331 lines
14 KiB
PHP
331 lines
14 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Service_Amazon
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* @subpackage Ec2
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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require_once 'Zend/Service/Amazon/Ec2/Abstract.php';
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/**
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* An Amazon EC2 interface to register, describe and deregister Amamzon Machine Instances (AMI)
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*
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* @category Zend
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* @package Zend_Service_Amazon
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* @subpackage Ec2
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* @copyright Copyright (c) 22005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Service_Amazon_Ec2_Image extends Zend_Service_Amazon_Ec2_Abstract
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{
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/**
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* Registers an AMI with Amazon EC2. Images must be registered before
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* they can be launched.
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*
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* Each AMI is associated with an unique ID which is provided by the Amazon
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* EC2 service through the RegisterImage operation. During registration, Amazon
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* EC2 retrieves the specified image manifest from Amazon S3 and verifies that
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* the image is owned by the user registering the image.
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*
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* The image manifest is retrieved once and stored within the Amazon EC2.
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* Any modifications to an image in Amazon S3 invalidates this registration.
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* If you make changes to an image, deregister the previous image and register
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* the new image. For more information, see DeregisterImage.
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*
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* @param string $imageLocation Full path to your AMI manifest in Amazon S3 storage.
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* @return string The ami fro the newly registred image;
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*/
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public function register($imageLocation)
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{
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$params = array();
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$params['Action'] = 'RegisterImage';
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$params['ImageLocation']= $imageLocation;
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$response = $this->sendRequest($params);
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$xpath = $response->getXPath();
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$amiId = $xpath->evaluate('string(//ec2:imageId/text())');
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return $amiId;
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}
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/**
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* Returns information about AMIs, AKIs, and ARIs available to the user.
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* Information returned includes image type, product codes, architecture,
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* and kernel and RAM disk IDs. Images available to the user include public
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* images available for any user to launch, private images owned by the user
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* making the request, and private images owned by other users for which the
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* user has explicit launch permissions.
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*
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* Launch permissions fall into three categories:
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* public: The owner of the AMI granted launch permissions for the AMI
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* to the all group. All users have launch permissions for these AMIs.
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* explicit: The owner of the AMI granted launch permissions to a specific user.
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* implicit: A user has implicit launch permissions for all AMIs he or she owns.
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*
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* The list of AMIs returned can be modified by specifying AMI IDs, AMI owners,
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* or users with launch permissions. If no options are specified, Amazon EC2 returns
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* all AMIs for which the user has launch permissions.
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*
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* If you specify one or more AMI IDs, only AMIs that have the specified IDs are returned.
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* If you specify an invalid AMI ID, a fault is returned. If you specify an AMI ID for which
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* you do not have access, it will not be included in the returned results.
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*
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* If you specify one or more AMI owners, only AMIs from the specified owners and for
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* which you have access are returned. The results can include the account IDs of the
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* specified owners, amazon for AMIs owned by Amazon or self for AMIs that you own.
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*
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* If you specify a list of executable users, only users that have launch permissions
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* for the AMIs are returned. You can specify account IDs (if you own the AMI(s)), self
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* for AMIs for which you own or have explicit permissions, or all for public AMIs.
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*
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* @param string|array $imageId A list of image descriptions
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* @param string|array $owner Owners of AMIs to describe.
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* @param string|array $executableBy AMIs for which specified users have access.
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* @return array
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*/
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public function describe($imageId = null, $owner = null, $executableBy = null)
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{
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$params = array();
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$params['Action'] = 'DescribeImages';
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if(is_array($imageId) && !empty($imageId)) {
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foreach($imageId as $k=>$name) {
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$params['ImageId.' . ($k+1)] = $name;
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}
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} elseif($imageId) {
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$params['ImageId.1'] = $imageId;
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}
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if(is_array($owner) && !empty($owner)) {
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foreach($owner as $k=>$name) {
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$params['Owner.' . ($k+1)] = $name;
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}
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} elseif($owner) {
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$params['Owner.1'] = $owner;
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}
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if(is_array($executableBy) && !empty($executableBy)) {
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foreach($executableBy as $k=>$name) {
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$params['ExecutableBy.' . ($k+1)] = $name;
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}
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} elseif($executableBy) {
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$params['ExecutableBy.1'] = $executableBy;
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}
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$response = $this->sendRequest($params);
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$xpath = $response->getXPath();
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$nodes = $xpath->query('//ec2:imagesSet/ec2:item');
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$return = array();
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foreach ($nodes as $node) {
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$item = array();
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$item['imageId'] = $xpath->evaluate('string(ec2:imageId/text())', $node);
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$item['imageLocation'] = $xpath->evaluate('string(ec2:imageLocation/text())', $node);
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$item['imageState'] = $xpath->evaluate('string(ec2:imageState/text())', $node);
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$item['imageOwnerId'] = $xpath->evaluate('string(ec2:imageOwnerId/text())', $node);
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$item['isPublic'] = $xpath->evaluate('string(ec2:isPublic/text())', $node);
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$item['architecture'] = $xpath->evaluate('string(ec2:architecture/text())', $node);
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$item['imageType'] = $xpath->evaluate('string(ec2:imageType/text())', $node);
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$item['kernelId'] = $xpath->evaluate('string(ec2:kernelId/text())', $node);
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$item['ramdiskId'] = $xpath->evaluate('string(ec2:ramdiskId/text())', $node);
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$item['platform'] = $xpath->evaluate('string(ec2:platform/text())', $node);
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$return[] = $item;
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unset($item, $node);
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}
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return $return;
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}
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/**
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* Deregisters an AMI. Once deregistered, instances of the AMI can no longer be launched.
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*
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* @param string $imageId Unique ID of a machine image, returned by a call
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* to RegisterImage or DescribeImages.
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* @return boolean
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*/
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public function deregister($imageId)
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{
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$params = array();
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$params['Action'] = 'DeregisterImage';
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$params['ImageId'] = $imageId;
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$response = $this->sendRequest($params);
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$xpath = $response->getXPath();
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$return = $xpath->evaluate('string(//ec2:return/text())');
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return ($return === "true");
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}
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/**
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* Modifies an attribute of an AMI.
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*
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* Valid Attributes:
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* launchPermission: Controls who has permission to launch the AMI. Launch permissions
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* can be granted to specific users by adding userIds.
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* To make the AMI public, add the all group.
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* productCodes: Associates a product code with AMIs. This allows developers to
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* charge users for using AMIs. The user must be signed up for the
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* product before they can launch the AMI. This is a write once attribute;
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* after it is set, it cannot be changed or removed.
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*
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* @param string $imageId AMI ID to modify.
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* @param string $attribute Specifies the attribute to modify. See the preceding
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* attributes table for supported attributes.
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* @param string $operationType Specifies the operation to perform on the attribute.
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* See the preceding attributes table for supported operations for attributes.
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* Valid Values: add | remove
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* Required for launchPermssion Attribute
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*
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* @param string|array $userId User IDs to add to or remove from the launchPermission attribute.
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* Required for launchPermssion Attribute
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* @param string|array $userGroup User groups to add to or remove from the launchPermission attribute.
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* Currently, the all group is available, which will make it a public AMI.
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* Required for launchPermssion Attribute
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* @param string $productCode Attaches a product code to the AMI. Currently only one product code
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* can be associated with an AMI. Once set, the product code cannot be changed or reset.
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* Required for productCodes Attribute
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* @return boolean
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*/
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public function modifyAttribute($imageId, $attribute, $operationType = 'add', $userId = null, $userGroup = null, $productCode = null)
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{
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$params = array();
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$params['Action'] = 'ModifyImageAttribute';
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$parmas['ImageId'] = $imageId;
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$params['Attribute'] = $attribute;
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switch($attribute) {
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case 'launchPermission':
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// break left out
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case 'launchpermission':
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$params['Attribute'] = 'launchPermission';
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$params['OperationType'] = $operationType;
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if(is_array($userId) && !empty($userId)) {
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foreach($userId as $k=>$name) {
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$params['UserId.' . ($k+1)] = $name;
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}
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} elseif($userId) {
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$params['UserId.1'] = $userId;
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}
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if(is_array($userGroup) && !empty($userGroup)) {
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foreach($userGroup as $k=>$name) {
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$params['UserGroup.' . ($k+1)] = $name;
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}
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} elseif($userGroup) {
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$params['UserGroup.1'] = $userGroup;
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}
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break;
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case 'productCodes':
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// break left out
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case 'productcodes':
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$params['Attribute'] = 'productCodes';
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$parmas['ProductCode.1'] = $productCode;
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break;
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default:
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require_once 'Zend/Service/Amazon/Ec2/Exception.php';
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throw new Zend_Service_Amazon_Ec2_Exception('Invalid Attribute Passed In. Valid Image Attributes are launchPermission and productCode.');
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break;
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}
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$response = $this->sendRequest($params);
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$xpath = $response->getXPath();
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$return = $xpath->evaluate('string(//ec2:return/text())');
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return ($return === "true");
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}
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/**
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* Returns information about an attribute of an AMI. Only one attribute can be specified per call.
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*
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* @param string $imageId ID of the AMI for which an attribute will be described.
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* @param string $attribute Specifies the attribute to describe. Valid Attributes are
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* launchPermission, productCodes
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*/
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public function describeAttribute($imageId, $attribute)
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{
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$params = array();
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$params['Action'] = 'DescribeImageAttribute';
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$params['ImageId'] = $imageId;
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$params['Attribute'] = $attribute;
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$response = $this->sendRequest($params);
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$xpath = $response->getXPath();
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$return = array();
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$return['imageId'] = $xpath->evaluate('string(//ec2:imageId/text())');
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// check for launchPermission
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if($attribute == 'launchPermission') {
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$lPnodes = $xpath->query('//ec2:launchPermission/ec2:item');
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if($lPnodes->length > 0) {
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$return['launchPermission'] = array();
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foreach($lPnodes as $node) {
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$return['launchPermission'][] = $xpath->evaluate('string(ec2:userId/text())', $node);
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}
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}
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}
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// check for product codes
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if($attribute == 'productCodes') {
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$pCnodes = $xpath->query('//ec2:productCodes/ec2:item');
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if($pCnodes->length > 0) {
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$return['productCodes'] = array();
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foreach($pCnodes as $node) {
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$return['productCodes'][] = $xpath->evaluate('string(ec2:productCode/text())', $node);
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}
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}
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}
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return $return;
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}
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/**
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* Resets an attribute of an AMI to its default value. The productCodes attribute cannot be reset
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*
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* @param string $imageId ID of the AMI for which an attribute will be reset.
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* @param String $attribute Specifies the attribute to reset. Currently, only launchPermission is supported.
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* In the case of launchPermission, all public and explicit launch permissions for
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* the AMI are revoked.
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* @return boolean
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*/
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public function resetAttribute($imageId, $attribute)
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{
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$params = array();
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$params['Action'] = 'ResetImageAttribute';
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$params['ImageId'] = $imageId;
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$params['Attribute'] = $attribute;
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$response = $this->sendRequest($params);
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$xpath = $response->getXPath();
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$return = $xpath->evaluate('string(//ec2:return/text())');
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return ($return === "true");
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}
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}
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