Pratik Mankawde 919908b2b4 Phase 9: Internal Metric Instrumentation Gap Fill (Tasks 9.1-9.10) ...

Implement ~50 OTel metrics covering NodeStore I/O, cache hit rates,
TxQ state, PerfLog per-RPC/per-job counters, CountedObject instances,
and load factor breakdown via MetricsRegistry.

Core implementation:
- MetricsRegistry class with synchronous instruments (Counter, Histogram)
  for RPC and Job metrics, and ObservableGauge callbacks for cache, TxQ,
  CountedObject, LoadFactor, and NodeStore state polling.
- ServiceRegistry extended with getMetricsRegistry() virtual method.
- Application wires MetricsRegistry lifecycle (create/start/stop).
- PerfLogImp instrumented to emit OTel metrics on RPC and Job events.

Dashboards & observability:
- 3 new Grafana dashboards: RPC Performance, Job Queue, Fee Market/TxQ.
- Extended statsd-node-health dashboard with NodeStore, Cache, and
  CountedObject panels.
- 10 alerting rules added to telemetry-runbook.md.
- Integration test extended with 12 OTel metric validation checks.

Documentation:
- 09-data-collection-reference.md updated with Phase 9 metric tables.
- Unit tests for MetricsRegistry disabled-path (no-op) behavior.

All OTel SDK code guarded with #ifdef XRPL_ENABLE_TELEMETRY.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-11 15:02:10 +00:00

..

libxrpl

Fix Log.cpp: ToLowerBase16 requires nostd::span, not raw char arrays

2026-03-11 15:02:10 +00:00

test

Phase 9: Internal Metric Instrumentation Gap Fill (Tasks 9.1-9.10)

2026-03-11 15:02:10 +00:00

tests

Add consensus.accept.apply span with ledger close time attributes

2026-03-11 15:02:09 +00:00

xrpld

Phase 9: Internal Metric Instrumentation Gap Fill (Tasks 9.1-9.10)

2026-03-11 15:02:10 +00:00