Combine loaderImpl and fileLoader.

pkg/commands/build.go

@@ -70,7 +70,7 @@ func (o *buildOptions) Validate(args []string) error {
 
 // RunBuild runs build command.
 func (o *buildOptions) RunBuild(out io.Writer, fSys fs.FileSystem) error {
-	l := loader.NewLoader(loader.NewFileLoader(fSys))
+	l := loader.NewFileLoader(fSys)
 
 	absPath, err := filepath.Abs(o.kustomizationPath)
 	if err != nil {

pkg/commands/configmap.go

@@ -65,7 +65,7 @@ func newCmdAddConfigMap(fSys fs.FileSystem) *cobra.Command {
 			err = addConfigMap(
 				kustomization, flagsAndArgs,
 				configmapandsecret.NewConfigMapFactory(
-					fSys, loader.NewLoader(loader.NewFileLoader(fSys))))
+					fSys, loader.NewFileLoader(fSys)))
 			if err != nil {
 				return err
 			}

pkg/commands/diff.go

@@ -68,7 +68,7 @@ func (o *diffOptions) Validate(args []string) error {
 // RunDiff gets the differences between Application.MakeCustomizedResMap() and Application.MakeUncustomizedResMap().
 func (o *diffOptions) RunDiff(out, errOut io.Writer, fSys fs.FileSystem) error {
 
-	l := loader.NewLoader(loader.NewFileLoader(fSys))
+	l := loader.NewFileLoader(fSys)
 
 	absPath, err := filepath.Abs(o.kustomizationPath)
 	if err != nil {

pkg/configmapandsecret/configmapfactory_test.go

@@ -136,8 +136,7 @@ func TestConstructConfigMap(t *testing.T) {
 
 	// TODO: all tests should use a FakeFs
 	fSys := fs.MakeRealFS()
-	f := NewConfigMapFactory(fSys,
-		loader.NewLoader(loader.NewFileLoader(fSys)))
+	f := NewConfigMapFactory(fSys, loader.NewFileLoader(fSys))
 	for _, tc := range testCases {
 		cm, err := f.MakeConfigMap(&tc.input)
 		if err != nil {

pkg/internal/loadertest/fakeloader.go

@@ -34,7 +34,7 @@ type FakeLoader struct {
 func NewFakeLoader(initialDir string) FakeLoader {
 	// Create fake filesystem and inject it into initial Loader.
 	fakefs := fs.MakeFakeFS()
-	rootLoader := loader.NewLoader(loader.NewFileLoader(fakefs))
+	rootLoader := loader.NewFileLoader(fakefs)
 	ldr, _ := rootLoader.New(initialDir)
 	return FakeLoader{fs: fakefs, delegate: ldr}
 }

pkg/loader/fileloader.go

@@ -26,32 +26,59 @@ import (
 
 const currentDir = "."
 
-// FileLoader loads files from a file system.
-type FileLoader struct {
-	fs fs.FileSystem
+// fileLoader loads files from a file system.
+type fileLoader struct {
+	root string
+	fSys fs.FileSystem
 }
 
-// NewFileLoader returns a new FileLoader.
-func NewFileLoader(fs fs.FileSystem) *FileLoader {
-	return &FileLoader{fs: fs}
+// NewFileLoader returns a new fileLoader.
+func NewFileLoader(fSys fs.FileSystem) *fileLoader {
+	return newFileLoaderAtRoot("", fSys)
+}
+
+// newFileLoaderAtRoot returns a new fileLoader with given root.
+func newFileLoaderAtRoot(root string, fs fs.FileSystem) *fileLoader {
+	return &fileLoader{root: root, fSys: fs}
+}
+
+// Root returns the root location for this Loader.
+func (l *fileLoader) Root() string {
+	return l.root
+}
+
+// Returns a new Loader rooted at newRoot. "newRoot" MUST be
+// a directory (not a file). The directory can have a trailing
+// slash or not.
+// Example: "/home/seans/project" or "/home/seans/project/"
+// NOT "/home/seans/project/file.yaml".
+func (l *fileLoader) New(newRoot string) (Loader, error) {
+	if !l.IsAbsPath(l.root, newRoot) {
+		return nil, fmt.Errorf("Not abs path: l.root='%s', loc='%s'\n", l.root, newRoot)
+	}
+	root, err := l.fullLocation(l.root, newRoot)
+	if err != nil {
+		return nil, err
+	}
+	return newFileLoaderAtRoot(root, l.fSys), nil
 }
 
 // IsAbsPath return true if the location calculated with the root
 // and location params a full file path.
-func (l *FileLoader) IsAbsPath(root string, location string) bool {
-	fullFilePath, err := l.FullLocation(root, location)
+func (l *fileLoader) IsAbsPath(root string, location string) bool {
+	fullFilePath, err := l.fullLocation(root, location)
 	if err != nil {
 		return false
 	}
 	return filepath.IsAbs(fullFilePath)
 }
 
-// FullLocation returns some notion of a full path.
+// fullLocation returns some notion of a full path.
 // If location is a full file path, then ignore root. If location is relative, then
 // join the root path with the location path. Either root or location can be empty,
 // but not both. Special case for ".": Expands to current working directory.
 // Example: "/home/seans/project", "subdir/bar" -> "/home/seans/project/subdir/bar".
-func (l *FileLoader) FullLocation(root string, location string) (string, error) {
+func (l *fileLoader) fullLocation(root string, location string) (string, error) {
 	// First, validate the parameters
 	if len(root) == 0 && len(location) == 0 {
 		return "", fmt.Errorf("unable to calculate full location: root and location empty")
@@ -74,12 +101,21 @@ func (l *FileLoader) FullLocation(root string, location string) (string, error)
 
 // Load returns the bytes from reading a file at fullFilePath.
 // Implements the Loader interface.
-func (l *FileLoader) Load(p string) ([]byte, error) {
-	return l.fs.ReadFile(p)
+func (l *fileLoader) Load(location string) ([]byte, error) {
+	fullLocation, err := l.fullLocation(l.root, location)
+	if err != nil {
+		fmt.Printf("Trouble in fulllocation: %v\n", err)
+		return nil, err
+	}
+	return l.fSys.ReadFile(fullLocation)
 }
 
 // GlobLoad returns the map from path to bytes from reading a glob path.
 // Implements the Loader interface.
-func (l *FileLoader) GlobLoad(p string) (map[string][]byte, error) {
-	return l.fs.ReadFiles(p)
+func (l *fileLoader) GlobLoad(location string) (map[string][]byte, error) {
+	fullLocation, err := l.fullLocation(l.root, location)
+	if err != nil {
+		return nil, err
+	}
+	return l.fSys.ReadFiles(fullLocation)
 }

pkg/loader/loader_test.go → pkg/loader/fileloader_test.go

@@ -24,18 +24,14 @@ import (
 	"github.com/kubernetes-sigs/kustomize/pkg/fs"
 )
 
-func initializeRootLoader(fakefs fs.FileSystem) Loader {
-	return NewLoader(NewFileLoader(fakefs))
-}
-
 func TestLoader_Root(t *testing.T) {
 
 	// Initialize the fake file system and the root loader.
 	fakefs := fs.MakeFakeFS()
 	fakefs.WriteFile("/home/seans/project/file.yaml", []byte("Unused"))
 	fakefs.WriteFile("/home/seans/project/subdir/file.yaml", []byte("Unused"))
 	fakefs.WriteFile("/home/seans/project2/file.yaml", []byte("Unused"))
-	rootLoader := initializeRootLoader(fakefs)
+	rootLoader := NewFileLoader(fakefs)
 
 	_, err := rootLoader.New("")
 	if err == nil {
@@ -89,7 +85,7 @@ func TestLoader_Load(t *testing.T) {
 	fakefs.WriteFile("/home/seans/project/file.yaml", []byte("This is a yaml file"))
 	fakefs.WriteFile("/home/seans/project/subdir/file.yaml", []byte("Subdirectory file content"))
 	fakefs.WriteFile("/home/seans/project2/file.yaml", []byte("This is another yaml file"))
-	rootLoader := initializeRootLoader(fakefs)
+	rootLoader := NewFileLoader(fakefs)
 
 	loader, err := rootLoader.New("/home/seans/project")
 	if err != nil {

pkg/loader/loader.go

@@ -17,8 +17,6 @@ limitations under the License.
 // Package loader has a data loading interface and various implementations.
 package loader
 
-import "fmt"
-
 // Loader interface exposes methods to read bytes.
 type Loader interface {
 	// Root returns the root location for this Loader.
@@ -30,60 +28,3 @@ type Loader interface {
 	// GlobLoad returns the bytes read from a glob path or an error.
 	GlobLoad(location string) (map[string][]byte, error)
 }
-
-// Private implementation of Loader interface.
-type loaderImpl struct {
-	root    string
-	fLoader *FileLoader
-}
-
-const emptyRoot = ""
-
-// NewLoader initializes the first loader with the supported fLoader.
-func NewLoader(fl *FileLoader) Loader {
-	return &loaderImpl{root: emptyRoot, fLoader: fl}
-}
-
-// Root returns the root location for this Loader.
-func (l *loaderImpl) Root() string {
-	return l.root
-}
-
-// Returns a new Loader rooted at newRoot. "newRoot" MUST be
-// a directory (not a file). The directory can have a trailing
-// slash or not.
-// Example: "/home/seans/project" or "/home/seans/project/"
-// NOT "/home/seans/project/file.yaml".
-func (l *loaderImpl) New(newRoot string) (Loader, error) {
-	if !l.fLoader.IsAbsPath(l.root, newRoot) {
-		return nil, fmt.Errorf("Not abs path: l.root='%s', loc='%s'\n", l.root, newRoot)
-	}
-	root, err := l.fLoader.FullLocation(l.root, newRoot)
-	if err != nil {
-		return nil, err
-	}
-	return &loaderImpl{root: root, fLoader: l.fLoader}, nil
-}
-
-// Load returns all the bytes read from location or an error.
-// "location" can be an absolute path, or if relative, full location is
-// calculated from the Root().
-func (l *loaderImpl) Load(location string) ([]byte, error) {
-	fullLocation, err := l.fLoader.FullLocation(l.root, location)
-	if err != nil {
-		fmt.Printf("Trouble in fulllocation: %v\n", err)
-		return nil, err
-	}
-	return l.fLoader.Load(fullLocation)
-}
-
-// GlobLoad returns a map from path to bytes read from the location or an error.
-// "location" can be an absolute path, or if relative, full location is
-// calculated from the Root().
-func (l *loaderImpl) GlobLoad(location string) (map[string][]byte, error) {
-	fullLocation, err := l.fLoader.FullLocation(l.root, location)
-	if err != nil {
-		return nil, err
-	}
-	return l.fLoader.GlobLoad(fullLocation)
-}