Add support for apache nifi integration

[bputt-e]

Is your feature request related to a problem? Please describe. We're looking to add tracing to Apache NiFi and are weighing options of adding an otel implementation within NiFi or seeing if auto instrumentation is more feasible

Describe the solution you'd like Apache NiFi uses spring under the hood, ideally this adds some additional implementation that supports NiFi

Describe alternatives you've considered We're investigating this as an option vs adding manual instrumentation into Apache NiFi

Additional context Apache NiFi can become a little complex...Given the most basic example, imagine if you had two files come in, both files have different traceIds. We decide to merge those files into a single file, what traceId/parentId gets set to the single file?

[trask]

hi @bputt-e! if you are able to drop by the OpenTelemetry Java meeting tomorrow at 9am Pacific (and there's also a meeting at 6pm Pacific) that would be a great time to chat through options https://calendar.google.com/calendar/u/0/embed?src=google.com_b79e3e90j7bbsa2n2p5an5lf60@group.calendar.google.com

or if you can describe your initial thoughts/ideas here we can try to provide some pointers/guidance

[bputt-e]

@trask I will come to your 6pm Pacific meeting on June 2

[trask]

hey @bputt-e! just doing some issue triage, how's this going? thx

[bputt-e]

hello @trask it's going well, we created a proof of concept originally w/ byte buddy and are now migrating it to the java-instrumentation code base, hoping to submit a pr in the next ~4 weeks

[bputt-e]

@trask would you or other contributors be able to support a call to go over our instrumentation to help answer some issues we're running into during the build? we could present it at next thursday's meeting, but figured it'd take up too much of the meeting

[mateuszrzeszutek]

Hey @bputt-e , This kind of thing is exactly what the SIG meeting is supposed to be used for -- don't worry about taking up too much time, go ahead and join the Thu meeting.

[trask]

I added it to the top of the agenda

[benhason1]

Hi, @bputt-e is there any update about the pr? We would love to use youre open telemetry Nifi processor.

[bputt-e]

@benhason1 we're prob about 3 - 4 weeks away from getting approval to release the source code, which even then, we'll need some help from OTEL on fixing the build for older versions of nifi

[Doron-Bargo]

@bputt-e did you though on using the provenance log to achieve the same goal?

[bputt-e]

@Doron-Bargo we didn't want to force people to turn on provenance in order to achieve tracing, plus we wanted to ensure tracing propagated from nifi to nifi and/or nifi to http/kafka/jms/etc... using the traceparent header

[Doron-Bargo]

Amazing @bputt-e are we still in the previous timelines - around 2 weeks from now?

[bputt-e]

@Doron-Bargo yes, just waiting on approval to release

[Doron-Bargo]

Thanks is there a pr for it? So we can follow

[bputt-e]

@Doron-Bargo nope, can't release code until we get approval

[galbash]

A bit late to the party but just in case this is still relevant: https://github.com/galbash/otel-nifi-extension (version 1.22.0)

[fuzolan]

A bit late to the party but just in case this is still relevant: https://github.com/galbash/otel-nifi-extension (version 1.22.0)

This would be great in the nifi core as a configured service