检测 · 短期无需重复检测
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if u.IsTransferDurationRule() && u.NextTransferAt[server.ID].After(time.Now()) {
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return u.LastCycleStatus[server.ID]
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}
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var src float64
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switch u.Type {
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case "cpu":
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src = float64(server.State.CPU)
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case "gpu_max":
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src = slices.Max(server.State.GPU)
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case "memory":
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src = percentage(server.State.MemUsed, server.Host.MemTotal)
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case "swap":
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src = percentage(server.State.SwapUsed, server.Host.SwapTotal)
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case "disk":
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src = percentage(server.State.DiskUsed, server.Host.DiskTotal)
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case "net_in_speed":
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src = float64(server.State.NetInSpeed)
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case "net_out_speed":
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src = float64(server.State.NetOutSpeed)
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case "net_all_speed":
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src = float64(server.State.NetOutSpeed + server.State.NetOutSpeed)
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case "transfer_in":
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src = float64(server.State.NetInTransfer)
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case "transfer_out":
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src = float64(server.State.NetOutTransfer)
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case "transfer_all":
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src = float64(server.State.NetOutTransfer + server.State.NetInTransfer)
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case "offline":
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if server.LastActive.IsZero() {
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src = 0
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} else {
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src = float64(server.LastActive.Unix())
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}
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case "transfer_in_cycle":
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src = float64(utils.SubUintChecked(server.State.NetInTransfer, server.PrevTransferInSnapshot))
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if u.CycleInterval != 0 {
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var res NResult
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db.Model(&Transfer{}).Select("SUM(`in`) AS n").Where("datetime(`created_at`) >= datetime(?) AND server_id = ?", u.GetTransferDurationStart().UTC(), server.ID).Scan(&res)
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src += float64(res.N)
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}
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case "transfer_out_cycle":
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src = float64(utils.SubUintChecked(server.State.NetOutTransfer, server.PrevTransferOutSnapshot))
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if u.CycleInterval != 0 {
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var res NResult
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db.Model(&Transfer{}).Select("SUM(`out`) AS n").Where("datetime(`created_at`) >= datetime(?) AND server_id = ?", u.GetTransferDurationStart().UTC(), server.ID).Scan(&res)
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src += float64(res.N)
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}
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case "transfer_all_cycle":
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src = float64(utils.SubUintChecked(server.State.NetOutTransfer, server.PrevTransferOutSnapshot) + utils.SubUintChecked(server.State.NetInTransfer, server.PrevTransferInSnapshot))
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if u.CycleInterval != 0 {
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var res NResult
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db.Model(&Transfer{}).Select("SUM(`in`+`out`) AS n").Where("datetime(`created_at`) >= datetime(?) AND server_id = ?", u.GetTransferDurationStart().UTC(), server.ID).Scan(&res)
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src += float64(res.N)
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}
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case "load1":
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src = server.State.Load1
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case "load5":
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src = server.State.Load5
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case "load15":
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src = server.State.Load15
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case "tcp_conn_count":
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src = float64(server.State.TcpConnCount)
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case "udp_conn_count":
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src = float64(server.State.UdpConnCount)
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case "process_count":
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src = float64(server.State.ProcessCount)
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case "temperature_max":
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var temp []float64
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if server.State.Temperatures != nil {
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for _, tempStat := range server.State.Temperatures {
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if tempStat.Temperature != 0 {
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temp = append(temp, tempStat.Temperature)
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}
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}
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src = slices.Max(temp)
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}
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}
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// 循环区间流量检测 · 更新下次需要检测时间
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if u.IsTransferDurationRule() {
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seconds := max(1800*((u.Max-src)/u.Max), 180)
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if u.NextTransferAt == nil {
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u.NextTransferAt = make(map[uint64]time.Time)
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}
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if u.LastCycleStatus == nil {
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u.LastCycleStatus = make(map[uint64]bool)
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}
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u.NextTransferAt[server.ID] = time.Now().Add(time.Second * time.Duration(seconds))
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if (u.Max > 0 && src > u.Max) || (u.Min > 0 && src < u.Min) {
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u.LastCycleStatus[server.ID] = false
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} else {
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u.LastCycleStatus[server.ID] = true
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}
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if cycleTransferStats.ServerName[server.ID] != server.Name {
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cycleTransferStats.ServerName[server.ID] = server.Name
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}
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cycleTransferStats.Transfer[server.ID] = uint64(src)
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cycleTransferStats.NextUpdate[server.ID] = u.NextTransferAt[server.ID]
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// 自动更新周期流量展示起止时间
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cycleTransferStats.From = u.GetTransferDurationStart()
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cycleTransferStats.To = u.GetTransferDurationEnd()
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}
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if u.Type == "offline" && float64(time.Now().Unix())-src > 6 {
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return false
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} else if (u.Max > 0 && src > u.Max) || (u.Min > 0 && src < u.Min) {
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return false
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}
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return true
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}
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// IsTransferDurationRule 判断该规则是否属于周期流量规则 属于则返回true
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func (u *Rule) IsTransferDurationRule() bool {
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return strings.HasSuffix(u.Type, "_cycle")
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}
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func (u *Rule) IsOfflineRule() bool {
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return u.Type == "offline"
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}
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// GetTransferDurationStart 获取周期流量的起始时间
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func (u *Rule) GetTransferDurationStart() time.Time {
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// Accept uppercase and lowercase
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unit := strings.ToLower(u.CycleUnit)
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startTime := *u.CycleStart
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var nextTime time.Time
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switch unit {
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case "year":
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nextTime = startTime.AddDate(int(u.CycleInterval), 0, 0)
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(int(u.CycleInterval), 0, 0)
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}
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case "month":
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nextTime = startTime.AddDate(0, int(u.CycleInterval), 0)
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(0, int(u.CycleInterval), 0)
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}
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case "week":
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nextTime = startTime.AddDate(0, 0, 7*int(u.CycleInterval))
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(0, 0, 7*int(u.CycleInterval))
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}
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case "day":
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nextTime = startTime.AddDate(0, 0, int(u.CycleInterval))
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(0, 0, int(u.CycleInterval))
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}
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default:
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// For hour unit or not set.
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interval := 3600 * int64(u.CycleInterval)
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startTime = time.Unix(u.CycleStart.Unix()+(time.Now().Unix()-u.CycleStart.Unix())/interval*interval, 0)
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}
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return startTime
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}
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// GetTransferDurationEnd 获取周期流量结束时间
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func (u *Rule) GetTransferDurationEnd() time.Time {
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// Accept uppercase and lowercase
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unit := strings.ToLower(u.CycleUnit)
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startTime := *u.CycleStart
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var nextTime time.Time
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switch unit {
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case "year":
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nextTime = startTime.AddDate(int(u.CycleInterval), 0, 0)
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(int(u.CycleInterval), 0, 0)
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}
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case "month":
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nextTime = startTime.AddDate(0, int(u.CycleInterval), 0)
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(0, int(u.CycleInterval), 0)
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}
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case "week":
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nextTime = startTime.AddDate(0, 0, 7*int(u.CycleInterval))
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(0, 0, 7*int(u.CycleInterval))
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}
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case "day":
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nextTime = startTime.AddDate(0, 0, int(u.CycleInterval))
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for time.Now().After(nextTime) {
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startTime = nextTime
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nextTime = nextTime.AddDate(0, 0, int(u.CycleInterval))
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}
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default:
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// For hour unit or not set.
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interval := 3600 * int64(u.CycleInterval)
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startTime = time.Unix(u.CycleStart.Unix()+(time.Now().Unix()-u.CycleStart.Unix())/interval*interval, 0)
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nextTime = time.Unix(startTime.Unix()+interval, 0)
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}
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return nextTime
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}
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