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Diffstat (limited to 'lib/private/files/objectstore/swift.php')
| -rw-r--r-- | lib/private/files/objectstore/swift.php | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/lib/private/files/objectstore/swift.php b/lib/private/files/objectstore/swift.php new file mode 100644 index 00000000000..3378fd7b86f --- /dev/null +++ b/lib/private/files/objectstore/swift.php @@ -0,0 +1,147 @@ +<?php +/** + * @author Jörn Friedrich Dreyer + * @copyright (c) 2014 Jörn Friedrich Dreyer <jfd@owncloud.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE + * License as published by the Free Software Foundation; either + * version 3 of the License, or any later version. + * + * This library 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 library. If not, see <http://www.gnu.org/licenses/>. + * + */ + +namespace OC\Files\ObjectStore; + +use Guzzle\Http\Exception\ClientErrorResponseException; +use OCP\Files\ObjectStore\IObjectStore; +use OpenCloud\OpenStack; +use OpenCloud\Rackspace; + +class Swift implements IObjectStore { + /** + * @var \OpenCloud\OpenStack + */ + private $client; + + /** + * @var array + */ + private $params; + + /** + * @var \OpenCloud\ObjectStore\Service + */ + private $objectStoreService; + + /** + * @var \OpenCloud\ObjectStore\Resource\Container + */ + private $container; + + public function __construct($params) { + if (!isset($params['container'])) { + $params['container'] = 'owncloud'; + } + if (!isset($params['autocreate'])) { + // should only be true for tests + $params['autocreate'] = false; + } + + if (isset($params['apiKey'])) { + $this->client = new Rackspace($params['url'], $params); + } else { + $this->client = new OpenStack($params['url'], $params); + } + $this->params = $params; + } + + protected function init() { + if ($this->container) { + return; + } + + // the OpenCloud client library will default to 'cloudFiles' if $serviceName is null + $serviceName = null; + if ($this->params['serviceName']) { + $serviceName = $this->params['serviceName']; + } + + $this->objectStoreService = $this->client->objectStoreService($serviceName, $this->params['region']); + + try { + $this->container = $this->objectStoreService->getContainer($this->params['container']); + } catch (ClientErrorResponseException $ex) { + // if the container does not exist and autocreate is true try to create the container on the fly + if (isset($this->params['autocreate']) && $this->params['autocreate'] === true) { + $this->container = $this->objectStoreService->createContainer($this->params['container']); + } else { + throw $ex; + } + } + } + + /** + * @return string the container name where objects are stored + */ + public function getStorageId() { + return $this->params['container']; + } + + /** + * @param string $urn the unified resource name used to identify the object + * @param resource $stream stream with the data to write + * @throws Exception from openstack lib when something goes wrong + */ + public function writeObject($urn, $stream) { + $this->init(); + $this->container->uploadObject($urn, $stream); + } + + /** + * @param string $urn the unified resource name used to identify the object + * @return resource stream with the read data + * @throws Exception from openstack lib when something goes wrong + */ + public function readObject($urn) { + $this->init(); + $object = $this->container->getObject($urn); + + // we need to keep a reference to objectContent or + // the stream will be closed before we can do anything with it + /** @var $objectContent \Guzzle\Http\EntityBody * */ + $objectContent = $object->getContent(); + $objectContent->rewind(); + + // directly returning the object stream does not work because the GC seems to collect it, so we need a copy + $tmpStream = fopen('php://temp', 'r+'); + stream_copy_to_stream($objectContent->getStream(), $tmpStream); + rewind($tmpStream); + + return $tmpStream; + } + + /** + * @param string $urn Unified Resource Name + * @return void + * @throws Exception from openstack lib when something goes wrong + */ + public function deleteObject($urn) { + $this->init(); + // see https://github.com/rackspace/php-opencloud/issues/243#issuecomment-30032242 + $this->container->dataObject()->setName($urn)->delete(); + } + + public function deleteContainer($recursive = false) { + $this->init(); + $this->container->delete($recursive); + } + +} |