FOSUBUserProvider must implement UserProviderInterface - mongodb

Question

We are trying to use FOSUserBundle and HWIOAuthBundle together in the way like it's described there https://gist.github.com/danvbe/4476697
The only difference is that we are using mongodb. This error is fired:
User provider "wf\UserBundle\Document\FOSUBUserProvider" must implement "Symfony\Component\Security\Core\User\UserProviderInterface"
the FOSUBUserProvider is picked from this sample (the src is below). Is not it supposed that HWI\Bundle\OAuthBundle\Security\Core\User\FOSUBUserProvider implements Symfony\Component\Security\Core\User\UserProviderInterface ?
<?php
namespace wf\UserBundle\Document;
use Symfony\Component\Security\Core\User\UserInterface;
use HWI\Bundle\OAuthBundle\OAuth\Response\UserResponseInterface;
use HWI\Bundle\OAuthBundle\Security\Core\User\FOSUBUserProvider as BaseFOSUBUserProvider;
class FOSUBUserProvider extends BaseFOSUBUserProvider
{
/**
* {#inheritDoc}
*/
public function connect(UserInterface $user, UserResponseInterface $response)
{
$property = $this->getProperty($response);
$username = $response->getUsername();
//on connect - get the access token and the user ID
$service = $response->getResourceOwner()->getName();
$setter = 'set'.ucfirst($service);
$setter_id = $setter.'Id';
$setter_token = $setter.'AccessToken';
//we "disconnect" previously connected users
if (null !== $previousUser = $this->userManager->findUserBy(array($property => $username))) {
$previousUser->$setter_id(null);
$previousUser->$setter_token(null);
$this->userManager->updateUser($previousUser);
}
//we connect current user
$user->$setter_id($username);
$user->$setter_token($response->getAccessToken());
$this->userManager->updateUser($user);
}
/**
* {#inheritdoc}
*/
public function loadUserByOAuthUserResponse(UserResponseInterface $response)
{
$username = $response->getUsername();
$user = $this->userManager->findUserBy(array($this->getProperty($response) => $username));
//when the user is registrating
if (null === $user) {
$service = $response->getResourceOwner()->getName();
$setter = 'set'.ucfirst($service);
$setter_id = $setter.'Id';
$setter_token = $setter.'AccessToken';
// create new user here
$user = $this->userManager->createUser();
$user->$setter_id($username);
$user->$setter_token($response->getAccessToken());
//I have set all requested data with the user's username
//modify here with relevant data
$user->setUsername($username);
$user->setEmail($username);
$user->setPassword($username);
$user->setEnabled(true);
$this->userManager->updateUser($user);
return $user;
}
//if user exists - go with the HWIOAuth way
$user = parent::loadUserByOAuthUserResponse($response);
$serviceName = $response->getResourceOwner()->getName();
$setter = 'set' . ucfirst($serviceName) . 'AccessToken';
//update access token
$user->$setter($response->getAccessToken());
return $user;
}
}

Answer 1

FOSUBUserProvider implements AccountConnectorInterface and OAuthAwareUserProviderInterface which are both interfaces so it not possible that they implement UserProviderInterface.
Checking docs in hwioauthbundle I found that OAuthUserProvider is the class that implements UserProviderInterface.
https://github.com/hwi/HWIOAuthBundle/blob/master/Security/Core/User/OAuthUserProvider.php

Answer 2

Using
providers:
fos_userbundle:
id: fos_user.user_manager
in 'security.yml' instead of (custom)
providers:
wf_hwi_provider:
id: wf_user.fos_user_provider
does it