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<?php |
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/** |
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* @copyright Copyright (c) 2017 Robin Appelman <[email protected]> |
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* |
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* @author Christoph Wurst <[email protected]> |
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* @author Florent <[email protected]> |
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* @author Morris Jobke <[email protected]> |
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* @author Robin Appelman <[email protected]> |
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* @author Roeland Jago Douma <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program 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 as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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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 |
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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 Aws\S3\Exception\S3MultipartUploadException; |
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use Aws\S3\MultipartUploader; |
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use Aws\S3\ObjectUploader; |
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use Aws\S3\S3Client; |
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use Icewind\Streams\CallbackWrapper; |
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use OC\Files\Stream\SeekableHttpStream; |
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trait S3ObjectTrait { |
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/** |
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* Returns the connection |
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* |
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* @return S3Client connected client |
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* @throws \Exception if connection could not be made |
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*/ |
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abstract protected function getConnection(); |
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/** |
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* @param string $urn the unified resource name used to identify the object |
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* @return resource stream with the read data |
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* @throws \Exception when something goes wrong, message will be logged |
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* @since 7.0.0 |
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*/ |
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public function readObject($urn) { |
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return SeekableHttpStream::open(function ($range) use ($urn) { |
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$command = $this->getConnection()->getCommand('GetObject', [ |
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'Bucket' => $this->bucket, |
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'Key' => $urn, |
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'Range' => 'bytes=' . $range, |
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]); |
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$request = \Aws\serialize($command); |
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$headers = []; |
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foreach ($request->getHeaders() as $key => $values) { |
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foreach ($values as $value) { |
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$headers[] = "$key: $value"; |
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} |
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} |
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$opts = [ |
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'http' => [ |
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'protocol_version' => 1.1, |
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'header' => $headers, |
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], |
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]; |
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$context = stream_context_create($opts); |
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return fopen($request->getUri(), 'r', false, $context); |
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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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* @param resource $stream stream with the data to write |
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* @throws \Exception when something goes wrong, message will be logged |
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* @since 7.0.0 |
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*/ |
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public function writeObject($urn, $stream) { |
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$count = 0; |
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$countStream = CallbackWrapper::wrap($stream, function ($read) use (&$count) { |
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$count += $read; |
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}); |
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$uploader = new MultipartUploader($this->getConnection(), $countStream, [ |
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'bucket' => $this->bucket, |
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'key' => $urn, |
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'part_size' => $this->uploadPartSize, |
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]); |
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try { |
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$uploader->upload(); |
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} catch (S3MultipartUploadException $e) { |
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// This is an empty file so just touch it then |
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if ($count === 0 && feof($countStream)) { |
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$uploader = new ObjectUploader($this->getConnection(), $this->bucket, $urn, ''); |
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$uploader->upload(); |
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} else { |
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throw $e; |
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} |
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} |
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fclose($countStream); |
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} |
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/** |
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* @param string $urn the unified resource name used to identify the object |
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* @return void |
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* @throws \Exception when something goes wrong, message will be logged |
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* @since 7.0.0 |
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*/ |
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public function deleteObject($urn) { |
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$this->getConnection()->deleteObject([ |
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'Bucket' => $this->bucket, |
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'Key' => $urn, |
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]); |
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} |
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public function objectExists($urn) { |
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return $this->getConnection()->doesObjectExist($this->bucket, $urn); |
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} |
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public function copyObject($from, $to) { |
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$this->getConnection()->copy($this->getBucket(), $from, $this->getBucket(), $to); |
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} |
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} |
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nextcloud /
server
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If the returned type also contains false, it is an indicator that maybe an error condition leading to the specific return statement remains unhandled.