examples/relate.py

   1 """
   2 Deploy two charms and relate them.
   3
   4 """
   5 import asyncio
   6 import logging
   7
   8 from juju.model import Model, ModelObserver
   9
  10
  11 class MyModelObserver(ModelObserver):
  12     async def on_change(self, delta, old, new, model):
  13         if model.all_units_idle():
  14             logging.debug('All units idle, disconnecting')
  15             await model.disconnect()
  16             model.loop.stop()
  17
  18
  19 async def run():
  20     model = Model()
  21     await model.connect_current()
  22
  23     await model.reset(force=True)
  24     model.add_observer(MyModelObserver())
  25
  26     await model.deploy(
  27         'ubuntu-0',
  28         service_name='ubuntu',
  29         series='trusty',
  30         channel='stable',
  31     )
  32     await model.deploy(
  33         'nrpe-11',
  34         service_name='nrpe',
  35         series='trusty',
  36         channel='stable',
  37         num_units=0,
  38     )
  39     await model.add_relation(
  40         'ubuntu',
  41         'nrpe',
  42     )
  43
  44 logging.basicConfig(level=logging.DEBUG)
  45 ws_logger = logging.getLogger('websockets.protocol')
  46 ws_logger.setLevel(logging.INFO)
  47 loop = asyncio.get_event_loop()
  48 loop.set_debug(False)
  49 loop.create_task(run())
  50 loop.run_forever()