def configure_environment(self): """The provisioning agent configure its environment on start or change. The environment contains the configuration th agent needs to interact with its machine provider, in order to do its work. This configuration data is deployed lazily over an encrypted connection upon first usage. The agent waits for this data to exist before completing its startup. """ try: get_d, watch_d = self.client.get_and_watch("/environment") environment_data, stat = yield get_d watch_d.addCallback(self._on_environment_changed) except NoNodeException: # Wait till the environment node appears. play twisted gymnastics exists_d, watch_d = self.client.exists_and_watch("/environment") stat = yield exists_d if stat: environment = yield self.configure_environment() else: watch_d.addCallback( lambda result: self.configure_environment()) if not stat: environment = yield watch_d returnValue(environment) config = EnvironmentsConfig() config.parse(environment_data) returnValue(config.get_default())
def test_serialize_custom_variables_outside_environment(self): """Serializing captures custom variables out of the environment.""" data = yaml.load(SAMPLE_ENV) data["default"] = "myfirstenv" self.write_config(yaml.dump(data)) self.config.load() serialized = self.config.serialize() config = EnvironmentsConfig() config.parse(serialized) environment = config.get_default() self.assertEqual(environment.name, "myfirstenv")