[Feature] Webhooks (#1781)

.golangci.yaml

@@ -129,6 +129,8 @@ linters-settings:
         pkg: k8s.io/api/batch/v1
       - alias: core
         pkg: k8s.io/api/core/v1
+      - alias: admission
+        pkg: k8s.io/api/admission/v1
       - alias: policy
         pkg: k8s.io/api/policy/v1
       - alias: storage

CHANGELOG.md

@@ -33,6 +33,7 @@
 - (Feature) (Scheduler) Shutdown Integration
 - (Feature) CertManager Integration
 - (Feature) (Networking) Gateway Options sync
+- (Feature) Webhooks
 
 ## [1.2.43](https://github.com/arangodb/kube-arangodb/tree/1.2.43) (2024-10-14)
 - (Feature) ArangoRoute CRD

README.md

@@ -195,7 +195,7 @@ Flags:
       --kubernetes.max-batch-size int                          Size of batch during objects read (default 256)
       --kubernetes.qps float32                                 Number of queries per second for k8s API (default 15)
       --log.format string                                      Set log format. Allowed values: 'pretty', 'JSON'. If empty, default format is used (default "pretty")
-      --log.level stringArray                                  Set log levels in format <level> or <logger>=<level>. Possible loggers: action, agency, api-server, assertion, backup-operator, chaos-monkey, crd, deployment, deployment-ci, deployment-reconcile, deployment-replication, deployment-resilience, deployment-resources, deployment-storage, deployment-storage-pc, deployment-storage-service, generic-parent-operator, helm, http, inspector, integration-config-v1, integration-envoy-auth-v3, integration-scheduler-v2, integration-storage-v2, integrations, k8s-client, kubernetes-informer, monitor, networking-route-operator, operator, operator-arangojob-handler, operator-v2, operator-v2-event, operator-v2-worker, panics, platform-chart-operator, platform-pod-shutdown, platform-storage-operator, pod_compare, root, root-event-recorder, scheduler-batchjob-operator, scheduler-cronjob-operator, scheduler-deployment-operator, scheduler-pod-operator, scheduler-profile-operator, server, server-authentication (default [info])
+      --log.level stringArray                                  Set log levels in format <level> or <logger>=<level>. Possible loggers: action, agency, api-server, assertion, backup-operator, chaos-monkey, crd, deployment, deployment-ci, deployment-reconcile, deployment-replication, deployment-resilience, deployment-resources, deployment-storage, deployment-storage-pc, deployment-storage-service, generic-parent-operator, helm, http, inspector, integration-config-v1, integration-envoy-auth-v3, integration-scheduler-v2, integration-storage-v2, integrations, k8s-client, kubernetes-informer, monitor, networking-route-operator, operator, operator-arangojob-handler, operator-v2, operator-v2-event, operator-v2-worker, panics, platform-chart-operator, platform-pod-shutdown, platform-storage-operator, pod_compare, root, root-event-recorder, scheduler-batchjob-operator, scheduler-cronjob-operator, scheduler-deployment-operator, scheduler-pod-operator, scheduler-profile-operator, server, server-authentication, webhook (default [info])
       --log.sampling                                           If true, operator will try to minimize duplication of logging events (default true)
       --memory-limit uint                                      Define memory limit for hard shutdown and the dump of goroutines. Used for testing
       --metrics.excluded-prefixes stringArray                  List of the excluded metrics prefixes

chart/kube-arangodb-arm64/templates/deployment.yaml

@@ -191,6 +191,67 @@ spec:
                           scheme: HTTPS
                       initialDelaySeconds: 5
                       periodSeconds: 10
+{{- end }}
+{{ if .Values.webhooks.enabled }}
+                - name: webhooks
+                  imagePullPolicy: {{ .Values.operator.imagePullPolicy }}
+                  image: {{ .Values.operator.image }}
+                  args:
+                    - webhook
+{{- if .Values.certificate.enabled }}
+                    - --ssl.secret.name={{ template "kube-arangodb.operatorName" . }}-webhook-cert
+                    - --ssl.secret.namespace={{ .Release.Namespace }}
+{{- end -}}
+{{- if .Values.webhooks.args }}
+{{- range .Values.webhooks.args }}
+                    - {{ . | quote }}
+{{- end }}
+{{- end }}
+                  env:
+                      - name: MY_POD_NAMESPACE
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.namespace
+                      - name: MY_POD_NAME
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.name
+                      - name: MY_CONTAINER_NAME
+                        value: "webhooks"
+                      - name: MY_POD_IP
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: status.podIP
+                  ports:
+                      - name: webhooks
+                        containerPort: 8828
+                  securityContext:
+                      privileged: false
+                      allowPrivilegeEscalation: false
+                      readOnlyRootFilesystem: true
+                      capabilities:
+                          drop:
+                              - 'ALL'
+{{- if .Values.webhooks.resources }}
+                  resources:
+{{ toYaml .Values.webhooks.resources | indent 22 }}
+{{- end }}
+{{- if not .Values.webhooks.debug }}
+                  livenessProbe:
+                      httpGet:
+                          path: /health
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+                  readinessProbe:
+                      httpGet:
+                          path: /ready
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+{{- end }}
 {{- end }}
             tolerations:
                 - key: "node.kubernetes.io/unreachable"

chart/kube-arangodb-arm64/templates/service-webhooks.yaml

@@ -0,0 +1,31 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+{{- if .Values.operator.annotations }}
+  annotations:
+{{ toYaml .Values.operator.annotations | indent 8 }}
+{{- end }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  ports:
+    - name: webhooks
+      port: 443
+      protocol: TCP
+      targetPort: webhooks
+  selector:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+  type: ClusterIP
+
+{{- end }}

chart/kube-arangodb-arm64/templates/webhook/certificate.yaml

@@ -0,0 +1,24 @@
+{{ if .Values.certificate.enabled -}}
+
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  secretName: {{ template "kube-arangodb.operatorName" . }}-webhook-cert
+  duration: {{ .Values.certificate.cert.duration }}
+  issuerRef:
+    name: {{ template "kube-arangodb.operatorName" . }}
+  dnsNames:
+    - {{ template "kube-arangodb.operatorName" . }}-webhook
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}.svc
+
+{{- end }}

chart/kube-arangodb-arm64/templates/webhook/mutation.yaml

@@ -0,0 +1,42 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks:
+  - name: "pods.policies.scheduler.arangodb.com"
+    namespaceSelector:
+      matchExpressions:
+        - key: kubernetes.io/metadata.name
+          operator: In
+          values:
+            - {{ .Release.Namespace }}
+    objectSelector:
+      matchExpressions:
+        - key: profiles.arangodb.com/deployment
+          operator: Exists
+    rules:
+      - apiGroups:   [""]
+        apiVersions: ["v1"]
+        operations:  ["CREATE"]
+        resources:   ["pods"]
+        scope:       "Namespaced"
+    clientConfig:
+      service:
+        namespace: {{ .Release.Namespace }}
+        name: {{ template "kube-arangodb.operatorName" . }}-webhook
+        path: /webhook/core/v1/pods/policies/mutate
+    admissionReviewVersions: ["v1"]
+    sideEffects: None
+    timeoutSeconds: 5
+
+{{- end }}

chart/kube-arangodb-arm64/templates/webhook/validation.yaml

@@ -0,0 +1,17 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks: []
+
+{{- end }}

chart/kube-arangodb-arm64/values.yaml

@@ -44,6 +44,16 @@ rbac:
     acs: true
     at: true
     debug: false
+webhooks:
+  enabled: false
+  args: []
+  resources:
+    limits:
+      cpu: 1
+      memory: 128Mi
+    requests:
+      cpu: 250m
+      memory: 128Mi
 certificate:
   enabled: false
   ca:

chart/kube-arangodb-enterprise-arm64/templates/deployment.yaml

@@ -191,6 +191,67 @@ spec:
                           scheme: HTTPS
                       initialDelaySeconds: 5
                       periodSeconds: 10
+{{- end }}
+{{ if .Values.webhooks.enabled }}
+                - name: webhooks
+                  imagePullPolicy: {{ .Values.operator.imagePullPolicy }}
+                  image: {{ .Values.operator.image }}
+                  args:
+                    - webhook
+{{- if .Values.certificate.enabled }}
+                    - --ssl.secret.name={{ template "kube-arangodb.operatorName" . }}-webhook-cert
+                    - --ssl.secret.namespace={{ .Release.Namespace }}
+{{- end -}}
+{{- if .Values.webhooks.args }}
+{{- range .Values.webhooks.args }}
+                    - {{ . | quote }}
+{{- end }}
+{{- end }}
+                  env:
+                      - name: MY_POD_NAMESPACE
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.namespace
+                      - name: MY_POD_NAME
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.name
+                      - name: MY_CONTAINER_NAME
+                        value: "webhooks"
+                      - name: MY_POD_IP
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: status.podIP
+                  ports:
+                      - name: webhooks
+                        containerPort: 8828
+                  securityContext:
+                      privileged: false
+                      allowPrivilegeEscalation: false
+                      readOnlyRootFilesystem: true
+                      capabilities:
+                          drop:
+                              - 'ALL'
+{{- if .Values.webhooks.resources }}
+                  resources:
+{{ toYaml .Values.webhooks.resources | indent 22 }}
+{{- end }}
+{{- if not .Values.webhooks.debug }}
+                  livenessProbe:
+                      httpGet:
+                          path: /health
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+                  readinessProbe:
+                      httpGet:
+                          path: /ready
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+{{- end }}
 {{- end }}
             tolerations:
                 - key: "node.kubernetes.io/unreachable"

chart/kube-arangodb-enterprise-arm64/templates/service-webhooks.yaml

@@ -0,0 +1,31 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+{{- if .Values.operator.annotations }}
+  annotations:
+{{ toYaml .Values.operator.annotations | indent 8 }}
+{{- end }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  ports:
+    - name: webhooks
+      port: 443
+      protocol: TCP
+      targetPort: webhooks
+  selector:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+  type: ClusterIP
+
+{{- end }}

chart/kube-arangodb-enterprise-arm64/templates/webhook/certificate.yaml

@@ -0,0 +1,24 @@
+{{ if .Values.certificate.enabled -}}
+
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  secretName: {{ template "kube-arangodb.operatorName" . }}-webhook-cert
+  duration: {{ .Values.certificate.cert.duration }}
+  issuerRef:
+    name: {{ template "kube-arangodb.operatorName" . }}
+  dnsNames:
+    - {{ template "kube-arangodb.operatorName" . }}-webhook
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}.svc
+
+{{- end }}

chart/kube-arangodb-enterprise-arm64/templates/webhook/mutation.yaml

@@ -0,0 +1,42 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks:
+  - name: "pods.policies.scheduler.arangodb.com"
+    namespaceSelector:
+      matchExpressions:
+        - key: kubernetes.io/metadata.name
+          operator: In
+          values:
+            - {{ .Release.Namespace }}
+    objectSelector:
+      matchExpressions:
+        - key: profiles.arangodb.com/deployment
+          operator: Exists
+    rules:
+      - apiGroups:   [""]
+        apiVersions: ["v1"]
+        operations:  ["CREATE"]
+        resources:   ["pods"]
+        scope:       "Namespaced"
+    clientConfig:
+      service:
+        namespace: {{ .Release.Namespace }}
+        name: {{ template "kube-arangodb.operatorName" . }}-webhook
+        path: /webhook/core/v1/pods/policies/mutate
+    admissionReviewVersions: ["v1"]
+    sideEffects: None
+    timeoutSeconds: 5
+
+{{- end }}

chart/kube-arangodb-enterprise-arm64/templates/webhook/validation.yaml

@@ -0,0 +1,17 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks: []
+
+{{- end }}

chart/kube-arangodb-enterprise-arm64/values.yaml

@@ -44,6 +44,16 @@ rbac:
     acs: true
     at: true
     debug: false
+webhooks:
+  enabled: false
+  args: []
+  resources:
+    limits:
+      cpu: 1
+      memory: 128Mi
+    requests:
+      cpu: 250m
+      memory: 128Mi
 certificate:
   enabled: false
   ca:

chart/kube-arangodb-enterprise/templates/deployment.yaml

@@ -191,6 +191,67 @@ spec:
                           scheme: HTTPS
                       initialDelaySeconds: 5
                       periodSeconds: 10
+{{- end }}
+{{ if .Values.webhooks.enabled }}
+                - name: webhooks
+                  imagePullPolicy: {{ .Values.operator.imagePullPolicy }}
+                  image: {{ .Values.operator.image }}
+                  args:
+                    - webhook
+{{- if .Values.certificate.enabled }}
+                    - --ssl.secret.name={{ template "kube-arangodb.operatorName" . }}-webhook-cert
+                    - --ssl.secret.namespace={{ .Release.Namespace }}
+{{- end -}}
+{{- if .Values.webhooks.args }}
+{{- range .Values.webhooks.args }}
+                    - {{ . | quote }}
+{{- end }}
+{{- end }}
+                  env:
+                      - name: MY_POD_NAMESPACE
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.namespace
+                      - name: MY_POD_NAME
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.name
+                      - name: MY_CONTAINER_NAME
+                        value: "webhooks"
+                      - name: MY_POD_IP
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: status.podIP
+                  ports:
+                      - name: webhooks
+                        containerPort: 8828
+                  securityContext:
+                      privileged: false
+                      allowPrivilegeEscalation: false
+                      readOnlyRootFilesystem: true
+                      capabilities:
+                          drop:
+                              - 'ALL'
+{{- if .Values.webhooks.resources }}
+                  resources:
+{{ toYaml .Values.webhooks.resources | indent 22 }}
+{{- end }}
+{{- if not .Values.webhooks.debug }}
+                  livenessProbe:
+                      httpGet:
+                          path: /health
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+                  readinessProbe:
+                      httpGet:
+                          path: /ready
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+{{- end }}
 {{- end }}
             tolerations:
                 - key: "node.kubernetes.io/unreachable"

chart/kube-arangodb-enterprise/templates/service-webhooks.yaml

@@ -0,0 +1,31 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+{{- if .Values.operator.annotations }}
+  annotations:
+{{ toYaml .Values.operator.annotations | indent 8 }}
+{{- end }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  ports:
+    - name: webhooks
+      port: 443
+      protocol: TCP
+      targetPort: webhooks
+  selector:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+  type: ClusterIP
+
+{{- end }}

chart/kube-arangodb-enterprise/templates/webhook/certificate.yaml

@@ -0,0 +1,24 @@
+{{ if .Values.certificate.enabled -}}
+
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  secretName: {{ template "kube-arangodb.operatorName" . }}-webhook-cert
+  duration: {{ .Values.certificate.cert.duration }}
+  issuerRef:
+    name: {{ template "kube-arangodb.operatorName" . }}
+  dnsNames:
+    - {{ template "kube-arangodb.operatorName" . }}-webhook
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}.svc
+
+{{- end }}

chart/kube-arangodb-enterprise/templates/webhook/mutation.yaml

@@ -0,0 +1,42 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks:
+  - name: "pods.policies.scheduler.arangodb.com"
+    namespaceSelector:
+      matchExpressions:
+        - key: kubernetes.io/metadata.name
+          operator: In
+          values:
+            - {{ .Release.Namespace }}
+    objectSelector:
+      matchExpressions:
+        - key: profiles.arangodb.com/deployment
+          operator: Exists
+    rules:
+      - apiGroups:   [""]
+        apiVersions: ["v1"]
+        operations:  ["CREATE"]
+        resources:   ["pods"]
+        scope:       "Namespaced"
+    clientConfig:
+      service:
+        namespace: {{ .Release.Namespace }}
+        name: {{ template "kube-arangodb.operatorName" . }}-webhook
+        path: /webhook/core/v1/pods/policies/mutate
+    admissionReviewVersions: ["v1"]
+    sideEffects: None
+    timeoutSeconds: 5
+
+{{- end }}

chart/kube-arangodb-enterprise/templates/webhook/validation.yaml

@@ -0,0 +1,17 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks: []
+
+{{- end }}

chart/kube-arangodb-enterprise/values.yaml

@@ -44,6 +44,16 @@ rbac:
     acs: true
     at: true
     debug: false
+webhooks:
+  enabled: false
+  args: []
+  resources:
+    limits:
+      cpu: 1
+      memory: 128Mi
+    requests:
+      cpu: 250m
+      memory: 128Mi
 certificate:
   enabled: false
   ca:

chart/kube-arangodb/templates/deployment.yaml

@@ -191,6 +191,67 @@ spec:
                           scheme: HTTPS
                       initialDelaySeconds: 5
                       periodSeconds: 10
+{{- end }}
+{{ if .Values.webhooks.enabled }}
+                - name: webhooks
+                  imagePullPolicy: {{ .Values.operator.imagePullPolicy }}
+                  image: {{ .Values.operator.image }}
+                  args:
+                    - webhook
+{{- if .Values.certificate.enabled }}
+                    - --ssl.secret.name={{ template "kube-arangodb.operatorName" . }}-webhook-cert
+                    - --ssl.secret.namespace={{ .Release.Namespace }}
+{{- end -}}
+{{- if .Values.webhooks.args }}
+{{- range .Values.webhooks.args }}
+                    - {{ . | quote }}
+{{- end }}
+{{- end }}
+                  env:
+                      - name: MY_POD_NAMESPACE
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.namespace
+                      - name: MY_POD_NAME
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: metadata.name
+                      - name: MY_CONTAINER_NAME
+                        value: "webhooks"
+                      - name: MY_POD_IP
+                        valueFrom:
+                            fieldRef:
+                                fieldPath: status.podIP
+                  ports:
+                      - name: webhooks
+                        containerPort: 8828
+                  securityContext:
+                      privileged: false
+                      allowPrivilegeEscalation: false
+                      readOnlyRootFilesystem: true
+                      capabilities:
+                          drop:
+                              - 'ALL'
+{{- if .Values.webhooks.resources }}
+                  resources:
+{{ toYaml .Values.webhooks.resources | indent 22 }}
+{{- end }}
+{{- if not .Values.webhooks.debug }}
+                  livenessProbe:
+                      httpGet:
+                          path: /health
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+                  readinessProbe:
+                      httpGet:
+                          path: /ready
+                          port: 8828
+                          scheme: HTTPS
+                      initialDelaySeconds: 5
+                      periodSeconds: 10
+{{- end }}
 {{- end }}
             tolerations:
                 - key: "node.kubernetes.io/unreachable"

chart/kube-arangodb/templates/service-webhooks.yaml

@@ -0,0 +1,31 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+{{- if .Values.operator.annotations }}
+  annotations:
+{{ toYaml .Values.operator.annotations | indent 8 }}
+{{- end }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  ports:
+    - name: webhooks
+      port: 443
+      protocol: TCP
+      targetPort: webhooks
+  selector:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+  type: ClusterIP
+
+{{- end }}

chart/kube-arangodb/templates/webhook/certificate.yaml

@@ -0,0 +1,24 @@
+{{ if .Values.certificate.enabled -}}
+
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: {{ template "kube-arangodb.operatorName" . }}-webhook
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+spec:
+  secretName: {{ template "kube-arangodb.operatorName" . }}-webhook-cert
+  duration: {{ .Values.certificate.cert.duration }}
+  issuerRef:
+    name: {{ template "kube-arangodb.operatorName" . }}
+  dnsNames:
+    - {{ template "kube-arangodb.operatorName" . }}-webhook
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}
+    - {{ template "kube-arangodb.operatorName" . }}-webhook.{{ .Release.Namespace }}.svc
+
+{{- end }}

chart/kube-arangodb/templates/webhook/mutation.yaml

@@ -0,0 +1,42 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: MutatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks:
+  - name: "pods.policies.scheduler.arangodb.com"
+    namespaceSelector:
+      matchExpressions:
+        - key: kubernetes.io/metadata.name
+          operator: In
+          values:
+            - {{ .Release.Namespace }}
+    objectSelector:
+      matchExpressions:
+        - key: profiles.arangodb.com/deployment
+          operator: Exists
+    rules:
+      - apiGroups:   [""]
+        apiVersions: ["v1"]
+        operations:  ["CREATE"]
+        resources:   ["pods"]
+        scope:       "Namespaced"
+    clientConfig:
+      service:
+        namespace: {{ .Release.Namespace }}
+        name: {{ template "kube-arangodb.operatorName" . }}-webhook
+        path: /webhook/core/v1/pods/policies/mutate
+    admissionReviewVersions: ["v1"]
+    sideEffects: None
+    timeoutSeconds: 5
+
+{{- end }}

chart/kube-arangodb/templates/webhook/validation.yaml

@@ -0,0 +1,17 @@
+{{ if .Values.webhooks.enabled }}
+
+apiVersion: admissionregistration.k8s.io/v1
+kind: ValidatingWebhookConfiguration
+metadata:
+  name: "{{ template "kube-arangodb.operatorName" . }}.{{ .Release.Namespace }}.operator.arangodb.com"
+  annotations:
+    cert-manager.io/inject-ca-from: "{{ .Release.Namespace }}/{{ template "kube-arangodb.operatorName" . }}-ca"
+  labels:
+    app.kubernetes.io/name: {{ template "kube-arangodb.name" . }}
+    helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    release: {{ .Release.Name }}
+webhooks: []
+
+{{- end }}

chart/kube-arangodb/values.yaml

@@ -45,6 +45,16 @@ rbac:
     acs: true
     at: true
     debug: false
+webhooks:
+  enabled: false
+  args: []
+  resources:
+    limits:
+      cpu: 1
+      memory: 128Mi
+    requests:
+      cpu: 250m
+      memory: 128Mi
 certificate:
   enabled: false
   ca:

cmd/cmd.go

@@ -84,9 +84,6 @@ const (
 )
 
 var (
-	logger        = logging.Global().RegisterAndGetLogger("root", logging.Info)
-	eventRecorder = logging.Global().RegisterAndGetLogger("root-event-recorder", logging.Info)
-
 	cmdMain = cobra.Command{
 		Use: "arangodb_operator",
 		Run: executeMain,

cmd/exporter.go

@@ -22,17 +22,16 @@ package cmd
 
 import (
 	"context"
+	"net/http"
 	"os"
-	"os/signal"
-	"syscall"
 	"time"
 
-	"github.com/rs/zerolog/log"
 	"github.com/spf13/cobra"
 
 	"github.com/arangodb/kube-arangodb/pkg/exporter"
 	"github.com/arangodb/kube-arangodb/pkg/util"
 	"github.com/arangodb/kube-arangodb/pkg/util/errors"
+	operatorHTTP "github.com/arangodb/kube-arangodb/pkg/util/http"
 )
 
 var (
@@ -67,23 +66,14 @@ func init() {
 
 func cmdExporterCheck(cmd *cobra.Command, args []string) {
 	if err := cmdExporterCheckE(); err != nil {
-		log.Error().Err(err).Msgf("Fatal")
+		logger.Err(err).Error("Fatal")
 		os.Exit(1)
 	}
 }
 
-func onSigterm(f func()) {
-	sigs := make(chan os.Signal, 1)
-
-	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
-
-	go func() {
-		defer f()
-		<-sigs
-	}()
-}
-
 func cmdExporterCheckE() error {
+	ctx := util.CreateSignalContext(context.Background())
+
 	if len(exporterInput.endpoints) < 1 {
 		return errors.Errorf("Requires at least one ArangoDB Endpoint to be present")
 	}
@@ -117,26 +107,34 @@ func cmdExporterCheckE() error {
 		return string(data), nil
 	}, false, 15*time.Second)
 
-	go mon.UpdateMonitorStatus(util.CreateSignalContext(context.Background()))
+	go mon.UpdateMonitorStatus(ctx)
 
-	exporter := exporter.NewExporter(exporterInput.listenAddress, "/metrics", p)
+	server, err := operatorHTTP.NewServer(ctx,
+		operatorHTTP.DefaultHTTPServerSettings,
+		operatorHTTP.WithServeMux(func(in *http.ServeMux) {
+			in.Handle("/metrics", p)
+		}, func(in *http.ServeMux) {
+			in.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+				w.Write([]byte(`<html>
+             <head><title>ArangoDB Exporter</title></head>
+             <body>
+             <h1>ArangoDB Exporter</h1>
+             <p><a href='/metrics'>Metrics</a></p>
+             </body>
+             </html>`))
+			})
+		}),
+		operatorHTTP.WithTLSConfigFetcherGen(func() util.TLSConfigFetcher {
 			if exporterInput.keyfile != "" {
-		if e, err := exporter.WithKeyfile(exporterInput.keyfile); err != nil {
+				return util.NewKeyfileTLSConfig(exporterInput.keyfile)
+			}
+
+			return nil
+		}),
+	)
+	if err != nil {
 		return err
-		} else {
-			if r, err := e.Start(); err != nil {
-				return err
-			} else {
-				onSigterm(r.Stop)
-				return r.Wait()
-			}
-		}
-	} else {
-		if r, err := exporter.Start(); err != nil {
-			return err
-		} else {
-			onSigterm(r.Stop)
-			return r.Wait()
-		}
 	}
+
+	return server.StartAddr(ctx, exporterInput.listenAddress)
 }

cmd/logger.go

@@ -0,0 +1,28 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package cmd
+
+import "github.com/arangodb/kube-arangodb/pkg/logging"
+
+var (
+	logger        = logging.Global().RegisterAndGetLogger("root", logging.Info)
+	eventRecorder = logging.Global().RegisterAndGetLogger("root-event-recorder", logging.Info)
+)

cmd/webhook.go

@@ -0,0 +1,113 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package cmd
+
+import (
+	"context"
+	goHttp "net/http"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/arangodb/kube-arangodb/pkg/handlers/scheduler"
+	"github.com/arangodb/kube-arangodb/pkg/util"
+	"github.com/arangodb/kube-arangodb/pkg/util/constants"
+	"github.com/arangodb/kube-arangodb/pkg/util/errors"
+	"github.com/arangodb/kube-arangodb/pkg/util/http"
+	"github.com/arangodb/kube-arangodb/pkg/util/kclient"
+	"github.com/arangodb/kube-arangodb/pkg/webhook"
+)
+
+var (
+	cmdWebhook = &cobra.Command{
+		Use: "webhook",
+		Run: cmdWebhookCheck,
+	}
+
+	webhookInput struct {
+		listenAddress string
+
+		secretName, secretNamespace string
+	}
+)
+
+func init() {
+	f := cmdWebhook.PersistentFlags()
+
+	f.StringVar(&webhookInput.listenAddress, "server.address", "0.0.0.0:8828", "Address the webhook will listen on (IP:port)")
+	f.StringVar(&webhookInput.secretName, "ssl.secret.name", "", "Secret Name containing TLS certificate used for the metrics server")
+	f.StringVar(&webhookInput.secretNamespace, "ssl.secret.namespace", os.Getenv(constants.EnvOperatorPodNamespace), "Secret Name containing TLS certificate used for the metrics server")
+
+	cmdMain.AddCommand(cmdWebhook)
+}
+
+func cmdWebhookCheck(cmd *cobra.Command, args []string) {
+	if err := cmdWebhookCheckE(); err != nil {
+		logger.Err(err).Error("Fatal")
+		os.Exit(1)
+	}
+}
+
+func cmdWebhookCheckE() error {
+	ctx := util.CreateSignalContext(context.Background())
+
+	client, ok := kclient.GetDefaultFactory().Client()
+	if !ok {
+		return errors.Errorf("Unable to get client")
+	}
+
+	var admissions webhook.Admissions
+
+	admissions = append(admissions, scheduler.WebhookAdmissions(client)...)
+
+	server, err := webhookServer(ctx, client, admissions...)
+	if err != nil {
+		return err
+	}
+
+	logger.Str("addr", webhookInput.listenAddress).Info("Starting Webhook Server")
+
+	return server.StartAddr(ctx, webhookInput.listenAddress)
+}
+
+func webhookServer(ctx context.Context, client kclient.Client, admissions ...webhook.Admission) (http.Server, error) {
+	return http.NewServer(ctx,
+		http.DefaultHTTPServerSettings,
+		http.WithTLSConfigFetcherGen(func() util.TLSConfigFetcher {
+			if webhookInput.secretName != "" && webhookInput.secretNamespace != "" {
+				return util.NewSecretTLSConfig(client.Kubernetes().CoreV1().Secrets(webhookInput.secretNamespace), webhookInput.secretName)
+			}
+
+			return util.NewSelfSignedTLSConfig("operator")
+		}),
+		http.WithServeMux(
+			func(in *goHttp.ServeMux) {
+				in.HandleFunc("/ready", func(writer goHttp.ResponseWriter, request *goHttp.Request) {
+					writer.WriteHeader(goHttp.StatusOK)
+				})
+				in.HandleFunc("/health", func(writer goHttp.ResponseWriter, request *goHttp.Request) {
+					writer.WriteHeader(goHttp.StatusOK)
+				})
+			},
+			webhook.Admissions(admissions).Register(),
+		),
+	)
+}

docs/api/ArangoProfile.V1Beta1.md

@@ -406,5 +406,8 @@ Links:
 
 ### .spec.template.priority
 
-Type: `integer` <sup>[\[ref\]](https://github.com/arangodb/kube-arangodb/blob/1.2.43/pkg/apis/scheduler/v1beta1/profile_template.go#L32)</sup>
+Type: `integer` <sup>[\[ref\]](https://github.com/arangodb/kube-arangodb/blob/1.2.43/pkg/apis/scheduler/v1beta1/profile_template.go#L34)</sup>
+
+Priority defines Priority of the Profile. Higher value means Profile will get applied first.
+If Priority across Profiles is same, Profiles are also sorted by name.
 

docs/cli/arangodb_operator.md

@@ -24,6 +24,7 @@ Available Commands:
   storage         
   task          
   version         
+  webhook         
 
 Flags:
       --action.PVCResize.concurrency int                       Define limit of concurrent PVC Resizes on the cluster (default 32)
@@ -80,7 +81,7 @@ Flags:
       --kubernetes.max-batch-size int                          Size of batch during objects read (default 256)
       --kubernetes.qps float32                                 Number of queries per second for k8s API (default 15)
       --log.format string                                      Set log format. Allowed values: 'pretty', 'JSON'. If empty, default format is used (default "pretty")
-      --log.level stringArray                                  Set log levels in format <level> or <logger>=<level>. Possible loggers: action, agency, api-server, assertion, backup-operator, chaos-monkey, crd, deployment, deployment-ci, deployment-reconcile, deployment-replication, deployment-resilience, deployment-resources, deployment-storage, deployment-storage-pc, deployment-storage-service, generic-parent-operator, helm, http, inspector, integration-config-v1, integration-envoy-auth-v3, integration-scheduler-v2, integration-storage-v2, integrations, k8s-client, kubernetes-informer, monitor, networking-route-operator, operator, operator-arangojob-handler, operator-v2, operator-v2-event, operator-v2-worker, panics, platform-chart-operator, platform-pod-shutdown, platform-storage-operator, pod_compare, root, root-event-recorder, scheduler-batchjob-operator, scheduler-cronjob-operator, scheduler-deployment-operator, scheduler-pod-operator, scheduler-profile-operator, server, server-authentication (default [info])
+      --log.level stringArray                                  Set log levels in format <level> or <logger>=<level>. Possible loggers: action, agency, api-server, assertion, backup-operator, chaos-monkey, crd, deployment, deployment-ci, deployment-reconcile, deployment-replication, deployment-resilience, deployment-resources, deployment-storage, deployment-storage-pc, deployment-storage-service, generic-parent-operator, helm, http, inspector, integration-config-v1, integration-envoy-auth-v3, integration-scheduler-v2, integration-storage-v2, integrations, k8s-client, kubernetes-informer, monitor, networking-route-operator, operator, operator-arangojob-handler, operator-v2, operator-v2-event, operator-v2-worker, panics, platform-chart-operator, platform-pod-shutdown, platform-storage-operator, pod_compare, root, root-event-recorder, scheduler-batchjob-operator, scheduler-cronjob-operator, scheduler-deployment-operator, scheduler-pod-operator, scheduler-profile-operator, server, server-authentication, webhook (default [info])
       --log.sampling                                           If true, operator will try to minimize duplication of logging events (default true)
       --memory-limit uint                                      Define memory limit for hard shutdown and the dump of goroutines. Used for testing
       --metrics.excluded-prefixes stringArray                  List of the excluded metrics prefixes

docs/how-to/set_root_user_password.md

@@ -8,7 +8,7 @@ parent: How to ...
 
 1) Create a kubernetes [Secret](https://kubernetes.io/docs/tasks/configmap-secret/managing-secret-using-kubectl/) with root password:
 ```bash
-kubectl create secret generic arango-root-pwd --from-literal=password=<paste_your_password_here>
+kubectl create secret generic arango-root-pwd --from-literal=password=<paste_your_password_here> --from-literal=username=root
 ```
 
 1) Then specify the newly created secret in the ArangoDeploymentSpec:

docs/integration-sidecar.md

@@ -29,6 +29,20 @@ metadata:
     profiles.arangodb.com/deployment: << deployment name >>
 ```
 
+### Webhooks
+
+When Webhook support is enabled Integration Sidecar is supported in Kubernetes Pod resources.
+
+To inject integration sidecar for specific deployment label needs to be defined:
+
+```yaml
+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    profiles.arangodb.com/deployment: << deployment name >>
+```
+
 ### Integrations
 
 To enable integration in specific version, labels needs to be added:

integrations/storage/v2/definition/storage.pb.go

@@ -798,117 +798,115 @@ var file_integrations_storage_v2_definition_storage_proto_rawDesc = []byte{
 	0x0a, 0x30, 0x69, 0x6e, 0x74, 0x65, 0x67, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2f, 0x73,
 	0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x2f, 0x76, 0x32, 0x2f, 0x64, 0x65, 0x66, 0x69, 0x6e, 0x69,
 	0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x73, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x2e, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x12, 0x08, 0x73, 0x68, 0x75, 0x74, 0x64, 0x6f, 0x77, 0x6e, 0x1a, 0x1f, 0x67, 0x6f,
+	0x74, 0x6f, 0x12, 0x07, 0x73, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x1a, 0x1f, 0x67, 0x6f, 0x6f,
-	0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69,
+	0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d,
-	0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x23, 0x0a,
+	0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x23, 0x0a, 0x0d,
-	0x0d, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x56, 0x32, 0x50, 0x61, 0x74, 0x68, 0x12, 0x12,
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 }
 
 var (
@@ -925,46 +923,46 @@ func file_integrations_storage_v2_definition_storage_proto_rawDescGZIP() []byte
 
 var file_integrations_storage_v2_definition_storage_proto_msgTypes = make([]protoimpl.MessageInfo, 15)
 var file_integrations_storage_v2_definition_storage_proto_goTypes = []interface{}{
-	(*StorageV2Path)(nil),                 // 0: shutdown.StorageV2Path
+	(*StorageV2Path)(nil),                 // 0: storage.StorageV2Path
-	(*StorageV2Object)(nil),               // 1: shutdown.StorageV2Object
+	(*StorageV2Object)(nil),               // 1: storage.StorageV2Object
-	(*StorageV2ObjectInfo)(nil),           // 2: shutdown.StorageV2ObjectInfo
+	(*StorageV2ObjectInfo)(nil),           // 2: storage.StorageV2ObjectInfo
-	(*StorageV2InitRequest)(nil),          // 3: shutdown.StorageV2InitRequest
+	(*StorageV2InitRequest)(nil),          // 3: storage.StorageV2InitRequest
-	(*StorageV2InitResponse)(nil),         // 4: shutdown.StorageV2InitResponse
+	(*StorageV2InitResponse)(nil),         // 4: storage.StorageV2InitResponse
-	(*StorageV2ReadObjectRequest)(nil),    // 5: shutdown.StorageV2ReadObjectRequest
+	(*StorageV2ReadObjectRequest)(nil),    // 5: storage.StorageV2ReadObjectRequest
-	(*StorageV2ReadObjectResponse)(nil),   // 6: shutdown.StorageV2ReadObjectResponse
+	(*StorageV2ReadObjectResponse)(nil),   // 6: storage.StorageV2ReadObjectResponse
-	(*StorageV2WriteObjectRequest)(nil),   // 7: shutdown.StorageV2WriteObjectRequest
+	(*StorageV2WriteObjectRequest)(nil),   // 7: storage.StorageV2WriteObjectRequest
-	(*StorageV2WriteObjectResponse)(nil),  // 8: shutdown.StorageV2WriteObjectResponse
+	(*StorageV2WriteObjectResponse)(nil),  // 8: storage.StorageV2WriteObjectResponse
-	(*StorageV2HeadObjectRequest)(nil),    // 9: shutdown.StorageV2HeadObjectRequest
+	(*StorageV2HeadObjectRequest)(nil),    // 9: storage.StorageV2HeadObjectRequest
-	(*StorageV2HeadObjectResponse)(nil),   // 10: shutdown.StorageV2HeadObjectResponse
+	(*StorageV2HeadObjectResponse)(nil),   // 10: storage.StorageV2HeadObjectResponse
-	(*StorageV2DeleteObjectRequest)(nil),  // 11: shutdown.StorageV2DeleteObjectRequest
+	(*StorageV2DeleteObjectRequest)(nil),  // 11: storage.StorageV2DeleteObjectRequest
-	(*StorageV2DeleteObjectResponse)(nil), // 12: shutdown.StorageV2DeleteObjectResponse
+	(*StorageV2DeleteObjectResponse)(nil), // 12: storage.StorageV2DeleteObjectResponse
-	(*StorageV2ListObjectsRequest)(nil),   // 13: shutdown.StorageV2ListObjectsRequest
+	(*StorageV2ListObjectsRequest)(nil),   // 13: storage.StorageV2ListObjectsRequest
-	(*StorageV2ListObjectsResponse)(nil),  // 14: shutdown.StorageV2ListObjectsResponse
+	(*StorageV2ListObjectsResponse)(nil),  // 14: storage.StorageV2ListObjectsResponse
 	(*timestamppb.Timestamp)(nil),         // 15: google.protobuf.Timestamp
 }
 var file_integrations_storage_v2_definition_storage_proto_depIdxs = []int32{
-	0,  // 0: shutdown.StorageV2Object.path:type_name -> shutdown.StorageV2Path
+	0,  // 0: storage.StorageV2Object.path:type_name -> storage.StorageV2Path
-	2,  // 1: shutdown.StorageV2Object.info:type_name -> shutdown.StorageV2ObjectInfo
+	2,  // 1: storage.StorageV2Object.info:type_name -> storage.StorageV2ObjectInfo
-	15, // 2: shutdown.StorageV2ObjectInfo.last_updated:type_name -> google.protobuf.Timestamp
+	15, // 2: storage.StorageV2ObjectInfo.last_updated:type_name -> google.protobuf.Timestamp
-	0,  // 3: shutdown.StorageV2ReadObjectRequest.path:type_name -> shutdown.StorageV2Path
+	0,  // 3: storage.StorageV2ReadObjectRequest.path:type_name -> storage.StorageV2Path
-	0,  // 4: shutdown.StorageV2WriteObjectRequest.path:type_name -> shutdown.StorageV2Path
+	0,  // 4: storage.StorageV2WriteObjectRequest.path:type_name -> storage.StorageV2Path
-	0,  // 5: shutdown.StorageV2HeadObjectRequest.path:type_name -> shutdown.StorageV2Path
+	0,  // 5: storage.StorageV2HeadObjectRequest.path:type_name -> storage.StorageV2Path
-	2,  // 6: shutdown.StorageV2HeadObjectResponse.info:type_name -> shutdown.StorageV2ObjectInfo
+	2,  // 6: storage.StorageV2HeadObjectResponse.info:type_name -> storage.StorageV2ObjectInfo
-	0,  // 7: shutdown.StorageV2DeleteObjectRequest.path:type_name -> shutdown.StorageV2Path
+	0,  // 7: storage.StorageV2DeleteObjectRequest.path:type_name -> storage.StorageV2Path
-	0,  // 8: shutdown.StorageV2ListObjectsRequest.path:type_name -> shutdown.StorageV2Path
+	0,  // 8: storage.StorageV2ListObjectsRequest.path:type_name -> storage.StorageV2Path
-	1,  // 9: shutdown.StorageV2ListObjectsResponse.files:type_name -> shutdown.StorageV2Object
+	1,  // 9: storage.StorageV2ListObjectsResponse.files:type_name -> storage.StorageV2Object
-	3,  // 10: shutdown.StorageV2.Init:input_type -> shutdown.StorageV2InitRequest
+	3,  // 10: storage.StorageV2.Init:input_type -> storage.StorageV2InitRequest
-	5,  // 11: shutdown.StorageV2.ReadObject:input_type -> shutdown.StorageV2ReadObjectRequest
+	5,  // 11: storage.StorageV2.ReadObject:input_type -> storage.StorageV2ReadObjectRequest
-	7,  // 12: shutdown.StorageV2.WriteObject:input_type -> shutdown.StorageV2WriteObjectRequest
+	7,  // 12: storage.StorageV2.WriteObject:input_type -> storage.StorageV2WriteObjectRequest
-	9,  // 13: shutdown.StorageV2.HeadObject:input_type -> shutdown.StorageV2HeadObjectRequest
+	9,  // 13: storage.StorageV2.HeadObject:input_type -> storage.StorageV2HeadObjectRequest
-	11, // 14: shutdown.StorageV2.DeleteObject:input_type -> shutdown.StorageV2DeleteObjectRequest
+	11, // 14: storage.StorageV2.DeleteObject:input_type -> storage.StorageV2DeleteObjectRequest
-	13, // 15: shutdown.StorageV2.ListObjects:input_type -> shutdown.StorageV2ListObjectsRequest
+	13, // 15: storage.StorageV2.ListObjects:input_type -> storage.StorageV2ListObjectsRequest
-	4,  // 16: shutdown.StorageV2.Init:output_type -> shutdown.StorageV2InitResponse
+	4,  // 16: storage.StorageV2.Init:output_type -> storage.StorageV2InitResponse
-	6,  // 17: shutdown.StorageV2.ReadObject:output_type -> shutdown.StorageV2ReadObjectResponse
+	6,  // 17: storage.StorageV2.ReadObject:output_type -> storage.StorageV2ReadObjectResponse
-	8,  // 18: shutdown.StorageV2.WriteObject:output_type -> shutdown.StorageV2WriteObjectResponse
+	8,  // 18: storage.StorageV2.WriteObject:output_type -> storage.StorageV2WriteObjectResponse
-	10, // 19: shutdown.StorageV2.HeadObject:output_type -> shutdown.StorageV2HeadObjectResponse
+	10, // 19: storage.StorageV2.HeadObject:output_type -> storage.StorageV2HeadObjectResponse
-	12, // 20: shutdown.StorageV2.DeleteObject:output_type -> shutdown.StorageV2DeleteObjectResponse
+	12, // 20: storage.StorageV2.DeleteObject:output_type -> storage.StorageV2DeleteObjectResponse
-	14, // 21: shutdown.StorageV2.ListObjects:output_type -> shutdown.StorageV2ListObjectsResponse
+	14, // 21: storage.StorageV2.ListObjects:output_type -> storage.StorageV2ListObjectsResponse
 	16, // [16:22] is the sub-list for method output_type
 	10, // [10:16] is the sub-list for method input_type
 	10, // [10:10] is the sub-list for extension type_name

integrations/storage/v2/definition/storage.proto

@@ -20,7 +20,7 @@
 
 syntax = "proto3";
 
-package shutdown;
+package storage;
 
 import "google/protobuf/timestamp.proto";
 

integrations/storage/v2/definition/storage_grpc.pb.go

@@ -46,7 +46,7 @@ func NewStorageV2Client(cc grpc.ClientConnInterface) StorageV2Client {
 
 func (c *storageV2Client) Init(ctx context.Context, in *StorageV2InitRequest, opts ...grpc.CallOption) (*StorageV2InitResponse, error) {
 	out := new(StorageV2InitResponse)
-	err := c.cc.Invoke(ctx, "/shutdown.StorageV2/Init", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/storage.StorageV2/Init", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -54,7 +54,7 @@ func (c *storageV2Client) Init(ctx context.Context, in *StorageV2InitRequest, op
 }
 
 func (c *storageV2Client) ReadObject(ctx context.Context, in *StorageV2ReadObjectRequest, opts ...grpc.CallOption) (StorageV2_ReadObjectClient, error) {
-	stream, err := c.cc.NewStream(ctx, &StorageV2_ServiceDesc.Streams[0], "/shutdown.StorageV2/ReadObject", opts...)
+	stream, err := c.cc.NewStream(ctx, &StorageV2_ServiceDesc.Streams[0], "/storage.StorageV2/ReadObject", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -86,7 +86,7 @@ func (x *storageV2ReadObjectClient) Recv() (*StorageV2ReadObjectResponse, error)
 }
 
 func (c *storageV2Client) WriteObject(ctx context.Context, opts ...grpc.CallOption) (StorageV2_WriteObjectClient, error) {
-	stream, err := c.cc.NewStream(ctx, &StorageV2_ServiceDesc.Streams[1], "/shutdown.StorageV2/WriteObject", opts...)
+	stream, err := c.cc.NewStream(ctx, &StorageV2_ServiceDesc.Streams[1], "/storage.StorageV2/WriteObject", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -121,7 +121,7 @@ func (x *storageV2WriteObjectClient) CloseAndRecv() (*StorageV2WriteObjectRespon
 
 func (c *storageV2Client) HeadObject(ctx context.Context, in *StorageV2HeadObjectRequest, opts ...grpc.CallOption) (*StorageV2HeadObjectResponse, error) {
 	out := new(StorageV2HeadObjectResponse)
-	err := c.cc.Invoke(ctx, "/shutdown.StorageV2/HeadObject", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/storage.StorageV2/HeadObject", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -130,7 +130,7 @@ func (c *storageV2Client) HeadObject(ctx context.Context, in *StorageV2HeadObjec
 
 func (c *storageV2Client) DeleteObject(ctx context.Context, in *StorageV2DeleteObjectRequest, opts ...grpc.CallOption) (*StorageV2DeleteObjectResponse, error) {
 	out := new(StorageV2DeleteObjectResponse)
-	err := c.cc.Invoke(ctx, "/shutdown.StorageV2/DeleteObject", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/storage.StorageV2/DeleteObject", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -138,7 +138,7 @@ func (c *storageV2Client) DeleteObject(ctx context.Context, in *StorageV2DeleteO
 }
 
 func (c *storageV2Client) ListObjects(ctx context.Context, in *StorageV2ListObjectsRequest, opts ...grpc.CallOption) (StorageV2_ListObjectsClient, error) {
-	stream, err := c.cc.NewStream(ctx, &StorageV2_ServiceDesc.Streams[2], "/shutdown.StorageV2/ListObjects", opts...)
+	stream, err := c.cc.NewStream(ctx, &StorageV2_ServiceDesc.Streams[2], "/storage.StorageV2/ListObjects", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -233,7 +233,7 @@ func _StorageV2_Init_Handler(srv interface{}, ctx context.Context, dec func(inte
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/shutdown.StorageV2/Init",
+		FullMethod: "/storage.StorageV2/Init",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(StorageV2Server).Init(ctx, req.(*StorageV2InitRequest))
@@ -298,7 +298,7 @@ func _StorageV2_HeadObject_Handler(srv interface{}, ctx context.Context, dec fun
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/shutdown.StorageV2/HeadObject",
+		FullMethod: "/storage.StorageV2/HeadObject",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(StorageV2Server).HeadObject(ctx, req.(*StorageV2HeadObjectRequest))
@@ -316,7 +316,7 @@ func _StorageV2_DeleteObject_Handler(srv interface{}, ctx context.Context, dec f
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/shutdown.StorageV2/DeleteObject",
+		FullMethod: "/storage.StorageV2/DeleteObject",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(StorageV2Server).DeleteObject(ctx, req.(*StorageV2DeleteObjectRequest))
@@ -349,7 +349,7 @@ func (x *storageV2ListObjectsServer) Send(m *StorageV2ListObjectsResponse) error
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
 var StorageV2_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "shutdown.StorageV2",
+	ServiceName: "storage.StorageV2",
 	HandlerType: (*StorageV2Server)(nil),
 	Methods: []grpc.MethodDesc{
 		{

pkg/api/api.go

@@ -1,7 +1,7 @@
 //
 // DISCLAIMER
 //
-// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
+// Copyright 2016-2024 ArangoDB GmbH, Cologne, Germany
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -21,6 +21,7 @@
 package api
 
 import (
+	"context"
 	"net"
 	"net/http"
 	"time"
@@ -73,7 +74,7 @@ func NewServer(cli typedCore.CoreV1Interface, cfg ServerConfig) (*Server, error)
 		return nil, err
 	}
 
-	tlsConfig, err := prepareTLSConfig(cli, cfg)
+	tlsConfig, err := prepareTLSConfig(cli, cfg).Eval(context.Background())
 	if err != nil {
 		return nil, err
 	}

pkg/api/tls.go

@@ -21,70 +21,15 @@
 package api
 
 import (
-	"context"
-	"crypto/tls"
-	"time"
-
-	core "k8s.io/api/core/v1"
-	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
 	typedCore "k8s.io/client-go/kubernetes/typed/core/v1"
 
-	"github.com/arangodb-helper/go-certificates"
+	"github.com/arangodb/kube-arangodb/pkg/util"
-
-	"github.com/arangodb/kube-arangodb/pkg/util/errors"
 )
 
-func prepareTLSConfig(cli typedCore.CoreV1Interface, cfg ServerConfig) (*tls.Config, error) {
+func prepareTLSConfig(cli typedCore.CoreV1Interface, cfg ServerConfig) util.TLSConfigFetcher {
-	cert, key, err := loadOrSelfSignCertificate(cli, cfg)
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-	tlsConfig, err := createTLSConfig(cert, key)
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-	return tlsConfig, nil
-}
-
-// loadOrSelfSignCertificate loads TLS certificate from secret or creates a new one
-func loadOrSelfSignCertificate(cli typedCore.CoreV1Interface, cfg ServerConfig) (string, string, error) {
 	if cfg.TLSSecretName != "" {
-		// Load TLS certificate from secret
+		return util.NewSecretTLSConfig(cli.Secrets(cfg.Namespace), cfg.TLSSecretName)
-		s, err := cli.Secrets(cfg.Namespace).Get(context.Background(), cfg.TLSSecretName, meta.GetOptions{})
-		if err != nil {
-			return "", "", err
-		}
-		certBytes, found := s.Data[core.TLSCertKey]
-		if !found {
-			return "", "", errors.Errorf("No %s found in secret %s", core.TLSCertKey, cfg.TLSSecretName)
-		}
-		keyBytes, found := s.Data[core.TLSPrivateKeyKey]
-		if !found {
-			return "", "", errors.Errorf("No %s found in secret %s", core.TLSPrivateKeyKey, cfg.TLSSecretName)
-		}
-		return string(certBytes), string(keyBytes), nil
-	}
-	// Secret not specified, create our own TLS certificate
-	options := certificates.CreateCertificateOptions{
-		CommonName: cfg.ServerName,
-		Hosts:      append([]string{cfg.ServerName}, cfg.ServerAltNames...),
-		ValidFrom:  time.Now(),
-		ValidFor:   time.Hour * 24 * 365 * 10,
-		IsCA:       false,
-		ECDSACurve: "P256",
-	}
-	return certificates.CreateCertificate(options, nil)
 	}
 
-// createTLSConfig creates a TLS config based on given config
+	return util.NewSelfSignedTLSConfig(cfg.ServerName, cfg.ServerAltNames...)
-func createTLSConfig(cert, key string) (*tls.Config, error) {
-	var result *tls.Config
-	c, err := tls.X509KeyPair([]byte(cert), []byte(key))
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-	result = &tls.Config{
-		Certificates: []tls.Certificate{c},
-	}
-	return result, nil
 }

pkg/apis/scheduler/v1beta1/profile_container_template.go

@@ -28,8 +28,10 @@ import (
 )
 
 type ProfileContainerTemplate struct {
+	// Containers applies values per container
 	Containers schedulerContainerApi.Containers `json:"containers,omitempty"`
 
+	// All applies generic values to all Containers
 	All *schedulerContainerApi.Generic `json:"all,omitempty"`
 }
 

pkg/apis/scheduler/v1beta1/profile_template.go

@@ -29,10 +29,14 @@ import (
 )
 
 type ProfileTemplate struct {
+	// Priority defines Priority of the Profile. Higher value means Profile will get applied first.
+	// If Priority across Profiles is same, Profiles are also sorted by name.
 	Priority *int `json:"priority,omitempty"`
 
+	// Pod Template
 	Pod *schedulerPodApi.Pod `json:"pod,omitempty"`
 
+	// Container Template
 	Container *ProfileContainerTemplate `json:"container,omitempty"`
 }
 

pkg/deployment/patch/item.go

@@ -1,7 +1,7 @@
 //
 // DISCLAIMER
 //
-// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
+// Copyright 2016-2024 ArangoDB GmbH, Cologne, Germany
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -60,6 +60,8 @@ func (p Path) MarshalJSON() ([]byte, error) {
 	return json.Marshal(v)
 }
 
+type Items []Item
+
 type Item struct {
 	Op    Operation   `json:"op"`
 	Path  Path        `json:"path"`

pkg/exporter/exporter.go

@@ -1,7 +1,7 @@
 //
 // DISCLAIMER
 //
-// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
+// Copyright 2016-2024 ArangoDB GmbH, Cologne, Germany
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -20,13 +20,6 @@
 
 package exporter
 
-import (
-	"net/http"
-	"time"
-
-	operatorHTTP "github.com/arangodb/kube-arangodb/pkg/util/http"
-)
-
 type Authentication func() (string, error)
 
 // CreateArangodJwtAuthorizationHeader calculates a JWT authorization header, for authorization
@@ -35,27 +28,3 @@ type Authentication func() (string, error)
 func CreateArangodJwtAuthorizationHeader(jwt string) (string, error) {
 	return "bearer " + jwt, nil
 }
-
-func NewExporter(endpoint string, url string, handler http.Handler) operatorHTTP.PlainServer {
-	s := http.NewServeMux()
-
-	s.Handle(url, handler)
-
-	s.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.Write([]byte(`<html>
-             <head><title>ArangoDB Exporter</title></head>
-             <body>
-             <h1>ArangoDB Exporter</h1>
-             <p><a href='/metrics'>Metrics</a></p>
-             </body>
-             </html>`))
-	})
-
-	return operatorHTTP.NewServer(&http.Server{
-		Addr:              endpoint,
-		ReadTimeout:       time.Second * 30,
-		ReadHeaderTimeout: time.Second * 15,
-		WriteTimeout:      time.Second * 30,
-		Handler:           s,
-	})
-}

pkg/handlers/scheduler/admissions.go

@@ -0,0 +1,43 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package scheduler
+
+import (
+	core "k8s.io/api/core/v1"
+
+	"github.com/arangodb/kube-arangodb/pkg/handlers/scheduler/webhooks/policies"
+	"github.com/arangodb/kube-arangodb/pkg/util/k8sutil/inspector/constants"
+	"github.com/arangodb/kube-arangodb/pkg/util/kclient"
+	"github.com/arangodb/kube-arangodb/pkg/webhook"
+)
+
+func WebhookAdmissions(client kclient.Client) webhook.Admissions {
+	return webhook.Admissions{
+		webhook.NewAdmissionHandler[*core.Pod](
+			"policies",
+			constants.PodGroup,
+			constants.PodVersionV1,
+			constants.PodKind,
+			constants.PodResource,
+			policies.NewPoliciesPodHandler(client),
+		),
+	}
+}

pkg/handlers/scheduler/webhooks/policies/handler.go

@@ -0,0 +1,137 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package policies
+
+import (
+	"context"
+	"strings"
+
+	admission "k8s.io/api/admission/v1"
+	core "k8s.io/api/core/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	schedulerApi "github.com/arangodb/kube-arangodb/pkg/apis/scheduler/v1beta1"
+	"github.com/arangodb/kube-arangodb/pkg/deployment/patch"
+	"github.com/arangodb/kube-arangodb/pkg/logging"
+	"github.com/arangodb/kube-arangodb/pkg/scheduler"
+	"github.com/arangodb/kube-arangodb/pkg/util"
+	"github.com/arangodb/kube-arangodb/pkg/util/constants"
+	"github.com/arangodb/kube-arangodb/pkg/util/errors"
+	kerrors "github.com/arangodb/kube-arangodb/pkg/util/k8sutil/kerrors"
+	"github.com/arangodb/kube-arangodb/pkg/util/kclient"
+	"github.com/arangodb/kube-arangodb/pkg/webhook"
+)
+
+func NewPoliciesPodHandler(client kclient.Client) webhook.Handler[*core.Pod] {
+	return handler{
+		client: client,
+	}
+}
+
+var _ webhook.MutationHandler[*core.Pod] = handler{}
+
+type handler struct {
+	client kclient.Client
+}
+
+func (h handler) CanHandle(ctx context.Context, log logging.Logger, t webhook.AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) bool {
+	if request == nil {
+		return false
+	}
+
+	if request.Operation != admission.Create {
+		return false
+	}
+
+	if new == nil {
+		return false
+	}
+
+	_, ok := new.GetLabels()[constants.ProfilesDeployment]
+	return ok
+}
+
+func (h handler) Mutate(ctx context.Context, log logging.Logger, t webhook.AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) (webhook.MutationResponse, error) {
+	if !h.CanHandle(ctx, log, t, request, old, new) {
+		return webhook.MutationResponse{}, errors.Errorf("Object cannot be handled")
+	}
+
+	labels := new.GetLabels()
+
+	v := labels[constants.ProfilesDeployment]
+	depl, err := h.client.Arango().DatabaseV1().ArangoDeployments(request.Namespace).Get(ctx, v, meta.GetOptions{})
+	if err != nil {
+		if kerrors.IsNotFound(err) {
+			return webhook.MutationResponse{
+				ValidationResponse: webhook.NewValidationResponse(false, "ArangoDeployment %s/%s not found", request.Namespace, v),
+			}, nil
+		}
+		return webhook.MutationResponse{
+			ValidationResponse: webhook.NewValidationResponse(false, "Unable to get ArangoDeployment %s/%s: %s", request.Namespace, v, err.Error()),
+		}, nil
+	}
+
+	profiles := util.FilterList(util.FormatList(strings.Split(labels[constants.ProfilesList], ","), func(s string) string {
+		return strings.TrimSpace(s)
+	}), func(s string) bool {
+		return s != ""
+	})
+
+	calculatedProfiles, profilesChecksum, err := scheduler.Profiles(ctx, h.client.Arango().SchedulerV1beta1().ArangoProfiles(depl.GetNamespace()), labels, profiles...)
+	if err != nil {
+		return webhook.MutationResponse{
+			ValidationResponse: webhook.NewValidationResponse(false, "Unable to get ArangoProfiles: %s", err.Error()),
+		}, nil
+	}
+
+	var template core.PodTemplateSpec
+
+	template.Labels = new.GetLabels()
+	template.Annotations = new.GetAnnotations()
+	new.Spec.DeepCopyInto(&template.Spec)
+
+	if template.Annotations == nil {
+		template.Annotations = map[string]string{}
+	}
+
+	template.Annotations[constants.ProfilesAnnotationApplied] = "true"
+	template.Annotations[constants.ProfilesAnnotationChecksum] = profilesChecksum
+	template.Annotations[constants.ProfilesAnnotationProfiles] = strings.Join(util.FormatList(calculatedProfiles, func(a util.KV[string, schedulerApi.ProfileAcceptedTemplate]) string {
+		return a.K
+	}), ",")
+
+	if err := schedulerApi.ProfileTemplates(util.FormatList(calculatedProfiles, func(a util.KV[string, schedulerApi.ProfileAcceptedTemplate]) *schedulerApi.ProfileTemplate {
+		return a.V.Template
+	})).RenderOnTemplate(&template); err != nil {
+		return webhook.MutationResponse{
+			ValidationResponse: webhook.NewValidationResponse(false, "Unable to get apply ArangoProfiles: %s", err.Error()),
+		}, nil
+	}
+
+	return webhook.MutationResponse{
+		ValidationResponse: webhook.ValidationResponse{Allowed: true},
+		Patch: []patch.Item{
+			patch.ItemReplace(patch.NewPath("metadata", "labels"), template.Labels),
+			patch.ItemReplace(patch.NewPath("metadata", "annotations"), template.Annotations),
+			patch.ItemReplace(patch.NewPath("spec"), template.Spec),
+		},
+	}, nil
+}

pkg/logging/http.go

@@ -0,0 +1,40 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package logging
+
+import (
+	"net/http"
+
+	"github.com/rs/zerolog"
+)
+
+func HTTPRequestWrap(request *http.Request) Wrap {
+	return func(in *zerolog.Event) *zerolog.Event {
+		if request == nil {
+			return in
+		}
+
+		in = in.Str("method", request.Method)
+		in = in.Str("url", request.RequestURI)
+
+		return in
+	}
+}

pkg/server/server.go

@@ -29,13 +29,10 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/jessevdk/go-assets"
-	core "k8s.io/api/core/v1"
-	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
 	typedCore "k8s.io/client-go/kubernetes/typed/core/v1"
 
-	"github.com/arangodb-helper/go-certificates"
-
 	"github.com/arangodb/kube-arangodb/dashboard"
+	"github.com/arangodb/kube-arangodb/pkg/util"
 	"github.com/arangodb/kube-arangodb/pkg/util/errors"
 	operatorHTTP "github.com/arangodb/kube-arangodb/pkg/util/http"
 	"github.com/arangodb/kube-arangodb/pkg/util/metrics"
@@ -108,40 +105,16 @@ func NewServer(cli typedCore.CoreV1Interface, cfg Config, deps Dependencies) (*S
 		TLSNextProto:      make(map[string]func(*http.Server, *tls.Conn, http.Handler)),
 	}
 
-	var cert, key string
+	var fetcher util.TLSConfigFetcher
 	if cfg.TLSSecretName != "" && cfg.TLSSecretNamespace != "" {
 		serverLogger.Str("addr", cfg.Address).Str("secret", cfg.TLSSecretName).Str("secret-namespace", cfg.TLSSecretNamespace).Info("Using existing TLS Certificate")
-		s, err := cli.Secrets(cfg.TLSSecretNamespace).Get(context.Background(), cfg.TLSSecretName, meta.GetOptions{})
+		fetcher = util.NewSecretTLSConfig(cli.Secrets(cfg.TLSSecretNamespace), cfg.TLSSecretName)
-		if err != nil {
-			return nil, errors.WithStack(err)
-		}
-		certBytes, found := s.Data[core.TLSCertKey]
-		if !found {
-			return nil, errors.WithStack(errors.Errorf("No %s found in secret %s", core.TLSCertKey, cfg.TLSSecretName))
-		}
-		keyBytes, found := s.Data[core.TLSPrivateKeyKey]
-		if !found {
-			return nil, errors.WithStack(errors.Errorf("No %s found in secret %s", core.TLSPrivateKeyKey, cfg.TLSSecretName))
-		}
-		cert = string(certBytes)
-		key = string(keyBytes)
 	} else {
 		serverLogger.Str("addr", cfg.Address).Info("Using SelfSigned TLS Certificate")
-		options := certificates.CreateCertificateOptions{
+		fetcher = util.NewSelfSignedTLSConfig(cfg.PodName, cfg.PodIP)
-			CommonName: cfg.PodName,
-			Hosts:      []string{cfg.PodName, cfg.PodIP},
-			ValidFrom:  time.Now(),
-			ValidFor:   time.Hour * 24 * 365 * 10,
-			IsCA:       false,
-			ECDSACurve: "P256",
 	}
-		var err error
+
-		cert, key, err = certificates.CreateCertificate(options, nil)
+	tlsConfig, err := fetcher.Eval(context.Background())
-		if err != nil {
-			return nil, errors.WithStack(err)
-		}
-	}
-	tlsConfig, err := createTLSConfig(cert, key)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -256,19 +229,6 @@ func (s *Server) Run() error {
 	return nil
 }
 
-// createTLSConfig creates a TLS config based on given config
-func createTLSConfig(cert, key string) (*tls.Config, error) {
-	var result *tls.Config
-	c, err := tls.X509KeyPair([]byte(cert), []byte(key))
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-	result = &tls.Config{
-		Certificates: []tls.Certificate{c},
-	}
-	return result, nil
-}
-
 func ready(probes ...*probe.ReadyProbe) func(w http.ResponseWriter, r *http.Request) {
 	return func(w http.ResponseWriter, r *http.Request) {
 		for _, probe := range probes {

pkg/util/constants/profiles.go

@@ -26,6 +26,11 @@ const ProfileGroup = "profiles.arangodb.com"
 
 const ProfilesDeployment = ProfileGroup + "/deployment"
 const ProfilesIntegrationPrefix = "integration." + ProfileGroup
+const ProfilesList = ProfileGroup + "/profiles"
+
+const ProfilesAnnotationApplied = ProfileGroup + "/applied"
+const ProfilesAnnotationChecksum = ProfileGroup + "/checksum"
+const ProfilesAnnotationProfiles = ProfileGroup + "/profiles"
 
 const (
 	ProfilesIntegrationAuthn    = "authn"

pkg/util/http/error.go

@@ -0,0 +1,76 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package http
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+)
+
+func WrapError(code int, err error) error {
+	if err == nil {
+		return nil
+	}
+
+	return NewError(code, err.Error())
+}
+
+func NewError(code int, format string, args ...any) error {
+	return Error{
+		Code:    code,
+		Message: fmt.Sprintf(format, args...),
+	}
+}
+
+func IsError(err error) (Error, bool) {
+	if err == nil {
+		return Error{}, false
+	}
+
+	var v Error
+	if errors.As(err, &v) {
+		return v, true
+	}
+
+	return Error{}, false
+}
+
+type Error struct {
+	Code    int
+	Message string
+}
+
+func (e Error) Error() string {
+	return fmt.Sprintf("HTTP Error (%d): %s", e.Code, e.Message)
+}
+
+func (e Error) JSON() []byte {
+	data, err := json.Marshal(map[string]any{
+		"Code":    e.Code,
+		"Message": e.Message,
+	})
+	if err != nil {
+		return nil
+	}
+
+	return data
+}

pkg/util/http/server.go

@@ -21,140 +21,147 @@
 package http
 
 import (
+	"context"
 	"crypto/tls"
+	"net"
 	"net/http"
-	"sync"
+	"time"
-
-	"github.com/arangodb-helper/go-certificates"
 
+	"github.com/arangodb/kube-arangodb/pkg/util"
 	"github.com/arangodb/kube-arangodb/pkg/util/errors"
 )
 
-func NewServer(server *http.Server) PlainServer {
+func DefaultHTTPServerSettings(in *http.Server, _ context.Context) error {
-	return &plainServer{server: server}
+	in.ReadTimeout = time.Second * 30
+	in.ReadHeaderTimeout = time.Second * 15
+	in.WriteTimeout = time.Second * 30
+	in.TLSNextProto = make(map[string]func(*http.Server, *tls.Conn, http.Handler))
+
+	return nil
 }
 
-type ServerRunner interface {
+func WithTLSConfigFetcherGen(gen func() util.TLSConfigFetcher) util.ModEP1[http.Server, context.Context] {
-	Stop()
+	return WithTLSConfigFetcher(gen())
-	Wait() error
 }
 
-type PlainServer interface {
+func WithTLSConfigFetcher(fetcher util.TLSConfigFetcher) util.ModEP1[http.Server, context.Context] {
-	Server
+	return func(in *http.Server, p1 context.Context) error {
-	WithSSL(key, cert string) (Server, error)
+		v, err := fetcher.Eval(p1)
-	WithKeyfile(keyfile string) (Server, error)
+		if err != nil {
+			return err
+		}
+
+		in.TLSConfig = v
+
+		return nil
+	}
+}
+
+func WithServeMux(mods ...util.Mod[http.ServeMux]) util.ModEP1[http.Server, context.Context] {
+	return func(in *http.Server, p1 context.Context) error {
+		mux := http.NewServeMux()
+
+		util.ApplyMods(mux, mods...)
+
+		in.Handler = mux
+
+		return nil
+	}
+}
+
+func NewServer(ctx context.Context, mods ...util.ModEP1[http.Server, context.Context]) (Server, error) {
+	var sv http.Server
+
+	if err := util.ApplyModsEP1(&sv, ctx, mods...); err != nil {
+		return nil, err
+	}
+
+	return &server{
+		server: &sv,
+	}, nil
 }
 
 type Server interface {
-	Start() (ServerRunner, error)
+	AsyncAddr(ctx context.Context, addr string) func() error
+	Async(ctx context.Context, ln net.Listener) func() error
+
+	StartAddr(ctx context.Context, addr string) error
+	Start(ctx context.Context, ln net.Listener) error
 }
 
-var _ Server = &tlsServer{}
+type server struct {
-
-type tlsServer struct {
 	server *http.Server
 }
 
-func (t *tlsServer) Start() (ServerRunner, error) {
+func (s *server) AsyncAddr(ctx context.Context, addr string) func() error {
-	i := serverRunner{
+	var err error
-		stopCh: make(chan struct{}),
-		doneCh: make(chan struct{}),
-	}
 
-	go i.run(t.server, func(s *http.Server) error {
+	done := make(chan any)
-		return s.ListenAndServeTLS("", "")
-	})
 
-	return &i, nil
-}
-
-var _ PlainServer = &plainServer{}
-
-type plainServer struct {
-	server *http.Server
-}
-
-func (p *plainServer) WithKeyfile(keyfile string) (Server, error) {
-	certificate, err := certificates.LoadKeyFile(keyfile)
-	if err != nil {
-		return nil, err
-	}
-
-	s := p.server
-	s.TLSConfig = &tls.Config{
-		Certificates: []tls.Certificate{certificate},
-	}
-
-	return &tlsServer{server: s}, nil
-}
-
-func (p *plainServer) Start() (ServerRunner, error) {
-	i := serverRunner{
-		stopCh: make(chan struct{}),
-		doneCh: make(chan struct{}),
-	}
-
-	go i.run(p.server, func(s *http.Server) error {
-		return s.ListenAndServe()
-	})
-
-	return &i, nil
-}
-
-func (p *plainServer) WithSSL(key, cert string) (Server, error) {
-	certificate, err := tls.LoadX509KeyPair(cert, key)
-	if err != nil {
-		return nil, err
-	}
-
-	s := p.server
-	s.TLSConfig = &tls.Config{
-		Certificates: []tls.Certificate{certificate},
-	}
-
-	return &tlsServer{server: s}, nil
-}
-
-var _ ServerRunner = &serverRunner{}
-
-type serverRunner struct {
-	lock sync.Mutex
-
-	stopCh chan struct{}
-	doneCh chan struct{}
-	err    error
-}
-
-func (s *serverRunner) run(server *http.Server, f func(s *http.Server) error) {
 	go func() {
-		defer close(s.doneCh)
+		defer close(done)
-		if err := f(server); err != nil {
+
+		err = s.StartAddr(ctx, addr)
+	}()
+
+	return func() error {
+		<-done
+
+		return err
+	}
+}
+
+func (s *server) Async(ctx context.Context, ln net.Listener) func() error {
+	var err error
+
+	done := make(chan any)
+
+	go func() {
+		defer close(done)
+
+		err = s.Start(ctx, ln)
+	}()
+
+	return func() error {
+		<-done
+
+		return err
+	}
+}
+
+func (s *server) StartAddr(ctx context.Context, addr string) error {
+	ln, err := net.Listen("tcp", addr)
+	if err != nil {
+		return err
+	}
+
+	return s.Start(ctx, ln)
+}
+
+func (s *server) Start(ctx context.Context, ln net.Listener) error {
+	go func() {
+		<-ctx.Done()
+
+		if err := s.server.Close(); err != nil {
 			if !errors.Is(err, http.ErrServerClosed) {
-				s.err = err
+				logger.Err(err).Warn("Unable to close server")
 			}
 		}
 	}()
 
-	<-s.stopCh
+	if s.server.TLSConfig == nil {
-
+		if err := s.server.Serve(ln); err != nil {
-	server.Close()
+			if !errors.Is(err, http.ErrServerClosed) {
-
+				return err
-	<-s.doneCh
+			}
+		}
+	} else {
+		if err := s.server.ServeTLS(ln, "", ""); err != nil {
+			if !errors.Is(err, http.ErrServerClosed) {
+				return err
 			}
-
-func (s *serverRunner) Stop() {
-	s.lock.Lock()
-	defer s.lock.Unlock()
-	select {
-	case <-s.stopCh:
-		return
-	default:
-		close(s.stopCh)
 		}
 	}
 
-func (s *serverRunner) Wait() error {
+	return nil
-	<-s.doneCh
-
-	return s.err
 }

pkg/util/list.go

@@ -122,6 +122,18 @@ func FormatList[A, B any](in []A, format func(A) B) []B {
 	return r
 }
 
+func FilterList[A any](in []A, filter func(A) bool) []A {
+	r := make([]A, 0, len(in))
+
+	for _, el := range in {
+		if filter(el) {
+			r = append(r, el)
+		}
+	}
+
+	return r
+}
+
 func ContainsList[A comparable](in []A, item A) bool {
 	for _, el := range in {
 		if el == item {

pkg/util/mod.go

@@ -22,16 +22,6 @@ package util
 
 func emptyMod[T any](_ *T) {}
 
-func WithMods[T any](mods ...Mod[T]) Mod[T] {
-	return func(in *T) {
-		for _, m := range mods {
-			if m != nil {
-				m(in)
-			}
-		}
-	}
-}
-
 type Mod[T any] func(in *T)
 
 func (m Mod[T]) Optional() Mod[T] {
@@ -47,3 +37,51 @@ func ApplyMods[T any](in *T, mods ...Mod[T]) {
 		mod(in)
 	}
 }
+
+func emptyModE[T any](_ *T) error {
+	return nil
+}
+
+type ModE[T any] func(in *T) error
+
+func (m ModE[T]) Optional() ModE[T] {
+	if m == nil {
+		return emptyModE[T]
+	}
+
+	return m
+}
+
+func ApplyModsE[T any](in *T, mods ...ModE[T]) error {
+	for _, mod := range mods {
+		if err := mod(in); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func emptyModEP1[T, P1 any](_ *T, _ P1) error {
+	return nil
+}
+
+type ModEP1[T, P1 any] func(in *T, p1 P1) error
+
+func (m ModEP1[T, P1]) Optional() ModEP1[T, P1] {
+	if m == nil {
+		return emptyModEP1[T, P1]
+	}
+
+	return m
+}
+
+func ApplyModsEP1[T, P1 any](in *T, p1 P1, mods ...ModEP1[T, P1]) error {
+	for _, mod := range mods {
+		if err := mod(in, p1); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

pkg/util/refs.go

@@ -22,6 +22,8 @@ package util
 
 import (
 	"reflect"
+
+	"github.com/pkg/errors"
 )
 
 // NewPointer returns a reference to a copy of the pointer value
@@ -135,6 +137,42 @@ func InitType[T interface{}](in *T) *T {
 	return &q
 }
 
+func DeepType[T any]() (T, error) {
+	var z T
+
+	if err := InitDeepType(&z); err != nil {
+		return Default[T](), err
+	}
+
+	return z, nil
+}
+
+func InitDeepType(in any) error {
+	return initDeepType(reflect.ValueOf(in))
+}
+
+func initDeepType(v reflect.Value) error {
+	switch v.Kind() {
+	case reflect.Pointer:
+		if !v.Elem().CanSet() {
+			return errors.Errorf("Unable to set interface")
+		}
+
+		switch v.Elem().Kind() {
+		case reflect.Pointer:
+			nv := reflect.New(v.Type().Elem().Elem())
+			if err := initDeepType(nv); err != nil {
+				return err
+			}
+			v.Elem().Set(nv)
+		default:
+			v.Elem().Set(reflect.New(v.Elem().Type()).Elem())
+		}
+	}
+
+	return nil
+}
+
 type ConditionalFunction[T interface{}] func() (T, bool)
 type ConditionalP1Function[T, P1 interface{}] func(p1 P1) (T, bool)
 

pkg/util/tests/http.go

@@ -0,0 +1,58 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package tests
+
+import (
+	"context"
+	"fmt"
+	"net"
+	goHttp "net/http"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/arangodb/kube-arangodb/pkg/util"
+	"github.com/arangodb/kube-arangodb/pkg/util/http"
+)
+
+func NewHTTPServer(ctx context.Context, t *testing.T, mods ...util.ModEP1[goHttp.Server, context.Context]) string {
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err)
+
+	pr, ok := ln.Addr().(*net.TCPAddr)
+	require.True(t, ok)
+
+	addr, port := pr.IP.String(), pr.Port
+
+	server, err := http.NewServer(ctx, mods...)
+	require.NoError(t, err)
+
+	closer := server.Async(ctx, ln)
+
+	WaitForTCPPort(addr, port).WithContextTimeoutT(t, ctx, 10*time.Second, 125*time.Millisecond)
+
+	go func() {
+		require.NoError(t, closer())
+	}()
+
+	return fmt.Sprintf("%s:%d", addr, port)
+}

pkg/util/tests/kubernetes.go

@@ -55,6 +55,7 @@ import (
 	arangoClientSet "github.com/arangodb/kube-arangodb/pkg/generated/clientset/versioned"
 	operator "github.com/arangodb/kube-arangodb/pkg/operatorV2"
 	"github.com/arangodb/kube-arangodb/pkg/operatorV2/operation"
+	"github.com/arangodb/kube-arangodb/pkg/util"
 	"github.com/arangodb/kube-arangodb/pkg/util/errors"
 	"github.com/arangodb/kube-arangodb/pkg/util/k8sutil/kerrors"
 	"github.com/arangodb/kube-arangodb/pkg/util/kclient"
@@ -1506,13 +1507,8 @@ func NewMetaObjectInDefaultNamespace[T meta.Object](t *testing.T, name string, m
 }
 
 func NewMetaObject[T meta.Object](t *testing.T, namespace, name string, mods ...MetaObjectMod[T]) T {
-	var obj T
+	obj, err := util.DeepType[T]()
-
+	require.NoError(t, err)
-	if objT := reflect.TypeOf(obj); objT.Kind() == reflect.Pointer {
-		newObj := reflect.New(objT.Elem())
-
-		reflect.ValueOf(&obj).Elem().Set(newObj)
-	}
 
 	if IsNamespaced(obj) {
 		obj.SetNamespace(namespace)

pkg/util/tests/port.go

@@ -0,0 +1,42 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package tests
+
+import (
+	"fmt"
+	"net"
+	"time"
+)
+
+func WaitForTCPPort(addr string, port int) Timeout {
+	return func() error {
+		conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", addr, port), time.Second)
+		if err != nil {
+			return nil
+		}
+
+		if err := conn.Close(); err != nil {
+			return nil
+		}
+
+		return Interrupt()
+	}
+}

pkg/util/tests/time.go

@@ -21,6 +21,7 @@
 package tests
 
 import (
+	"context"
 	"testing"
 	"time"
 
@@ -83,6 +84,36 @@ func (t Timeout) WithTimeout(timeout, interval time.Duration) error {
 	}
 }
 
+func (t Timeout) WithContextTimeout(ctx context.Context, timeout, interval time.Duration) error {
+	timeoutT := time.NewTimer(timeout)
+	defer timeoutT.Stop()
+
+	intervalT := time.NewTicker(interval)
+	defer intervalT.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return errors.Errorf("ContextCancelled!")
+		case <-timeoutT.C:
+			return errors.Errorf("Timeouted!")
+		case <-intervalT.C:
+			if err := t(); err != nil {
+				var interrupt interrupt
+				if errors.As(err, &interrupt) {
+					return nil
+				}
+
+				return err
+			}
+		}
+	}
+}
+
 func (t Timeout) WithTimeoutT(z *testing.T, timeout, interval time.Duration) {
 	require.NoError(z, t.WithTimeout(timeout, interval))
 }
+
+func (t Timeout) WithContextTimeoutT(z *testing.T, ctx context.Context, timeout, interval time.Duration) {
+	require.NoError(z, t.WithContextTimeout(ctx, timeout, interval))
+}

pkg/util/tls.go

@@ -0,0 +1,121 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package util
+
+import (
+	"context"
+	"crypto/tls"
+	"time"
+
+	core "k8s.io/api/core/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/arangodb-helper/go-certificates"
+
+	"github.com/arangodb/kube-arangodb/pkg/util/errors"
+	"github.com/arangodb/kube-arangodb/pkg/util/globals"
+	"github.com/arangodb/kube-arangodb/pkg/util/k8sutil/inspector/generic"
+)
+
+type TLSConfigFetcher func(ctx context.Context) (*tls.Config, error)
+
+func (t TLSConfigFetcher) Eval(ctx context.Context) (*tls.Config, error) {
+	if t == nil {
+		return EmptyTLSConfig(ctx)
+	}
+
+	return t(ctx)
+}
+
+func EmptyTLSConfig(ctx context.Context) (*tls.Config, error) {
+	return nil, nil
+}
+
+func NewSelfSignedTLSConfig(cn string, names ...string) TLSConfigFetcher {
+	return func(ctx context.Context) (*tls.Config, error) {
+		options := certificates.CreateCertificateOptions{
+			CommonName: cn,
+			Hosts:      append([]string{cn}, names...),
+			ValidFrom:  time.Now(),
+			ValidFor:   time.Hour * 24 * 365 * 10,
+			IsCA:       false,
+			ECDSACurve: "P256",
+		}
+
+		cert, priv, err := certificates.CreateCertificate(options, nil)
+		if err != nil {
+			return nil, err
+		}
+
+		var result *tls.Config
+		c, err := tls.X509KeyPair([]byte(cert), []byte(priv))
+		if err != nil {
+			return nil, errors.WithStack(err)
+		}
+		result = &tls.Config{
+			Certificates: []tls.Certificate{c},
+		}
+		return result, nil
+	}
+}
+
+func NewSecretTLSConfig(client generic.GetInterface[*core.Secret], name string) TLSConfigFetcher {
+	return func(ctx context.Context) (*tls.Config, error) {
+		nctx, cancel := globals.GetGlobals().Timeouts().Kubernetes().WithTimeout(ctx)
+		defer cancel()
+
+		s, err := client.Get(nctx, name, meta.GetOptions{})
+		if err != nil {
+			return nil, err
+		}
+		certBytes, found := s.Data[core.TLSCertKey]
+		if !found {
+			return nil, errors.Errorf("No %s found in secret %s", core.TLSCertKey, name)
+		}
+		keyBytes, found := s.Data[core.TLSPrivateKeyKey]
+		if !found {
+			return nil, errors.Errorf("No %s found in secret %s", core.TLSPrivateKeyKey, name)
+		}
+
+		var result *tls.Config
+		c, err := tls.X509KeyPair(certBytes, keyBytes)
+		if err != nil {
+			return nil, errors.WithStack(err)
+		}
+		result = &tls.Config{
+			Certificates: []tls.Certificate{c},
+		}
+		return result, nil
+	}
+}
+
+func NewKeyfileTLSConfig(keyfile string) TLSConfigFetcher {
+	return func(ctx context.Context) (*tls.Config, error) {
+		certificate, err := certificates.LoadKeyFile(keyfile)
+		if err != nil {
+			return nil, err
+		}
+
+		return &tls.Config{
+			Certificates: []tls.Certificate{certificate},
+		}, nil
+	}
+}

pkg/webhook/admission.go

@@ -0,0 +1,329 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package webhook
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	goHttp "net/http"
+	"reflect"
+	"time"
+
+	"github.com/pkg/errors"
+	admission "k8s.io/api/admission/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/arangodb/kube-arangodb/pkg/logging"
+	"github.com/arangodb/kube-arangodb/pkg/util"
+	"github.com/arangodb/kube-arangodb/pkg/util/http"
+	"github.com/arangodb/kube-arangodb/pkg/util/shutdown"
+)
+
+func NewAdmissionHandler[T meta.Object](name, group, version, kind, resource string, handlers ...Handler[T]) Admission {
+	return admissionImpl[T]{
+		name:     name,
+		group:    group,
+		version:  version,
+		kind:     kind,
+		resource: resource,
+		handlers: handlers,
+	}
+}
+
+type AdmissionRequestType int
+
+const (
+	AdmissionRequestValidate AdmissionRequestType = iota
+	AdmissionRequestMutate
+)
+
+type Admissions []Admission
+
+func (a Admissions) Register() util.Mod[goHttp.ServeMux] {
+	return func(in *goHttp.ServeMux) {
+		for _, handler := range a {
+			log := logger.Str("name", handler.Name())
+
+			log.Info("Registering handler")
+
+			if endpoint := fmt.Sprintf("/webhook/%s/%s/validate", gvsAsPath(handler.Resource()), handler.Name()); endpoint != "" {
+				log.Str("endpoint", endpoint).Info("Registered Validate handler")
+				in.HandleFunc(endpoint, handler.Validate)
+			}
+
+			if endpoint := fmt.Sprintf("/webhook/%s/%s/mutate", gvsAsPath(handler.Resource()), handler.Name()); endpoint != "" {
+				log.Str("endpoint", endpoint).Info("Registered Mutate handler")
+				in.HandleFunc(endpoint, handler.Mutate)
+			}
+		}
+	}
+}
+
+func gvsAsPath(in meta.GroupVersionResource) string {
+	if in.Group == "" {
+		return fmt.Sprintf("core/%s/%s", in.Version, in.Resource)
+	}
+	return fmt.Sprintf("%s/%s/%s", in.Group, in.Version, in.Resource)
+}
+
+type Admission interface {
+	Name() string
+
+	Kind() meta.GroupVersionKind
+	Resource() meta.GroupVersionResource
+
+	Validate(goHttp.ResponseWriter, *goHttp.Request)
+	Mutate(goHttp.ResponseWriter, *goHttp.Request)
+}
+
+type admissionImpl[T meta.Object] struct {
+	name, group, version, kind, resource string
+
+	handlers []Handler[T]
+}
+
+func (a admissionImpl[T]) Name() string {
+	return a.name
+}
+
+func (a admissionImpl[T]) Kind() meta.GroupVersionKind {
+	return meta.GroupVersionKind{
+		Group:   a.group,
+		Version: a.version,
+		Kind:    a.kind,
+	}
+}
+
+func (a admissionImpl[T]) Resource() meta.GroupVersionResource {
+	return meta.GroupVersionResource{
+		Group:    a.group,
+		Version:  a.version,
+		Resource: a.resource,
+	}
+}
+
+func (a admissionImpl[T]) Validate(writer goHttp.ResponseWriter, request *goHttp.Request) {
+	a.request(AdmissionRequestValidate, writer, request)
+}
+
+func (a admissionImpl[T]) Mutate(writer goHttp.ResponseWriter, request *goHttp.Request) {
+	a.request(AdmissionRequestMutate, writer, request)
+}
+
+func (a admissionImpl[T]) request(t AdmissionRequestType, writer goHttp.ResponseWriter, request *goHttp.Request) {
+	log := logger.Wrap(logging.HTTPRequestWrap(request))
+
+	log.Info("Request Received")
+
+	timeout := time.Second
+
+	if request.URL.Query().Has("timeout") {
+		if v, err := time.ParseDuration(request.URL.Query().Get("timeout")); err == nil {
+			if v > 500*time.Millisecond {
+				timeout = v - 200*time.Millisecond
+			} else {
+				timeout = v
+			}
+		}
+	}
+
+	ctx, c := context.WithTimeout(shutdown.Context(), timeout)
+	defer c()
+
+	code, data := a.requestWriterJSON(ctx, log, t, request)
+	writer.WriteHeader(code)
+	if len(data) > 0 {
+		if _, err := util.WriteAll(writer, data); err != nil {
+			log.Err(err).Warn("Unable to send response")
+		}
+	}
+}
+
+func (a admissionImpl[T]) requestWriterJSON(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *goHttp.Request) (int, []byte) {
+	code, obj, err := a.requestWriter(ctx, log, t, request)
+
+	if err != nil {
+		if herr, ok := http.IsError(err); ok {
+			return herr.Code, herr.JSON()
+		}
+
+		log.Err(err).Warn("Unexpected Error")
+		return goHttp.StatusInternalServerError, nil
+	}
+
+	if reflect.ValueOf(obj).IsZero() {
+		return code, nil
+	}
+
+	data, err := json.Marshal(obj)
+	if err != nil {
+		log.Err(err).Warn("Unable to marshal response")
+		return goHttp.StatusInternalServerError, nil
+	}
+
+	return code, data
+}
+
+func (a admissionImpl[T]) requestWriter(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *goHttp.Request) (int, any, error) {
+	switch t {
+	case AdmissionRequestValidate, AdmissionRequestMutate:
+	default:
+		log.Warn("Invalid AdmissionRequestType")
+		return 0, nil, http.NewError(goHttp.StatusBadRequest, "Invalid AdmissionRequestType")
+	}
+
+	if request.Method != goHttp.MethodPost {
+		return 0, nil, http.NewError(goHttp.StatusMethodNotAllowed, "Method '%s' not allowed, expected '%s'", request.Method, goHttp.MethodPost)
+	}
+
+	var req admission.AdmissionReview
+
+	if err := json.NewDecoder(request.Body).Decode(&req); err != nil {
+		return 0, nil, http.WrapError(goHttp.StatusBadRequest, err)
+	}
+
+	resp := a.admissionHandle(ctx, log, t, req.Request)
+
+	return 200, admission.AdmissionReview{
+		TypeMeta: req.TypeMeta,
+		Response: resp,
+	}, nil
+}
+
+func (a admissionImpl[T]) admissionHandle(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest) *admission.AdmissionResponse {
+	if request == nil {
+		return &admission.AdmissionResponse{
+			Allowed: false,
+		}
+	}
+
+	if request.Kind != a.Kind() {
+		return &admission.AdmissionResponse{
+			UID:     request.UID,
+			Allowed: false,
+			Result: &meta.Status{
+				Message: fmt.Sprintf("Invalid Kind. Got '%s', expected '%s'", request.Kind.String(), a.Kind().String()),
+			},
+		}
+	}
+
+	resp, err := a.admissionHandleE(ctx, log, t, request)
+	if err != nil {
+		return &admission.AdmissionResponse{
+			UID:     request.UID,
+			Allowed: false,
+			Result: &meta.Status{
+				Message: fmt.Sprintf("Unexpected error: %s", err.Error()),
+			},
+		}
+	}
+
+	if resp == nil {
+		return &admission.AdmissionResponse{
+			UID:     request.UID,
+			Allowed: false,
+			Result: &meta.Status{
+				Message: "Missing Response element",
+			},
+		}
+	}
+
+	resp.UID = request.UID
+
+	return resp
+}
+
+func (a admissionImpl[T]) admissionHandleE(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest) (*admission.AdmissionResponse, error) {
+	old, err := a.evaluateObject(request.OldObject.Raw)
+	if err != nil {
+		return nil, errors.Wrapf(err, "Unable to parse old object")
+	}
+
+	new, err := a.evaluateObject(request.Object.Raw)
+	if err != nil {
+		return nil, errors.Wrapf(err, "Unable to parse new object")
+	}
+
+	switch t {
+	case AdmissionRequestValidate:
+		for _, handler := range a.handlers {
+			if handler.CanHandle(ctx, log, t, request, old, new) {
+				if v, ok := handler.(ValidationHandler[T]); ok {
+					result, err := v.Validate(ctx, log, t, request, old, new)
+					if err != nil {
+						return nil, err
+					}
+
+					return result.AsResponse()
+				}
+
+				return ValidationResponse{
+					Allowed: false,
+					Message: "Request not handled",
+				}.AsResponse()
+			}
+		}
+
+		return &admission.AdmissionResponse{Allowed: true}, nil
+	case AdmissionRequestMutate:
+		for _, handler := range a.handlers {
+			if handler.CanHandle(ctx, log, t, request, old, new) {
+				if v, ok := handler.(MutationHandler[T]); ok {
+					result, err := v.Mutate(ctx, log, t, request, old, new)
+					if err != nil {
+						return nil, err
+					}
+
+					return result.AsResponse()
+				}
+
+				return ValidationResponse{
+					Allowed: false,
+					Message: "Request not handled",
+				}.AsResponse()
+			}
+		}
+
+		return &admission.AdmissionResponse{Allowed: true}, nil
+	default:
+		return &admission.AdmissionResponse{
+			Allowed: false,
+		}, nil
+	}
+}
+
+func (a admissionImpl[T]) evaluateObject(data []byte) (T, error) {
+	if len(data) == 0 {
+		return util.Default[T](), nil
+	}
+
+	obj, err := util.DeepType[T]()
+	if err != nil {
+		return util.Default[T](), err
+	}
+
+	if err := json.Unmarshal(data, &obj); err != nil {
+		return util.Default[T](), err
+	}
+
+	return obj, nil
+}

pkg/webhook/handler.go

@@ -0,0 +1,52 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package webhook
+
+import (
+	"context"
+
+	admission "k8s.io/api/admission/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/arangodb/kube-arangodb/pkg/logging"
+)
+
+type CanHandleFunc[T meta.Object] func(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new T) bool
+
+type MutateFunc[T meta.Object] func(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new T) (MutationResponse, error)
+
+type ValidateFunc[T meta.Object] func(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new T) (ValidationResponse, error)
+
+type Handler[T meta.Object] interface {
+	CanHandle(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new T) bool
+}
+
+type MutationHandler[T meta.Object] interface {
+	Handler[T]
+
+	Mutate(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new T) (MutationResponse, error)
+}
+
+type ValidationHandler[T meta.Object] interface {
+	Handler[T]
+
+	Validate(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new T) (ValidationResponse, error)
+}

pkg/webhook/logger.go

@@ -0,0 +1,25 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package webhook
+
+import "github.com/arangodb/kube-arangodb/pkg/logging"
+
+var logger = logging.Global().RegisterAndGetLogger("webhook", logging.Info)

pkg/webhook/responses.go

@@ -0,0 +1,89 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package webhook
+
+import (
+	"encoding/json"
+	"fmt"
+
+	admission "k8s.io/api/admission/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/arangodb/kube-arangodb/pkg/deployment/patch"
+	"github.com/arangodb/kube-arangodb/pkg/util"
+)
+
+func NewValidationResponse(allowed bool, msg string, args ...any) ValidationResponse {
+	return ValidationResponse{
+		Allowed: allowed,
+		Message: fmt.Sprintf(msg, args...),
+	}
+}
+
+type ValidationResponse struct {
+	Allowed  bool
+	Message  string
+	Warnings []string
+}
+
+func (v ValidationResponse) AsResponse() (*admission.AdmissionResponse, error) {
+	if v.Allowed {
+		return &admission.AdmissionResponse{
+			Allowed:  true,
+			Warnings: v.Warnings,
+		}, nil
+	}
+
+	return &admission.AdmissionResponse{
+		Allowed:  false,
+		Warnings: v.Warnings,
+		Result: &meta.Status{
+			Message: v.Message,
+		},
+	}, nil
+}
+
+type MutationResponse struct {
+	ValidationResponse
+
+	Patch patch.Items
+}
+
+func (v MutationResponse) AsResponse() (*admission.AdmissionResponse, error) {
+	resp, err := v.ValidationResponse.AsResponse()
+	if err != nil {
+		return nil, err
+	}
+
+	if len(v.Patch) == 0 {
+		return resp, nil
+	}
+
+	q, err := json.Marshal(v.Patch)
+	if err != nil {
+		return nil, err
+	}
+
+	resp.Patch = q
+	resp.PatchType = util.NewType(admission.PatchTypeJSONPatch)
+
+	return resp, nil
+}

pkg/webhook/suite_pod_test.go

@@ -0,0 +1,111 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package webhook
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	admission "k8s.io/api/admission/v1"
+	core "k8s.io/api/core/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/arangodb/kube-arangodb/pkg/logging"
+)
+
+func newPodAdmissionRequest(t *testing.T, name, namespace string, op admission.Operation, old, new *core.Pod) *admission.AdmissionRequest {
+	req := &admission.AdmissionRequest{
+		UID: "",
+		Kind: meta.GroupVersionKind{
+			Group:   "",
+			Version: "v1",
+			Kind:    "Pod",
+		},
+		Resource: meta.GroupVersionResource{
+			Group:    "",
+			Version:  "v1",
+			Resource: "pods",
+		},
+		Name:      name,
+		Namespace: namespace,
+		Operation: op,
+	}
+
+	if old != nil {
+		data, err := json.Marshal(old)
+		require.NoError(t, err)
+		req.OldObject.Raw = data
+	}
+
+	if new != nil {
+		data, err := json.Marshal(new)
+		require.NoError(t, err)
+		req.Object.Raw = data
+	}
+
+	return req
+}
+
+func newPodAdmission(name string, handlers ...Handler[*core.Pod]) Admission {
+	return NewAdmissionHandler[*core.Pod](name, "", "v1", "Pod", "pods", handlers...)
+}
+
+func newPodHandler(can CanHandleFunc[*core.Pod],
+	mutate MutateFunc[*core.Pod],
+	validate ValidateFunc[*core.Pod]) Handler[*core.Pod] {
+	return podHandler{
+		can:      can,
+		mutate:   mutate,
+		validate: validate,
+	}
+}
+
+type podHandler struct {
+	can      CanHandleFunc[*core.Pod]
+	mutate   MutateFunc[*core.Pod]
+	validate ValidateFunc[*core.Pod]
+}
+
+func (p podHandler) Validate(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) (ValidationResponse, error) {
+	if p.validate == nil {
+		return ValidationResponse{}, nil
+	}
+
+	return p.validate(ctx, log, t, request, old, new)
+}
+
+func (p podHandler) Mutate(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) (MutationResponse, error) {
+	if p.mutate == nil {
+		return MutationResponse{}, nil
+	}
+
+	return p.mutate(ctx, log, t, request, old, new)
+}
+
+func (p podHandler) CanHandle(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) bool {
+	if p.can == nil {
+		return false
+	}
+
+	return p.can(ctx, log, t, request, old, new)
+}

pkg/webhook/suite_test.go

@@ -0,0 +1,129 @@
+//
+// DISCLAIMER
+//
+// Copyright 2024 ArangoDB GmbH, Cologne, Germany
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package webhook
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	goHttp "net/http"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	admission "k8s.io/api/admission/v1"
+	core "k8s.io/api/core/v1"
+	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/uuid"
+
+	"github.com/arangodb/kube-arangodb/pkg/logging"
+	"github.com/arangodb/kube-arangodb/pkg/util"
+	"github.com/arangodb/kube-arangodb/pkg/util/http"
+	"github.com/arangodb/kube-arangodb/pkg/util/tests"
+)
+
+func Test(t *testing.T) {
+	ctx, c := context.WithCancel(context.Background())
+	defer c()
+
+	addr := startHTTPServer(t, ctx, newPodAdmission("test", newPodHandler(func(ctx context.Context, log logging.Logger, t AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) bool {
+		return true
+	}, nil, func(ctx context.Context, log logging.Logger, at AdmissionRequestType, request *admission.AdmissionRequest, old, new *core.Pod) (ValidationResponse, error) {
+		require.Nil(t, old)
+		require.NotNil(t, new)
+
+		require.EqualValues(t, AdmissionRequestValidate, at)
+
+		return ValidationResponse{
+			Allowed: true,
+		}, nil
+	})))
+
+	resp := requestPod(t, addr, "test", AdmissionRequestValidate,
+		newPodAdmissionRequest(t, "test", tests.FakeNamespace, admission.Create, nil, &core.Pod{
+			ObjectMeta: meta.ObjectMeta{
+				Name:      "test",
+				Namespace: tests.FakeNamespace,
+			},
+		}),
+	)
+	require.NotNil(t, resp)
+	require.True(t, resp.Allowed)
+}
+
+func requestPod(t *testing.T, addr string, name string, mode AdmissionRequestType, req *admission.AdmissionRequest) *admission.AdmissionResponse {
+	return request(t, addr, meta.GroupVersionResource{
+		Group:    "",
+		Version:  "v1",
+		Resource: "pods",
+	}, name, mode, req)
+}
+
+func request(t *testing.T, addr string, gvs meta.GroupVersionResource, name string, mode AdmissionRequestType, request *admission.AdmissionRequest) *admission.AdmissionResponse {
+	if request == nil {
+		request = &admission.AdmissionRequest{}
+	}
+
+	request.UID = uuid.NewUUID()
+
+	data, err := json.Marshal(admission.AdmissionReview{
+		Request: request,
+	})
+	require.NoError(t, err)
+
+	var c = goHttp.Client{
+		Transport: &goHttp.Transport{
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: true,
+			},
+		},
+	}
+
+	url := fmt.Sprintf("https://%s/webhook/%s/%s/%s", addr, gvsAsPath(gvs), name, util.BoolSwitch(mode == AdmissionRequestValidate, "validate", "mutate"))
+
+	t.Logf("Request send to: %s", url)
+
+	resp, err := c.Post(url, "application/json", bytes.NewReader(data))
+	require.NoError(t, err)
+
+	require.EqualValues(t, 200, resp.StatusCode)
+
+	var rv admission.AdmissionReview
+
+	require.NoError(t, json.NewDecoder(resp.Body).Decode(&rv))
+	require.NoError(t, resp.Body.Close())
+
+	require.NotNil(t, rv.Response)
+	require.EqualValues(t, request.UID, rv.Response.UID)
+
+	return rv.Response
+}
+
+func startHTTPServer(t *testing.T, ctx context.Context, admissions ...Admission) string {
+	return tests.NewHTTPServer(ctx, t,
+		http.DefaultHTTPServerSettings,
+		http.WithTLSConfigFetcher(util.NewSelfSignedTLSConfig("localhost", "127.0.0.1")),
+		http.WithServeMux(
+			Admissions(admissions).Register(),
+		),
+	)
+}