106 lines
3.6 KiB
Go
106 lines
3.6 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ingressclass
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import (
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"context"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/apiserver/pkg/storage/names"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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"k8s.io/kubernetes/pkg/apis/networking"
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"k8s.io/kubernetes/pkg/apis/networking/validation"
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)
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// ingressClassStrategy implements verification logic for IngressClass
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// resources.
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type ingressClassStrategy struct {
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runtime.ObjectTyper
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names.NameGenerator
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}
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// Strategy is the default logic that applies when creating and updating
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// IngressClass objects.
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var Strategy = ingressClassStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped returns false because IngressClass is a non-namespaced
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// resource.
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func (ingressClassStrategy) NamespaceScoped() bool {
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return false
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}
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// PrepareForCreate prepares an IngressClass for creation.
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func (ingressClassStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
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ingressClass := obj.(*networking.IngressClass)
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ingressClass.Generation = 1
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}
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// PrepareForUpdate clears fields that are not allowed to be set by end users on
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// update.
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func (ingressClassStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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newIngressClass := obj.(*networking.IngressClass)
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oldIngressClass := old.(*networking.IngressClass)
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// Any changes to the spec increment the generation number.
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// See metav1.ObjectMeta description for more information on Generation.
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if !apiequality.Semantic.DeepEqual(oldIngressClass.Spec, newIngressClass.Spec) {
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newIngressClass.Generation = oldIngressClass.Generation + 1
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}
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}
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// Validate validates a new IngressClass.
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func (ingressClassStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
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ingressClass := obj.(*networking.IngressClass)
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return validation.ValidateIngressClass(ingressClass)
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}
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// WarningsOnCreate returns warnings for the creation of the given object.
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func (ingressClassStrategy) WarningsOnCreate(ctx context.Context, obj runtime.Object) []string {
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return nil
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}
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// Canonicalize normalizes the object after validation.
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func (ingressClassStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for IngressClass; this means POST is needed to
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// create one.
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func (ingressClassStrategy) AllowCreateOnUpdate() bool {
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return false
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}
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// ValidateUpdate is the default update validation for an end user.
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func (ingressClassStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
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newIngressClass := obj.(*networking.IngressClass)
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oldIngressClass := old.(*networking.IngressClass)
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return validation.ValidateIngressClassUpdate(newIngressClass, oldIngressClass)
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}
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// WarningsOnUpdate returns warnings for the given update.
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func (ingressClassStrategy) WarningsOnUpdate(ctx context.Context, obj, old runtime.Object) []string {
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return nil
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}
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// AllowUnconditionalUpdate is the default update policy for IngressClass
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// objects.
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func (ingressClassStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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