128 lines
3.6 KiB
PHP
128 lines
3.6 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
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*
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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 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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const S3_UPLOAD_PART_SIZE = 524288000; // 500MB
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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 $urn the unified resource name used to identify the object
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* @return resource stream with the read data
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* @throws \Exception when something goes wrong, message will be logged
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* @since 7.0.0
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*/
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function readObject($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 $stream stream with the data to write
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* @throws \Exception when something goes wrong, message will be logged
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* @since 7.0.0
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*/
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function writeObject($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' => $urn,
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'part_size' => S3_UPLOAD_PART_SIZE,
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]);
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try {
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$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 $urn the unified resource name used to identify the object
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* @return void
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* @throws \Exception when something goes wrong, message will be logged
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* @since 7.0.0
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*/
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function deleteObject($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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}
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