/
storage.go
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/
storage.go
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// Copyright 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 storage
import (
"context"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apiserver/pkg/registry/generic"
genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
"k8s.io/apiserver/pkg/registry/rest"
"k8s.io/apiserver/pkg/storage"
"k8s.io/client-go/tools/cache"
"github.com/gardener/gardener/pkg/apis/core"
"github.com/gardener/gardener/pkg/apiserver/registry/core/backupentry"
)
// REST implements a RESTStorage for backupEntries against etcd
type REST struct {
*genericregistry.Store
}
// BackupEntryStorage implements the storage for BackupEntries and their status subresource.
type BackupEntryStorage struct {
BackupEntry *REST
Status *StatusREST
}
// NewStorage creates a new BackupEntryStorage object.
func NewStorage(optsGetter generic.RESTOptionsGetter) BackupEntryStorage {
backupEntryRest, backupEntryStatusRest := NewREST(optsGetter)
return BackupEntryStorage{
BackupEntry: backupEntryRest,
Status: backupEntryStatusRest,
}
}
// NewREST returns a RESTStorage object that will work against backupEntrys.
func NewREST(optsGetter generic.RESTOptionsGetter) (*REST, *StatusREST) {
var (
store = &genericregistry.Store{
NewFunc: func() runtime.Object { return &core.BackupEntry{} },
NewListFunc: func() runtime.Object { return &core.BackupEntryList{} },
DefaultQualifiedResource: core.Resource("backupentries"),
SingularQualifiedResource: core.Resource("backupentry"),
EnableGarbageCollection: true,
CreateStrategy: backupentry.Strategy,
UpdateStrategy: backupentry.Strategy,
DeleteStrategy: backupentry.Strategy,
TableConvertor: newTableConvertor(),
}
options = &generic.StoreOptions{
RESTOptions: optsGetter,
AttrFunc: backupentry.GetAttrs,
Indexers: &cache.Indexers{
storage.FieldIndex(core.BackupEntrySeedName): backupentry.SeedNameIndexFunc,
storage.FieldIndex(core.BackupEntryBucketName): backupentry.BucketNameIndexFunc,
},
}
)
if err := store.CompleteWithOptions(options); err != nil {
panic(err)
}
statusStore := *store
statusStore.UpdateStrategy = backupentry.StatusStrategy
return &REST{store}, &StatusREST{store: &statusStore}
}
// Implement CategoriesProvider
var _ rest.CategoriesProvider = &REST{}
// Categories implements the CategoriesProvider interface. Returns a list of categories a resource is part of.
func (r *REST) Categories() []string {
return []string{"all"}
}
// StatusREST implements the REST endpoint for changing the status of a BackupEntry.
type StatusREST struct {
store *genericregistry.Store
}
var (
_ rest.Storage = &StatusREST{}
_ rest.Getter = &StatusREST{}
_ rest.Updater = &StatusREST{}
)
// New creates a new (empty) internal BackupEntry object.
func (r *StatusREST) New() runtime.Object {
return &core.BackupEntry{}
}
// Destroy cleans up its resources on shutdown.
func (r *StatusREST) Destroy() {
// Given that underlying store is shared with REST,
// we don't destroy it here explicitly.
}
// Get retrieves the object from the storage. It is required to support Patch.
func (r *StatusREST) Get(ctx context.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
return r.store.Get(ctx, name, options)
}
// Update alters the status subset of an object.
func (r *StatusREST) Update(ctx context.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc, forceAllowCreate bool, options *metav1.UpdateOptions) (runtime.Object, bool, error) {
return r.store.Update(ctx, name, objInfo, createValidation, updateValidation, forceAllowCreate, options)
}
// Implement ShortNamesProvider
var _ rest.ShortNamesProvider = &REST{}
// ShortNames implements the ShortNamesProvider interface. Returns a list of short names for a resource.
func (r *REST) ShortNames() []string {
return []string{"bec"}
}