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80 lines
2.9 KiB
Go
80 lines
2.9 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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// 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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