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cloudstackdatacenterconfig_webhook.go
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cloudstackdatacenterconfig_webhook.go
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// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
//
// 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.
package v1alpha1
import (
"fmt"
"regexp"
"strings"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/validation/field"
ctrl "sigs.k8s.io/controller-runtime"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/webhook"
)
// log is for logging in this package.
var cloudstackdatacenterconfiglog = logf.Log.WithName("cloudstackdatacenterconfig-resource")
func (r *CloudStackDatacenterConfig) SetupWebhookWithManager(mgr ctrl.Manager) error {
return ctrl.NewWebhookManagedBy(mgr).
For(r).
Complete()
}
// EDIT THIS FILE! THIS IS SCAFFOLDING FOR YOU TO OWN!
//+kubebuilder:webhook:path=/mutate-anywhere-eks-amazonaws-com-v1alpha1-cloudstackdatacenterconfig,mutating=true,failurePolicy=fail,sideEffects=None,groups=anywhere.eks.amazonaws.com,resources=cloudstackdatacenterconfigs,verbs=create;update,versions=v1alpha1,name=mutation.cloudstackdatacenterconfig.anywhere.amazonaws.com,admissionReviewVersions={v1,v1beta1}
var _ webhook.Defaulter = &CloudStackDatacenterConfig{}
// Default implements webhook.Defaulter so a webhook will be registered for the type.
func (r *CloudStackDatacenterConfig) Default() {
cloudstackdatacenterconfiglog.Info("Setting up CloudStackDatacenterConfig defaults for", "name", r.Name)
r.SetDefaults()
}
// change verbs to "verbs=create;update;delete" if you want to enable deletion validation.
//+kubebuilder:webhook:path=/validate-anywhere-eks-amazonaws-com-v1alpha1-cloudstackdatacenterconfig,mutating=false,failurePolicy=fail,sideEffects=None,groups=anywhere.eks.amazonaws.com,resources=cloudstackdatacenterconfigs,verbs=create;update,versions=v1alpha1,name=validation.cloudstackdatacenterconfig.anywhere.amazonaws.com,admissionReviewVersions={v1,v1beta1}
var _ webhook.Validator = &CloudStackDatacenterConfig{}
// ValidateCreate implements webhook.Validator so a webhook will be registered for the type.
func (r *CloudStackDatacenterConfig) ValidateCreate() error {
cloudstackdatacenterconfiglog.Info("validate create", "name", r.Name)
if r.IsReconcilePaused() {
cloudstackdatacenterconfiglog.Info("CloudStackDatacenterConfig is paused, so allowing create", "name", r.Name)
return nil
}
return nil
}
// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type.
func (r *CloudStackDatacenterConfig) ValidateUpdate(old runtime.Object) error {
cloudstackdatacenterconfiglog.Info("validate update", "name", r.Name)
oldDatacenterConfig, ok := old.(*CloudStackDatacenterConfig)
if !ok {
return apierrors.NewBadRequest(fmt.Sprintf("expected a CloudStackDataCenterConfig but got a %T", old))
}
if oldDatacenterConfig.IsReconcilePaused() {
cloudstackdatacenterconfiglog.Info("Reconciliation is paused")
return nil
}
var allErrs field.ErrorList
allErrs = append(allErrs, validateImmutableFieldsCloudStackCluster(r, oldDatacenterConfig)...)
if len(allErrs) == 0 {
return nil
}
return apierrors.NewInvalid(GroupVersion.WithKind(CloudStackDatacenterKind).GroupKind(), r.Name, allErrs)
}
func isValidAzConversionName(uuid string) bool {
r := regexp.MustCompile("^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-4[a-fA-F0-9]{3}-[8|9|aA|bB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}")
return r.MatchString(uuid)
}
func isCapcV1beta1ToV1beta2Upgrade(new, old *CloudStackDatacenterConfigSpec) bool {
if len(new.AvailabilityZones) != len(old.AvailabilityZones) {
return false
}
for _, az := range old.AvailabilityZones {
if !strings.HasPrefix(az.Name, DefaultCloudStackAZPrefix) {
return false
}
}
for _, az := range new.AvailabilityZones {
if !isValidAzConversionName(az.Name) {
return false
}
}
return true
}
func validateImmutableFieldsCloudStackCluster(new, old *CloudStackDatacenterConfig) field.ErrorList {
var allErrs field.ErrorList
specPath := field.NewPath("spec")
// Check for CAPC v1beta1 -> CAPC v1beta2 upgrade
if isCapcV1beta1ToV1beta2Upgrade(&new.Spec, &old.Spec) {
return allErrs
}
newAzMap := make(map[string]CloudStackAvailabilityZone)
for _, az := range new.Spec.AvailabilityZones {
newAzMap[az.Name] = az
}
atLeastOneAzOverlap := false
for _, oldAz := range old.Spec.AvailabilityZones {
if newAz, ok := newAzMap[oldAz.Name]; ok {
atLeastOneAzOverlap = true
if !newAz.Equal(&oldAz) {
allErrs = append(
allErrs,
field.Forbidden(specPath.Child("availabilityZone", oldAz.Name), "availabilityZone is immutable"),
)
}
}
}
if !atLeastOneAzOverlap {
allErrs = append(
allErrs,
field.Invalid(field.NewPath("spec", "availabilityZone"), new.Spec.AvailabilityZones, "at least one AvailabilityZone must be shared between new and old CloudStackDatacenterConfig specs"),
)
}
return allErrs
}
// ValidateDelete implements webhook.Validator so a webhook will be registered for the type.
func (r *CloudStackDatacenterConfig) ValidateDelete() error {
cloudstackdatacenterconfiglog.Info("validate delete", "name", r.Name)
// TODO(user): fill in your validation logic upon object deletion.
return nil
}