nats-upload: support just cleaning

main.go

@@ -28,11 +28,12 @@ func main() {
 		skipNotify  = flag.Bool("skip-notify", getEnvBool("INPUT_SKIP_NOTIFY", false), "Skip publishing update notification")
 		cleanup     = flag.Int("cleanup", getEnvInt("INPUT_CLEANUP", 0), "Keep only N most recent versions (0 disables cleanup)")
 		cleanupAll  = flag.Bool("cleanup-all", getEnvBool("INPUT_CLEANUP_ALL", false), "Cleanup all binaries, not just current one")
+		justClean   = flag.Bool("just-clean", getEnvBool("INPUT_JUST_CLEAN", false), "Dont upload, just cleanup old versions")
 	)
 	flag.Parse()
 
-	if *directory == "" {
-		log.Fatal("Directory path is required")
+	if *directory == "" && *cleanup == 0 && *justClean == false {
+		log.Fatal("Directory path is required or cleanup must be enabled")
 	}
 
 	ctx := context.Background()
@@ -60,56 +61,58 @@ func main() {
 		log.Printf("Created object store: %s", *bucketName)
 	}
 
-	err = filepath.Walk(*directory, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-
-		if info.IsDir() {
-			return nil
-		}
-
-		data, err := os.ReadFile(path)
-		if err != nil {
-			return fmt.Errorf("failed to read %s: %w", path, err)
-		}
-
-		relPath, err := filepath.Rel(*directory, path)
-		if err != nil {
-			return fmt.Errorf("failed to get relative path: %w", err)
-		}
-
-		objectKey := relPath
-		if *prefix != "" {
-			objectKey = strings.TrimPrefix(relPath, *prefix)
-		}
-
-		objectKey = filepath.ToSlash(objectKey)
-
-		if *binaryName == "" {
-			parts := strings.Split(objectKey, "/")
-			if len(parts) >= 2 {
-				*binaryName = parts[0]
+	if *directory != "" && *justClean == false {
+		err = filepath.Walk(*directory, func(path string, info os.FileInfo, err error) error {
+			if err != nil {
+				return err
 			}
-		}
 
-		log.Printf("Uploading %s as %s (%d bytes)", path, objectKey, len(data))
+			if info.IsDir() {
+				return nil
+			}
+
+			data, err := os.ReadFile(path)
+			if err != nil {
+				return fmt.Errorf("failed to read %s: %w", path, err)
+			}
+
+			relPath, err := filepath.Rel(*directory, path)
+			if err != nil {
+				return fmt.Errorf("failed to get relative path: %w", err)
+			}
+
+			objectKey := relPath
+			if *prefix != "" {
+				objectKey = strings.TrimPrefix(relPath, *prefix)
+			}
+
+			objectKey = filepath.ToSlash(objectKey)
+
+			if *binaryName == "" {
+				parts := strings.Split(objectKey, "/")
+				if len(parts) >= 2 {
+					*binaryName = parts[0]
+				}
+			}
+
+			log.Printf("Uploading %s as %s (%d bytes)", path, objectKey, len(data))
+
+			_, err = store.PutBytes(ctx, objectKey, data)
+			if err != nil {
+				return fmt.Errorf("failed to upload %s: %w", path, err)
+			}
+
+			log.Printf("✓ Uploaded %s", objectKey)
+			return nil
+		})
 
-		_, err = store.PutBytes(ctx, objectKey, data)
 		if err != nil {
-			return fmt.Errorf("failed to upload %s: %w", path, err)
+			log.Fatalf("Failed to upload files: %v", err)
 		}
 
-		log.Printf("✓ Uploaded %s", objectKey)
-		return nil
-	})
-
-	if err != nil {
-		log.Fatalf("Failed to upload files: %v", err)
+		log.Printf("Successfully uploaded all files from %s to NATS object store '%s'", *directory, *bucketName)
 	}
 
-	log.Printf("Successfully uploaded all files from %s to NATS object store '%s'", *directory, *bucketName)
-
 	if *cleanup > 0 {
 		log.Printf("Cleaning up old versions, keeping %d most recent", *cleanup)
 		err = cleanupOldVersions(ctx, store, *binaryName, *cleanup, *cleanupAll)