Allow presubmit_support to fetch issue data from Rietveld.

presubmit_support.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.6.2'
 
@@ skipping 1314 matching lines @@
                     "system directories will also be searched.")
   parser.add_option("--default_presubmit")
   parser.add_option("--may_prompt", action='store_true', default=False)
   parser.add_option("--skip_canned", action='append', default=[],
                     help="A list of checks to skip which appear in "
                     "presubmit_canned_checks. Can be provided multiple times "
                     "to skip multiple canned checks.")
   parser.add_option("--rietveld_url", help=optparse.SUPPRESS_HELP)
   parser.add_option("--rietveld_email", help=optparse.SUPPRESS_HELP)
   parser.add_option("--rietveld_password", help=optparse.SUPPRESS_HELP)
+  parser.add_option("--rietveld_fetch", action='store_true', default=False,
+                    help=optparse.SUPPRESS_HELP)
   options, args = parser.parse_args(argv)
   if options.verbose >= 2:
     logging.basicConfig(level=logging.DEBUG)
   elif options.verbose:
     logging.basicConfig(level=logging.INFO)
   else:
     logging.basicConfig(level=logging.ERROR)
   change_class, files = load_files(options, args)
   if not change_class:
     parser.error('For unversioned directory, <files> is not optional.')
   logging.info('Found %d file(s).' % len(files))
   rietveld_obj = None
   if options.rietveld_url:
     rietveld_obj = rietveld.CachingRietveld(
         options.rietveld_url,
         options.rietveld_email,
         options.rietveld_password)
+    if options.rietveld_fetch:
+      assert options.issue
+      props = rietveld_obj.get_issue_properties(options.issue, False)
+      options.author = props['owner_email']
+      options.description = props['description']
+      logging.info('Got author: "%s"', options.author)
+      logging.info('Got description: """\n%s\n"""', options.description)
   try:
     with canned_check_filter(options.skip_canned):
       results = DoPresubmitChecks(
           change_class(options.name,
                       options.description,
                       options.root,
                       files,
                       options.issue,
                       options.patchset,
                       options.author),
@@ skipping 12 matching lines @@
   except PresubmitFailure, e:
     print >> sys.stderr, e
     print >> sys.stderr, 'Maybe your depot_tools is out of date?'
     print >> sys.stderr, 'If all fails, contact maruel@'
     return 2
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(Main(None))