def insert(self, doc, synced=False):
        doc.id = self.get_next_id()
        doc.synced = synced
        try:
            self.db.docs.insert(doc)
        except Exception as e:
            raise DatabaseException(e)
        return doc
def __init__(self, auth_provider):
        super(SnapshotsClientJSON, self).__init__(auth_provider)

        self.service = CONF.volume.catalog_type
        self.build_interval = CONF.volume.build_interval
        self.build_timeout = CONF.volume.build_timeout