/**
* @param AdminInterface $admin
*
* @return mixed
* @throws \RuntimeException
*/
public function load(AdminInterface $admin)
{
$filename = $this->cacheFolder . '/route_' . md5($admin->getCode());
$cache = new ConfigCache($filename, $this->debug);
if (!$cache->isFresh()) {
$resources = array();
$routes = array();
$reflection = new \ReflectionObject($admin);
$resources[] = new FileResource($reflection->getFileName());
if (!$admin->getRoutes()) {
throw new \RuntimeException('Invalid data type, Admin::getRoutes must return a RouteCollection');
}
foreach ($admin->getRoutes()->getElements() as $code => $route) {
$routes[$code] = $route->getDefault('_sonata_name');
}
if (!is_array($admin->getExtensions())) {
throw new \RuntimeException('extensions must be an array');
}
foreach ($admin->getExtensions() as $extension) {
$reflection = new \ReflectionObject($extension);
$resources[] = new FileResource($reflection->getFileName());
}
$cache->write(serialize($routes), $resources);
}
return unserialize(file_get_contents($filename));
}
