WordPress at a glance
action is not described

media_upload_file action-hook . WC 1.0

Run a filter when uploading a downloadable product.

Usage

add_action( 'media_upload_file', 'action_function_name_8591' );
function action_function_name_8591(){
	// action...
}

Where the hook is called

WC_Admin_Post_Types::woocommerce_media_upload_downloadable_product()
media_upload_file

Where in WP core the hook is used WooCommerce

Usage not found.