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99 lines
3.4 KiB
99 lines
3.4 KiB
/*
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Copyright 2019 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 endpointslice
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import (
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"context"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/apiserver/pkg/storage/names"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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"k8s.io/kubernetes/pkg/apis/discovery"
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"k8s.io/kubernetes/pkg/apis/discovery/validation"
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)
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// endpointSliceStrategy implements verification logic for Replication.
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type endpointSliceStrategy 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 Replication EndpointSlice objects.
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var Strategy = endpointSliceStrategy{legacyscheme.Scheme, names.SimpleNameGenerator}
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// NamespaceScoped returns true because all EndpointSlices need to be within a namespace.
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func (endpointSliceStrategy) NamespaceScoped() bool {
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return true
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}
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// PrepareForCreate clears the status of an EndpointSlice before creation.
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func (endpointSliceStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
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endpointSlice := obj.(*discovery.EndpointSlice)
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endpointSlice.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 (endpointSliceStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
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newEPS := obj.(*discovery.EndpointSlice)
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oldEPS := old.(*discovery.EndpointSlice)
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// Increment generation if anything other than meta changed
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// This needs to be changed if a status attribute is added to EndpointSlice
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ogNewMeta := newEPS.ObjectMeta
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ogOldMeta := oldEPS.ObjectMeta
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newEPS.ObjectMeta = v1.ObjectMeta{}
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oldEPS.ObjectMeta = v1.ObjectMeta{}
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if !apiequality.Semantic.DeepEqual(newEPS, oldEPS) {
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ogNewMeta.Generation = ogOldMeta.Generation + 1
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}
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newEPS.ObjectMeta = ogNewMeta
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oldEPS.ObjectMeta = ogOldMeta
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}
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// Validate validates a new EndpointSlice.
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func (endpointSliceStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
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endpointSlice := obj.(*discovery.EndpointSlice)
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err := validation.ValidateEndpointSliceCreate(endpointSlice)
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return err
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}
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// Canonicalize normalizes the object after validation.
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func (endpointSliceStrategy) Canonicalize(obj runtime.Object) {
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}
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// AllowCreateOnUpdate is false for EndpointSlice; this means POST is needed to create one.
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func (endpointSliceStrategy) 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 (endpointSliceStrategy) ValidateUpdate(ctx context.Context, new, old runtime.Object) field.ErrorList {
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newEPS := new.(*discovery.EndpointSlice)
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oldEPS := old.(*discovery.EndpointSlice)
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return validation.ValidateEndpointSliceUpdate(newEPS, oldEPS)
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}
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// AllowUnconditionalUpdate is the default update policy for EndpointSlice objects.
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func (endpointSliceStrategy) AllowUnconditionalUpdate() bool {
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return true
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}
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