| // Copyright 2014 The Flutter 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 'dart:collection'; |
| import 'dart:convert'; |
| |
| import 'package:crypto/crypto.dart'; |
| import 'package:equatable/equatable.dart'; |
| |
| /// Common format of a metric data point. |
| class MetricPoint extends Equatable { |
| MetricPoint( |
| this.value, |
| Map<String, String> tags, |
| ) : _tags = SplayTreeMap<String, String>.from(tags); |
| |
| /// Can store integer values. |
| final double value; |
| |
| /// Test name, unit, timestamp, configs, git revision, ..., in sorted order. |
| UnmodifiableMapView<String, String> get tags => |
| UnmodifiableMapView<String, String>(_tags); |
| |
| /// Unique identifier for updating existing data point. |
| /// |
| /// We shouldn't have to worry about hash collisions until we have about |
| /// 2^128 points. |
| /// |
| /// This id should stay constant even if the [tags.keys] are reordered. |
| /// (Because we are using an ordered SplayTreeMap to generate the id.) |
| String get id => sha256.convert(utf8.encode('$_tags')).toString(); |
| |
| @override |
| String toString() { |
| return 'MetricPoint(value=$value, tags=$_tags)'; |
| } |
| |
| final SplayTreeMap<String, String> _tags; |
| |
| @override |
| List<Object> get props => <Object>[value, tags]; |
| } |
| |
| /// Some common tag keys |
| const String kGithubRepoKey = 'gitRepo'; |
| const String kGitRevisionKey = 'gitRevision'; |
| const String kUnitKey = 'unit'; |
| const String kNameKey = 'name'; |
| const String kSubResultKey = 'subResult'; |
| |
| /// Known github repo |
| const String kFlutterFrameworkRepo = 'flutter/flutter'; |
| const String kFlutterEngineRepo = 'flutter/engine'; |