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storage.go
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storage.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 Tencent. All Rights Reserved.
*
* 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
*
* https://opensource.org/licenses/Apache-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 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"
metainternal "k8s.io/apimachinery/pkg/apis/meta/internalversion"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
genericregistry "k8s.io/apiserver/pkg/registry/generic"
"k8s.io/apiserver/pkg/registry/generic/registry"
"k8s.io/apiserver/pkg/registry/rest"
notifyinternalclient "tkestack.io/tke/api/client/clientset/internalversion/typed/notify/internalversion"
"tkestack.io/tke/api/notify"
apiserverutil "tkestack.io/tke/pkg/apiserver/util"
templatestrategy "tkestack.io/tke/pkg/notify/registry/template"
"tkestack.io/tke/pkg/notify/util"
"tkestack.io/tke/pkg/util/log"
)
// Storage includes storage for templates and all sub resources.
type Storage struct {
Template *REST
}
// NewStorage returns a Storage object that will work against templates.
func NewStorage(optsGetter genericregistry.RESTOptionsGetter, notifyClient *notifyinternalclient.NotifyClient, privilegedUsername string) *Storage {
strategy := templatestrategy.NewStrategy(notifyClient)
store := ®istry.Store{
NewFunc: func() runtime.Object { return ¬ify.Template{} },
NewListFunc: func() runtime.Object { return ¬ify.TemplateList{} },
DefaultQualifiedResource: notify.Resource("templates"),
PredicateFunc: templatestrategy.MatchTemplate,
ReturnDeletedObject: true,
CreateStrategy: strategy,
UpdateStrategy: strategy,
DeleteStrategy: strategy,
}
store.TableConvertor = rest.NewDefaultTableConvertor(store.DefaultQualifiedResource)
options := &genericregistry.StoreOptions{
RESTOptions: optsGetter,
AttrFunc: templatestrategy.GetAttrs,
}
if err := store.CompleteWithOptions(options); err != nil {
log.Panic("Failed to create template etcd rest storage", log.Err(err))
}
return &Storage{
Template: &REST{store, privilegedUsername},
}
}
// ValidateGetObjectAndTenantID validate name and tenantID, if success return Template
func ValidateGetObjectAndTenantID(ctx context.Context, store *registry.Store, name string, options *metav1.GetOptions) (runtime.Object, error) {
obj, err := store.Get(ctx, name, options)
if err != nil {
return nil, err
}
template := obj.(*notify.Template)
if err := util.FilterTemplate(ctx, template); err != nil {
return nil, err
}
return template, nil
}
// REST implements a RESTStorage for templates against etcd.
type REST struct {
*registry.Store
privilegedUsername string
}
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{"tpl"}
}
// List selects resources in the storage which match to the selector. 'options' can be nil.
func (r *REST) List(ctx context.Context, options *metainternal.ListOptions) (runtime.Object, error) {
wrappedOptions := apiserverutil.PredicateListOptions(ctx, options)
return r.Store.List(ctx, wrappedOptions)
}
// DeleteCollection selects all resources in the storage matching given 'listOptions'
// and deletes them.
func (r *REST) DeleteCollection(ctx context.Context, deleteValidation rest.ValidateObjectFunc, options *metav1.DeleteOptions, listOptions *metainternal.ListOptions) (runtime.Object, error) {
return r.Store.DeleteCollection(ctx, deleteValidation, options, listOptions)
}
// Get finds a resource in the storage by name and returns it.
func (r *REST) Get(ctx context.Context, receiverName string, options *metav1.GetOptions) (runtime.Object, error) {
return ValidateGetObjectAndTenantID(ctx, r.Store, receiverName, options)
}
// Update finds a resource in the storage and updates it.
func (r *REST) Update(ctx context.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc, forceAllowCreate bool, options *metav1.UpdateOptions) (runtime.Object, bool, error) {
// We are explicitly setting forceAllowCreate to false in the call to the underlying storage because
// subresources should never allow create on update.
_, err := ValidateGetObjectAndTenantID(ctx, r.Store, name, &metav1.GetOptions{})
if err != nil {
return nil, false, err
}
return r.Store.Update(ctx, name, objInfo, createValidation, updateValidation, false, options)
}
// Delete enforces life-cycle rules for cluster termination
func (r *REST) Delete(ctx context.Context, name string, deleteValidation rest.ValidateObjectFunc, options *metav1.DeleteOptions) (runtime.Object, bool, error) {
_, err := ValidateGetObjectAndTenantID(ctx, r.Store, name, &metav1.GetOptions{})
if err != nil {
return nil, false, err
}
return r.Store.Delete(ctx, name, deleteValidation, options)
}