CheckProviderInterface.php

<?php

namespace Drupal\Core\Access;

use Symfony\Component\Routing\RouteCollection;

/**
 * Provides the available access checkers by service IDs.
 *
 * Access checker services are added by ::addCheckService calls and are loaded
 * by ::loadCheck.
 *
 * The checker provider service and the actual checking is separated in order
 * to not require the full access manager on route build time.
 */
interface CheckProviderInterface {
    
    /**
     * For each route, saves a list of applicable access checks to the route.
     *
     * @param \Symfony\Component\Routing\RouteCollection $routes
     *   A collection of routes to apply checks to.
     */
    public function setChecks(RouteCollection $routes);
    
    /**
     * Registers a new AccessCheck by service ID.
     *
     * @param string $service_id
     *   The ID of the service in the Container that provides a check.
     * @param string $service_method
     *   The method to invoke on the service object for performing the check.
     * @param array $applies_checks
     *   (optional) An array of route requirement keys the checker service applies
     *   to.
     * @param bool $needs_incoming_request
     *   (optional) True if access-check method only acts on an incoming request.
     */
    public function addCheckService($service_id, $service_method, array $applies_checks = [], $needs_incoming_request = FALSE);
    
    /**
     * Lazy-loads access check services.
     *
     * @param string $service_id
     *   The service id of the access check service to load.
     *
     * @return callable
     *   A callable access check.
     *
     * @throws \InvalidArgumentException
     *   Thrown when the service hasn't been registered in addCheckService().
     * @throws \Drupal\Core\Access\AccessException
     *   Thrown when the service doesn't implement the required interface.
     */
    public function loadCheck($service_id);
    
    /**
     * A list of checks that needs the request.
     *
     * @return array
     */
    public function getChecksNeedRequest();

}