modules/libjuju/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 from juju import loop
  14
  15 log = logging.getLogger(__name__)
  16
  17 MB = 1
  18
  19
  20 async def main():
  21     model = Model()
  22     await model.connect()
  23     await model.reset(force=True)
  24
  25     ubuntu_app = await model.deploy(
  26         'mysql',
  27         application_name='mysql',
  28         series='trusty',
  29         channel='stable',
  30         config={
  31             'tuning-level': 'safest',
  32         },
  33         constraints={
  34             'mem': 256 * MB,
  35         },
  36     )
  37
  38     # update and check app config
  39     await ubuntu_app.set_config({'tuning-level': 'fast'})
  40     config = await ubuntu_app.get_config()
  41     assert(config['tuning-level']['value'] == 'fast')
  42
  43     # update and check app constraints
  44     await ubuntu_app.set_constraints({'mem': 512 * MB})
  45     constraints = await ubuntu_app.get_constraints()
  46     assert(constraints['mem'] == 512 * MB)
  47
  48     await model.disconnect()
  49
  50
  51 if __name__ == '__main__':
  52     logging.basicConfig(level=logging.DEBUG)
  53     ws_logger = logging.getLogger('websockets.protocol')
  54     ws_logger.setLevel(logging.INFO)
  55     loop.run(main())