| /* |
| Copyright 2014 The Kubernetes Authors. |
| |
| 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 poddisruptionbudget |
| |
| import ( |
| "context" |
| |
| apiequality "k8s.io/apimachinery/pkg/api/equality" |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/apimachinery/pkg/util/validation/field" |
| "k8s.io/apiserver/pkg/storage/names" |
| "k8s.io/kubernetes/pkg/api/legacyscheme" |
| "k8s.io/kubernetes/pkg/apis/policy" |
| "k8s.io/kubernetes/pkg/apis/policy/validation" |
| ) |
| |
| // podDisruptionBudgetStrategy implements verification logic for PodDisruptionBudgets. |
| type podDisruptionBudgetStrategy struct { |
| runtime.ObjectTyper |
| names.NameGenerator |
| } |
| |
| // Strategy is the default logic that applies when creating and updating PodDisruptionBudget objects. |
| var Strategy = podDisruptionBudgetStrategy{legacyscheme.Scheme, names.SimpleNameGenerator} |
| |
| // NamespaceScoped returns true because all PodDisruptionBudget' need to be within a namespace. |
| func (podDisruptionBudgetStrategy) NamespaceScoped() bool { |
| return true |
| } |
| |
| // PrepareForCreate clears the status of an PodDisruptionBudget before creation. |
| func (podDisruptionBudgetStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) { |
| podDisruptionBudget := obj.(*policy.PodDisruptionBudget) |
| // create cannot set status |
| podDisruptionBudget.Status = policy.PodDisruptionBudgetStatus{} |
| |
| podDisruptionBudget.Generation = 1 |
| } |
| |
| // PrepareForUpdate clears fields that are not allowed to be set by end users on update. |
| func (podDisruptionBudgetStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) { |
| newPodDisruptionBudget := obj.(*policy.PodDisruptionBudget) |
| oldPodDisruptionBudget := old.(*policy.PodDisruptionBudget) |
| // Update is not allowed to set status |
| newPodDisruptionBudget.Status = oldPodDisruptionBudget.Status |
| |
| // Any changes to the spec increment the generation number, any changes to the |
| // status should reflect the generation number of the corresponding object. |
| // See metav1.ObjectMeta description for more information on Generation. |
| if !apiequality.Semantic.DeepEqual(oldPodDisruptionBudget.Spec, newPodDisruptionBudget.Spec) { |
| newPodDisruptionBudget.Generation = oldPodDisruptionBudget.Generation + 1 |
| } |
| } |
| |
| // Validate validates a new PodDisruptionBudget. |
| func (podDisruptionBudgetStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList { |
| podDisruptionBudget := obj.(*policy.PodDisruptionBudget) |
| return validation.ValidatePodDisruptionBudget(podDisruptionBudget) |
| } |
| |
| // Canonicalize normalizes the object after validation. |
| func (podDisruptionBudgetStrategy) Canonicalize(obj runtime.Object) { |
| } |
| |
| // AllowCreateOnUpdate is true for PodDisruptionBudget; this means you may create one with a PUT request. |
| func (podDisruptionBudgetStrategy) AllowCreateOnUpdate() bool { |
| return false |
| } |
| |
| // ValidateUpdate is the default update validation for an end user. |
| func (podDisruptionBudgetStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList { |
| validationErrorList := validation.ValidatePodDisruptionBudget(obj.(*policy.PodDisruptionBudget)) |
| updateErrorList := validation.ValidatePodDisruptionBudgetUpdate(obj.(*policy.PodDisruptionBudget), old.(*policy.PodDisruptionBudget)) |
| return append(validationErrorList, updateErrorList...) |
| } |
| |
| // AllowUnconditionalUpdate is the default update policy for PodDisruptionBudget objects. Status update should |
| // only be allowed if version match. |
| func (podDisruptionBudgetStrategy) AllowUnconditionalUpdate() bool { |
| return false |
| } |
| |
| type podDisruptionBudgetStatusStrategy struct { |
| podDisruptionBudgetStrategy |
| } |
| |
| var StatusStrategy = podDisruptionBudgetStatusStrategy{Strategy} |
| |
| // PrepareForUpdate clears fields that are not allowed to be set by end users on update of status |
| func (podDisruptionBudgetStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) { |
| newPodDisruptionBudget := obj.(*policy.PodDisruptionBudget) |
| oldPodDisruptionBudget := old.(*policy.PodDisruptionBudget) |
| // status changes are not allowed to update spec |
| newPodDisruptionBudget.Spec = oldPodDisruptionBudget.Spec |
| } |
| |
| // ValidateUpdate is the default update validation for an end user updating status |
| func (podDisruptionBudgetStatusStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList { |
| // TODO: Validate status updates. |
| return field.ErrorList{} |
| // return validation.ValidatePodDisruptionBudgetStatusUpdate(obj.(*policy.PodDisruptionBudget), old.(*policy.PodDisruptionBudget)) |
| } |