refactor alert eval (#1616)

alert/eval/eval.go

@@ -69,14 +69,16 @@ func (arw *AlertRuleWorker) Start() {
 	if interval <= 0 {
 		interval = 10
 	}
+
+	ticker := time.NewTicker(time.Duration(interval) * time.Second)
 	go func() {
+		defer ticker.Stop()
 		for {
 			select {
 			case <-arw.quit:
 				return
-			default:
+			case <-ticker.C:
 				arw.Eval()
-				time.Sleep(time.Duration(interval) * time.Second)
 			}
 		}
 	}()

alert/mute/mute.go

@@ -52,12 +52,12 @@ func TimeNonEffectiveMuteStrategy(rule *models.AlertRule, event *models.AlertCur
 		if !strings.Contains(enableDaysOfWeek[i], triggerWeek) {
 			continue
 		}
-		if enableStime[i] <= enableEtime[i] {
+		if enableStime[i] < enableEtime[i] {
 			if triggerTime < enableStime[i] || triggerTime > enableEtime[i] {
 				continue
 			}
-		} else {
-			if triggerTime < enableStime[i] && triggerTime > enableEtime[i] {
+		} else if enableStime[i] > enableEtime[i] {
+			if triggerTime < enableStime[i] && triggerTime >= enableEtime[i] {
 				continue
 			}
 		}
@@ -165,7 +165,7 @@ func matchMute(event *models.AlertCurEvent, mute *models.AlertMute, clock ...int
 						break
 					}
 				} else {
-					if triggerTime < mute.PeriodicMutesJson[i].EnableStime || triggerTime >= mute.PeriodicMutesJson[i].EnableEtime {
+					if triggerTime >= mute.PeriodicMutesJson[i].EnableStime || triggerTime < mute.PeriodicMutesJson[i].EnableEtime {
 						matchTime = true
 						break
 					}

alert/process/process.go

@@ -296,7 +296,7 @@ func (p *Processor) fireEvent(event *models.AlertCurEvent) {
 		}
 
 		// 之前发送过告警了，这次是否要继续发送，要看是否过了通道静默时间
-		if event.LastEvalTime > fired.LastSentTime+int64(cachedRule.NotifyRepeatStep)*60 {
+		if event.LastEvalTime >= fired.LastSentTime+int64(cachedRule.NotifyRepeatStep)*60 {
 			if cachedRule.NotifyMaxNumber == 0 {
 				// 最大可以发送次数如果是0，表示不想限制最大发送次数，一直发即可
 				event.NotifyCurNumber = fired.NotifyCurNumber + 1

alert/record/prom_rule.go

@@ -54,14 +54,16 @@ func (rrc *RecordRuleContext) Start() {
 	if interval <= 0 {
 		interval = 10
 	}
+
+	ticker := time.NewTicker(time.Duration(interval) * time.Second)
 	go func() {
+		defer ticker.Stop()
 		for {
 			select {
 			case <-rrc.quit:
 				return
-			default:
+			case <-ticker.C:
 				rrc.Eval()
-				time.Sleep(time.Duration(interval) * time.Second)
 			}
 		}
 	}()