feat: diverse performance improvements (#1861)

Signed-off-by: Oliver Bähler <oliverbaehler@hotmail.com>

e2e/namespace_additional_webhook_test.go

@@ -0,0 +1,97 @@
+// Copyright 2020-2023 Project Capsule Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package e2e
+
+import (
+	"context"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+
+	capsulev1beta2 "github.com/projectcapsule/capsule/api/v1beta2"
+	"github.com/projectcapsule/capsule/pkg/api"
+)
+
+var _ = Describe("creating a Namespace for a Tenant with additional metadata", Label("namespace"), func() {
+	tnt := &capsulev1beta2.Tenant{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "tenant-metadata-webhook",
+			OwnerReferences: []metav1.OwnerReference{
+				{
+					APIVersion: "cap",
+					Kind:       "dummy",
+					Name:       "tenant-metadata",
+					UID:        "tenant-metadata",
+				},
+			},
+		},
+		Spec: capsulev1beta2.TenantSpec{
+			Owners: api.OwnerListSpec{
+				{
+					CoreOwnerSpec: api.CoreOwnerSpec{
+						UserSpec: api.UserSpec{
+							Name: "gatsby",
+							Kind: "User",
+						},
+					},
+				},
+			},
+			NodeSelector: map[string]string{
+				"node": "foobar",
+			},
+			NamespaceOptions: &capsulev1beta2.NamespaceOptions{
+				AdditionalMetadata: &api.AdditionalMetadataSpec{
+					Labels: map[string]string{
+						"k8s.io/custom-label":     "foo",
+						"clastix.io/custom-label": "bar",
+					},
+					Annotations: map[string]string{
+						"k8s.io/custom-annotation":     "bizz",
+						"clastix.io/custom-annotation": "buzz",
+					},
+				},
+			},
+		},
+	}
+
+	JustBeforeEach(func() {
+		EventuallyCreation(func() error {
+			return k8sClient.Create(context.TODO(), tnt)
+		}).Should(Succeed())
+	})
+	JustAfterEach(func() {
+		Expect(k8sClient.Delete(context.TODO(), tnt)).Should(Succeed())
+	})
+
+	It("should contain additional Namespace metadata", func() {
+		ns := NewNamespace("")
+		NamespaceCreation(ns, tnt.Spec.Owners[0].UserSpec, defaultTimeoutInterval).Should(Succeed())
+		TenantNamespaceList(tnt, defaultTimeoutInterval).Should(ContainElement(ns.GetName()))
+
+		By("checking additional labels", func() {
+			Expect(k8sClient.Get(context.TODO(), types.NamespacedName{Name: ns.GetName()}, ns)).Should(Succeed())
+
+			for k, v := range tnt.Spec.NamespaceOptions.AdditionalMetadata.Labels {
+				Expect(ns.Labels).To(HaveKeyWithValue(k, v))
+			}
+
+			return
+		})
+		By("checking additional annotations", func() {
+			Expect(k8sClient.Get(context.TODO(), types.NamespacedName{Name: ns.GetName()}, ns)).Should(Succeed())
+
+			for k, v := range tnt.Spec.NamespaceOptions.AdditionalMetadata.Annotations {
+				Expect(ns.Annotations).To(HaveKeyWithValue(k, v))
+			}
+			return
+		})
+		By("checking namespace node-selector annotation", func() {
+			Expect(k8sClient.Get(context.TODO(), types.NamespacedName{Name: ns.GetName()}, ns)).Should(Succeed())
+			Expect(ns.Annotations).Should(HaveKeyWithValue("scheduler.alpha.kubernetes.io/node-selector", "node=foobar"))
+			return
+		})
+	})
+})