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# Copyright 2020 Canonical Ltd. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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|
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import asyncio |
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import logging |
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import os |
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import typing |
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import yaml |
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|
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import time |
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|
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import juju.errors |
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from juju.bundle import BundleHandler |
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from juju.model import Model |
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from juju.machine import Machine |
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from juju.application import Application |
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from juju.unit import Unit |
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from juju.url import URL |
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from juju.version import DEFAULT_ARCHITECTURE |
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from juju.client._definitions import ( |
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FullStatus, |
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QueryApplicationOffersResults, |
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Cloud, |
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CloudCredential, |
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) |
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from juju.controller import Controller |
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from juju.client import client |
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from juju import tag |
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|
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from n2vc.definitions import Offer, RelationEndpoint |
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from n2vc.juju_watcher import JujuModelWatcher |
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from n2vc.provisioner import AsyncSSHProvisioner |
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from n2vc.n2vc_conn import N2VCConnector |
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from n2vc.exceptions import ( |
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JujuMachineNotFound, |
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JujuApplicationNotFound, |
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JujuLeaderUnitNotFound, |
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JujuActionNotFound, |
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JujuControllerFailedConnecting, |
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JujuApplicationExists, |
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JujuInvalidK8sConfiguration, |
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JujuError, |
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) |
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from n2vc.vca.cloud import Cloud as VcaCloud |
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from n2vc.vca.connection import Connection |
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from kubernetes.client.configuration import Configuration |
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from retrying_async import retry |
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RBAC_LABEL_KEY_NAME = "rbac-id" |
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|
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|
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@asyncio.coroutine |
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def retry_callback(attempt, exc, args, kwargs, delay=0.5, *, loop): |
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# Specifically overridden from upstream implementation so it can |
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# continue to work with Python 3.10 |
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yield from asyncio.sleep(attempt * delay) |
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return retry |
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|
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|
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class Libjuju: |
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def __init__( |
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self, |
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vca_connection: Connection, |
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log: logging.Logger = None, |
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n2vc: N2VCConnector = None, |
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): |
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""" |
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Constructor |
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|
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:param: vca_connection: n2vc.vca.connection object |
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:param: log: Logger |
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:param: n2vc: N2VC object |
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""" |
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|
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self.log = log or logging.getLogger("Libjuju") |
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self.n2vc = n2vc |
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self.vca_connection = vca_connection |
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|
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self.creating_model = asyncio.Lock() |
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|
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if self.vca_connection.is_default: |
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self.health_check_task = self._create_health_check_task() |
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|
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def _create_health_check_task(self): |
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return asyncio.get_event_loop().create_task(self.health_check()) |
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|
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async def get_controller(self, timeout: float = 60.0) -> Controller: |
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""" |
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Get controller |
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|
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:param: timeout: Time in seconds to wait for controller to connect |
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""" |
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controller = None |
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try: |
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controller = Controller() |
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await asyncio.wait_for( |
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controller.connect( |
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endpoint=self.vca_connection.data.endpoints, |
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username=self.vca_connection.data.user, |
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password=self.vca_connection.data.secret, |
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cacert=self.vca_connection.data.cacert, |
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), |
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timeout=timeout, |
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) |
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if self.vca_connection.is_default: |
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endpoints = await controller.api_endpoints |
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if not all( |
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endpoint in self.vca_connection.endpoints for endpoint in endpoints |
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): |
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await self.vca_connection.update_endpoints(endpoints) |
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return controller |
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except asyncio.CancelledError as e: |
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raise e |
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except Exception as e: |
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self.log.error( |
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"Failed connecting to controller: {}... {}".format( |
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self.vca_connection.data.endpoints, e |
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) |
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) |
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if controller: |
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await self.disconnect_controller(controller) |
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|
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raise JujuControllerFailedConnecting( |
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f"Error connecting to Juju controller: {e}" |
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) |
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|
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async def disconnect(self): |
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"""Disconnect""" |
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# Cancel health check task |
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self.health_check_task.cancel() |
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self.log.debug("Libjuju disconnected!") |
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|
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async def disconnect_model(self, model: Model): |
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""" |
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Disconnect model |
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:param: model: Model that will be disconnected |
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""" |
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await model.disconnect() |
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async def disconnect_controller(self, controller: Controller): |
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""" |
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Disconnect controller |
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:param: controller: Controller that will be disconnected |
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""" |
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if controller: |
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await controller.disconnect() |
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|
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@retry(attempts=3, delay=5, timeout=None, callback=retry_callback) |
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async def add_model(self, model_name: str, cloud: VcaCloud): |
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""" |
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Create model |
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:param: model_name: Model name |
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:param: cloud: Cloud object |
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""" |
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# Get controller |
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controller = await self.get_controller() |
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model = None |
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try: |
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# Block until other workers have finished model creation |
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while self.creating_model.locked(): |
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await asyncio.sleep(0.1) |
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|
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# Create the model |
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async with self.creating_model: |
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if await self.model_exists(model_name, controller=controller): |
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return |
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self.log.debug("Creating model {}".format(model_name)) |
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model = await controller.add_model( |
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model_name, |
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config=self.vca_connection.data.model_config, |
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cloud_name=cloud.name, |
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credential_name=cloud.credential_name, |
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) |
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except juju.errors.JujuAPIError as e: |
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if "already exists" in e.message: |
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pass |
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else: |
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raise e |
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finally: |
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if model: |
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await self.disconnect_model(model) |
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await self.disconnect_controller(controller) |
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|
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async def get_executed_actions(self, model_name: str) -> list: |
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""" |
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Get executed/history of actions for a model. |
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:param: model_name: Model name, str. |
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:return: List of executed actions for a model. |
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""" |
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model = None |
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executed_actions = [] |
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controller = await self.get_controller() |
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try: |
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model = await self.get_model(controller, model_name) |
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# Get all unique action names |
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actions = {} |
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for application in model.applications: |
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application_actions = await self.get_actions(application, model_name) |
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actions.update(application_actions) |
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# Get status of all actions |
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for application_action in actions: |
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app_action_status_list = await model.get_action_status( |
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name=application_action |
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) |
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for action_id, action_status in app_action_status_list.items(): |
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executed_action = { |
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"id": action_id, |
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"action": application_action, |
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"status": action_status, |
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} |
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# Get action output by id |
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action_status = await model.get_action_output(executed_action["id"]) |
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for k, v in action_status.items(): |
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executed_action[k] = v |
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executed_actions.append(executed_action) |
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except Exception as e: |
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raise JujuError( |
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"Error in getting executed actions for model: {}. Error: {}".format( |
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model_name, str(e) |
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) |
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) |
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finally: |
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if model: |
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await self.disconnect_model(model) |
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await self.disconnect_controller(controller) |
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return executed_actions |
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|
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async def get_application_configs( |
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self, model_name: str, application_name: str |
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) -> dict: |
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""" |
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Get available configs for an application. |
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:param: model_name: Model name, str. |
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:param: application_name: Application name, str. |
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:return: A dict which has key - action name, value - action description |
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""" |
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model = None |
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application_configs = {} |
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controller = await self.get_controller() |
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try: |
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model = await self.get_model(controller, model_name) |
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application = self._get_application( |
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model, application_name=application_name |
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) |
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application_configs = await application.get_config() |
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except Exception as e: |
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raise JujuError( |
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"Error in getting configs for application: {} in model: {}. Error: {}".format( |
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application_name, model_name, str(e) |
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) |
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) |
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finally: |
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if model: |
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await self.disconnect_model(model) |
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await self.disconnect_controller(controller) |
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return application_configs |
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|
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@retry(attempts=3, delay=5, callback=retry_callback) |
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async def get_model(self, controller: Controller, model_name: str) -> Model: |
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""" |
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Get model from controller |
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:param: controller: Controller |
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:param: model_name: Model name |
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|
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:return: Model: The created Juju model object |
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""" |
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return await controller.get_model(model_name) |
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|
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async def model_exists( |
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self, model_name: str, controller: Controller = None |
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) -> bool: |
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""" |
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Check if model exists |
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:param: controller: Controller |
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:param: model_name: Model name |
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:return bool |
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""" |
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need_to_disconnect = False |
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|
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# Get controller if not passed |
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if not controller: |
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controller = await self.get_controller() |
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need_to_disconnect = True |
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|
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# Check if model exists |
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try: |
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return model_name in await controller.list_models() |
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finally: |
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if need_to_disconnect: |
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await self.disconnect_controller(controller) |
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|
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async def models_exist(self, model_names: [str]) -> (bool, list): |
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""" |
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Check if models exists |
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:param: model_names: List of strings with model names |
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|
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:return (bool, list[str]): (True if all models exists, List of model names that don't exist) |
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""" |
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if not model_names: |
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raise Exception( |
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"model_names must be a non-empty array. Given value: {}".format( |
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model_names |
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) |
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) |
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non_existing_models = [] |
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models = await self.list_models() |
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existing_models = list(set(models).intersection(model_names)) |
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non_existing_models = list(set(model_names) - set(existing_models)) |
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|
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return ( |
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len(non_existing_models) == 0, |
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non_existing_models, |
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) |
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|
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async def get_model_status(self, model_name: str) -> FullStatus: |
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""" |
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Get model status |
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|
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:param: model_name: Model name |
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|
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:return: Full status object |
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""" |
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controller = await self.get_controller() |
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model = await self.get_model(controller, model_name) |
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try: |
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return await model.get_status() |
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finally: |
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await self.disconnect_model(model) |
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await self.disconnect_controller(controller) |
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|
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async def create_machine( |
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self, |
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model_name: str, |
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machine_id: str = None, |
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db_dict: dict = None, |
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progress_timeout: float = None, |
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total_timeout: float = None, |
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series: str = "bionic", |
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wait: bool = True, |
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) -> (Machine, bool): |
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""" |
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Create machine |
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|
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:param: model_name: Model name |
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:param: machine_id: Machine id |
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:param: db_dict: Dictionary with data of the DB to write the updates |
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:param: progress_timeout: Maximum time between two updates in the model |
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:param: total_timeout: Timeout for the entity to be active |
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:param: series: Series of the machine (xenial, bionic, focal, ...) |
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:param: wait: Wait until machine is ready |
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|
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:return: (juju.machine.Machine, bool): Machine object and a boolean saying |
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if the machine is new or it already existed |
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""" |
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new = False |
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machine = None |
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|
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self.log.debug( |
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"Creating machine (id={}) in model: {}".format(machine_id, model_name) |
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) |
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|
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# Get controller |
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controller = await self.get_controller() |
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|
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# Get model |
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model = await self.get_model(controller, model_name) |
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try: |
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if machine_id is not None: |
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self.log.debug( |
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"Searching machine (id={}) in model {}".format( |
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machine_id, model_name |
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) |
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) |
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|
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# Get machines from model and get the machine with machine_id if exists |
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machines = await model.get_machines() |
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if machine_id in machines: |
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self.log.debug( |
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"Machine (id={}) found in model {}".format( |
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machine_id, model_name |
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) |
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) |
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machine = machines[machine_id] |
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else: |
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raise JujuMachineNotFound("Machine {} not found".format(machine_id)) |
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|
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if machine is None: |
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self.log.debug("Creating a new machine in model {}".format(model_name)) |
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|
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# Create machine |
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machine = await model.add_machine( |
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spec=None, constraints=None, disks=None, series=series |
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) |
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new = True |
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|
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# Wait until the machine is ready |
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self.log.debug( |
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"Wait until machine {} is ready in model {}".format( |
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machine.entity_id, model_name |
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) |
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) |
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if wait: |
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await JujuModelWatcher.wait_for( |
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model=model, |
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entity=machine, |
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progress_timeout=progress_timeout, |
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total_timeout=total_timeout, |
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db_dict=db_dict, |
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n2vc=self.n2vc, |
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vca_id=self.vca_connection._vca_id, |
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) |
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finally: |
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await self.disconnect_model(model) |
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await self.disconnect_controller(controller) |
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|
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self.log.debug( |
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"Machine {} ready at {} in model {}".format( |
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machine.entity_id, machine.dns_name, model_name |
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) |
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) |
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return machine, new |
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|
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async def provision_machine( |
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self, |
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model_name: str, |
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hostname: str, |
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username: str, |
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private_key_path: str, |
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db_dict: dict = None, |
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progress_timeout: float = None, |
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total_timeout: float = None, |
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) -> str: |
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""" |
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|
Manually provisioning of a machine |
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|
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:param: model_name: Model name |
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:param: hostname: IP to access the machine |
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:param: username: Username to login to the machine |
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:param: private_key_path: Local path for the private key |
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:param: db_dict: Dictionary with data of the DB to write the updates |
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:param: progress_timeout: Maximum time between two updates in the model |
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:param: total_timeout: Timeout for the entity to be active |
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|
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:return: (Entity): Machine id |
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""" |
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self.log.debug( |
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"Provisioning machine. model: {}, hostname: {}, username: {}".format( |
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model_name, hostname, username |
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) |
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) |
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|
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# Get controller |
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controller = await self.get_controller() |
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|
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# Get model |
479 |
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model = await self.get_model(controller, model_name) |
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|
481 |
0 |
try: |
482 |
|
# Get provisioner |
483 |
0 |
provisioner = AsyncSSHProvisioner( |
484 |
|
host=hostname, |
485 |
|
user=username, |
486 |
|
private_key_path=private_key_path, |
487 |
|
log=self.log, |
488 |
|
) |
489 |
|
|
490 |
|
# Provision machine |
491 |
0 |
params = await provisioner.provision_machine() |
492 |
|
|
493 |
0 |
params.jobs = ["JobHostUnits"] |
494 |
|
|
495 |
0 |
self.log.debug("Adding machine to model") |
496 |
0 |
connection = model.connection() |
497 |
0 |
client_facade = client.ClientFacade.from_connection(connection) |
498 |
|
|
499 |
0 |
results = await client_facade.AddMachines(params=[params]) |
500 |
0 |
error = results.machines[0].error |
501 |
|
|
502 |
0 |
if error: |
503 |
0 |
msg = "Error adding machine: {}".format(error.message) |
504 |
0 |
self.log.error(msg=msg) |
505 |
0 |
raise ValueError(msg) |
506 |
|
|
507 |
0 |
machine_id = results.machines[0].machine |
508 |
|
|
509 |
0 |
self.log.debug("Installing Juju agent into machine {}".format(machine_id)) |
510 |
0 |
asyncio.ensure_future( |
511 |
|
provisioner.install_agent( |
512 |
|
connection=connection, |
513 |
|
nonce=params.nonce, |
514 |
|
machine_id=machine_id, |
515 |
|
proxy=self.vca_connection.data.api_proxy, |
516 |
|
series=params.series, |
517 |
|
) |
518 |
|
) |
519 |
|
|
520 |
0 |
machine = None |
521 |
0 |
for _ in range(10): |
522 |
0 |
machine_list = await model.get_machines() |
523 |
0 |
if machine_id in machine_list: |
524 |
0 |
self.log.debug("Machine {} found in model!".format(machine_id)) |
525 |
0 |
machine = model.machines.get(machine_id) |
526 |
0 |
break |
527 |
0 |
await asyncio.sleep(2) |
528 |
|
|
529 |
0 |
if machine is None: |
530 |
0 |
msg = "Machine {} not found in model".format(machine_id) |
531 |
0 |
self.log.error(msg=msg) |
532 |
0 |
raise JujuMachineNotFound(msg) |
533 |
|
|
534 |
0 |
self.log.debug( |
535 |
|
"Wait until machine {} is ready in model {}".format( |
536 |
|
machine.entity_id, model_name |
537 |
|
) |
538 |
|
) |
539 |
0 |
await JujuModelWatcher.wait_for( |
540 |
|
model=model, |
541 |
|
entity=machine, |
542 |
|
progress_timeout=progress_timeout, |
543 |
|
total_timeout=total_timeout, |
544 |
|
db_dict=db_dict, |
545 |
|
n2vc=self.n2vc, |
546 |
|
vca_id=self.vca_connection._vca_id, |
547 |
|
) |
548 |
0 |
except Exception as e: |
549 |
0 |
raise e |
550 |
|
finally: |
551 |
0 |
await self.disconnect_model(model) |
552 |
0 |
await self.disconnect_controller(controller) |
553 |
|
|
554 |
0 |
self.log.debug( |
555 |
|
"Machine provisioned {} in model {}".format(machine_id, model_name) |
556 |
|
) |
557 |
|
|
558 |
0 |
return machine_id |
559 |
|
|
560 |
1 |
async def deploy( |
561 |
|
self, |
562 |
|
uri: str, |
563 |
|
model_name: str, |
564 |
|
wait: bool = True, |
565 |
|
timeout: float = 3600, |
566 |
|
instantiation_params: dict = None, |
567 |
|
): |
568 |
|
""" |
569 |
|
Deploy bundle or charm: Similar to the juju CLI command `juju deploy` |
570 |
|
|
571 |
|
:param uri: Path or Charm Store uri in which the charm or bundle can be found |
572 |
|
:param model_name: Model name |
573 |
|
:param wait: Indicates whether to wait or not until all applications are active |
574 |
|
:param timeout: Time in seconds to wait until all applications are active |
575 |
|
:param instantiation_params: To be applied as overlay bundle over primary bundle. |
576 |
|
""" |
577 |
1 |
controller = await self.get_controller() |
578 |
1 |
model = await self.get_model(controller, model_name) |
579 |
1 |
overlays = [] |
580 |
1 |
try: |
581 |
1 |
await self._validate_instantiation_params(uri, model, instantiation_params) |
582 |
1 |
overlays = self._get_overlays(model_name, instantiation_params) |
583 |
1 |
await model.deploy(uri, trust=True, overlays=overlays) |
584 |
1 |
if wait: |
585 |
1 |
await JujuModelWatcher.wait_for_model(model, timeout=timeout) |
586 |
1 |
self.log.debug("All units active in model {}".format(model_name)) |
587 |
|
finally: |
588 |
1 |
self._remove_overlay_file(overlays) |
589 |
1 |
await self.disconnect_model(model) |
590 |
1 |
await self.disconnect_controller(controller) |
591 |
|
|
592 |
1 |
async def _validate_instantiation_params( |
593 |
|
self, uri: str, model, instantiation_params: dict |
594 |
|
) -> None: |
595 |
|
"""Checks if all the applications in instantiation_params |
596 |
|
exist ins the original bundle. |
597 |
|
|
598 |
|
Raises: |
599 |
|
JujuApplicationNotFound if there is an invalid app in |
600 |
|
the instantiation params. |
601 |
|
""" |
602 |
1 |
overlay_apps = self._get_apps_in_instantiation_params(instantiation_params) |
603 |
1 |
if not overlay_apps: |
604 |
1 |
return |
605 |
1 |
original_apps = await self._get_apps_in_original_bundle(uri, model) |
606 |
1 |
if not all(app in original_apps for app in overlay_apps): |
607 |
1 |
raise JujuApplicationNotFound( |
608 |
|
"Cannot find application {} in original bundle {}".format( |
609 |
|
overlay_apps, original_apps |
610 |
|
) |
611 |
|
) |
612 |
|
|
613 |
1 |
async def _get_apps_in_original_bundle(self, uri: str, model) -> set: |
614 |
|
"""Bundle is downloaded in BundleHandler.fetch_plan. |
615 |
|
That method takes care of opening and exception handling. |
616 |
|
|
617 |
|
Resolve method gets all the information regarding the channel, |
618 |
|
track, revision, type, source. |
619 |
|
|
620 |
|
Returns: |
621 |
|
Set with the names of the applications in original bundle. |
622 |
|
""" |
623 |
1 |
url = URL.parse(uri) |
624 |
1 |
architecture = DEFAULT_ARCHITECTURE # only AMD64 is allowed |
625 |
1 |
res = await model.deploy_types[str(url.schema)].resolve( |
626 |
|
url, architecture, entity_url=uri |
627 |
|
) |
628 |
1 |
handler = BundleHandler(model, trusted=True, forced=False) |
629 |
1 |
await handler.fetch_plan(url, res.origin) |
630 |
1 |
return handler.applications |
631 |
|
|
632 |
1 |
def _get_apps_in_instantiation_params(self, instantiation_params: dict) -> list: |
633 |
|
"""Extract applications key in instantiation params. |
634 |
|
|
635 |
|
Returns: |
636 |
|
List with the names of the applications in instantiation params. |
637 |
|
|
638 |
|
Raises: |
639 |
|
JujuError if applications key is not found. |
640 |
|
""" |
641 |
1 |
if not instantiation_params: |
642 |
1 |
return [] |
643 |
1 |
try: |
644 |
1 |
return [key for key in instantiation_params.get("applications")] |
645 |
1 |
except Exception as e: |
646 |
1 |
raise JujuError("Invalid overlay format. {}".format(str(e))) |
647 |
|
|
648 |
1 |
def _get_overlays(self, model_name: str, instantiation_params: dict) -> list: |
649 |
|
"""Creates a temporary overlay file which includes the instantiation params. |
650 |
|
Only one overlay file is created. |
651 |
|
|
652 |
|
Returns: |
653 |
|
List with one overlay filename. Empty list if there are no instantiation params. |
654 |
|
""" |
655 |
1 |
if not instantiation_params: |
656 |
1 |
return [] |
657 |
1 |
file_name = model_name + "-overlay.yaml" |
658 |
1 |
self._write_overlay_file(file_name, instantiation_params) |
659 |
1 |
return [file_name] |
660 |
|
|
661 |
1 |
def _write_overlay_file(self, file_name: str, instantiation_params: dict) -> None: |
662 |
1 |
with open(file_name, "w") as file: |
663 |
1 |
yaml.dump(instantiation_params, file) |
664 |
|
|
665 |
1 |
def _remove_overlay_file(self, overlay: list) -> None: |
666 |
|
"""Overlay contains either one or zero file names.""" |
667 |
1 |
if not overlay: |
668 |
1 |
return |
669 |
1 |
try: |
670 |
1 |
filename = overlay[0] |
671 |
1 |
os.remove(filename) |
672 |
1 |
except OSError as e: |
673 |
1 |
self.log.warning( |
674 |
|
"Overlay file {} could not be removed: {}".format(filename, e) |
675 |
|
) |
676 |
|
|
677 |
1 |
async def add_unit( |
678 |
|
self, |
679 |
|
application_name: str, |
680 |
|
model_name: str, |
681 |
|
machine_id: str, |
682 |
|
db_dict: dict = None, |
683 |
|
progress_timeout: float = None, |
684 |
|
total_timeout: float = None, |
685 |
|
): |
686 |
|
"""Add unit |
687 |
|
|
688 |
|
:param: application_name: Application name |
689 |
|
:param: model_name: Model name |
690 |
|
:param: machine_id Machine id |
691 |
|
:param: db_dict: Dictionary with data of the DB to write the updates |
692 |
|
:param: progress_timeout: Maximum time between two updates in the model |
693 |
|
:param: total_timeout: Timeout for the entity to be active |
694 |
|
|
695 |
|
:return: None |
696 |
|
""" |
697 |
|
|
698 |
1 |
model = None |
699 |
1 |
controller = await self.get_controller() |
700 |
1 |
try: |
701 |
1 |
model = await self.get_model(controller, model_name) |
702 |
1 |
application = self._get_application(model, application_name) |
703 |
|
|
704 |
1 |
if application is not None: |
705 |
|
# Checks if the given machine id in the model, |
706 |
|
# otherwise function raises an error |
707 |
1 |
_machine, _series = self._get_machine_info(model, machine_id) |
708 |
|
|
709 |
1 |
self.log.debug( |
710 |
|
"Adding unit (machine {}) to application {} in model ~{}".format( |
711 |
|
machine_id, application_name, model_name |
712 |
|
) |
713 |
|
) |
714 |
|
|
715 |
1 |
await application.add_unit(to=machine_id) |
716 |
|
|
717 |
1 |
await JujuModelWatcher.wait_for( |
718 |
|
model=model, |
719 |
|
entity=application, |
720 |
|
progress_timeout=progress_timeout, |
721 |
|
total_timeout=total_timeout, |
722 |
|
db_dict=db_dict, |
723 |
|
n2vc=self.n2vc, |
724 |
|
vca_id=self.vca_connection._vca_id, |
725 |
|
) |
726 |
1 |
self.log.debug( |
727 |
|
"Unit is added to application {} in model {}".format( |
728 |
|
application_name, model_name |
729 |
|
) |
730 |
|
) |
731 |
|
else: |
732 |
1 |
raise JujuApplicationNotFound( |
733 |
|
"Application {} not exists".format(application_name) |
734 |
|
) |
735 |
|
finally: |
736 |
1 |
if model: |
737 |
1 |
await self.disconnect_model(model) |
738 |
1 |
await self.disconnect_controller(controller) |
739 |
|
|
740 |
1 |
async def destroy_unit( |
741 |
|
self, |
742 |
|
application_name: str, |
743 |
|
model_name: str, |
744 |
|
machine_id: str, |
745 |
|
total_timeout: float = None, |
746 |
|
): |
747 |
|
"""Destroy unit |
748 |
|
|
749 |
|
:param: application_name: Application name |
750 |
|
:param: model_name: Model name |
751 |
|
:param: machine_id Machine id |
752 |
|
:param: total_timeout: Timeout for the entity to be active |
753 |
|
|
754 |
|
:return: None |
755 |
|
""" |
756 |
|
|
757 |
1 |
model = None |
758 |
1 |
controller = await self.get_controller() |
759 |
1 |
try: |
760 |
1 |
model = await self.get_model(controller, model_name) |
761 |
1 |
application = self._get_application(model, application_name) |
762 |
|
|
763 |
1 |
if application is None: |
764 |
1 |
raise JujuApplicationNotFound( |
765 |
|
"Application not found: {} (model={})".format( |
766 |
|
application_name, model_name |
767 |
|
) |
768 |
|
) |
769 |
|
|
770 |
1 |
unit = self._get_unit(application, machine_id) |
771 |
1 |
if not unit: |
772 |
1 |
raise JujuError( |
773 |
|
"A unit with machine id {} not in available units".format( |
774 |
|
machine_id |
775 |
|
) |
776 |
|
) |
777 |
|
|
778 |
1 |
unit_name = unit.name |
779 |
|
|
780 |
1 |
self.log.debug( |
781 |
|
"Destroying unit {} from application {} in model {}".format( |
782 |
|
unit_name, application_name, model_name |
783 |
|
) |
784 |
|
) |
785 |
1 |
await application.destroy_unit(unit_name) |
786 |
|
|
787 |
1 |
self.log.debug( |
788 |
|
"Waiting for unit {} to be destroyed in application {} (model={})...".format( |
789 |
|
unit_name, application_name, model_name |
790 |
|
) |
791 |
|
) |
792 |
|
|
793 |
|
# TODO: Add functionality in the Juju watcher to replace this kind of blocks |
794 |
1 |
if total_timeout is None: |
795 |
0 |
total_timeout = 3600 |
796 |
1 |
end = time.time() + total_timeout |
797 |
1 |
while time.time() < end: |
798 |
0 |
if not self._get_unit(application, machine_id): |
799 |
0 |
self.log.debug( |
800 |
|
"The unit {} was destroyed in application {} (model={}) ".format( |
801 |
|
unit_name, application_name, model_name |
802 |
|
) |
803 |
|
) |
804 |
0 |
return |
805 |
0 |
await asyncio.sleep(5) |
806 |
1 |
self.log.debug( |
807 |
|
"Unit {} is destroyed from application {} in model {}".format( |
808 |
|
unit_name, application_name, model_name |
809 |
|
) |
810 |
|
) |
811 |
|
finally: |
812 |
1 |
if model: |
813 |
1 |
await self.disconnect_model(model) |
814 |
1 |
await self.disconnect_controller(controller) |
815 |
|
|
816 |
1 |
async def deploy_charm( |
817 |
|
self, |
818 |
|
application_name: str, |
819 |
|
path: str, |
820 |
|
model_name: str, |
821 |
|
machine_id: str, |
822 |
|
db_dict: dict = None, |
823 |
|
progress_timeout: float = None, |
824 |
|
total_timeout: float = None, |
825 |
|
config: dict = None, |
826 |
|
series: str = None, |
827 |
|
num_units: int = 1, |
828 |
|
): |
829 |
|
"""Deploy charm |
830 |
|
|
831 |
|
:param: application_name: Application name |
832 |
|
:param: path: Local path to the charm |
833 |
|
:param: model_name: Model name |
834 |
|
:param: machine_id ID of the machine |
835 |
|
:param: db_dict: Dictionary with data of the DB to write the updates |
836 |
|
:param: progress_timeout: Maximum time between two updates in the model |
837 |
|
:param: total_timeout: Timeout for the entity to be active |
838 |
|
:param: config: Config for the charm |
839 |
|
:param: series: Series of the charm |
840 |
|
:param: num_units: Number of units |
841 |
|
|
842 |
|
:return: (juju.application.Application): Juju application |
843 |
|
""" |
844 |
1 |
self.log.debug( |
845 |
|
"Deploying charm {} to machine {} in model ~{}".format( |
846 |
|
application_name, machine_id, model_name |
847 |
|
) |
848 |
|
) |
849 |
1 |
self.log.debug("charm: {}".format(path)) |
850 |
|
|
851 |
|
# Get controller |
852 |
1 |
controller = await self.get_controller() |
853 |
|
|
854 |
|
# Get model |
855 |
1 |
model = await self.get_model(controller, model_name) |
856 |
|
|
857 |
1 |
try: |
858 |
1 |
if application_name not in model.applications: |
859 |
1 |
if machine_id is not None: |
860 |
1 |
machine, series = self._get_machine_info(model, machine_id) |
861 |
|
|
862 |
1 |
application = await model.deploy( |
863 |
|
entity_url=path, |
864 |
|
application_name=application_name, |
865 |
|
channel="stable", |
866 |
|
num_units=1, |
867 |
|
series=series, |
868 |
|
to=machine_id, |
869 |
|
config=config, |
870 |
|
) |
871 |
|
|
872 |
1 |
self.log.debug( |
873 |
|
"Wait until application {} is ready in model {}".format( |
874 |
|
application_name, model_name |
875 |
|
) |
876 |
|
) |
877 |
1 |
if num_units > 1: |
878 |
1 |
for _ in range(num_units - 1): |
879 |
1 |
m, _ = await self.create_machine(model_name, wait=False) |
880 |
1 |
await application.add_unit(to=m.entity_id) |
881 |
|
|
882 |
1 |
await JujuModelWatcher.wait_for( |
883 |
|
model=model, |
884 |
|
entity=application, |
885 |
|
progress_timeout=progress_timeout, |
886 |
|
total_timeout=total_timeout, |
887 |
|
db_dict=db_dict, |
888 |
|
n2vc=self.n2vc, |
889 |
|
vca_id=self.vca_connection._vca_id, |
890 |
|
) |
891 |
1 |
self.log.debug( |
892 |
|
"Application {} is ready in model {}".format( |
893 |
|
application_name, model_name |
894 |
|
) |
895 |
|
) |
896 |
|
else: |
897 |
1 |
raise JujuApplicationExists( |
898 |
|
"Application {} exists".format(application_name) |
899 |
|
) |
900 |
1 |
except juju.errors.JujuError as e: |
901 |
0 |
if "already exists" in e.message: |
902 |
0 |
raise JujuApplicationExists( |
903 |
|
"Application {} exists".format(application_name) |
904 |
|
) |
905 |
|
else: |
906 |
0 |
raise e |
907 |
|
finally: |
908 |
1 |
await self.disconnect_model(model) |
909 |
1 |
await self.disconnect_controller(controller) |
910 |
|
|
911 |
1 |
return application |
912 |
|
|
913 |
1 |
async def upgrade_charm( |
914 |
|
self, |
915 |
|
application_name: str, |
916 |
|
path: str, |
917 |
|
model_name: str, |
918 |
|
total_timeout: float = None, |
919 |
|
**kwargs, |
920 |
|
): |
921 |
|
"""Upgrade Charm |
922 |
|
|
923 |
|
:param: application_name: Application name |
924 |
|
:param: model_name: Model name |
925 |
|
:param: path: Local path to the charm |
926 |
|
:param: total_timeout: Timeout for the entity to be active |
927 |
|
|
928 |
|
:return: (str, str): (output and status) |
929 |
|
""" |
930 |
|
|
931 |
0 |
self.log.debug( |
932 |
|
"Upgrading charm {} in model {} from path {}".format( |
933 |
|
application_name, model_name, path |
934 |
|
) |
935 |
|
) |
936 |
|
|
937 |
0 |
await self.resolve_application( |
938 |
|
model_name=model_name, application_name=application_name |
939 |
|
) |
940 |
|
|
941 |
|
# Get controller |
942 |
0 |
controller = await self.get_controller() |
943 |
|
|
944 |
|
# Get model |
945 |
0 |
model = await self.get_model(controller, model_name) |
946 |
|
|
947 |
0 |
try: |
948 |
|
# Get application |
949 |
0 |
application = self._get_application( |
950 |
|
model, |
951 |
|
application_name=application_name, |
952 |
|
) |
953 |
0 |
if application is None: |
954 |
0 |
raise JujuApplicationNotFound( |
955 |
|
"Cannot find application {} to upgrade".format(application_name) |
956 |
|
) |
957 |
|
|
958 |
0 |
await application.refresh(path=path) |
959 |
|
|
960 |
0 |
self.log.debug( |
961 |
|
"Wait until charm upgrade is completed for application {} (model={})".format( |
962 |
|
application_name, model_name |
963 |
|
) |
964 |
|
) |
965 |
|
|
966 |
0 |
await JujuModelWatcher.ensure_units_idle( |
967 |
|
model=model, application=application |
968 |
|
) |
969 |
|
|
970 |
0 |
if application.status == "error": |
971 |
0 |
error_message = "Unknown" |
972 |
0 |
for unit in application.units: |
973 |
0 |
if ( |
974 |
|
unit.workload_status == "error" |
975 |
|
and unit.workload_status_message != "" |
976 |
|
): |
977 |
0 |
error_message = unit.workload_status_message |
978 |
|
|
979 |
0 |
message = "Application {} failed update in {}: {}".format( |
980 |
|
application_name, model_name, error_message |
981 |
|
) |
982 |
0 |
self.log.error(message) |
983 |
0 |
raise JujuError(message=message) |
984 |
|
|
985 |
0 |
self.log.debug( |
986 |
|
"Application {} is ready in model {}".format( |
987 |
|
application_name, model_name |
988 |
|
) |
989 |
|
) |
990 |
|
|
991 |
|
finally: |
992 |
0 |
await self.disconnect_model(model) |
993 |
0 |
await self.disconnect_controller(controller) |
994 |
|
|
995 |
0 |
return application |
996 |
|
|
997 |
1 |
async def resolve_application(self, model_name: str, application_name: str): |
998 |
0 |
controller = await self.get_controller() |
999 |
0 |
model = await self.get_model(controller, model_name) |
1000 |
|
|
1001 |
0 |
try: |
1002 |
0 |
application = self._get_application( |
1003 |
|
model, |
1004 |
|
application_name=application_name, |
1005 |
|
) |
1006 |
0 |
if application is None: |
1007 |
0 |
raise JujuApplicationNotFound( |
1008 |
|
"Cannot find application {} to resolve".format(application_name) |
1009 |
|
) |
1010 |
|
|
1011 |
0 |
while application.status == "error": |
1012 |
0 |
for unit in application.units: |
1013 |
0 |
if unit.workload_status == "error": |
1014 |
0 |
self.log.debug( |
1015 |
|
"Model {}, Application {}, Unit {} in error state, resolving".format( |
1016 |
|
model_name, application_name, unit.entity_id |
1017 |
|
) |
1018 |
|
) |
1019 |
0 |
try: |
1020 |
0 |
await unit.resolved(retry=False) |
1021 |
0 |
except Exception: |
1022 |
0 |
pass |
1023 |
|
|
1024 |
0 |
await asyncio.sleep(1) |
1025 |
|
|
1026 |
|
finally: |
1027 |
0 |
await self.disconnect_model(model) |
1028 |
0 |
await self.disconnect_controller(controller) |
1029 |
|
|
1030 |
1 |
async def resolve(self, model_name: str): |
1031 |
0 |
controller = await self.get_controller() |
1032 |
0 |
model = await self.get_model(controller, model_name) |
1033 |
0 |
all_units_active = False |
1034 |
0 |
try: |
1035 |
0 |
while not all_units_active: |
1036 |
0 |
all_units_active = True |
1037 |
0 |
for application_name, application in model.applications.items(): |
1038 |
0 |
if application.status == "error": |
1039 |
0 |
for unit in application.units: |
1040 |
0 |
if unit.workload_status == "error": |
1041 |
0 |
self.log.debug( |
1042 |
|
"Model {}, Application {}, Unit {} in error state, resolving".format( |
1043 |
|
model_name, application_name, unit.entity_id |
1044 |
|
) |
1045 |
|
) |
1046 |
0 |
try: |
1047 |
0 |
await unit.resolved(retry=False) |
1048 |
0 |
all_units_active = False |
1049 |
0 |
except Exception: |
1050 |
0 |
pass |
1051 |
|
|
1052 |
0 |
if not all_units_active: |
1053 |
0 |
await asyncio.sleep(5) |
1054 |
|
finally: |
1055 |
0 |
await self.disconnect_model(model) |
1056 |
0 |
await self.disconnect_controller(controller) |
1057 |
|
|
1058 |
1 |
async def scale_application( |
1059 |
|
self, |
1060 |
|
model_name: str, |
1061 |
|
application_name: str, |
1062 |
|
scale: int = 1, |
1063 |
|
total_timeout: float = None, |
1064 |
|
): |
1065 |
|
""" |
1066 |
|
Scale application (K8s) |
1067 |
|
|
1068 |
|
:param: model_name: Model name |
1069 |
|
:param: application_name: Application name |
1070 |
|
:param: scale: Scale to which to set this application |
1071 |
|
:param: total_timeout: Timeout for the entity to be active |
1072 |
|
""" |
1073 |
|
|
1074 |
1 |
model = None |
1075 |
1 |
controller = await self.get_controller() |
1076 |
1 |
try: |
1077 |
1 |
model = await self.get_model(controller, model_name) |
1078 |
|
|
1079 |
1 |
self.log.debug( |
1080 |
|
"Scaling application {} in model {}".format( |
1081 |
|
application_name, model_name |
1082 |
|
) |
1083 |
|
) |
1084 |
1 |
application = self._get_application(model, application_name) |
1085 |
1 |
if application is None: |
1086 |
1 |
raise JujuApplicationNotFound("Cannot scale application") |
1087 |
1 |
await application.scale(scale=scale) |
1088 |
|
# Wait until application is scaled in model |
1089 |
1 |
self.log.debug( |
1090 |
|
"Waiting for application {} to be scaled in model {}...".format( |
1091 |
|
application_name, model_name |
1092 |
|
) |
1093 |
|
) |
1094 |
1 |
if total_timeout is None: |
1095 |
1 |
total_timeout = 1800 |
1096 |
1 |
end = time.time() + total_timeout |
1097 |
1 |
while time.time() < end: |
1098 |
1 |
application_scale = self._get_application_count(model, application_name) |
1099 |
|
# Before calling wait_for_model function, |
1100 |
|
# wait until application unit count and scale count are equal. |
1101 |
|
# Because there is a delay before scaling triggers in Juju model. |
1102 |
1 |
if application_scale == scale: |
1103 |
1 |
await JujuModelWatcher.wait_for_model( |
1104 |
|
model=model, timeout=total_timeout |
1105 |
|
) |
1106 |
1 |
self.log.debug( |
1107 |
|
"Application {} is scaled in model {}".format( |
1108 |
|
application_name, model_name |
1109 |
|
) |
1110 |
|
) |
1111 |
1 |
return |
1112 |
0 |
await asyncio.sleep(5) |
1113 |
1 |
raise Exception( |
1114 |
|
"Timeout waiting for application {} in model {} to be scaled".format( |
1115 |
|
application_name, model_name |
1116 |
|
) |
1117 |
|
) |
1118 |
|
finally: |
1119 |
1 |
if model: |
1120 |
1 |
await self.disconnect_model(model) |
1121 |
1 |
await self.disconnect_controller(controller) |
1122 |
|
|
1123 |
1 |
def _get_application_count(self, model: Model, application_name: str) -> int: |
1124 |
|
"""Get number of units of the application |
1125 |
|
|
1126 |
|
:param: model: Model object |
1127 |
|
:param: application_name: Application name |
1128 |
|
|
1129 |
|
:return: int (or None if application doesn't exist) |
1130 |
|
""" |
1131 |
1 |
application = self._get_application(model, application_name) |
1132 |
1 |
if application is not None: |
1133 |
1 |
return len(application.units) |
1134 |
|
|
1135 |
1 |
def _get_application(self, model: Model, application_name: str) -> Application: |
1136 |
|
"""Get application |
1137 |
|
|
1138 |
|
:param: model: Model object |
1139 |
|
:param: application_name: Application name |
1140 |
|
|
1141 |
|
:return: juju.application.Application (or None if it doesn't exist) |
1142 |
|
""" |
1143 |
1 |
if model.applications and application_name in model.applications: |
1144 |
1 |
return model.applications[application_name] |
1145 |
|
|
1146 |
1 |
def _get_unit(self, application: Application, machine_id: str) -> Unit: |
1147 |
|
"""Get unit |
1148 |
|
|
1149 |
|
:param: application: Application object |
1150 |
|
:param: machine_id: Machine id |
1151 |
|
|
1152 |
|
:return: Unit |
1153 |
|
""" |
1154 |
1 |
unit = None |
1155 |
1 |
for u in application.units: |
1156 |
1 |
if u.machine_id == machine_id: |
1157 |
1 |
unit = u |
1158 |
1 |
break |
1159 |
1 |
return unit |
1160 |
|
|
1161 |
1 |
def _get_machine_info( |
1162 |
|
self, |
1163 |
|
model, |
1164 |
|
machine_id: str, |
1165 |
|
) -> (str, str): |
1166 |
|
"""Get machine info |
1167 |
|
|
1168 |
|
:param: model: Model object |
1169 |
|
:param: machine_id: Machine id |
1170 |
|
|
1171 |
|
:return: (str, str): (machine, series) |
1172 |
|
""" |
1173 |
1 |
if machine_id not in model.machines: |
1174 |
1 |
msg = "Machine {} not found in model".format(machine_id) |
1175 |
1 |
self.log.error(msg=msg) |
1176 |
1 |
raise JujuMachineNotFound(msg) |
1177 |
1 |
machine = model.machines[machine_id] |
1178 |
1 |
return machine, machine.series |
1179 |
|
|
1180 |
1 |
async def execute_action( |
1181 |
|
self, |
1182 |
|
application_name: str, |
1183 |
|
model_name: str, |
1184 |
|
action_name: str, |
1185 |
|
db_dict: dict = None, |
1186 |
|
machine_id: str = None, |
1187 |
|
progress_timeout: float = None, |
1188 |
|
total_timeout: float = None, |
1189 |
|
**kwargs, |
1190 |
|
): |
1191 |
|
"""Execute action |
1192 |
|
|
1193 |
|
:param: application_name: Application name |
1194 |
|
:param: model_name: Model name |
1195 |
|
:param: action_name: Name of the action |
1196 |
|
:param: db_dict: Dictionary with data of the DB to write the updates |
1197 |
|
:param: machine_id Machine id |
1198 |
|
:param: progress_timeout: Maximum time between two updates in the model |
1199 |
|
:param: total_timeout: Timeout for the entity to be active |
1200 |
|
|
1201 |
|
:return: (str, str): (output and status) |
1202 |
|
""" |
1203 |
1 |
self.log.debug( |
1204 |
|
"Executing action {} using params {}".format(action_name, kwargs) |
1205 |
|
) |
1206 |
|
# Get controller |
1207 |
1 |
controller = await self.get_controller() |
1208 |
|
|
1209 |
|
# Get model |
1210 |
1 |
model = await self.get_model(controller, model_name) |
1211 |
|
|
1212 |
1 |
try: |
1213 |
|
# Get application |
1214 |
1 |
application = self._get_application( |
1215 |
|
model, |
1216 |
|
application_name=application_name, |
1217 |
|
) |
1218 |
1 |
if application is None: |
1219 |
1 |
raise JujuApplicationNotFound("Cannot execute action") |
1220 |
|
# Racing condition: |
1221 |
|
# Ocassionally, self._get_leader_unit() will return None |
1222 |
|
# because the leader elected hook has not been triggered yet. |
1223 |
|
# Therefore, we are doing some retries. If it happens again, |
1224 |
|
# re-open bug 1236 |
1225 |
1 |
if machine_id is None: |
1226 |
1 |
unit = await self._get_leader_unit(application) |
1227 |
1 |
self.log.debug( |
1228 |
|
"Action {} is being executed on the leader unit {}".format( |
1229 |
|
action_name, unit.name |
1230 |
|
) |
1231 |
|
) |
1232 |
|
else: |
1233 |
0 |
unit = self._get_unit(application, machine_id) |
1234 |
0 |
if not unit: |
1235 |
0 |
raise JujuError( |
1236 |
|
"A unit with machine id {} not in available units".format( |
1237 |
|
machine_id |
1238 |
|
) |
1239 |
|
) |
1240 |
0 |
self.log.debug( |
1241 |
|
"Action {} is being executed on {} unit".format( |
1242 |
|
action_name, unit.name |
1243 |
|
) |
1244 |
|
) |
1245 |
|
|
1246 |
1 |
actions = await application.get_actions() |
1247 |
|
|
1248 |
1 |
if action_name not in actions: |
1249 |
1 |
raise JujuActionNotFound( |
1250 |
|
"Action {} not in available actions".format(action_name) |
1251 |
|
) |
1252 |
|
|
1253 |
1 |
action = await unit.run_action(action_name, **kwargs) |
1254 |
|
|
1255 |
1 |
self.log.debug( |
1256 |
|
"Wait until action {} is completed in application {} (model={})".format( |
1257 |
|
action_name, application_name, model_name |
1258 |
|
) |
1259 |
|
) |
1260 |
1 |
await JujuModelWatcher.wait_for( |
1261 |
|
model=model, |
1262 |
|
entity=action, |
1263 |
|
progress_timeout=progress_timeout, |
1264 |
|
total_timeout=total_timeout, |
1265 |
|
db_dict=db_dict, |
1266 |
|
n2vc=self.n2vc, |
1267 |
|
vca_id=self.vca_connection._vca_id, |
1268 |
|
) |
1269 |
|
|
1270 |
1 |
output = await model.get_action_output(action_uuid=action.entity_id) |
1271 |
1 |
status = await model.get_action_status(uuid_or_prefix=action.entity_id) |
1272 |
1 |
status = ( |
1273 |
|
status[action.entity_id] if action.entity_id in status else "failed" |
1274 |
|
) |
1275 |
|
|
1276 |
1 |
self.log.debug( |
1277 |
|
"Action {} completed with status {} in application {} (model={})".format( |
1278 |
|
action_name, action.status, application_name, model_name |
1279 |
|
) |
1280 |
|
) |
1281 |
|
finally: |
1282 |
1 |
await self.disconnect_model(model) |
1283 |
1 |
await self.disconnect_controller(controller) |
1284 |
|
|
1285 |
1 |
return output, status |
1286 |
|
|
1287 |
1 |
async def get_actions(self, application_name: str, model_name: str) -> dict: |
1288 |
|
"""Get list of actions |
1289 |
|
|
1290 |
|
:param: application_name: Application name |
1291 |
|
:param: model_name: Model name |
1292 |
|
|
1293 |
|
:return: Dict with this format |
1294 |
|
{ |
1295 |
|
"action_name": "Description of the action", |
1296 |
|
... |
1297 |
|
} |
1298 |
|
""" |
1299 |
1 |
self.log.debug( |
1300 |
|
"Getting list of actions for application {}".format(application_name) |
1301 |
|
) |
1302 |
|
|
1303 |
|
# Get controller |
1304 |
1 |
controller = await self.get_controller() |
1305 |
|
|
1306 |
|
# Get model |
1307 |
1 |
model = await self.get_model(controller, model_name) |
1308 |
|
|
1309 |
1 |
try: |
1310 |
|
# Get application |
1311 |
1 |
application = self._get_application( |
1312 |
|
model, |
1313 |
|
application_name=application_name, |
1314 |
|
) |
1315 |
|
|
1316 |
|
# Return list of actions |
1317 |
1 |
return await application.get_actions() |
1318 |
|
|
1319 |
|
finally: |
1320 |
|
# Disconnect from model and controller |
1321 |
1 |
await self.disconnect_model(model) |
1322 |
1 |
await self.disconnect_controller(controller) |
1323 |
|
|
1324 |
1 |
async def get_metrics(self, model_name: str, application_name: str) -> dict: |
1325 |
|
"""Get the metrics collected by the VCA. |
1326 |
|
|
1327 |
|
:param model_name The name or unique id of the network service |
1328 |
|
:param application_name The name of the application |
1329 |
|
""" |
1330 |
1 |
if not model_name or not application_name: |
1331 |
1 |
raise Exception("model_name and application_name must be non-empty strings") |
1332 |
1 |
metrics = {} |
1333 |
1 |
controller = await self.get_controller() |
1334 |
1 |
model = await self.get_model(controller, model_name) |
1335 |
1 |
try: |
1336 |
1 |
application = self._get_application(model, application_name) |
1337 |
1 |
if application is not None: |
1338 |
1 |
metrics = await application.get_metrics() |
1339 |
|
finally: |
1340 |
1 |
self.disconnect_model(model) |
1341 |
1 |
self.disconnect_controller(controller) |
1342 |
1 |
return metrics |
1343 |
|
|
1344 |
1 |
async def add_relation( |
1345 |
|
self, |
1346 |
|
model_name: str, |
1347 |
|
endpoint_1: str, |
1348 |
|
endpoint_2: str, |
1349 |
|
): |
1350 |
|
"""Add relation |
1351 |
|
|
1352 |
|
:param: model_name: Model name |
1353 |
|
:param: endpoint_1 First endpoint name |
1354 |
|
("app:endpoint" format or directly the saas name) |
1355 |
|
:param: endpoint_2: Second endpoint name (^ same format) |
1356 |
|
""" |
1357 |
|
|
1358 |
1 |
self.log.debug("Adding relation: {} -> {}".format(endpoint_1, endpoint_2)) |
1359 |
|
|
1360 |
|
# Get controller |
1361 |
1 |
controller = await self.get_controller() |
1362 |
|
|
1363 |
|
# Get model |
1364 |
1 |
model = await self.get_model(controller, model_name) |
1365 |
|
|
1366 |
|
# Add relation |
1367 |
1 |
try: |
1368 |
1 |
await model.add_relation(endpoint_1, endpoint_2) |
1369 |
1 |
except juju.errors.JujuAPIError as e: |
1370 |
1 |
if self._relation_is_not_found(e): |
1371 |
1 |
self.log.warning("Relation not found: {}".format(e.message)) |
1372 |
1 |
return |
1373 |
1 |
if self._relation_already_exist(e): |
1374 |
1 |
self.log.warning("Relation already exists: {}".format(e.message)) |
1375 |
1 |
return |
1376 |
|
# another exception, raise it |
1377 |
1 |
raise e |
1378 |
|
finally: |
1379 |
1 |
await self.disconnect_model(model) |
1380 |
1 |
await self.disconnect_controller(controller) |
1381 |
|
|
1382 |
1 |
def _relation_is_not_found(self, juju_error): |
1383 |
1 |
text = "not found" |
1384 |
1 |
return (text in juju_error.message) or ( |
1385 |
|
juju_error.error_code and text in juju_error.error_code |
1386 |
|
) |
1387 |
|
|
1388 |
1 |
def _relation_already_exist(self, juju_error): |
1389 |
1 |
text = "already exists" |
1390 |
1 |
return (text in juju_error.message) or ( |
1391 |
|
juju_error.error_code and text in juju_error.error_code |
1392 |
|
) |
1393 |
|
|
1394 |
1 |
async def offer(self, endpoint: RelationEndpoint) -> Offer: |
1395 |
|
""" |
1396 |
|
Create an offer from a RelationEndpoint |
1397 |
|
|
1398 |
|
:param: endpoint: Relation endpoint |
1399 |
|
|
1400 |
|
:return: Offer object |
1401 |
|
""" |
1402 |
1 |
model_name = endpoint.model_name |
1403 |
1 |
offer_name = f"{endpoint.application_name}-{endpoint.endpoint_name}" |
1404 |
1 |
controller = await self.get_controller() |
1405 |
1 |
model = None |
1406 |
1 |
try: |
1407 |
1 |
model = await self.get_model(controller, model_name) |
1408 |
1 |
await model.create_offer(endpoint.endpoint, offer_name=offer_name) |
1409 |
1 |
offer_list = await self._list_offers(model_name, offer_name=offer_name) |
1410 |
1 |
if offer_list: |
1411 |
1 |
return Offer(offer_list[0].offer_url) |
1412 |
|
else: |
1413 |
1 |
raise Exception("offer was not created") |
1414 |
1 |
except juju.errors.JujuError as e: |
1415 |
0 |
if "application offer already exists" not in e.message: |
1416 |
0 |
raise e |
1417 |
|
finally: |
1418 |
1 |
if model: |
1419 |
1 |
self.disconnect_model(model) |
1420 |
1 |
self.disconnect_controller(controller) |
1421 |
|
|
1422 |
1 |
async def consume( |
1423 |
|
self, |
1424 |
|
model_name: str, |
1425 |
|
offer: Offer, |
1426 |
|
provider_libjuju: "Libjuju", |
1427 |
|
) -> str: |
1428 |
|
""" |
1429 |
|
Consumes a remote offer in the model. Relations can be created later using "juju relate". |
1430 |
|
|
1431 |
|
:param: model_name: Model name |
1432 |
|
:param: offer: Offer object to consume |
1433 |
|
:param: provider_libjuju: Libjuju object of the provider endpoint |
1434 |
|
|
1435 |
|
:raises ParseError if there's a problem parsing the offer_url |
1436 |
|
:raises JujuError if remote offer includes and endpoint |
1437 |
|
:raises JujuAPIError if the operation is not successful |
1438 |
|
|
1439 |
|
:returns: Saas name. It is the application name in the model that reference the remote application. |
1440 |
|
""" |
1441 |
1 |
saas_name = f'{offer.name}-{offer.model_name.replace("-", "")}' |
1442 |
1 |
if offer.vca_id: |
1443 |
1 |
saas_name = f"{saas_name}-{offer.vca_id}" |
1444 |
1 |
controller = await self.get_controller() |
1445 |
1 |
model = None |
1446 |
1 |
provider_controller = None |
1447 |
1 |
try: |
1448 |
1 |
model = await controller.get_model(model_name) |
1449 |
1 |
provider_controller = await provider_libjuju.get_controller() |
1450 |
1 |
await model.consume( |
1451 |
|
offer.url, application_alias=saas_name, controller=provider_controller |
1452 |
|
) |
1453 |
1 |
return saas_name |
1454 |
|
finally: |
1455 |
1 |
if model: |
1456 |
1 |
await self.disconnect_model(model) |
1457 |
1 |
if provider_controller: |
1458 |
1 |
await provider_libjuju.disconnect_controller(provider_controller) |
1459 |
1 |
await self.disconnect_controller(controller) |
1460 |
|
|
1461 |
1 |
async def destroy_model(self, model_name: str, total_timeout: float = 1800): |
1462 |
|
""" |
1463 |
|
Destroy model |
1464 |
|
|
1465 |
|
:param: model_name: Model name |
1466 |
|
:param: total_timeout: Timeout |
1467 |
|
""" |
1468 |
|
|
1469 |
0 |
controller = await self.get_controller() |
1470 |
0 |
model = None |
1471 |
0 |
try: |
1472 |
0 |
if not await self.model_exists(model_name, controller=controller): |
1473 |
0 |
self.log.warn(f"Model {model_name} doesn't exist") |
1474 |
0 |
return |
1475 |
|
|
1476 |
0 |
self.log.debug(f"Getting model {model_name} to be destroyed") |
1477 |
0 |
model = await self.get_model(controller, model_name) |
1478 |
0 |
self.log.debug(f"Destroying manual machines in model {model_name}") |
1479 |
|
# Destroy machines that are manually provisioned |
1480 |
|
# and still are in pending state |
1481 |
0 |
await self._destroy_pending_machines(model, only_manual=True) |
1482 |
0 |
await self.disconnect_model(model) |
1483 |
|
|
1484 |
0 |
await asyncio.wait_for( |
1485 |
|
self._destroy_model(model_name, controller), |
1486 |
|
timeout=total_timeout, |
1487 |
|
) |
1488 |
0 |
except Exception as e: |
1489 |
0 |
if not await self.model_exists(model_name, controller=controller): |
1490 |
0 |
self.log.warn( |
1491 |
|
f"Failed deleting model {model_name}: model doesn't exist" |
1492 |
|
) |
1493 |
0 |
return |
1494 |
0 |
self.log.warn(f"Failed deleting model {model_name}: {e}") |
1495 |
0 |
raise e |
1496 |
|
finally: |
1497 |
0 |
if model: |
1498 |
0 |
await self.disconnect_model(model) |
1499 |
0 |
await self.disconnect_controller(controller) |
1500 |
|
|
1501 |
1 |
async def _destroy_model( |
1502 |
|
self, |
1503 |
|
model_name: str, |
1504 |
|
controller: Controller, |
1505 |
|
): |
1506 |
|
""" |
1507 |
|
Destroy model from controller |
1508 |
|
|
1509 |
|
:param: model: Model name to be removed |
1510 |
|
:param: controller: Controller object |
1511 |
|
:param: timeout: Timeout in seconds |
1512 |
|
""" |
1513 |
0 |
self.log.debug(f"Destroying model {model_name}") |
1514 |
|
|
1515 |
0 |
async def _destroy_model_gracefully(model_name: str, controller: Controller): |
1516 |
0 |
self.log.info(f"Gracefully deleting model {model_name}") |
1517 |
0 |
resolved = False |
1518 |
0 |
while model_name in await controller.list_models(): |
1519 |
0 |
if not resolved: |
1520 |
0 |
await self.resolve(model_name) |
1521 |
0 |
resolved = True |
1522 |
0 |
await controller.destroy_model(model_name, destroy_storage=True) |
1523 |
|
|
1524 |
0 |
await asyncio.sleep(5) |
1525 |
0 |
self.log.info(f"Model {model_name} deleted gracefully") |
1526 |
|
|
1527 |
0 |
async def _destroy_model_forcefully(model_name: str, controller: Controller): |
1528 |
0 |
self.log.info(f"Forcefully deleting model {model_name}") |
1529 |
0 |
while model_name in await controller.list_models(): |
1530 |
0 |
await controller.destroy_model( |
1531 |
|
model_name, destroy_storage=True, force=True, max_wait=60 |
1532 |
|
) |
1533 |
0 |
await asyncio.sleep(5) |
1534 |
0 |
self.log.info(f"Model {model_name} deleted forcefully") |
1535 |
|
|
1536 |
0 |
try: |
1537 |
0 |
try: |
1538 |
0 |
await asyncio.wait_for( |
1539 |
|
_destroy_model_gracefully(model_name, controller), timeout=120 |
1540 |
|
) |
1541 |
0 |
except asyncio.TimeoutError: |
1542 |
0 |
await _destroy_model_forcefully(model_name, controller) |
1543 |
0 |
except juju.errors.JujuError as e: |
1544 |
0 |
if any("has been removed" in error for error in e.errors): |
1545 |
0 |
return |
1546 |
0 |
if any("model not found" in error for error in e.errors): |
1547 |
0 |
return |
1548 |
0 |
raise e |
1549 |
|
|
1550 |
1 |
async def destroy_application( |
1551 |
|
self, model_name: str, application_name: str, total_timeout: float |
1552 |
|
): |
1553 |
|
""" |
1554 |
|
Destroy application |
1555 |
|
|
1556 |
|
:param: model_name: Model name |
1557 |
|
:param: application_name: Application name |
1558 |
|
:param: total_timeout: Timeout |
1559 |
|
""" |
1560 |
|
|
1561 |
1 |
controller = await self.get_controller() |
1562 |
1 |
model = None |
1563 |
|
|
1564 |
1 |
try: |
1565 |
1 |
model = await self.get_model(controller, model_name) |
1566 |
1 |
self.log.debug( |
1567 |
|
"Destroying application {} in model {}".format( |
1568 |
|
application_name, model_name |
1569 |
|
) |
1570 |
|
) |
1571 |
1 |
application = self._get_application(model, application_name) |
1572 |
1 |
if application: |
1573 |
0 |
await application.destroy() |
1574 |
|
else: |
1575 |
1 |
self.log.warning("Application not found: {}".format(application_name)) |
1576 |
|
|
1577 |
1 |
self.log.debug( |
1578 |
|
"Waiting for application {} to be destroyed in model {}...".format( |
1579 |
|
application_name, model_name |
1580 |
|
) |
1581 |
|
) |
1582 |
1 |
if total_timeout is None: |
1583 |
0 |
total_timeout = 3600 |
1584 |
1 |
end = time.time() + total_timeout |
1585 |
1 |
while time.time() < end: |
1586 |
1 |
if not self._get_application(model, application_name): |
1587 |
1 |
self.log.debug( |
1588 |
|
"The application {} was destroyed in model {} ".format( |
1589 |
|
application_name, model_name |
1590 |
|
) |
1591 |
|
) |
1592 |
1 |
return |
1593 |
0 |
await asyncio.sleep(5) |
1594 |
1 |
raise Exception( |
1595 |
|
"Timeout waiting for application {} to be destroyed in model {}".format( |
1596 |
|
application_name, model_name |
1597 |
|
) |
1598 |
|
) |
1599 |
|
finally: |
1600 |
1 |
if model is not None: |
1601 |
1 |
await self.disconnect_model(model) |
1602 |
1 |
await self.disconnect_controller(controller) |
1603 |
|
|
1604 |
1 |
async def _destroy_pending_machines(self, model: Model, only_manual: bool = False): |
1605 |
|
""" |
1606 |
|
Destroy pending machines in a given model |
1607 |
|
|
1608 |
|
:param: only_manual: Bool that indicates only manually provisioned |
1609 |
|
machines should be destroyed (if True), or that |
1610 |
|
all pending machines should be destroyed |
1611 |
|
""" |
1612 |
0 |
status = await model.get_status() |
1613 |
0 |
for machine_id in status.machines: |
1614 |
0 |
machine_status = status.machines[machine_id] |
1615 |
0 |
if machine_status.agent_status.status == "pending": |
1616 |
0 |
if only_manual and not machine_status.instance_id.startswith("manual:"): |
1617 |
0 |
break |
1618 |
0 |
machine = model.machines[machine_id] |
1619 |
0 |
await machine.destroy(force=True) |
1620 |
|
|
1621 |
1 |
async def configure_application( |
1622 |
|
self, model_name: str, application_name: str, config: dict = None |
1623 |
|
): |
1624 |
|
"""Configure application |
1625 |
|
|
1626 |
|
:param: model_name: Model name |
1627 |
|
:param: application_name: Application name |
1628 |
|
:param: config: Config to apply to the charm |
1629 |
|
""" |
1630 |
1 |
self.log.debug("Configuring application {}".format(application_name)) |
1631 |
|
|
1632 |
1 |
if config: |
1633 |
1 |
controller = await self.get_controller() |
1634 |
1 |
model = None |
1635 |
1 |
try: |
1636 |
1 |
model = await self.get_model(controller, model_name) |
1637 |
1 |
application = self._get_application( |
1638 |
|
model, |
1639 |
|
application_name=application_name, |
1640 |
|
) |
1641 |
1 |
await application.set_config(config) |
1642 |
|
finally: |
1643 |
1 |
if model: |
1644 |
1 |
await self.disconnect_model(model) |
1645 |
1 |
await self.disconnect_controller(controller) |
1646 |
|
|
1647 |
1 |
async def health_check(self, interval: float = 300.0): |
1648 |
|
""" |
1649 |
|
Health check to make sure controller and controller_model connections are OK |
1650 |
|
|
1651 |
|
:param: interval: Time in seconds between checks |
1652 |
|
""" |
1653 |
1 |
controller = None |
1654 |
1 |
while True: |
1655 |
1 |
try: |
1656 |
1 |
controller = await self.get_controller() |
1657 |
|
# self.log.debug("VCA is alive") |
1658 |
1 |
except Exception as e: |
1659 |
0 |
self.log.error("Health check to VCA failed: {}".format(e)) |
1660 |
|
finally: |
1661 |
1 |
await self.disconnect_controller(controller) |
1662 |
0 |
await asyncio.sleep(interval) |
1663 |
|
|
1664 |
1 |
async def list_models(self, contains: str = None) -> [str]: |
1665 |
|
"""List models with certain names |
1666 |
|
|
1667 |
|
:param: contains: String that is contained in model name |
1668 |
|
|
1669 |
|
:retur: [models] Returns list of model names |
1670 |
|
""" |
1671 |
|
|
1672 |
1 |
controller = await self.get_controller() |
1673 |
1 |
try: |
1674 |
1 |
models = await controller.list_models() |
1675 |
1 |
if contains: |
1676 |
1 |
models = [model for model in models if contains in model] |
1677 |
1 |
return models |
1678 |
|
finally: |
1679 |
1 |
await self.disconnect_controller(controller) |
1680 |
|
|
1681 |
1 |
async def _list_offers( |
1682 |
|
self, model_name: str, offer_name: str = None |
1683 |
|
) -> QueryApplicationOffersResults: |
1684 |
|
""" |
1685 |
|
List offers within a model |
1686 |
|
|
1687 |
|
:param: model_name: Model name |
1688 |
|
:param: offer_name: Offer name to filter. |
1689 |
|
|
1690 |
|
:return: Returns application offers results in the model |
1691 |
|
""" |
1692 |
|
|
1693 |
1 |
controller = await self.get_controller() |
1694 |
1 |
try: |
1695 |
1 |
offers = (await controller.list_offers(model_name)).results |
1696 |
1 |
if offer_name: |
1697 |
1 |
matching_offer = [] |
1698 |
1 |
for offer in offers: |
1699 |
1 |
if offer.offer_name == offer_name: |
1700 |
1 |
matching_offer.append(offer) |
1701 |
1 |
break |
1702 |
1 |
offers = matching_offer |
1703 |
1 |
return offers |
1704 |
|
finally: |
1705 |
1 |
await self.disconnect_controller(controller) |
1706 |
|
|
1707 |
1 |
async def add_k8s( |
1708 |
|
self, |
1709 |
|
name: str, |
1710 |
|
rbac_id: str, |
1711 |
|
token: str, |
1712 |
|
client_cert_data: str, |
1713 |
|
configuration: Configuration, |
1714 |
|
storage_class: str, |
1715 |
|
credential_name: str = None, |
1716 |
|
): |
1717 |
|
""" |
1718 |
|
Add a Kubernetes cloud to the controller |
1719 |
|
|
1720 |
|
Similar to the `juju add-k8s` command in the CLI |
1721 |
|
|
1722 |
|
:param: name: Name for the K8s cloud |
1723 |
|
:param: configuration: Kubernetes configuration object |
1724 |
|
:param: storage_class: Storage Class to use in the cloud |
1725 |
|
:param: credential_name: Storage Class to use in the cloud |
1726 |
|
""" |
1727 |
|
|
1728 |
1 |
if not storage_class: |
1729 |
1 |
raise Exception("storage_class must be a non-empty string") |
1730 |
1 |
if not name: |
1731 |
1 |
raise Exception("name must be a non-empty string") |
1732 |
1 |
if not configuration: |
1733 |
1 |
raise Exception("configuration must be provided") |
1734 |
|
|
1735 |
1 |
endpoint = configuration.host |
1736 |
1 |
credential = self.get_k8s_cloud_credential( |
1737 |
|
configuration, |
1738 |
|
client_cert_data, |
1739 |
|
token, |
1740 |
|
) |
1741 |
1 |
credential.attrs[RBAC_LABEL_KEY_NAME] = rbac_id |
1742 |
1 |
cloud = client.Cloud( |
1743 |
|
type_="kubernetes", |
1744 |
|
auth_types=[credential.auth_type], |
1745 |
|
endpoint=endpoint, |
1746 |
|
ca_certificates=[client_cert_data], |
1747 |
|
config={ |
1748 |
|
"operator-storage": storage_class, |
1749 |
|
"workload-storage": storage_class, |
1750 |
|
}, |
1751 |
|
) |
1752 |
|
|
1753 |
1 |
return await self.add_cloud( |
1754 |
|
name, cloud, credential, credential_name=credential_name |
1755 |
|
) |
1756 |
|
|
1757 |
1 |
def get_k8s_cloud_credential( |
1758 |
|
self, |
1759 |
|
configuration: Configuration, |
1760 |
|
client_cert_data: str, |
1761 |
|
token: str = None, |
1762 |
|
) -> client.CloudCredential: |
1763 |
1 |
attrs = {} |
1764 |
|
# TODO: Test with AKS |
1765 |
1 |
key = None # open(configuration.key_file, "r").read() |
1766 |
1 |
username = configuration.username |
1767 |
1 |
password = configuration.password |
1768 |
|
|
1769 |
1 |
if client_cert_data: |
1770 |
1 |
attrs["ClientCertificateData"] = client_cert_data |
1771 |
1 |
if key: |
1772 |
0 |
attrs["ClientKeyData"] = key |
1773 |
1 |
if token: |
1774 |
1 |
if username or password: |
1775 |
1 |
raise JujuInvalidK8sConfiguration("Cannot set both token and user/pass") |
1776 |
1 |
attrs["Token"] = token |
1777 |
|
|
1778 |
1 |
auth_type = None |
1779 |
1 |
if key: |
1780 |
0 |
auth_type = "oauth2" |
1781 |
0 |
if client_cert_data: |
1782 |
0 |
auth_type = "oauth2withcert" |
1783 |
0 |
if not token: |
1784 |
0 |
raise JujuInvalidK8sConfiguration( |
1785 |
|
"missing token for auth type {}".format(auth_type) |
1786 |
|
) |
1787 |
1 |
elif username: |
1788 |
1 |
if not password: |
1789 |
1 |
self.log.debug( |
1790 |
|
"credential for user {} has empty password".format(username) |
1791 |
|
) |
1792 |
1 |
attrs["username"] = username |
1793 |
1 |
attrs["password"] = password |
1794 |
1 |
if client_cert_data: |
1795 |
1 |
auth_type = "userpasswithcert" |
1796 |
|
else: |
1797 |
1 |
auth_type = "userpass" |
1798 |
1 |
elif client_cert_data and token: |
1799 |
1 |
auth_type = "certificate" |
1800 |
|
else: |
1801 |
1 |
raise JujuInvalidK8sConfiguration("authentication method not supported") |
1802 |
1 |
return client.CloudCredential(auth_type=auth_type, attrs=attrs) |
1803 |
|
|
1804 |
1 |
async def add_cloud( |
1805 |
|
self, |
1806 |
|
name: str, |
1807 |
|
cloud: Cloud, |
1808 |
|
credential: CloudCredential = None, |
1809 |
|
credential_name: str = None, |
1810 |
|
) -> Cloud: |
1811 |
|
""" |
1812 |
|
Add cloud to the controller |
1813 |
|
|
1814 |
|
:param: name: Name of the cloud to be added |
1815 |
|
:param: cloud: Cloud object |
1816 |
|
:param: credential: CloudCredentials object for the cloud |
1817 |
|
:param: credential_name: Credential name. |
1818 |
|
If not defined, cloud of the name will be used. |
1819 |
|
""" |
1820 |
1 |
controller = await self.get_controller() |
1821 |
1 |
try: |
1822 |
1 |
_ = await controller.add_cloud(name, cloud) |
1823 |
1 |
if credential: |
1824 |
1 |
await controller.add_credential( |
1825 |
|
credential_name or name, credential=credential, cloud=name |
1826 |
|
) |
1827 |
|
# Need to return the object returned by the controller.add_cloud() function |
1828 |
|
# I'm returning the original value now until this bug is fixed: |
1829 |
|
# https://github.com/juju/python-libjuju/issues/443 |
1830 |
1 |
return cloud |
1831 |
|
finally: |
1832 |
1 |
await self.disconnect_controller(controller) |
1833 |
|
|
1834 |
1 |
async def remove_cloud(self, name: str): |
1835 |
|
""" |
1836 |
|
Remove cloud |
1837 |
|
|
1838 |
|
:param: name: Name of the cloud to be removed |
1839 |
|
""" |
1840 |
1 |
controller = await self.get_controller() |
1841 |
1 |
try: |
1842 |
1 |
await controller.remove_cloud(name) |
1843 |
1 |
except juju.errors.JujuError as e: |
1844 |
0 |
if len(e.errors) == 1 and f'cloud "{name}" not found' == e.errors[0]: |
1845 |
0 |
self.log.warning(f"Cloud {name} not found, so it could not be deleted.") |
1846 |
|
else: |
1847 |
0 |
raise e |
1848 |
|
finally: |
1849 |
1 |
await self.disconnect_controller(controller) |
1850 |
|
|
1851 |
1 |
@retry( |
1852 |
|
attempts=20, delay=5, fallback=JujuLeaderUnitNotFound(), callback=retry_callback |
1853 |
|
) |
1854 |
1 |
async def _get_leader_unit(self, application: Application) -> Unit: |
1855 |
1 |
unit = None |
1856 |
1 |
for u in application.units: |
1857 |
1 |
if await u.is_leader_from_status(): |
1858 |
1 |
unit = u |
1859 |
1 |
break |
1860 |
1 |
if not unit: |
1861 |
1 |
raise Exception() |
1862 |
1 |
return unit |
1863 |
|
|
1864 |
1 |
async def get_cloud_credentials(self, cloud: Cloud) -> typing.List: |
1865 |
|
""" |
1866 |
|
Get cloud credentials |
1867 |
|
|
1868 |
|
:param: cloud: Cloud object. The returned credentials will be from this cloud. |
1869 |
|
|
1870 |
|
:return: List of credentials object associated to the specified cloud |
1871 |
|
|
1872 |
|
""" |
1873 |
0 |
controller = await self.get_controller() |
1874 |
0 |
try: |
1875 |
0 |
facade = client.CloudFacade.from_connection(controller.connection()) |
1876 |
0 |
cloud_cred_tag = tag.credential( |
1877 |
|
cloud.name, self.vca_connection.data.user, cloud.credential_name |
1878 |
|
) |
1879 |
0 |
params = [client.Entity(cloud_cred_tag)] |
1880 |
0 |
return (await facade.Credential(params)).results |
1881 |
|
finally: |
1882 |
0 |
await self.disconnect_controller(controller) |
1883 |
|
|
1884 |
1 |
async def check_application_exists(self, model_name, application_name) -> bool: |
1885 |
|
"""Check application exists |
1886 |
|
|
1887 |
|
:param: model_name: Model Name |
1888 |
|
:param: application_name: Application Name |
1889 |
|
|
1890 |
|
:return: Boolean |
1891 |
|
""" |
1892 |
|
|
1893 |
1 |
model = None |
1894 |
1 |
controller = await self.get_controller() |
1895 |
1 |
try: |
1896 |
1 |
model = await self.get_model(controller, model_name) |
1897 |
1 |
self.log.debug( |
1898 |
|
"Checking if application {} exists in model {}".format( |
1899 |
|
application_name, model_name |
1900 |
|
) |
1901 |
|
) |
1902 |
1 |
return self._get_application(model, application_name) is not None |
1903 |
|
finally: |
1904 |
1 |
if model: |
1905 |
1 |
await self.disconnect_model(model) |
1906 |
1 |
await self.disconnect_controller(controller) |