From 2f6b95cef20d86ffb7ab9639ac72df4bbe4f615a Mon Sep 17 00:00:00 2001
From: Damian Badura <damian.badura@sap.com>
Date: Fri, 2 Feb 2024 13:49:07 +0100
Subject: [PATCH] enable cache only for 1 object

---
 cmd/admission/main.go          | 15 ++++++++++-----
 internal/webhook/controller.go |  2 +-
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/cmd/admission/main.go b/cmd/admission/main.go
index b67016ef..13c0f55e 100644
--- a/cmd/admission/main.go
+++ b/cmd/admission/main.go
@@ -8,7 +8,9 @@ import (
 	"github.com/kyma-project/warden/internal/logging"
 	"github.com/kyma-project/warden/internal/webhook"
 	"go.uber.org/zap/zapcore"
+	"k8s.io/apimachinery/pkg/fields"
 	"os"
+	"sigs.k8s.io/controller-runtime/pkg/cache"
 	"sigs.k8s.io/controller-runtime/pkg/healthz"
 
 	"github.com/go-logr/zapr"
@@ -21,7 +23,6 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	ctrl "sigs.k8s.io/controller-runtime"
-	ctrlclient "sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/manager"
 	ctrlwebhook "sigs.k8s.io/controller-runtime/pkg/webhook"
 )
@@ -110,10 +111,14 @@ func main() {
 		MetricsBindAddress:     ":9090",
 		Logger:                 logrZap,
 		HealthProbeBindAddress: ":8090",
-		ClientDisableCacheFor: []ctrlclient.Object{
-			&corev1.Secret{},
-			&corev1.ConfigMap{},
-		},
+		NewCache: cache.BuilderWithOptions(cache.Options{
+			SelectorsByObject: cache.SelectorsByObject{
+				&corev1.Secret{}: {
+					Field: fields.SelectorFromSet(fields.Set{"metadata.name": appConfig.Admission.SecretName,
+						"metadata.namespace": appConfig.Admission.SystemNamespace}),
+				},
+			},
+		}),
 	})
 	if err != nil {
 		logger.Error("failed to start manager", err.Error())
diff --git a/internal/webhook/controller.go b/internal/webhook/controller.go
index c48ff30d..6beaef4d 100644
--- a/internal/webhook/controller.go
+++ b/internal/webhook/controller.go
@@ -2,6 +2,7 @@ package webhook
 
 import (
 	"context"
+	corev1 "k8s.io/api/core/v1"
 	"os"
 	"path"
 	"time"
@@ -11,7 +12,6 @@ import (
 	"github.com/kyma-project/warden/internal/webhook/certs"
 	"github.com/pkg/errors"
 	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
-	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/types"
 	ctrl "sigs.k8s.io/controller-runtime"
 	ctrlclient "sigs.k8s.io/controller-runtime/pkg/client"