// applyPatch reads the latest version of the object, writes it to version, then attempts to merge
// the changes onto it without conflict. If a conflict occurs jsonmerge.IsConflicting(err) is
// true. The info object is mutated
func applyPatch(delta *jsonmerge.Delta, info *resource.Info, version string) error {
if err := info.Get(); err != nil {
return patchError{err}
}
obj, err := resource.AsVersionedObject([]*resource.Info{info}, false, version)
if err != nil {
return patchError{err}
}
data, err := info.Mapping.Codec.Encode(obj)
if err != nil {
return patchError{err}
}
merged, err := delta.Apply(data)
if err != nil {
return patchError{err}
}
updated, err := resource.NewHelper(info.Client, info.Mapping).Replace(info.Namespace, info.Name, false, merged)
if err != nil {
return err
}
info.Refresh(updated, true)
return nil
}
func changeObjectsVersion(items []kruntime.Object) {
if errs := kruntime.DecodeList(items, api.Scheme); len(errs) > 0 {
log.Fatalf("Unable to decode Template objects: %v", errs)
}
for i, obj := range items {
_, kind, err := api.Scheme.ObjectVersionAndKind(obj)
if err != nil {
glog.Infof("Template.Objects[%d]: Unable to determine version and kind: %v", i, err)
continue
}
mapping, err := latest.RESTMapper.RESTMapping(kind, *outputVersion)
if err != nil {
glog.Infof("Template.Objects[%d]: Unable to get REST mappings: %v", err)
continue
}
info := resource.Info{Object: obj, Mapping: mapping}
outputObj, err := resource.AsVersionedObject([]*resource.Info{&info}, false, *outputVersion)
if err != nil {
glog.Infof("Template.Objects[%d]: Unable to convert: %v", err)
continue
}
items[i] = outputObj
}
}
func (v *VolumeOptions) RunVolume(args []string) error {
b := resource.NewBuilder(v.Mapper, v.Typer, resource.ClientMapperFunc(v.RESTClientFactory)).
ContinueOnError().
NamespaceParam(v.DefaultNamespace).DefaultNamespace().
FilenameParam(v.Filenames...).
SelectorParam(v.Selector).
ResourceTypeOrNameArgs(v.All, args...).
Flatten()
one := false
infos, err := b.Do().IntoSingular(&one).Infos()
if err != nil {
return err
}
skipped := 0
for _, info := range infos {
ok, err := v.UpdatePodSpecForObject(info.Object, func(spec *kapi.PodSpec) error {
var e error
switch {
case v.Add:
e = v.addVolumeToSpec(spec)
case v.Remove:
e = v.removeVolumeFromSpec(spec)
case v.List:
e = v.listVolumeForSpec(spec, info)
}
return e
})
if !ok {
skipped++
continue
}
if err != nil {
fmt.Fprintf(v.Writer, "error: %s/%s %v\n", info.Mapping.Resource, info.Name, err)
continue
}
}
if one && skipped == len(infos) {
return fmt.Errorf("the %s %s is not a pod or does not have a pod template", infos[0].Mapping.Resource, infos[0].Name)
}
if v.List {
return nil
}
objects, err := resource.AsVersionedObject(infos, false, v.OutputVersion)
if err != nil {
return err
}
if len(v.Output) != 0 {
p, _, err := kubectl.GetPrinter(v.Output, "")
if err != nil {
return err
}
return p.PrintObj(objects, v.Writer)
}
failed := false
for _, info := range infos {
data, err := info.Mapping.Codec.Encode(info.Object)
if err != nil {
fmt.Fprintf(v.Writer, "Error: %v\n", err)
failed = true
continue
}
obj, err := resource.NewHelper(info.Client, info.Mapping).Update(info.Namespace, info.Name, true, data)
if err != nil {
handlePodUpdateError(v.Writer, err, "volume")
failed = true
continue
}
info.Refresh(obj, true)
fmt.Fprintf(v.Writer, "%s/%s\n", info.Mapping.Resource, info.Name)
}
if failed {
return errExit
}
return nil
}
// RunEnv contains all the necessary functionality for the OpenShift cli env command
func RunEnv(f *clientcmd.Factory, in io.Reader, out io.Writer, cmd *cobra.Command, args []string, envParams, filenames kutil.StringList) error {
resources, envArgs := []string{}, []string{}
first := true
for _, s := range args {
isEnv := strings.Contains(s, "=") || strings.HasSuffix(s, "-")
switch {
case first && isEnv:
first = false
fallthrough
case !first && isEnv:
envArgs = append(envArgs, s)
case first && !isEnv:
resources = append(resources, s)
case !first && !isEnv:
return cmdutil.UsageError(cmd, "all resources must be specified before environment changes: %s", s)
}
}
if len(filenames) == 0 && len(resources) < 1 {
return cmdutil.UsageError(cmd, "one or more resources must be specified as <resource> <name> or <resource>/<name>")
}
containerMatch := cmdutil.GetFlagString(cmd, "containers")
list := cmdutil.GetFlagBool(cmd, "list")
selector := cmdutil.GetFlagString(cmd, "selector")
all := cmdutil.GetFlagBool(cmd, "all")
//overwrite := cmdutil.GetFlagBool(cmd, "overwrite")
resourceVersion := cmdutil.GetFlagString(cmd, "resource-version")
outputFormat := cmdutil.GetFlagString(cmd, "output")
if list && len(outputFormat) > 0 {
return cmdutil.UsageError(cmd, "--list and --output may not be specified together")
}
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
outputVersion := cmdutil.OutputVersion(cmd, clientConfig.Version)
cmdNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
env, remove, err := parseEnv(append(envParams, envArgs...), in)
if err != nil {
return err
}
mapper, typer := f.Object()
b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
ContinueOnError().
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(filenames...).
SelectorParam(selector).
ResourceTypeOrNameArgs(all, resources...).
Flatten()
one := false
infos, err := b.Do().IntoSingular(&one).Infos()
if 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")
}
skipped := 0
for _, info := range infos {
ok, err := f.UpdatePodSpecForObject(info.Object, func(spec *kapi.PodSpec) error {
containers, _ := selectContainers(spec.Containers, containerMatch)
if len(containers) == 0 {
fmt.Fprintf(cmd.Out(), "warning: %s/%s does not have any containers matching %q\n", info.Mapping.Resource, info.Name, containerMatch)
return nil
}
for _, c := range containers {
c.Env = updateEnv(c.Env, env, remove)
if list {
fmt.Fprintf(out, "# %s %s, container %s\n", info.Mapping.Resource, info.Name, c.Name)
for _, env := range c.Env {
// if env.ValueFrom != nil && env.ValueFrom.FieldRef != nil {
// fmt.Fprintf(cmd.Out(), "%s= # calculated from pod %s %s\n", env.Name, env.ValueFrom.FieldRef.FieldPath, env.ValueFrom.FieldRef.APIVersion)
// continue
// }
fmt.Fprintf(out, "%s=%s\n", env.Name, env.Value)
}
}
}
return nil
})
if !ok {
skipped++
continue
}
if err != nil {
fmt.Fprintf(cmd.Out(), "error: %s/%s %v\n", info.Mapping.Resource, info.Name, err)
continue
}
}
if one && skipped == len(infos) {
return fmt.Errorf("the %s %s is not a pod or does not have a pod template", infos[0].Mapping.Resource, infos[0].Name)
}
if list {
return nil
}
objects, err := resource.AsVersionedObject(infos, false, outputVersion)
if err != nil {
return err
}
if len(outputFormat) != 0 {
p, _, err := kubectl.GetPrinter(outputFormat, "")
if err != nil {
return err
}
return p.PrintObj(objects, out)
}
failed := false
for _, info := range infos {
data, err := info.Mapping.Codec.Encode(info.Object)
if err != nil {
fmt.Fprintf(cmd.Out(), "Error: %v\n", err)
failed = true
continue
}
obj, err := resource.NewHelper(info.Client, info.Mapping).Update(info.Namespace, info.Name, true, data)
if err != nil {
handlePodUpdateError(cmd.Out(), err, "environment variables")
failed = true
continue
}
info.Refresh(obj, true)
fmt.Fprintf(out, "%s/%s\n", info.Mapping.Resource, info.Name)
}
if failed {
return errExit
}
return nil
}
// RunEdit contains all the necessary functionality for the OpenShift cli edit command
func RunEdit(fullName string, f *clientcmd.Factory, out io.Writer, cmd *cobra.Command, args []string, filenames util.StringList) 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, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
rmap := &resource.Mapper{
ObjectTyper: typer,
RESTMapper: mapper,
ClientMapper: f.ClientMapperForCommand(),
}
b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(filenames...).
//SelectorParam(selector).
ResourceTypeOrNameArgs(true, args...).
Latest()
if err != nil {
return err
}
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
r := b.Flatten().Do()
infos, err := r.Infos()
if err != nil {
return err
}
defaultVersion := cmdutil.OutputVersion(cmd, clientConfig.Version)
results := editResults{}
for {
obj, err := resource.AsVersionedObject(infos, false, defaultVersion)
if err != nil {
return preservedFile(err, results.file, cmd.Out())
}
// 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, cmd.Out())
}
if err := printer.PrintObj(obj, buf); err != nil {
return preservedFile(err, results.file, cmd.Out())
}
original := buf.Bytes()
// launch the editor
edit := editor.NewDefaultEditor()
edited, file, err := edit.LaunchTempFile("oc-edit-", ext, buf)
if err != nil {
return preservedFile(err, results.file, cmd.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, cmd.Out())
}
if bytes.Equal(original, edited) {
if len(results.edit) > 0 {
preservedFile(nil, file, cmd.Out())
} else {
os.Remove(file)
}
fmt.Fprintln(cmd.Out(), "Edit cancelled, no changes made.")
return nil
}
if !lines {
if len(results.edit) > 0 {
preservedFile(nil, file, cmd.Out())
} else {
os.Remove(file)
}
fmt.Fprintln(cmd.Out(), "Edit cancelled, saved file was empty.")
return nil
}
results = editResults{
file: file,
}
// parse the edited file
updates, err := rmap.InfoForData(edited, "edited-file")
if err != nil {
results.header.reasons = append(results.header.reasons, editReason{
head: fmt.Sprintf("The edited file had a syntax error: %v", err),
})
continue
}
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, cmd.Out())
}
// attempt to calculate a delta for merging conflicts
delta, err := jsonmerge.NewDelta(original, edited)
if err != nil {
glog.V(4).Infof("Unable to calculate diff, no merge is possible: %v", err)
delta = nil
} else {
delta.AddPreconditions(jsonmerge.RequireKeyUnchanged("apiVersion"))
results.delta = delta
results.version = defaultVersion
}
err = visitor.Visit(func(info *resource.Info) error {
data, err := info.Mapping.Codec.Encode(info.Object)
if err != nil {
return err
}
updated, err := resource.NewHelper(info.Client, info.Mapping).Replace(info.Namespace, info.Name, false, data)
if err != nil {
fmt.Fprintln(cmd.Out(), results.AddError(err, info))
return nil
}
info.Refresh(updated, true)
fmt.Fprintf(out, "%s/%s\n", info.Mapping.Resource, info.Name)
return nil
})
if err != nil {
return preservedFile(err, file, cmd.Out())
}
if results.retryable > 0 {
fmt.Fprintf(cmd.Out(), "You can run `%s update -f %s` to try this update again.\n", fullName, file)
return errExit
}
if results.conflict > 0 {
fmt.Fprintf(cmd.Out(), "You must update your local resource version and run `%s update -f %s` to overwrite the remote changes.\n", fullName, file)
return errExit
}
if len(results.edit) == 0 {
if results.notfound == 0 {
os.Remove(file)
} else {
fmt.Fprintf(cmd.Out(), "The edits you made on deleted resources have been saved to %q\n", file)
}
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) error {
selector := cmdutil.GetFlagString(cmd, "selector")
allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
mapper, typer := f.Object()
cmdNamespace, _, err := f.DefaultNamespace()
if err != nil {
return err
}
if len(args) == 0 {
fmt.Fprint(out, `
You must specify the type of resource to get. Valid resource types include:
* pods (aka 'po')
* replicationcontrollers (aka 'rc')
* services
* nodes (aka 'no')
* events (aka 'ev')
* secrets
* limits
* persistentVolumes (aka 'pv')
* persistentVolumeClaims (aka 'pvc')
* quota
`)
return errors.New("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).
SelectorParam(selector).
ResourceTypeOrNameArgs(true, args...).
SingleResourceType().
Do()
if err != nil {
return err
}
mapping, err := r.ResourceMapping()
if err != nil {
return err
}
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).
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
return b.Do().Visit(func(r *resource.Info) error {
printer, err := f.PrinterForMapping(cmd, r.Mapping, allNamespaces)
if err != nil {
return err
}
return printer.PrintObj(r.Object, out)
})
}
func RunExport(f *clientcmd.Factory, exporter Exporter, in io.Reader, out io.Writer, cmd *cobra.Command, args []string, filenames util.StringList) error {
selector := cmdutil.GetFlagString(cmd, "selector")
all := cmdutil.GetFlagBool(cmd, "all")
exact := cmdutil.GetFlagBool(cmd, "exact")
asTemplate := cmdutil.GetFlagString(cmd, "as-template")
raw := cmdutil.GetFlagBool(cmd, "raw")
if exact && raw {
return cmdutil.UsageError(cmd, "--exact and --raw may not both be specified")
}
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
outputVersion := cmdutil.OutputVersion(cmd, clientConfig.Version)
cmdNamespace, explicit, err := f.DefaultNamespace()
if err != nil {
return err
}
mapper, typer := f.Object()
b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
NamespaceParam(cmdNamespace).DefaultNamespace().
FilenameParam(explicit, filenames...).
SelectorParam(selector).
ResourceTypeOrNameArgs(all, args...).
Flatten()
one := false
infos, err := b.Do().IntoSingular(&one).Infos()
if err != nil {
return err
}
if len(infos) == 0 {
return fmt.Errorf("no resources found - nothing to export")
}
if !raw {
newInfos := []*resource.Info{}
errs := []error{}
for _, info := range infos {
if err := exporter.Export(info.Object, exact); err != nil {
if err == ErrExportOmit {
continue
}
errs = append(errs, err)
}
newInfos = append(newInfos, info)
}
if len(errs) > 0 {
return utilerrors.NewAggregate(errs)
}
infos = newInfos
}
var result runtime.Object
if len(asTemplate) > 0 {
objects, err := resource.AsVersionedObjects(infos, outputVersion)
if err != nil {
return err
}
template := &templateapi.Template{
Objects: objects,
}
template.Name = asTemplate
result, err = kapi.Scheme.ConvertToVersion(template, outputVersion)
if err != nil {
return err
}
} else {
object, err := resource.AsVersionedObject(infos, !one, outputVersion)
if err != nil {
return err
}
result = object
}
// use YAML as the default format
outputFormat := cmdutil.GetFlagString(cmd, "output")
templateFile := cmdutil.GetFlagString(cmd, "template")
if len(outputFormat) == 0 && len(templateFile) != 0 {
outputFormat = "template"
}
if len(outputFormat) == 0 {
outputFormat = "yaml"
}
p, _, err := kubectl.GetPrinter(outputFormat, templateFile)
if err != nil {
return err
}
return p.PrintObj(result, out)
}
// 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) error {
selector := cmdutil.GetFlagString(cmd, "selector")
mapper, typer := f.Object()
cmdNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
// 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().
SelectorParam(selector).
ResourceTypeOrNameArgs(true, args...).
SingleResourceType().
Do()
if err != nil {
return err
}
mapping, err := r.ResourceMapping()
if err != nil {
return err
}
printer, err := f.PrinterForMapping(cmd, mapping)
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().
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
return b.Do().Visit(func(r *resource.Info) error {
printer, err := f.PrinterForMapping(cmd, r.Mapping)
if err != nil {
return err
}
return printer.PrintObj(r.Object, out)
})
}
