<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Service_WindowsAzure

 * @subpackage RetryPolicy

 * @version    $Id: RetryN.php 24593 2012-01-05 20:35:02Z matthew $

 * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/**

 * @see Zend_Service_WindowsAzure_RetryPolicy_RetryPolicyAbstract

 */

require_once 'Zend/Service/WindowsAzure/RetryPolicy/RetryPolicyAbstract.php';

/**

 * @category   Zend

 * @package    Zend_Service_WindowsAzure

 * @subpackage RetryPolicy

 * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Service_WindowsAzure_RetryPolicy_RetryN extends Zend_Service_WindowsAzure_RetryPolicy_RetryPolicyAbstract

{

    /**

     * Number of retries

     * 

     * @var int

     */

    protected $_retryCount = 1;

    /**

     * Interval between retries (in milliseconds)

     * 

     * @var int

     */

    protected $_retryInterval = 0;

    /**

     * Constructor

     * 

     * @param int $count                    Number of retries

     * @param int $intervalBetweenRetries   Interval between retries (in milliseconds)

     */

    public function __construct($count = 1, $intervalBetweenRetries = 0)

    {

        $this->_retryCount = $count;

        $this->_retryInterval = $intervalBetweenRetries;

    }

    /**

     * Execute function under retry policy

     * 

     * @param string|array $function       Function to execute

     * @param array        $parameters     Parameters for function call

     * @return mixed

     */

    public function execute($function, $parameters = array())

    {

        $returnValue = null;

        for ($retriesLeft = $this->_retryCount; $retriesLeft >= 0; --$retriesLeft) {

            try {

                $returnValue = call_user_func_array($function, $parameters);

                return $returnValue;

            } catch (Exception $ex) {

                if ($retriesLeft == 1) {

                    require_once 'Zend/Service/WindowsAzure/RetryPolicy/Exception.php';

                    throw new Zend_Service_WindowsAzure_RetryPolicy_Exception("Exceeded retry count of " . $this->_retryCount . ". " . $ex->getMessage());

                }

                usleep($this->_retryInterval * 1000);

            }

        }

    }

}