147 lines
4.2 KiB
PHP
147 lines
4.2 KiB
PHP
<?php
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/**
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Robin Appelman <icewind@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Files\ObjectStore;
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use Guzzle\Http\Exception\ClientErrorResponseException;
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use OCP\Files\ObjectStore\IObjectStore;
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use OpenCloud\OpenStack;
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use OpenCloud\Rackspace;
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class Swift implements IObjectStore {
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/**
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* @var \OpenCloud\OpenStack
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*/
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private $client;
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/**
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* @var array
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*/
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private $params;
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/**
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* @var \OpenCloud\ObjectStore\Service
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*/
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private $objectStoreService;
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/**
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* @var \OpenCloud\ObjectStore\Resource\Container
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*/
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private $container;
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public function __construct($params) {
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if (!isset($params['container'])) {
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$params['container'] = 'owncloud';
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}
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if (!isset($params['autocreate'])) {
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// should only be true for tests
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$params['autocreate'] = false;
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}
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if (isset($params['apiKey'])) {
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$this->client = new Rackspace($params['url'], $params);
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} else {
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$this->client = new OpenStack($params['url'], $params);
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}
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$this->params = $params;
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}
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protected function init() {
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if ($this->container) {
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return;
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}
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// the OpenCloud client library will default to 'cloudFiles' if $serviceName is null
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$serviceName = null;
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if ($this->params['serviceName']) {
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$serviceName = $this->params['serviceName'];
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}
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$this->objectStoreService = $this->client->objectStoreService($serviceName, $this->params['region']);
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try {
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$this->container = $this->objectStoreService->getContainer($this->params['container']);
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} catch (ClientErrorResponseException $ex) {
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// if the container does not exist and autocreate is true try to create the container on the fly
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if (isset($this->params['autocreate']) && $this->params['autocreate'] === true) {
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$this->container = $this->objectStoreService->createContainer($this->params['container']);
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} else {
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throw $ex;
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}
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}
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}
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/**
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* @return string the container name where objects are stored
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*/
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public function getStorageId() {
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return $this->params['container'];
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}
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/**
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* @param string $urn the unified resource name used to identify the object
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* @param resource $stream stream with the data to write
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* @throws Exception from openstack lib when something goes wrong
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*/
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public function writeObject($urn, $stream) {
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$this->init();
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$this->container->uploadObject($urn, $stream);
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}
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/**
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* @param string $urn the unified resource name used to identify the object
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* @return resource stream with the read data
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* @throws Exception from openstack lib when something goes wrong
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*/
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public function readObject($urn) {
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$this->init();
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$object = $this->container->getObject($urn);
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// we need to keep a reference to objectContent or
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// the stream will be closed before we can do anything with it
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/** @var $objectContent \Guzzle\Http\EntityBody * */
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$objectContent = $object->getContent();
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$objectContent->rewind();
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$stream = $objectContent->getStream();
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// save the object content in the context of the stream to prevent it being gc'd until the stream is closed
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stream_context_set_option($stream, 'swift','content', $objectContent);
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return $stream;
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}
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/**
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* @param string $urn Unified Resource Name
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* @return void
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* @throws Exception from openstack lib when something goes wrong
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*/
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public function deleteObject($urn) {
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$this->init();
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// see https://github.com/rackspace/php-opencloud/issues/243#issuecomment-30032242
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$this->container->dataObject()->setName($urn)->delete();
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}
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public function deleteContainer($recursive = false) {
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$this->init();
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$this->container->delete($recursive);
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}
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}
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