PoC: Netflow exporter

[mariomac]

As an alternative to Prometheus, I added a PoC NetFlow exporter to Beyla Network metrics. To work, it requires a NetFlow collector such as the Netflow collector in OTEL-Collector-Contrib.

This currently only provides basic network data, missing any kubernetes decoration:

You can give a try by deploying the following two files:

https://github.com/mariomac/distributed-service-example/blob/main/netflow-otel-lgtm.yml
https://github.com/mariomac/distributed-service-example/blob/main/netflow-beyla.yml

[codecov-commenter]

Codecov Report

❌ Patch coverage is 8.71212% with 241 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.70%. Comparing base (e84bc71) to head (935e479).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/export/netflow/netflow.go	2.13%	229 Missing ⚠️
pkg/components/beyla.go	61.90%	6 Missing and 2 partials ⚠️
pkg/beyla/config.go	42.85%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2227      +/-   ##
==========================================
- Coverage   64.68%   61.70%   -2.98%     
==========================================
  Files          37       35       -2     
  Lines        3514     3084     -430     
==========================================
- Hits         2273     1903     -370     
+ Misses       1089     1009      -80     
- Partials      152      172      +20     

Flag	Coverage Δ
integration-test	?
k8s-integration-test	61.60% <8.71%> (-4.76%)	⬇️
oats-test	14.82% <3.40%> (-1.07%)	⬇️
unittests	?

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[grcevski]

Oh very cool!