mirror of https://github.com/k3s-io/k3s
60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
/*
|
|
Copyright 2019 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 service
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
|
|
v1 "k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
"k8s.io/apimachinery/pkg/util/strategicpatch"
|
|
v1core "k8s.io/client-go/kubernetes/typed/core/v1"
|
|
)
|
|
|
|
// patch patches service's Status or ObjectMeta given the origin and
|
|
// updated ones. Change to spec will be ignored.
|
|
func patch(c v1core.CoreV1Interface, oldSvc *v1.Service, newSvc *v1.Service) (*v1.Service, error) {
|
|
// Reset spec to make sure only patch for Status or ObjectMeta.
|
|
newSvc.Spec = oldSvc.Spec
|
|
|
|
patchBytes, err := getPatchBytes(oldSvc, newSvc)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return c.Services(oldSvc.Namespace).Patch(oldSvc.Name, types.StrategicMergePatchType, patchBytes, "status")
|
|
}
|
|
|
|
func getPatchBytes(oldSvc *v1.Service, newSvc *v1.Service) ([]byte, error) {
|
|
oldData, err := json.Marshal(oldSvc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to Marshal oldData for svc %s/%s: %v", oldSvc.Namespace, oldSvc.Name, err)
|
|
}
|
|
|
|
newData, err := json.Marshal(newSvc)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to Marshal newData for svc %s/%s: %v", newSvc.Namespace, newSvc.Name, err)
|
|
}
|
|
|
|
patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, v1.Service{})
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to CreateTwoWayMergePatch for svc %s/%s: %v", oldSvc.Namespace, oldSvc.Name, err)
|
|
}
|
|
return patchBytes, nil
|
|
}
|