func RunReplace(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *ReplaceOptions) error {
if len(os.Args) > 1 && os.Args[1] == "update" {
printDeprecationWarning("replace", "update")
}
schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
if err != nil {
return err
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
force := cmdutil.GetFlagBool(cmd, "force")
if len(options.Filenames) == 0 {
return cmdutil.UsageError(cmd, "Must specify --filename to replace")
}
shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
if force {
return forceReplace(f, out, cmd, args, shortOutput, options)
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
Schema(schema).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
return r.Visit(func(info *resource.Info, err error) error {
if err != nil {
return err
}
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return err
}
// Serialize the object with the annotation applied.
obj, err := resource.NewHelper(info.Client, info.Mapping).Replace(info.Namespace, info.Name, true, info.Object)
if err != nil {
return cmdutil.AddSourceToErr("replacing", info.Source, err)
}
info.Refresh(obj, true)
printObjectSpecificMessage(obj, out)
cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, "replaced")
return 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) {
err := kubectl.ValidateParams(names, params)
if err != nil {
return nil, "", nil, nil, err
}
obj, err := generator.Generate(params)
if err != nil {
return nil, "", nil, nil, err
}
mapper, typer := f.Object()
version, kind, err := typer.ObjectVersionAndKind(obj)
if err != nil {
return nil, "", nil, nil, err
}
if len(overrides) > 0 {
obj, err = cmdutil.Merge(obj, overrides, kind)
if err != nil {
return nil, "", nil, nil, err
}
}
mapping, err := mapper.RESTMapping(kind, version)
if err != nil {
return nil, "", nil, nil, err
}
client, err := f.RESTClient(mapping)
if err != nil {
return nil, "", nil, nil, err
}
// TODO: extract this flag to a central location, when such a location exists.
if !cmdutil.GetFlagBool(cmd, "dry-run") {
resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
info, err := resourceMapper.InfoForObject(obj)
if err != nil {
return nil, "", nil, nil, err
}
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return nil, "", nil, nil, err
}
// Serialize the object with the annotation applied.
data, err := mapping.Codec.Encode(info.Object)
if err != nil {
return nil, "", nil, nil, err
}
obj, err = resource.NewHelper(client, mapping).Create(namespace, false, data)
if err != nil {
return nil, "", nil, nil, err
}
}
return obj, kind, mapper, mapping, err
}
func RunCreate(f *cmdutil.Factory, cmd *cobra.Command, out io.Writer, options *CreateOptions) error {
schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
if err != nil {
return err
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
Schema(schema).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
count := 0
err = r.Visit(func(info *resource.Info, err error) error {
if err != nil {
return err
}
// Update the annotation used by kubectl apply
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return cmdutil.AddSourceToErr("creating", info.Source, err)
}
obj, err := resource.NewHelper(info.Client, info.Mapping).Create(info.Namespace, true, info.Object)
if err != nil {
return cmdutil.AddSourceToErr("creating", info.Source, err)
}
count++
info.Refresh(obj, true)
shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
if !shortOutput {
printObjectSpecificMessage(info.Object, out)
}
cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, "created")
return nil
})
if err != nil {
return err
}
if count == 0 {
return fmt.Errorf("no objects passed to create")
}
return nil
}
func RunClusterInfo(factory *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
if len(os.Args) > 1 && os.Args[1] == "clusterinfo" {
printDeprecationWarning("cluster-info", "clusterinfo")
}
client, err := factory.ClientConfig()
if err != nil {
return err
}
printService(out, "Kubernetes master", client.Host)
mapper, typer := factory.Object()
cmdNamespace := cmdutil.GetFlagString(cmd, "namespace")
if cmdNamespace == "" {
cmdNamespace = api.NamespaceSystem
}
// TODO use generalized labels once they are implemented (#341)
b := resource.NewBuilder(mapper, typer, factory.ClientMapperForCommand()).
NamespaceParam(cmdNamespace).DefaultNamespace().
SelectorParam("kubernetes.io/cluster-service=true").
ResourceTypeOrNameArgs(false, []string{"services"}...).
Latest()
b.Do().Visit(func(r *resource.Info, err error) error {
if err != nil {
return err
}
services := r.Object.(*api.ServiceList).Items
for _, service := range services {
var link string
if len(service.Status.LoadBalancer.Ingress) > 0 {
ingress := service.Status.LoadBalancer.Ingress[0]
ip := ingress.IP
if ip == "" {
ip = ingress.Hostname
}
for _, port := range service.Spec.Ports {
link += "http://" + ip + ":" + strconv.Itoa(port.Port) + " "
}
} else {
link = client.Host + "/api/" + client.Version + "/proxy/namespaces/" + service.ObjectMeta.Namespace + "/services/" + service.ObjectMeta.Name
}
name := service.ObjectMeta.Labels["kubernetes.io/name"]
if len(name) == 0 {
name = service.ObjectMeta.Name
}
printService(out, name, link)
}
return nil
})
return nil
// TODO consider printing more information about cluster
}
func RunPatch(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, shortOutput bool, options *PatchOptions) error {
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
patch := cmdutil.GetFlagString(cmd, "patch")
if len(patch) == 0 {
return cmdutil.UsageError(cmd, "Must specify -p to patch")
}
patchBytes, err := yaml.ToJSON([]byte(patch))
if err != nil {
return fmt.Errorf("unable to parse %q: %v", patch, err)
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
ResourceTypeOrNameArgs(false, args...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) > 1 {
return fmt.Errorf("multiple resources provided")
}
info := infos[0]
name, namespace := info.Name, info.Namespace
mapping := info.ResourceMapping()
client, err := f.RESTClient(mapping)
if err != nil {
return err
}
helper := resource.NewHelper(client, mapping)
_, err = helper.Patch(namespace, name, api.StrategicMergePatchType, patchBytes)
if err != nil {
return err
}
cmdutil.PrintSuccess(mapper, shortOutput, out, "", name, "patched")
return nil
}
func RunDescribe(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *DescribeOptions) error {
selector := cmdutil.GetFlagString(cmd, "selector")
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
if len(args) == 0 && len(options.Filenames) == 0 {
fmt.Fprint(out, "You must specify the type of resource to describe. ", valid_resources)
return cmdutil.UsageError(cmd, "Required resource not specified.")
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
SelectorParam(selector).
ResourceTypeOrNameArgs(true, args...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
allErrs := []error{}
infos, err := r.Infos()
if err != nil {
if apierrors.IsNotFound(err) && len(args) == 2 {
return DescribeMatchingResources(mapper, typer, f, cmdNamespace, args[0], args[1], out, err)
}
allErrs = append(allErrs, err)
}
for _, info := range infos {
mapping := info.ResourceMapping()
describer, err := f.Describer(mapping)
if err != nil {
allErrs = append(allErrs, err)
continue
}
s, err := describer.Describe(info.Namespace, info.Name)
if err != nil {
allErrs = append(allErrs, err)
continue
}
fmt.Fprintf(out, "%s\n\n", s)
}
return utilerrors.NewAggregate(allErrs)
}
// Complete collects information required to run Convert command from command line.
func (o *ConvertOptions) Complete(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) (err error) {
o.outputVersion = cmdutil.OutputVersion(cmd, latest.GroupOrDie("").Version)
if !registered.IsRegisteredAPIVersion(o.outputVersion) {
cmdutil.UsageError(cmd, "'%s' is not a registered version.", o.outputVersion)
}
// build the builder
mapper, typer := f.Object()
if o.local {
fmt.Fprintln(out, "running in local mode...")
o.builder = resource.NewBuilder(mapper, typer, f.NilClientMapperForCommand())
} else {
o.builder = resource.NewBuilder(mapper, typer, f.ClientMapperForCommand())
schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
if err != nil {
return err
}
o.builder = o.builder.Schema(schema)
}
cmdNamespace, _, err := f.DefaultNamespace()
if err != nil {
return err
}
o.builder = o.builder.NamespaceParam(cmdNamespace).
ContinueOnError().
FilenameParam(false, o.filenames...).
Flatten()
// build the printer
o.out = out
outputFormat := cmdutil.GetFlagString(cmd, "output")
templateFile := cmdutil.GetFlagString(cmd, "template")
if len(outputFormat) == 0 {
if len(templateFile) == 0 {
outputFormat = "yaml"
} else {
outputFormat = "template"
}
}
o.printer, _, err = kubectl.GetPrinter(outputFormat, templateFile)
if err != nil {
return err
}
return nil
}
// Complete adapts from the command line args and factory to the data required.
func (o *AnnotateOptions) Complete(f *cmdutil.Factory, 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
annotationArgs := []string{}
metAnnotaionArg := false
for _, s := range args {
isAnnotation := strings.Contains(s, "=") || strings.HasSuffix(s, "-")
switch {
case !metAnnotaionArg && isAnnotation:
metAnnotaionArg = true
fallthrough
case metAnnotaionArg && isAnnotation:
annotationArgs = append(annotationArgs, s)
case !metAnnotaionArg && !isAnnotation:
o.resources = append(o.resources, s)
case metAnnotaionArg && !isAnnotation:
return fmt.Errorf("all resources must be specified before annotation changes: %s", s)
}
}
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
}
mapper, typer := f.Object()
o.builder = resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
FilenameParam(enforceNamespace, o.filenames...).
ResourceTypeOrNameArgs(o.all, o.resources...).
Flatten().
Latest()
return nil
}
// RunExplain executes the appropriate steps to print a model's documentation
func RunExplain(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
if len(args) != 1 {
return cmdutil.UsageError(cmd, "We accept only this format: explain RESOURCE")
}
client, err := f.Client()
if err != nil {
return err
}
recursive := cmdutil.GetFlagBool(cmd, "recursive")
apiV := cmdutil.GetFlagString(cmd, "api-version")
mapper, _ := f.Object()
// TODO: After we figured out the new syntax to separate group and resource, allow
// the users to use it in explain (kubectl explain <group><syntax><resource>).
// Refer to issue #16039 for why we do this. Refer to PR #15808 that used "/" syntax.
inModel, fieldsPath, err := kubectl.SplitAndParseResourceRequest(args[0], mapper)
if err != nil {
return err
}
// TODO: We should deduce the group for a resource by discovering the supported resources at server.
group, err := mapper.GroupForResource(inModel)
if err != nil {
return err
}
if len(apiV) == 0 {
groupMeta, err := latest.Group(group)
if err != nil {
return err
}
apiV = groupMeta.GroupVersion
}
swagSchema, err := kubectl.GetSwaggerSchema(apiV, client)
if err != nil {
return err
}
return kubectl.PrintModelDescription(inModel, fieldsPath, out, swagSchema, recursive)
}
func RunDelete(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *DeleteOptions) error {
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
deleteAll := cmdutil.GetFlagBool(cmd, "all")
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
SelectorParam(cmdutil.GetFlagString(cmd, "selector")).
SelectAllParam(deleteAll).
ResourceTypeOrNameArgs(false, args...).RequireObject(false).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
ignoreNotFound := cmdutil.GetFlagBool(cmd, "ignore-not-found")
if deleteAll {
f := cmd.Flags().Lookup("ignore-not-found")
// The flag should never be missing
if f == nil {
return fmt.Errorf("missing --ignore-not-found flag")
}
// If the user didn't explicitly set the option, default to ignoring NotFound errors when used with --all
if !f.Changed {
ignoreNotFound = true
}
}
shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
// By default use a reaper to delete all related resources.
if cmdutil.GetFlagBool(cmd, "cascade") {
return ReapResult(r, f, out, cmdutil.GetFlagBool(cmd, "cascade"), ignoreNotFound, cmdutil.GetFlagDuration(cmd, "timeout"), cmdutil.GetFlagInt(cmd, "grace-period"), shortOutput, mapper)
}
return DeleteResult(r, out, ignoreNotFound, shortOutput, mapper)
}
func RunStop(f *cmdutil.Factory, cmd *cobra.Command, args []string, out io.Writer, options *StopOptions) error {
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
ResourceTypeOrNameArgs(false, args...).
FilenameParam(enforceNamespace, options.Filenames...).
SelectorParam(cmdutil.GetFlagString(cmd, "selector")).
SelectAllParam(cmdutil.GetFlagBool(cmd, "all")).
Flatten().
Do()
if r.Err() != nil {
return r.Err()
}
shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
return ReapResult(r, f, out, false, cmdutil.GetFlagBool(cmd, "ignore-not-found"), cmdutil.GetFlagDuration(cmd, "timeout"), cmdutil.GetFlagInt(cmd, "grace-period"), shortOutput, mapper)
}
func RunExpose(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *ExposeOptions) error {
namespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
ResourceTypeOrNameArgs(false, args...).
Flatten().
Do()
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) > 1 {
return fmt.Errorf("multiple resources provided: %v", args)
}
info := infos[0]
mapping := info.ResourceMapping()
if err := f.CanBeExposed(mapping.Kind); err != nil {
return err
}
// Get the input object
inputObject, err := r.Object()
if err != nil {
return err
}
// Get the generator, setup and validate all required parameters
generatorName := cmdutil.GetFlagString(cmd, "generator")
generator, found := f.Generator(generatorName)
if !found {
return cmdutil.UsageError(cmd, fmt.Sprintf("generator %q not found.", generatorName))
}
names := generator.ParamNames()
params := kubectl.MakeParams(cmd, names)
name := info.Name
if len(name) > validation.DNS952LabelMaxLength {
name = name[:validation.DNS952LabelMaxLength]
}
params["default-name"] = name
// For objects that need a pod selector, derive it from the exposed object in case a user
// didn't explicitly specify one via --selector
if s, found := params["selector"]; found && kubectl.IsZero(s) {
s, err := f.PodSelectorForObject(inputObject)
if err != nil {
return cmdutil.UsageError(cmd, fmt.Sprintf("couldn't find selectors via --selector flag or introspection: %s", err))
}
params["selector"] = s
}
// For objects that need a port, derive it from the exposed object in case a user
// didn't explicitly specify one via --port
if port, found := params["port"]; found && kubectl.IsZero(port) {
ports, err := f.PortsForObject(inputObject)
if err != nil {
return cmdutil.UsageError(cmd, fmt.Sprintf("couldn't find port via --port flag or introspection: %s", err))
}
switch len(ports) {
case 0:
return cmdutil.UsageError(cmd, "couldn't find port via --port flag or introspection")
case 1:
params["port"] = ports[0]
default:
params["ports"] = strings.Join(ports, ",")
}
}
if kubectl.IsZero(params["labels"]) {
labels, err := f.LabelsForObject(inputObject)
if err != nil {
return err
}
params["labels"] = kubectl.MakeLabels(labels)
}
if err = kubectl.ValidateParams(names, params); err != nil {
return err
}
// Generate new object
object, err := generator.Generate(params)
if err != nil {
return err
}
if inline := cmdutil.GetFlagString(cmd, "overrides"); len(inline) > 0 {
object, err = cmdutil.Merge(object, inline, mapping.Kind)
if err != nil {
return err
}
}
resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
info, err = resourceMapper.InfoForObject(object)
if err != nil {
return err
}
// TODO: extract this flag to a central location, when such a location exists.
if cmdutil.GetFlagBool(cmd, "dry-run") {
return f.PrintObject(cmd, object, out)
}
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return err
}
// Serialize the object with the annotation applied.
data, err := info.Mapping.Codec.Encode(object)
if err != nil {
return err
}
object, err = resource.NewHelper(info.Client, info.Mapping).Create(namespace, false, data)
if err != nil {
return err
}
if len(cmdutil.GetFlagString(cmd, "output")) > 0 {
return f.PrintObject(cmd, object, out)
}
cmdutil.PrintSuccess(mapper, false, out, info.Mapping.Resource, info.Name, "exposed")
return nil
}
func RunAutoscale(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, filenames []string) error {
namespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
// validate flags
if err := validateFlags(cmd); err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
FilenameParam(enforceNamespace, filenames...).
ResourceTypeOrNameArgs(false, args...).
Flatten().
Do()
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) > 1 {
return fmt.Errorf("multiple resources provided: %v", args)
}
info := infos[0]
mapping := info.ResourceMapping()
if err := f.CanBeAutoscaled(mapping.Kind); err != nil {
return err
}
// Get the generator, setup and validate all required parameters
generatorName := cmdutil.GetFlagString(cmd, "generator")
generator, found := f.Generator(generatorName)
if !found {
return cmdutil.UsageError(cmd, fmt.Sprintf("generator %q not found.", generatorName))
}
names := generator.ParamNames()
params := kubectl.MakeParams(cmd, names)
name := info.Name
params["default-name"] = name
params["scaleRef-kind"] = mapping.Kind
params["scaleRef-name"] = name
params["scaleRef-apiVersion"] = mapping.APIVersion
if err = kubectl.ValidateParams(names, params); err != nil {
return err
}
// Generate new object
object, err := generator.Generate(params)
if err != nil {
return err
}
resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
hpa, err := resourceMapper.InfoForObject(object)
if err != nil {
return err
}
// TODO: extract this flag to a central location, when such a location exists.
if cmdutil.GetFlagBool(cmd, "dry-run") {
return f.PrintObject(cmd, object, out)
}
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(hpa); err != nil {
return err
}
object, err = resource.NewHelper(hpa.Client, hpa.Mapping).Create(namespace, false, object)
if err != nil {
return err
}
if len(cmdutil.GetFlagString(cmd, "output")) > 0 {
return f.PrintObject(cmd, object, out)
}
cmdutil.PrintSuccess(mapper, false, out, info.Mapping.Resource, info.Name, "autoscaled")
return nil
}
func RunRollingUpdate(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *RollingUpdateOptions) error {
if len(os.Args) > 1 && os.Args[1] == "rollingupdate" {
printDeprecationWarning("rolling-update", "rollingupdate")
}
err := validateArguments(cmd, options.Filenames, args)
if err != nil {
return err
}
deploymentKey := cmdutil.GetFlagString(cmd, "deployment-label-key")
filename := ""
image := cmdutil.GetFlagString(cmd, "image")
oldName := args[0]
rollback := cmdutil.GetFlagBool(cmd, "rollback")
period := cmdutil.GetFlagDuration(cmd, "update-period")
interval := cmdutil.GetFlagDuration(cmd, "poll-interval")
timeout := cmdutil.GetFlagDuration(cmd, "timeout")
dryrun := cmdutil.GetFlagBool(cmd, "dry-run")
outputFormat := cmdutil.GetFlagString(cmd, "output")
if len(options.Filenames) > 0 {
filename = options.Filenames[0]
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
client, err := f.Client()
if err != nil {
return err
}
var newRc *api.ReplicationController
// fetch rc
oldRc, err := client.ReplicationControllers(cmdNamespace).Get(oldName)
if err != nil {
if !errors.IsNotFound(err) || len(image) == 0 || len(args) > 1 {
return err
}
// We're in the middle of a rename, look for an RC with a source annotation of oldName
newRc, err := kubectl.FindSourceController(client, cmdNamespace, oldName)
if err != nil {
return err
}
return kubectl.Rename(client, newRc, oldName)
}
var keepOldName bool
var replicasDefaulted bool
mapper, typer := f.Object()
if len(filename) != 0 {
schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
if err != nil {
return err
}
request := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
Schema(schema).
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, filename).
Do()
obj, err := request.Object()
if err != nil {
return err
}
var ok bool
// Handle filename input from stdin. The resource builder always returns an api.List
// when creating resource(s) from a stream.
if list, ok := obj.(*api.List); ok {
if len(list.Items) > 1 {
return cmdutil.UsageError(cmd, "%s specifies multiple items", filename)
}
obj = list.Items[0]
}
newRc, ok = obj.(*api.ReplicationController)
if !ok {
if _, kind, err := typer.ObjectVersionAndKind(obj); err == nil {
return cmdutil.UsageError(cmd, "%s contains a %s not a ReplicationController", filename, kind)
}
glog.V(4).Infof("Object %#v is not a ReplicationController", obj)
return cmdutil.UsageError(cmd, "%s does not specify a valid ReplicationController", filename)
}
infos, err := request.Infos()
if err != nil || len(infos) != 1 {
glog.V(2).Infof("was not able to recover adequate information to discover if .spec.replicas was defaulted")
} else {
replicasDefaulted = isReplicasDefaulted(infos[0])
}
}
// If the --image option is specified, we need to create a new rc with at least one different selector
// than the old rc. This selector is the hash of the rc, which will differ because the new rc has a
// different image.
if len(image) != 0 {
keepOldName = len(args) == 1
newName := findNewName(args, oldRc)
if newRc, err = kubectl.LoadExistingNextReplicationController(client, cmdNamespace, newName); err != nil {
return err
}
if newRc != nil {
if inProgressImage := newRc.Spec.Template.Spec.Containers[0].Image; inProgressImage != image {
return cmdutil.UsageError(cmd, "Found existing in-progress update to image (%s).\nEither continue in-progress update with --image=%s or rollback with --rollback", inProgressImage, inProgressImage)
}
fmt.Fprintf(out, "Found existing update in progress (%s), resuming.\n", newRc.Name)
} else {
if oldRc.Spec.Template.Spec.Containers[0].Image == image {
return cmdutil.UsageError(cmd, "Specified --image must be distinct from existing container image")
}
newRc, err = kubectl.CreateNewControllerFromCurrentController(client, cmdNamespace, oldName, newName, image, deploymentKey)
if err != nil {
return err
}
}
// Update the existing replication controller with pointers to the 'next' controller
// and adding the <deploymentKey> label if necessary to distinguish it from the 'next' controller.
oldHash, err := api.HashObject(oldRc, client.Codec)
if err != nil {
return err
}
oldRc, err = kubectl.UpdateExistingReplicationController(client, oldRc, cmdNamespace, newRc.Name, deploymentKey, oldHash, out)
if err != nil {
return err
}
}
if rollback {
keepOldName = len(args) == 1
newName := findNewName(args, oldRc)
if newRc, err = kubectl.LoadExistingNextReplicationController(client, cmdNamespace, newName); err != nil {
return err
}
if newRc == nil {
return cmdutil.UsageError(cmd, "Could not find %s to rollback.\n", newName)
}
}
if oldName == newRc.Name {
return cmdutil.UsageError(cmd, "%s cannot have the same name as the existing ReplicationController %s",
filename, oldName)
}
updater := kubectl.NewRollingUpdater(newRc.Namespace, client)
// To successfully pull off a rolling update the new and old rc have to differ
// by at least one selector. Every new pod should have the selector and every
// old pod should not have the selector.
var hasLabel bool
for key, oldValue := range oldRc.Spec.Selector {
if newValue, ok := newRc.Spec.Selector[key]; ok && newValue != oldValue {
hasLabel = true
break
}
}
if !hasLabel {
return cmdutil.UsageError(cmd, "%s must specify a matching key with non-equal value in Selector for %s",
filename, oldName)
}
// TODO: handle scales during rolling update
if replicasDefaulted {
newRc.Spec.Replicas = oldRc.Spec.Replicas
}
if dryrun {
oldRcData := &bytes.Buffer{}
newRcData := &bytes.Buffer{}
if outputFormat == "" {
oldRcData.WriteString(oldRc.Name)
newRcData.WriteString(newRc.Name)
} else {
if err := f.PrintObject(cmd, oldRc, oldRcData); err != nil {
return err
}
if err := f.PrintObject(cmd, newRc, newRcData); err != nil {
return err
}
}
fmt.Fprintf(out, "Rolling from:\n%s\nTo:\n%s\n", string(oldRcData.Bytes()), string(newRcData.Bytes()))
return nil
}
updateCleanupPolicy := kubectl.DeleteRollingUpdateCleanupPolicy
if keepOldName {
updateCleanupPolicy = kubectl.RenameRollingUpdateCleanupPolicy
}
config := &kubectl.RollingUpdaterConfig{
Out: out,
OldRc: oldRc,
NewRc: newRc,
UpdatePeriod: period,
Interval: interval,
Timeout: timeout,
CleanupPolicy: updateCleanupPolicy,
MaxUnavailable: util.NewIntOrStringFromInt(0),
MaxSurge: util.NewIntOrStringFromInt(1),
}
if rollback {
err = kubectl.AbortRollingUpdate(config)
if err != nil {
return err
}
client.ReplicationControllers(config.NewRc.Namespace).Update(config.NewRc)
}
err = updater.Update(config)
if err != nil {
return err
}
message := "rolling updated"
if keepOldName {
newRc.Name = oldName
} else {
message = fmt.Sprintf("rolling updated to %q", newRc.Name)
}
newRc, err = client.ReplicationControllers(cmdNamespace).Get(newRc.Name)
if err != nil {
return err
}
if outputFormat != "" {
return f.PrintObject(cmd, newRc, out)
}
_, kind, err := api.Scheme.ObjectVersionAndKind(newRc)
if err != nil {
return err
}
_, res := meta.KindToResource(kind, false)
cmdutil.PrintSuccess(mapper, false, out, res, oldName, message)
return nil
}
func RunLabel(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *LabelOptions) error {
resources, labelArgs := []string{}, []string{}
first := true
for _, s := range args {
isLabel := strings.Contains(s, "=") || strings.HasSuffix(s, "-")
switch {
case first && isLabel:
first = false
fallthrough
case !first && isLabel:
labelArgs = append(labelArgs, s)
case first && !isLabel:
resources = append(resources, s)
case !first && !isLabel:
return cmdutil.UsageError(cmd, "all resources must be specified before label changes: %s", s)
}
}
if len(resources) < 1 && len(options.Filenames) == 0 {
return cmdutil.UsageError(cmd, "one or more resources must be specified as <resource> <name> or <resource>/<name>")
}
if len(labelArgs) < 1 {
return cmdutil.UsageError(cmd, "at least one label update is required")
}
selector := cmdutil.GetFlagString(cmd, "selector")
all := cmdutil.GetFlagBool(cmd, "all")
overwrite := cmdutil.GetFlagBool(cmd, "overwrite")
resourceVersion := cmdutil.GetFlagString(cmd, "resource-version")
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
lbls, remove, err := parseLabels(labelArgs)
if err != nil {
return cmdutil.UsageError(cmd, err.Error())
}
mapper, typer := f.Object()
b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
SelectorParam(selector).
ResourceTypeOrNameArgs(all, resources...).
Flatten().
Latest()
one := false
r := b.Do().IntoSingular(&one)
if err := r.Err(); err != nil {
return err
}
// only apply resource version locking on a single resource
if !one && len(resourceVersion) > 0 {
return cmdutil.UsageError(cmd, "--resource-version may only be used with a single resource")
}
// TODO: support bulk generic output a la Get
return r.Visit(func(info *resource.Info, err error) error {
if err != nil {
return err
}
var outputObj runtime.Object
if cmdutil.GetFlagBool(cmd, "dry-run") {
err = labelFunc(info.Object, overwrite, resourceVersion, lbls, remove)
if err != nil {
return err
}
outputObj = info.Object
} else {
name, namespace, obj := info.Name, info.Namespace, info.Object
oldData, err := json.Marshal(obj)
if err != nil {
return err
}
if err := labelFunc(obj, overwrite, resourceVersion, lbls, remove); err != nil {
return err
}
newData, err := json.Marshal(obj)
if err != nil {
return err
}
patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, obj)
if err != nil {
return err
}
mapping := info.ResourceMapping()
client, err := f.RESTClient(mapping)
if err != nil {
return err
}
helper := resource.NewHelper(client, mapping)
outputObj, err = helper.Patch(namespace, name, api.StrategicMergePatchType, patchBytes)
if err != nil {
return err
}
}
outputFormat := cmdutil.GetFlagString(cmd, "output")
if outputFormat != "" {
return f.PrintObject(cmd, outputObj, out)
}
cmdutil.PrintSuccess(mapper, false, out, info.Mapping.Resource, info.Name, "labeled")
return nil
})
}
func RunExpose(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *ExposeOptions) error {
namespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(namespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
ResourceTypeOrNameArgs(false, args...).
Flatten().
Do()
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) > 1 {
return fmt.Errorf("multiple resources provided: %v", args)
}
info := infos[0]
mapping := info.ResourceMapping()
if err := f.CanBeExposed(mapping.Kind); err != nil {
return err
}
// Get the input object
inputObject, err := r.Object()
if err != nil {
return err
}
// Get the generator, setup and validate all required parameters
generatorName := cmdutil.GetFlagString(cmd, "generator")
generator, found := f.Generator(generatorName)
if !found {
return cmdutil.UsageError(cmd, fmt.Sprintf("generator %q not found.", generatorName))
}
names := generator.ParamNames()
params := kubectl.MakeParams(cmd, names)
params["default-name"] = info.Name
// For objects that need a pod selector, derive it from the exposed object in case a user
// didn't explicitly specify one via --selector
if s, found := params["selector"]; found && kubectl.IsZero(s) {
s, err := f.PodSelectorForObject(inputObject)
if err != nil {
return cmdutil.UsageError(cmd, fmt.Sprintf("couldn't find selectors via --selector flag or introspection: %s", err))
}
params["selector"] = s
}
if cmdutil.GetFlagInt(cmd, "port") < 1 {
noPorts := true
for _, param := range names {
if param.Name == "port" {
noPorts = false
break
}
}
if cmdutil.GetFlagInt(cmd, "port") < 0 && !noPorts {
ports, err := f.PortsForObject(inputObject)
if err != nil {
return cmdutil.UsageError(cmd, fmt.Sprintf("couldn't find port via --port flag or introspection: %s", err))
}
switch len(ports) {
case 0:
return cmdutil.UsageError(cmd, "couldn't find port via --port flag or introspection")
case 1:
params["port"] = ports[0]
default:
return cmdutil.UsageError(cmd, fmt.Sprintf("multiple ports to choose from: %v, please explicitly specify a port using the --port flag.", ports))
}
}
}
if cmdutil.GetFlagBool(cmd, "create-external-load-balancer") {
params["create-external-load-balancer"] = "true"
}
if kubectl.IsZero(params["labels"]) {
labels, err := f.LabelsForObject(inputObject)
if err != nil {
return err
}
params["labels"] = kubectl.MakeLabels(labels)
}
if v := cmdutil.GetFlagString(cmd, "type"); v != "" {
params["type"] = v
}
err = kubectl.ValidateParams(names, params)
if err != nil {
return err
}
// Expose new object
object, err := generator.Generate(params)
if err != nil {
return err
}
inline := cmdutil.GetFlagString(cmd, "overrides")
if len(inline) > 0 {
object, err = cmdutil.Merge(object, inline, mapping.Kind)
if err != nil {
return err
}
}
resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
info, err = resourceMapper.InfoForObject(object)
if err != nil {
return err
}
// TODO: extract this flag to a central location, when such a location exists.
if cmdutil.GetFlagBool(cmd, "dry-run") {
fmt.Fprintln(out, "running in dry-run mode...")
} else {
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return err
}
object, err = resource.NewHelper(info.Client, info.Mapping).Create(namespace, false, info.Object)
if err != nil {
return err
}
}
outputFormat := cmdutil.GetFlagString(cmd, "output")
if outputFormat != "" {
return f.PrintObject(cmd, object, out)
}
cmdutil.PrintSuccess(mapper, false, out, info.Mapping.Resource, info.Name, "exposed")
return nil
}
// RunScale executes the scaling
func RunScale(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, shortOutput bool, options *ScaleOptions) error {
if len(os.Args) > 1 && os.Args[1] == "resize" {
printDeprecationWarning("scale", "resize")
}
count := cmdutil.GetFlagInt(cmd, "replicas")
if count < 0 {
return cmdutil.UsageError(cmd, "--replicas=COUNT is required, and COUNT must be greater than or equal to 0")
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
ResourceTypeOrNameArgs(false, args...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
info := infos[0]
mapping := info.ResourceMapping()
scaler, err := f.Scaler(mapping)
if err != nil {
return err
}
resourceVersion := cmdutil.GetFlagString(cmd, "resource-version")
if len(resourceVersion) != 0 && len(infos) > 1 {
return fmt.Errorf("cannot use --resource-version with multiple controllers")
}
currentSize := cmdutil.GetFlagInt(cmd, "current-replicas")
if currentSize != -1 && len(infos) > 1 {
return fmt.Errorf("cannot use --current-replicas with multiple controllers")
}
precondition := &kubectl.ScalePrecondition{Size: currentSize, ResourceVersion: resourceVersion}
retry := kubectl.NewRetryParams(kubectl.Interval, kubectl.Timeout)
var waitForReplicas *kubectl.RetryParams
if timeout := cmdutil.GetFlagDuration(cmd, "timeout"); timeout != 0 {
waitForReplicas = kubectl.NewRetryParams(kubectl.Interval, timeout)
}
errs := []error{}
for _, info := range infos {
if err := scaler.Scale(info.Namespace, info.Name, uint(count), precondition, retry, waitForReplicas); err != nil {
errs = append(errs, err)
continue
}
cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, "scaled")
}
return utilerrors.NewAggregate(errs)
}
func forceReplace(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, shortOutput bool, options *ReplaceOptions) error {
schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
if err != nil {
return err
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
for i, filename := range options.Filenames {
if filename == "-" {
tempDir, err := ioutil.TempDir("", "kubectl_replace_")
if err != nil {
return err
}
defer os.RemoveAll(tempDir)
tempFilename := filepath.Join(tempDir, "resource.stdin")
err = cmdutil.DumpReaderToFile(os.Stdin, tempFilename)
if err != nil {
return err
}
options.Filenames[i] = tempFilename
}
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
ResourceTypeOrNameArgs(false, args...).RequireObject(false).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
//Replace will create a resource if it doesn't exist already, so ignore not found error
ignoreNotFound := true
// By default use a reaper to delete all related resources.
if cmdutil.GetFlagBool(cmd, "cascade") {
glog.Warningf("\"cascade\" is set, kubectl will delete and re-create all resources managed by this resource (e.g. Pods created by a ReplicationController). Consider using \"kubectl rolling-update\" if you want to update a ReplicationController together with its Pods.")
err = ReapResult(r, f, out, cmdutil.GetFlagBool(cmd, "cascade"), ignoreNotFound, cmdutil.GetFlagDuration(cmd, "timeout"), cmdutil.GetFlagInt(cmd, "grace-period"), shortOutput, mapper)
} else {
err = DeleteResult(r, out, ignoreNotFound, shortOutput, mapper)
}
if err != nil {
return err
}
r = resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
Schema(schema).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
count := 0
err = r.Visit(func(info *resource.Info, err error) error {
if err != nil {
return err
}
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return err
}
// Serialize the object with the annotation applied.
data, err := info.Mapping.Codec.Encode(info.Object)
if err != nil {
return err
}
obj, err := resource.NewHelper(info.Client, info.Mapping).Create(info.Namespace, true, data)
if err != nil {
return err
}
count++
info.Refresh(obj, true)
printObjectSpecificMessage(obj, out)
cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, "replaced")
return nil
})
if err != nil {
return err
}
if count == 0 {
return fmt.Errorf("no objects passed to replace")
}
return nil
}
func RunApply(f *cmdutil.Factory, cmd *cobra.Command, out io.Writer, options *ApplyOptions) error {
shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
if err != nil {
return err
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
Schema(schema).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, options.Filenames...).
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
count := 0
err = r.Visit(func(info *resource.Info, err error) error {
// In this method, info.Object contains the object retrieved from the server
// and info.VersionedObject contains the object decoded from the input source.
if err != nil {
return err
}
// Get the modified configuration of the object. Embed the result
// as an annotation in the modified configuration, so that it will appear
// in the patch sent to the server.
modified, err := kubectl.GetModifiedConfiguration(info, true)
if err != nil {
return cmdutil.AddSourceToErr(fmt.Sprintf("retrieving modified configuration from:\n%v\nfor:", info), info.Source, err)
}
if err := info.Get(); err != nil {
return cmdutil.AddSourceToErr(fmt.Sprintf("retrieving current configuration of:\n%v\nfrom server for:", info), info.Source, err)
}
// Serialize the current configuration of the object from the server.
current, err := info.Mapping.Codec.Encode(info.Object)
if err != nil {
return cmdutil.AddSourceToErr(fmt.Sprintf("serializing current configuration from:\n%v\nfor:", info), info.Source, err)
}
// Retrieve the original configuration of the object from the annotation.
original, err := kubectl.GetOriginalConfiguration(info)
if err != nil {
return cmdutil.AddSourceToErr(fmt.Sprintf("retrieving original configuration from:\n%v\nfor:", info), info.Source, err)
}
// Compute a three way strategic merge patch to send to server.
patch, err := strategicpatch.CreateThreeWayMergePatch(original, modified, current, info.VersionedObject, false)
if err != nil {
format := "creating patch with:\noriginal:\n%s\nmodified:\n%s\ncurrent:\n%s\nfrom:\n%v\nfor:"
return cmdutil.AddSourceToErr(fmt.Sprintf(format, original, modified, current, info), info.Source, err)
}
helper := resource.NewHelper(info.Client, info.Mapping)
_, err = helper.Patch(info.Namespace, info.Name, api.StrategicMergePatchType, patch)
if err != nil {
return cmdutil.AddSourceToErr(fmt.Sprintf("applying patch:\n%s\nto:\n%v\nfor:", patch, info), info.Source, err)
}
count++
cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, "configured")
return nil
})
if err != nil {
return err
}
if count == 0 {
return fmt.Errorf("no objects passed to apply")
}
return nil
}
func RunEdit(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, filenames []string) error {
var printer kubectl.ResourcePrinter
var ext string
switch format := cmdutil.GetFlagString(cmd, "output"); format {
case "json":
printer = &kubectl.JSONPrinter{}
ext = ".json"
case "yaml":
printer = &kubectl.YAMLPrinter{}
ext = ".yaml"
default:
return cmdutil.UsageError(cmd, "The flag 'output' must be one of yaml|json")
}
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
rmap := &resource.Mapper{
ObjectTyper: typer,
RESTMapper: mapper,
ClientMapper: f.ClientMapperForCommand(),
}
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(enforceNamespace, filenames...).
ResourceTypeOrNameArgs(true, args...).
Latest().
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
defaultVersion := cmdutil.OutputVersion(cmd, clientConfig.Version)
results := editResults{}
for {
objs, err := resource.AsVersionedObjects(infos, defaultVersion)
if err != nil {
return preservedFile(err, results.file, out)
}
// if input object is a list, traverse and edit each item one at a time
for _, obj := range objs {
// TODO: add an annotating YAML printer that can print inline comments on each field,
// including descriptions or validation errors
// generate the file to edit
buf := &bytes.Buffer{}
if err := results.header.writeTo(buf); err != nil {
return preservedFile(err, results.file, out)
}
if err := printer.PrintObj(obj, buf); err != nil {
return preservedFile(err, results.file, out)
}
original := buf.Bytes()
// launch the editor
edit := editor.NewDefaultEditor()
edited, file, err := edit.LaunchTempFile("kubectl-edit-", ext, buf)
if err != nil {
return preservedFile(err, results.file, out)
}
// cleanup any file from the previous pass
if len(results.file) > 0 {
os.Remove(results.file)
}
glog.V(4).Infof("User edited:\n%s", string(edited))
lines, err := hasLines(bytes.NewBuffer(edited))
if err != nil {
return preservedFile(err, file, out)
}
// Compare content without comments
if bytes.Equal(stripComments(original), stripComments(edited)) {
if len(results.edit) > 0 {
preservedFile(nil, file, out)
} else {
os.Remove(file)
}
fmt.Fprintln(out, "Edit cancelled, no changes made.")
continue
}
if !lines {
if len(results.edit) > 0 {
preservedFile(nil, file, out)
} else {
os.Remove(file)
}
fmt.Fprintln(out, "Edit cancelled, saved file was empty.")
continue
}
results = editResults{
file: file,
}
// parse the edited file
updates, err := rmap.InfoForData(edited, "edited-file")
if err != nil {
return fmt.Errorf("The edited file had a syntax error: %v", err)
}
// annotate the edited object for kubectl apply
if err := kubectl.UpdateApplyAnnotation(updates); err != nil {
return preservedFile(err, file, out)
}
visitor := resource.NewFlattenListVisitor(updates, rmap)
// need to make sure the original namespace wasn't changed while editing
if err = visitor.Visit(resource.RequireNamespace(cmdNamespace)); err != nil {
return preservedFile(err, file, out)
}
// use strategic merge to create a patch
originalJS, err := yaml.ToJSON(original)
if err != nil {
return preservedFile(err, file, out)
}
editedJS, err := yaml.ToJSON(edited)
if err != nil {
return preservedFile(err, file, out)
}
patch, err := strategicpatch.CreateStrategicMergePatch(originalJS, editedJS, obj)
// TODO: change all jsonmerge to strategicpatch
// for checking preconditions
preconditions := []jsonmerge.PreconditionFunc{}
if err != nil {
glog.V(4).Infof("Unable to calculate diff, no merge is possible: %v", err)
return preservedFile(err, file, out)
} else {
preconditions = append(preconditions, jsonmerge.RequireKeyUnchanged("apiVersion"))
preconditions = append(preconditions, jsonmerge.RequireKeyUnchanged("kind"))
preconditions = append(preconditions, jsonmerge.RequireMetadataKeyUnchanged("name"))
results.version = defaultVersion
}
if hold, msg := jsonmerge.TestPreconditionsHold(patch, preconditions); !hold {
fmt.Fprintf(out, "error: %s", msg)
return preservedFile(nil, file, out)
}
err = visitor.Visit(func(info *resource.Info, err error) error {
patched, err := resource.NewHelper(info.Client, info.Mapping).Patch(info.Namespace, info.Name, api.StrategicMergePatchType, patch)
if err != nil {
fmt.Fprintln(out, results.addError(err, info))
return nil
}
info.Refresh(patched, true)
cmdutil.PrintSuccess(mapper, false, out, info.Mapping.Resource, info.Name, "edited")
return nil
})
if err != nil {
return preservedFile(err, file, out)
}
if results.retryable > 0 {
fmt.Fprintf(out, "You can run `kubectl replace -f %s` to try this update again.\n", file)
return errExit
}
if results.conflict > 0 {
fmt.Fprintf(out, "You must update your local resource version and run `kubectl replace -f %s` to overwrite the remote changes.\n", file)
return errExit
}
if len(results.edit) == 0 {
if results.notfound == 0 {
os.Remove(file)
} else {
fmt.Fprintf(out, "The edits you made on deleted resources have been saved to %q\n", file)
}
}
}
if len(results.edit) == 0 {
return nil
}
// loop again and edit the remaining items
infos = results.edit
}
return nil
}
// RunGet implements the generic Get command
// TODO: convert all direct flag accessors to a struct and pass that instead of cmd
func RunGet(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, options *GetOptions) error {
selector := cmdutil.GetFlagString(cmd, "selector")
allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
mapper, typer := f.Object()
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
if len(args) == 0 && len(options.Filenames) == 0 {
fmt.Fprint(out, "You must specify the type of resource to get. ", valid_resources, ` * componentstatuses (aka 'cs')
* endpoints (aka 'ep')
`)
return cmdutil.UsageError(cmd, "Required resource not specified.")
}
// handle watch separately since we cannot watch multiple resource types
isWatch, isWatchOnly := cmdutil.GetFlagBool(cmd, "watch"), cmdutil.GetFlagBool(cmd, "watch-only")
if isWatch || isWatchOnly {
r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, options.Filenames...).
SelectorParam(selector).
ResourceTypeOrNameArgs(true, args...).
SingleResourceType().
Latest().
Do()
err := r.Err()
if err != nil {
return err
}
infos, err := r.Infos()
if err != nil {
return err
}
if len(infos) != 1 {
return fmt.Errorf("watch is only supported on individual resources and resource collections - %d resources were found", len(infos))
}
info := infos[0]
mapping := info.ResourceMapping()
printer, err := f.PrinterForMapping(cmd, mapping, allNamespaces)
if err != nil {
return err
}
obj, err := r.Object()
if err != nil {
return err
}
rv, err := mapping.MetadataAccessor.ResourceVersion(obj)
if err != nil {
return err
}
// print the current object
if !isWatchOnly {
if err := printer.PrintObj(obj, out); err != nil {
return fmt.Errorf("unable to output the provided object: %v", err)
}
}
// print watched changes
w, err := r.Watch(rv)
if err != nil {
return err
}
kubectl.WatchLoop(w, func(e watch.Event) error {
return printer.PrintObj(e.Object, out)
})
return nil
}
b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, options.Filenames...).
SelectorParam(selector).
ResourceTypeOrNameArgs(true, args...).
ContinueOnError().
Latest()
printer, generic, err := cmdutil.PrinterForCommand(cmd)
if err != nil {
return err
}
if generic {
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
defaultVersion := clientConfig.Version
singular := false
r := b.Flatten().Do()
infos, err := r.IntoSingular(&singular).Infos()
if err != nil {
return err
}
// the outermost object will be converted to the output-version, but inner
// objects can use their mappings
version := cmdutil.OutputVersion(cmd, defaultVersion)
obj, err := resource.AsVersionedObject(infos, !singular, version)
if err != nil {
return err
}
return printer.PrintObj(obj, out)
}
// use the default printer for each object
printer = nil
var lastMapping *meta.RESTMapping
w := kubectl.GetNewTabWriter(out)
defer w.Flush()
return b.Flatten().Do().Visit(func(r *resource.Info, err error) error {
if err != nil {
return err
}
if printer == nil || lastMapping == nil || r.Mapping == nil || r.Mapping.Resource != lastMapping.Resource {
printer, err = f.PrinterForMapping(cmd, r.Mapping, allNamespaces)
if err != nil {
return err
}
lastMapping = r.Mapping
}
if _, found := printer.(*kubectl.HumanReadablePrinter); found {
return printer.PrintObj(r.Object, w)
}
return printer.PrintObj(r.Object, out)
})
}
func Run(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cobra.Command, args []string) error {
if len(os.Args) > 1 && os.Args[1] == "run-container" {
printDeprecationWarning("run", "run-container")
}
if len(args) == 0 {
return cmdutil.UsageError(cmd, "NAME is required for run")
}
interactive := cmdutil.GetFlagBool(cmd, "stdin")
tty := cmdutil.GetFlagBool(cmd, "tty")
if tty && !interactive {
return cmdutil.UsageError(cmd, "-i/--stdin is required for containers with --tty=true")
}
replicas := cmdutil.GetFlagInt(cmd, "replicas")
if interactive && replicas != 1 {
return cmdutil.UsageError(cmd, fmt.Sprintf("-i/--stdin requires that replicas is 1, found %d", replicas))
}
namespace, _, err := f.DefaultNamespace()
if err != nil {
return err
}
restartPolicy, err := getRestartPolicy(cmd, interactive)
if err != nil {
return err
}
if restartPolicy != api.RestartPolicyAlways && replicas != 1 {
return cmdutil.UsageError(cmd, fmt.Sprintf("--restart=%s requires that --replicas=1, found %d", restartPolicy, replicas))
}
generatorName := cmdutil.GetFlagString(cmd, "generator")
if len(generatorName) == 0 {
if restartPolicy == api.RestartPolicyAlways {
generatorName = "run/v1"
} else {
generatorName = "run-pod/v1"
}
}
generator, found := f.Generator(generatorName)
if !found {
return cmdutil.UsageError(cmd, fmt.Sprintf("Generator: %s not found.", generatorName))
}
names := generator.ParamNames()
params := kubectl.MakeParams(cmd, names)
params["name"] = args[0]
if len(args) > 1 {
params["args"] = args[1:]
}
params["env"] = cmdutil.GetFlagStringSlice(cmd, "env")
err = kubectl.ValidateParams(names, params)
if err != nil {
return err
}
obj, err := generator.Generate(params)
if err != nil {
return err
}
mapper, typer := f.Object()
version, kind, err := typer.ObjectVersionAndKind(obj)
if err != nil {
return err
}
inline := cmdutil.GetFlagString(cmd, "overrides")
if len(inline) > 0 {
obj, err = cmdutil.Merge(obj, inline, kind)
if err != nil {
return err
}
}
mapping, err := mapper.RESTMapping(kind, version)
if err != nil {
return err
}
client, err := f.RESTClient(mapping)
if err != nil {
return err
}
// TODO: extract this flag to a central location, when such a location exists.
if !cmdutil.GetFlagBool(cmd, "dry-run") {
resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
info, err := resourceMapper.InfoForObject(obj)
if err != nil {
return err
}
// Serialize the configuration into an annotation.
if err := kubectl.UpdateApplyAnnotation(info); err != nil {
return err
}
obj, err = resource.NewHelper(client, mapping).Create(namespace, false, info.Object)
if err != nil {
return err
}
}
attachFlag := cmd.Flags().Lookup("attach")
attach := cmdutil.GetFlagBool(cmd, "attach")
if !attachFlag.Changed && interactive {
attach = true
}
if attach {
opts := &AttachOptions{
In: cmdIn,
Out: cmdOut,
Err: cmdErr,
Stdin: interactive,
TTY: tty,
Attach: &DefaultRemoteAttach{},
}
config, err := f.ClientConfig()
if err != nil {
return err
}
opts.Config = config
client, err := f.Client()
if err != nil {
return err
}
opts.Client = client
// TODO: this should be abstracted into Factory to support other types
switch t := obj.(type) {
case *api.ReplicationController:
return handleAttachReplicationController(client, t, opts)
case *api.Pod:
return handleAttachPod(client, t, opts)
default:
return fmt.Errorf("cannot attach to %s: not implemented", kind)
}
}
outputFormat := cmdutil.GetFlagString(cmd, "output")
if outputFormat != "" {
return f.PrintObject(cmd, obj, cmdOut)
}
cmdutil.PrintSuccess(mapper, false, cmdOut, mapping.Resource, args[0], "created")
return nil
}