neutron/tools/download_gerrit_change.py
Flavio Fernandes 303937f3ae [OVN] scripts for networking-ovn code migration
In an effort to help on migrating changes from neutron to networking-ovn,
these 3 scripts are being introduced under tools.

Also adding documentation about these under OVN folder.

1) files_in_patch.py
Use this to show files that are changed in a patch file.

   $ # Make a patch to use as example
   $ git show > /tmp/commit.patch

   $ ./tools/files_in_patch.py /tmp/commit.patch | grep .py
   tools/download_gerrit_change.py
   tools/files_in_patch.py
   tools/migrate_names.py

2) download_gerrit_change.py
Given a gerrit change id, it will fetch the latest patchset of the change
from review.opendev.org as a patch file.

   $ ./tools/download_gerrit_change.py --help
   Usage: download_gerrit_change.py [OPTIONS] GERRIT_CHANGE

   Options:
     -o, --output_patch TEXT  Output patch file  [default: stdout]
     -g, --gerrit_url TEXT    The url to Gerrit server  [default:
                              https://review.opendev.org/]
     -t, --timeout INTEGER    Timeout, in seconds  [default: 10]
     --help                   Show this message and exit.

   $ ./tools/download_gerrit_change.py 698863 -o /tmp/change.patch
   $ ./tools/files_in_patch.py /tmp/change.patch
   networking_ovn/ml2/mech_driver.py
   networking_ovn/ml2/trunk_driver.py
   networking_ovn/tests/unit/ml2/test_mech_driver.py
   networking_ovn/tests/unit/ml2/test_trunk_driver.py

3) migrate_names.py
Use this tool to modify the name of the files in a patchfile so it can
be converted to/from the legacy networking-ovn and neutron repositories.

   $ ./tools/migrate_names.py --help
   Usage: migrate_names.py [OPTIONS]

   Options:
     -i, --input_patch TEXT    input_patch patch file or gerrit change
     -o, --output_patch TEXT   Output patch file. Default: stdout
     -m, --mapfile PATH        Data file that specifies mapping to be applied to
                               input  [default: /home/user/openstack/neutron.git
                               /tools/migrate_names.txt]
     --reverse / --no-reverse  Map filenames from networking-ovn to Neutron repo
     --help                    Show this message and exit.
   $ ./tools/migrate_names.py -i 701646 > /tmp/ovn_change.patch
   $ ./tools/migrate_names.py -o /tmp/reverse.patch -i /tmp/ovn_change.patch --reverse
   $ diff /tmp/reverse.patch /tmp/ovn_change.patch | grep .py
   < --- a/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py
   < +++ b/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py
   > --- a/networking_ovn/ml2/mech_driver.py
   > +++ b/networking_ovn/ml2/mech_driver.py
   <... snip ...>

   $ ./tools/files_in_patch.py /tmp/ovn_change.patch
   networking_ovn/ml2/mech_driver.py
   networking_ovn/ml2/trunk_driver.py
   networking_ovn/tests/unit/ml2/test_mech_driver.py
   networking_ovn/tests/unit/ml2/test_trunk_driver.py

Change-Id: I17904c996e1357f7292d25aab4d448edb052f44c
Related-Blueprint: neutron-ovn-merge
2020-01-26 20:19:43 +00:00

62 lines
1.9 KiB
Python
Executable File

#!/usr/bin/env python3
# Copyright 2020 Red Hat, Inc.
# All Rights Reserved.
#
# 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 base64
import click
import requests
GERRIT_URL = 'https://review.opendev.org/'
TIMEOUT = 10
def fetch(change, output_patch=None, url=GERRIT_URL, timeout=TIMEOUT):
params = {'download': None}
r = requests.get(
url='{}/changes/{}/revisions/current/patch'.format(url, change),
params=params,
timeout=timeout)
r.raise_for_status()
message_bytes = base64.b64decode(r.text)
if output_patch and output_patch != '-':
with open(output_patch, 'wb') as output_fd:
output_fd.write(message_bytes)
return str(message_bytes, 'utf-8')
@click.command()
@click.argument('gerrit_change', nargs=1, type=click.INT)
@click.option('-o', '--output_patch',
help='Output patch file [default: stdout]')
@click.option('-g', '--gerrit_url',
default=GERRIT_URL,
show_default=True,
help='The url to Gerrit server')
@click.option('-t', '--timeout',
default=TIMEOUT,
show_default=True,
type=click.INT,
help='Timeout, in seconds')
def cli(gerrit_change, output_patch, gerrit_url, timeout):
message = fetch(gerrit_change, output_patch, gerrit_url, timeout)
if not output_patch or output_patch == '-':
print(message)
if __name__ == '__main__':
cli()