Adding support for NOTREECHECKS

verification/tree_status.py

 # coding=utf8
 # 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.
 """Postpone commits until the tree is open."""
 
 import calendar
 import json
 import logging
+import re
 import ssl
 import time
 import urllib2
 
 from verification import base
 
 
 class TreeStatus(base.IVerifierStatus):
   tree_status_url = unicode
   issue = int
@@ skipping 29 matching lines @@
       return False
     except (ssl.SSLError, urllib2.URLError, ValueError):
       logging.error('Failed to request tree status! %s' % url)
       return True
 
   def why_not(self):
     if self.last_tree_status:
       return u'Tree is currently not open: %s' % self.last_tree_status
 
 
+class AlwaysOpenTreeStatus(TreeStatus):
+  """Used when tree status does not need to be checked."""
+  def postpone(self):
+    return False
+
+
 class TreeStatusVerifier(base.Verifier):
   """Checks the tree status before allowing a commit."""
   name = 'tree status'
 
   def __init__(self, tree_status_url):
     super(TreeStatusVerifier, self).__init__()
     self.tree_status_url = tree_status_url
 
   def verify(self, pending):
-    pending.verifications[self.name] = TreeStatus(
-        tree_status_url=self.tree_status_url, issue=pending.issue)
+    if re.search(r'(?im)^NOTREECHECKS=TRUE$', pending.description):
+      # Use a TreeStatus instance that always returns False for postpone().
+      tree_status = AlwaysOpenTreeStatus()
+    else:
+      tree_status = TreeStatus(
+          tree_status_url=self.tree_status_url, issue=pending.issue)
+
+    pending.verifications[self.name] = tree_status
 
   def update_status(self, queue):
     pass
+