requirements/tools/fix-lower-constraints.py
Doug Hellmann 8d4eb15136 script to fix lower constraints entries that do not match local requirements
We have a few projects that have lower constraints lists that do not
match their own local requirements settings. This script tries to fix
that by changing the constraints to match.

Change-Id: I5f9bfc30e5dab855c9cef77cd9c4063658aab4c1
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
2018-04-07 21:27:40 -04:00

72 lines
2.1 KiB
Python
Executable File

#!/usr/bin/env python
#
# 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.
"""
Instructions:
1. virtualenv venv
2. source virtualenv/bin/activate
3. pip install /path/to/local/copy/of/requirements/repository
4. cd /path/to/project/to/fix
5. .../requirements/tools/fix-lower-constraints.py > new-lc.txt
6. mv new-lc.txt lower-constraints.txt
7. Update the patch and resubmit it to gerrit.
"""
import io
from openstack_requirements import requirement
def read_file(name):
with io.open(name, 'r', encoding='utf-8') as f:
return requirement.parse(f.read())
requirements = read_file('requirements.txt')
requirements.update(read_file('test-requirements.txt'))
constraints = read_file('lower-constraints.txt')
output = []
for const in constraints.values():
const = const[0][0]
actual = const.specifiers.lstrip('=')
name = const.package.lower()
if name not in requirements:
# Ignore secondary dependencies
output.append(const.to_line())
continue
for req, _ in requirements[name]:
min = [
s
for s in req.specifiers.split(',')
if '>' in s
]
if not min:
# If there is no lower bound, assume the constraint is
# right.
output.append(const.to_line())
continue
required = min[0].lstrip('>=')
if required != actual:
output.append('{}=={}\n'.format(
const.package, required))
else:
output.append(const.to_line())
for line in sorted(output, key=lambda x: x.lower()):
if not line.strip():
continue
print(line.rstrip())