114 lines
4.3 KiB
Go
114 lines
4.3 KiB
Go
/*
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Copyright 2022 The Karmada 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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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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"sigs.k8s.io/structured-merge-diff/v4/fieldpath"
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searchapis "github.com/karmada-io/karmada/pkg/apis/search"
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searchregistry "github.com/karmada-io/karmada/pkg/registry/search"
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)
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// ResourceRegistryStorage includes storage for ResourceRegistry and for all the subresources.
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type ResourceRegistryStorage struct {
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ResourceRegistry *REST
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Status *StatusREST
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}
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// NewResourceRegistryStorage returns a ResourceRegistryStorage object that will work against resourceRegistries.
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func NewResourceRegistryStorage(scheme *runtime.Scheme, optsGetter generic.RESTOptionsGetter) (*ResourceRegistryStorage, error) {
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strategy := searchregistry.NewStrategy(scheme)
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store := &genericregistry.Store{
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NewFunc: func() runtime.Object { return &searchapis.ResourceRegistry{} },
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NewListFunc: func() runtime.Object { return &searchapis.ResourceRegistryList{} },
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PredicateFunc: searchregistry.MatchResourceRegistry,
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DefaultQualifiedResource: searchapis.Resource("resourceRegistries"),
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// NOTE: singular name of the resource must be all lowercase.
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SingularQualifiedResource: searchapis.Resource("resourceregistry"),
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CreateStrategy: strategy,
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UpdateStrategy: strategy,
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DeleteStrategy: strategy,
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ResetFieldsStrategy: strategy,
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// TODO: define table converter that exposes more than name/creation timestamp
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TableConvertor: rest.NewDefaultTableConvertor(searchapis.Resource("resourceRegistries")),
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}
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options := &generic.StoreOptions{RESTOptions: optsGetter, AttrFunc: searchregistry.GetAttrs}
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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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statusStrategy := searchregistry.NewStatusStrategy(strategy)
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statusStore := *store
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statusStore.UpdateStrategy = statusStrategy
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statusStore.ResetFieldsStrategy = statusStrategy
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resourceRegistryRest := &REST{store}
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return &ResourceRegistryStorage{
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ResourceRegistry: resourceRegistryRest,
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Status: &StatusREST{&statusStore},
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}, nil
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}
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// REST implements a RESTStorage for ResourceRegistry.
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type REST struct {
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*genericregistry.Store
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}
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// StatusREST implements the REST endpoint for changing the status of a ResourceRegistry.
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type StatusREST struct {
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store *genericregistry.Store
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}
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// New returns empty ResourceRegistry.
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func (r *StatusREST) New() runtime.Object {
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return &searchapis.ResourceRegistry{}
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}
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// Get retrieves the object from the storage. It is required to support Patch.
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func (r *StatusREST) Get(ctx context.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
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return r.store.Get(ctx, name, options)
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}
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// Update alters the status subset of an object.
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func (r *StatusREST) Update(ctx context.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc, _ bool, options *metav1.UpdateOptions) (runtime.Object, bool, error) {
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// We are explicitly setting forceAllowCreate to false in the call to the underlying storage because
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// subresources should never allow create on update.
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return r.store.Update(ctx, name, objInfo, createValidation, updateValidation, false, options)
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}
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// GetResetFields implements rest.ResetFieldsStrategy
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func (r *StatusREST) GetResetFields() map[fieldpath.APIVersion]*fieldpath.Set {
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return r.store.GetResetFields()
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}
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// Destroy cleans up its resources on shutdown.
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func (r *StatusREST) Destroy() {
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// Given that underlying 'store' is shared with REST,
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// we don't have anything else need to be destroyed.
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}
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