openstack-ansible-ops/leap-upgrades/upgrade-utilities-newton/scripts/migrate_openstack_vars.py
Kevin Carter 2438ad03ab Added leap upgrade tooling
This change adds upgrade tooling that will take a Juno based
OpenStack-Ansible cloud and upgrade it to Newton. The tooling
will run a deployment through all of the needed steps upgrading
the environment and skipping all of the OpenStack releases in
between.

**This tooling should be considered experimental at this time**

Change-Id: I1880794717b9e47786ae255ea1afa57d805cde8e
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
2017-02-01 14:27:07 +00:00

71 lines
2.0 KiB
Python
Executable File

#!/usr/bin/env python
# Copyright 2016, Rackspace US, Inc.
#
# 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.
# This could probably be made more generic, since the biggest change per
# service is the variable mappings
import sys
VAR_MAPPINGS = {
# Add mapped items here
'test-old': 'test-new'
}
def update_variables(old_contents):
"""Replace all references to old variables.
This includes comments and references within values for other variables.
"""
new_contents = []
for line in old_contents:
words = line.split()
for word in words:
# Using the whitespace split above, the keys in the yaml file will
# have a : at the end, so we need to strip that off before
# replacing
if word.endswith(':'):
word = word[:-1]
if word in VAR_MAPPINGS.keys():
line = line.replace(word, VAR_MAPPINGS[word])
new_contents.append(line)
return new_contents
def main(filename):
with open(filename, 'r') as f:
contents = f.readlines()
new_contents = update_variables(contents)
with open(filename, 'w') as f:
f.write(''.join(new_contents))
if __name__ == '__main__':
if len(sys.argv) < 3:
sys.exit("Filename and flag file reference required.")
filename = sys.argv[1]
flag_ref = sys.argv[2]
main(filename)
flag_file = '/etc/openstack_deploy.NEWTON/VARS_MIGRATED_%s' % flag_ref
with open(flag_file, 'w') as f:
f.write('OpenStack Newton variables migrated.')