julian
b2a0471b08
Add the rongta PrinterDevice driver (ESC/POS over raw TCP 9100) and the device-agnostic pieces around it: - Roles + failover: each printer declares a role (entry-dispenser/booth- receipt) and failoverRank; printer-routing.ts picks the best healthy printer and falls back outside->booth for entry tickets (never the reverse). - Live status: MonitorableDevice.readStatus()/PrinterStatus capability. The Rongta driver scrapes the device's own /prn_stat.htm (Cover/Cutter/Paper End/Near End/Off-Line) rather than hand-decoding DLE EOT, whose reply bytes on this clone don't match the canonical ESC/POS bit layout (verified on hardware) -- avoids a false-healthy. Maps to ready/degraded/offline, fail safe on an unreachable or unexpected page. - Server PrinterMonitor polls enabled printers (PRINTER_POLL_MS, default 5s), caches latest, emits "printer-status" on change. Exposed via GET /api/printers/status and an SSE stream for the booth UI. Verified against 10.0.10.6: ready when healthy, offline when unreachable (no throw), bus emits on change and suppresses unchanged reads. Wiki: new rongta-printer entity, printer-roles-failover and printer-status-monitoring concepts; BOM/index/log updated.
84 lines
5.2 KiB
Markdown
84 lines
5.2 KiB
Markdown
---
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type: overview
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tags: [parking, index]
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updated: 2026-06-14
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---
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# Index
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Content catalog for the wiki. Start at [[overview]]. Maintained on every ingest.
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Counts: 1 source · 15 entities · 12 concepts · 2 decision records.
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## Overview & navigation
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- [[overview]] — the top-level synthesis and entry point.
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- [[index]] — this catalog.
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- `log.md` — chronological record of ingests/queries/lints.
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## Sources
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- [[parking-system-architecture]] — design notes: stack, threat model, devices, UHPPOTE, ESP32, readers, BOM, open decisions.
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## Entities — technology stack
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- [[technology-stack]] — the full stack table; all MIT/Apache/BSD, chosen to avoid lock-in.
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- [[fastify]] — Node backend; hosts device-driver plugins + auth; serves the SPA.
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- [[sqlite]] — local single-writer DB (WAL); limits & why it fits.
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- [[drizzle-orm]] — ORM; schemas port to PostgreSQL for remote sync.
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- [[turborepo]] — monorepo tool.
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- [[react-vite-spa]] — React/Vite frontend served by Fastify.
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- [[local-jwt-auth]] — fully local auth (JWT + bcrypt + role guard); forced by offline-first.
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## Entities — rejected alternatives
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- [[payload-cms]] — strong, but rejected over BSL license shift (the rug-pull cautionary case).
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- [[refine]] — dropped for plain React; UI too simple to justify a framework.
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- [[logto-zitadel-oidc]] — OIDC providers ruled out by offline-first.
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## Entities — hardware & devices
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- [[uhppote-controller]] — ❌ rejected/historical; firmware auto-open blocker drove the switch to Dingtian.
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- [[esp32-custom-controller]] — prevention-grade upgrade; device-level auth.
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- [[atecc608]] — secure element; non-extractable signing key (host events + controller auth).
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- [[wiegand]] — reader standard feeding the controller directly (autonomous permit-holder path).
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- [[lpr-camera]] — edge-AI plate recognition; host-side casual-identity source.
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- [[zkteco-controller]] — ❌ rejected/historical; aux-input path was a contender, not pursued.
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- [[dingtian-relay]] — ✅ CHOSEN access controller; decoupled inputs solve the button blocker (driver verified on hardware).
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- [[rongta-printer]] — ✅ CHOSEN 80mm thermal printer; ESC/POS over raw TCP 9100; driver written, one unit reachable at 10.0.10.6.
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- [[bom]] — reference bill of materials (barrier, loops, controller, readers, payment, host, network).
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## Concepts — foundational forces
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- [[offline-first]] — no network dependency in core operation; what it forces (and doesn't).
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- [[threat-model]] — the operator-at-the-booth reframing; why encryption defends the wrong threat.
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## Concepts — integrity & anti-fraud
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- [[append-only-event-chain]] — append-only + hash chain + ATECC608 signing = unforgeable log.
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- [[reconciliation]] — the real anti-fraud control; what remote sync actually is.
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- [[disk-os-hardening]] — LUKS/GRUB/Secure Boot; worthwhile but not the main event.
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## Concepts — device architecture & safety
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- [[device-adapter-pattern]] — business logic talks to interfaces; swap hardware → new adapter.
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- [[device-registry]] — catalog of selectable drivers per category (admin-configurable).
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- [[first-run-setup]] — admin assigns devices per lane from the catalog at install.
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- [[device-input-flow]] — button → device push → backend decides → relay; backend is source of truth.
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- [[device-discovery]] — optional driver capability to scan the LAN (no current driver uses it; UHPPOTE was the example).
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- [[barrier-not-a-door]] — never timed-close a barrier; safety lives in barrier firmware.
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- [[printer-roles-failover]] — ≥2 printers per lane by role; entry ticket falls back outside→booth.
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- [[printer-status-monitoring]] — live poll of paper/cover/cutter/offline via the device's status page; SSE to the booth UI.
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- [[trust-boundary]] — the core fork: network vs. device; auditable vs. unforgeable.
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- [[fail-state-safety]] — entry fails closed, exit fails open; manual override; watchdog.
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## Concepts — access control
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- [[uhppote-udp-protocol]] — open UDP weakness + the unauthenticated commands that undermine the log.
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- [[network-isolation]] — mandatory VLAN isolation; the network as security boundary.
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- [[event-log-ingestion]] — host-side index tracking that makes the UHPPOTE log trustworthy.
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- [[challenge-response-auth]] — asymmetric nonce scheme for the ESP32 (auth + anti-replay).
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- [[entry-exit-readers]] — two populations, two integration paths; both can share a relay.
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- [[uhppote-vs-esp32]] — comparison: detection vs. prevention.
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## Dev environment (reference)
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- [[local-dev-workflow]] — running the stack locally; setup, the dev-hang gotchas, seed:admin.
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- [[wsl-dev-networking]] — WSL2 NAT blocks device broadcast; use mirrored mode + the gotchas after.
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## Decisions
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- [[standing-decisions]] — settled decisions (stack, platform, integrity, access control, readers).
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- [[open-questions]] — 7 open items (6 procurement + JWT key choice); ESP32 device auth deferred.
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- [[access-controller-button-flow]] — ✅ RESOLVED: Dingtian decoupled inputs enable ticket-first entry (was a UHPPOTE/ZKTeco blocker).
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- [[autonomous-direction]] — roadmap: toward fully unmanned (no booth); reshapes threat model + fail-state.
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- [[dingtian-vs-mqtt]] — transport choice: direct HTTP/UDP now, MQTT parked until multi-lane scale.
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