HttpContext and TelemetryInitializer

Question

I want to attach the user\'s \"client_id\" claim as a property to every request sent to Application Insights.

From what I\'ve read, I should be implementing IT

Answer 1

You should implement the WebTelemetryInitializerBase which provides you the HttpContext.

Your code should look like:

public class ClaimTelemetryInitializer : WebTelemetryInitializerBase
{
    protected override void OnInitializeTelemetry(
            HttpContext platformContext,
            RequestTelemetry rootRequestTelemetry, 
            ITelemetry telemetry) {

            var claim = HttpContext.User.Claims.SingleOrDefault(x => x.Type.Equals(claimName, StringComparison.InvariantCultureIgnoreCase));

            if (claim != null)
            {
                telemetry.Context.Properties[claimName] = claim.Value;
            }
    }
}