+ def __init__(self, loop=None):
+ """Instantiate a new Controller.
+
+ One of the connect_* methods will need to be called before this
+ object can be used for anything interesting.
+
+ :param loop: an asyncio event loop
+
+ """
+ self.loop = loop or asyncio.get_event_loop()
+ self.connection = None
+
+ async def connect(
+ self, endpoint, username, password, cacert=None, macaroons=None):
+ """Connect to an arbitrary Juju controller.
+
+ """
+ self.connection = await connection.Connection.connect(
+ endpoint, None, username, password, cacert, macaroons)
+