cont

<?php defined('SYSPATH') or die('No direct script access.');

class Controller_Test2 {
	public function action_index()
	{
		// State can be used to bring the user back to where they originally were before the redirect..
		$state = json_decode($this->request->query('state'));

		// Load up the right consumer
		$client = OAuth2_Consumer::factory('mip');

		// Store the client token/refresh token
		$client->exchange_code_for_token($this->request, 1);

		echo 'Have a token now .. try again';
	}
}

gistfile1.aw

<?php defined('SYSPATH') or die('No direct script access.');
/**
 *
 *
 * @category   Controller
 * @author     Managed I.T.
 * @copyright  (c) 2011 Managed I.T.
 */
class Controller_Test extends Controller {

	public function action_index()
	{
		try
		{
			$client = OAuth2_Consumer::factory('mip');

			$request = Request::factory('http://wk01-lmst.managedit.ie/mip-api/api/roles');

			$response = json_decode($client->execute($request, 1));

			echo Debug::vars($response);
		}
		catch (OAuth2_Exception_InvalidToken $e)
		{
			$state = 'some_state_to_be_passed_through_the_authorize_request';

			$this->request->redirect($client->authorize_url($state));
		}
	}

}