change stats

src/server/engine/engine.go

@@ -54,6 +54,6 @@ func reportQueueSize() {
 	for {
 		time.Sleep(time.Second)
 
-		promstat.GaugeAlertQueueSize.WithLabelValues().Set(float64(EventQueue.Len()))
+		promstat.GaugeAlertQueueSize.Set(float64(EventQueue.Len()))
 	}
 }

src/server/stat/stat.go

@@ -43,12 +43,12 @@ var (
 	}, []string{"cluster"})
 
 	// 内存中的告警事件队列的长度
-	GaugeAlertQueueSize = prometheus.NewGaugeVec(prometheus.GaugeOpts{
+	GaugeAlertQueueSize = prometheus.NewGauge(prometheus.GaugeOpts{
 		Namespace: namespace,
 		Subsystem: subsystem,
 		Name:      "alert_queue_size",
 		Help:      "The size of alert queue.",
-	}, []string{})
+	})
 
 	// 数据转发队列，各个队列的长度
 	GaugeSampleQueueSize = prometheus.NewGaugeVec(prometheus.GaugeOpts{