[Findit] Add a sub-pipeline to detect first-known failure.

appengine/findit/model/build.py

 # Copyright (c) 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.
 
-import calendar
-
 from google.appengine.ext import ndb
 
-from model.build_analysis_status import BuildAnalysisStatus
+from model.base_model import BaseModel
 
 
-class Build(ndb.Model):
-  """Represent a build cycle of a builder in a waterfall."""
+class Build(BaseModel):
+  """Represents a build cycle of a builder in a waterfall."""
 
   @staticmethod
   def CreateKey(master_name, builder_name, build_number):  # pragma: no cover
     return ndb.Key(
         'Master', master_name, 'Builder', builder_name, 'Build', build_number)
 
   @staticmethod
   def CreateBuild(master_name, builder_name, build_number):  # pragma: no cover
-    """Create a Build instance, but not save it to datastore."""
-    return Build(key=Build.CreateKey(master_name, builder_name, build_number),
-                 master_name=master_name,
-                 builder_name=builder_name,
-                 build_number=build_number)
+    return Build(key=Build.CreateKey(master_name, builder_name, build_number))
 
   @staticmethod
   def GetBuild(master_name, builder_name, build_number):  # pragma: no cover
     return Build.CreateKey(master_name, builder_name, build_number).get()
 
-  def Reset(self):
-    """Reset to the state as if no analysis is run."""
-    self.analysis_status = BuildAnalysisStatus.PENDING
-    self.analysis_start_time = None
-    self.analysis_updated_time = None
+  data = ndb.JsonProperty(indexed=False, compressed=True)
+  last_crawled_time = ndb.DateTimeProperty(indexed=False)
 
-  # Information of the build.
-  master_name = ndb.StringProperty(indexed=False)
-  builder_name = ndb.StringProperty(indexed=False)
-  build_number = ndb.IntegerProperty(indexed=False)
-
-  # Information of analysis processing.
-  analysis_status = ndb.IntegerProperty(
-      default=BuildAnalysisStatus.PENDING, indexed=False)
-  analysis_start_time = ndb.DateTimeProperty(indexed=False)
-  analysis_updated_time = ndb.DateTimeProperty(indexed=False)
+  start_time = ndb.DateTimeProperty(indexed=False)
+  completed = ndb.BooleanProperty(default=False, indexed=False)
+  result = ndb.IntegerProperty(indexed=False)