library/Zend/Service/Amazon/Ec2/Availabilityzones.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_Service_Amazon
  17  * @subpackage Ec2
  18  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  19  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  20  * @version    $Id: Availabilityzones.php 16971 2009-07-22 18:05:45Z mikaelkael $
  21  */
  22
  23 require_once 'Zend/Service/Amazon/Ec2/Abstract.php';
  24
  25 /**
  26  * An Amazon EC2 interface to query which Availibity Zones your account has access to.
  27  *
  28  * @category   Zend
  29  * @package    Zend_Service_Amazon
  30  * @subpackage Ec2
  31  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  32  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  33  */
  34 class Zend_Service_Amazon_Ec2_Availabilityzones extends Zend_Service_Amazon_Ec2_Abstract
  35 {
  36     /**
  37      * Describes availability zones that are currently available to the account
  38      * and their states.
  39      *
  40      * @param string|array $zoneName            Name of an availability zone.
  41      * @return array                            An array that contains all the return items.  Keys: zoneName and zoneState.
  42      */
  43     public function describe($zoneName = null)
  44     {
  45         $params = array();
  46         $params['Action'] = 'DescribeAvailabilityZones';
  47
  48         if(is_array($zoneName) && !empty($zoneName)) {
  49             foreach($zoneName as $k=>$name) {
  50                 $params['ZoneName.' . ($k+1)] = $name;
  51             }
  52         } elseif($zoneName) {
  53             $params['ZoneName.1'] = $zoneName;
  54         }
  55
  56         $response = $this->sendRequest($params);
  57
  58         $xpath  = $response->getXPath();
  59         $nodes  = $xpath->query('//ec2:item');
  60
  61         $return = array();
  62         foreach ($nodes as $k => $node) {
  63             $item = array();
  64             $item['zoneName']   = $xpath->evaluate('string(ec2:zoneName/text())', $node);
  65             $item['zoneState']  = $xpath->evaluate('string(ec2:zoneState/text())', $node);
  66
  67             $return[] = $item;
  68             unset($item);
  69         }
  70
  71         return $return;
  72     }
  73 }