Transform exception.message for custom exception types

[lvde0]

What is the question?

Is there any reasonable way of transforming the exception.message of an exception record? I have this ProblemDetails (RFC 7807) exception that carries its information inside the Detail property and not the Message. Would be nice if I could send that to the OTLP endpoint.

Additional context

No response

[cijothomas]

Is that for Activity or LogRecord?

[lvde0]

@cijothomas For LogRecord

[cijothomas]

The raw Exception object is stored in LogRecord, so you can write a LogRecordProcessor that can read the Exception, get the additional details from it, and store it as attributes on LogRecord.
(Its not super straightforward, https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/src/OpenTelemetry/Logs/LogRecord.cs maybe used as a starting example to make extra attributes)

This is a doc gap as well. If you are not able to get it working, let us know.