Update On Fri Jun 7 01:07:23 CEST 2024

echo/pkg/metric_reader/reader.go

@@ -1,4 +1,4 @@
-package node_metric
+package metric_reader
 
 import (
 	"context"
@@ -10,6 +10,7 @@ import (
 
 	dto "github.com/prometheus/client_model/go"
 	"github.com/prometheus/common/expfmt"
+	"go.uber.org/zap"
 )
 
 type Reader interface {
@@ -30,6 +31,27 @@ func NewReader(metricsURL string) *readerImpl {
 	}
 }
 
+func (b *readerImpl) parsePingInfo(metricMap map[string]*dto.MetricFamily, nm *NodeMetrics) error {
+	metric, ok := metricMap["ehco_ping_response_duration_seconds"]
+	if !ok {
+		// this metric is optional when enable_ping = false
+		zap.S().Warn("ping metric not found")
+		return nil
+	}
+	for _, m := range metric.Metric {
+		g := m.GetHistogram()
+		ip := ""
+		val := float64(g.GetSampleSum()) / float64(g.GetSampleCount()) * 1000 // to ms
+		for _, label := range m.GetLabel() {
+			if label.GetName() == "ip" {
+				ip = label.GetValue()
+			}
+		}
+		nm.PingMetrics = append(nm.PingMetrics, PingMetric{Latency: val, Target: ip})
+	}
+	return nil
+}
+
 func (b *readerImpl) parseCpuInfo(metricMap map[string]*dto.MetricFamily, nm *NodeMetrics) error {
 	handleMetric := func(metricName string, handleValue func(float64, string)) error {
 		metric, ok := metricMap[metricName]
@@ -250,8 +272,7 @@ func (b *readerImpl) ReadOnce(ctx context.Context) (*NodeMetrics, error) {
 	if err != nil {
 		return nil, err
 	}
-
-	nm := &NodeMetrics{syncTime: time.Now()}
+	nm := &NodeMetrics{syncTime: time.Now(), PingMetrics: []PingMetric{}}
 	if err := b.parseCpuInfo(parsed, nm); err != nil {
 		return nil, err
 	}
@@ -264,6 +285,10 @@ func (b *readerImpl) ReadOnce(ctx context.Context) (*NodeMetrics, error) {
 	if err := b.parseNetworkInfo(parsed, nm); err != nil {
 		return nil, err
 	}
+	if err := b.parsePingInfo(parsed, nm); err != nil {
+		return nil, err
+	}
+
 	b.lastMetrics = nm
 	return nm, nil
 }

echo/pkg/metric_reader/types.go

@@ -1,6 +1,8 @@
-package node_metric
+package metric_reader
 
-import "time"
+import (
+	"time"
+)
 
 type NodeMetrics struct {
 	// cpu
@@ -24,5 +26,13 @@ type NodeMetrics struct {
 	NetworkReceiveBytesRate   float64 `json:"network_receive_bytes_rate"`
 	NetworkTransmitBytesRate  float64 `json:"network_transmit_bytes_rate"`
 
+	// ping
+	PingMetrics []PingMetric `json:"ping_metrics"`
+
 	syncTime time.Time
 }
+
+type PingMetric struct {
+	Latency float64 `json:"latency"` // in ms
+	Target  string  `json:"target"`
+}

echo/pkg/metric_reader/utils.go

@@ -1,4 +1,4 @@
-package node_metric
+package metric_reader
 
 import "regexp"