// RunConvert implements the generic Convert command
func (o *ConvertOptions) RunConvert() error {
r := o.builder.Do()
err := r.Err()
if err != nil {
return err
}
singular := false
infos, err := r.IntoSingular(&singular).Infos()
if err != nil {
return err
}
if len(infos) == 0 {
return fmt.Errorf("no objects passed to convert")
}
objects, err := resource.AsVersionedObject(infos, !singular, o.outputVersion, o.encoder)
if err != nil {
return err
}
if meta.IsListType(objects) {
_, items, err := cmdutil.FilterResourceList(objects, nil, nil)
if err != nil {
return err
}
filteredObj, err := cmdutil.ObjectListToVersionedObject(items, o.outputVersion)
if err != nil {
return err
}
return o.printer.PrintObj(filteredObj, o.out)
}
return o.printer.PrintObj(objects, o.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, errOut io.Writer, cmd *cobra.Command, args []string, options *GetOptions) error {
if len(options.Raw) > 0 {
restClient, err := f.RESTClient()
if err != nil {
return err
}
stream, err := restClient.Get().RequestURI(options.Raw).Stream()
if err != nil {
return err
}
defer stream.Close()
_, err = io.Copy(out, stream)
if err != nil && err != io.EOF {
return err
}
return nil
}
selector := cmdutil.GetFlagString(cmd, "selector")
allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
showKind := cmdutil.GetFlagBool(cmd, "show-kind")
mapper, typer := f.Object()
printAll := false
filterFuncs := f.DefaultResourceFilterFunc()
filterOpts := f.DefaultResourceFilterOptions(cmd, allNamespaces)
cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
if err != nil {
return err
}
if allNamespaces {
enforceNamespace = false
}
if len(args) == 0 && cmdutil.IsFilenameEmpty(options.Filenames) {
fmt.Fprint(errOut, "You must specify the type of resource to get. ", valid_resources)
fullCmdName := cmd.Parent().CommandPath()
usageString := "Required resource not specified."
if len(fullCmdName) > 0 && cmdutil.IsSiblingCommandExists(cmd, "explain") {
usageString = fmt.Sprintf("%s\nUse \"%s explain <resource>\" for a detailed description of that resource (e.g. %[2]s explain pods).", usageString, fullCmdName)
}
return cmdutil.UsageError(cmd, usageString)
}
// determine if args contains "all"
for _, a := range args {
if a == "all" {
printAll = true
break
}
}
// always show resources when getting by name or filename
argsHasNames, err := resource.HasNames(args)
if err != nil {
return err
}
if len(options.Filenames) > 0 || argsHasNames {
cmd.Flag("show-all").Value.Set("true")
}
export := cmdutil.GetFlagBool(cmd, "export")
// 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, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, &options.FilenameOptions).
SelectorParam(selector).
ExportParam(export).
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
}
// watching from resourceVersion 0, starts the watch at ~now and
// will return an initial watch event. Starting form ~now, rather
// the rv of the object will insure that we start the watch from
// inside the watch window, which the rv of the object might not be.
rv := "0"
isList := meta.IsListType(obj)
if isList {
// the resourceVersion of list objects is ~now but won't return
// an initial watch event
rv, err = mapping.MetadataAccessor.ResourceVersion(obj)
if err != nil {
return err
}
}
// print the current object
filteredResourceCount := 0
if !isWatchOnly {
if err := printer.PrintObj(obj, out); err != nil {
return fmt.Errorf("unable to output the provided object: %v", err)
}
filteredResourceCount++
cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, errOut, filterOpts)
}
// print watched changes
w, err := r.Watch(rv)
if err != nil {
return err
}
first := true
filteredResourceCount = 0
intr := interrupt.New(nil, w.Stop)
intr.Run(func() error {
_, err := watch.Until(0, w, func(e watch.Event) (bool, error) {
if !isList && first {
// drop the initial watch event in the single resource case
first = false
return false, nil
}
err := printer.PrintObj(e.Object, out)
if err != nil {
return false, err
}
filteredResourceCount++
cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, errOut, filterOpts)
return false, nil
})
return err
})
return nil
}
r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
FilenameParam(enforceNamespace, &options.FilenameOptions).
SelectorParam(selector).
ExportParam(export).
ResourceTypeOrNameArgs(true, args...).
ContinueOnError().
Latest().
Flatten().
Do()
err = r.Err()
if err != nil {
return err
}
printer, generic, err := cmdutil.PrinterForCommand(cmd)
if err != nil {
return err
}
if generic {
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
// the outermost object will be converted to the output-version, but inner
// objects can use their mappings
version, err := cmdutil.OutputVersion(cmd, clientConfig.GroupVersion)
if err != nil {
return err
}
var errs []error
singular := false
infos, err := r.IntoSingular(&singular).Infos()
if err != nil {
if singular {
return err
}
errs = append(errs, err)
}
if len(infos) == 0 {
outputEmptyListWarning(errOut)
}
res := ""
if len(infos) > 0 {
res = infos[0].ResourceMapping().Resource
}
obj, err := resource.AsVersionedObject(infos, !singular, version, f.JSONEncoder())
if err != nil {
return err
}
isList := meta.IsListType(obj)
if isList {
filteredResourceCount, items, err := cmdutil.FilterResourceList(obj, filterFuncs, filterOpts)
if err != nil {
return err
}
filteredObj, err := cmdutil.ObjectListToVersionedObject(items, version)
if err != nil {
return err
}
if err := printer.PrintObj(filteredObj, out); err != nil {
errs = append(errs, err)
}
cmdutil.PrintFilterCount(filteredResourceCount, res, errOut, filterOpts)
return utilerrors.Reduce(utilerrors.Flatten(utilerrors.NewAggregate(errs)))
}
filteredResourceCount := 0
if isFiltered, err := filterFuncs.Filter(obj, filterOpts); !isFiltered {
if err != nil {
glog.V(2).Infof("Unable to filter resource: %v", err)
} else if err := printer.PrintObj(obj, out); err != nil {
errs = append(errs, err)
}
} else if isFiltered {
filteredResourceCount++
}
cmdutil.PrintFilterCount(filteredResourceCount, res, errOut, filterOpts)
return utilerrors.Reduce(utilerrors.Flatten(utilerrors.NewAggregate(errs)))
}
allErrs := []error{}
infos, err := r.Infos()
if err != nil {
allErrs = append(allErrs, err)
}
if len(infos) == 0 {
outputEmptyListWarning(errOut)
}
objs := make([]runtime.Object, len(infos))
for ix := range infos {
objs[ix] = infos[ix].Object
}
sorting, err := cmd.Flags().GetString("sort-by")
if err != nil {
return err
}
var sorter *kubectl.RuntimeSort
if len(sorting) > 0 && len(objs) > 1 {
clientConfig, err := f.ClientConfig()
if err != nil {
return err
}
version, err := cmdutil.OutputVersion(cmd, clientConfig.GroupVersion)
if err != nil {
return err
}
for ix := range infos {
objs[ix], err = infos[ix].Mapping.ConvertToVersion(infos[ix].Object, version)
if err != nil {
allErrs = append(allErrs, err)
continue
}
}
// TODO: questionable
if sorter, err = kubectl.SortObjects(f.Decoder(true), objs, sorting); err != nil {
return err
}
}
// use the default printer for each object
printer = nil
var lastMapping *meta.RESTMapping
w := kubectl.GetNewTabWriter(out)
filteredResourceCount := 0
if cmdutil.MustPrintWithKinds(objs, infos, sorter, printAll) {
showKind = true
}
for ix := range objs {
var mapping *meta.RESTMapping
var original runtime.Object
if sorter != nil {
mapping = infos[sorter.OriginalPosition(ix)].Mapping
original = infos[sorter.OriginalPosition(ix)].Object
} else {
mapping = infos[ix].Mapping
original = infos[ix].Object
}
if printer == nil || lastMapping == nil || mapping == nil || mapping.Resource != lastMapping.Resource {
if printer != nil {
w.Flush()
cmdutil.PrintFilterCount(filteredResourceCount, lastMapping.Resource, errOut, filterOpts)
}
printer, err = f.PrinterForMapping(cmd, mapping, allNamespaces)
if err != nil {
allErrs = append(allErrs, err)
continue
}
// add linebreak between resource groups (if there is more than one)
// skip linebreak above first resource group
noHeaders := cmdutil.GetFlagBool(cmd, "no-headers")
if lastMapping != nil && !noHeaders {
fmt.Fprintf(errOut, "%s\n", "")
}
lastMapping = mapping
}
// filter objects if filter has been defined for current object
if isFiltered, err := filterFuncs.Filter(original, filterOpts); isFiltered {
if err == nil {
filteredResourceCount++
continue
}
allErrs = append(allErrs, err)
}
if resourcePrinter, found := printer.(*kubectl.HumanReadablePrinter); found {
resourceName := resourcePrinter.GetResourceKind()
if mapping != nil {
if resourceName == "" {
resourceName = mapping.Resource
}
if alias, ok := kubectl.ResourceShortFormFor(mapping.Resource); ok {
resourceName = alias
} else if resourceName == "" {
resourceName = "none"
}
} else {
resourceName = "none"
}
if showKind {
resourcePrinter.EnsurePrintWithKind(resourceName)
}
if err := printer.PrintObj(original, w); err != nil {
allErrs = append(allErrs, err)
}
continue
}
if err := printer.PrintObj(original, w); err != nil {
allErrs = append(allErrs, err)
continue
}
}
w.Flush()
if printer != nil && lastMapping != nil {
cmdutil.PrintFilterCount(filteredResourceCount, lastMapping.Resource, errOut, filterOpts)
}
return utilerrors.NewAggregate(allErrs)
}