forked from gardener/gardener
/
strategy.go
130 lines (105 loc) · 4.24 KB
/
strategy.go
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// Copyright (c) 2018 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 shoot
import (
apiequality "k8s.io/apimachinery/pkg/api/equality"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/validation/field"
"k8s.io/apiserver/pkg/storage/names"
"github.com/gardener/gardener/pkg/api"
"github.com/gardener/gardener/pkg/apis/garden"
gardenv1beta1 "github.com/gardener/gardener/pkg/apis/garden/v1beta1"
"github.com/gardener/gardener/pkg/apis/garden/validation"
"github.com/gardener/gardener/pkg/operation/common"
genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
)
type shootStrategy struct {
runtime.ObjectTyper
names.NameGenerator
}
// Strategy defines the storage strategy for Shoots.
var Strategy = shootStrategy{api.Scheme, names.SimpleNameGenerator}
func (shootStrategy) NamespaceScoped() bool {
return true
}
func (shootStrategy) PrepareForCreate(ctx genericapirequest.Context, obj runtime.Object) {
shoot := obj.(*garden.Shoot)
shoot.Generation = 1
shoot.Status = garden.ShootStatus{}
finalizers := sets.NewString(shoot.Finalizers...)
if !finalizers.Has(gardenv1beta1.GardenerName) {
finalizers.Insert(gardenv1beta1.GardenerName)
}
shoot.Finalizers = finalizers.UnsortedList()
}
func (shootStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
newShoot := obj.(*garden.Shoot)
oldShoot := old.(*garden.Shoot)
newShoot.Status = oldShoot.Status
if mustIncreaseGeneration(oldShoot, newShoot) {
newShoot.Generation = oldShoot.Generation + 1
}
if newShoot.Annotations != nil {
delete(newShoot.Annotations, common.ShootOperation)
}
}
func mustIncreaseGeneration(oldShoot, newShoot *garden.Shoot) bool {
// The Shoot specification changes.
if !apiequality.Semantic.DeepEqual(oldShoot.Spec, newShoot.Spec) {
return true
}
// The deletion timestamp and the special confirmation annotation was set.
if !common.CheckConfirmationDeletionTimestampValid(oldShoot.ObjectMeta) && common.CheckConfirmationDeletionTimestampValid(newShoot.ObjectMeta) {
return true
}
// The shoot state was failed but the retry annotation was set.
lastOperation := newShoot.Status.LastOperation
if lastOperation != nil && lastOperation.State == garden.ShootLastOperationStateFailed {
if val, ok := newShoot.Annotations[common.ShootOperation]; ok && val == "retry" {
return true
}
}
return false
}
func (shootStrategy) Validate(ctx genericapirequest.Context, obj runtime.Object) field.ErrorList {
shoot := obj.(*garden.Shoot)
return validation.ValidateShoot(shoot)
}
func (shootStrategy) Canonicalize(obj runtime.Object) {
}
func (shootStrategy) AllowCreateOnUpdate() bool {
return false
}
func (shootStrategy) ValidateUpdate(ctx genericapirequest.Context, newObj, oldObj runtime.Object) field.ErrorList {
newShoot := newObj.(*garden.Shoot)
oldShoot := oldObj.(*garden.Shoot)
return validation.ValidateShootUpdate(newShoot, oldShoot)
}
func (shootStrategy) AllowUnconditionalUpdate() bool {
return false
}
type shootStatusStrategy struct {
shootStrategy
}
// StatusStrategy defines the storage strategy for the status subresource of Shoots.
var StatusStrategy = shootStatusStrategy{Strategy}
func (shootStatusStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, old runtime.Object) {
newShoot := obj.(*garden.Shoot)
oldShoot := old.(*garden.Shoot)
newShoot.Spec = oldShoot.Spec
}
func (shootStatusStrategy) ValidateUpdate(ctx genericapirequest.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidateShootStatusUpdate(obj.(*garden.Shoot).Status, old.(*garden.Shoot).Status)
}