mirror of https://github.com/k3s-io/k3s
126 lines
4.4 KiB
Go
126 lines
4.4 KiB
Go
/*
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Copyright 2015 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 horizontalpodautoscaler
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/validation/field"
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genericapirequest "k8s.io/apiserver/pkg/request"
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"k8s.io/apiserver/pkg/storage/names"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/apis/autoscaling"
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"k8s.io/kubernetes/pkg/apis/autoscaling/validation"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/storage"
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)
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// autoscalerStrategy implements behavior for HorizontalPodAutoscalers
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type autoscalerStrategy 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 HorizontalPodAutoscaler
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// objects via the REST API.
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var Strategy = autoscalerStrategy{api.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped is true for autoscaler.
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func (autoscalerStrategy) 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 (autoscalerStrategy) PrepareForCreate(ctx genericapirequest.Context, obj runtime.Object) {
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newHPA := obj.(*autoscaling.HorizontalPodAutoscaler)
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// create cannot set status
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newHPA.Status = autoscaling.HorizontalPodAutoscalerStatus{}
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}
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// Validate validates a new autoscaler.
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func (autoscalerStrategy) Validate(ctx genericapirequest.Context, obj runtime.Object) field.ErrorList {
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autoscaler := obj.(*autoscaling.HorizontalPodAutoscaler)
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return validation.ValidateHorizontalPodAutoscaler(autoscaler)
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}
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// Canonicalize normalizes the object after validation.
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func (autoscalerStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for autoscalers.
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func (autoscalerStrategy) 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 (autoscalerStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
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newHPA := obj.(*autoscaling.HorizontalPodAutoscaler)
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oldHPA := old.(*autoscaling.HorizontalPodAutoscaler)
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// Update is not allowed to set status
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newHPA.Status = oldHPA.Status
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}
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// ValidateUpdate is the default update validation for an end user.
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func (autoscalerStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
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return validation.ValidateHorizontalPodAutoscalerUpdate(obj.(*autoscaling.HorizontalPodAutoscaler), old.(*autoscaling.HorizontalPodAutoscaler))
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}
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func (autoscalerStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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func AutoscalerToSelectableFields(hpa *autoscaling.HorizontalPodAutoscaler) fields.Set {
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return nil
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}
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// GetAttrs returns labels and fields of a given object for filtering purposes.
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func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {
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hpa, ok := obj.(*autoscaling.HorizontalPodAutoscaler)
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if !ok {
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return nil, nil, fmt.Errorf("given object is not a horizontal pod autoscaler.")
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}
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return labels.Set(hpa.ObjectMeta.Labels), AutoscalerToSelectableFields(hpa), nil
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}
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func MatchAutoscaler(label labels.Selector, field fields.Selector) storage.SelectionPredicate {
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return storage.SelectionPredicate{
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Label: label,
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Field: field,
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GetAttrs: GetAttrs,
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}
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}
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type autoscalerStatusStrategy struct {
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autoscalerStrategy
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}
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var StatusStrategy = autoscalerStatusStrategy{Strategy}
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func (autoscalerStatusStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
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newAutoscaler := obj.(*autoscaling.HorizontalPodAutoscaler)
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oldAutoscaler := old.(*autoscaling.HorizontalPodAutoscaler)
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// status changes are not allowed to update spec
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newAutoscaler.Spec = oldAutoscaler.Spec
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}
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func (autoscalerStatusStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
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return validation.ValidateHorizontalPodAutoscalerStatusUpdate(obj.(*autoscaling.HorizontalPodAutoscaler), old.(*autoscaling.HorizontalPodAutoscaler))
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}
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