mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 08:20:23 +00:00
106 lines
2.9 KiB
Go
106 lines
2.9 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
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 utils
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
"time"
|
|
|
|
"k8s.io/api/core/v1"
|
|
apierrs "k8s.io/apimachinery/pkg/api/errors"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
clientset "k8s.io/client-go/kubernetes"
|
|
"k8s.io/klog"
|
|
)
|
|
|
|
const (
|
|
retries = 5
|
|
)
|
|
|
|
func AddLabelsToNode(c clientset.Interface, nodeName string, labels map[string]string) error {
|
|
tokens := make([]string, 0, len(labels))
|
|
for k, v := range labels {
|
|
tokens = append(tokens, "\""+k+"\":\""+v+"\"")
|
|
}
|
|
labelString := "{" + strings.Join(tokens, ",") + "}"
|
|
patch := fmt.Sprintf(`{"metadata":{"labels":%v}}`, labelString)
|
|
var err error
|
|
for attempt := 0; attempt < retries; attempt++ {
|
|
_, err = c.CoreV1().Nodes().Patch(nodeName, types.MergePatchType, []byte(patch))
|
|
if err != nil {
|
|
if !apierrs.IsConflict(err) {
|
|
return err
|
|
}
|
|
} else {
|
|
break
|
|
}
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// RemoveLabelOffNode is for cleaning up labels temporarily added to node,
|
|
// won't fail if target label doesn't exist or has been removed.
|
|
func RemoveLabelOffNode(c clientset.Interface, nodeName string, labelKeys []string) error {
|
|
var node *v1.Node
|
|
var err error
|
|
for attempt := 0; attempt < retries; attempt++ {
|
|
node, err = c.CoreV1().Nodes().Get(nodeName, metav1.GetOptions{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if node.Labels == nil {
|
|
return nil
|
|
}
|
|
for _, labelKey := range labelKeys {
|
|
if node.Labels == nil || len(node.Labels[labelKey]) == 0 {
|
|
break
|
|
}
|
|
delete(node.Labels, labelKey)
|
|
}
|
|
_, err = c.CoreV1().Nodes().Update(node)
|
|
if err != nil {
|
|
if !apierrs.IsConflict(err) {
|
|
return err
|
|
} else {
|
|
klog.V(2).Infof("Conflict when trying to remove a labels %v from %v", labelKeys, nodeName)
|
|
}
|
|
} else {
|
|
break
|
|
}
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// VerifyLabelsRemoved checks if Node for given nodeName does not have any of labels from labelKeys.
|
|
// Return non-nil error if it does.
|
|
func VerifyLabelsRemoved(c clientset.Interface, nodeName string, labelKeys []string) error {
|
|
node, err := c.CoreV1().Nodes().Get(nodeName, metav1.GetOptions{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, labelKey := range labelKeys {
|
|
if node.Labels != nil && len(node.Labels[labelKey]) != 0 {
|
|
return fmt.Errorf("Failed removing label " + labelKey + " of the node " + nodeName)
|
|
}
|
|
}
|
|
return nil
|
|
}
|