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import v1.1.0_beta1 | 2009-08-21

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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_Amazon
* @subpackage Ec2
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
require_once 'Zend/Service/Amazon/Ec2/Abstract.php';
/**
* An Amazon EC2 interface to create, describe, attach, detach and delete Elastic Block
* Storage Volumes and Snaphsots.
*
* @category Zend
* @package Zend_Service_Amazon
* @subpackage Ec2
* @copyright Copyright (c) 22005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Service_Amazon_Ec2_Ebs extends Zend_Service_Amazon_Ec2_Abstract
{
/**
* Creates a new Amazon EBS volume that you can mount from any Amazon EC2 instance.
*
* You must specify an availability zone when creating a volume. The volume and
* any instance to which it attaches must be in the same availability zone.
*
* @param string $size The size of the volume, in GiB.
* @param string $availabilityZone The availability zone in which to create the new volume.
* @return array
*/
public function createNewVolume($size, $availabilityZone)
{
$params = array();
$params['Action'] = 'CreateVolume';
$params['AvailabilityZone'] = $availabilityZone;
$params['Size'] = $size;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = array();
$return['volumeId'] = $xpath->evaluate('string(//ec2:volumeId/text())');
$return['size'] = $xpath->evaluate('string(//ec2:size/text())');
$return['status'] = $xpath->evaluate('string(//ec2:status/text())');
$return['createTime'] = $xpath->evaluate('string(//ec2:createTime/text())');
$return['availabilityZone'] = $xpath->evaluate('string(//ec2:availabilityZone/text())');
return $return;
}
/**
* Creates a new Amazon EBS volume that you can mount from any Amazon EC2 instance.
*
* You must specify an availability zone when creating a volume. The volume and
* any instance to which it attaches must be in the same availability zone.
*
* @param string $snapshotId The snapshot from which to create the new volume.
* @param string $availabilityZone The availability zone in which to create the new volume.
* @return array
*/
public function createVolumeFromSnapshot($snapshotId, $availabilityZone)
{
$params = array();
$params['Action'] = 'CreateVolume';
$params['AvailabilityZone'] = $availabilityZone;
$params['SnapshotId'] = $snapshotId;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = array();
$return['volumeId'] = $xpath->evaluate('string(//ec2:volumeId/text())');
$return['size'] = $xpath->evaluate('string(//ec2:size/text())');
$return['status'] = $xpath->evaluate('string(//ec2:status/text())');
$return['createTime'] = $xpath->evaluate('string(//ec2:createTime/text())');
$return['availabilityZone'] = $xpath->evaluate('string(//ec2:availabilityZone/text())');
$return['snapshotId'] = $xpath->evaluate('string(//ec2:snapshotId/text())');
return $return;
}
/**
* Lists one or more Amazon EBS volumes that you own, If you do not
* specify any volumes, Amazon EBS returns all volumes that you own.
*
* @param string|array $volumeId The ID or array of ID's of the volume(s) to list
* @return array
*/
public function describeVolume($volumeId = null)
{
$params = array();
$params['Action'] = 'DescribeVolumes';
if(is_array($volumeId) && !empty($volumeId)) {
foreach($volumeId as $k=>$name) {
$params['VolumeId.' . ($k+1)] = $name;
}
} elseif($volumeId) {
$params['VolumeId.1'] = $volumeId;
}
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$nodes = $xpath->query('//ec2:volumeSet/ec2:item', $response->getDocument());
$return = array();
foreach ($nodes as $node) {
$item = array();
$item['volumeId'] = $xpath->evaluate('string(ec2:volumeId/text())', $node);
$item['size'] = $xpath->evaluate('string(ec2:size/text())', $node);
$item['status'] = $xpath->evaluate('string(ec2:status/text())', $node);
$item['createTime'] = $xpath->evaluate('string(ec2:createTime/text())', $node);
$attachmentSet = $xpath->query('ec2:attachmentSet/ec2:item', $node);
if($attachmentSet->length == 1) {
$_as = $attachmentSet->item(0);
$as = array();
$as['volumeId'] = $xpath->evaluate('string(ec2:volumeId/text())', $_as);
$as['instanceId'] = $xpath->evaluate('string(ec2:instanceId/text())', $_as);
$as['device'] = $xpath->evaluate('string(ec2:device/text())', $_as);
$as['status'] = $xpath->evaluate('string(ec2:status/text())', $_as);
$as['attachTime'] = $xpath->evaluate('string(ec2:attachTime/text())', $_as);
$item['attachmentSet'] = $as;
}
$return[] = $item;
unset($item, $node);
}
return $return;
}
public function describeAttachedVolumes($instanceId)
{
$volumes = $this->describeVolume();
$return = array();
foreach($volumes as $vol) {
if(isset($vol['attachmentSet']) && $vol['attachmentSet']['instanceId'] == $instanceId) {
$return[] = $vol;
}
}
return $return;
}
/**
* Attaches an Amazon EBS volume to an instance
*
* @param string $volumeId The ID of the Amazon EBS volume
* @param string $instanceId The ID of the instance to which the volume attaches
* @param string $device Specifies how the device is exposed to the instance (e.g., /dev/sdh).
* @return array
*/
public function attachVolume($volumeId, $instanceId, $device)
{
$params = array();
$params['Action'] = 'AttachVolume';
$params['VolumeId'] = $volumeId;
$params['InstanceId'] = $instanceId;
$params['Device'] = $device;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = array();
$return['volumeId'] = $xpath->evaluate('string(//ec2:volumeId/text())');
$return['instanceId'] = $xpath->evaluate('string(//ec2:instanceId/text())');
$return['device'] = $xpath->evaluate('string(//ec2:device/text())');
$return['status'] = $xpath->evaluate('string(//ec2:status/text())');
$return['attachTime'] = $xpath->evaluate('string(//ec2:attachTime/text())');
return $return;
}
/**
* Detaches an Amazon EBS volume from an instance
*
* @param string $volumeId The ID of the Amazon EBS volume
* @param string $instanceId The ID of the instance from which the volume will detach
* @param string $device The device name
* @param boolean $force Forces detachment if the previous detachment attempt did not occur cleanly
* (logging into an instance, unmounting the volume, and detaching normally).
* This option can lead to data loss or a corrupted file system. Use this option
* only as a last resort to detach an instance from a failed instance. The
* instance will not have an opportunity to flush file system caches nor
* file system meta data.
* @return array
*/
public function detachVolume($volumeId, $instanceId = null, $device = null, $force = false)
{
$params = array();
$params['Action'] = 'DetachVolume';
$params['VolumeId'] = $volumeId;
$params['InstanceId'] = $instanceId;
$params['Device'] = $device;
$params['Force'] = $force;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = array();
$return['volumeId'] = $xpath->evaluate('string(//ec2:volumeId/text())');
$return['instanceId'] = $xpath->evaluate('string(//ec2:instanceId/text())');
$return['device'] = $xpath->evaluate('string(//ec2:device/text())');
$return['status'] = $xpath->evaluate('string(//ec2:status/text())');
$return['attachTime'] = $xpath->evaluate('string(//ec2:attachTime/text())');
return $return;
}
/**
* Deletes an Amazon EBS volume
*
* @param string $volumeId The ID of the volume to delete
* @return boolean
*/
public function deleteVolume($volumeId)
{
$params = array();
$params['Action'] = 'DeleteVolume';
$params['volumeId'] = $volumeId;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = $xpath->evaluate('string(//ec2:return/text())');
return ($return === "true");
}
/**
* Creates a snapshot of an Amazon EBS volume and stores it in Amazon S3. You can use snapshots for backups,
* to launch instances from identical snapshots, and to save data before shutting down an instance
*
* @param string $volumeId The ID of the Amazon EBS volume to snapshot
* @return array
*/
public function createSnapshot($volumeId)
{
$params = array();
$params['Action'] = 'CreateSnapshot';
$params['VolumeId'] = $volumeId;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = array();
$return['snapshotId'] = $xpath->evaluate('string(//ec2:snapshotId/text())');
$return['volumeId'] = $xpath->evaluate('string(//ec2:volumeId/text())');
$return['status'] = $xpath->evaluate('string(//ec2:status/text())');
$return['startTime'] = $xpath->evaluate('string(//ec2:startTime/text())');
$return['progress'] = $xpath->evaluate('string(//ec2:progress/text())');
return $return;
}
/**
* Describes the status of Amazon EBS snapshots
*
* @param string|array $snapshotId The ID or arry of ID's of the Amazon EBS snapshot
* @return array
*/
public function describeSnapshot($snapshotId = null)
{
$params = array();
$params['Action'] = 'DescribeSnapshots';
if(is_array($snapshotId) && !empty($snapshotId)) {
foreach($snapshotId as $k=>$name) {
$params['SnapshotId.' . ($k+1)] = $name;
}
} elseif($snapshotId) {
$params['SnapshotId.1'] = $snapshotId;
}
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$nodes = $xpath->query('//ec2:snapshotSet/ec2:item', $response->getDocument());
$return = array();
foreach ($nodes as $node) {
$item = array();
$item['snapshotId'] = $xpath->evaluate('string(ec2:snapshotId/text())', $node);
$item['volumeId'] = $xpath->evaluate('string(ec2:volumeId/text())', $node);
$item['status'] = $xpath->evaluate('string(ec2:status/text())', $node);
$item['startTime'] = $xpath->evaluate('string(ec2:startTime/text())', $node);
$item['progress'] = $xpath->evaluate('string(ec2:progress/text())', $node);
$return[] = $item;
unset($item, $node);
}
return $return;
}
/**
* Deletes a snapshot of an Amazon EBS volume that is stored in Amazon S3
*
* @param string $snapshotId The ID of the Amazon EBS snapshot to delete
* @return boolean
*/
public function deleteSnapshot($snapshotId)
{
$params = array();
$params['Action'] = 'DeleteSnapshot';
$params['SnapshotId'] = $snapshotId;
$response = $this->sendRequest($params);
$xpath = $response->getXPath();
$return = $xpath->evaluate('string(//ec2:return/text())');
return ($return === "true");
}
}