Collect k8s endpoints, ingress, and services in kube_inventory plugin (#6105)

plugins/inputs/kube_inventory/service.go

@@ -0,0 +1,70 @@
+package kube_inventory
+
+import (
+	"context"
+	"time"
+
+	"github.com/ericchiang/k8s/apis/core/v1"
+
+	"github.com/influxdata/telegraf"
+)
+
+func collectServices(ctx context.Context, acc telegraf.Accumulator, ki *KubernetesInventory) {
+	list, err := ki.client.getServices(ctx)
+	if err != nil {
+		acc.AddError(err)
+		return
+	}
+	for _, i := range list.Items {
+		if err = ki.gatherService(*i, acc); err != nil {
+			acc.AddError(err)
+			return
+		}
+	}
+}
+
+func (ki *KubernetesInventory) gatherService(s v1.Service, acc telegraf.Accumulator) error {
+	if s.Metadata.CreationTimestamp.GetSeconds() == 0 && s.Metadata.CreationTimestamp.GetNanos() == 0 {
+		return nil
+	}
+
+	fields := map[string]interface{}{
+		"created":    time.Unix(s.Metadata.CreationTimestamp.GetSeconds(), int64(s.Metadata.CreationTimestamp.GetNanos())).UnixNano(),
+		"generation": s.Metadata.GetGeneration(),
+	}
+
+	tags := map[string]string{
+		"service_name": s.Metadata.GetName(),
+		"namespace":    s.Metadata.GetNamespace(),
+	}
+
+	var getPorts = func() {
+		for _, port := range s.GetSpec().GetPorts() {
+			fields["port"] = port.GetPort()
+			fields["target_port"] = port.GetTargetPort().GetIntVal()
+
+			tags["port_name"] = port.GetName()
+			tags["port_protocol"] = port.GetProtocol()
+
+			if s.GetSpec().GetType() == "ExternalName" {
+				tags["external_name"] = s.GetSpec().GetExternalName()
+			} else {
+				tags["cluster_ip"] = s.GetSpec().GetClusterIP()
+			}
+
+			acc.AddFields(serviceMeasurement, fields, tags)
+		}
+	}
+
+	if externIPs := s.GetSpec().GetExternalIPs(); externIPs != nil {
+		for _, ip := range externIPs {
+			tags["ip"] = ip
+
+			getPorts()
+		}
+	} else {
+		getPorts()
+	}
+
+	return nil
+}