- ledgerline.transactions.total (counter: kind, status, currency) and
ledgerline.transaction.duration (histogram, seconds: kind) in gateway,
the only place that sees the final outcome, failures included. currency
is client input, so values outside the seeded set are recorded as
"other".
- ledgerline.fraud.score (histogram, buckets in 0.1 steps to 1.0) in fraud.
- ledgerline.stream.lag (observable gauge: consumer_group) in audit and
notifier, read from XINFO GROUPS through a separate sync Redis client,
because callbacks run on the scrape thread; the call is untraced so
scrapes don't create traces.
- ledgerline.db.pool.in_use (observable up-down counter: pool) in every
service with a DB engine. The SQLAlchemy instrumentation's own pool
metric names a pool by DSN, which merges the normal and starved engines.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
sanctions, notifier, ledger, insights and audit now call setup_telemetry
and instrument their engines with one SQLAlchemyInstrumentor call per
process (a second instrument() call is ignored, leaving that engine with
connect spans only). ledger and insights pass both their normal and
starved engines. The FastAPI services also get the server span, with the
same /healthz and receive/send exclusions as sanctions.
Compose: OTEL_SEMCONV_STABILITY_OPT_IN=http,database for the stable
attribute names, the OTLP endpoint moves to the shared env, and the four
newly instrumented services get the auth header from .env.observability.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
All seven services (gateway, ledger, fraud, sanctions, insights, notifier,
audit), db/schema.sql plus optional_indexes.sql, scripts/seed.py and
smoke.py, the gateway-served frontend, and docker-compose.yml. Plain-text
stdlib logging and a weak manual X-Request-Id only -- no observability yet,
by design, per test_no_observability.py. Implements all 13 named chaos-flag
pathologies from docs/PATHOLOGIES.md behind Redis-backed runtime flags.
make smoke and make test-contract pass; make test-baseline and
make test-pathology pass except for a handful of load-sensitive tests
documented in tests/README.md rather than papered over.
Movses AslanyanandClaude Opus 5.5