Change auto_bisect to post results to perf dashboard.

scripts/slave/recipe_modules/perf_try/bisect_results_json.py

Index: scripts/slave/recipe_modules/perf_try/bisect_results_json.py
diff --git a/scripts/slave/recipe_modules/perf_try/bisect_results_json.py b/scripts/slave/recipe_modules/perf_try/bisect_results_json.py
new file mode 100644
index 0000000000000000000000000000000000000000..e99045ff8ff3c2b13ce5f7924b3966e72730a1f4
--- /dev/null
+++ b/scripts/slave/recipe_modules/perf_try/bisect_results_json.py
@@ -0,0 +1,97 @@
+# 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(api, config, results_without_patch, results_with_patch, labels):

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

Might it be potentially clearer if this module is renamed, since there's already
another bisect_results_json.py in auto_bisect/?

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

Moved this to perf_try/api for consistency.  This was meant to differentiate
from auto_bisect/bisect_results and legacy's bisect_printer.py.

+  """Returns the results as a dict."""
+
+  output_with_patch = results_with_patch.get('output')
+  output_without_patch = results_without_patch.get('output')
+  values_with_patch = results_with_patch.get('results').get('values')
+  values_without_patch = results_without_patch.get('results').get('values')
+
+  cloud_links_without_patch = api.parse_cloud_links(output_without_patch)
+  cloud_links_with_patch = api.parse_cloud_links(output_with_patch)
+
+  cloud_link = (cloud_links_without_patch['html'][0]
+                if cloud_links_without_patch['html'] else '')
+
+  results = {
+      'try_job_id': config.get('try_job_id'),
+      'status': 'completed',  # TODO(chrisphan) Get partial results state.
+      'buildbot_log_url': '',  # TODO(chrisphan) Get this.
+      'bisect_bot': '',  # TODO(chrisphan): Get this.
+      'command': config.get('command'),
+      'metric': config.get('metric'),
+      'cloud_link': cloud_link,
+  }
+
+  if not values_with_patch or not values_without_patch:
+    results['warnings'] = ['No values from test with patch, or none '
+        'from test without patch.\n Output with patch:\n%s\n\nOutput without '
+        'patch:\n%s' % (output_with_patch, output_without_patch)]
+    return results
+
+  mean_with_patch = api.m.math_utils.mean(values_with_patch)
+  mean_without_patch = api.m.math_utils.mean(values_without_patch)
+
+  stderr_with_patch = api.m.math_utils.standard_error(values_with_patch)
+  stderr_without_patch = api.m.math_utils.standard_error(
+      values_without_patch)
+
+  profiler_with_patch = cloud_links_with_patch['profiler']
+  profiler_without_patch = cloud_links_without_patch['profiler']
+
+  # Calculate the % difference in the means of the 2 runs.
+  relative_change = None
+  std_err = None
+  if mean_with_patch and values_with_patch:
+    relative_change = api.m.math_utils.relative_change(
+        mean_without_patch, mean_with_patch) * 100
+    std_err = api.m.math_utils.pooled_standard_error(
+        [values_with_patch, values_without_patch])
+
+  if relative_change is not None and std_err is not None:
+    data = [
+        ['Revision', 'Mean', 'Std.Error'],
+        ['Patch', str(mean_with_patch), str(stderr_with_patch)],
+        ['No Patch', str(mean_without_patch), str(stderr_without_patch)]
+    ]
+    results['change'] = relative_change
+    results['std_err'] = std_err
+    results['result'] = _pretty_table(data)
+
+  profiler_links = []
+  if profiler_with_patch and profiler_without_patch:
+    for i in xrange(len(profiler_with_patch)):  # pragma: no cover
+      profiler_links.append({
+        'title': '%s[%d]' % (labels.get('profiler_link1'), i),
+        'link': profiler_with_patch[i]
+      })
+    for i in xrange(len(profiler_without_patch)):  # pragma: no cover
+      profiler_links.append({
+        'title': '%s[%d]' % (labels.get('profiler_link2'), i),
+        'link': profiler_without_patch[i]
+      })
+  results['profiler_links'] = profiler_links
+
+  return results
+
+def _pretty_table(data):
+  results = []
+  for row in data:
+    results.append('%-15s' * len(row) % tuple(row))
+  return '\n'.join(results)