v2.5.7 - More Scala 3 Support & Ignoring Operations

Ignoring Metrics and Spans for Specific Operations

We get asked pretty often: how can we disable sampling for health checks and status endpoints? This Kamon Telemetry version comes with a new setting for that:

kamon.trace.ignored-operations = ["/status", "/health", "/ready"]

This has a few advantages over the groups configuration on the adaptive sampler:

• It works with all samplers, including always and random.
• It comes with a track-metrics-on-ignored-operations setting, which allows disabling metrics for these operations too (the adaptive sampler would only disable sampling but still track metrics for all operations).

Improvements

• instrumentation-common: This module is now published for Scala 3 as well. Special thanks to @vaslabs for going the extra mile on that PR 😍. Contributed by @vaslabs via #1191.
• core: Introduce a new setting to ignore operations and disable metrics for them. Contributed by @ivantopo via #1197