class Route

class Route extends ProcessPluginBase implements ContainerFactoryPluginInterface {
    
    /**
     * The path validator service.
     *
     * @var \Drupal\Core\Path\PathValidatorInterface
     */
    protected $pathValidator;
    
    /**
     * {@inheritdoc}
     */
    public function __construct(array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration, PathValidatorInterface $path_validator) {
        parent::__construct($configuration, $plugin_id, $plugin_definition);
        $this->migration = $migration;
        $this->pathValidator = $path_validator;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition, MigrationInterface $migration = NULL) {
        return new static($configuration, $plugin_id, $plugin_definition, $migration, $container->get('path.validator'));
    }
    
    /**
     * {@inheritdoc}
     *
     * Set the destination route information based on the source link_path.
     */
    public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
        if (is_string($value)) {
            $link_path = $value;
            $options = [];
        }
        else {
            list($link_path, $options) = $value;
        }
        $extracted = $this->pathValidator
            ->getUrlIfValidWithoutAccessCheck($link_path);
        $route = [];
        if ($extracted) {
            if ($extracted->isExternal()) {
                $route['route_name'] = NULL;
                $route['route_parameters'] = [];
                $route['options'] = $options;
                $route['url'] = $extracted->getUri();
            }
            else {
                $route['route_name'] = $extracted->getRouteName();
                $route['route_parameters'] = $extracted->getRouteParameters();
                $route['options'] = $extracted->getOptions();
                if (isset($options['query'])) {
                    // If the querystring is stored as a string (as in D6), convert it
                    // into an array.
                    if (is_string($options['query'])) {
                        parse_str($options['query'], $old_query);
                    }
                    else {
                        $old_query = $options['query'];
                    }
                    $options['query'] = $route['options']['query'] + $old_query;
                    unset($route['options']['query']);
                }
                $route['options'] = $route['options'] + $options;
                $route['url'] = NULL;
            }
        }
        return $route;
    }

}