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123 lines
4.5 KiB
Go
123 lines
4.5 KiB
Go
/*
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Copyright 2014 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 ingress
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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/runtime/schema"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/apiserver/pkg/endpoints/request"
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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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// ingressStrategy implements verification logic for Replication Ingress.
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type ingressStrategy 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 Replication Ingress objects.
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var Strategy = ingressStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped returns true because all Ingress' need to be within a namespace.
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func (ingressStrategy) NamespaceScoped() bool {
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return true
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}
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// PrepareForCreate clears the status of an Ingress before creation.
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func (ingressStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
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ingress := obj.(*networking.Ingress)
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// create cannot set status
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ingress.Status = networking.IngressStatus{}
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ingress.Generation = 1
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}
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// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
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func (ingressStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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newIngress := obj.(*networking.Ingress)
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oldIngress := old.(*networking.Ingress)
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// Update is not allowed to set status
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newIngress.Status = oldIngress.Status
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// Any changes to the spec increment the generation number, any changes to the
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// status should reflect the generation number of the corresponding object.
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// See metav1.ObjectMeta description for more information on Generation.
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if !apiequality.Semantic.DeepEqual(oldIngress.Spec, newIngress.Spec) {
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newIngress.Generation = oldIngress.Generation + 1
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}
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}
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// Validate validates ingresses on create.
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func (ingressStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
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var requestGV schema.GroupVersion
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if requestInfo, ok := request.RequestInfoFrom(ctx); ok {
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requestGV = schema.GroupVersion{Group: requestInfo.APIGroup, Version: requestInfo.APIVersion}
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}
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ingress := obj.(*networking.Ingress)
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return validation.ValidateIngressCreate(ingress, requestGV)
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}
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// Canonicalize normalizes the object after validation.
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func (ingressStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for Ingress; this means POST is needed to create one.
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func (ingressStrategy) AllowCreateOnUpdate() bool {
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return false
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}
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// ValidateUpdate validates ingresses on update.
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func (ingressStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
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var requestGV schema.GroupVersion
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if requestInfo, ok := request.RequestInfoFrom(ctx); ok {
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requestGV = schema.GroupVersion{Group: requestInfo.APIGroup, Version: requestInfo.APIVersion}
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}
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return validation.ValidateIngressUpdate(obj.(*networking.Ingress), old.(*networking.Ingress), requestGV)
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}
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// AllowUnconditionalUpdate is the default update policy for Ingress objects.
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func (ingressStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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type ingressStatusStrategy struct {
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ingressStrategy
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}
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// StatusStrategy implements logic used to validate and prepare for updates of the status subresource
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var StatusStrategy = ingressStatusStrategy{Strategy}
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// PrepareForUpdate clears fields that are not allowed to be set by end users on update of status
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func (ingressStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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newIngress := obj.(*networking.Ingress)
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oldIngress := old.(*networking.Ingress)
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// status changes are not allowed to update spec
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newIngress.Spec = oldIngress.Spec
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}
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// ValidateUpdate is the default update validation for an end user updating status
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func (ingressStatusStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
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return validation.ValidateIngressStatusUpdate(obj.(*networking.Ingress), old.(*networking.Ingress))
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}
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