Change auto_bisect to post results to perf dashboard.

scripts/slave/recipe_modules/auto_bisect/bisect_results_json.py

Index: scripts/slave/recipe_modules/auto_bisect/bisect_results_json.py
diff --git a/scripts/slave/recipe_modules/auto_bisect/bisect_results_json.py b/scripts/slave/recipe_modules/auto_bisect/bisect_results_json.py
new file mode 100644
index 0000000000000000000000000000000000000000..12c4d6376478afcac90e21c95ab2281d9467bb7d
--- /dev/null
+++ b/scripts/slave/recipe_modules/auto_bisect/bisect_results_json.py
@@ -0,0 +1,88 @@
+# 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.
+
+# Note: The Perf Dashboard will display these data.  Any changes here should
+# be updated on Perf Dashboard as well.
+
+_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.')
+
+
+def get(bisector):

[qyearsley, 2016/01/11 22:49:43]

What do you think about making this a method of Bisector?

[RobertoCN, 2016/01/12 20:47:29]

+1

[chrisphan, 2016/01/14 00:53:26]

Done.

+  """Returns the results as a jsonable object."""
+  config = bisector.bisect_config
+  results_confidence = 0
+  if bisector.culprit:
+    results_confidence = bisector.api.m.math_utils.confidence_score(
+        bisector.lkgr.values, bisector.fkbr.values)
+
+  if bisector.failed:
+    status = 'failed'
+  elif bisector.bisect_over:
+    status = 'completed'
+  else:
+    status = 'started'
+
+  fail_reason = None
+  if bisector.failed_initial_confidence:
+    fail_reason = _FAILED_INITIAL_CONFIDENCE_ABORT_REASON
+  elif bisector.failed_direction:
+    fail_reason = _DIRECTION_OF_IMPROVEMENT_ABORT_REASON
+  return {
+      'try_job_id': config.get('try_job_id'),
+      'bug_id': config.get('bug_id'),
+      'status': status,
+      'buildbot_log_url': '',  # TODO(chrisphan) Get this.
+      'bisect_bot': bisector.get_perf_tester_name(),
+      'command': config['command'],
+      'metric': config['metric'],
+      'change': bisector.relative_change,
+      'score': results_confidence,
+      'good_revision': bisector.good_rev.commit_hash,
+      'bad_revision': bisector.bad_rev.commit_hash,
+      'warnings': bisector.warnings,
+      'fail_reason': fail_reason,
+      'culprit_data': _culprit_data(bisector),
+      'revision_data': _revision_data(bisector)
+  }
+

[qyearsley, 2016/01/11 22:49:43]

Nit: two spaces between top-level functions

[chrisphan, 2016/01/14 00:53:26]

Done.

+def _culprit_data(bisector):
+  culprit = bisector.culprit
+  api = bisector.api
+  if not culprit:
+    return None
+  culprit_cl_hash = culprit.deps_revision or culprit.commit_hash
+  culprit_info = api.query_revision_info(
+      culprit_cl_hash, culprit.depot_name)
+
+  return {
+     'subject': culprit_info['subject'],
+     'author': culprit_info['author'],
+     'email': culprit_info['email'],
+     'cl_date': culprit_info['date'],
+     'commit_info': culprit_info['body'],
+     'revisions_links': [],
+     'cl': culprit.deps_revision or culprit.commit_hash
+  }
+
+def _revision_data(bisector):
+  revision_rows = []
+  for r in bisector.revisions:
+    if r.tested or r.aborted:
+      revision_rows.append({
+          'depot_name': r.depot_name,
+          'deps_revision': r.deps_revision,
+          'commit_pos': r.commit_pos,
+          'mean_value': r.mean_value,
+          'std_dev': r.std_dev,
+          'values': r.values,
+          'result': 'good' if r.good else 'bad' if r.bad else 'unknown',
+      })
+  return revision_rows