Change auto_bisect to post results to perf dashboard.

scripts/slave/recipe_modules/auto_bisect/bisect_results.py

-# Copyright 2015 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 json
-import re
-
-# Note: The Perf Dashboard specifically for the string "Status: Positive" when
-# deciding whether to CC authors on the bug.
-_RESULTS_BANNER = """
-===== BISECT JOB RESULTS =====
-Status: %(status)s
-
-Test Command: %(command)s
-Test Metric: %(metric)s
-Relative Change: %(change)s
-Score: %(score)s
-Retested CL with revert: %(retest)s
-
-"""
-
-# When the bisect was aborted without a bisect failure the following template
-# is used.
-_ABORT_REASON_TEMPLATE = """
-===== BISECTION ABORTED =====
-The bisect was aborted because %(abort_reason)s
-Please contact the the team (see below) if you believe this is in error.
-
-Bug ID: %(bug_id)s
-
-Test Command: %(command)s
-Test Metric: %(metric)s
-Good revision: %(good_revision)s
-Bad revision: %(bad_revision)s
-
-"""
-
-# The perf dashboard specifically looks for the string
-# "Author  : " to parse out who to cc on a bug. If you change the
-# formatting here, please update the perf dashboard as well.
-_RESULTS_REVISION_INFO = """
-===== SUSPECTED CL(s) =====
-Subject : %(subject)s
-Author  : %(author)s
-Commit description:
-  %(commit_info)s
-Commit  : %(cl)s
-Date    : %(cl_date)s
-
-"""
-
-_REVISION_TABLE_TEMPLATE = """
-===== TESTED REVISIONS =====
-%(table)s
-
-"""
-
-_RESULTS_THANKYOU = """
-| O O | Visit http://www.chromium.org/developers/speed-infra/perf-bug-faq
-|  X  | for more information addressing perf regression bugs. For feedback,
-| / \\ | file a bug with label Cr-Tests-AutoBisect.  Thank you!"""
-
-
-_WARNINGS_TEMPLATE = """
-===== WARNINGS =====
-The following warnings were raised by the bisect job:
-
- * %(warnings)s
-
-"""
-
-_FAILED_INITIAL_CONFIDENCE_ABORT_REASON = (
-    'The metric values for the initial "good" and "bad" revisions '
-    'do not represent a clear regression.')
-
-_DIRECTION_OF_IMPROVEMENT_ABORT_REASON = (
-    'The metric values for the initial "good" and "bad" revisions match the '
-    'expected direction of improvement. Thus, likely represent an improvement '
-    'and not a regression.')
-
-_REQUIRED_RESULTS_CONFIDENCE = 95.0
-
-
-class BisectResults(object):
-
-  def __init__(self, bisector, partial=False):
-    """Create a new results object from a finished bisect job."""
-    if not bisector.bisect_over and not partial:
-      raise ValueError(
-          'Invalid parameter, the bisect must be over by the time the '
-          'BisectResults constructor is called')  # pragma: no cover
-    self._bisector = bisector
-    self.results_confidence = None
-    self.abort_reason = None
-    self.culprit_cl_hash = None
-    self.commit_info = None
-    self.culprit_author = None
-    self.culprit_subject = None
-    self.culprit_date = None
-    self.partial = partial
-    self._gather_results()
-
-  def as_string(self):
-    return self._make_header() + self._make_body() + self._make_footer()
-
-  def _make_header(self):
-    # Unconditionally include this string at the top of the results since it is
-    # used by the dashboard to separate the bisect results from other buildbot
-    # output.
-    if self.partial:
-      return '---partial bisect results start here---\n'
-    header = '---bisect results start here---\n'
-    if not self.abort_reason:
-      header += _RESULTS_BANNER % {
-          'status': self.status,
-          'command': self.command,
-          'metric': self.metric,
-          'change': self.relative_change,
-          'score': self.results_confidence,
-          'retest': 'Not Implemented.'
-      }
-    else:
-      header += _ABORT_REASON_TEMPLATE % {
-          'abort_reason': self.abort_reason,
-          'bug_id': self.bug_id,
-          'command': self.command,
-          'metric': self.metric,
-          'good_revision': self.good_revision,
-          'bad_revision': self.bad_revision
-      }
-    if self.warnings and not self.partial:
-      header += _WARNINGS_TEMPLATE % {'warnings': '\n * '.join(self.warnings)}
-    return header
-
-  def _make_body(self):
-    body = ''
-    if self.culprit_cl_hash:
-      body += _RESULTS_REVISION_INFO % {
-          'subject': self.culprit_subject,
-          'author': self.culprit_author,
-          'cl_date': self.culprit_date,
-          'commit_info': self.commit_info,
-          'cl': self.culprit_cl_hash
-      }
-    body += self._compose_revisions_table()
-    return body.encode('ascii', 'replace')
-
-  def _make_footer(self):
-    if self.partial:
-      return '----End of partial results----'
-    return _RESULTS_THANKYOU
-
-  def _gather_results(self):
-    # TODO(robertocn): Add viewcl link here.
-    # TODO(robertocn): Merge this into constructor.
-    bisector = self._bisector
-    config = bisector.bisect_config
-
-    # TODO(robertocn): Add platform here.
-    self.relative_change = bisector.relative_change
-    self.warnings = bisector.warnings
-    self.command = config['command']
-    self.metric = config['metric']
-    self.bug_id = config.get('bug_id')
-    self.good_revision = bisector.good_rev.commit_hash
-    self.bad_revision = bisector.bad_rev.commit_hash
-
-    self.is_telemetry = ('tools/perf/run_' in self.command or
-                         'tools\\perf\\run_' in self.command)
-
-    if self.is_telemetry:
-      self.telemetry_command = re.sub(r'--browser=[^\s]+',
-                                      '--browser=<bot-name>',
-                                      self.command)
-
-    self.culprit_cl_hash = None
-    if bisector.culprit:
-      self._set_culprit_attributes(bisector.culprit)
-      self.results_confidence = bisector.api.m.math_utils.confidence_score(
-          bisector.lkgr.values, bisector.fkbr.values)
-
-    if bisector.failed_initial_confidence:
-      self.abort_reason = _FAILED_INITIAL_CONFIDENCE_ABORT_REASON
-    elif bisector.failed_direction:
-      self.abort_reason = _DIRECTION_OF_IMPROVEMENT_ABORT_REASON
-
-    if self.partial:
-      self.status = 'Partial Results only.'
-    elif bisector.failed:
-      self.status = 'Negative: Failed to bisect.'
-    elif self.results_confidence > _REQUIRED_RESULTS_CONFIDENCE:
-      self.status = 'Positive: A suspected commit was found.'
-      self._bisector.surface_result('CULPRIT_FOUND')
-    else:
-      self.status = ('Negative: Completed, but no culprit was found with '
-                     'high confidence.')
-      self._bisector.surface_result('LO_FINAL_CONF')
-
-  def _set_culprit_attributes(self, culprit):
-    self.culprit_cl_hash = None
-    api = self._bisector.api
-    if culprit:
-      self.culprit_cl_hash = culprit.deps_revision or culprit.commit_hash
-      culprit_info = api.query_revision_info(
-          self.culprit_cl_hash, culprit.depot_name)
-      self.culprit_subject = culprit_info['subject']
-      self.culprit_author = (culprit_info['author'] + ', ' +
-                             culprit_info['email'])
-      self.commit_info = culprit_info['body']
-      self.culprit_date = culprit_info['date']
-
-  def _compose_revisions_table(self):
-    def revision_row(r):
-      result = [
-          r.depot_name,
-          r.deps_revision or 'r' + str(r.commit_pos),
-          _format_number(r.mean_value),
-          _format_number(r.std_dev),
-          len(r.values),
-          'good' if r.good else 'bad' if r.bad else 'unknown',
-          '<-' if self._bisector.culprit == r else '',
-      ]
-      return map(str, result)
-
-    is_return_code = self._bisector.is_return_code_mode()
-    headers_row = [[
-        'Depot',
-        'Revision',
-        'Mean Value' if not is_return_code else 'Exit Code',
-        'Std. Dev.',
-        'Num Values',
-        'Good?',
-        '',
-    ]]
-    revision_rows = [revision_row(r)
-                     for r in self._bisector.revisions
-                     if r.tested or r.aborted]
-    all_rows = headers_row + revision_rows
-    return _REVISION_TABLE_TEMPLATE % {'table': pretty_table(all_rows)}
-
-
-def _format_number(x):
-  if x is None:
-    return 'N/A'
-  if isinstance(x, int):
-    return str(x)
-  return str(round(x, 6))
-
-
-def pretty_table(data):
-  """Arrange a matrix of strings into an ascii table.
-
-  This function was ripped off directly from somewhere in skia. It is
-  inefficient and so, should be avoided for large data sets.
-
-  Args:
-    data (list): A list of lists of strings containing the data to tabulate. It
-      is expected to be rectangular.
-
-  Returns: A multi-line string containing the data arranged in a tabular manner.
-  """
-  result = ''
-  column_widths = [0] * len(data[0])
-  for row in data:
-    column_widths = [max(longest_len, len(prop)) for
-                     longest_len, prop in zip(column_widths, row)]
-  for row in data:
-    is_culprit_row = row[-1] == '<-'
-    if is_culprit_row:
-      result += '\n'
-    for prop, width in zip(row, column_widths):
-      result += prop.ljust(width + 1)
-    result += '\n'
-    if is_culprit_row:
-      result += '\n'
-  return result