Fmt with subpackages

cmd/config/internal/commands/fmt.go

@@ -4,7 +4,11 @@
 package commands
 
 import (
+	"fmt"
+	"io"
+
 	"github.com/spf13/cobra"
+	"sigs.k8s.io/kustomize/cmd/config/ext"
 	"sigs.k8s.io/kustomize/cmd/config/internal/generateddocs/commands"
 	"sigs.k8s.io/kustomize/kyaml/kio"
 	"sigs.k8s.io/kustomize/kyaml/kio/filters"
@@ -33,6 +37,8 @@ formatting substitution verbs {'%n': 'metadata.name', '%s': 'metadata.namespace'
 		`if true, override existing filepath annotations.`)
 	c.Flags().BoolVar(&r.UseSchema, "use-schema", false,
 		`if true, uses openapi resource schema to format resources.`)
+	c.Flags().BoolVarP(&r.RecurseSubPackages, "recurse-subpackages", "R", false,
+		"formats resource files recursively in all the nested subpackages")
 	r.Command = c
 	return r
 }
@@ -43,12 +49,13 @@ func FmtCommand(name string) *cobra.Command {
 
 // FmtRunner contains the run function
 type FmtRunner struct {
-	Command         *cobra.Command
-	FilenamePattern string
-	SetFilenames    bool
-	KeepAnnotations bool
-	Override        bool
-	UseSchema       bool
+	Command            *cobra.Command
+	FilenamePattern    string
+	SetFilenames       bool
+	KeepAnnotations    bool
+	Override           bool
+	UseSchema          bool
+	RecurseSubPackages bool
 }
 
 func (r *FmtRunner) preRunE(c *cobra.Command, args []string) error {
@@ -59,17 +66,6 @@ func (r *FmtRunner) preRunE(c *cobra.Command, args []string) error {
 }
 
 func (r *FmtRunner) runE(c *cobra.Command, args []string) error {
-	f := []kio.Filter{filters.FormatFilter{
-		UseSchema: r.UseSchema,
-	}}
-
-	// format with file names
-	if r.SetFilenames {
-		f = append(f, &filters.FileSetter{
-			FilenamePattern: r.FilenamePattern,
-			Override:        r.Override,
-		})
-	}
 
 	// format stdin if there are no args
 	if len(args) == 0 {
@@ -79,20 +75,64 @@ func (r *FmtRunner) runE(c *cobra.Command, args []string) error {
 			KeepReaderAnnotations: r.KeepAnnotations,
 		}
 		return handleError(c, kio.Pipeline{
-			Inputs: []kio.Reader{rw}, Filters: f, Outputs: []kio.Writer{rw}}.Execute())
+			Inputs: []kio.Reader{rw}, Filters: r.fmtFilters(), Outputs: []kio.Writer{rw}}.Execute())
 	}
 
-	for i := range args {
-		path := args[i]
-		rw := &kio.LocalPackageReadWriter{
-			NoDeleteFiles:         true,
-			PackagePath:           path,
-			KeepReaderAnnotations: r.KeepAnnotations}
-		err := kio.Pipeline{
-			Inputs: []kio.Reader{rw}, Filters: f, Outputs: []kio.Writer{rw}}.Execute()
+	for _, rootPkgPath := range args {
+		e := executeCmdOnPkgs{
+			writer:             c.OutOrStdout(),
+			needOpenAPI:        false,
+			recurseSubPackages: r.RecurseSubPackages,
+			cmdRunner:          r,
+			rootPkgPath:        rootPkgPath,
+		}
+
+		err := e.execute()
 		if err != nil {
-			return handleError(c, err)
+			return err
 		}
 	}
 	return nil
 }
+
+func (r *FmtRunner) executeCmd(w io.Writer, pkgPath string) error {
+	openAPIFileName, err := ext.OpenAPIFileName()
+	if err != nil {
+		return err
+	}
+
+	rw := &kio.LocalPackageReadWriter{
+		NoDeleteFiles:         true,
+		PackagePath:           pkgPath,
+		KeepReaderAnnotations: r.KeepAnnotations, PackageFileName: openAPIFileName}
+	err = kio.Pipeline{
+		Inputs: []kio.Reader{rw}, Filters: r.fmtFilters(), Outputs: []kio.Writer{rw}}.Execute()
+
+	if err != nil {
+		// return err if RecurseSubPackages is false
+		if !r.RecurseSubPackages {
+			return err
+		} else {
+			// print error message and continue if RecurseSubPackages is true
+			fmt.Fprintf(w, "%s in package %q\n", err.Error(), pkgPath)
+		}
+	} else {
+		fmt.Fprintf(w, "formatted resource files in package %q\n", pkgPath)
+	}
+	return nil
+}
+
+func (r *FmtRunner) fmtFilters() []kio.Filter {
+	fmtFilters := []kio.Filter{filters.FormatFilter{
+		UseSchema: r.UseSchema,
+	}}
+
+	// format with file names
+	if r.SetFilenames {
+		fmtFilters = append(fmtFilters, &filters.FileSetter{
+			FilenamePattern: r.FilenamePattern,
+			Override:        r.Override,
+		})
+	}
+	return fmtFilters
+}