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115 lines
4.2 KiB
Go
115 lines
4.2 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 podtemplate
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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/api/pod"
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api "k8s.io/kubernetes/pkg/apis/core"
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corevalidation "k8s.io/kubernetes/pkg/apis/core/validation"
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)
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// podTemplateStrategy implements behavior for PodTemplates
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type podTemplateStrategy 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 PodTemplate
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// objects via the REST API.
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var Strategy = podTemplateStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped is true for pod templates.
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func (podTemplateStrategy) NamespaceScoped() bool {
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return true
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}
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// PrepareForCreate clears fields that are not allowed to be set by end users on creation.
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func (podTemplateStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
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template := obj.(*api.PodTemplate)
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template.Generation = 1
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pod.DropDisabledTemplateFields(&template.Template, nil)
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}
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// Validate validates a new pod template.
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func (podTemplateStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
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template := obj.(*api.PodTemplate)
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opts := pod.GetValidationOptionsFromPodTemplate(&template.Template, nil)
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return corevalidation.ValidatePodTemplate(template, opts)
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}
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// WarningsOnCreate returns warnings for the creation of the given object.
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func (podTemplateStrategy) WarningsOnCreate(ctx context.Context, obj runtime.Object) []string {
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newPodTemplate := obj.(*api.PodTemplate)
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return pod.GetWarningsForPodTemplate(ctx, field.NewPath("template"), &newPodTemplate.Template, nil)
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}
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// Canonicalize normalizes the object after validation.
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func (podTemplateStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for pod templates.
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func (podTemplateStrategy) AllowCreateOnUpdate() bool {
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return false
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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 (podTemplateStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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newTemplate := obj.(*api.PodTemplate)
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oldTemplate := old.(*api.PodTemplate)
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pod.DropDisabledTemplateFields(&newTemplate.Template, &oldTemplate.Template)
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// Any changes to the template 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(newTemplate.Template, oldTemplate.Template) {
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newTemplate.Generation = oldTemplate.Generation + 1
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}
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}
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// ValidateUpdate is the default update validation for an end user.
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func (podTemplateStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
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template := obj.(*api.PodTemplate)
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oldTemplate := old.(*api.PodTemplate)
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// Allow downward api usage of hugepages on pod update if feature is enabled or if the old pod already had used them.
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opts := pod.GetValidationOptionsFromPodTemplate(&template.Template, &oldTemplate.Template)
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return corevalidation.ValidatePodTemplateUpdate(template, oldTemplate, opts)
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}
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// WarningsOnUpdate returns warnings for the given update.
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func (podTemplateStrategy) WarningsOnUpdate(ctx context.Context, obj, old runtime.Object) []string {
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var warnings []string
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newTemplate := obj.(*api.PodTemplate)
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oldTemplate := old.(*api.PodTemplate)
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if newTemplate.Generation != oldTemplate.Generation {
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warnings = pod.GetWarningsForPodTemplate(ctx, field.NewPath("template"), &newTemplate.Template, &oldTemplate.Template)
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}
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return warnings
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}
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func (podTemplateStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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