[Predator] Generate all changelogs in regression ranges instead of only matched changelogs

appengine/findit/crash/scorers/aggregators.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.
-
-"""Aggregator aggregates scorer results list passed in."""
-
-class Aggregator(object):
-
-  def Aggregate(self, data_list):
-    raise NotImplementedError()
-
-  def __call__(self, data_list):
-    data_list = filter(lambda data: not data is None, data_list)
-    if not data_list:
-      return None
-
-    return self.Aggregate(data_list)
-
-
-# TODO(katesonia): Compare this mutiply aggregator with a vector of scores
-# aggregator later.
-class Multiplier(Aggregator):
-
-  def Aggregate(self, data_list):
-    result = 1.0
-    for data in data_list:
-      result *= data
-
-    return result
-
-
-class IdentityAggregator(Aggregator):
-
-  def Aggregate(self, data_list):
-    return data_list
-
-
-# TODO(crbug.com/674231): DRY vs
-# crash/loglinear/changelist_classifier.py's ``AggregateChangedFiles``.
-class ChangedFilesAggregator(Aggregator):
-  """Aggregates a list of changed files got from many scorers.
-
-  Note: This Aggregator only aggregates the info part of each changed file.
-
-  For example, the data_list is:
-  [
-      [
-          {
-              'file': 'f1',
-              'blame_url': 'https://blame1',
-              'info': 'f1 info scorer1'
-          },
-          {
-              'file': 'f2',
-              'blame_url': 'https://blame2',
-              'info': 'f2 info scorer1'
-          }
-      ],
-      [
-          {
-              'file': 'f1',
-              'blame_url': 'https://blame1',
-              'info': 'f1 info scorer2'
-          },
-          {
-              'file': 'f2',
-              'blame_url': 'https://blame2',
-              'info': 'f2 info scorer2'
-          }
-      ]
-  ]
-
-  Aggregated result should be:
-  [
-      {
-          'file': 'f1',
-          'blame_url': 'https://blame1',
-          'info': 'f1 info scorer1\nf1 info scorer2'
-      },
-      {
-          'file': 'f2',
-          'blame_url': 'https://blame2',
-          'info': 'f2 info scorer1\nf2 info scorer2'
-      }
-  ]
-  """
-
-  def Aggregate(self, data_list):
-
-    def AggregateFileInfos(file_info_list):
-      """Aggregates file infos from different scorers for one file."""
-      infos = []
-      for file_info in file_info_list:
-        if file_info['info']:
-          infos.append(file_info['info'])
-
-      return {
-          'file': file_info_list[0]['file'],
-          'blame_url': file_info_list[0]['blame_url'],
-          'info': '\n'.join(infos)
-      }
-
-    aggregated_changed_files = []
-    for data in zip(*data_list):
-      aggregated_changed_files.append(AggregateFileInfos(data))
-
-    return aggregated_changed_files