examples/config.py

   1 """
   2 This example:
   3
   4 1. Connects to the current model
   5 2. Resets it
   6 3. Deploys a charm and prints its config and constraints
   7
   8 """
   9 import asyncio
  10 import logging
  11
  12 from juju.model import Model
  13
  14 log = logging.getLogger(__name__)
  15
  16 MB = 1024 * 1024
  17
  18 async def run():
  19     model = Model()
  20     await model.connect_current()
  21     await model.reset(force=True)
  22
  23     ubuntu_app = await model.deploy(
  24         'mysql',
  25         application_name='mysql',
  26         series='trusty',
  27         channel='stable',
  28         config={
  29             'tuning-level': 'safest',
  30         },
  31         constraints={
  32             'mem': 256 * MB,
  33         },
  34     )
  35
  36     # update and check app config
  37     await ubuntu_app.set_config({'tuning-level': 'fast'})
  38     config = await ubuntu_app.get_config()
  39     assert(config['tuning-level']['value'] == 'fast')
  40
  41     # update and check app constraints
  42     await ubuntu_app.set_constraints({'mem': 512 * MB})
  43     constraints = await ubuntu_app.get_constraints()
  44     assert(constraints['mem'] == 512 * MB)
  45
  46     await model.disconnect()
  47     model.loop.stop()
  48
  49 logging.basicConfig(level=logging.DEBUG)
  50 ws_logger = logging.getLogger('websockets.protocol')
  51 ws_logger.setLevel(logging.INFO)
  52 loop = asyncio.get_event_loop()
  53 loop.set_debug(False)
  54 loop.create_task(run())
  55 loop.run_forever()