Opentelemetry java auto-instrumentation session tracing

[NamitaJaokar]

Hi,

I am using opentelemetry javaagent jar version 10 and currently trying to implement session tracing using opentelemetry with zipkin as exporter.
Is there any configurations available to trace or export the users authenticated in the application ?
Also, I have tried few configuration properties at my end to uniquely define the users if at all I am able to capture hostname/IP address of the users using the agent.
-Dotel.metrics.exporter : This property , gives me the hostname of the machine and and other OS and process level when the value is set to logging. But the same fails when tried with zipkin as the metrics exporter. Is metrics export option available only with logging and not Zipkin exporter?

Apart from the above points , I also wanted to understand below configuration properties. I had tried setting these properties in my application but there were no changes/additions in the kind of attributes/traces captured before and after setting them
-Dotel.instrumentation.http.capture-headers.client.request
-Dotel.instrumentation.http.capture-headers.client.response
-Dotel.instrumentation.http.capture-headers.server.request
-Dotel.instrumentation.http.capture-headers.server.response
-Dotel.instrumentation.common.peer-service-mapping
For all of the above properties overridden , I had set the value as true for them.

Can someone please advise/ help me on the above queries.

Thanks in advance

[trask]

hi @NamitaJaokar!

But the same fails when tried with zipkin as the metrics exporter

Zipkin is not a metrics backend, you may want to look at prometheus if you are looking for an OSS metrics backend.

For all of the above properties overridden , I had set the value as true for them.

these properties are not boolean valued, check out https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/v1.10.0/docs/config/common.md

[NamitaJaokar]

Hi @trask ,

Is there any example of the above that I can refer to. Also, are there any configurations available in Opentelemetry to add custom attributes? If yes , Can you give some suggestions /advise to configure the same.

Thanks in advance.

[trask]

can you describe in detail what you want to capture? that will help us point you in the right direction

[NamitaJaokar]

I am looking out for 2 things

1. Capture http header attributes like authorization details.
2. Some Custom attributes in the traces or data collected and exported to the exporter ( in my case its zipkin exporter ). For example application.users=some user or list of users.

[NamitaJaokar]

@trask

Can you help me with understanding and configuring below attributes

I came across these while going through below link:
https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/span-general.md

Thank you

[trask]

hi @NamitaJaokar, there's no auto-instrumentation for enduser.* attributes, so you would need to capture those manually, e.g.

Span.current().setAttribute("enduser.id", "myuser")

[mvkrishna86]

Hi @trask , Is it possible to capture the headers (without any processing) with the auto-instrumentation?
Like OTEL_PYTHON_DJANGO_TRACED_REQUEST_ATTRS for Django, do we have any option for Java?

[trask]

Is this what you're looking for? https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/docs/config/common.md#capturing-http-request-and-response-headers

[mvkrishna86]

Thanks @trask . This is exactly what I am looking for.