Phase 4 of docs/RUST_REWRITE.md. Since 2026-10-18 ping-collector (rust/) collects, forecasts, notifies (ntfy + Matrix) and serves the website/API; nothing in production ran the Python service code any more. Removed (~17k lines): the FastAPI app (web_api, schemas, health_check, metrics, postgres_history, forecast_history, thaiwater), the Python RID collector and CLI (water_scraper_v3, main, run.py), the notifier and Matrix alerting (notify, alerting), the multi-backend adapters (SQLite, MySQL, InfluxDB, VictoriaMetrics) with demo databases, models/validators/exceptions/ logging/rate limiter, ml/skill.py (served by Rust now), the migration tooling (api_parity, collector_parity, e2e_notify, install_collector.sh, gen_notify_cases.py, spikes/rust-forecast), Docker/compose/Grafana files, sql/, the release workflow and the docs for all of that. Their tests went with them. Kept in Python: src/ml (training, evaluation harness, export; predict.py as the reference the Rust forecaster is tested against), the HII and RID-dam clients/stores for the archive backfills (their live collectors removed), the backfill scripts, retrain.sh + timer, forecast_parity.py. - PostgreSQL only: src/config.py is database_url() from POSTGRES_* / .env; the stores lost their sqlite/mysql branches (and the 2026-08 column migration). The database tests run against a throwaway schema from TEST_DATABASE_URL (tests/conftest.py pg_url, skipped without it), as the Rust tests do; CI gets a PostgreSQL service. 100 tests (66 without a DB). - The notifier settings moved from src/notify.py into src/ml/export.py; flood_config.json regenerates byte-identical. - tests/test_dashboard.py checks every path the dashboard fetches against ping-collector's router. - Dependencies: fastapi, uvicorn, pydantic, influxdb, pymysql, psutil, schedule, sphinx, pyinstaller, mypy, pytest-asyncio dropped; python-dotenv 1.1.1 explicit (it came in through uvicorn[standard]). - Formatting contract extended to scripts/ and tests/ (reformatted once). - scripts/install.sh is the one installer (fresh host or update, in place in a checkout without touching its ownership): binary, units, uv sync, .env defaults, removes the retired water-monitor.service and any old --alert-check cron job, dry run + forecast check, restart, readiness wait. - Docs, CLAUDE.md, CONTRIBUTING.md, .env.example, Makefile, unit comments and Rust doc comments updated to the Rust service.
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Quick Matrix Alerting Setup
Step 1: Get Matrix Account
- Go to https://app.element.io or install Element app
- Create account or login with existing Matrix account
Step 2: Get Access Token
Method 1: Element Web (Recommended)
- Open Element in browser: https://app.element.io
- Login to your account
- Click Settings (gear icon) → Help & About → Advanced
- Copy your "Access Token" (starts with
syt_...or similar)
Method 2: Command Line
curl -X POST https://matrix.org/_matrix/client/v3/login \
-H "Content-Type: application/json" \
-d '{
"type": "m.login.password",
"user": "your_username",
"password": "your_password"
}'
Step 3: Create Alert Room
- In Element, click "+" to create new room
- Name: "Water Level Alerts"
- Set to Private
- Copy the room ID from room settings (format:
!roomid:matrix.org)
Step 4: Configure .env File
Add these to your .env file:
MATRIX_HOMESERVER=https://matrix.org
MATRIX_ACCESS_TOKEN=syt_your_access_token_here
MATRIX_ROOM_ID=!your_room_id:matrix.org
Step 5: Restart and check
The Matrix messages are sent by ping-collector (the Rust service, with
FORECAST_IN_COLLECTOR=true), together with the ntfy notifications:
sudo systemctl restart ping-collector
journalctl -u ping-collector | grep -i matrix # "Matrix notifications: room ... on ..."
# what would be sent right now (ntfy and Matrix), changing nothing:
sudo -u water-monitor /opt/thailand-water-monitor/bin/ping-collector notify --dry-run
What the room receives
The same transitions as the ntfy topics (docs/NOTIFICATIONS.md), each once: a station crossing its warning or danger level and back (0.10 m hysteresis), the P.1 early-warning outlook turning on and off, and the gauge feed going stale or recovering. ntfy's per-topic summaries ("Ping River: warning level reached") are not repeated in the room. For example:
⚠️ **Warning level at P.1**
Nawarat Bridge, Chiang Mai city: 3.75 m at 18 Oct 14:00, above the warning level of 3.70 m.
📈 Dashboard: https://water.buildfor.life/
The room has its own delivery state (matrix: keys in notification_state),
so a Matrix outage is retried on Matrix only and does not re-send ntfy.
The old run.py --alert-check cron job (every 15 minutes, repeating an alert
for as long as a level stayed high) is replaced by this;
scripts/install.sh comments it out of the crontab if it is still there,
keeping a backup next to the app.
Troubleshooting
- HTTP 401/403 in
journalctl -u ping-collector: the access token is invalid or the account is not in the room. - Room not found: the room ID needs the
!prefix and the:homeserversuffix. - Nothing sent: there was no transition;
ping-collector notify --dry-runshows the readings judged and what would be sent.