only export float64 metrics of heap_info

main.go

@@ -37,6 +37,7 @@ func main() {
 	r := prometheus.NewRegistry()
 	r.MustRegister(metrics.InterfaceStat)
 	r.MustRegister(metrics.CallCount)
+	r.MustRegister(metrics.HeapInfo)
 
 	http.Handle("/metrics", promhttp.HandlerFor(r, promhttp.HandlerOpts{}))
 

metrics/metrics.go

@@ -47,7 +47,13 @@ func queryTelemetry(conn net.Conn, log *logrus.Logger, command string, response
 
 func Update(conn net.Conn, hostname string, log *logrus.Logger) {
 	var dpserviceHeapInfo DpServiceHeapInfo
-	queryTelemetry(conn, log, "/eal/heap_info", &dpserviceHeapInfo)
+	queryTelemetry(conn, log, "/eal/heap_info,0", &dpserviceHeapInfo)
+	for key, value := range dpserviceHeapInfo.Value {
+		// Only export metrics of type float64 (/eal/heap_info contains also some string values)
+		if v, ok := value.(float64); ok {
+			HeapInfo.With(prometheus.Labels{"node_name": hostname, "info": key}).Set(v)
+		}
+	}
 
 	var ethdevList EthdevList
 	queryTelemetry(conn, log, "/ethdev/list", &ethdevList)

metrics/types.go

@@ -64,5 +64,5 @@ type DpServiceGraphCallCount struct {
 }
 
 type DpServiceHeapInfo struct {
-	Value map[string]int `json:"/eal/heap_info"`
+	Value map[string]any `json:"/eal/heap_info"`
 }