b10cfa841a
An app using pkg-map (like package-installs) might want to distinguish between a hard error (invalid pkg-map file) and a soft error (no mapping found). Currently this is not possible because we only return with error values of 1. Also printing error messages to stderror so we can still make use of stdout data during a soft error. Change-Id: I8bef56d3a74e8530afb8c58ac50ca3e9f7700639
126 lines
3.9 KiB
Python
Executable File
126 lines
3.9 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2014 Red Hat Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import argparse
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import json
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import os
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import sys
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def eprint(msg):
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sys.stderr.write(msg)
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sys.stderr.write("\n")
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def os_family(distro):
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family = None
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if distro in ['fedora', 'rhel', 'rhel7', 'centos7']:
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family = 'redhat'
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elif distro in ['debian', 'ubuntu']:
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family = 'debian'
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elif distro == 'opensuse':
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family = 'suse'
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return family
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def main():
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parser = argparse.ArgumentParser(
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description="Translate package name to distro specific name."
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" Exits with 1 if error is encountered, 2 if no pkg-map"
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" file is found. Otherwise exits with 0.")
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parser.add_argument('--element', default='',
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help='The element (namespace) to use for translation.')
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parser.add_argument('--distro', default=os.environ.get('DISTRO_NAME'),
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help='The distro name to use for translation.'
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' Defaults to DISTRO_NAME')
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parser.add_argument('--missing-ok', action="store_true",
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help='Do not consider missing mappings an error.'
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' Causes packages where no mapping is set to be'
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' printed.')
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args, extra = parser.parse_known_args()
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if not args.element:
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eprint('Please specify an --element argument.')
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sys.exit(1)
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if not args.distro:
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eprint('Please specify a --distro argument or set DISTRO_NAME.')
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sys.exit(1)
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map_file = '/usr/share/pkg-map/%s' % args.element
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if not os.path.exists(map_file):
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eprint('Map file for %s element does not exist.' % args.element)
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sys.exit(2)
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with open(map_file) as fd:
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package_names = json.loads(fd.read())
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# Parse mapping data in this form using distro/family/default
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# Most specific takes priority (distro is most specific).
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# An empty package list can be provided.
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# Example for Nova and Glance (using fictitious name for Fedora and SUSE
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# and package mapping for SUSE family)
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# {
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# "distro": {
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# "fedora": {
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# "nova_package": "openstack-compute",
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# "glance_package": "openstack-image"
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# }
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# },
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# "family": {
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# "redhat": {
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# "nova_package": "openstack-nova",
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# "glance_package": "openstack-glance"
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# },
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# "suse": {
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# "nova_package": ""
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# }
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# },
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# "default": {
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# "nova_package": "nova",
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# "glance_package": "glance"
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# }
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# }
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name_map = package_names.get('default', {})
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if 'family' in package_names:
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family_map = package_names['family'].get(os_family(args.distro))
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if family_map:
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name_map.update(family_map)
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if 'distro' in package_names:
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distro_map = package_names['distro'].get(args.distro)
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if distro_map:
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name_map.update(distro_map)
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for name in extra:
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pkg_name = name_map.get(name)
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if pkg_name:
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print(pkg_name)
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elif name in name_map:
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continue
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else:
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err_msg = 'Missing package name for distro/element: %s/%s'
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eprint(err_msg % (args.distro, args.element))
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if args.missing_ok:
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print(name)
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else:
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sys.exit(1)
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sys.exit(0)
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if __name__ == '__main__':
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main()
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