server/lib/private/Files/ObjectStore/S3.php

117 lines
3.4 KiB
PHP
Raw Normal View History

<?php
/**
* @copyright Copyright (c) 2016 Robin Appelman <robin@icewind.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Files\ObjectStore;
use Guzzle\Http\EntityBody;
use Guzzle\Http\Message\RequestInterface;
use Guzzle\Service\Command\CommandInterface;
use Guzzle\Stream\PhpStreamRequestFactory;
use Icewind\Streams\CallbackWrapper;
use OCP\Files\ObjectStore\IObjectStore;
// TODO: proper composer
set_include_path(get_include_path() . PATH_SEPARATOR .
\OC_App::getAppPath('files_external') . '/3rdparty/aws-sdk-php');
require_once 'aws-autoloader.php';
class S3 implements IObjectStore {
use S3ConnectionTrait;
public function __construct($parameters) {
$this->parseParams($parameters);
}
/**
* @return string the container or bucket name where objects are stored
* @since 7.0.0
*/
function getStorageId() {
return $this->id;
}
/**
* Serialize and sign a command, returning a request object
*
* @param CommandInterface $command Command to sign
*
* @return RequestInterface
*/
protected function getSignedRequest($command) {
$request = $command->prepare();
$request->dispatch('request.before_send', array('request' => $request));
return $request;
}
/**
* @param string $urn the unified resource name used to identify the object
* @return resource stream with the read data
* @throws \Exception when something goes wrong, message will be logged
* @since 7.0.0
*/
function readObject($urn) {
// Create the command and serialize the request
$request = $this->getSignedRequest($this->getConnection()->getCommand('GetObject', [
'Bucket' => $this->bucket,
'Key' => $urn
]));
// Create a stream that uses the EntityBody object
$factory = new PhpStreamRequestFactory();
/** @var EntityBody $body */
$body = $factory->fromRequest($request, array(), array('stream_class' => 'Guzzle\Http\EntityBody'));
$stream = $body->getStream();
// we need to keep the guzzle request in scope untill the stream is closed
return CallbackWrapper::wrap($stream, null, null, function () use ($body) {
$body->close();
});
}
/**
* @param string $urn the unified resource name used to identify the object
* @param resource $stream stream with the data to write
* @throws \Exception when something goes wrong, message will be logged
* @since 7.0.0
*/
function writeObject($urn, $stream) {
$this->getConnection()->putObject([
'Bucket' => $this->bucket,
'Key' => $urn,
'Body' => $stream
]);
}
/**
* @param string $urn the unified resource name used to identify the object
* @return void
* @throws \Exception when something goes wrong, message will be logged
* @since 7.0.0
*/
function deleteObject($urn) {
$this->getConnection()->deleteObject([
'Bucket' => $this->bucket,
'Key' => $urn
]);
}
}