Export MultiSpanProcessor

[anuraaga]

NB: Before opening a feature request against this repo, consider whether the feature should/could be implemented in the other OpenTelemetry client libraries. If so, please open an issue on opentelemetry-specification first.

Is your feature request related to a problem? Please describe.

NodeSdk accepts a single span processor, and because MultiSpanProcessor is not exported but is just an implementation detail of addSpanProcessor, there doesn't seem to be a way to use NodeSdk with multiple span processors.

Describe the solution you'd like

Export MultiSpanProcessor for use.

Describe alternatives you've considered

Can add an array field accepting multiple span processors in NodeSdk. It seems complicated given the fields there already are (there is already tension between the incompatible traceExporter and spanProcessor fields.

Additional context

Add any other context or screenshots about the feature request here.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[lmnogues]

as an alternative i've duplicated the muiltispanprocessor inside my own app but it feels wrong to do

[YunosukeY]

Is PR #4454 a solution to this request?

[anuraaga]

Yeah it looks like it, unfortunate now there's three incompatible fields, traceExporter spanProcessor spanProcessors. But it's ok