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Central - data hub spine. Adapters -> NATS/JetStream -> archive.
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zvx 570b121276 fix(2-G.5): preview_for_settings contract in adapter docstring + distinguish [] from None 
Fixup 1 — Contract section appended to SourceAdapter.preview_for_settings's
docstring. Override authors read adapter.py, not routes.py, so the contract
(pure function of settings; open your own short-lived aiohttp session; None
vs [] semantics) belongs on the base method, not on the GUI stub class.

Fixup 2 — _adapter_preview.html distinguishes [] from None. Previously the
elif test was truthiness (`elif preview_rows`) which collapsed both into
"render nothing". Now uses `elif preview_rows is not none` and special-cases
the empty-list case inside: legend "Preview (0 rows)" with no table; None
still renders nothing at all. Lets adapters signal "query ran, matched zero"
distinctly from "preview not meaningful".

Tests +1:
- test_partial_renders_empty_list — [] yields "Preview (0 rows)" legend,
  no table, no headers. Distinct from the existing None case.

Acceptance:
- 27/27 targeted (preview_hook +1 new, nwis, stream_registry).
- 458/458 full suite.
- (b) framework GUI dir still has zero adapter-name branches.
2026-05-19 17:55:39 +00:00
docs docs: add v0.3.0 changelog entry and network bindings reference (#29) 2026-05-18 14:26:09 -06:00
etc-templates scaffold: initial repository structure 2026-05-15 19:16:24 +00:00
scripts scaffold: initial repository structure 2026-05-15 19:16:24 +00:00
sql feat(2-G): USGS NWIS adapter (OGC API) + CENTRAL_HYDRO stream 2026-05-19 16:50:21 +00:00
src/central fix(2-G.5): preview_for_settings contract in adapter docstring + distinguish [] from None 2026-05-19 17:55:39 +00:00
systemd feat(gui): add auth core, setup gate, and first-run operator creation 2026-05-17 05:30:49 +00:00
tests fix(2-G.5): preview_for_settings contract in adapter docstring + distinguish [] from None 2026-05-19 17:55:39 +00:00
.gitattributes chore: normalize line endings to LF 2026-05-16 22:26:12 +00:00
.gitignore feat(gui): add auth core, setup gate, and first-run operator creation 2026-05-17 05:30:49 +00:00
.python-version foundation: models, adapter ABC, config, CE wire, schema 2026-05-15 21:08:56 +00:00
CHANGELOG.md docs: add v0.3.0 changelog entry and network bindings reference (#29) 2026-05-18 14:26:09 -06:00
LICENSE scaffold: initial repository structure 2026-05-15 19:16:24 +00:00
pyproject.toml release: bump version to 0.3.0 (#30) 2026-05-18 14:29:28 -06:00
README.md docs: add test database setup, restore geom to test fixture 2026-05-17 18:26:48 +00:00
uv.lock feat(gui): add auth core, setup gate, and first-run operator creation 2026-05-17 05:30:49 +00:00

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.