Add ability to custom handle redirects

.gitignore

@@ -21,6 +21,8 @@
 *.DS_store
 
 .bin
+# VSCode
+.vscode/
 
 # Hugo site
 publishedSite/

api/internal/loader/errors.go

@@ -9,3 +9,12 @@ var (
 	ErrHTTP     = errors.Errorf("HTTP Error")
 	ErrRtNotDir = errors.Errorf("must build at directory")
 )
+
+type RedirectionError struct {
+	NewPath string
+	Msg     string
+}
+
+func (e *RedirectionError) Error() string {
+	return e.Msg
+}

api/internal/loader/fileloader.go

@@ -318,11 +318,19 @@
 	defer resp.Body.Close()
 	// response unsuccessful
 	if resp.StatusCode < 200 || resp.StatusCode > 299 {
-		_, err = git.NewRepoSpecFromURL(path)
-		if err == nil {
-			return nil, errors.Errorf("URL is a git repository")
+		if resp.StatusCode == 300 {
+			var newPath string = resp.Header.Get("Location")
+			return nil, &RedirectionError{
+				Msg:     "Response is redirect",
+				NewPath: newPath,
+			}
+		} else {
+			_, err = git.NewRepoSpecFromURL(path)
+			if err == nil {
+				return nil, errors.Errorf("URL is a git repository")
+			}
+			return nil, fmt.Errorf("%w: status code %d (%s)", ErrHTTP, resp.StatusCode, http.StatusText(resp.StatusCode))
 		}
-		return nil, fmt.Errorf("%w: status code %d (%s)", ErrHTTP, resp.StatusCode, http.StatusText(resp.StatusCode))
 	}
 	content, err := io.ReadAll(resp.Body)
 	return content, errors.Wrap(err)

api/internal/target/kusttarget.go

@@ -423,7 +423,14 @@ func (kt *KustTarget) accumulateResources(
 			if errors.Is(errF, load.ErrHTTP) {
 				return nil, errF
 			}
-			ldr, err := kt.ldr.New(path)
+			var redErr *load.RedirectionError
+			var ldr ifc.Loader
+			var err error
+			if errors.As(errF, &redErr) {
+				ldr, err = kt.ldr.New(redErr.NewPath)
+			} else {
+				ldr, err = kt.ldr.New(path)
+			}
 			if err != nil {
 				// If accumulateFile found malformed YAML and there was a failure
 				// loading the resource as a base, then the resource is likely a