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Central - data hub spine. Adapters -> NATS/JetStream -> archive.
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Matt Johnson 98b050b2af feat(3-K): real geocoder backends + producer-doc reframe + consumer-doc enrichment 
Second of three PRs for v0.5.0 (J shipped the framework; this fills in real
backends + documents the reframed design principle in-tree; L is the events
tab + map fix, then tag).

Backends (all satisfy GeocoderBackend; never raise, all-null on any failure):
- NaviBackend — composed Navi /api/reverse/<lat>/<lon> (name/address + timezone
  + landclass + elevation in one call). Near-passthrough: response already
  matches the canonical 9-field shape. Best-effort warmup ping (Boise) on
  construction when a loop is running; config `headers` slot for a future
  Authorization: Bearer (config-only, no code change). Default base_url
  http://192.168.1.130:8440.
- PhotonBackend — raw Photon /reverse?lat&lon&limit=1 (name/address only).
  Maps features[0].properties; postal_code <- postcode; timezone/landclass/
  elevation_m null (Navi-composed-endpoint extras).
- NominatimBackend — OSM Nominatim /reverse?format=jsonv2 (name/address only).
  Configurable rate limit (default 1/sec; 0 disables for self-hosted) +
  required User-Agent. Maps the address block; landclass/elevation_m/timezone
  null.

Registered all three in supervisor _BACKEND_REGISTRY (resolved by EnrichmentConfig
backend_class name).

Docs — design pivot now in-tree:
- PRODUCER §2 reframed: the verbatim Matt quote stays; the translation inverts.
  Central is the consumer's only data plane (consumers can't do follow-up
  lookups), so enrich deliberately and centrally, namespaced under _enriched,
  failing to null. "No enrichment" is gone.
- PRODUCER §10.1 inverted: enrichment is expected; the anti-pattern is doing it
  OUTSIDE the framework (inline in poll(), bypassing cache + _enriched
  namespacing + the never-raise safety net).
- PRODUCER new §13 Enrichment contract: Enricher / GeocoderEnricher /
  GeocoderBackend Protocols, NoOpBackend default, sqlite cache + TTL +
  cache-all-null + don't-cache-on-raise semantics, _enriched.<name> provenance,
  per-field coverage matrix (cross-checked against GEOCODER_FIELDS), and the
  landclass antimeridian known wrinkle.
- CONSUMER FIRMS section: documents the data._enriched.geocoder bundle (9
  fields), per-region coverage (US-full, non-US timezone+elevation), and the
  antimeridian landclass caveat.

Tests:
- test_navi/photon/nominatim_backend.py — happy-path field mapping, null
  handling, extra-key drop, network/timeout/non-200/malformed -> all-null
  (never raises), Nominatim rate-limit (disabled + spacing) + User-Agent.
  Env-gated live Navi smoke (NAVI_INTEGRATION_TEST=1; skipped by default — the
  192.168.1.130 endpoint isn't reachable from CT104's segment).
- test_producer_doc.py — +4: §2 verbatim quote present, §10.1 subsection exists,
  §13 names all four protocol types, §13 coverage matrix == GEOCODER_FIELDS
  (derived from code, not hardcoded).

Verification: full pytest 525 passed, 1 skipped (was 495; +30 backend +
4 doc tests, -1 the env-gated skip). grep subject_for_event/_ADAPTER_REGISTRY
clean. All three backends import + resolve via the registry.

Flagged for later (NOT done here): adapters besides FIRMS that should declare
enrichment_locations (nwis, eonet, gdacs, usgs_quake, wfigs_*) — that's PR L
scope alongside the events tab. See PR description.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-20 16:10:44 +00:00
docs feat(3-K): real geocoder backends + producer-doc reframe + consumer-doc enrichment 2026-05-20 16:10:44 +00:00
etc-templates
scripts
sql feat(2-G): USGS NWIS adapter (OGC API) + CENTRAL_HYDRO stream 2026-05-19 16:50:21 +00:00
src/central feat(3-K): real geocoder backends + producer-doc reframe + consumer-doc enrichment 2026-05-20 16:10:44 +00:00
systemd
tests feat(3-K): real geocoder backends + producer-doc reframe + consumer-doc enrichment 2026-05-20 16:10:44 +00:00
.gitattributes
.gitignore
.python-version
CHANGELOG.md docs: add v0.3.0 changelog entry and network bindings reference (#29) 2026-05-18 14:26:09 -06:00
LICENSE
pyproject.toml release: bump version to 0.3.0 (#30) 2026-05-18 14:29:28 -06:00
README.md
uv.lock

README.md

Central

Central is the data hub spine for the infrastructure. Adapters normalize upstream sources into a canonical event shape, publish CloudEvents to NATS/JetStream, and archive to TimescaleDB for historical query. Single-LXC deployment.

Status

Phase 0 — scaffold. Not yet operational.

Architecture

  • Python 3.12 (uv-managed)
  • NATS + JetStream for live event bus
  • TimescaleDB + PostGIS for archive and geospatial query
  • One supervisor process managing adapter lifecycle
  • One archive consumer process persisting events to TimescaleDB
  • Both processes systemd-managed

Testing

See docs/test-database.md for test database setup.

License

MIT. See LICENSE.