forked from aws/aws-sdk-php
/
CopySnapshotListener.php
82 lines (72 loc) · 2.61 KB
/
CopySnapshotListener.php
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<?php
/**
* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
namespace Aws\Ec2;
use Aws\Common\Client\AwsClientInterface;
use Aws\Common\Signature\SignatureV4;
use Guzzle\Common\Event;
use Guzzle\Service\Command\CommandInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Adds computed values to the CopySnapshot operation
* @internal
*/
class CopySnapshotListener implements EventSubscriberInterface
{
public static function getSubscribedEvents()
{
return array('command.before_prepare' => 'onCommandBeforePrepare');
}
public function onCommandBeforePrepare(Event $event)
{
/** @var CommandInterface $command */
$command = $event['command'];
if ($command->getName() !== 'CopySnapshot') {
return;
} elseif ($command['__internal']) {
// Prevent infinite recursion when adding the presigned URL
unset($command['__internal']);
return;
}
/** @var AwsClientInterface $client */
$client = $command->getClient();
$presignedUrl = $this->createPresignedUrl($client, $command);
$command['DestinationRegion'] = $client->getRegion();
$command['PresignedUrl'] = $presignedUrl;
}
private function createPresignedUrl(
AwsClientInterface $client,
CommandInterface $command
) {
// Create a temporary client used to generate the presigned URL
$newClient = Ec2Client::factory(array(
'region' => $command['SourceRegion'],
'signature' => 'v4',
'credentials' => $client->getCredentials(),
));
$preCommand = $newClient->getCommand(
'CopySnapshot',
$command->toArray()
);
$preCommand['__internal'] = true;
/** @var \Guzzle\Http\Message\EntityEnclosingRequest $preRequest */
$preRequest = $preCommand->prepare();
return $newClient->getSignature()->createPresignedUrl(
SignatureV4::convertPostToGet($preRequest),
$newClient->getCredentials(),
'+1 hour'
);
}
}