139 lines
4.8 KiB
Go
139 lines
4.8 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 petset
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import (
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"fmt"
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"reflect"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/apis/apps"
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"k8s.io/kubernetes/pkg/apis/apps/validation"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/util/validation/field"
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)
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// petSetStrategy implements verification logic for Replication PetSets.
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type petSetStrategy struct {
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runtime.ObjectTyper
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api.NameGenerator
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}
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// Strategy is the default logic that applies when creating and updating Replication PetSet objects.
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var Strategy = petSetStrategy{api.Scheme, api.SimpleNameGenerator}
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// NamespaceScoped returns true because all PetSet' need to be within a namespace.
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func (petSetStrategy) NamespaceScoped() bool {
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return true
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}
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// PrepareForCreate clears the status of an PetSet before creation.
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func (petSetStrategy) PrepareForCreate(ctx api.Context, obj runtime.Object) {
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petSet := obj.(*apps.PetSet)
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// create cannot set status
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petSet.Status = apps.PetSetStatus{}
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petSet.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 (petSetStrategy) PrepareForUpdate(ctx api.Context, obj, old runtime.Object) {
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newPetSet := obj.(*apps.PetSet)
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oldPetSet := old.(*apps.PetSet)
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// Update is not allowed to set status
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newPetSet.Status = oldPetSet.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 api.ObjectMeta description for more information on Generation.
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if !reflect.DeepEqual(oldPetSet.Spec, newPetSet.Spec) {
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newPetSet.Generation = oldPetSet.Generation + 1
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}
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}
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// Validate validates a new PetSet.
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func (petSetStrategy) Validate(ctx api.Context, obj runtime.Object) field.ErrorList {
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petSet := obj.(*apps.PetSet)
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return validation.ValidatePetSet(petSet)
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}
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// Canonicalize normalizes the object after validation.
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func (petSetStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for PetSet; this means POST is needed to create one.
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func (petSetStrategy) 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 (petSetStrategy) ValidateUpdate(ctx api.Context, obj, old runtime.Object) field.ErrorList {
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validationErrorList := validation.ValidatePetSet(obj.(*apps.PetSet))
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updateErrorList := validation.ValidatePetSetUpdate(obj.(*apps.PetSet), old.(*apps.PetSet))
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return append(validationErrorList, updateErrorList...)
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}
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// AllowUnconditionalUpdate is the default update policy for PetSet objects.
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func (petSetStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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// PetSetToSelectableFields returns a field set that represents the object.
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func PetSetToSelectableFields(petSet *apps.PetSet) fields.Set {
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return generic.ObjectMetaFieldsSet(&petSet.ObjectMeta, true)
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}
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// MatchPetSet 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 MatchPetSet(label labels.Selector, field fields.Selector) *generic.SelectionPredicate {
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return &generic.SelectionPredicate{
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Label: label,
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Field: field,
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GetAttrs: func(obj runtime.Object) (labels.Set, fields.Set, error) {
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petSet, ok := obj.(*apps.PetSet)
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if !ok {
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return nil, nil, fmt.Errorf("given object is not an PetSet.")
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}
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return labels.Set(petSet.ObjectMeta.Labels), PetSetToSelectableFields(petSet), nil
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},
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}
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}
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type petSetStatusStrategy struct {
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petSetStrategy
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}
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var StatusStrategy = petSetStatusStrategy{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 (petSetStatusStrategy) PrepareForUpdate(ctx api.Context, obj, old runtime.Object) {
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newPetSet := obj.(*apps.PetSet)
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oldPetSet := old.(*apps.PetSet)
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// status changes are not allowed to update spec
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newPetSet.Spec = oldPetSet.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 (petSetStatusStrategy) ValidateUpdate(ctx api.Context, obj, old runtime.Object) field.ErrorList {
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// TODO: Validate status updates.
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return validation.ValidatePetSetStatusUpdate(obj.(*apps.PetSet), old.(*apps.PetSet))
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}
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