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strategy.go
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strategy.go
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/*
Copyright 2014 The Kubernetes Authors 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 podtemplate
import (
"fmt"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/validation"
"k8s.io/kubernetes/pkg/fields"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/registry/generic"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/validation/field"
)
// podTemplateStrategy implements behavior for PodTemplates
type podTemplateStrategy struct {
runtime.ObjectTyper
api.NameGenerator
}
// Strategy is the default logic that applies when creating and updating PodTemplate
// objects via the REST API.
var Strategy = podTemplateStrategy{api.Scheme, api.SimpleNameGenerator}
// NamespaceScoped is true for pod templates.
func (podTemplateStrategy) NamespaceScoped() bool {
return true
}
// PrepareForCreate clears fields that are not allowed to be set by end users on creation.
func (podTemplateStrategy) PrepareForCreate(obj runtime.Object) {
_ = obj.(*api.PodTemplate)
}
// Validate validates a new pod template.
func (podTemplateStrategy) Validate(ctx api.Context, obj runtime.Object) field.ErrorList {
pod := obj.(*api.PodTemplate)
return validation.ValidatePodTemplate(pod)
}
// Canonicalize normalizes the object after validation.
func (podTemplateStrategy) Canonicalize(obj runtime.Object) {
}
// AllowCreateOnUpdate is false for pod templates.
func (podTemplateStrategy) AllowCreateOnUpdate() bool {
return false
}
// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
func (podTemplateStrategy) PrepareForUpdate(obj, old runtime.Object) {
_ = obj.(*api.PodTemplate)
}
// ValidateUpdate is the default update validation for an end user.
func (podTemplateStrategy) ValidateUpdate(ctx api.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidatePodTemplateUpdate(obj.(*api.PodTemplate), old.(*api.PodTemplate))
}
func (podTemplateStrategy) AllowUnconditionalUpdate() bool {
return true
}
func (podTemplateStrategy) Export(obj runtime.Object, exact bool) error {
// Do nothing
return nil
}
func PodTemplateToSelectableFields(podTemplate *api.PodTemplate) fields.Set {
return fields.Set{}
}
func MatchPodTemplate(label labels.Selector, field fields.Selector) generic.Matcher {
return &generic.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
pt, ok := obj.(*api.PodTemplate)
if !ok {
return nil, nil, fmt.Errorf("given object is not a pod template.")
}
return labels.Set(pt.ObjectMeta.Labels), PodTemplateToSelectableFields(pt), nil
},
}
}