charm-nova-cloud-controller/actions/openstack_upgrade.py
Alex Kavanagh 9c12812735 Switch the charm to support py3
Some major changes:
* the charm has been rebased (from a Python perspective) to be rooted in
  the charm directory.  This is a single root.
* Imports have been changed so that the don't add lots of imports to the
  namespace of the module doing the import.
* The code that used to run at module import time has been made lazy
  such that it only has to run if the relevant functions are called.
  This includes restart_on_change parameters, the harden function and
  the parameters to the guard_map.  Appropriate changes will be
  submitted to charm-helpers.
* Several tests had to be re-written as (incorrect) mocking meant that
  text fixtures didn't actually match what the code was doing.  Thus,
  the tests were meaningless.
* This has had a net positive impact on the unit tests wrt to importing
  modules and mocking.

Change-Id: Id07d9d1caaa9b29453a63c2e49ba831071e9457f
2018-10-18 15:43:03 +01:00

58 lines
1.9 KiB
Python
Executable File

#!/usr/bin/env python3
#
# Copyright 2016 Canonical Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
_path = os.path.dirname(os.path.realpath(__file__))
_root = os.path.abspath(os.path.join(_path, '..'))
def _add_path(path):
if path not in sys.path:
sys.path.insert(1, path)
_add_path(_root)
import charmhelpers.contrib.openstack.utils as ch_utils
import charmhelpers.core.hookenv as hookenv
import hooks.nova_cc_utils as utils
import hooks.nova_cc_hooks as hooks
def openstack_upgrade():
"""Upgrade packages to config-set Openstack version.
If the charm was installed from source we cannot upgrade it.
For backwards compatibility a config flag must be set for this
code to run, otherwise a full service level upgrade will fire
on config-changed."""
if (ch_utils.do_action_openstack_upgrade('nova-common',
utils.do_openstack_upgrade,
hooks.CONFIGS)):
for rid in hookenv.relation_ids('neutron-api'):
hooks.neutron_api_relation_joined(rid=rid, remote_restart=True)
# NOTE(thedac): Force re-fire of shared-db joined hook
# to ensure that nova_api database is setup if required.
for r_id in hookenv.relation_ids('shared-db'):
hooks.db_joined(relation_id=r_id)
hooks.config_changed()
if __name__ == '__main__':
hooks.resolve_CONFIGS()
openstack_upgrade()