# Copyright 2024 The Chromium Authors # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. """ The module to create and manage measures using in the process. """
import json import os import sys
from google.protobuf import any_pb2 from google.protobuf.json_format import MessageToDict
# Add to sys.path so that this module can be imported by other modules that # have different path setup, e.g. android test runner, and ios test runner.
sys.path.append(os.path.abspath(os.path.dirname(__file__))) from average import Average from count import Count from data_points import DataPoints from measure import Measure from metric import Metric from time_consumption import TimeConsumption
# This is used as the key when being uploaded to ResultDB via result_sink # and shouldn't be changed
TEST_SCRIPT_METRICS_KEY = 'test_script_metrics'
# The file name is used as the key when being loaded into the ResultDB and # shouldn't be changed.
TEST_SCRIPT_METRICS_JSONPB_FILENAME = f'{TEST_SCRIPT_METRICS_KEY}.jsonpb'
_metric = Metric()
def _create_name(*name_pieces: str) -> str: if len(name_pieces) == 0: raise ValueError('Need at least one name piece.') return'/'.join(list(name_pieces))
def _register(m: Measure) -> Measure:
_metric.register(m) return m
def tag(*args: str) -> None: """Adds a tag to the Metric to tag the final results; see Metric for details. """
_metric.tag(*args)
def clear() -> None: """Clears all the registered Measures."""
_metric.clear()
def size() -> int: """Gets the current size of registered Measures.""" return _metric.size()
def to_dict() -> dict: """Converts all the registered Measures to a dict.
The records are wrapped in protobuf Any message before exported as dict
so that an additional key "@type"is included. """
any_msg = any_pb2.Any()
any_msg.Pack(_metric.dump()) return MessageToDict(any_msg, preserving_proto_field_name=True)
def to_json() -> str: """Converts all the registered Measures to a json str.""" return json.dumps(to_dict(), sort_keys=True, indent=2)
# TODO(crbug.com/343242386): May need to implement a lock and reset logic to # clear in-memory data and lock the instance to block further operations and # avoid accidentally accumulating data which won't be published at all. def dump(dir_path: str) -> None: """Dumps the metric data into test_script_metrics.jsonpb in the |path|."""
os.makedirs(dir_path, exist_ok=True) with open(os.path.join(dir_path, TEST_SCRIPT_METRICS_JSONPB_FILENAME), 'w',
encoding='utf-8') as wf:
wf.write(to_json())
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