mirror of
https://github.com/nezhahq/nezha.git
synced 2025-01-23 13:18:13 -05:00
400 lines
14 KiB
Go
400 lines
14 KiB
Go
package singleton
|
||
|
||
import (
|
||
"fmt"
|
||
"log"
|
||
"sort"
|
||
"strings"
|
||
"sync"
|
||
"time"
|
||
|
||
"github.com/naiba/nezha/model"
|
||
pb "github.com/naiba/nezha/proto"
|
||
)
|
||
|
||
const (
|
||
_CurrentStatusSize = 30 // 统计 15 分钟内的数据为当前状态
|
||
_StatusOk = "良好"
|
||
)
|
||
|
||
var ServiceSentinelShared *ServiceSentinel
|
||
|
||
type ReportData struct {
|
||
Data *pb.TaskResult
|
||
Reporter uint64
|
||
}
|
||
|
||
type _TodayStatsOfMonitor struct {
|
||
Up int
|
||
Down int
|
||
Delay float32
|
||
}
|
||
|
||
func NewServiceSentinel(serviceSentinelDispatchBus chan<- model.Monitor) {
|
||
ServiceSentinelShared = &ServiceSentinel{
|
||
serviceReportChannel: make(chan ReportData, 200),
|
||
serviceStatusToday: make(map[uint64]*_TodayStatsOfMonitor),
|
||
serviceCurrentStatusIndex: make(map[uint64]int),
|
||
serviceCurrentStatusData: make(map[uint64][]model.MonitorHistory),
|
||
latestDate: make(map[uint64]string),
|
||
lastStatus: make(map[uint64]string),
|
||
serviceResponseDataStoreCurrentUp: make(map[uint64]uint64),
|
||
serviceResponseDataStoreCurrentDown: make(map[uint64]uint64),
|
||
monitors: make(map[uint64]*model.Monitor),
|
||
sslCertCache: make(map[uint64]string),
|
||
// 30天数据缓存
|
||
monthlyStatus: make(map[uint64]*model.ServiceItemResponse),
|
||
dispatchBus: serviceSentinelDispatchBus,
|
||
}
|
||
ServiceSentinelShared.loadMonitorHistory()
|
||
|
||
year, month, day := time.Now().Date()
|
||
today := time.Date(year, month, day, 0, 0, 0, 0, time.Local)
|
||
|
||
var mhs []model.MonitorHistory
|
||
// 加载当日记录
|
||
DB.Where("created_at >= ?", today).Find(&mhs)
|
||
totalDelay := make(map[uint64]float32)
|
||
for i := 0; i < len(mhs); i++ {
|
||
if mhs[i].Successful {
|
||
ServiceSentinelShared.serviceStatusToday[mhs[i].MonitorID].Up++
|
||
totalDelay[mhs[i].MonitorID] += mhs[i].Delay
|
||
} else {
|
||
ServiceSentinelShared.serviceStatusToday[mhs[i].MonitorID].Down++
|
||
}
|
||
}
|
||
for id, delay := range totalDelay {
|
||
ServiceSentinelShared.serviceStatusToday[id].Delay = delay / float32(ServiceSentinelShared.serviceStatusToday[id].Up)
|
||
}
|
||
|
||
// 更新入库时间及当日数据入库游标
|
||
for k := range ServiceSentinelShared.monitors {
|
||
ServiceSentinelShared.latestDate[k] = time.Now().Format("02-Jan-06")
|
||
}
|
||
|
||
go ServiceSentinelShared.worker()
|
||
|
||
// 每日将游标往后推一天
|
||
_, err := Cron.AddFunc("0 0 0 * * *", ServiceSentinelShared.refreshMonthlyServiceStatus)
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
}
|
||
|
||
/*
|
||
使用缓存 channel，处理上报的 Service 请求结果，然后判断是否需要报警
|
||
需要记录上一次的状态信息
|
||
*/
|
||
type ServiceSentinel struct {
|
||
serviceResponseDataStoreLock sync.RWMutex
|
||
monitorsLock sync.RWMutex
|
||
serviceReportChannel chan ReportData
|
||
serviceStatusToday map[uint64]*_TodayStatsOfMonitor
|
||
serviceCurrentStatusIndex map[uint64]int
|
||
serviceCurrentStatusData map[uint64][]model.MonitorHistory
|
||
latestDate map[uint64]string
|
||
lastStatus map[uint64]string
|
||
serviceResponseDataStoreCurrentUp map[uint64]uint64
|
||
serviceResponseDataStoreCurrentDown map[uint64]uint64
|
||
monitors map[uint64]*model.Monitor
|
||
sslCertCache map[uint64]string
|
||
// 30天数据缓存
|
||
monthlyStatusLock sync.Mutex
|
||
monthlyStatus map[uint64]*model.ServiceItemResponse
|
||
// 服务监控调度计划任务
|
||
dispatchBus chan<- model.Monitor
|
||
}
|
||
|
||
func (ss *ServiceSentinel) refreshMonthlyServiceStatus() {
|
||
// 刷新数据防止无人访问
|
||
ss.LoadStats()
|
||
// 将数据往前刷一天
|
||
ss.monthlyStatusLock.Lock()
|
||
defer ss.monthlyStatusLock.Unlock()
|
||
for _, v := range ss.monthlyStatus {
|
||
for i := 0; i < len(v.Up)-1; i++ {
|
||
v.Up[i] = v.Up[i+1]
|
||
v.Down[i] = v.Down[i+1]
|
||
v.Delay[i] = v.Delay[i+1]
|
||
}
|
||
}
|
||
}
|
||
|
||
func (ss *ServiceSentinel) Dispatch(r ReportData) {
|
||
ss.serviceReportChannel <- r
|
||
}
|
||
|
||
func (ss *ServiceSentinel) Monitors() []*model.Monitor {
|
||
ss.monitorsLock.RLock()
|
||
defer ss.monitorsLock.RUnlock()
|
||
var monitors []*model.Monitor
|
||
for _, v := range ss.monitors {
|
||
monitors = append(monitors, v)
|
||
}
|
||
sort.SliceStable(monitors, func(i, j int) bool {
|
||
return monitors[i].ID < monitors[j].ID
|
||
})
|
||
return monitors
|
||
}
|
||
|
||
func (ss *ServiceSentinel) loadMonitorHistory() {
|
||
var monitors []*model.Monitor
|
||
DB.Find(&monitors)
|
||
var err error
|
||
ss.monitorsLock.Lock()
|
||
defer ss.monitorsLock.Unlock()
|
||
ss.monitors = make(map[uint64]*model.Monitor)
|
||
for i := 0; i < len(monitors); i++ {
|
||
task := *monitors[i]
|
||
monitors[i].CronJobID, err = Cron.AddFunc(task.CronSpec(), func() {
|
||
ss.dispatchBus <- task
|
||
})
|
||
if err != nil {
|
||
panic(err)
|
||
}
|
||
ss.monitors[monitors[i].ID] = monitors[i]
|
||
ss.serviceCurrentStatusData[monitors[i].ID] = make([]model.MonitorHistory, _CurrentStatusSize)
|
||
ss.serviceStatusToday[monitors[i].ID] = &_TodayStatsOfMonitor{}
|
||
}
|
||
|
||
year, month, day := time.Now().Date()
|
||
today := time.Date(year, month, day, 0, 0, 0, 0, time.Local)
|
||
|
||
ss.monthlyStatusLock.Lock()
|
||
defer ss.monthlyStatusLock.Unlock()
|
||
for i := 0; i < len(monitors); i++ {
|
||
ServiceSentinelShared.monthlyStatus[monitors[i].ID] = &model.ServiceItemResponse{
|
||
Monitor: monitors[i],
|
||
Delay: &[30]float32{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||
Up: &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||
Down: &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||
}
|
||
}
|
||
|
||
// 加载历史记录
|
||
var mhs []model.MonitorHistory
|
||
DB.Where("created_at >= ? AND created_at < ?", today.AddDate(0, 0, -29), today).Find(&mhs)
|
||
for i := 0; i < len(mhs); i++ {
|
||
dayIndex := 28 - (int(today.Sub(mhs[i].CreatedAt).Hours()) / 24)
|
||
if mhs[i].Successful {
|
||
ServiceSentinelShared.monthlyStatus[mhs[i].MonitorID].TotalUp++
|
||
ServiceSentinelShared.monthlyStatus[mhs[i].MonitorID].Delay[dayIndex] = (ServiceSentinelShared.monthlyStatus[mhs[i].MonitorID].Delay[dayIndex]*float32(ss.monthlyStatus[mhs[i].MonitorID].Up[dayIndex]) + mhs[i].Delay) / float32(ss.monthlyStatus[mhs[i].MonitorID].Up[dayIndex]+1)
|
||
ServiceSentinelShared.monthlyStatus[mhs[i].MonitorID].Up[dayIndex]++
|
||
} else {
|
||
ServiceSentinelShared.monthlyStatus[mhs[i].MonitorID].TotalDown++
|
||
ServiceSentinelShared.monthlyStatus[mhs[i].MonitorID].Down[dayIndex]++
|
||
}
|
||
}
|
||
}
|
||
|
||
func (ss *ServiceSentinel) OnMonitorUpdate(m model.Monitor) error {
|
||
ss.monitorsLock.Lock()
|
||
defer ss.monitorsLock.Unlock()
|
||
var err error
|
||
// 写入新任务
|
||
m.CronJobID, err = Cron.AddFunc(m.CronSpec(), func() {
|
||
ss.dispatchBus <- m
|
||
})
|
||
if err != nil {
|
||
return err
|
||
}
|
||
if ss.monitors[m.ID] != nil {
|
||
// 停掉旧任务
|
||
Cron.Remove(ss.monitors[m.ID].CronJobID)
|
||
} else {
|
||
// 新任务初始化数据
|
||
ss.monthlyStatusLock.Lock()
|
||
defer ss.monthlyStatusLock.Unlock()
|
||
ss.monthlyStatus[m.ID] = &model.ServiceItemResponse{
|
||
Monitor: &m,
|
||
Delay: &[30]float32{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||
Up: &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||
Down: &[30]int{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||
}
|
||
ss.serviceResponseDataStoreLock.Lock()
|
||
defer ss.serviceResponseDataStoreLock.Unlock()
|
||
ss.serviceCurrentStatusData[m.ID] = make([]model.MonitorHistory, _CurrentStatusSize)
|
||
ss.serviceStatusToday[m.ID] = &_TodayStatsOfMonitor{}
|
||
}
|
||
// 更新这个任务
|
||
ss.monitors[m.ID] = &m
|
||
return nil
|
||
}
|
||
|
||
func (ss *ServiceSentinel) OnMonitorDelete(id uint64) {
|
||
ss.serviceResponseDataStoreLock.Lock()
|
||
defer ss.serviceResponseDataStoreLock.Unlock()
|
||
delete(ss.serviceCurrentStatusIndex, id)
|
||
delete(ss.serviceCurrentStatusData, id)
|
||
delete(ss.latestDate, id)
|
||
delete(ss.lastStatus, id)
|
||
delete(ss.serviceResponseDataStoreCurrentUp, id)
|
||
delete(ss.serviceResponseDataStoreCurrentDown, id)
|
||
delete(ss.sslCertCache, id)
|
||
ss.monitorsLock.Lock()
|
||
defer ss.monitorsLock.Unlock()
|
||
// 停掉定时任务
|
||
Cron.Remove(ss.monitors[id].CronJobID)
|
||
delete(ss.monitors, id)
|
||
ss.monthlyStatusLock.Lock()
|
||
defer ss.monthlyStatusLock.Unlock()
|
||
delete(ss.monthlyStatus, id)
|
||
}
|
||
|
||
func (ss *ServiceSentinel) LoadStats() map[uint64]*model.ServiceItemResponse {
|
||
// 刷新最新一天的数据
|
||
ss.serviceResponseDataStoreLock.RLock()
|
||
defer ss.serviceResponseDataStoreLock.RUnlock()
|
||
ss.monthlyStatusLock.Lock()
|
||
defer ss.monthlyStatusLock.Unlock()
|
||
for k := range ss.monitors {
|
||
ss.monthlyStatus[k].Monitor = ss.monitors[k]
|
||
v := ss.serviceStatusToday[k]
|
||
ss.monthlyStatus[k].Up[29] = v.Up
|
||
ss.monthlyStatus[k].Down[29] = v.Down
|
||
ss.monthlyStatus[k].TotalUp += uint64(v.Up)
|
||
ss.monthlyStatus[k].TotalDown += uint64(v.Down)
|
||
ss.monthlyStatus[k].Delay[29] = v.Delay
|
||
}
|
||
// 最后 5 分钟的状态 与 monitor 对象填充
|
||
for k, v := range ss.serviceResponseDataStoreCurrentDown {
|
||
ss.monthlyStatus[k].CurrentDown = v
|
||
}
|
||
for k, v := range ss.serviceResponseDataStoreCurrentUp {
|
||
ss.monthlyStatus[k].CurrentUp = v
|
||
}
|
||
return ss.monthlyStatus
|
||
}
|
||
|
||
func getStateStr(percent uint64) string {
|
||
if percent == 0 {
|
||
return "无数据"
|
||
}
|
||
if percent > 95 {
|
||
return _StatusOk
|
||
}
|
||
if percent > 80 {
|
||
return "低可用"
|
||
}
|
||
return "故障"
|
||
}
|
||
|
||
func (ss *ServiceSentinel) worker() {
|
||
for r := range ss.serviceReportChannel {
|
||
if ss.monitors[r.Data.GetId()] == nil || ss.monitors[r.Data.GetId()].ID == 0 {
|
||
log.Printf("NEZAH>> 错误的服务监控上报 %+v", r)
|
||
continue
|
||
}
|
||
mh := model.PB2MonitorHistory(r.Data)
|
||
ss.serviceResponseDataStoreLock.Lock()
|
||
// 先查看是否到下一天
|
||
nowDate := time.Now().Format("02-Jan-06")
|
||
if nowDate != ss.latestDate[mh.MonitorID] {
|
||
// 清理前一天数据
|
||
ss.latestDate[mh.MonitorID] = nowDate
|
||
ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] = 0
|
||
ss.serviceResponseDataStoreCurrentDown[mh.MonitorID] = 0
|
||
ss.serviceStatusToday[mh.MonitorID].Delay = 0
|
||
ss.serviceStatusToday[mh.MonitorID].Up = 0
|
||
ss.serviceStatusToday[mh.MonitorID].Down = 0
|
||
}
|
||
// 写入当天状态
|
||
if mh.Successful {
|
||
ss.serviceStatusToday[mh.MonitorID].Delay = (ss.serviceStatusToday[mh.
|
||
MonitorID].Delay*float32(ss.serviceStatusToday[mh.MonitorID].Up) +
|
||
mh.Delay) / float32(ss.serviceStatusToday[mh.MonitorID].Up+1)
|
||
ss.serviceStatusToday[mh.MonitorID].Up++
|
||
} else {
|
||
ss.serviceStatusToday[mh.MonitorID].Down++
|
||
ServerLock.RLock()
|
||
log.Println("NEZHA>> 服务故障上报：", ss.monitors[mh.MonitorID].Target, "上报者：", ServerList[r.Reporter].Name, "错误信息：", mh.Data)
|
||
ServerLock.RUnlock()
|
||
}
|
||
// 写入当前数据
|
||
ss.serviceCurrentStatusData[mh.MonitorID][ss.serviceCurrentStatusIndex[mh.MonitorID]] = mh
|
||
ss.serviceCurrentStatusIndex[mh.MonitorID]++
|
||
// 更新当前状态
|
||
ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] = 0
|
||
ss.serviceResponseDataStoreCurrentDown[mh.MonitorID] = 0
|
||
for i := 0; i < len(ss.serviceCurrentStatusData[mh.MonitorID]); i++ {
|
||
if ss.serviceCurrentStatusData[mh.MonitorID][i].MonitorID > 0 {
|
||
if ss.serviceCurrentStatusData[mh.MonitorID][i].Successful {
|
||
ss.serviceResponseDataStoreCurrentUp[mh.MonitorID]++
|
||
} else {
|
||
ss.serviceResponseDataStoreCurrentDown[mh.MonitorID]++
|
||
}
|
||
}
|
||
}
|
||
var upPercent uint64 = 0
|
||
if ss.serviceResponseDataStoreCurrentDown[mh.MonitorID]+ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] > 0 {
|
||
upPercent = ss.serviceResponseDataStoreCurrentUp[mh.MonitorID] * 100 / (ss.serviceResponseDataStoreCurrentDown[mh.MonitorID] + ss.serviceResponseDataStoreCurrentUp[mh.MonitorID])
|
||
}
|
||
stateStr := getStateStr(upPercent)
|
||
// 数据持久化
|
||
if ss.serviceCurrentStatusIndex[mh.MonitorID] == _CurrentStatusSize {
|
||
ss.serviceCurrentStatusIndex[mh.MonitorID] = 0
|
||
if err := DB.Create(&model.MonitorHistory{
|
||
MonitorID: mh.MonitorID,
|
||
Delay: ss.serviceStatusToday[mh.MonitorID].Delay,
|
||
Successful: stateStr == _StatusOk,
|
||
Data: mh.Data,
|
||
}).Error; err != nil {
|
||
log.Println("NEZHA>> 服务监控数据持久化失败：", err)
|
||
}
|
||
}
|
||
if stateStr == "故障" || stateStr != ss.lastStatus[mh.MonitorID] {
|
||
ss.monitorsLock.RLock()
|
||
isNeedSendNotification := (ss.lastStatus[mh.MonitorID] != "" || stateStr == "故障") && ss.monitors[mh.MonitorID].Notify
|
||
ss.lastStatus[mh.MonitorID] = stateStr
|
||
if isNeedSendNotification {
|
||
go SendNotification(fmt.Sprintf("[服务%s] %s", stateStr, ss.monitors[mh.MonitorID].Name), true)
|
||
}
|
||
ss.monitorsLock.RUnlock()
|
||
}
|
||
ss.serviceResponseDataStoreLock.Unlock()
|
||
// SSL 证书报警
|
||
var errMsg string
|
||
if strings.HasPrefix(mh.Data, "SSL证书错误：") {
|
||
// 排除 i/o timeont、connection timeout、EOF 错误
|
||
if !strings.HasSuffix(mh.Data, "timeout") &&
|
||
!strings.HasSuffix(mh.Data, "EOF") &&
|
||
!strings.HasSuffix(mh.Data, "timed out") {
|
||
errMsg = mh.Data
|
||
}
|
||
} else {
|
||
var newCert = strings.Split(mh.Data, "|")
|
||
if len(newCert) > 1 {
|
||
if ss.sslCertCache[mh.MonitorID] == "" {
|
||
ss.sslCertCache[mh.MonitorID] = mh.Data
|
||
}
|
||
expiresNew, _ := time.Parse("2006-01-02 15:04:05 -0700 MST", newCert[1])
|
||
// 证书过期提醒
|
||
if expiresNew.Before(time.Now().AddDate(0, 0, 7)) {
|
||
errMsg = fmt.Sprintf(
|
||
"SSL证书将在七天内过期，过期时间：%s。",
|
||
expiresNew.Format("2006-01-02 15:04:05"))
|
||
}
|
||
// 证书变更提醒
|
||
var oldCert = strings.Split(ss.sslCertCache[mh.MonitorID], "|")
|
||
var expiresOld time.Time
|
||
if len(oldCert) > 1 {
|
||
expiresOld, _ = time.Parse("2006-01-02 15:04:05 -0700 MST", oldCert[1])
|
||
}
|
||
if oldCert[0] != newCert[0] && !expiresNew.Equal(expiresOld) {
|
||
ss.sslCertCache[mh.MonitorID] = mh.Data
|
||
errMsg = fmt.Sprintf(
|
||
"SSL证书变更，旧：%s, %s 过期；新：%s, %s 过期。",
|
||
oldCert[0], expiresOld.Format("2006-01-02 15:04:05"), newCert[0], expiresNew.Format("2006-01-02 15:04:05"))
|
||
}
|
||
}
|
||
}
|
||
if errMsg != "" {
|
||
ss.monitorsLock.RLock()
|
||
if ss.monitors[mh.MonitorID].Notify {
|
||
go SendNotification(fmt.Sprintf("[SSL] %s %s", ss.monitors[mh.MonitorID].Name, errMsg), true)
|
||
}
|
||
ss.monitorsLock.RUnlock()
|
||
}
|
||
}
|
||
}
|