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/
persistent_volume.go
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/
persistent_volume.go
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// Copyright 2019 Cruise LLC
//
// 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://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 resource
import (
"context"
admissionv1 "k8s.io/api/admission/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// PersistentVolumeResource contains the information needed for processing by a Policy
type PersistentVolumeResource struct {
PersistentVolume corev1.PersistentVolume
ResourceName string
ResourceKind string
}
// GetPersistentVolumeResource extracts and PersistentVolumeResource from an AdmissionRequest
func GetPersistentVolumeResource(ctx context.Context, ar *admissionv1.AdmissionRequest) *PersistentVolumeResource {
c := GetResourceCache(ctx)
return c.getOrSet(cacheKeyPersistentVolume, func() interface{} {
return decodePersistentVolumeResource(ar)
}).(*PersistentVolumeResource)
}
func decodePersistentVolumeResource(ar *admissionv1.AdmissionRequest) *PersistentVolumeResource {
switch ar.Kind {
case metav1.GroupVersionKind{Group: "", Version: "v1", Kind: "PersistentVolume"}:
pv := corev1.PersistentVolume{}
if err := decodeObject(ar.Object.Raw, &pv); err != nil {
return nil
}
return &PersistentVolumeResource{
PersistentVolume: pv,
ResourceName: GetResourceName(pv.ObjectMeta),
ResourceKind: "PersistentVolume",
}
default:
return nil
}
}