Bug fixes

What's Changed

• Fixed: Sub-reporter was producing a leading underscore in metric names when parent subsystem was empty by @gmbyapa in #10

Full Changelog: v2.2.0...v2.2.1

OTEL metric unit support

Added: Unit field to MetricConf for OTEL metric unit support (e.g. "ms", "By", "1")

Bug fixes

What's Changed

• Fixed: OTEL's Reporter was silently dropping the subsystem by @gmbyapa in #8

Full Changelog: v2.1.1...v2.1.2

Bug Fixes

Bug Fixes

• OTEL's metrics reporter is silently dropping the subsystem when the system is empty

Add OpenTelemetry backend, exemplars, and integration tests

Add OpenTelemetry backend, exemplars, and integration tests

Breaking Changes

• Counter.Count, Gauge.Count, Gauge.Set, and Observer.Observe now accept variadic ...RecordOption parameter. Existing callers are unaffected, but custom interface implementations must update their signatures.

What's Changed

• Add OTELReporter backend with support for counters, gauges, gauge
  functions, and histograms backed by OpenTelemetry SDK
• Add WithContext(ctx) RecordOption to propagate trace context as
  exemplars on metric recordings
• Add functional options pattern for OTELReporter (WithMeterProvider)
• Add exponential histogram support via AggregationBase2ExponentialHistogram
• Add integration tests with Testcontainers verifying three ingestion
  paths: OTLP direct push, OpenMetrics scrape, and PrometheusProto scrape
• Verify native histograms + exemplars work end-to-end through
  PrometheusProto scrape protocol
• Add doc comments to all interfaces, structs, and fields in reporter.go
• Add GitHub Actions CI workflow (build, vet, integration tests)
• Update README with usage docs, exemplar guide, and native histogram
  • exemplar setup instructions

v2.0.0

Breaking Changes

The Gauge interface now includes Set() method

What's Changed

• gauge set metrics introduce by @HADLakmal in #4

New Contributors

• @HADLakmal made their first contribution in #4

Full Changelog: v1.2.0...v2.0.0

Enhancements (superseded by v2.0.0)

⚠️ This release has been superseded by v2.0.0 and should not be used.

Bug fixes

Enhancements

• Prometheus client version upgrades

Bug Fixes

• Prometheus Gauge should use PromClient->Add instead of Set fixed

Enhancements

Enhancements

• Prometheus client version upgrades
• Metrics collector config Help added
• Observes default quartile option added

Go Mod Bug fixes

v1.0.1

go sum added