/// <summary>
/// Initializes a new instance of the <see cref="RequestsCollector"/> class.
/// </summary>
/// <param name="options">Configuration options for dependencies collector.</param>
/// <param name="tracer">Tracer to record traced with.</param>
/// <param name="sampler">Sampler to use to sample dependency calls.</param>
/// <param name="propagationComponent">Wire context propagation component.</param>
public RequestsCollector(RequestsCollectorOptions options, ITracer tracer, ISampler sampler, IPropagationComponent propagationComponent)
{
this.diagnosticSourceSubscriber = new DiagnosticSourceSubscriber(
new Dictionary <string, Func <ITracer, Func <HttpRequest, ISampler>, ListenerHandler> >()
{
{ "Microsoft.AspNetCore", (t, s) => new HttpInListener(t, s, propagationComponent) },
},
tracer,
x =>
{
ISampler s = null;
try
{
s = options.CustomSampler(x);
}
catch (Exception e)
{
s = null;
AspNetCoreCollectorEventSource.Log.ExceptionInCustomSampler(e);
}
return(s == null ? sampler : s);
});
this.diagnosticSourceSubscriber.Subscribe();
}
/// <summary>
/// Initializes a new instance of the <see cref="RequestsCollector"/> class.
/// </summary>
/// <param name="options">Configuration options for dependencies collector.</param>
/// <param name="tracerFactory">TracerFactory which creates the Tracer to record traced with.</param>
/// <param name="sampler">Sampler to use to sample dependency calls.</param>
public RequestsCollector(RequestsCollectorOptions options, ITracerFactory tracerFactory, ISampler sampler)
{
const string name = "Microsoft.AspNetCore";
this.diagnosticSourceSubscriber = new DiagnosticSourceSubscriber <HttpRequest>(
new Dictionary <string, Func <ITracerFactory, Func <HttpRequest, ISampler>, ListenerHandler <HttpRequest> > >()
{
{
name, (t, s) =>
{
var version = typeof(RequestDelegate).Assembly.GetName().Version;
var tracer = tracerFactory.GetTracer(typeof(RequestsCollector).Namespace, "semver:" + version.ToString());
return(new HttpInListener(name, tracer, s));
}
},
},
tracerFactory,
x =>
{
ISampler s = null;
try
{
s = options.CustomSampler(x);
}
catch (Exception e)
{
s = null;
CollectorEventSource.Log.ExceptionInCustomSampler(e);
}
return(s ?? sampler);
});
this.diagnosticSourceSubscriber.Subscribe();
}