Propagate auth mechanism/backend failures to filesystem layer

Failure to prepare the storage during backend or auth mechanism
manipulation will throw an InsufficientDataForMeaningfulAnswerException,
which is propagated to StorageNotAvailableException in the filesystem
layer via the FailedStorage helper class.

When a storage is unavailable not due to failure, but due to
insufficient data being available, a special 'indeterminate' status is
returned to the configuration UI.

1 files changed, 30 insertions, 0 deletions

diff --git a/apps/files_external/lib/insufficientdataformeaningfulanswerexception.php b/apps/files_external/lib/insufficientdataformeaningfulanswerexception.php
new file mode 100644
index 00000000000..dd4cd75df12
--- /dev/null
+++ b/apps/files_external/lib/insufficientdataformeaningfulanswerexception.php
@@ -0,0 +1,30 @@
+<?php
+/**
+ * @author Robin McCorkell <rmccorkell@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files_External\Lib;
+
+use \OCP\Files\StorageNotAvailableException;
+
+/**
+ * Authentication mechanism or backend has insufficient data
+ */
+class InsufficientDataForMeaningfulAnswerException extends StorageNotAvailableException {
+}