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113 lines
4.0 KiB
Go
113 lines
4.0 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 podpreset
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/fields"
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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/endpoints/request"
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"k8s.io/apiserver/pkg/registry/generic"
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apistorage "k8s.io/apiserver/pkg/storage"
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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/settings"
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"k8s.io/kubernetes/pkg/apis/settings/validation"
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)
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// podPresetStrategy implements verification logic for Pod Presets.
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type podPresetStrategy 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 Pod Preset objects.
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var Strategy = podPresetStrategy{api.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped returns true because all Pod Presets need to be within a namespace.
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func (podPresetStrategy) NamespaceScoped() bool {
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return true
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}
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// PrepareForCreate clears the status of a Pod Preset before creation.
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func (podPresetStrategy) PrepareForCreate(ctx genericapirequest.Context, obj runtime.Object) {
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pip := obj.(*settings.PodPreset)
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pip.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 (podPresetStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
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newPodPreset := obj.(*settings.PodPreset)
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oldPodPreset := old.(*settings.PodPreset)
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// Update is not allowed
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newPodPreset.Spec = oldPodPreset.Spec
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}
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// Validate validates a new PodPreset.
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func (podPresetStrategy) Validate(ctx genericapirequest.Context, obj runtime.Object) field.ErrorList {
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pip := obj.(*settings.PodPreset)
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return validation.ValidatePodPreset(pip)
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}
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// Canonicalize normalizes the object after validation.
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func (podPresetStrategy) Canonicalize(obj runtime.Object) {}
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// AllowCreateOnUpdate is false for PodPreset; this means POST is needed to create one.
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func (podPresetStrategy) 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 (podPresetStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
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validationErrorList := validation.ValidatePodPreset(obj.(*settings.PodPreset))
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updateErrorList := validation.ValidatePodPresetUpdate(obj.(*settings.PodPreset), old.(*settings.PodPreset))
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return append(validationErrorList, updateErrorList...)
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}
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// AllowUnconditionalUpdate is the default update policy for Pod Preset objects.
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func (podPresetStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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// SelectableFields returns a field set that represents the object.
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func SelectableFields(pip *settings.PodPreset) fields.Set {
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return generic.ObjectMetaFieldsSet(&pip.ObjectMeta, true)
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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, bool, error) {
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pip, ok := obj.(*settings.PodPreset)
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if !ok {
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return nil, nil, false, fmt.Errorf("given object is not a PodPreset.")
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}
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return labels.Set(pip.ObjectMeta.Labels), SelectableFields(pip), pip.Initializers != nil, nil
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}
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// Matcher is the filter used by the generic etcd backend to watch events
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// from etcd to clients of the apiserver only interested in specific labels/fields.
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func Matcher(label labels.Selector, field fields.Selector) apistorage.SelectionPredicate {
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return apistorage.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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