def connect(self): 
        try:
            self.connection = pymongo.Connection(self.host, self.port)
            self.db = self.connection[self.name]
        except AutoReconnect:
            raise DatabaseException("It's not possible connect to the database")
def create_snapshot_metadata(self, snapshot_id, metadata):
        """Create metadata for the snapshot."""
        put_body = json.dumps({'metadata': metadata})
        url = "snapshots/%s/metadata" % str(snapshot_id)
        resp, body = self.post(url, put_body)
        body = json.loads(body)
        return resp, body['metadata']