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0990ba1cc9
This introduces `singularNameProvider`. This provider will be used by core types to have their singular names are defined in discovery endpoint. Thanks to that, core resources singular name always have higher precedence than CRDs shortcuts or singular names.
87 lines
3.1 KiB
Go
87 lines
3.1 KiB
Go
/*
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Copyright 2017 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 storage
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import (
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"context"
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"errors"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apiserver/pkg/registry/generic"
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genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
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"k8s.io/apiserver/pkg/registry/rest"
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"k8s.io/kubernetes/pkg/apis/scheduling"
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schedulingapiv1 "k8s.io/kubernetes/pkg/apis/scheduling/v1"
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"k8s.io/kubernetes/pkg/printers"
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printersinternal "k8s.io/kubernetes/pkg/printers/internalversion"
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printerstorage "k8s.io/kubernetes/pkg/printers/storage"
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"k8s.io/kubernetes/pkg/registry/scheduling/priorityclass"
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)
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// REST implements a RESTStorage for priority classes against etcd
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type REST struct {
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*genericregistry.Store
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}
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// NewREST returns a RESTStorage object that will work against priority classes.
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func NewREST(optsGetter generic.RESTOptionsGetter) (*REST, error) {
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store := &genericregistry.Store{
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NewFunc: func() runtime.Object { return &scheduling.PriorityClass{} },
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NewListFunc: func() runtime.Object { return &scheduling.PriorityClassList{} },
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DefaultQualifiedResource: scheduling.Resource("priorityclasses"),
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CreateStrategy: priorityclass.Strategy,
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UpdateStrategy: priorityclass.Strategy,
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DeleteStrategy: priorityclass.Strategy,
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TableConvertor: printerstorage.TableConvertor{TableGenerator: printers.NewTableGenerator().With(printersinternal.AddHandlers)},
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}
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options := &generic.StoreOptions{RESTOptions: optsGetter}
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if err := store.CompleteWithOptions(options); err != nil {
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return nil, err
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}
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return &REST{store}, nil
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}
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// Implement ShortNamesProvider
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var _ rest.ShortNamesProvider = &REST{}
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// ShortNames implements the ShortNamesProvider interface. Returns a list of short names for a resource.
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func (r *REST) ShortNames() []string {
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return []string{"pc"}
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}
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var _ rest.SingularNameProvider = &REST{}
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// SingularName implements the SingularNameProvider interfaces. This returns singular name of core resource.
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func (r *REST) SingularName() string {
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return "priorityclass"
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}
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// Delete ensures that system priority classes are not deleted.
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func (r *REST) Delete(ctx context.Context, name string, deleteValidation rest.ValidateObjectFunc, options *metav1.DeleteOptions) (runtime.Object, bool, error) {
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for _, spc := range schedulingapiv1.SystemPriorityClasses() {
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if name == spc.Name {
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return nil, false, apierrors.NewForbidden(scheduling.Resource("priorityclasses"), spc.Name, errors.New("this is a system priority class and cannot be deleted"))
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}
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}
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return r.Store.Delete(ctx, name, deleteValidation, options)
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}
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