Make downloader plugin configurable

builtin/filedownloader/downloader/downloader.go

@@ -13,9 +13,14 @@ type Downloader struct {
 }
 
 type DownloaderConfig struct {
-	src     string
-	dest    string
-	headers http.Header
+	Src     string
+	Dest    string
+	Headers http.Header
+}
+
+// Config implements Configurable
+func (d *Downloader) Config() (interface{}, error) {
+	return &d.config, nil
 }
 
 func (d *Downloader) DownloadFunc() interface{} {
@@ -23,23 +28,23 @@ func (d *Downloader) DownloadFunc() interface{} {
 }
 
 func (d *Downloader) Download() (err error) {
-	err = getter.Get(d.config.dest, d.config.src, getter.WithGetters(
+	httpGetter := &getter.HttpGetter{
+		Netrc:            false,
+		HeadFirstTimeout: 10 * time.Second,
+		Header:           d.config.Headers,
+		ReadTimeout:      30 * time.Second,
+		MaxBytes:         500000000, // 500 MB
+	}
+	err = getter.Get(d.config.Dest, d.config.Src, getter.WithGetters(
 		map[string]getter.Getter{
-			"http": &getter.HttpGetter{
-				Netrc:            false,
-				HeadFirstTimeout: 10 * time.Second,
-				Header:           d.config.headers,
-				ReadTimeout:      30 * time.Second,
-				MaxBytes:         500000000, // 500 MB
-			},
-			"file": &getter.FileGetter{
-				Copy: true,
-			},
+			"https": httpGetter,
+			"http":  httpGetter,
 		},
 	))
 	return
 }
 
 var (
-	_ component.Downloader = (*Downloader)(nil)
+	_ component.Downloader   = (*Downloader)(nil)
+	_ component.Configurable = (*Downloader)(nil)
 )