Reland Implement owners check in presubmit for Gerrit.

git_cl.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.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld and Gerrit."""
 
 from distutils.version import LooseVersion
@@ skipping 1297 matching lines @@
   def UpdateDescription(self, description):
     self.description = description
     return self._codereview_impl.UpdateDescriptionRemote(description)
 
   def RunHook(self, committing, may_prompt, verbose, change):
     """Calls sys.exit() if the hook fails; returns a HookResults otherwise."""
     try:
       return presubmit_support.DoPresubmitChecks(change, committing,
           verbose=verbose, output_stream=sys.stdout, input_stream=sys.stdin,
           default_presubmit=None, may_prompt=may_prompt,
-          rietveld_obj=self._codereview_impl.GetRieveldObjForPresubmit())
+          rietveld_obj=self._codereview_impl.GetRieveldObjForPresubmit(),
+          gerrit_obj=self._codereview_impl.GetGerritObjForPresubmit())
     except presubmit_support.PresubmitFailure, e:
       DieWithError(
           ('%s\nMaybe your depot_tools is out of date?\n'
            'If all fails, contact maruel@') % e)
 
   def CMDPatchIssue(self, issue_arg, reject, nocommit, directory):
     """Fetches and applies the issue patch from codereview to local branch."""
     if isinstance(issue_arg, (int, long)) or issue_arg.isdigit():
       parsed_issue_arg = _ParsedIssueNumberArgument(int(issue_arg))
     else:
@@ skipping 163 matching lines @@
 
   def PatchsetSetting(self):
     """Returns name of git config setting which stores issue number."""
     raise NotImplementedError()
 
   def GetRieveldObjForPresubmit(self):
     # This is an unfortunate Rietveld-embeddedness in presubmit.
     # For non-Rietveld codereviews, this probably should return a dummy object.
     raise NotImplementedError()
 
+  def GetGerritObjForPresubmit(self):
+    # None is valid return value, otherwise presubmit_support.GerritAccessor.
+    return None
+
   def UpdateDescriptionRemote(self, description):
     """Update the description on codereview site."""
     raise NotImplementedError()
 
   def CloseIssue(self):
     """Closes the issue."""
     raise NotImplementedError()
 
   def GetApprovingReviewers(self):
     """Returns a list of reviewers approving the change.
@@ skipping 586 matching lines @@
       def __getattr__(self, attr):
         print(
             'You aren\'t using Rietveld at the moment, but Gerrit.\n'
             'Using Rietveld in your PRESUBMIT scripts won\'t work.\n'
             'Please, either change your PRESUBIT to not use rietveld_obj.%s,\n'
             'or use Rietveld for codereview.\n'
             'See also http://crbug.com/579160.' % attr)
         raise NotImplementedError()
     return ThisIsNotRietveldIssue()
 
+  def GetGerritObjForPresubmit(self):
+    return presubmit_support.GerritAccessor(self._GetGerritHost())
+
   def GetStatus(self):
     """Apply a rough heuristic to give a simple summary of an issue's review
     or CQ status, assuming adherence to a common workflow.
 
     Returns None if no issue for this branch, or one of the following keywords:
       * 'error'    - error from review tool (including deleted issues)
       * 'unsent'   - no reviewers added
       * 'waiting'  - waiting for review
       * 'reply'    - waiting for owner to reply to review
       * 'not lgtm' - Code-Review -2 from at least one approved reviewer
@@ skipping 2736 matching lines @@
 if __name__ == '__main__':
   # These affect sys.stdout so do it outside of main() to simplify mocks in
   # unit testing.
   fix_encoding.fix_encoding()
   setup_color.init()
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)