The Tor Browser / file comparison
comparison: build/compare-mozconfig/compare-mozconfigs.py
build/compare-mozconfig/compare-mozconfigs.py
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:f80488477fcd |
|---|---|
| 1 #!/usr/bin/python | |
| 2 # This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 # License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 # file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 5 | |
| 6 # originally from http://hg.mozilla.org/build/tools/file/4ab9c1a4e05b/scripts/release/compare-mozconfigs.py | |
| 7 | |
| 8 from __future__ import unicode_literals | |
| 9 | |
| 10 import logging | |
| 11 import os | |
| 12 import site | |
| 13 import sys | |
| 14 import urllib2 | |
| 15 import difflib | |
| 16 | |
| 17 FAILURE_CODE = 1 | |
| 18 SUCCESS_CODE = 0 | |
| 19 | |
| 20 log = logging.getLogger(__name__) | |
| 21 | |
| 22 class ConfigError(Exception): | |
| 23 pass | |
| 24 | |
| 25 def make_hg_url(hgHost, repoPath, protocol='https', revision=None, | |
| 26 filename=None): | |
| 27 """construct a valid hg url from a base hg url (hg.mozilla.org), | |
| 28 repoPath, revision and possible filename""" | |
| 29 base = '%s://%s' % (protocol, hgHost) | |
| 30 repo = '/'.join(p.strip('/') for p in [base, repoPath]) | |
| 31 if not filename: | |
| 32 if not revision: | |
| 33 return repo | |
| 34 else: | |
| 35 return '/'.join([p.strip('/') for p in [repo, 'rev', revision]]) | |
| 36 else: | |
| 37 assert revision | |
| 38 return '/'.join([p.strip('/') for p in [repo, 'raw-file', revision, | |
| 39 filename]]) | |
| 40 | |
| 41 def readConfig(configfile, keys=[], required=[]): | |
| 42 c = {} | |
| 43 execfile(configfile, c) | |
| 44 for k in keys: | |
| 45 c = c[k] | |
| 46 items = c.keys() | |
| 47 err = False | |
| 48 for key in required: | |
| 49 if key not in items: | |
| 50 err = True | |
| 51 log.error("Required item `%s' missing from %s" % (key, c)) | |
| 52 if err: | |
| 53 raise ConfigError("Missing at least one item in config, see above") | |
| 54 return c | |
| 55 | |
| 56 def verify_mozconfigs(mozconfig_pair, nightly_mozconfig_pair, platform, | |
| 57 mozconfigWhitelist={}): | |
| 58 """Compares mozconfig to nightly_mozconfig and compare to an optional | |
| 59 whitelist of known differences. mozconfig_pair and nightly_mozconfig_pair | |
| 60 are pairs containing the mozconfig's identifier and the list of lines in | |
| 61 the mozconfig.""" | |
| 62 | |
| 63 # unpack the pairs to get the names, the names are just for | |
| 64 # identifying the mozconfigs when logging the error messages | |
| 65 mozconfig_name, mozconfig_lines = mozconfig_pair | |
| 66 nightly_mozconfig_name, nightly_mozconfig_lines = nightly_mozconfig_pair | |
| 67 | |
| 68 missing_args = mozconfig_lines == [] or nightly_mozconfig_lines == [] | |
| 69 if missing_args: | |
| 70 log.info("Missing mozconfigs to compare for %s" % platform) | |
| 71 return False | |
| 72 | |
| 73 success = True | |
| 74 | |
| 75 diff_instance = difflib.Differ() | |
| 76 diff_result = diff_instance.compare(mozconfig_lines, nightly_mozconfig_lines) | |
| 77 diff_list = list(diff_result) | |
| 78 | |
| 79 for line in diff_list: | |
| 80 clean_line = line[1:].strip() | |
| 81 if (line[0] == '-' or line[0] == '+') and len(clean_line) > 1: | |
| 82 # skip comment lines | |
| 83 if clean_line.startswith('#'): | |
| 84 continue | |
| 85 # compare to whitelist | |
| 86 message = "" | |
| 87 if line[0] == '-': | |
| 88 if platform in mozconfigWhitelist.get('release', {}): | |
| 89 if clean_line in \ | |
| 90 mozconfigWhitelist['release'][platform]: | |
| 91 continue | |
| 92 elif line[0] == '+': | |
| 93 if platform in mozconfigWhitelist.get('nightly', {}): | |
| 94 if clean_line in \ | |
| 95 mozconfigWhitelist['nightly'][platform]: | |
| 96 continue | |
| 97 else: | |
| 98 log.warning("%s not in %s %s!" % ( | |
| 99 clean_line, platform, | |
| 100 mozconfigWhitelist['nightly'][platform])) | |
| 101 else: | |
| 102 log.error("Skipping line %s!" % line) | |
| 103 continue | |
| 104 message = "found in %s but not in %s: %s" | |
| 105 if line[0] == '-': | |
| 106 log.error(message % (mozconfig_name, | |
| 107 nightly_mozconfig_name, clean_line)) | |
| 108 else: | |
| 109 log.error(message % (nightly_mozconfig_name, | |
| 110 mozconfig_name, clean_line)) | |
| 111 success = False | |
| 112 return success | |
| 113 | |
| 114 def get_mozconfig(path, options): | |
| 115 """Consumes a path and returns a list of lines from | |
| 116 the mozconfig file. If download is required, the path | |
| 117 specified should be relative to the root of the hg | |
| 118 repository e.g browser/config/mozconfigs/linux32/nightly""" | |
| 119 if options.no_download: | |
| 120 return open(path, 'r').readlines() | |
| 121 else: | |
| 122 url = make_hg_url(options.hghost, options.branch, 'http', | |
| 123 options.revision, path) | |
| 124 return urllib2.urlopen(url).readlines() | |
| 125 | |
| 126 if __name__ == '__main__': | |
| 127 from optparse import OptionParser | |
| 128 parser = OptionParser() | |
| 129 | |
| 130 parser.add_option('--branch', dest='branch') | |
| 131 parser.add_option('--revision', dest='revision') | |
| 132 parser.add_option('--hghost', dest='hghost', default='hg.mozilla.org') | |
| 133 parser.add_option('--whitelist', dest='whitelist') | |
| 134 parser.add_option('--no-download', action='store_true', dest='no_download', | |
| 135 default=False) | |
| 136 options, args = parser.parse_args() | |
| 137 | |
| 138 logging.basicConfig(level=logging.INFO) | |
| 139 | |
| 140 missing_args = options.branch is None or options.revision is None | |
| 141 if not options.no_download and missing_args: | |
| 142 logging.error('Not enough arguments to download mozconfigs') | |
| 143 sys.exit(FAILURE_CODE) | |
| 144 | |
| 145 mozconfig_whitelist = readConfig(options.whitelist, ['whitelist']) | |
| 146 | |
| 147 for arg in args: | |
| 148 platform, mozconfig_path, nightly_mozconfig_path = arg.split(',') | |
| 149 | |
| 150 mozconfig_lines = get_mozconfig(mozconfig_path, options) | |
| 151 nightly_mozconfig_lines = get_mozconfig(nightly_mozconfig_path, options) | |
| 152 | |
| 153 mozconfig_pair = (mozconfig_path, mozconfig_lines) | |
| 154 nightly_mozconfig_pair = (nightly_mozconfig_path, | |
| 155 nightly_mozconfig_lines) | |
| 156 | |
| 157 passed = verify_mozconfigs(mozconfig_pair, nightly_mozconfig_pair, | |
| 158 platform, mozconfig_whitelist) | |
| 159 | |
| 160 if passed: | |
| 161 logging.info('Mozconfig check passed!') | |
| 162 else: | |
| 163 logging.error('Mozconfig check failed!') | |
| 164 sys.exit(FAILURE_CODE) | |
| 165 sys.exit(SUCCESS_CODE) |
