owncloud/core — pull request #9311 by icewind1991 (2014-06-30 14:43:46+00:00)
Title: Handle storages not being available in webui and webdav

Adds `\OCP\Files\StorageNotAvailableException` which can be thrown by storage backends for when previously configured storage backends are (temporary) not available.

This exception is handled by both the web ui (show an error message) and WebDAV (throw a 503)

For #9088

cc @PVince81 @DeepDiver1975 @schiesbn