/
strategy.go
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/
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 plant
import (
"context"
"github.com/gardener/gardener/pkg/api"
"github.com/gardener/gardener/pkg/apis/core"
"github.com/gardener/gardener/pkg/apis/core/validation"
apiequality "k8s.io/apimachinery/pkg/api/equality"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/validation/field"
"k8s.io/apiserver/pkg/storage/names"
)
type plantStrategy struct {
runtime.ObjectTyper
names.NameGenerator
}
// Strategy defines the storage strategy for plants.
var Strategy = plantStrategy{api.Scheme, names.SimpleNameGenerator}
func (plantStrategy) NamespaceScoped() bool {
return true
}
func (plantStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
plant := obj.(*core.Plant)
plant.Generation = 1
plant.Status = core.PlantStatus{}
}
func (plantStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
newplant := obj.(*core.Plant)
oldplant := old.(*core.Plant)
newplant.Status = oldplant.Status
if mustIncreaseGeneration(oldplant, newplant) {
newplant.Generation = oldplant.Generation + 1
}
}
func mustIncreaseGeneration(oldplant, newplant *core.Plant) bool {
// The plant specification changes.
if !apiequality.Semantic.DeepEqual(oldplant.Spec, newplant.Spec) {
return true
}
// The deletion timestamp was set.
if oldplant.DeletionTimestamp == nil && newplant.DeletionTimestamp != nil {
return true
}
return false
}
func (plantStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
plant := obj.(*core.Plant)
return validation.ValidatePlant(plant)
}
func (plantStrategy) Canonicalize(obj runtime.Object) {
}
func (plantStrategy) AllowCreateOnUpdate() bool {
return false
}
func (plantStrategy) ValidateUpdate(ctx context.Context, newObj, oldObj runtime.Object) field.ErrorList {
newplant := newObj.(*core.Plant)
oldplant := oldObj.(*core.Plant)
return validation.ValidatePlantUpdate(newplant, oldplant)
}
func (plantStrategy) AllowUnconditionalUpdate() bool {
return false
}
// WarningsOnCreate returns warnings to the client performing a create.
func (plantStrategy) WarningsOnCreate(ctx context.Context, obj runtime.Object) []string {
return nil
}
// WarningsOnUpdate returns warnings to the client performing the update.
func (plantStrategy) WarningsOnUpdate(ctx context.Context, obj, old runtime.Object) []string {
return nil
}
type plantStatusStrategy struct {
plantStrategy
}
// StatusStrategy defines the storage strategy for the status subresource of plants.
var StatusStrategy = plantStatusStrategy{Strategy}
func (plantStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
newplant := obj.(*core.Plant)
oldplant := old.(*core.Plant)
newplant.Spec = oldplant.Spec
}
func (plantStatusStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidatePlantStatusUpdate(obj.(*core.Plant).Status, old.(*core.Plant).Status)
}