v0.3.x doesn't emit log messages as span events

[beaknit]

If you look in Prometheus or LightStep, there won't be any log messages in the spans.

Looks like this is the reason. There's no AddEvent call on the span anymore. (Red is 0.2.4 - works great, Green is 0.3.2 no events tied to spans)

Is that on purpose? I thought the purpose of this library was to be the bridge between zap logger and otel.

[steve-hb]

To add more context: The commit changing the code is 3f68ff6#diff-5f4b1324acf45f0bb1104da26e1be9df15133b976698919938c8fae5688a6323 , which seems migrate from the now deprecated, but previously recommended, method of adding logs as span events to use the current opentelemetry (otel) logs signal. This removes the capability of different tools, which rely on spans to contain span events for your logs, to process the logs by searching inside span events (because it's now a different signal and therefore message sent).

Therefore two options I'd recommend: revert to 0.2.4 or redirect your logs to a backend able to process the newer protocol of opentelemetry with the logs signal.