a8c930ef46
The feature gate gets locked to "true", with the goal to remove it in two releases. All code now can assume that the feature is enabled. Tests for "feature disabled" are no longer needed and get removed. Some code wasn't using the new helper functions yet. That gets changed while touching those lines.
70 lines
2.2 KiB
Go
70 lines
2.2 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package common
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import (
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"fmt"
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v1 "k8s.io/api/core/v1"
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"k8s.io/client-go/tools/cache"
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"k8s.io/component-helpers/storage/ephemeral"
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)
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const (
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// PodPVCIndex is the lookup name for the index function, which is to index by pod pvcs.
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PodPVCIndex = "pod-pvc-index"
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)
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// PodPVCIndexFunc creates an index function that returns PVC keys (=
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// namespace/name) for given pod. This includes the PVCs
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// that might be created for generic ephemeral volumes.
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func PodPVCIndexFunc() func(obj interface{}) ([]string, error) {
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return func(obj interface{}) ([]string, error) {
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pod, ok := obj.(*v1.Pod)
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if !ok {
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return []string{}, nil
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}
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keys := []string{}
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for _, podVolume := range pod.Spec.Volumes {
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claimName := ""
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if pvcSource := podVolume.VolumeSource.PersistentVolumeClaim; pvcSource != nil {
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claimName = pvcSource.ClaimName
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} else if podVolume.VolumeSource.Ephemeral != nil {
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claimName = ephemeral.VolumeClaimName(pod, &podVolume)
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}
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if claimName != "" {
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keys = append(keys, fmt.Sprintf("%s/%s", pod.Namespace, claimName))
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}
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}
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return keys, nil
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}
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}
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// AddPodPVCIndexerIfNotPresent adds the PodPVCIndexFunc.
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func AddPodPVCIndexerIfNotPresent(indexer cache.Indexer) error {
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return AddIndexerIfNotPresent(indexer, PodPVCIndex, PodPVCIndexFunc())
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}
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// AddIndexerIfNotPresent adds the index function with the name into the cache indexer if not present
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func AddIndexerIfNotPresent(indexer cache.Indexer, indexName string, indexFunc cache.IndexFunc) error {
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indexers := indexer.GetIndexers()
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if _, ok := indexers[indexName]; ok {
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return nil
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}
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return indexer.AddIndexers(cache.Indexers{indexName: indexFunc})
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}
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