133 lines
3.9 KiB
PHP
133 lines
3.9 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
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*
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* @author Robin Appelman <robin@icewind.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 MicrosoftAzure\Storage\Blob\BlobRestProxy;
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use MicrosoftAzure\Storage\Common\Exceptions\ServiceException;
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use OCP\Files\ObjectStore\IObjectStore;
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class Azure implements IObjectStore {
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/** @var string */
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private $containerName;
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/** @var string */
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private $accountName;
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/** @var string */
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private $accountKey;
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/** @var BlobRestProxy|null */
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private $blobClient = null;
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/** @var string|null */
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private $endpoint = null;
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/** @var bool */
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private $autoCreate = false;
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/**
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* @param array $parameters
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*/
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public function __construct($parameters) {
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$this->containerName = $parameters['container'];
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$this->accountName = $parameters['account_name'];
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$this->accountKey = $parameters['account_key'];
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if (isset($parameters['endpoint'])) {
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$this->endpoint = $parameters['endpoint'];
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}
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if (isset($parameters['autocreate'])) {
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$this->autoCreate = $parameters['autocreate'];
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}
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}
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/**
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* @return BlobRestProxy
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*/
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private function getBlobClient() {
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if (!$this->blobClient) {
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$protocol = $this->endpoint ? substr($this->endpoint, 0, strpos($this->endpoint, ':')) : 'https';
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$connectionString = "DefaultEndpointsProtocol=" . $protocol . ";AccountName=" . $this->accountName . ";AccountKey=" . $this->accountKey;
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if ($this->endpoint) {
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$connectionString .= ';BlobEndpoint=' . $this->endpoint;
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}
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$this->blobClient = BlobRestProxy::createBlobService($connectionString);
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if ($this->autoCreate) {
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try {
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$this->blobClient->createContainer($this->containerName);
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} catch (ServiceException $e) {
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if ($e->getCode() === 409) {
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// already exists
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} else {
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throw $e;
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}
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}
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}
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}
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return $this->blobClient;
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}
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/**
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* @return string the container or bucket name where objects are stored
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*/
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public function getStorageId() {
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return 'azure::blob::' . $this->containerName;
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}
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/**
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* @param string $urn the unified resource name used to identify the object
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* @return resource stream with the read data
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* @throws \Exception when something goes wrong, message will be logged
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*/
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public function readObject($urn) {
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$blob = $this->getBlobClient()->getBlob($this->containerName, $urn);
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return $blob->getContentStream();
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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 $stream stream with the data to write
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* @throws \Exception when something goes wrong, message will be logged
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*/
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public function writeObject($urn, $stream) {
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$this->getBlobClient()->createBlockBlob($this->containerName, $urn, $stream);
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}
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/**
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* @param string $urn the unified resource name used to identify the object
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* @return void
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* @throws \Exception when something goes wrong, message will be logged
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*/
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public function deleteObject($urn) {
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$this->getBlobClient()->deleteBlob($this->containerName, $urn);
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}
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public function objectExists($urn) {
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try {
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$this->getBlobClient()->getBlobMetadata($this->containerName, $urn);
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return true;
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} catch (ServiceException $e) {
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if ($e->getCode() === 404) {
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return false;
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} else {
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throw $e;
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}
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}
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}
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}
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