These are the database objects used while finding the regression range. 1/3

appengine/findit/model/flake/flake_swarming_task.py

+# Copyright 2016 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.
+
+from google.appengine.ext import ndb
+
+from common import constants
+from model import analysis_status
+from model.base_swarming_task import BaseSwarmingTask
+from model.base_build_model import BaseBuildModel
+
+class FlakeSwarmingTask(BaseSwarmingTask, BaseBuildModel):
+  """Represents a swarming task for a step w/candidate flaky tests.
+  """

[lijeffrey, 2016/07/22 00:23:38]

nit: closing """ fits on previous line

+
+  @staticmethod
+  def CreateSwarmingTaskId(
+      master_name, builder_name, build_number,
+      step_name, test_name):  # pragma: no cover
+    return '%s/%s/%s/%s/%s' % (master_name, builder_name,
+                               build_number, step_name, test_name)
+
+  @staticmethod
+  def _CreateKey(
+       master_name, builder_name, build_number,
+       step_name, test_name):  # pragma: no cover
+    return ndb.Key('FlakeSwarmingTask',
+                   FlakeSwarmingTask.CreateSwarmingTaskId(
+                       master_name, builder_name, build_number,
+                       step_name, test_name))
+
+  @staticmethod
+  def Create(
+      master_name, builder_name, build_number,
+      step_name, test_name):  # pragma: no cover
+    return FlakeSwarmingTask(key=FlakeSwarmingTask._CreateKey(
+      master_name, builder_name, build_number, step_name, test_name))
+
+  @ndb.ComputedProperty
+  def step_name(self):
+    return self.key.pairs()[0][1].split('/')[3]
+
+  @ndb.ComputedProperty
+  def test_name(self):
+    return self.key.pairs()[0][1].split('/')[4]
+
+

[lijeffrey, 2016/07/22 00:23:38]

nit: remove extra empty line before @staticmethod. run gpylint <this file> to
see if it complains about other style nits

+  @staticmethod
+  def Get(
+      master_name, builder_name, build_number,
+      step_name, test_name):  # pragma: no cover
+    return FlakeSwarmingTask._CreateKey(
+        master_name, builder_name, build_number, step_name, test_name).get(

[lijeffrey, 2016/07/22 00:23:38]

line too long. find a way to put .get() in the same line

+)
+  # Number of runs the test passed.
+  successes = ndb.IntegerProperty(default=0, indexed=False)
+  # How many times the test was rerun.
+  tries = ndb.IntegerProperty(default=0, indexed=False)