[Findit] Pass changed files info to Fracas, 2 face design.

appengine/findit/crash/results.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.
 
-_INFINITY = 1000
-
 
 class Result(object):
   """Represents findit culprit result."""
 
   def __init__(self, changelog, dep_path,
-               confidence=None, reason=None):
+               confidence=None, reasons=None, changed_files=None):
     self.changelog = changelog
     self.dep_path = dep_path
     self.confidence = confidence
-    self.reason = reason
+    self.reasons = reasons
+    self.changed_files = changed_files
 
     self.file_to_stack_infos = {}
+    self.file_to_analysis_info = {}
 
   def ToDict(self):
     return {
         'url': self.changelog.commit_url,
         'review_url': self.changelog.code_review_url,
         'revision': self.changelog.revision,
         'project_path': self.dep_path,
         'author': self.changelog.author_email,
         'time': str(self.changelog.author_time),
-        'reason': self.reason,
+        'reasons': self.reasons,
+        'changed_files': self.changed_files,
         'confidence': self.confidence,
     }
 
   def ToString(self):
     if not self.file_to_stack_infos:
       return ''
 
     lines = []
     for file_path, stack_infos in self.file_to_stack_infos.iteritems():
       line_parts = []
       for frame, _ in stack_infos:
         line_parts.append('frame #%d' % frame.index)
 
       lines.append('Changed file %s crashed in %s' % (
           file_path, ', '.join(line_parts)))
 
     return '\n'.join(lines)
 
   def __str__(self):
     return self.ToString()
 
 
 class MatchResult(Result):
   """Represents findit culprit result got from match algorithm."""
 
-  def __init__(self, changelog, dep_path,
-               confidence=None, reason=None):
-    super(MatchResult, self).__init__(
-        changelog, dep_path, confidence, reason)
-
-    self.min_distance = _INFINITY
-
   def Update(self, file_path, stack_infos, blame):
     """Updates a match result with file path and its stack_infos and blame.
 
     When a file_path is found both shown in stacktrace and touched by
     the revision of this result, update result with the information of
     this file.
 
     Inserts the file path and its stack infos, and updates the min distance
     if less distance is found between touched lines of this result and
     crashed lines in the file path.
 
     Args:
       file_path (str): File path of the crashed file.
-      stack_infos (list): List of (StackFrame, callstack priority) tuples,
-        represents frames of this file and the callstack priorities of those
-        frames.
+      stack_infos (list): List of stack_info dicts, represents frames of this
+        file and the callstack priorities of those frames.
       blame (Blame): Blame oject of this file.
     """
     self.file_to_stack_infos[file_path] = stack_infos
 
     if not blame:
       return
 
+    min_distance = float('inf')
+    min_distance_frame = None
     for region in blame:
       if region.revision != self.changelog.revision:
         continue
 
       region_lines = range(region.start, region.start + region.count)
 
       for frame, _ in stack_infos:
-        self.min_distance = min(self.min_distance, self._DistanceOfTwoRegions(
-            frame.crashed_line_numbers, region_lines))
+        distance = self._DistanceOfTwoRegions(frame.crashed_line_numbers,
+                                              region_lines)
+        if distance < min_distance:
+          min_distance = distance
+          min_distance_frame = frame
+
+    self.file_to_analysis_info[file_path] = {
+        'min_distance': min_distance,
+        'min_distance_frame': min_distance_frame,
+    }
 
   def _DistanceOfTwoRegions(self, region1, region2):
     if set(region1).intersection(set(region2)):
       return 0
 
     if region1[-1] < region2[0]:
       return region2[0] - region1[-1]
 
     return region1[0] - region2[-1]
 
 
 class MatchResults(dict):
   """A dict indexing MatchResult with its revision."""
 
   def __init__(self, ignore_cls=None):
     super(MatchResults, self).__init__()
     self.ignore_cls = ignore_cls
 
   def GenerateMatchResults(self, file_path, dep_path,
                            stack_infos, changelogs, blame):
     """Generates match results.
 
     Match results are generated based on newly found file path, its stack_infos,
     and all the changelogs that touched this file in the dep in regression
     ranges, those reverted changelogs should be ignored.
 
     Args:
       file_path (str): File path of the crashed file.
       dep_path (str): Path of the dependency of the file.
-      stack_infos (list): List of (StackFrame, callstack priority) tuples,
-        represents frames of this file and the callstack priorities of those
-        frames.
+      stack_infos (list): List of stack_info dicts, represents frames of this
+        file and the callstack priorities of those frames.
       changelogs (list): List of Changelog objects in the dep in regression
         range which touched the file.
       blame (Blame): Blame of the file.
     """
     for changelog in changelogs:
       if self.ignore_cls and changelog.revision in self.ignore_cls:
         continue
 
       if changelog.revision not in self:
         self[changelog.revision] = MatchResult(changelog, dep_path)
 
       match_result = self[changelog.revision]
-
       match_result.Update(file_path, stack_infos, blame)