1# Copyright 2015 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5"""This tool can be used to set up a base container for test. For example,
6  python lxc.py -s -p /tmp/container
7This command will download and setup base container in directory /tmp/container.
8After that command finishes, you can run lxc command to work with the base
9container, e.g.,
10  lxc-start -P /tmp/container -n base -d
11  lxc-attach -P /tmp/container -n base
12"""
13
14import argparse
15import logging
16
17import common
18from autotest_lib.client.bin import utils
19from autotest_lib.site_utils import lxc
20
21
22def parse_options():
23    """Parse command line inputs.
24
25    @raise argparse.ArgumentError: If command line arguments are invalid.
26    """
27    parser = argparse.ArgumentParser()
28    parser.add_argument('-s', '--setup', action='store_true',
29                        default=False,
30                        help='Set up base container.')
31    parser.add_argument('-p', '--path', type=str,
32                        help='Directory to store the container.',
33                        default=lxc.DEFAULT_CONTAINER_PATH)
34    parser.add_argument('-f', '--force_delete', action='store_true',
35                        default=False,
36                        help=('Force to delete existing containers and rebuild '
37                              'base containers.'))
38    parser.add_argument('-n', '--name', type=str,
39                        help='Name of the base container.',
40                        default=lxc.BASE)
41    options = parser.parse_args()
42    if not options.setup and not options.force_delete:
43        raise argparse.ArgumentError(
44                'Use --setup to setup a base container, or --force_delete to '
45                'delete all containers in given path.')
46    return options
47
48
49def main():
50    """main script."""
51    # Force to run the setup as superuser.
52    # TODO(dshi): crbug.com/459344 Set remove this enforcement when test
53    # container can be unprivileged container.
54    if utils.sudo_require_password():
55        logging.warn('SSP requires root privilege to run commands, please '
56                     'grant root access to this process.')
57        utils.run('sudo true')
58
59    options = parse_options()
60    image = lxc.BaseImage(container_path=options.path)
61    if options.setup:
62        image.setup(name=options.name, force_delete=options.force_delete)
63    elif options.force_delete:
64        image.cleanup()
65
66
67if __name__ == '__main__':
68    main()
69