Flutter数据追踪与HTTP客户端插件datadog_tracking_http_client的使用
Flutter数据追踪与HTTP客户端插件datadog_tracking_http_client的使用
简介
Datadog Tracking HTTP Client Plugin
是一个用于与Datadog SDK一起使用的插件,主要用于跟踪HTTP调用的性能并启用Datadog分布式追踪。
开始使用
要使用此插件,需要在配置SDK时启用它。为了启用Datadog分布式追踪,还需要在配置对象中设置 firstPartyHosts
属性。
import 'package:datadog_tracking_http_client/datadog_tracking_http_client.dart';
final configuration = DatadogConfiguration(
// 其他配置项
firstPartyHosts: ['example.com'],
)..enableHttpTracking();
注意,Datadog Tracking HTTP Client 修改了 [HttpOverrides.global]()
。如果需要提供自己的 HttpOverrides
,请确保在初始化Datadog之前进行初始化。在初始化过程中,Datadog会检查 HttpOverrides.current
的值,并在存在时使用它来创建客户端。
使用http.Client包装
此包还提供了一个可组合的客户端 DatadogClient
,可用于 http
包。对于大多数场景,Datadog建议使用上述HTTP跟踪方法,但在某些情况下,使用 DatadogClient
可能更有意义:
- 如果你使用的是原生HTTP库(如
cronet_http
或cupertino_http
),这些库不支持上述跟踪方法。 - 如果你只想跟踪特定的资源请求。
如果你使用 cronet_http
或 cupertino_http
,可以将 DatadogClient
与上述跟踪方法结合使用。否则,这两种方法可能会相互干扰。
要使用 DatadogClient
,可以从 http
包中创建并组合 Client
:
import 'package:datadog_tracking_http_client/datadog_tracking_http_client.dart';
import 'package:http/http.dart' as http;
final configuration = DatadogConfiguration(
// 需要指定 firstPartyHosts 以启用分布式追踪
firstPartyHosts: ['example.com'],
);
final httpClient = http.Client();
final datadogClient = DatadogClient(datadogSdk: DatadogSdk.instance, innerClient: httpClient);
innerClient
参数是可选的。如果不提供,DatadogClient
将为你创建一个具有默认选项的 Client
。
Flutter 2.8 支持
Flutter 3.0 更新到 Dart 2.17,这增加了两个 HttpClient
方法。
目前,version 1.1.x
设置了 Dart >= 2.17 的版本约束。如果你需要支持 Flutter 3.0 之前的版本(例如 Flutter 2.8),请使用 version 1.0.x
。这两个版本之间的唯一区别是支持较低版本的 Dart。
贡献
欢迎提交拉取请求。首先,请打开一个议题讨论你希望更改的内容。更多信息,请阅读根仓库中的 贡献指南。
许可证
示例代码
以下是一个完整的示例代码,展示了如何在Flutter应用中使用 datadog_tracking_http_client
插件。
main.dart
// Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016-Present Datadog, Inc.
import 'dart:io';
import 'package:datadog_common_test/datadog_common_test.dart';
import 'package:datadog_flutter_plugin/datadog_flutter_plugin.dart';
import 'package:datadog_tracking_http_client/datadog_tracking_http_client.dart';
import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'scenario_config.dart';
import 'scenario_select_screen.dart';
// This file sets up a different application for testing auto instrumentation
// Using the widgets in this library by themselves won't send any RUM events
// but, by utilizing this entry point instead, we can test that
// auto-instrumentation added to an existing app gives us the expected results.
TestingConfiguration? testingConfiguration;
Future<void> main() async {
await dotenv.load(mergeWith: Platform.environment);
var clientToken = dotenv.get('DD_CLIENT_TOKEN', fallback: '');
var applicationId = dotenv.maybeGet('DD_APPLICATION_ID');
String? customEndpoint = dotenv.maybeGet('DD_CUSTOM_ENDPOINT');
if (testingConfiguration != null) {
if (testingConfiguration!.customEndpoint != null) {
customEndpoint = testingConfiguration!.customEndpoint;
}
if (testingConfiguration!.clientToken != null) {
clientToken = testingConfiguration!.clientToken!;
}
if (testingConfiguration!.applicationId != null) {
applicationId = testingConfiguration!.applicationId;
}
}
final firstPartyHosts = ['datadoghq.com'];
if (testingConfiguration != null) {
firstPartyHosts.addAll(testingConfiguration!.firstPartyHosts);
}
DatadogSdk.instance.sdkVerbosity = CoreLoggerLevel.debug;
final configuration = DatadogConfiguration(
clientToken: clientToken,
env: dotenv.get('DD_ENV', fallback: ''),
site: DatadogSite.us1,
uploadFrequency: UploadFrequency.frequent,
batchSize: BatchSize.small,
nativeCrashReportEnabled: true,
firstPartyHosts: firstPartyHosts,
loggingConfiguration: DatadogLoggingConfiguration(
customEndpoint: customEndpoint,
),
rumConfiguration: applicationId != null
? DatadogRumConfiguration(
detectLongTasks: false,
applicationId: applicationId,
traceSampleRate: 100,
customEndpoint: customEndpoint,
)
: null,
);
if (testingConfiguration != null) {
// Add clear text if we're running an actual test.
configuration.additionalConfig['_dd.needsClearTextHttp'] = true;
}
if (RumAutoInstrumentationScenarioConfig.instance.enableIoHttpTracking) {
configuration.enableHttpTracking();
}
await DatadogSdk.runApp(configuration, TrackingConsent.granted, () async {
runApp(const DatadogAutoIntegrationTestApp());
});
}
class DatadogAutoIntegrationTestApp extends StatelessWidget {
const DatadogAutoIntegrationTestApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
final navObserver =
DatadogNavigationObserver(datadogSdk: DatadogSdk.instance);
return DatadogNavigationObserverProvider(
navObserver: navObserver,
child: MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
navigatorObservers: [
navObserver,
],
home: const ScenarioSelectScreen()),
);
}
}
scenario_config.dart
class TestingConfiguration {
final String? clientToken;
final String? applicationId;
final String? customEndpoint;
final List<String> firstPartyHosts;
TestingConfiguration({
this.clientToken,
this.applicationId,
this.customEndpoint,
this.firstPartyHosts = const [],
});
}
scenario_select_screen.dart
import 'package:flutter/material.dart';
class ScenarioSelectScreen extends StatelessWidget {
const ScenarioSelectScreen({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Scenario Select'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
onPressed: () {
// Navigate to a specific scenario
},
child: Text('Scenario 1'),
),
ElevatedButton(
onPressed: () {
// Navigate to another specific scenario
},
child: Text('Scenario 2'),
),
],
),
),
);
}
}
通过以上代码,你可以看到如何在Flutter应用中集成 datadog_tracking_http_client
插件,以实现HTTP调用的性能跟踪和分布式追踪。希望这些信息对你有所帮助!
更多关于Flutter数据追踪与HTTP客户端插件datadog_tracking_http_client的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter数据追踪与HTTP客户端插件datadog_tracking_http_client的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,以下是如何在Flutter项目中集成并使用datadog_tracking_http_client
插件进行数据追踪与HTTP请求的一个示例。
1. 添加依赖
首先,在你的pubspec.yaml
文件中添加datadog_tracking_http_client
依赖:
dependencies:
flutter:
sdk: flutter
datadog_flutter_plugin: ^x.y.z # 确保使用最新版本
datadog_tracking_http_client: ^x.y.z # 确保使用最新版本
替换^x.y.z
为实际的最新版本号。
2. 初始化DataDog
在你的应用入口文件(通常是main.dart
)中初始化DataDog插件:
import 'package:flutter/material.dart';
import 'package:datadog_flutter_plugin/datadog_flutter_plugin.dart';
import 'package:datadog_tracking_http_client/datadog_tracking_http_client.dart';
void main() {
// 初始化DataDog
DatadogFlutterPlugin.initialize(
androidConfig: DatadogConfig(
clientToken: 'YOUR_CLIENT_TOKEN', // 替换为你的DataDog客户端令牌
environment: 'production', // 设置环境,例如:production, staging, development
serviceName: 'your_service_name', // 设置服务名称
// 其他可选配置
),
iosConfig: DatadogConfig(
clientToken: 'YOUR_CLIENT_TOKEN', // 替换为你的DataDog客户端令牌
environment: 'production', // 设置环境
serviceName: 'your_service_name', // 设置服务名称
// 其他可选配置
),
);
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('DataDog Tracking Example'),
),
body: Center(
child: MyHomePage(),
),
),
);
}
}
3. 使用DataDog HTTP客户端
在你的应用中,使用DatadogTrackingHttpClient
来替代标准的HttpClient
进行HTTP请求,并自动追踪这些请求。
import 'dart:async';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:datadog_tracking_http_client/datadog_tracking_http_client.dart';
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String responseData = '';
void fetchData() async {
var client = DatadogTrackingHttpClient.create();
var url = Uri.parse('https://jsonplaceholder.typicode.com/posts/1');
var request = HttpRequest.newBuilder()
..uri = url
..method = 'GET'
..build();
var response = await client.send(request);
response.body.pipe(new StreamControllers.text().sink)
.then((value) {
setState(() {
responseData = value;
});
});
}
@override
Widget build(BuildContext context) {
return Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text('Fetch Data from API using DataDog Tracking HTTP Client'),
ElevatedButton(
onPressed: fetchData,
child: Text('Fetch Data'),
),
if (responseData.isNotEmpty)
Text('Response Data:\n$responseData')
],
);
}
}
4. 运行应用
确保你已经替换了YOUR_CLIENT_TOKEN
为你的实际DataDog客户端令牌,然后运行你的Flutter应用。你应该能够看到你的HTTP请求被DataDog自动追踪,并且可以在DataDog的仪表板上查看这些请求的数据。
注意事项
- 确保你的DataDog账户已经配置好,并且你有权限查看和配置DataDog追踪。
- 替换示例中的URL和请求方法为实际的API端点和请求类型。
- 在生产环境中使用时,请确保遵循DataDog的最佳实践和隐私政策。
这个示例展示了如何在Flutter应用中使用datadog_tracking_http_client
插件进行HTTP请求和数据追踪。如果你有更复杂的需求,可以参考DataDog的官方文档进行进一步的配置和自定义。