| <!DOCTYPE html> |
| <!-- |
| 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. |
| --> |
| |
| <link rel="import" href="/tracing/value/histogram.html"> |
| <link rel="import" href="/tracing/value/legacy_unit_info.html"> |
| |
| <script> |
| 'use strict'; |
| tr.exportTo('tr.v', function() { |
| class ChartJsonConverter { |
| /** |
| * Parses Values from |charts|, converts them to Histograms, and adds those |
| * to |histograms|. |
| * |
| * @param {!Array.<!Object>} charts |
| * @param {!tr.v.HistogramSet} histograms |
| */ |
| static convertChartJson(charts, histograms) { |
| for (const [name, pageValues] of Object.entries(charts.charts)) { |
| if (name === 'trace') continue; |
| |
| const pageValuesCount = Object.keys(pageValues).length; |
| for (const [storyName, value] of Object.entries(pageValues)) { |
| if (pageValuesCount > 1 && storyName === 'summary') continue; |
| |
| const unitInfo = tr.v.LEGACY_UNIT_INFO.get(value.units) || {}; |
| const unitName = unitInfo.name || 'unitlessNumber'; |
| const conversionFactor = unitInfo.conversionFactor || 1; |
| |
| let improvementDirection = tr.b.ImprovementDirection.DONT_CARE; |
| if (unitInfo.defaultImprovementDirection !== undefined) { |
| improvementDirection = unitInfo.defaultImprovementDirection; |
| } |
| // Metrics have the final say. |
| if (value.improvement_direction !== undefined) { |
| improvementDirection = |
| ChartJsonConverter.convertImprovementDirection( |
| value.improvement_direction); |
| } |
| const unitNameSuffix = tr.b.Unit.nameSuffixForImprovementDirection( |
| improvementDirection); |
| |
| const hist = new tr.v.Histogram( |
| value.name, |
| tr.b.Unit.byName[unitName + unitNameSuffix], |
| tr.v.HistogramBinBoundaries.SINGULAR); |
| hist.description = value.description || ''; |
| histograms.addHistogram(hist); |
| |
| new tr.v.d.TelemetryInfo({ |
| storyDisplayName: pageValuesCount > 1 ? storyName : '', |
| legacyTIRLabel: value.tir_label, |
| benchmarkName: charts.benchmark_name, |
| label: charts.label, |
| benchmarkStartMs: charts.benchmarkStartMs, |
| }).addToHistogram(hist); |
| |
| if (value.type === 'histogram') { |
| for (const bucket of value.buckets) { |
| // Take the center of the bin. This coarse granularity can amplify |
| // noise when a measurement moves from one bin to the next. |
| const sample = conversionFactor * (bucket.high + bucket.low) / 2; |
| for (let i = 0; i < bucket.count; ++i) { |
| hist.addSample(sample); |
| } |
| } |
| } else if (value.type === 'list_of_scalar_values') { |
| // |value.values| is undefined if the list_of_scalar_values is |
| // empty. |
| if (value.values) { |
| for (const sample of value.values) { |
| hist.addSample(sample * conversionFactor); |
| } |
| } |
| } else if (value.type === 'scalar') { |
| hist.addSample(value.value * conversionFactor); |
| } |
| } |
| } |
| } |
| |
| static convertImprovementDirection(improvementDirection) { |
| switch (improvementDirection) { |
| case 'down': return tr.b.ImprovementDirection.SMALLER_IS_BETTER; |
| case 'up': return tr.b.ImprovementDirection.BIGGER_IS_BETTER; |
| default: return tr.b.ImprovementDirection.DONT_CARE; |
| } |
| } |
| } |
| |
| return { |
| ChartJsonConverter, |
| }; |
| }); |
| </script> |
