mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-21 12:30:24 +00:00
c4f79d455f
As kubernetes 1.24.0 is released, updating kubernetes dependencies to 1.24.0 updates: #3086 Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
122 lines
3.7 KiB
Go
122 lines
3.7 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 resourcelock
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
|
|
"k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
|
|
)
|
|
|
|
type endpointsLock struct {
|
|
// EndpointsMeta should contain a Name and a Namespace of an
|
|
// Endpoints object that the LeaderElector will attempt to lead.
|
|
EndpointsMeta metav1.ObjectMeta
|
|
Client corev1client.EndpointsGetter
|
|
LockConfig ResourceLockConfig
|
|
e *v1.Endpoints
|
|
}
|
|
|
|
// Get returns the election record from a Endpoints Annotation
|
|
func (el *endpointsLock) Get(ctx context.Context) (*LeaderElectionRecord, []byte, error) {
|
|
var record LeaderElectionRecord
|
|
var err error
|
|
el.e, err = el.Client.Endpoints(el.EndpointsMeta.Namespace).Get(ctx, el.EndpointsMeta.Name, metav1.GetOptions{})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if el.e.Annotations == nil {
|
|
el.e.Annotations = make(map[string]string)
|
|
}
|
|
recordStr, found := el.e.Annotations[LeaderElectionRecordAnnotationKey]
|
|
recordBytes := []byte(recordStr)
|
|
if found {
|
|
if err := json.Unmarshal(recordBytes, &record); err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
return &record, recordBytes, nil
|
|
}
|
|
|
|
// Create attempts to create a LeaderElectionRecord annotation
|
|
func (el *endpointsLock) Create(ctx context.Context, ler LeaderElectionRecord) error {
|
|
recordBytes, err := json.Marshal(ler)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
el.e, err = el.Client.Endpoints(el.EndpointsMeta.Namespace).Create(ctx, &v1.Endpoints{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: el.EndpointsMeta.Name,
|
|
Namespace: el.EndpointsMeta.Namespace,
|
|
Annotations: map[string]string{
|
|
LeaderElectionRecordAnnotationKey: string(recordBytes),
|
|
},
|
|
},
|
|
}, metav1.CreateOptions{})
|
|
return err
|
|
}
|
|
|
|
// Update will update and existing annotation on a given resource.
|
|
func (el *endpointsLock) Update(ctx context.Context, ler LeaderElectionRecord) error {
|
|
if el.e == nil {
|
|
return errors.New("endpoint not initialized, call get or create first")
|
|
}
|
|
recordBytes, err := json.Marshal(ler)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if el.e.Annotations == nil {
|
|
el.e.Annotations = make(map[string]string)
|
|
}
|
|
el.e.Annotations[LeaderElectionRecordAnnotationKey] = string(recordBytes)
|
|
e, err := el.Client.Endpoints(el.EndpointsMeta.Namespace).Update(ctx, el.e, metav1.UpdateOptions{})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
el.e = e
|
|
return nil
|
|
}
|
|
|
|
// RecordEvent in leader election while adding meta-data
|
|
func (el *endpointsLock) RecordEvent(s string) {
|
|
if el.LockConfig.EventRecorder == nil {
|
|
return
|
|
}
|
|
events := fmt.Sprintf("%v %v", el.LockConfig.Identity, s)
|
|
subject := &v1.Endpoints{ObjectMeta: el.e.ObjectMeta}
|
|
// Populate the type meta, so we don't have to get it from the schema
|
|
subject.Kind = "Endpoints"
|
|
subject.APIVersion = v1.SchemeGroupVersion.String()
|
|
el.LockConfig.EventRecorder.Eventf(subject, v1.EventTypeNormal, "LeaderElection", events)
|
|
}
|
|
|
|
// Describe is used to convert details on current resource lock
|
|
// into a string
|
|
func (el *endpointsLock) Describe() string {
|
|
return fmt.Sprintf("%v/%v", el.EndpointsMeta.Namespace, el.EndpointsMeta.Name)
|
|
}
|
|
|
|
// Identity returns the Identity of the lock
|
|
func (el *endpointsLock) Identity() string {
|
|
return el.LockConfig.Identity
|
|
}
|