我可以在Asp.net Web.API中的AppStart一次自定义RequestTelemetry属性吗？

Question

I want to add a property say version information to RequestTelemetry of (HttpRequest). This link provides an approach - by overriding ITelemetryInitializer Initialize method. However, it is getting executed every time when a request hits the server. I want to set it once at App Start as my property( eg., assembly ver/Proj version) does not change often.

Answer 1

我不确定您可以执行此操作，因为每个请求都会获得一个RequestTelemetry的新实例。

Answer 2

This is not possible. TelemetryInitializer override, is a way to collect telemetry in a custom fashion and is called with every request.

Answer 3

I got to know of a way to do this through context initializers but it is not recommended - http://apmtips.com/blog/2015/06/09/do-not-use-context-initializers/

Instead he asked to use ITelemetryInitializers with a static value so that it is not calculated for every request.