代码拉取完成,页面将自动刷新
/*
Copyright 2016 The Kubernetes Authors All rights reserved.
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 kubectl
import (
"fmt"
"io"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apis/extensions"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/runtime"
deploymentutil "k8s.io/kubernetes/pkg/util/deployment"
sliceutil "k8s.io/kubernetes/pkg/util/slice"
)
const (
ChangeCauseAnnotation = "kubernetes.io/change-cause"
)
// HistoryViewer provides an interface for resources that can be rolled back.
type HistoryViewer interface {
History(namespace, name string) (HistoryInfo, error)
}
func HistoryViewerFor(kind unversioned.GroupKind, c clientset.Interface) (HistoryViewer, error) {
switch kind {
case extensions.Kind("Deployment"):
return &DeploymentHistoryViewer{c}, nil
}
return nil, fmt.Errorf("no history viewer has been implemented for %q", kind)
}
// HistoryInfo stores the mapping from revision to podTemplate;
// note that change-cause annotation should be copied to podTemplate
type HistoryInfo struct {
RevisionToTemplate map[int64]*api.PodTemplateSpec
}
type DeploymentHistoryViewer struct {
c clientset.Interface
}
// History returns a revision-to-replicaset map as the revision history of a deployment
func (h *DeploymentHistoryViewer) History(namespace, name string) (HistoryInfo, error) {
historyInfo := HistoryInfo{
RevisionToTemplate: make(map[int64]*api.PodTemplateSpec),
}
deployment, err := h.c.Extensions().Deployments(namespace).Get(name)
if err != nil {
return historyInfo, fmt.Errorf("failed to retrieve deployment %s: %v", name, err)
}
_, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(deployment, h.c)
if err != nil {
return historyInfo, fmt.Errorf("failed to retrieve replica sets from deployment %s: %v", name, err)
}
allRSs := allOldRSs
if newRS != nil {
allRSs = append(allRSs, newRS)
}
for _, rs := range allRSs {
v, err := deploymentutil.Revision(rs)
if err != nil {
continue
}
historyInfo.RevisionToTemplate[v] = &rs.Spec.Template
changeCause := getChangeCause(rs)
if historyInfo.RevisionToTemplate[v].Annotations == nil {
historyInfo.RevisionToTemplate[v].Annotations = make(map[string]string)
}
if len(changeCause) > 0 {
historyInfo.RevisionToTemplate[v].Annotations[ChangeCauseAnnotation] = changeCause
}
}
return historyInfo, nil
}
// PrintRolloutHistory prints a formatted table of the input revision history of the deployment
func PrintRolloutHistory(historyInfo HistoryInfo, resource, name string) (string, error) {
if len(historyInfo.RevisionToTemplate) == 0 {
return fmt.Sprintf("No rollout history found in %s %q", resource, name), nil
}
// Sort the revisionToChangeCause map by revision
revisions := make([]int64, 0, len(historyInfo.RevisionToTemplate))
for r := range historyInfo.RevisionToTemplate {
revisions = append(revisions, r)
}
sliceutil.SortInts64(revisions)
return tabbedString(func(out io.Writer) error {
fmt.Fprintf(out, "%s %q:\n", resource, name)
fmt.Fprintf(out, "REVISION\tCHANGE-CAUSE\n")
for _, r := range revisions {
// Find the change-cause of revision r
changeCause := historyInfo.RevisionToTemplate[r].Annotations[ChangeCauseAnnotation]
if len(changeCause) == 0 {
changeCause = "<none>"
}
fmt.Fprintf(out, "%d\t%s\n", r, changeCause)
}
return nil
})
}
// getChangeCause returns the change-cause annotation of the input object
func getChangeCause(obj runtime.Object) string {
accessor, err := meta.Accessor(obj)
if err != nil {
return ""
}
return accessor.GetAnnotations()[ChangeCauseAnnotation]
}
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。