Changes to support One-Click Revert in Commit Queue

verification/committer_revert.py

+#!/usr/bin/env python
+# Copyright (c) 2013 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.
+
+"""The revert checkbox must be checked by a project committer."""
+
+
+from verification import base
+
+import re
+
+
+class CommitterRevertStatus(base.SimpleStatus):
+
+  NO_COMMITTER = (
+      'Revert was not triggered by a project committer. Only full committers\n'
+      'are accepted.'
+  )
+
+  def __init__(self, pending, committers, **kwargs):
+    super(CommitterRevertStatus, self).__init__(**kwargs)
+    if pending:
+      self._check(pending, committers)
+
+  def _check(self, pending, committers):
+    """Updates self.state and self.error_message properties."""
+    if any(re.match(i, pending.reverted_by) for i in committers):
+      self.state = base.SUCCEEDED
+    else:
+      self.error_message = self.NO_COMMITTER
+      self.state = base.FAILED
+
+
+class CommitterRevertVerifier(base.Verifier):
+  """The revert must be triggered by a project committer."""
+
+  name = 'committer_revert'
+
+  def __init__(self, committers):
+    super(CommitterRevertVerifier, self).__init__()
+    self.committers = committers
+
+  def verify(self, pending):
+    assert pending.revert
+    pending.verifications[self.name] = CommitterRevertStatus(
+        pending=pending, committers=self.committers)
+
+  def update_status(self, queue):
+    pass