oTel Integration

[mjallday]

What's the best way to add traces to kopf framework level log data?

I've tried annotating the kopf framework using the otel @tracer.start_as_current_span annotation but it complains about non-compliant objects being passed in by the kopf framework. I'm sure this is not that difficult to solve but has anyone got a working example?

[2025-08-19 17:18:13,923] opentelemetry.attrib [WARNING ] Attribute settings: Invalid type OperatorSettings for attribute value. Expected one of ['NoneType', 'bool', 'bytes', 'int', 'float', 'str', 'Sequence', 'Mapping'] or a sequence of those types

2025-08-19 17:18:13,924 INFO [kopf.objects] [execution.py:330] [trace_id=0 span_id=0 resource.service.name=kopf trace_sampled=False] - Timer 'results' succeeded.

Any hints welcome!

[nolar]

My guess: these objects must be json-serializable by that tracing library. So, either find a way to skip this argument (and a few other arguments of custom classes), or maybe this tracing library has a way to register third-party self-made serializers and/or filters for arbitrary objects. Not much can be done from Kopf’s side anyway.