perf: remove go-nanoid and rxgo

internal/crd/finalizer.go

@@ -5,7 +5,6 @@ import (
 	"flink-kube-operator/internal/crd/v1alpha1"
 	"flink-kube-operator/pkg"
 
-	"github.com/reactivex/rxgo/v2"
 	"go.uber.org/zap"
 	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
@@ -13,11 +12,10 @@ import (
 
 var FinalizerChannel chan (types.UID) = make(chan (types.UID))
 
-func (crd Crd) manageFinalizer(jobEventObservable rxgo.Observable) {
+func (crd Crd) manageFinalizer(jobEventChannel chan FlinkJobCrdEvent) {
 
 	finalizerName := "flink-operator.logicamp.tech/finalizer"
-	for j := range jobEventObservable.Observe() {
-		jobEvent := j.V.(*FlinkJobCrdEvent)
+	for jobEvent := range jobEventChannel {
 		pkg.Logger.Debug("[crd] [manage-finalizer] main loop", zap.String("name", jobEvent.Job.Name))
 		go func() {
 			if jobEvent.Job.GetDeletionTimestamp() != nil {