processor

Files

T

julian b3d6410af6 feat(live): task 1.5.5 — snapshot-on-subscribe

Adds snapshot provider that queries the latest non-faulty position per device
registered to an event, returned in the `subscribed` reply so the SPA map is
populated immediately rather than waiting for the first live broadcast batch.

Key changes:
- src/live/snapshot.ts: createSnapshotProvider factory using DISTINCT ON
  (device_id) ... ORDER BY device_id, ts DESC with WHERE faulty=false; converts
  Date ts to epoch ms; omits speed/course when 0 (matching broadcast convention)
- src/main.ts: injects createSnapshotProvider(pool) into createSubscriptionRegistry
- test/live-snapshot.test.ts: 7 unit tests covering: two-device result, empty
  event, faulty exclusion, DISTINCT ON semantics, parameterized query, metrics
  observation, and error propagation

The snapshot query requires the positions_device_ts_idx created in migration 0002
(task 1.5.4).  Snapshot failures fail open — registry.fetchSnapshot returns [] so
the subscription still succeeds with an empty initial state.

2026-05-02 18:37:18 +02:00

Implement Phase 1 tasks 1.1-1.4 (scaffold + core types + config + Postgres)

2026-04-30 21:35:59 +02:00

codec.test.ts

Implement Phase 1 tasks 1.1-1.4 (scaffold + core types + config + Postgres)

2026-04-30 21:35:59 +02:00

config.test.ts

Realign processor stream-name default to telemetry:teltonika

2026-05-01 11:43:31 +02:00

consumer.test.ts

Implement Phase 1 tasks 1.5-1.8 (consumer + state + writer + main wiring)

2026-04-30 21:49:29 +02:00