Only support SSL dynamic mode

internal/file/filesystem.go

@@ -16,92 +16,5 @@ limitations under the License.
 
 package file
 
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"k8s.io/kubernetes/pkg/util/filesystem"
-)
-
 // ReadWriteByUser defines linux permission to read and write files for the owner user
 const ReadWriteByUser = 0660
-
-// ReadByUserGroup defines linux permission to read files by the user and group owner/s
-const ReadByUserGroup = 0640
-
-// Filesystem is an interface that we can use to mock various filesystem operations
-type Filesystem interface {
-	filesystem.Filesystem
-}
-
-// NewLocalFS implements Filesystem using same-named functions from "os" and "io/ioutil".
-func NewLocalFS() (Filesystem, error) {
-	fs := filesystem.DefaultFs{}
-
-	for _, directory := range directories {
-		err := fs.MkdirAll(directory, ReadWriteByUser)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return fs, nil
-}
-
-// NewFakeFS creates an in-memory filesystem with all the required
-// paths used by the ingress controller.
-// This allows running test without polluting the local machine.
-func NewFakeFS() (Filesystem, error) {
-	osFs := filesystem.DefaultFs{}
-	fakeFs := filesystem.NewFakeFs()
-
-	//TODO: find another way to do this
-	rootFS := filepath.Clean(fmt.Sprintf("%v/%v", os.Getenv("GOPATH"), "src/k8s.io/ingress-nginx/rootfs"))
-
-	var fileList []string
-	err := filepath.Walk(rootFS, func(path string, f os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-
-		if f.IsDir() {
-			return nil
-		}
-
-		file := strings.TrimPrefix(path, rootFS)
-		if file == "" {
-			return nil
-		}
-
-		fileList = append(fileList, file)
-
-		return nil
-	})
-
-	if err != nil {
-		return nil, err
-	}
-
-	for _, file := range fileList {
-		realPath := fmt.Sprintf("%v%v", rootFS, file)
-
-		data, err := osFs.ReadFile(realPath)
-		if err != nil {
-			return nil, err
-		}
-
-		fakeFile, err := fakeFs.Create(file)
-		if err != nil {
-			return nil, err
-		}
-
-		_, err = fakeFile.Write(data)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return fakeFs, nil
-}