static async Task Main(string[] args)
{
const string TestClient = "TestClient";
IServiceCollection services = new ServiceCollection();
services.AddHttpClient(TestClient)
.AddPolicyHandler(AsyncTimingPolicy <HttpResponseMessage> .Create(PublishTiming));
HttpClient configuredClient =
services
.BuildServiceProvider()
.GetRequiredService <IHttpClientFactory>()
.CreateClient(TestClient);
string[] urls =
{
"https://www.google.com/",
"https://www.google.co.uk/",
"https://www.bbc.co.uk/"
};
foreach (var url in urls)
{
var context = new Context {
["url"] = url
};
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, url);
request.SetPolicyExecutionContext(context);
var result = await configuredClient.SendAsync(request, default(CancellationToken));
}
Console.ReadKey();
}
public async Task PolicyCapturesTimingOfExecutedDelegate()
{
TimeSpan elapsed = TimeSpan.MinValue;
Func <TimeSpan, Context, Task> capturedElapsed = (t, _) =>
{
elapsed = t;
return(Task.CompletedTask);
};
AsyncTimingPolicy policy = AsyncTimingPolicy.Create(capturedElapsed);
TimeSpan forcedDelay = TimeSpan.FromSeconds(1);
await policy.ExecuteAsync(() => Task.Delay(forcedDelay));
elapsed.Should().BeCloseTo(forcedDelay);
}
