navi/backend
Matt Johnson 565e774864 Add navi-config service (extraction #2 PR-B)
New services/navi_config/ on :8422, mirroring recon's /api/config contract:

  - config_route.py: GET /api/config -> jsonify(get_deployment_config())
    with Cache-Control: public, max-age=300 (byte-for-byte recon's response).
  - config_loader.py: faithful port of recon lib/deployment_config.py. Reads
    RECON_PROFILE (default "home") and NAVI_CONFIG_PROFILES_DIR (default
    /opt/recon/config/profiles, so it serves the SAME files recon does during
    cutover). yaml.safe_load, module-level cache. Lazy load (vs recon's eager
    import-time load) so the module imports cleanly off-VM and a missing
    profile surfaces as HTTP 500 at request time rather than a failed import.
  - admin.py: /api/admin/navi-config/info per handoff §4.5, require_auth gated.
    env values (NAVI_CONFIG_PROFILES_DIR, RECON_PROFILE) are non-secret paths/
    names, shown as-is (no mask_key); dependencies=[]; filesystem reports the
    active profile path + exists/readable.
  - app.py: create_app() factory mirroring navi_traffic, same metrics wiring;
    resets the loader cache per instance so each worker/test reloads fresh.

Deploy artifacts: systemd unit (:8422) and an nginx snippet using
`location ^~ /api/config` (the ^~ convention from extraction #1 so the asset
.png/.css regex can't shadow it). No proxy_cache zone — the response is
already cached in-process and via Cache-Control: max-age=300; emits a literal
X-Cache-Status: BYPASS for parity with navi-traffic.

Adds PyYAML>=6 to deps. Tests (services/navi_config/tests): 200 + parsed dict,
Cache-Control header, RECON_PROFILE override, default=home, missing profile=500.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-22 08:25:06 -06:00
..
deploy Add navi-config service (extraction #2 PR-B) 2026-05-22 08:25:06 -06:00
services Add navi-config service (extraction #2 PR-B) 2026-05-22 08:25:06 -06:00
shared Initial scaffold: navi-backend + navi-traffic (extraction #1) 2026-05-21 22:26:50 -06:00
.gitignore Initial scaffold: navi-backend + navi-traffic (extraction #1) 2026-05-21 22:26:50 -06:00
LICENSE Initial scaffold: navi-backend + navi-traffic (extraction #1) 2026-05-21 22:26:50 -06:00
pyproject.toml Add navi-config service (extraction #2 PR-B) 2026-05-22 08:25:06 -06:00
README.md Initial scaffold: navi-backend + navi-traffic (extraction #1) 2026-05-21 22:26:50 -06:00

navi-backend

Monorepo of small, single-responsibility HTTP services extracted from the recon codebase as part of the recon ↔ Navi decoupling project. Each service owns a slice of the /api/* surface that navi.echo6.co depends on, runs behind the existing Caddy/Authentik edge, and is fronted by the navi.echo6.co nginx vhost.

See HANDOFF-recon-navi-decoupling-v3.md for the full plan. This repo is extraction #1: navi-traffic.

Layout

navi-backend/
├── shared/                  # cross-service helpers, imported by every service
│   ├── auth.py              # get_user_id(req), require_auth decorator (Authentik header)
│   └── admin_info.py        # build_info_response(), mask_key(), time_dependency()
├── services/
│   └── navi_traffic/        # extraction #1 — TomTom traffic tile proxy (:8421)
│       ├── app.py           # Flask factory (create_app) + gunicorn entry
│       ├── traffic.py       # /api/traffic/flow/<z>/<x>/<y>.png  (ported from recon)
│       ├── admin.py         # /api/admin/navi-traffic/info  (§4.5 admin convention)
│       └── tests/
└── deploy/
    ├── systemd/navi-traffic.service
    └── nginx/navi-traffic.conf.snippet

Service directories use an underscore (navi_traffic) so they're importable Python packages; the service name stays navi-traffic (hyphen) in systemd, nginx, and the admin-info service field.

Setup

Single workspace, single virtualenv:

python -m venv .venv
.venv/bin/pip install -e .

Test

.venv/bin/pytest services/navi_traffic/tests/ -v

Run (local)

TOMTOM_API_KEY=... .venv/bin/gunicorn 'services.navi_traffic.app:create_app()' \
    --bind 127.0.0.1:8421 --workers 2

The admin-info convention (§4.5)

Every service exposes GET /api/admin/<service-name>/info, gated by require_auth, returning a uniform shape: service, version (git SHA), port, config, env (names + masked values), dependencies (upstream health checks), filesystem, runtime (uptime / request count / last error). No aggregator — a future admin panel fans out to each service in parallel.