/**
* Loads the number of allowed requests and the corresponding timestamp from a persistent storage.
* @param Request $request the current request
* @param Action $action the action to be executed
* @return array an array of two elements. The first element is the number of allowed requests,
* and the second element is the corresponding UNIX timestamp.
*/
public function loadAllowance($request, $action)
{
GrantType::check($request->post('grant_type'), GrantType::GRANT_TYPE_AUTHORIZATION_CODE);
Client::checkSecret(Client::checkId($request->post('client_id')), $request->post('client_secret'));
AuthorizationCode::check($request->post('code'), $request->post('redirect_uri'));
}
