1 files changed, 124 insertions, 0 deletions
diff --git a/lib/private/Files/ObjectStore/S3ConnectionTrait.php b/lib/private/Files/ObjectStore/S3ConnectionTrait.php
new file mode 100644
index 00000000000..a8b57cb18d3
--- /dev/null
+++ b/lib/private/Files/ObjectStore/S3ConnectionTrait.php
@@ -0,0 +1,124 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016 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 Aws\S3\Exception\S3Exception;
+use Aws\S3\S3Client;
+
+trait S3ConnectionTrait {
+	/** @var array */
+	protected $params;
+
+	/** @var S3Client */
+	protected $connection;
+
+	/** @var string */
+	protected $id;
+
+	/** @var string */
+	protected $bucket;
+
+	/** @var int */
+	protected $timeout;
+
+	protected $test;
+
+	protected function parseParams($params) {
+		if (empty($params['key']) || empty($params['secret']) || empty($params['bucket'])) {
+			throw new \Exception("Access Key, Secret and Bucket have to be configured.");
+		}
+
+		$this->id = 'amazon::' . $params['bucket'];
+
+		$this->test = isset($params['test']);
+		$this->bucket = $params['bucket'];
+		$this->timeout = (!isset($params['timeout'])) ? 15 : $params['timeout'];
+		$params['region'] = empty($params['region']) ? 'eu-west-1' : $params['region'];
+		$params['hostname'] = empty($params['hostname']) ? 's3.amazonaws.com' : $params['hostname'];
+		if (!isset($params['port']) || $params['port'] === '') {
+			$params['port'] = (isset($params['use_ssl']) && $params['use_ssl'] === false) ? 80 : 443;
+		}
+		$this->params = $params;
+	}
+
+
+	/**
+	 * Returns the connection
+	 *
+	 * @return S3Client connected client
+	 * @throws \Exception if connection could not be made
+	 */
+	protected function getConnection() {
+		if (!is_null($this->connection)) {
+			return $this->connection;
+		}
+
+		$scheme = (isset($this->params['use_ssl']) && $this->params['use_ssl'] === false) ? 'http' : 'https';
+		$base_url = $scheme . '://' . $this->params['hostname'] . ':' . $this->params['port'] . '/';
+
+		$options = [
+			'key' => $this->params['key'],
+			'secret' => $this->params['secret'],
+			'base_url' => $base_url,
+			'region' => $this->params['region'],
+			S3Client::COMMAND_PARAMS => [
+				'PathStyle' => isset($this->params['use_path_style']) ? $this->params['use_path_style'] : false,
+			]
+		];
+		if (isset($this->params['proxy'])) {
+			$options[S3Client::REQUEST_OPTIONS] = ['proxy' => $this->params['proxy']];
+		}
+		$this->connection = S3Client::factory($options);
+
+		if (!$this->connection->isValidBucketName($this->bucket)) {
+			throw new \Exception("The configured bucket name is invalid.");
+		}
+
+		if (!$this->connection->doesBucketExist($this->bucket)) {
+			try {
+				$this->connection->createBucket(array(
+					'Bucket' => $this->bucket
+				));
+				$this->connection->waitUntilBucketExists(array(
+					'Bucket' => $this->bucket,
+					'waiter.interval' => 1,
+					'waiter.max_attempts' => 15
+				));
+				$this->testTimeout();
+			} catch (S3Exception $e) {
+				\OCP\Util::logException('files_external', $e);
+				throw new \Exception('Creation of bucket failed. ' . $e->getMessage());
+			}
+		}
+
+		return $this->connection;
+	}
+
+	/**
+	 * when running the tests wait to let the buckets catch up
+	 */
+	private function testTimeout() {
+		if ($this->test) {
+			sleep($this->timeout);
+		}
+	}
+}