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 = 1
  17
  18
  19 async def run():
  20     model = Model()
  21     await model.connect_current()
  22     await model.reset(force=True)
  23
  24     ubuntu_app = await model.deploy(
  25         'mysql',
  26         application_name='mysql',
  27         series='trusty',
  28         channel='stable',
  29         config={
  30             'tuning-level': 'safest',
  31         },
  32         constraints={
  33             'mem': 256 * MB,
  34         },
  35     )
  36
  37     # update and check app config
  38     await ubuntu_app.set_config({'tuning-level': 'fast'})
  39     config = await ubuntu_app.get_config()
  40     assert(config['tuning-level']['value'] == 'fast')
  41
  42     # update and check app constraints
  43     await ubuntu_app.set_constraints({'mem': 512 * MB})
  44     constraints = await ubuntu_app.get_constraints()
  45     assert(constraints['mem'] == 512 * MB)
  46
  47     await model.disconnect()
  48     model.loop.stop()
  49
  50 logging.basicConfig(level=logging.DEBUG)
  51 ws_logger = logging.getLogger('websockets.protocol')
  52 ws_logger.setLevel(logging.INFO)
  53 loop = asyncio.get_event_loop()
  54 loop.set_debug(False)
  55 loop.create_task(run())
  56 loop.run_forever()