feature: added AdmissionController metrics (#7711)

* feature: added AdmissionController metrics

* fix: flag control on admissionCollector

* fix: admission collector disclaimer year and linting

internal/ingress/metric/main.go

@@ -36,6 +36,8 @@ type Collector interface {
 	IncReloadCount()
 	IncReloadErrorCount()
 
+	SetAdmissionMetrics(float64, float64, float64, float64, float64, float64)
+
 	OnStartedLeading(string)
 	OnStoppedLeading(string)
 
@@ -49,15 +51,16 @@ type Collector interface {
 	// SetHosts sets the hostnames that are being served by the ingress controller
 	SetHosts(sets.String)
 
-	Start()
-	Stop()
+	Start(string)
+	Stop(string)
 }
 
 type collector struct {
 	nginxStatus  collectors.NGINXStatusCollector
 	nginxProcess collectors.NGINXProcessCollector
 
-	ingressController *collectors.Controller
+	ingressController   *collectors.Controller
+	admissionController *collectors.AdmissionCollector
 
 	socket *collectors.SocketCollector
 
@@ -90,11 +93,14 @@ func NewCollector(metricsPerHost bool, registry *prometheus.Registry, ingresscla
 
 	ic := collectors.NewController(podName, podNamespace, ingressclass)
 
+	am := collectors.NewAdmissionCollector(podName, podNamespace, ingressclass)
+
 	return Collector(&collector{
 		nginxStatus:  nc,
 		nginxProcess: pc,
 
-		ingressController: ic,
+		admissionController: am,
+		ingressController:   ic,
 
 		socket: s,
 
@@ -127,9 +133,12 @@ func (c *collector) RemoveMetrics(ingresses, hosts []string) {
 	c.ingressController.RemoveMetrics(hosts, c.registry)
 }
 
-func (c *collector) Start() {
+func (c *collector) Start(admissionStatus string) {
 	c.registry.MustRegister(c.nginxStatus)
 	c.registry.MustRegister(c.nginxProcess)
+	if admissionStatus != "" {
+		c.registry.MustRegister(c.admissionController)
+	}
 	c.registry.MustRegister(c.ingressController)
 	c.registry.MustRegister(c.socket)
 
@@ -143,9 +152,12 @@ func (c *collector) Start() {
 	go c.socket.Start()
 }
 
-func (c *collector) Stop() {
+func (c *collector) Stop(admissionStatus string) {
 	c.registry.Unregister(c.nginxStatus)
 	c.registry.Unregister(c.nginxProcess)
+	if admissionStatus != "" {
+		c.registry.Unregister(c.admissionController)
+	}
 	c.registry.Unregister(c.ingressController)
 	c.registry.Unregister(c.socket)
 
@@ -167,6 +179,17 @@ func (c *collector) SetHosts(hosts sets.String) {
 	c.socket.SetHosts(hosts)
 }
 
+func (c *collector) SetAdmissionMetrics(testedIngressLength float64, testedIngressTime float64, renderingIngressLength float64, renderingIngressTime float64, testedConfigurationSize float64, admissionTime float64) {
+	c.admissionController.SetAdmissionMetrics(
+		testedIngressLength,
+		testedIngressTime,
+		renderingIngressLength,
+		renderingIngressTime,
+		testedConfigurationSize,
+		admissionTime,
+	)
+}
+
 // OnStartedLeading indicates the pod was elected as the leader
 func (c *collector) OnStartedLeading(electionID string) {
 	setLeader(true)