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72 lines
2.7 KiB
Go
72 lines
2.7 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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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 statefulset
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import (
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"fmt"
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apps "k8s.io/api/apps/v1beta1"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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clientset "k8s.io/client-go/kubernetes"
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appslisters "k8s.io/client-go/listers/apps/v1beta1"
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"k8s.io/client-go/util/retry"
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)
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// StatefulSetStatusUpdaterInterface is an interface used to update the StatefulSetStatus associated with a StatefulSet.
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// For any use other than testing, clients should create an instance using NewRealStatefulSetStatusUpdater.
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type StatefulSetStatusUpdaterInterface interface {
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// UpdateStatefulSetStatus sets the set's Status to status. Implementations are required to retry on conflicts,
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// but fail on other errors. If the returned error is nil set's Status has been successfully set to status.
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UpdateStatefulSetStatus(set *apps.StatefulSet, status *apps.StatefulSetStatus) error
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}
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// NewRealStatefulSetStatusUpdater returns a StatefulSetStatusUpdaterInterface that updates the Status of a StatefulSet,
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// using the supplied client and setLister.
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func NewRealStatefulSetStatusUpdater(
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client clientset.Interface,
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setLister appslisters.StatefulSetLister) StatefulSetStatusUpdaterInterface {
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return &realStatefulSetStatusUpdater{client, setLister}
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}
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type realStatefulSetStatusUpdater struct {
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client clientset.Interface
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setLister appslisters.StatefulSetLister
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}
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func (ssu *realStatefulSetStatusUpdater) UpdateStatefulSetStatus(
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set *apps.StatefulSet,
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status *apps.StatefulSetStatus) error {
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// don't wait due to limited number of clients, but backoff after the default number of steps
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return retry.RetryOnConflict(retry.DefaultRetry, func() error {
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set.Status = *status
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_, updateErr := ssu.client.AppsV1beta1().StatefulSets(set.Namespace).UpdateStatus(set)
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if updateErr == nil {
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return nil
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}
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if updated, err := ssu.setLister.StatefulSets(set.Namespace).Get(set.Name); err == nil {
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// make a copy so we don't mutate the shared cache
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set = updated.DeepCopy()
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} else {
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utilruntime.HandleError(fmt.Errorf("error getting updated StatefulSet %s/%s from lister: %v", set.Namespace, set.Name, err))
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}
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return updateErr
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})
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}
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var _ StatefulSetStatusUpdaterInterface = &realStatefulSetStatusUpdater{}
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