Update legacy bisect to post results to perf dashboard.

tools/auto_bisect/bisect_results_json.py

Index: tools/auto_bisect/bisect_results_json.py
diff --git a/tools/auto_bisect/bisect_results_json.py b/tools/auto_bisect/bisect_results_json.py
new file mode 100644
index 0000000000000000000000000000000000000000..38c0dacb6c8ea0c196f6a521c347f82946952f73
--- /dev/null
+++ b/tools/auto_bisect/bisect_results_json.py
@@ -0,0 +1,78 @@
+# 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.
+
+

[qyearsley, 2016/01/26 18:08:01]

No need for two blank lines before the imports

[chrisphan, 2016/02/10 02:23:38]

Done.

+import bisect_utils
+import source_control
+
+
+def get(bisect_results, opts, depot_registry):

[prasadv, 2016/02/09 21:20:38]

Method names areinconsistent with other modules

[chrisphan, 2016/02/10 02:23:38]

What are you looking for here?  get_bisect_results/get_results?

[qyearsley, 2016/02/10 02:53:53]

Function names in Chromium repo are CapitalCamelCase, so this method should be
Get.

+  """Returns the results as a jsonable object."""
+  if opts.bisect_mode == bisect_utils.BISECT_MODE_RETURN_CODE:
+    change = '0'
+  else:
+    metric = '/'.join(opts.metric)
+    change = '%.02f%%' % bisect_results.regression_size
+
+  status = 'completed'

[qyearsley, 2016/01/26 18:08:01]

Note: (As noted in another CL) previously "status" included either Positive or
Negative, in https://codereview.chromium.org/1573293002 we'll have to make sure
that the dashboard correctly CCs authors given the score.

[chrisphan, 2016/02/10 02:23:38]

Added this check in CL/1566013002.

[qyearsley, 2016/02/10 02:53:53]

SGTM

+
+  return {
+      'try_job_id': opts.try_job_id,
+      'bug_id': opts.bug_id,
+      'status': status,
+      'buildbot_log_url': '',  # TODO(chrisphan) Get this.

[prasadv, 2016/02/09 21:20:38]

Is it possible to use bot environmental variables to get these details?
BUILDBOT_BUILDBOTURL
BUILDBOT_BUILDERNAME
BUILDBOT_BUILDNUMBER

[chrisphan, 2016/02/10 02:23:38]

Thanks for that.  Done.

+      'bisect_bot': '',  # TODO(chrisphan): Get this.
+      'command': opts.command,
+      'metric': metric,
+      'change': change,
+      'score': bisect_results.confidence,
+      'good_revision': opts.good_revision,
+      'bad_revision': opts.bad_revision,
+      'warnings': bisect_results.warnings,
+      'abort_reason': bisect_results.abort_reason,
+      'culprit_data': _culprit_data(bisect_results),
+      'revision_data': _revision_data(bisect_results, depot_registry)
+  }
+
+
+def _culprit_data(bisect_results):
+  if not bisect_results.culprit_revisions:
+    return None
+  cl, culprit_info, depot = bisect_results.culprit_revisions[0]
+  commit_link = _GetViewVCLinkFromDepotAndHash(cl, depot)
+  if commit_link:
+    commit_link = '\nLink    : %s' % commit_link
+  else:
+    commit_link = ('\Description:\n%s' % culprit_info['body'])
+
+  return {
+      'subject': culprit_info['subject'],
+      'author': culprit_info['email'],
+      'email': culprit_info['email'],
+      'cl_date': culprit_info['date'],
+      'commit_info': commit_link,
+      'revisions_links': [],
+      'cl': cl
+  }
+
+
+def _revision_data(bisect_results, depot_registry):

[qyearsley, 2016/01/26 18:08:01]

Method names here (in the chromium repo) are CamelCase, e.g. Get, _CulpritData,
_RevisionData.

[chrisphan, 2016/02/10 02:23:38]

Done.

+  revision_rows = []
+  for state in bisect_results.state.GetRevisionStates():
+    commit_position = source_control.GetCommitPosition(
+        state.revision, depot_registry.GetDepotDir(state.depot))
+    revision_rows.append({
+        'depot_name': state.depot,
+        'deps_revision': state.revision,
+        'commit_pos': commit_position,
+        'result': 'good' if state.passed else 'bad',
+    })
+  return revision_rows
+
+
+def _GetViewVCLinkFromDepotAndHash(git_revision, depot):
+  """Gets link to the repository browser."""
+  if depot and 'viewvc' in bisect_utils.DEPOT_DEPS_NAME[depot]:
+    return bisect_utils.DEPOT_DEPS_NAME[depot]['viewvc'] + git_revision
+  return ''