import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

build/compare-mozconfig/compare-mozconfigs.py

@@ -0,0 +1,170 @@
+#!/usr/bin/python
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# originally from http://hg.mozilla.org/build/tools/file/4ab9c1a4e05b/scripts/release/compare-mozconfigs.py
+
+from __future__ import unicode_literals
+
+import logging
+import os
+import site
+import sys
+import urllib2
+import difflib
+
+FAILURE_CODE = 1
+SUCCESS_CODE = 0
+
+log = logging.getLogger(__name__)
+
+class ConfigError(Exception):
+    pass
+
+def make_hg_url(hgHost, repoPath, protocol='https', revision=None,
+                filename=None):
+    """construct a valid hg url from a base hg url (hg.mozilla.org),
+    repoPath, revision and possible filename"""
+    base = '%s://%s' % (protocol, hgHost)
+    repo = '/'.join(p.strip('/') for p in [base, repoPath])
+    if not filename:
+        if not revision:
+            return repo
+        else:
+            return '/'.join([p.strip('/') for p in [repo, 'rev', revision]])
+    else:
+        assert revision
+        return '/'.join([p.strip('/') for p in [repo, 'raw-file', revision,
+                         filename]])
+
+def readConfig(configfile, keys=[], required=[]):
+    c = {}
+    execfile(configfile, c)
+    for k in keys:
+        c = c[k]
+    items = c.keys()
+    err = False
+    for key in required:
+        if key not in items:
+            err = True
+            log.error("Required item `%s' missing from %s" % (key, c))
+    if err:
+        raise ConfigError("Missing at least one item in config, see above")
+    return c
+
+def verify_mozconfigs(mozconfig_pair, nightly_mozconfig_pair, platform,
+                      mozconfigWhitelist={}):
+    """Compares mozconfig to nightly_mozconfig and compare to an optional
+    whitelist of known differences. mozconfig_pair and nightly_mozconfig_pair
+    are pairs containing the mozconfig's identifier and the list of lines in
+    the mozconfig."""
+
+    # unpack the pairs to get the names, the names are just for
+    # identifying the mozconfigs when logging the error messages
+    mozconfig_name, mozconfig_lines = mozconfig_pair
+    nightly_mozconfig_name, nightly_mozconfig_lines = nightly_mozconfig_pair
+
+    missing_args = mozconfig_lines == [] or nightly_mozconfig_lines == []
+    if missing_args:
+        log.info("Missing mozconfigs to compare for %s" % platform)
+        return False
+
+    success = True
+
+    diff_instance = difflib.Differ()
+    diff_result = diff_instance.compare(mozconfig_lines, nightly_mozconfig_lines)
+    diff_list = list(diff_result)
+
+    for line in diff_list:
+        clean_line = line[1:].strip()
+        if (line[0] == '-' or line[0] == '+') and len(clean_line) > 1:
+            # skip comment lines
+            if clean_line.startswith('#'):
+                continue
+            # compare to whitelist
+            message = ""
+            if line[0] == '-':
+                # handle lines that move around in diff
+                if '+' + line[1:] in diff_list:
+                    continue
+                if platform in mozconfigWhitelist.get('release', {}):
+                    if clean_line in \
+                            mozconfigWhitelist['release'][platform]:
+                        continue
+            elif line[0] == '+':
+                if '-' + line[1:] in diff_list:
+                    continue
+                if platform in mozconfigWhitelist.get('nightly', {}):
+                    if clean_line in \
+                            mozconfigWhitelist['nightly'][platform]:
+                        continue
+                    else:
+                        log.warning("%s not in %s %s!" % (
+                            clean_line, platform,
+                            mozconfigWhitelist['nightly'][platform]))
+            else:
+                log.error("Skipping line %s!" % line)
+                continue
+            message = "found in %s but not in %s: %s"
+            if line[0] == '-':
+                log.error(message % (mozconfig_name,
+                                     nightly_mozconfig_name, clean_line))
+            else:
+                log.error(message % (nightly_mozconfig_name,
+                                     mozconfig_name, clean_line))
+            success = False
+    return success
+
+def get_mozconfig(path, options):
+    """Consumes a path and returns a list of lines from
+    the mozconfig file. If download is required, the path
+    specified should be relative to the root of the hg
+    repository e.g browser/config/mozconfigs/linux32/nightly"""
+    if options.no_download:
+        return open(path, 'r').readlines()
+    else:
+        url = make_hg_url(options.hghost, options.branch, 'http',
+                    options.revision, path)
+        return urllib2.urlopen(url).readlines()
+
+if __name__ == '__main__':
+    from optparse import OptionParser
+    parser = OptionParser()
+
+    parser.add_option('--branch', dest='branch')
+    parser.add_option('--revision', dest='revision')
+    parser.add_option('--hghost', dest='hghost', default='hg.mozilla.org')
+    parser.add_option('--whitelist', dest='whitelist')
+    parser.add_option('--no-download', action='store_true', dest='no_download',
+                      default=False)
+    options, args = parser.parse_args()
+
+    logging.basicConfig(level=logging.INFO)
+
+    missing_args = options.branch is None or options.revision is None
+    if not options.no_download and missing_args:
+        logging.error('Not enough arguments to download mozconfigs')
+        sys.exit(FAILURE_CODE)
+
+    mozconfig_whitelist = readConfig(options.whitelist, ['whitelist'])
+
+    for arg in args:
+        platform, mozconfig_path, nightly_mozconfig_path = arg.split(',')
+
+        mozconfig_lines = get_mozconfig(mozconfig_path, options)
+        nightly_mozconfig_lines = get_mozconfig(nightly_mozconfig_path, options)
+
+        mozconfig_pair = (mozconfig_path, mozconfig_lines)
+        nightly_mozconfig_pair = (nightly_mozconfig_path,
+                                  nightly_mozconfig_lines)
+
+        passed = verify_mozconfigs(mozconfig_pair, nightly_mozconfig_pair,
+                                   platform, mozconfig_whitelist)
+
+        if passed:
+            logging.info('Mozconfig check passed!')
+        else:
+            logging.error('Mozconfig check failed!')
+            sys.exit(FAILURE_CODE)
+    sys.exit(SUCCESS_CODE)