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shootretriever.go
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/
shootretriever.go
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// Copyright (c) 2020 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 extensions
import (
"fmt"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/client/kubernetes"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
)
// ShootRetriever decodes raw Shoots into objects
type ShootRetriever struct {
runtime.Decoder
}
// NewShootRetriever returns a new shoot retriever.
func NewShootRetriever() *ShootRetriever {
return &ShootRetriever{serializer.NewCodecFactory(kubernetes.GardenScheme).UniversalDecoder()}
}
// FromCluster retrieves the shoot resource from the Cluster resource
func (s *ShootRetriever) FromCluster(cluster *extensionsv1alpha1.Cluster) (*gardencorev1beta1.Shoot, error) {
shoot := &gardencorev1beta1.Shoot{}
if cluster.Spec.Shoot.Raw == nil {
return nil, fmt.Errorf("cluster resource %s doesn't contain shoot resource in raw format", cluster.Name)
}
if _, _, err := s.Decode(cluster.Spec.Shoot.Raw, nil, shoot); err != nil {
return nil, err
}
return shoot, nil
}