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Central - data hub spine. Adapters -> NATS/JetStream -> archive.
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Matt Johnson 4215744a30 fix: move cancel_event signal outside lock for immediate delivery 
The cancel_event.set() call was inside the async lock context in
_on_config_change, causing delayed signal delivery to the sleeping
loop. This manifested as cadence decreases not applying without a
restart - the loop would sleep its full original timeout before
seeing the new cadence.

Fix: _reschedule_adapter now returns the AdapterState to signal,
and _on_config_change signals AFTER releasing the lock. This ensures
immediate event delivery per asyncio semantics.

The lock protects state consistency during config fetches and updates.
The cancel_event is a one-way notification that does not need lock
protection - it simply wakes the sleeping coroutine.

See docs/BUG-CADENCE-DECREASE.md for full investigation.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-05-16 05:59:45 +00:00
docs docs: Phase 1a-3 final close-out verification 2026-05-16 04:04:02 +00:00
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(db): add migration 002 for updated_at trigger and enabled index 2026-05-16 01:36:30 +00:00
src/central fix: move cancel_event signal outside lock for immediate delivery 2026-05-16 05:59:45 +00:00
systemd docs: add systemd unit files with EnvironmentFile directive 2026-05-16 02:38:21 +00:00
tests test: add hot-reload integration tests for cadence changes 2026-05-16 05:59:35 +00:00
.gitignore scaffold: initial repository structure 2026-05-15 19:16:24 +00:00
.python-version foundation: models, adapter ABC, config, CE wire, schema 2026-05-15 21:08:56 +00:00
LICENSE scaffold: initial repository structure 2026-05-15 19:16:24 +00:00
pyproject.toml feat(config): add CLI smoke command and dependencies 2026-05-15 23:08:03 +00:00
README.md scaffold: initial repository structure 2026-05-15 19:16:24 +00:00
uv.lock foundation: models, adapter ABC, config, CE wire, schema 2026-05-15 21:08:56 +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

License

MIT. See LICENSE.