public static async Task GetMetricsSample(HttpContext context, TimeSpan timeout, MetricType typeFilter)
{
var registry = context.RequestServices.GetRequiredService <IMetricsRegistry>();
var samples = registry.SelectMany(x => x.GetSample(typeFilter)).ToImmutableDictionary();
var cancel = new CancellationTokenSource(timeout);
context.Response.StatusCode = 200;
context.Response.Headers.Add(HeaderNames.ContentType, MediaTypeNames.Application.Json);
await context.Response.WriteAsync(JsonSampleSerializer.Serialize(samples), cancel.Token);
}
public async Task <IActionResult> GetAsync()
{
var timeout = TimeSpan.FromSeconds(_options.Value.SampleTimeoutSeconds);
var cancel = new CancellationTokenSource(timeout);
var samples = await Task.Run(() => _registry.SelectMany(x => x.GetSample()).ToImmutableDictionary(), cancel.Token);
var json = JsonSampleSerializer.Serialize(samples);
return(Ok(json));
}
public async Task Invoke(HttpContext context)
{
if (context.Request.Path == _middlewareOptions.Value.Path)
{
var registry = context.RequestServices.GetRequiredService <IMetricsRegistry>();
var samples = registry.SelectMany(x => x.GetSample(_options.Value.Filter)).ToImmutableDictionary();
var cancel = new CancellationTokenSource(_middlewareOptions.Value.Timeout);
context.Response.StatusCode = 200;
context.Response.Headers.Add(Constants.HttpHeaders.ContentType, Constants.MediaTypes.Json);
await context.Response.WriteAsync(JsonSampleSerializer.Serialize(samples), cancel.Token);
}
else
{
await _next.Invoke(context);
}
}
