allow k8s events in initial validation (#6814)

Author: pdabelf5

cmd/nginx-ingress/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"context"
 	"errors"
 	"fmt"
@@ -38,9 +39,11 @@ import (
 	"k8s.io/client-go/dynamic"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/kubernetes/scheme"
+	core_v1 "k8s.io/client-go/kubernetes/typed/core/v1"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
 	clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
+	"k8s.io/client-go/tools/record"
 
 	kitlog "github.com/go-kit/log"
 
@@ -90,6 +93,15 @@ func main() {
 
 	config, kubeClient := mustCreateConfigAndKubeClient(ctx)
 	mustValidateKubernetesVersionInfo(ctx, kubeClient)
+	eventBroadcaster := record.NewBroadcaster()
+	eventBroadcaster.StartLogging(func(format string, args ...interface{}) {
+		nl.Infof(l, format, args...)
+	})
+	eventBroadcaster.StartRecordingToSink(&core_v1.EventSinkImpl{
+		Interface: core_v1.New(kubeClient.CoreV1().RESTClient()).Events(""),
+	})
+	eventRecorder := eventBroadcaster.NewRecorder(scheme.Scheme,
+		api_v1.EventSource{Component: "nginx-ingress-controller"})
 	mustValidateIngressClass(ctx, kubeClient)
 
 	checkNamespaces(ctx, kubeClient)
@@ -128,7 +140,7 @@ func main() {
 		agentVersion = getAgentVersionInfo(nginxManager)
 	}
 
-	go updateSelfWithVersionInfo(ctx, kubeClient, version, appProtectVersion, agentVersion, nginxVersion, 10, time.Second*5)
+	go updateSelfWithVersionInfo(ctx, eventRecorder, kubeClient, version, appProtectVersion, agentVersion, nginxVersion, 10, time.Second*5)
 
 	templateExecutor, templateExecutorV2 := createTemplateExecutors(ctx)
 
@@ -230,6 +242,7 @@ func main() {
 		ConfClient:                   confClient,
 		DynClient:                    dynClient,
 		RestConfig:                   config,
+		Recorder:                     eventRecorder,
 		ResyncPeriod:                 30 * time.Second,
 		LoggerContext:                ctx,
 		Namespace:                    watchNamespaces,
@@ -983,7 +996,7 @@ func processMGMTConfigMap(kubeClient *kubernetes.Clientset, mgmtCfgParams *confi
 	return mgmtCfgParams
 }
 
-func updateSelfWithVersionInfo(ctx context.Context, kubeClient *kubernetes.Clientset, version, appProtectVersion, agentVersion string, nginxVersion nginx.Version, maxRetries int, waitTime time.Duration) {
+func updateSelfWithVersionInfo(ctx context.Context, eventLog record.EventRecorder, kubeClient *kubernetes.Clientset, version, appProtectVersion, agentVersion string, nginxVersion nginx.Version, maxRetries int, waitTime time.Duration) {
 	l := nl.LoggerFromContext(ctx)
 	podUpdated := false
 
@@ -1020,6 +1033,11 @@ func updateSelfWithVersionInfo(ctx context.Context, kubeClient *kubernetes.Clien
 			continue
 		}
 
+		labelsString := new(bytes.Buffer)
+		for key, value := range labels {
+			fmt.Fprintf(labelsString, "%s=\"%s\", ", key, value)
+		}
+		eventLog.Eventf(newPod, api_v1.EventTypeNormal, "UpdatePodLabel", "Successfully added version labels, %s", strings.TrimRight(labelsString.String(), ", "))
 		nl.Infof(l, "Pod label updated: %s", pod.ObjectMeta.Name)
 		podUpdated = true
 	}

internal/k8s/controller.go

@@ -44,8 +44,6 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/kubernetes/scheme"
-	core_v1 "k8s.io/client-go/kubernetes/typed/core/v1"
 	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/tools/leaderelection"
 	"k8s.io/client-go/tools/record"
@@ -189,6 +187,7 @@ type NewLoadBalancerControllerInput struct {
 	ConfClient                   k8s_nginx.Interface
 	DynClient                    dynamic.Interface
 	RestConfig                   *rest.Config
+	Recorder                     record.EventRecorder
 	ResyncPeriod                 time.Duration
 	LoggerContext                context.Context
 	Namespace                    []string
@@ -246,6 +245,7 @@ func NewLoadBalancerController(input NewLoadBalancerControllerInput) *LoadBalanc
 		confClient:                   input.ConfClient,
 		dynClient:                    input.DynClient,
 		restConfig:                   input.RestConfig,
+		recorder:                     input.Recorder,
 		Logger:                       nl.LoggerFromContext(input.LoggerContext),
 		configurator:                 input.NginxConfigurator,
 		specialSecrets:               specialSecrets,
@@ -273,15 +273,6 @@ func NewLoadBalancerController(input NewLoadBalancerControllerInput) *LoadBalanc
 		nginxConfigMapName:           input.ConfigMaps,
 		mgmtConfigMapName:            input.MGMTConfigMap,
 	}
-	eventBroadcaster := record.NewBroadcaster()
-	eventBroadcaster.StartLogging(func(format string, args ...interface{}) {
-		nl.Infof(lbc.Logger, format, args...)
-	})
-	eventBroadcaster.StartRecordingToSink(&core_v1.EventSinkImpl{
-		Interface: core_v1.New(input.KubeClient.CoreV1().RESTClient()).Events(""),
-	})
-	lbc.recorder = eventBroadcaster.NewRecorder(scheme.Scheme,
-		api_v1.EventSource{Component: "nginx-ingress-controller"})
 
 	lbc.syncQueue = newTaskQueue(lbc.Logger, lbc.sync)
 	var err error