RouteProvider::preLoadRoutes

public RouteProvider::preLoadRoutes($names)

public function preLoadRoutes($names) {
  if (empty($names)) {
    throw new \InvalidArgumentException('You must specify the route names to load');
  }

  $routes_to_load = array_diff($names, array_keys($this->routes), array_keys($this->serializedRoutes));
  if ($routes_to_load) {

    $cid = static::ROUTE_LOAD_CID_PREFIX . hash('sha512', serialize($routes_to_load));
    if ($cache = $this->cache->get($cid)) {
      $routes = $cache->data;
    }
    else {
      try {
        $result = $this->connection->query('SELECT name, route FROM {' . $this->connection->escapeTable($this->tableName) . '} WHERE name IN ( :names[] )', array(':names[]' => $routes_to_load));
        $routes = $result->fetchAllKeyed();

        $this->cache->set($cid, $routes, Cache::PERMANENT, ['routes']);
      }
      catch (\Exception $e) {
        $routes = [];
      }
    }

    $this->serializedRoutes += $routes;
  }
}