url: update azure blob fetching to fallback on HTTP fetch on failure

fixes:coreos#2011
prestist · Feb 5, 2025 · 6754f74 · 6754f74
1 parent af19b7d
commit 6754f74
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/internal/resource/url.go b/internal/resource/url.go
@@ -153,6 +153,11 @@ func (f *Fetcher) FetchToBuffer(u url.URL, opts FetchOptions) ([]byte, error) {
 	case "http", "https":
 		if strings.HasSuffix(u.Host, ".blob.core.windows.net") {
 			err = f.fetchFromAzureBlob(u, dest, opts)
+			if err != nil {
+				f.Logger.Info("could not authenticate using azure default credentials: %v", err)
+				f.Logger.Debug("falling back to fetchFromHTTP")
+				err = f.fetchFromHTTP(u, dest, opts)
+			}
 		} else {
 			err = f.fetchFromHTTP(u, dest, opts)
 		}
@@ -217,7 +222,13 @@ func (f *Fetcher) Fetch(u url.URL, dest *os.File, opts FetchOptions) error {
 	switch u.Scheme {
 	case "http", "https":
 		if strings.HasSuffix(u.Host, ".blob.core.windows.net") {
-			return f.fetchFromAzureBlob(u, dest, opts)
+			err := f.fetchFromAzureBlob(u, dest, opts)
+			if err != nil {
+				f.Logger.Info("could not authenticate using azure default credentials: %v", err)
+				f.Logger.Debug("falling back to fetchFromHTTP")
+				err = f.fetchFromHTTP(u, dest, opts)
+			}
+			return err
 		}
 		return f.fetchFromHTTP(u, dest, opts)
 	case "tftp":