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Merge pull request #45012 from xiangpengzhao/fix-delete-svc

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Automatic merge from submit-queue

Remove service on termination when exec 'kubectl run' command with flags "--rm" and "--expose"

**What this PR does / why we need it**:
As the title says and issue #40504 mentioned.
cc @tanapoln

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #40504 

**Special notes for your reviewer**:
Related to: #44915

**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2017-07-19 07:59:34 -07:00 committed by GitHub
commit 575cbdf7d4
2 changed files with 72 additions and 54 deletions
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124
pkg/kubectl/cmd/run.go
View File

@ -86,6 +86,13 @@ var (
kubectl run pi --schedule="0/5 * * * ?" --image=perl --restart=OnFailure -- perl -Mbignum=bpi -wle 'print bpi(2000)'`))
)
type RunObject struct {
Object runtime.Object
Kind string
Mapper meta.RESTMapper
Mapping *meta.RESTMapping
}
func NewCmdRun(f cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer) *cobra.Command {
cmd := &cobra.Command{
Use: "run NAME --image=image [--env=\"key=value\"] [--port=port] [--replicas=replicas] [--dry-run=bool] [--overrides=inline-json] [--command] -- [COMMAND] [args...]",
@ -254,19 +261,23 @@ func RunRun(f cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *c
params["env"] = cmdutil.GetFlagStringArray(cmd, "env")
obj, _, mapper, mapping, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "overrides"), namespace)
var runObjectMap = map[string]*RunObject{}
runObject, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "overrides"), namespace)
if err != nil {
return err
}
runObjectMap[generatorName] = runObject
if cmdutil.GetFlagBool(cmd, "expose") {
serviceGenerator := cmdutil.GetFlagString(cmd, "service-generator")
if len(serviceGenerator) == 0 {
return cmdutil.UsageErrorf(cmd, "No service generator specified")
}
if err := generateService(f, cmd, args, serviceGenerator, params, namespace, cmdOut); err != nil {
serviceRunObject, err := generateService(f, cmd, args, serviceGenerator, params, namespace, cmdOut)
if err != nil {
return err
}
runObjectMap[generatorName] = serviceRunObject
}
if attach {
@ -297,7 +308,7 @@ func RunRun(f cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *c
}
opts.PodClient = clientset.Core()
attachablePod, err := f.AttachablePodForObject(obj, opts.GetPodTimeout)
attachablePod, err := f.AttachablePodForObject(runObject.Object, opts.GetPodTimeout)
if err != nil {
return err
}
@ -317,30 +328,32 @@ func RunRun(f cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *c
}
if remove {
namespace, err = mapping.MetadataAccessor.Namespace(obj)
if err != nil {
return err
}
var name string
name, err = mapping.MetadataAccessor.Name(obj)
if err != nil {
return err
}
r := f.NewBuilder(true).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
ResourceNames(mapping.Resource, name).
Flatten().
Do()
// Note: we pass in "true" for the "quiet" parameter because
// ReadResult will only print one thing based on the "quiet"
// flag, and that's the "pod xxx deleted" message. If they
// asked for us to remove the pod (via --rm) then telling them
// its been deleted is unnecessary since that's what they asked
// for. We should only print something if the "rm" fails.
err = ReapResult(r, f, cmdOut, true, true, 0, -1, false, false, mapper, true)
if err != nil {
return err
for _, obj := range runObjectMap {
namespace, err = obj.Mapping.MetadataAccessor.Namespace(obj.Object)
if err != nil {
return err
}
var name string
name, err = obj.Mapping.MetadataAccessor.Name(obj.Object)
if err != nil {
return err
}
r := f.NewBuilder(true).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
ResourceNames(obj.Mapping.Resource, name).
Flatten().
Do()
// Note: we pass in "true" for the "quiet" parameter because
// ReadResult will only print one thing based on the "quiet"
// flag, and that's the "pod xxx deleted" message. If they
// asked for us to remove the pod (via --rm) then telling them
// its been deleted is unnecessary since that's what they asked
// for. We should only print something if the "rm" fails.
err = ReapResult(r, f, cmdOut, true, true, 0, -1, false, false, obj.Mapper, true)
if err != nil {
return err
}
}
}
@ -374,9 +387,9 @@ func RunRun(f cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *c
outputFormat := cmdutil.GetFlagString(cmd, "output")
if outputFormat != "" || cmdutil.GetDryRunFlag(cmd) {
return f.PrintObject(cmd, false, mapper, obj, cmdOut)
return f.PrintObject(cmd, false, runObject.Mapper, runObject.Object, cmdOut)
}
cmdutil.PrintSuccess(mapper, false, cmdOut, mapping.Resource, args[0], cmdutil.GetDryRunFlag(cmd), "created")
cmdutil.PrintSuccess(runObject.Mapper, false, cmdOut, runObject.Mapping.Resource, args[0], cmdutil.GetDryRunFlag(cmd), "created")
return nil
}
@ -508,17 +521,17 @@ func verifyImagePullPolicy(cmd *cobra.Command) error {
return cmdutil.UsageErrorf(cmd, "invalid image pull policy: %s", pullPolicy)
}
func generateService(f cmdutil.Factory, cmd *cobra.Command, args []string, serviceGenerator string, paramsIn map[string]interface{}, namespace string, out io.Writer) error {
func generateService(f cmdutil.Factory, cmd *cobra.Command, args []string, serviceGenerator string, paramsIn map[string]interface{}, namespace string, out io.Writer) (*RunObject, error) {
generators := f.Generators("expose")
generator, found := generators[serviceGenerator]
if !found {
return fmt.Errorf("missing service generator: %s", serviceGenerator)
return nil, fmt.Errorf("missing service generator: %s", serviceGenerator)
}
names := generator.ParamNames()
port := cmdutil.GetFlagString(cmd, "port")
if len(port) == 0 {
return fmt.Errorf("--port must be set when exposing a service")
return nil, fmt.Errorf("--port must be set when exposing a service")
}
params := map[string]interface{}{}
@ -531,7 +544,7 @@ func generateService(f cmdutil.Factory, cmd *cobra.Command, args []string, servi
name, found := params["name"]
if !found || len(name.(string)) == 0 {
return fmt.Errorf("name is a required parameter")
return nil, fmt.Errorf("name is a required parameter")
}
selector, found := params["labels"]
if !found || len(selector.(string)) == 0 {
@ -543,42 +556,42 @@ func generateService(f cmdutil.Factory, cmd *cobra.Command, args []string, servi
params["default-name"] = name
}
obj, _, mapper, mapping, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "service-overrides"), namespace)
runObject, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "service-overrides"), namespace)
if err != nil {
return err
return nil, err
}
if cmdutil.GetFlagString(cmd, "output") != "" || cmdutil.GetDryRunFlag(cmd) {
err := f.PrintObject(cmd, false, mapper, obj, out)
err := f.PrintObject(cmd, false, runObject.Mapper, runObject.Object, out)
if err != nil {
return err
return nil, err
}
if cmdutil.GetFlagString(cmd, "output") == "yaml" {
fmt.Fprintln(out, "---")
}
return nil
return runObject, nil
}
cmdutil.PrintSuccess(mapper, false, out, mapping.Resource, args[0], cmdutil.GetDryRunFlag(cmd), "created")
cmdutil.PrintSuccess(runObject.Mapper, false, out, runObject.Mapping.Resource, args[0], cmdutil.GetDryRunFlag(cmd), "created")
return nil
return runObject, nil
}
func createGeneratedObject(f cmdutil.Factory, cmd *cobra.Command, generator kubectl.Generator, names []kubectl.GeneratorParam, params map[string]interface{}, overrides, namespace string) (runtime.Object, string, meta.RESTMapper, *meta.RESTMapping, error) {
func createGeneratedObject(f cmdutil.Factory, cmd *cobra.Command, generator kubectl.Generator, names []kubectl.GeneratorParam, params map[string]interface{}, overrides, namespace string) (*RunObject, error) {
err := kubectl.ValidateParams(names, params)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
// TODO: Validate flag usage against selected generator. More tricky since --expose was added.
obj, err := generator.Generate(params)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
mapper, typer := f.Object()
groupVersionKinds, _, err := typer.ObjectKinds(obj)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
groupVersionKind := groupVersionKinds[0]
@ -586,26 +599,26 @@ func createGeneratedObject(f cmdutil.Factory, cmd *cobra.Command, generator kube
codec := runtime.NewCodec(f.JSONEncoder(), f.Decoder(true))
obj, err = cmdutil.Merge(codec, obj, overrides)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
}
mapping, err := mapper.RESTMapping(groupVersionKind.GroupKind(), groupVersionKind.Version)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
client, err := f.ClientForMapping(mapping)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
annotations, err := mapping.MetadataAccessor.Annotations(obj)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
if cmdutil.GetRecordFlag(cmd) || len(annotations[kubectl.ChangeCauseAnnotation]) > 0 {
if err := cmdutil.RecordChangeCause(obj, f.Command(cmd, false)); err != nil {
return nil, "", nil, nil, err
return nil, err
}
}
if !cmdutil.GetDryRunFlag(cmd) {
@ -617,17 +630,22 @@ func createGeneratedObject(f cmdutil.Factory, cmd *cobra.Command, generator kube
}
info, err := resourceMapper.InfoForObject(obj, nil)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
if err := kubectl.CreateOrUpdateAnnotation(cmdutil.GetFlagBool(cmd, cmdutil.ApplyAnnotationsFlag), info, f.JSONEncoder()); err != nil {
return nil, "", nil, nil, err
return nil, err
}
obj, err = resource.NewHelper(client, mapping).Create(namespace, false, info.Object)
if err != nil {
return nil, "", nil, nil, err
return nil, err
}
}
return obj, groupVersionKind.Kind, mapper, mapping, err
return &RunObject{
Object: obj,
Kind: groupVersionKind.Kind,
Mapper: mapper,
Mapping: mapping,
}, nil
}

2
pkg/kubectl/cmd/run_test.go
View File

@ -334,7 +334,7 @@ func TestGenerateService(t *testing.T) {
}
buff := &bytes.Buffer{}
err := generateService(f, cmd, test.args, test.serviceGenerator, test.params, "namespace", buff)
_, err := generateService(f, cmd, test.args, test.serviceGenerator, test.params, "namespace", buff)
if test.expectErr {
if err == nil {
t.Error("unexpected non-error")