From 4669612fea7d9c8c278ea9ad94e75aea0ee5eeff Mon Sep 17 00:00:00 2001
From: Tim Van Steenburgh <tvansteenburgh@gmail.com>
Date: Fri, 7 Oct 2016 12:02:50 -0400
Subject: [PATCH] Fix the deploy example

---
 examples/deploy.py | 35 +++++++++++++++++++++++++----------
 1 file changed, 25 insertions(+), 10 deletions(-)

diff --git a/examples/deploy.py b/examples/deploy.py
index a1ae503..d7ca29a 100644
--- a/examples/deploy.py
+++ b/examples/deploy.py
@@ -1,20 +1,24 @@
 """
-Deploy a charm, wait until it's idle, then destroy the unit and application.
+This example:
+
+1. Connects to the current model
+2. Resets it
+3. Deploy a charm and waits until it's idle
+4. Destroys the unit and application
 
 """
 import asyncio
 import logging
 
 from juju.model import Model, ModelObserver
-from juju.client.connection import Connection
 
 
 class MyModelObserver(ModelObserver):
-    def on_unit_add(self, delta, old, new, model):
+    async def on_unit_add(self, delta, old, new, model):
         logging.info(
             'New unit added: %s', new.name)
 
-    def on_change(self, delta, old, new, model):
+    async def on_change(self, delta, old, new, model):
         for unit in model.units.values():
             unit_status = unit.data['agent-status']['current']
             logging.info(
@@ -24,28 +28,39 @@ class MyModelObserver(ModelObserver):
                     'Destroying unit %s', unit.name)
                 loop.create_task(unit.destroy())
 
-    def on_unit_remove(self, delta, old, new, model):
+    async def on_unit_remove(self, delta, old, new, model):
         app_name = old.application
         app = model.applications[app_name]
         if not app.units:
             logging.info(
                 'Destroying application %s', app.name)
             loop.create_task(app.destroy())
+            await model.block_until(
+                lambda: len(model.applications) == 0
+            )
+            await model.disconnect()
+            model.loop.stop()
 
 
 async def run():
-    conn = await Connection.connect_current()
-    model = Model(conn)
+    model = Model()
+    await model.connect_current()
+
+    await model.reset(force=True)
     model.add_observer(MyModelObserver())
+
     await model.deploy(
         'ubuntu-0',
         service_name='ubuntu',
         series='trusty',
         channel='stable',
     )
-    await model.watch()
 
 
-logging.basicConfig(level=logging.INFO)
+logging.basicConfig(level=logging.DEBUG)
+ws_logger = logging.getLogger('websockets.protocol')
+ws_logger.setLevel(logging.INFO)
 loop = asyncio.get_event_loop()
-loop.run_until_complete(run())
+loop.set_debug(False)
+loop.create_task(run())
+loop.run_forever()
-- 
2.25.1