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fluxconfig_webhook.go
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fluxconfig_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"
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 fluxconfiglog = logf.Log.WithName("fluxconfig-resource")
func (r *FluxConfig) SetupWebhookWithManager(mgr ctrl.Manager) error {
return ctrl.NewWebhookManagedBy(mgr).
For(r).
Complete()
}
// Change verbs to "verbs=create;update;delete" if you want to enable deletion validation.
//+kubebuilder:webhook:path=/validate-anywhere-eks-amazonaws-com-v1alpha1-fluxconfig,mutating=false,failurePolicy=fail,sideEffects=None,groups=anywhere.eks.amazonaws.com,resources=fluxconfigs,verbs=create;update,versions=v1alpha1,name=validation.fluxconfig.anywhere.amazonaws.com,admissionReviewVersions={v1,v1beta1}
var _ webhook.Validator = &FluxConfig{}
// ValidateCreate implements webhook.Validator so a webhook will be registered for the type.
func (r *FluxConfig) ValidateCreate() error {
fluxconfiglog.Info("validate create", "name", r.Name)
if err := r.Validate(); err != nil {
return apierrors.NewInvalid(
r.GroupVersionKind().GroupKind(),
r.Name,
field.ErrorList{field.Invalid(field.NewPath("spec"), r.Spec, err.Error())})
}
return nil
}
// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type.
func (r *FluxConfig) ValidateUpdate(old runtime.Object) error {
fluxconfiglog.Info("validate update", "name", r.Name)
oldFluxConfig, ok := old.(*FluxConfig)
if !ok {
return apierrors.NewBadRequest(fmt.Sprintf("expected a FluxConfig but got a %T", old))
}
var allErrs field.ErrorList
allErrs = append(allErrs, validateImmutableFluxFields(r, oldFluxConfig)...)
if err := r.Validate(); err != nil {
allErrs = append(allErrs, field.Invalid(field.NewPath("spec"), r.Spec, err.Error()))
}
if len(allErrs) == 0 {
return nil
}
return apierrors.NewInvalid(GroupVersion.WithKind(FluxConfigKind).GroupKind(), r.Name, allErrs)
}
// ValidateDelete implements webhook.Validator so a webhook will be registered for the type.
func (r *FluxConfig) ValidateDelete() error {
fluxconfiglog.Info("validate delete", "name", r.Name)
return nil
}
func validateImmutableFluxFields(new, old *FluxConfig) field.ErrorList {
var allErrs field.ErrorList
if !new.Spec.Equal(&old.Spec) {
allErrs = append(
allErrs,
field.Forbidden(field.NewPath(FluxConfigKind), "config is immutable"),
)
}
return allErrs
}