Replace StatsD UDP metric transport with native OpenTelemetry Metrics SDK
export via OTLP/HTTP behind the existing beast::insight::Collector interface.
- Task 7.1: Link opentelemetry-cpp to beast module in CMake when telemetry=ON
- Task 7.2: New OTelCollector class mapping beast::insight instruments to OTel
SDK (Counter, ObservableGauge, Histogram, Counter<uint64>) with OTLP/HTTP
export via PeriodicMetricReader at 1s intervals
- Task 7.3: Add server=otel branch to CollectorManager with endpoint config
- Task 7.4: Update otel-collector-config.yaml to use OTLP receiver for metrics
pipeline (StatsD receiver commented out for backward compat)
- Task 7.5: Metric names preserved via dot-to-underscore formatting matching
StatsD->Prometheus conventions
- Task 7.6: Rename Grafana dashboards from statsd-* to system-*, update titles
and UIDs from "StatsD" to "System Metrics"
- Task 7.7: Update integration test to use server=otel, verify OTLP metrics
- Task 7.8: Update runbook, TESTING.md, config reference, and data collection
reference docs
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add the close time span and its 6 attributes to the Phase 4 consensus
span table and attribute table in 09-data-collection-reference.md.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
