[Findit] Adding improved error detection to MonitorTryJobPipeline

appengine/findit/model/wf_try_job_data.py

Index: appengine/findit/model/wf_try_job_data.py
diff --git a/appengine/findit/model/wf_try_job_data.py b/appengine/findit/model/wf_try_job_data.py
index cf9a4d588e157fac37626fe95a0c34ec48874f5c..2182651a453be704825eeefdce4885a5a1afebab 100644
--- a/appengine/findit/model/wf_try_job_data.py
+++ b/appengine/findit/model/wf_try_job_data.py
@@ -31,15 +31,11 @@ class WfTryJobData(ndb.Model):
   try_job_url = ndb.StringProperty(indexed=False)
   # Error message and reason, if any.
   error = ndb.JsonProperty(indexed=False)
+  # Error code if anything went wrong with the try job.
+  error_code = ndb.IntegerProperty(indexed=True)
   # The last buildbucket build response received.
   last_buildbucket_response = ndb.JsonProperty(indexed=False, compressed=True)
 
-  # TODO(lijeffrey): We may want to determine whether or not a try job
-  # was triggered as a redo of another if the first failed to find a culprit.
-  # For example, if passing compile targets yields no results, a redo without
-  # compile targets may be attempted to find the culprit CL and the occurrence
-  # documented in a queryable manner.
-
   @staticmethod
   def _CreateKey(build_id):  # pragma: no cover
     return ndb.Key('WfTryJobData', build_id)