fix(metrics): customize bucket values & solve total request counter

internal/exporter/metrics.go

@@ -28,6 +28,8 @@ type Metrics struct {
 	metricDatabaseReady     *prometheus.Desc
 	metricRequestsTotal     *prometheus.Desc
 	metricRequestLatency    *prometheus.Desc
+
+	counter uint
 }
 
 func NewMetrics() *Metrics {
@@ -144,13 +146,53 @@ func (m *Metrics) collectReqeustDataMetrics(ch chan<- prometheus.Metric, queue *
 		sum   float64
 	)
 	buckets := make(map[float64]uint64)
-	bucketBounds := prometheus.DefBuckets
+	bucketBounds := []float64{
+		10,
+		20,
+		30,
+		40,
+		50,
+		60,
+		70,
+		80,
+		90,
+		100,
+		200,
+		300,
+		400,
+		500,
+		600,
+		700,
+		800,
+		900,
+		1000,
+		1500,
+		2000,
+		2500,
+		3000,
+		3500,
+		4000,
+		4500,
+		5000,
+		10000,
+		20000,
+		30000,
+		40000,
+		50000,
+		100000,
+		200000,
+		300000,
+		400000,
+		500000,
+		1000000,
+	}
 
 	data := queue.ConsumeAll()
 	for _, r := range data {
-		latency := r.Latency.Seconds()
+		latency := float64(r.Latency.Microseconds())
 		sum += latency
 		count++
+		log.Println(latency)
 
 		for _, bound := range bucketBounds {
 			if latency <= bound {
@@ -159,10 +201,11 @@ func (m *Metrics) collectReqeustDataMetrics(ch chan<- prometheus.Metric, queue *
 		}
 	}
 
+	m.counter += uint(len(data))
 	ch <- prometheus.MustNewConstMetric(
 		m.metricRequestsTotal,
 		prometheus.CounterValue,
-		float64(len(data)),
+		float64(m.counter),
 	)
 
 	ch <- prometheus.MustNewConstHistogramWithCreatedTimestamp(