/// <summary>
/// Adds <c>ETW</c> in-process telemetry session services to the service collection.
/// </summary>
/// <param name="services">A <see cref="IServiceCollection"/> instance.</param>
/// <param name="configuration">A <see cref="IConfiguration"/> instance.</param>
/// <returns>The provided <see cref="IServiceCollection"/> instance.</returns>
public static IServiceCollection AddInProcessTelemetrySession(
this IServiceCollection services,
IConfiguration configuration)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (configuration == null)
{
throw new ArgumentNullException(nameof(configuration));
}
return(services
.AddTracingCore(configuration)
.Configure <SessionConfiguration>(configuration.GetSection("Tracing"))
.AddSingleton <IProvidersDescriptor, SessionConfigurationProvidersDescriptor>()
.AddSingleton(p =>
{
SessionConfiguration config = p
.GetRequiredService <IOptions <SessionConfiguration> >()?.Value;
IEnumerable <ITelemetryEventTransmitter> eventTransmitters =
p.GetServices <ITelemetryEventTransmitter>();
ITelemetrySession session = InProcessTelemetrySession
.Create(config, p.GetServices <IProvidersDescriptor>());
foreach (ITelemetryEventTransmitter transmitter in eventTransmitters)
{
session.Attach(transmitter);
}
return session;
}));
}
/// <summary>
/// Creates a new instance of <see cref="InProcessTelemetrySession"/>.
/// </summary>
/// <param name="applicationId">An unique application id.</param>
/// <param name="level">A level of severity.</param>
/// <param name="providersDescriptors">
/// A collection of provider descriptors.
/// </param>
/// <returns>
/// A new instance of <see cref="InProcessTelemetrySession"/>.
/// </returns>
public static InProcessTelemetrySession Create(int applicationId,
EventLevel level, IEnumerable <IProvidersDescriptor> providersDescriptors)
{
InProcessTelemetrySession session = new InProcessTelemetrySession(
applicationId, level, providersDescriptors);
session.FindAndActivateProviders();
session.RegisterAssemblyLoadCallback();
return(session);
}
