Updated.

storage/filesystem.go

@@ -12,6 +12,7 @@ import (
 )
 
 type FileSystem struct {
+	cdn                  string
 	root                 string
 	prefix               string
 	minFreeSize          int64
@@ -35,6 +36,7 @@ func NewFileSystem(cfg config.Config) (Storage, error) {
 	} else {
 		fs.root = root
 	}
+	fs.cdn = cfg.GetString("cdn")
 	fs.prefix = cfg.GetString("prefix", "/")
 	fs.minFreeSize = cfg.GetInt64("min_free_size", 10*GB)
 	fs.allowZeroFile = cfg.GetBool("allow_zero_file", false)
@@ -45,6 +47,10 @@ func NewFileSystem(cfg config.Config) (Storage, error) {
 	return fs, nil
 }
 
+func (fs FileSystem) CDN() string {
+	return fs.cdn
+}
+
 func (fs FileSystem) Root() string {
 	return fs.root
 }

storage/minio.go

@@ -23,6 +23,7 @@ type minioOption struct {
 }
 
 type Minio struct {
+	cdn      string
 	endpoint string
 	secure   bool
 	bucket   string
@@ -70,6 +71,10 @@ func ParseMinioURL(s string) (*minioOption, error) {
 	return &opt, nil
 }
 
+func (mio Minio) CDN() string {
+	return mio.cdn
+}
+
 func (mio Minio) Root() string {
 	return mio.bucket
 }
@@ -147,6 +152,7 @@ func NewMinio(cfg config.Config) (Storage, error) {
 	} else {
 		mio.prefix = s
 	}
+	mio.cdn = cfg.GetString("cdn")
 	if s3Client, e := minio.New(mio.endpoint, mio.access, mio.secret, mio.secure); e != nil {
 		//fmt.Println("minio.New failed:", e)
 		return nil, e

storage/types.go

@@ -27,6 +27,7 @@ type StatInfo interface {
 
 type Storage interface {
 	//Initialize(cfg config.Config) error
+	CDN() string
 	Root() string
 	Prefix() string
 	SaveFile(src interface{}, destination string) (FileObject, error)