138 lines
4 KiB
PHP
138 lines
4 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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*
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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 function GuzzleHttp\Psr7\stream_for;
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use Icewind\Streams\RetryWrapper;
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use OCP\Files\NotFoundException;
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use OCP\Files\ObjectStore\IObjectStore;
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use OCP\Files\StorageAuthException;
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use OpenStack\Common\Error\BadResponseError;
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class Swift implements IObjectStore {
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/**
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* @var array
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*/
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private $params;
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/** @var SwiftFactory */
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private $swiftFactory;
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public function __construct($params, SwiftFactory $connectionFactory = null) {
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$this->swiftFactory = $connectionFactory ?: new SwiftFactory(
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\OC::$server->getMemCacheFactory()->createDistributed('swift::'),
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$params,
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\OC::$server->getLogger()
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);
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$this->params = $params;
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}
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/**
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* @return \OpenStack\ObjectStore\v1\Models\Container
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* @throws StorageAuthException
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* @throws \OCP\Files\StorageNotAvailableException
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*/
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private function getContainer() {
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return $this->swiftFactory->getContainer();
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}
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/**
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* @return string the container name where objects are stored
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*/
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public function getStorageId() {
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if (isset($this->params['bucket'])) {
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return $this->params['bucket'];
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}
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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, $stream) {
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$tmpFile = \OC::$server->getTempManager()->getTemporaryFile('swiftwrite');
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file_put_contents($tmpFile, $stream);
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$handle = fopen($tmpFile, 'rb');
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$this->getContainer()->createObject([
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'name' => $urn,
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'stream' => stream_for($handle)
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]);
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}
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/**
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* @param string $urn the unified resource name used to identify the object
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* @return resource stream with the read data
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* @throws \Exception from openstack lib when something goes wrong
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* @throws NotFoundException if file does not exist
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*/
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public function readObject($urn) {
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try {
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$object = $this->getContainer()->getObject($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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$objectContent = $object->download();
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} catch (BadResponseError $e) {
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if ($e->getResponse()->getStatusCode() === 404) {
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throw new NotFoundException("object $urn not found in object store");
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} else {
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throw $e;
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}
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}
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$objectContent->rewind();
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$stream = $objectContent->detach();
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// save the object content in the context of the stream to prevent it being gc'd until the stream is closed
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stream_context_set_option($stream, 'swift', 'content', $objectContent);
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return RetryWrapper::wrap($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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$this->getContainer()->getObject($urn)->delete();
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}
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/**
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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 deleteContainer() {
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$this->getContainer()->delete();
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}
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public function objectExists($urn) {
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return $this->getContainer()->objectExists($urn);
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}
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}
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