| # Copyright 2014 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. |
| |
| import json |
| |
| from telemetry.internal.results import output_formatter |
| |
| |
| def ResultsAsDict(page_test_results, benchmark_metadata): |
| """Takes PageTestResults to a dict serializable to JSON. |
| |
| To serialize results as JSON we first convert them to a dict that can be |
| serialized by the json module. It also requires a benchmark_metadat object |
| for metadata to be integrated into the results (currently the benchmark |
| name). This function will also output trace files if they exist. |
| |
| Args: |
| page_test_results: a PageTestResults object |
| benchmark_metadata: a benchmark.BenchmarkMetadata object |
| """ |
| result_dict = { |
| 'format_version': '0.2', |
| 'next_version': '0.3', |
| # TODO(sullivan): benchmark_name should be removed when updating |
| # format_version to 0.3. |
| 'benchmark_name': benchmark_metadata.name, |
| 'benchmark_metadata': benchmark_metadata.AsDict(), |
| 'summary_values': [v.AsDict() for v in |
| page_test_results.all_summary_values], |
| 'per_page_values': [v.AsDict() for v in |
| page_test_results.all_page_specific_values], |
| 'pages': {p.id: p.AsDict() for p in _GetAllPages(page_test_results)} |
| } |
| if page_test_results.serialized_trace_file_ids_to_paths: |
| result_dict['files'] = page_test_results.serialized_trace_file_ids_to_paths |
| return result_dict |
| |
| |
| def _GetAllPages(page_test_results): |
| pages = set(page_run.story for page_run in |
| page_test_results.all_page_runs) |
| return pages |
| |
| |
| class JsonOutputFormatter(output_formatter.OutputFormatter): |
| def __init__(self, output_stream, benchmark_metadata): |
| super(JsonOutputFormatter, self).__init__(output_stream) |
| self._benchmark_metadata = benchmark_metadata |
| |
| @property |
| def benchmark_metadata(self): |
| return self._benchmark_metadata |
| |
| def Format(self, page_test_results): |
| json.dump( |
| ResultsAsDict(page_test_results, self.benchmark_metadata), |
| self.output_stream, indent=2) |
| self.output_stream.write('\n') |
