Azure Open Telemetry - ActivityListener is null after first time

[tinuverma]

I am trying Azure open telemetry and notice a weird behavior. First time all works well and data gets sent to telemetry. But any subsequent calls the ActivityListener is null and hence no data is sent. Can you please tell me what am I missing?

I have put all details in stackoverflow question here. Ignore title since I was still learning when I first put it there.
https://stackoverflow.com/questions/75817875/azure-open-telemetry-activity-is-null-few-min-after-app-start

Thanks
D

[tinuverma]

@tarekgh any suggestions? You helped ma-gu with this question #45070 ...so found your reference from there. Not sure how to tag ma-gu

[tarekgh]

@tinuverma

You mentioned the following

I can confirm that the handleMessageActivity object is null and the activitySource still looks to be a valid object. Same problem happens on both activitySource?.CreateActivity and activitySource?.StartActivity I cannot understand why activitySource is valid object when the object is first deployed and then becomes null.

I am confused as you are saying the activitySource still looks to be a valid object and at the end of text you are saying I cannot understand why activitySource is valid object when the object is first deployed and then becomes null.
Does the activitySource is valid and not null when the problem occurs or not?

If it is valid, can you try to call activitySource.HasListeners() and find out what it will return. My suspicion here is the activitySource is disposed.

C @noahfalk

[tarekgh]

Why do you pass the links too? if we are setting the parent context correctly, you don't need to pass the link, right? can you try to remove it and look if this make any difference?

[tinuverma]

didnt make any difference

[tarekgh]

I see Message enters --> handleMessageActivity and Message enters --> processPartyActivity

Where do you see these messages? is it through OpenTelemetry or something else?

[tinuverma]

sent screen shot in email to you. if not inbox, please look at spam folder.

[tarekgh]

Yes, I got the email.

Can you add console exporter and send its output too? you may look at https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/docs/trace/getting-started-console/README.md for how to do it.

[tarekgh]

@tinuverma please log issue in https://github.com/Azure/azure-sdk-for-net/issues and they should be able to help you with the Azure monitor. From your code now, the activity relationship is set correctly.