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 <?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    $Id$
  * @copyright  Copyright (c) 2005-2015 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) 2005-2015 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);
             }
         }
     }
 }