requirements/openstack_requirements/cmds/edit_constraint.py
Costin Galan 7bca319451 Add Windows as supported operating system
This change is necessary in order to use the project's
update-requirements.py script when preparing the environment on the
Hyper-V compute nodes used in the Hyper-V CI. Using the mentioned script
will set the latest requirements in nova, neutron, manila, etc.,
reducing the CI's amount of failures caused by outdated requirements.

Including Microsoft Windows as a supported operating system on this
project. Also, we update the edit-constraints.py and project.py
files to support os.rename() of Windows.

On Windows, os.rename() will create a file with the source
name, without deleting the initial file first.

Example of a traceback:

 Traceback (most recent call last):
   File "C:\Python27\Scripts\edit-constraints-script.py", line 9, in
 <module>
     load_entry_point('openstack.requirements==0.0.1.dev2497',
 'console_scripts', 'edit-constraints')()
   File
 "C:\Python27\lib\site-packages\openstack_requirements\cmds\edit_constraint.py",
 line 74, in main
     os.rename(args[0] + '.tmp', args[0])
 WindowsError: [Error 183] Cannot create a file when that file already exists

This could be easily solved by removing the file before the rename.

Proposed fix:
Add before "os.rename(args[0] + '.tmp', args[0])" the line "os.remove(args[0])"
in edit_constraint.py
Add before "os.rename(tmpname, fullname)" the line "os.remove(fullname)"
in project.py
Add "Operating System :: Microsoft :: Windows" in setup.cfg

DocImpact: Added Windows as a supported OS in setup.cfg
Change-Id: If123a65fd8d49d5c67a1db16827a9617ce520dba
Signed-off-by: Costin Galan <cgalan@cloudbasesolutions.com>
2016-02-26 14:25:50 +02:00

78 lines
2.4 KiB
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.
import optparse
import os.path
import sys
import textwrap
from openstack_requirements import requirement
def edit(reqs, name, replacement):
key = requirement.canonical_name(name)
if not replacement:
reqs.pop(key, None)
else:
reqs[key] = [
(requirement.Requirement('', '', '', '', replacement), '')]
result = []
for entries in reqs.values():
for entry, _ in entries:
result.append(entry)
return requirement.Requirements(sorted(result))
# -- untested UI glue from here down.
def _validate_options(options, args):
"""Check that options and arguments are valid.
:param options: The optparse options for this program.
:param args: The args for this program.
"""
if len(args) < 2:
raise Exception("No enough arguments given")
if not os.path.exists(args[0]):
raise Exception(
"Constraints file %(con)s not found."
% dict(con=args[0]))
def main(argv=None, stdout=None):
parser = optparse.OptionParser(
usage="%prog [options] constraintpath name replacement",
epilog=textwrap.dedent("""\
Replaces any entries of "name" in the constraints file with
"replacement". If "name" is not present, it is added to the end of
the file. If "replacement" is missing or empty, remove "name" from
the file.
"""))
options, args = parser.parse_args(argv)
if stdout is None:
stdout = sys.stdout
_validate_options(options, args)
args = args + [""]
content = open(args[0], 'rt').read()
reqs = requirement.parse(content, permit_urls=True)
out_reqs = edit(reqs, args[1], args[2])
out = requirement.to_content(out_reqs, prefix=False)
with open(args[0] + '.tmp', 'wt') as f:
f.write(out)
if os.path.exists(args[0]):
os.remove(args[0])
os.rename(args[0] + '.tmp', args[0])
return 0