Files
parking_solution/wiki/concepts/device-registry.md
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julian 355026dcf7 Remove UHPPOTE/ZKTeco; Dingtian is the only access driver
Neither UHPPOTE nor ZKTeco is used — the Dingtian relay controller was chosen
and verified. Remove their code and re-scope the wiki.

Code:
- delete access-uhppote.ts, uhppoted.d.ts, access.ts (zkteco/esp32-relay stubs),
  and the three uhppote-*.mjs hardware test scripts.
- remove the `uhppoted` npm dependency from @parking/devices and @parking/server.
- unregister uhppote/zkteco/esp32-relay from the driver registry; drop their
  exports. Catalog access drivers = dingtian only. Build green (5/5).
- refresh now-stale example comments (registry/interfaces/setup/api) to use
  current examples; keep the two "UHPPOTE blocker" references that explain why
  the precondition capability exists.

Wiki (kept pages, re-scoped):
- uhppote-controller, zkteco-controller -> rejected/historical with callouts;
  uhppote-vs-esp32 -> historical (detection-vs-prevention lens still useful).
- re-point all "current device" framing (standing-decisions, bom, overview,
  open-questions, device-registry, device-discovery, index) to dingtian-relay.
- transferable concepts (network-isolation, event-log-ingestion, barrier-not-a-
  door, threat-model) untouched. Raw source immutable. Links lint clean.
2026-06-14 14:28:52 +02:00

2.5 KiB

type, tags, sources, updated
type tags sources updated
concept
parking
architecture
devices
configurable
parking-system-architecture
2026-06-15

Device Registry (selectable drivers)

How the system goes from "device-agnostic in principle" (device-adapter-pattern) to "admin picks the device at setup" in practice. A registry holds a catalog of supported drivers, grouped by category; the first-run-setup UI reads it so an operator can choose a device per lane and fill in its connection config.

Implementation-derived (from packages/devices), not the source doc.

The four categories

Category Examples (drivers) Interface
access ZKTeco, ESP32 relay (also UHPPOTE) AccessControlDevice — intent-only relay (barrier-not-a-door)
reader Wiegand-into-controller, TCP/IP reader ReaderDevice — RF/optical; two paths (entry-exit-readers)
camera Hikvision, Dahua CameraDevice — entry/exit snapshot-on-event
printer (ticket dispenser / booth printer) PrinterDevice

How a driver is described

Each driver declares: a stable id, its category, a human label/description, the transports it uses (tcp-ip, wiegand, …), a list of configFields (host, port, credentials, selects — what the setup UI renders), and a create(config) factory that validates config and returns a live adapter. Adding hardware support = registering one more driver; no business-logic change — this is the device-adapter-pattern made selectable.

Why a registry (not hard-coded wiring)

  • The admin chooses between multiple devices per category at install time, per lane (mirrors the "mixable per lane" principle — see trust-boundary, entry-exit-readers).
  • Config is validated against the driver's declared fields before persisting.
  • Selections persist in the lane_devices table and drive runtime adapter construction.
  • Drivers may optionally implement device-discovery (discover()), so the admin can scan the LAN instead of typing connection details — no current driver uses it (the UHPPOTE did, before removal; the dingtian-relay uses a fixed IP).

Cameras are modelled as snapshot-on-event: the host requests an image at entry/exit; it's stored and referenced from the signed event as an independent record — a fraud-control input to the append-only-event-chain (cf. lpr-camera as the recognition-based identity source).