private static async Task ExecuteRequest(string url, RequestTracker requestTracker)
{
var requestStarted = DateTime.Now;
await _httpClient.GetAsync(url);
requestTracker.CompleteRequest(DateTime.Now - requestStarted);
}
private static async Task <int> Run(Options options)
{
var requestTracker = new RequestTracker();
await Task.WhenAll(
PrintResults(requestTracker),
ExecuteRequests(options.Url, options.RequestsPerSecond, requestTracker));
return(0);
}
private static async Task PrintResults(RequestTracker requestTracker)
{
var last = DateTime.MinValue;
while (true)
{
var now = DateTime.Now;
var(requestsStarted, requestsCompleted, averageLatency,
recentRequestsStarted, recentRequestsCompleted, recentAverageLatency) = requestTracker.GetSummary(last, now);
Console.WriteLine($"Total: {requestsStarted}/{requestsCompleted}/{Math.Round(averageLatency.TotalMilliseconds)}" +
$", Recent: {recentRequestsStarted}/{recentRequestsCompleted}/{Math.Round(recentAverageLatency.TotalMilliseconds)}");
last = now;
await Task.Delay(TimeSpan.FromSeconds(1));
}
}
private static async Task ExecuteRequests(string url, int requestsPerSecond, RequestTracker requestTracker)
{
var start = DateTime.Now;
while (true)
{
var now = DateTime.Now;
var elapsed = now - start;
var expectedRequestsStarted = requestsPerSecond * elapsed.TotalSeconds;
var requestsStarted = requestTracker.RequestsStarted;
if (requestsStarted < expectedRequestsStarted)
{
requestTracker.RequestStarted();
ExecuteRequest(url, requestTracker);
}
else
{
await Task.Delay(TimeSpan.FromSeconds(1 / requestsPerSecond));
}
}
}