how to add custom menu in worpress menu van items

if($current_user->user_login == 'cloudburst') :
function add_login_out_item_to_menu( $items, $args ){
$link = '<li id="log-in-out-link" class="menu-item menu-type-link"><a href="'.get_bloginfo('url').'/allproducts">Shop</a></li>';
return $items.= $link;
}add_filter( 'wp_nav_menu_items', 'add_login_out_item_to_menu', 50, 2 );

endif;