list-module-components.py

#!/usr/bin/python3
#
# Copyright (c) 2019 Red Hat, Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Author: Mikolaj Izdebski <mizdebsk@redhat.com>

import os
import yaml


def main():
    fn = '{}.yaml'.format(os.path.basename(os.getcwd()))
    with open(fn) as f:
        mmd = yaml.load(f, Loader=yaml.SafeLoader)
    if mmd['document'] != 'modulemd' or mmd['version'] != 2:
        raise Exception(f"{fn}: Not a modulemd v2 document")
    print("\n".join(sorted(mmd['data']['components']['rpms'].keys())))


if __name__ == '__main__':
    main()