mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-31 13:50:01 +00:00
72 lines
2.6 KiB
Go
72 lines
2.6 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 util
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/golang/glog"
|
|
|
|
extensions "k8s.io/api/extensions/v1beta1"
|
|
errorsutil "k8s.io/apimachinery/pkg/util/errors"
|
|
unversionedextensions "k8s.io/client-go/kubernetes/typed/extensions/v1beta1"
|
|
extensionslisters "k8s.io/client-go/listers/extensions/v1beta1"
|
|
"k8s.io/client-go/util/retry"
|
|
"k8s.io/kubernetes/pkg/controller"
|
|
labelsutil "k8s.io/kubernetes/pkg/util/labels"
|
|
)
|
|
|
|
// TODO: use client library instead when it starts to support update retries
|
|
// see https://github.com/kubernetes/kubernetes/issues/21479
|
|
type updateRSFunc func(rs *extensions.ReplicaSet) error
|
|
|
|
// UpdateRSWithRetries updates a RS with given applyUpdate function. Note that RS not found error is ignored.
|
|
// The returned bool value can be used to tell if the RS is actually updated.
|
|
func UpdateRSWithRetries(rsClient unversionedextensions.ReplicaSetInterface, rsLister extensionslisters.ReplicaSetLister, namespace, name string, applyUpdate updateRSFunc) (*extensions.ReplicaSet, error) {
|
|
var rs *extensions.ReplicaSet
|
|
|
|
retryErr := retry.RetryOnConflict(retry.DefaultBackoff, func() error {
|
|
var err error
|
|
rs, err = rsLister.ReplicaSets(namespace).Get(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
rs = rs.DeepCopy()
|
|
// Apply the update, then attempt to push it to the apiserver.
|
|
if applyErr := applyUpdate(rs); applyErr != nil {
|
|
return applyErr
|
|
}
|
|
rs, err = rsClient.Update(rs)
|
|
return err
|
|
})
|
|
|
|
// Ignore the precondition violated error, but the RS isn't updated.
|
|
if retryErr == errorsutil.ErrPreconditionViolated {
|
|
glog.V(4).Infof("Replica set %s/%s precondition doesn't hold, skip updating it.", namespace, name)
|
|
retryErr = nil
|
|
}
|
|
|
|
return rs, retryErr
|
|
}
|
|
|
|
// GetReplicaSetHash returns the pod template hash of a ReplicaSet's pod template space
|
|
func GetReplicaSetHash(rs *extensions.ReplicaSet, uniquifier *int32) (string, error) {
|
|
rsTemplate := rs.Spec.Template.DeepCopy()
|
|
rsTemplate.Labels = labelsutil.CloneAndRemoveLabel(rsTemplate.Labels, extensions.DefaultDeploymentUniqueLabelKey)
|
|
return fmt.Sprintf("%d", controller.ComputeHash(rsTemplate, uniquifier)), nil
|
|
}
|