add azure object storage backend

Signed-off-by: Robin Appelman <robin@icewind.nl>
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

1 files changed, 91 insertions, 0 deletions

diff --git a/lib/private/Files/ObjectStore/Azure.php b/lib/private/Files/ObjectStore/Azure.php
new file mode 100644
index 00000000000..0868f92eac8
--- /dev/null
+++ b/lib/private/Files/ObjectStore/Azure.php
@@ -0,0 +1,91 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018 Robin Appelman <robin@icewind.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Files\ObjectStore;
+
+use MicrosoftAzure\Storage\Blob\BlobRestProxy;
+use OCP\Files\ObjectStore\IObjectStore;
+
+class Azure implements IObjectStore {
+	/** @var string */
+	private $containerName;
+	/** @var string */
+	private $accountName;
+	/** @var string */
+	private $accountKey;
+	/** @var BlobRestProxy|null */
+	private $blobClient = null;
+
+	/**
+	 * @param array $parameters
+	 */
+	public function __construct($parameters) {
+		$this->containerName = $parameters['container'];
+		$this->accountName = $parameters['account_name'];
+		$this->accountKey = $parameters['account_key'];
+	}
+
+	/**
+	 * @return BlobRestProxy
+	 */
+	private function getBlobClient() {
+		if (!$this->blobClient) {
+			$connectionString = "DefaultEndpointsProtocol=https;AccountName=" . $this->accountName . ";AccountKey=" . $this->accountKey;
+			$this->blobClient = BlobRestProxy::createBlobService($connectionString);
+		}
+		return $this->blobClient;
+	}
+
+	/**
+	 * @return string the container or bucket name where objects are stored
+	 */
+	public function getStorageId() {
+		return 'azure::blob::' . $this->containerName;
+	}
+
+	/**
+	 * @param string $urn the unified resource name used to identify the object
+	 * @return resource stream with the read data
+	 * @throws \Exception when something goes wrong, message will be logged
+	 */
+	public function readObject($urn) {
+		$blob = $this->getBlobClient()->getBlob($this->containerName, $urn);
+		return $blob->getContentStream();
+	}
+
+	/**
+	 * @param string $urn the unified resource name used to identify the object
+	 * @param resource $stream stream with the data to write
+	 * @throws \Exception when something goes wrong, message will be logged
+	 */
+	public function writeObject($urn, $stream) {
+		$this->getBlobClient()->createBlockBlob($this->containerName, $urn, $stream);
+	}
+
+	/**
+	 * @param string $urn the unified resource name used to identify the object
+	 * @return void
+	 * @throws \Exception when something goes wrong, message will be logged
+	 */
+	public function deleteObject($urn) {
+		$this->getBlobClient()->deleteBlob($this->containerName, $urn);
+	}
+}