代码拉取完成,页面将自动刷新
/*
Copyright 2014 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 cmd
import (
"bytes"
"encoding/json"
"fmt"
"io"
"regexp"
"strings"
"github.com/golang/glog"
"github.com/renstrom/dedent"
"github.com/spf13/cobra"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/kubectl"
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"k8s.io/kubernetes/pkg/kubectl/resource"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/strategicpatch"
)
// AnnotateOptions have the data required to perform the annotate operation
type AnnotateOptions struct {
resources []string
newAnnotations map[string]string
removeAnnotations []string
builder *resource.Builder
filenames []string
selector string
overwrite bool
all bool
resourceVersion string
changeCause string
recordChangeCause bool
f *cmdutil.Factory
out io.Writer
cmd *cobra.Command
recursive bool
}
var (
annotate_resources = `
pod (po), service (svc), replicationcontroller (rc),
node (no), event (ev), componentstatuse (cs),
limitrange (limits), persistentvolume (pv), persistentvolumeclaim (pvc),
horizontalpodautoscaler (hpa), resourcequota (quota), secret`
annotate_long = dedent.Dedent(`
Update the annotations on one or more resources.
An annotation is a key/value pair that can hold larger (compared to a label), and possibly not human-readable, data.
It is intended to store non-identifying auxiliary data, especially data manipulated by tools and system extensions.
If --overwrite is true, then existing annotations can be overwritten, otherwise attempting to overwrite an annotation will result in an error.
If --resource-version is specified, then updates will use this resource version, otherwise the existing resource-version will be used.
Possible resources include (case insensitive):`) + annotate_resources
annotate_example = dedent.Dedent(`
# Update pod 'foo' with the annotation 'description' and the value 'my frontend'.
# If the same annotation is set multiple times, only the last value will be applied
kubectl annotate pods foo description='my frontend'
# Update a pod identified by type and name in "pod.json"
kubectl annotate -f pod.json description='my frontend'
# Update pod 'foo' with the annotation 'description' and the value 'my frontend running nginx', overwriting any existing value.
kubectl annotate --overwrite pods foo description='my frontend running nginx'
# Update all pods in the namespace
kubectl annotate pods --all description='my frontend running nginx'
# Update pod 'foo' only if the resource is unchanged from version 1.
kubectl annotate pods foo description='my frontend running nginx' --resource-version=1
# Update pod 'foo' by removing an annotation named 'description' if it exists.
# Does not require the --overwrite flag.
kubectl annotate pods foo description-`)
)
func NewCmdAnnotate(f *cmdutil.Factory, out io.Writer) *cobra.Command {
options := &AnnotateOptions{}
validArgs, argAliases := []string{}, []string{}
resources := regexp.MustCompile(`\s*,`).Split(annotate_resources, -1)
for _, r := range resources {
validArgs = append(validArgs, strings.Fields(r)[0])
argAliases = kubectl.ResourceAliases(validArgs)
}
cmd := &cobra.Command{
Use: "annotate [--overwrite] (-f FILENAME | TYPE NAME) KEY_1=VAL_1 ... KEY_N=VAL_N [--resource-version=version]",
Short: "Update the annotations on a resource",
Long: annotate_long,
Example: annotate_example,
Run: func(cmd *cobra.Command, args []string) {
if err := options.Complete(f, out, cmd, args); err != nil {
cmdutil.CheckErr(err)
}
if err := options.Validate(args); err != nil {
cmdutil.CheckErr(cmdutil.UsageError(cmd, err.Error()))
}
if err := options.RunAnnotate(); err != nil {
cmdutil.CheckErr(err)
}
},
ValidArgs: validArgs,
ArgAliases: argAliases,
}
cmdutil.AddPrinterFlags(cmd)
cmdutil.AddInclude3rdPartyFlags(cmd)
cmd.Flags().StringVarP(&options.selector, "selector", "l", "", "Selector (label query) to filter on")
cmd.Flags().BoolVar(&options.overwrite, "overwrite", false, "If true, allow annotations to be overwritten, otherwise reject annotation updates that overwrite existing annotations.")
cmd.Flags().BoolVar(&options.all, "all", false, "select all resources in the namespace of the specified resource types")
cmd.Flags().StringVar(&options.resourceVersion, "resource-version", "", "If non-empty, the annotation update will only succeed if this is the current resource-version for the object. Only valid when specifying a single resource.")
usage := "Filename, directory, or URL to a file identifying the resource to update the annotation"
kubectl.AddJsonFilenameFlag(cmd, &options.filenames, usage)
cmdutil.AddRecursiveFlag(cmd, &options.recursive)
cmdutil.AddRecordFlag(cmd)
return cmd
}
// Complete adapts from the command line args and factory to the data required.
func (o *AnnotateOptions) Complete(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) (err error) {
namespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
// retrieves resource and annotation args from args
// also checks args to verify that all resources are specified before annotations
resources, annotationArgs, err := cmdutil.GetResourcesAndPairs(args, "annotation")
if err != nil {
return err
}
o.resources = resources
if len(o.resources) < 1 && len(o.filenames) == 0 {
return fmt.Errorf("one or more resources must be specified as <resource> <name> or <resource>/<name>")
}
if len(annotationArgs) < 1 {
return fmt.Errorf("at least one annotation update is required")
}
if o.newAnnotations, o.removeAnnotations, err = parseAnnotations(annotationArgs); err != nil {
return err
}
o.recordChangeCause = cmdutil.GetRecordFlag(cmd)
o.changeCause = f.Command()
mapper, typer := f.Object(cmdutil.GetIncludeThirdPartyAPIs(cmd))
o.builder = resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
FilenameParam(enforceNamespace, o.recursive, o.filenames...).
SelectorParam(o.selector).
ResourceTypeOrNameArgs(o.all, o.resources...).
Flatten().
Latest()
o.f = f
o.out = out
o.cmd = cmd
return nil
}
// Validate checks to the AnnotateOptions to see if there is sufficient information run the command.
func (o AnnotateOptions) Validate(args []string) error {
return validateAnnotations(o.removeAnnotations, o.newAnnotations)
}
// RunAnnotate does the work
func (o AnnotateOptions) RunAnnotate() error {
r := o.builder.Do()
if err := r.Err(); err != nil {
return err
}
var singularResource bool
r.IntoSingular(&singularResource)
// only apply resource version locking on a single resource.
// we must perform this check after o.builder.Do() as
// []o.resources can not not accurately return the proper number
// of resources when they are not passed in "resource/name" format.
if !singularResource && len(o.resourceVersion) > 0 {
return fmt.Errorf("--resource-version may only be used with a single resource")
}
return r.Visit(func(info *resource.Info, err error) error {
if err != nil {
return err
}
obj, err := cmdutil.MaybeConvertObject(info.Object, info.Mapping.GroupVersionKind.GroupVersion(), info.Mapping)
if err != nil {
return err
}
name, namespace := info.Name, info.Namespace
oldData, err := json.Marshal(obj)
if err != nil {
return err
}
// If we should record change-cause, add it to new annotations
if cmdutil.ContainsChangeCause(info) || o.recordChangeCause {
o.newAnnotations[kubectl.ChangeCauseAnnotation] = o.changeCause
}
if err := o.updateAnnotations(obj); err != nil {
return err
}
newData, err := json.Marshal(obj)
if err != nil {
return err
}
patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj)
createdPatch := err == nil
if err != nil {
glog.V(2).Infof("couldn't compute patch: %v", err)
}
mapping := info.ResourceMapping()
client, err := o.f.ClientForMapping(mapping)
if err != nil {
return err
}
helper := resource.NewHelper(client, mapping)
var outputObj runtime.Object
if createdPatch {
outputObj, err = helper.Patch(namespace, name, api.StrategicMergePatchType, patchBytes)
} else {
outputObj, err = helper.Replace(namespace, name, false, obj)
}
if err != nil {
return err
}
mapper, _ := o.f.Object(cmdutil.GetIncludeThirdPartyAPIs(o.cmd))
outputFormat := cmdutil.GetFlagString(o.cmd, "output")
if outputFormat != "" {
return o.f.PrintObject(o.cmd, mapper, outputObj, o.out)
}
cmdutil.PrintSuccess(mapper, false, o.out, info.Mapping.Resource, info.Name, "annotated")
return nil
})
}
// parseAnnotations retrieves new and remove annotations from annotation args
func parseAnnotations(annotationArgs []string) (map[string]string, []string, error) {
return cmdutil.ParsePairs(annotationArgs, "annotation", true)
}
// validateAnnotations checks the format of annotation args and checks removed annotations aren't in the new annotations map
func validateAnnotations(removeAnnotations []string, newAnnotations map[string]string) error {
var modifyRemoveBuf bytes.Buffer
for _, removeAnnotation := range removeAnnotations {
if _, found := newAnnotations[removeAnnotation]; found {
if modifyRemoveBuf.Len() > 0 {
modifyRemoveBuf.WriteString(", ")
}
modifyRemoveBuf.WriteString(fmt.Sprintf(removeAnnotation))
}
}
if modifyRemoveBuf.Len() > 0 {
return fmt.Errorf("can not both modify and remove the following annotation(s) in the same command: %s", modifyRemoveBuf.String())
}
return nil
}
// validateNoAnnotationOverwrites validates that when overwrite is false, to-be-updated annotations don't exist in the object annotation map (yet)
func validateNoAnnotationOverwrites(accessor meta.Object, annotations map[string]string) error {
var buf bytes.Buffer
for key := range annotations {
// change-cause annotation can always be overwritten
if key == kubectl.ChangeCauseAnnotation {
continue
}
if value, found := accessor.GetAnnotations()[key]; found {
if buf.Len() > 0 {
buf.WriteString("; ")
}
buf.WriteString(fmt.Sprintf("'%s' already has a value (%s)", key, value))
}
}
if buf.Len() > 0 {
return fmt.Errorf("--overwrite is false but found the following declared annotation(s): %s", buf.String())
}
return nil
}
// updateAnnotations updates annotations of obj
func (o AnnotateOptions) updateAnnotations(obj runtime.Object) error {
accessor, err := meta.Accessor(obj)
if err != nil {
return err
}
if !o.overwrite {
if err := validateNoAnnotationOverwrites(accessor, o.newAnnotations); err != nil {
return err
}
}
annotations := accessor.GetAnnotations()
if annotations == nil {
annotations = make(map[string]string)
}
for key, value := range o.newAnnotations {
annotations[key] = value
}
for _, annotation := range o.removeAnnotations {
delete(annotations, annotation)
}
accessor.SetAnnotations(annotations)
if len(o.resourceVersion) != 0 {
accessor.SetResourceVersion(o.resourceVersion)
}
return nil
}
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。