func()

in pkg/cmd/get/get.go [204:310]
88 lines of code
34 McCabe index (conditional complexity)

func (o *GetOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args []string) error {
	if len(o.Raw) > 0 {
		if len(args) > 0 {
			return fmt.Errorf("arguments may not be passed when --raw is specified")
		}
		return nil
	}

	var err error
	o.Namespace, o.ExplicitNamespace, err = f.ToRawKubeConfigLoader().Namespace()
	if err != nil {
		return err
	}
	if o.AllNamespaces {
		o.ExplicitNamespace = false
	}

	sortBy, err := cmd.Flags().GetString("sort-by")
	if err != nil {
		return err
	}
	o.Sort = len(sortBy) > 0

	o.NoHeaders = cmdutil.GetFlagBool(cmd, "no-headers")

	// TODO (soltysh): currently we don't support custom columns
	// with server side print. So in these cases force the old behavior.
	outputOption := cmd.Flags().Lookup("output").Value.String()
	if strings.Contains(outputOption, "custom-columns") || outputOption == "yaml" || strings.Contains(outputOption, "json") {
		o.ServerPrint = false
	}

	templateArg := ""
	if o.PrintFlags.TemplateFlags != nil && o.PrintFlags.TemplateFlags.TemplateArgument != nil {
		templateArg = *o.PrintFlags.TemplateFlags.TemplateArgument
	}

	// human readable printers have special conversion rules, so we determine if we're using one.
	if (len(*o.PrintFlags.OutputFormat) == 0 && len(templateArg) == 0) || *o.PrintFlags.OutputFormat == "wide" {
		o.IsHumanReadablePrinter = true
	}

	o.ToPrinter = func(mapping *meta.RESTMapping, outputObjects *bool, withNamespace bool, withKind bool) (printers.ResourcePrinterFunc, error) {
		// make a new copy of current flags / opts before mutating
		printFlags := o.PrintFlags.Copy()

		if mapping != nil {
			if !cmdSpecifiesOutputFmt(cmd) && o.PrintWithOpenAPICols {
				if apiSchema, err := f.OpenAPISchema(); err == nil {
					printFlags.UseOpenAPIColumns(apiSchema, mapping)
				}
			}
			printFlags.SetKind(mapping.GroupVersionKind.GroupKind())
		}
		if withNamespace {
			printFlags.EnsureWithNamespace()
		}
		if withKind {
			printFlags.EnsureWithKind()
		}

		printer, err := printFlags.ToPrinter()
		if err != nil {
			return nil, err
		}
		printer, err = printers.NewTypeSetter(scheme.Scheme).WrapToPrinter(printer, nil)
		if err != nil {
			return nil, err
		}

		if o.Sort {
			printer = &SortingPrinter{Delegate: printer, SortField: sortBy}
		}
		if outputObjects != nil {
			printer = &skipPrinter{delegate: printer, output: outputObjects}
		}
		if o.ServerPrint {
			printer = &TablePrinter{Delegate: printer}
		}
		return printer.PrintObj, nil
	}

	switch {
	case o.Watch || o.WatchOnly:
		if o.Sort {
			fmt.Fprintf(o.IOStreams.ErrOut, "warning: --watch or --watch-only requested, --sort-by will be ignored\n")
		}
	default:
		if len(args) == 0 && cmdutil.IsFilenameSliceEmpty(o.Filenames, o.Kustomize) {
			fmt.Fprintf(o.ErrOut, "You must specify the type of resource to get. %s\n\n", cmdutil.SuggestAPIResources(o.CmdParent))
			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.UsageErrorf(cmd, usageString)
		}
	}

	// openapi printing is mutually exclusive with server side printing
	if o.PrintWithOpenAPICols && o.ServerPrint {
		fmt.Fprintf(o.IOStreams.ErrOut, "warning: --%s requested, --%s will be ignored\n", useOpenAPIPrintColumnFlagLabel, useServerPrintColumns)
	}

	return nil
}