RouteBuilder::rebuild

public RouteBuilder::rebuild()

public function rebuild() {
  if ($this->building) {
    throw new \RuntimeException('Recursive router rebuild detected.');
  }

  if (!$this->lock->acquire('router_rebuild')) {
    // Wait for another request that is already doing this work.
    // We choose to block here since otherwise the routes might not be
    // available, resulting in a 404.
    $this->lock->wait('router_rebuild');
    return FALSE;
  }

  $this->building = TRUE;

  $collection = new RouteCollection();
  foreach ($this->getRouteDefinitions() as $routes) {
    // The top-level 'routes_callback' is a list of methods in controller
    // syntax, see \Drupal\Core\Controller\ControllerResolver. These methods
    // should return a set of \Symfony\Component\Routing\Route objects, either
    // in an associative array keyed by the route name, which will be iterated
    // over and added to the collection for this provider, or as a new
    // \Symfony\Component\Routing\RouteCollection object, which will be added
    // to the collection.
    if (isset($routes['route_callbacks'])) {
      foreach ($routes['route_callbacks'] as $route_callback) {
        $callback = $this->controllerResolver->getControllerFromDefinition($route_callback);
        if ($callback_routes = call_user_func($callback)) {
          // If a RouteCollection is returned, add the whole collection.
          if ($callback_routes instanceof RouteCollection) {
            $collection->addCollection($callback_routes);
          }
          // Otherwise, add each Route object individually.
          else {
            foreach ($callback_routes as $name => $callback_route) {
              $collection->add($name, $callback_route);
            }
          }
        }
      }
      unset($routes['route_callbacks']);
    }
    foreach ($routes as $name => $route_info) {
      $route_info += array(
        'defaults' => array(),
        'requirements' => array(),
        'options' => array(),
        'host' => NULL,
        'schemes' => array(),
        'methods' => array(),
        'condition' => '',
      );

      $route = new Route($route_info['path'], $route_info['defaults'], $route_info['requirements'], $route_info['options'], $route_info['host'], $route_info['schemes'], $route_info['methods'], $route_info['condition']);
      $collection->add($name, $route);
    }
  }

  // DYNAMIC is supposed to be used to add new routes based upon all the
  // static defined ones.
  $this->dispatcher->dispatch(RoutingEvents::DYNAMIC, new RouteBuildEvent($collection));

  // ALTER is the final step to alter all the existing routes. We cannot stop
  // people from adding new routes here, but we define two separate steps to
  // make it clear.
  $this->dispatcher->dispatch(RoutingEvents::ALTER, new RouteBuildEvent($collection));

  $this->checkProvider->setChecks($collection);

  $this->dumper->addRoutes($collection);
  $this->dumper->dump();

  $this->lock->release('router_rebuild');
  $this->dispatcher->dispatch(RoutingEvents::FINISHED, new Event());
  $this->building = FALSE;

  $this->rebuildNeeded = FALSE;

  return TRUE;
}