ExceptionNotifier: a new MailNotifier which treats exceptions as failures.

scripts/master/exception_notifier.py

Index: scripts/master/exception_notifier.py
diff --git a/scripts/master/exception_notifier.py b/scripts/master/exception_notifier.py
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+# Copyright 2014 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.
+
+"""A fixed version of MailNotifier which treats exception as failure."""
+
+from buildbot.status import mail
+from buildbot.status.results import FAILURE, EXCEPTION
+
+class ExceptionNotifier(mail.MailNotifier):
+  """Same as MailNotifier that treats EXCEPTION as failure."""
+  def isMailNeeded(self, build, results):
+    builder = build.getBuilder()
+    if self.builders is not None and builder.name not in self.builders:
+      return False
+    if self.categories is not None and builder.category not in self.categories:
+      return False
+    if self.mode == 'failing' and results in [FAILURE, EXCEPTION]:
+      return True
+    return mail.MailNotifier.isMailNeeded(self, build, results)