get_common_image_version.py revision 88272d479f2761cc1906fea564c73033f77a6270 
1#!/usr/bin/python2
2#
3# Copyright 2013 Google Inc. All Rights Reserved.
4"""Script to find list of common images (first beta releases) in Chromeos.
5
6Display information about stable ChromeOS/Chrome versions to be used
7by the team developers. The purpose is to increase team productivity
8by using stable (known and tested) ChromeOS/Chrome versions instead of
9using randomly selected versions. Currently we define as a "stable"
10version the first Beta release in a particular release cycle.
11"""
12
13from __future__ import print_function
14
15__author__ = 'llozano@google.com (Luis Lozano)'
16
17import argparse
18import pickle
19import re
20import sys
21import urllib
22
23VERSIONS_HISTORY_URL = 'http://cros-omahaproxy.appspot.com/history'
24
25
26def DisplayBetas(betas):
27  print('List of betas from %s' % VERSIONS_HISTORY_URL)
28  for beta in betas:
29    print('  Release', beta['chrome_major_version'], beta)
30  return
31
32
33def FindAllBetas(all_versions):
34  """Get ChromeOS first betas from History URL."""
35
36  all_betas = []
37  prev_beta = {}
38  for line in all_versions:
39    match_obj = re.match(
40        r'(?P<date>.*),(?P<chromeos_version>.*),'
41        r'(?P<chrome_major_version>\d*).(?P<chrome_minor_version>.*),'
42        r'(?P<chrome_appid>.*),beta-channel,,Samsung Chromebook Series 5 550',
43        line)
44    if match_obj:
45      if prev_beta:
46        if (prev_beta['chrome_major_version'] !=
47            match_obj.group('chrome_major_version')):
48          all_betas.append(prev_beta)
49      prev_beta = match_obj.groupdict()
50  if prev_beta:
51    all_betas.append(prev_beta)
52  return all_betas
53
54
55def SerializeBetas(all_betas, serialize_file):
56  with open(serialize_file, 'wb') as f:
57    pickle.dump(all_betas, f)
58    print('Serialized list of betas into', serialize_file)
59  return
60
61
62def Main(argv):
63  """Get ChromeOS first betas list from history URL."""
64
65  parser = argparse.ArgumentParser()
66  parser.add_argument('--serialize',
67                      dest='serialize',
68                      default=None,
69                      help='Save list of common images into the specified '
70                      'file.')
71  options = parser.parse_args(argv)
72
73  try:
74    opener = urllib.URLopener()
75    all_versions = opener.open(VERSIONS_HISTORY_URL)
76  except IOError as ioe:
77    print('Cannot open', VERSIONS_HISTORY_URL)
78    print(ioe)
79    return 1
80
81  all_betas = FindAllBetas(all_versions)
82  DisplayBetas(all_betas)
83  if options.serialize:
84    SerializeBetas(all_betas, options.serialize)
85  all_versions.close()
86
87  return 0
88
89
90if __name__ == '__main__':
91  retval = Main(sys.argv[1:])
92  sys.exit(retval)
93