def GetAutotestMetricValue(self, report_file):
"""Gets metric value from autotest benchmark report.
Report example:
{"avg_fps_1000_fishes": {
"summary": {
"units": "fps",
"type": "scalar",
"value": 56.733810392225671,
"improvement_direction": "up"
},
...,
},
...,
}
self.metric = "avg_fps_1000_fishes/summary/value"
Args:
report_file: Path to benchmark report.
Returns:
Metric value in benchmark report.
None if self.metric is undefined or metric does not exist in the report.
"""
if not self.metric:
return None
report = json_lib.ParseJsonFileWithComments(report_file)
metric_value = json_lib.GetNestedDictValue(report, self.metric.split('/'))
if metric_value is None:
logging.error('Cannot get metric %s from %s', self.metric, report_file)
return None
if self.metric_take_average:
return float(sum(metric_value)) / len(metric_value)
return metric_value
def testGetNestedDictValue(self):
"""Test that GetNestedDictValue is correct."""
NESTED_DICT = {
'lv1.1': {
'lv2.1': {'value': '1.1'},
'lv2.2': {'value': '1.2'}},
'lv1.2': {
'lv2.1': {'value': '2.1'},
'lv2.2': {'value': '2.2'}}}
self.assertEqual(
'1.1',
json_lib.GetNestedDictValue(NESTED_DICT, ['lv1.1', 'lv2.1', 'value']))
self.assertEqual(
'2.1',
json_lib.GetNestedDictValue(NESTED_DICT, ['lv1.2', 'lv2.1', 'value']))
# level 2 key missing
self.assertIsNone(
json_lib.GetNestedDictValue(NESTED_DICT, ['lv1.1', 'lv2.3', 'value']))
# level 1 key missing
self.assertIsNone(
json_lib.GetNestedDictValue(NESTED_DICT, ['lv1.3', 'lv2.1', 'value']))
# no level 3 key
self.assertIsNone(
json_lib.GetNestedDictValue(NESTED_DICT,
['lv1.1', 'lv2.1', 'lv3', 'value']))
# no level 4
self.assertIsNone(
json_lib.GetNestedDictValue(NESTED_DICT,
['lv1.1', 'lv2.1', 'value', '1.1']))