mirror of
https://github.com/vmware-tanzu/velero.git
synced 2026-02-09 13:30:14 +00:00
80 lines
2.6 KiB
Go
80 lines
2.6 KiB
Go
/*
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Copyright 2017 the Heptio Ark contributors.
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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 kube
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import (
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"fmt"
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"github.com/pkg/errors"
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corev1api "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
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corev1listers "k8s.io/client-go/listers/core/v1"
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)
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// NamespaceAndName returns a string in the format <namespace>/<name>
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func NamespaceAndName(objMeta metav1.Object) string {
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if objMeta.GetNamespace() == "" {
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return objMeta.GetName()
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}
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return fmt.Sprintf("%s/%s", objMeta.GetNamespace(), objMeta.GetName())
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}
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// EnsureNamespaceExists attempts to create the provided Kubernetes namespace. It returns two values:
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// a bool indicating whether or not the namespace was created, and an error if the create failed
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// for a reason other than that the namespace already exists. Note that in the case where the
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// namespace already exists, this function will return (false, nil).
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func EnsureNamespaceExists(namespace *corev1api.Namespace, client corev1client.NamespaceInterface) (bool, error) {
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if _, err := client.Create(namespace); err == nil {
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return true, nil
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} else if apierrors.IsAlreadyExists(err) {
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return false, nil
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} else {
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return false, errors.Wrapf(err, "error creating namespace %s", namespace.Name)
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}
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}
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// GetVolumeDirectory gets the name of the directory on the host, under /var/lib/kubelet/pods/<podUID>/volumes/,
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// where the specified volume lives.
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func GetVolumeDirectory(pod *corev1api.Pod, volumeName string, pvcLister corev1listers.PersistentVolumeClaimLister) (string, error) {
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var volume *corev1api.Volume
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for _, item := range pod.Spec.Volumes {
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if item.Name == volumeName {
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volume = &item
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break
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}
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}
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if volume == nil {
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return "", errors.New("volume not found in pod")
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}
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if volume.VolumeSource.PersistentVolumeClaim == nil {
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return volume.Name, nil
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}
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pvc, err := pvcLister.PersistentVolumeClaims(pod.Namespace).Get(volume.VolumeSource.PersistentVolumeClaim.ClaimName)
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if err != nil {
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return "", errors.WithStack(err)
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}
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return pvc.Spec.VolumeName, nil
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}
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