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Correlation information is not being sent #1019

freerangeeggs opened this issue Aug 28, 2019 · 2 comments · Fixed by #1021


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commented Aug 28, 2019

I have an angular app calling a backend API, both log telemetry to their own instances of AI. I am attempting to have distributed tracing work across both. I am using AI-web 2.2.0 and AI-dotnet 2.10.0

This is what I see on the Front-end AI:

This is what I see when looking at AI for the API:

I expect to have the latter result in both AI instances.

As they are on different domains, I have enableCorsCorrelation set to true.

I can see the Request-Id and Request-Context are correctly being sent to my API, and my API returning Request-Context with an AppId and the API has exposed the Request-Context so the header can be read by xhr.getAllResponseHeaders()

When stepping through the code, I can see dependency.correlationContext is being set to the appId rather than being appended with the appId.

When looking at the network traffic, correlationContext is not being sent to AI. I can see that the correlationContext is not being serialized on creation of the dependency envelope.

If I use fiddler to manually adjust the traffic:

  • Adding correlationContext to baseData has no effect.
  • Adjusting target to append | cid-v1:{APP_ID} DOES have the desired effect, and I can see the same telemetry in the front-end AI as I do in the AI of the API.

I have attempted to use a Telemetry Initializer to adjust the target so it includes the AppId, but it is overwritten before it is posted.

Where I notice that dependency.correlationContext is being set in favor of appending, I see that this is a change as part of the vNext folder, should this be part of the current deployment?


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commented Aug 29, 2019

Thanks for the report. It seems this bit was commented out for some reason or another. I'll enable it for the next release


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commented Aug 31, 2019

Awesome, thank you!

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