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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 seed
import (
"context"
"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"
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"
)
type seedStrategy struct {
runtime.ObjectTyper
names.NameGenerator
}
// Strategy defines the storage strategy for Seeds.
var Strategy = seedStrategy{api.Scheme, names.SimpleNameGenerator}
func (seedStrategy) NamespaceScoped() bool {
return false
}
func (seedStrategy) PrepareForCreate(ctx context.Context, obj runtime.Object) {
seed := obj.(*garden.Seed)
seed.Generation = 1
seed.Status = garden.SeedStatus{}
finalizers := sets.NewString(seed.Finalizers...)
if !finalizers.Has(gardenv1beta1.GardenerName) {
finalizers.Insert(gardenv1beta1.GardenerName)
}
seed.Finalizers = finalizers.UnsortedList()
}
func (seedStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
newSeed := obj.(*garden.Seed)
oldSeed := old.(*garden.Seed)
newSeed.Status = oldSeed.Status
if !apiequality.Semantic.DeepEqual(oldSeed.Spec, newSeed.Spec) {
newSeed.Generation = oldSeed.Generation + 1
}
}
func (seedStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
seed := obj.(*garden.Seed)
return validation.ValidateSeed(seed)
}
func (seedStrategy) Canonicalize(obj runtime.Object) {
}
func (seedStrategy) AllowCreateOnUpdate() bool {
return false
}
func (seedStrategy) AllowUnconditionalUpdate() bool {
return true
}
func (seedStrategy) ValidateUpdate(ctx context.Context, newObj, oldObj runtime.Object) field.ErrorList {
oldSeed, newSeed := oldObj.(*garden.Seed), newObj.(*garden.Seed)
return validation.ValidateSeedUpdate(newSeed, oldSeed)
}
type seedStatusStrategy struct {
seedStrategy
}
// StatusStrategy defines the storage strategy for the status subresource of Seeds.
var StatusStrategy = seedStatusStrategy{Strategy}
func (seedStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
newSeed := obj.(*garden.Seed)
oldSeed := old.(*garden.Seed)
newSeed.Spec = oldSeed.Spec
}
func (seedStatusStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidateSeedStatusUpdate(obj.(*garden.Seed), old.(*garden.Seed))
}