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Northern-Thailand-Ping-Rive…/scripts/ping-collector.service
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feat(rust): ping-collector, phase 1 of the Rust rewrite
rust/collector replaces the collection half of the Python web app: RID hourly
gauges (with the late-report semantics: store everything, retry every 10 min
while RID is behind, re-fetch yesterday's holes, startup gap fill), HII rain +
water level, RID dams (today + yesterday) and Open-Meteo rain. Same tables and
upsert semantics, one UNNEST statement per table, Bangkok wall-clock time
regardless of the server time zone.

Python side: COLLECTION_ENABLED=false makes the API leader stop collecting and
instead re-forecast + notify when the newest RID reading in the database
advances (polled every FORECAST_POLL_SECONDS) and once per clock hour;
/scraping/status then serves the collector's status file; /scrape/trigger
answers 409.

Verified: 20 Rust tests (parsers, gap/schedule logic, database tests against
PostgreSQL); live parity run of both collectors into two empty databases:
all 9 tables row-for-row identical (scripts/collector_parity.py); the Python
API served health, measurements, stats, status and model forecasts from a
database filled only by ping-collector. 177 Python tests pass.

reqwest uses native-tls: app.rid.go.th offers only TLS 1.2 CBC suites, which
rustls refuses.

Deploy/cutover/rollback: scripts/install_collector.sh, scripts/ping-collector.service;
CI: .gitea/workflows/rust.yml (fmt, clippy, tests with a PostgreSQL service,
release artifact).
2026-10-17 22:20:02 +07:00

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Desktop File

[Unit]
Description=Ping River Monitor data collector (Rust: RID, HII, dams, Open-Meteo)
Documentation=https://git.b4l.co.th/B4L/Northern-Thailand-Ping-River-Monitor/src/branch/master/rust
After=network-online.target
Wants=network-online.target
[Service]
Type=simple
User=water-monitor
Group=water-monitor
WorkingDirectory=/opt/thailand-water-monitor
ExecStart=/opt/thailand-water-monitor/bin/ping-collector run
Restart=always
RestartSec=30
TimeoutStopSec=20
# Same .env as water-monitor.service (POSTGRES_*, RID_*, GAP_FILL_*,
# SCRAPING_STATUS_FILE). The Python app must run with COLLECTION_ENABLED=false.
EnvironmentFile=/opt/thailand-water-monitor/.env
# Security settings
NoNewPrivileges=true
PrivateTmp=true
ProtectSystem=strict
ProtectHome=true
ReadWritePaths=/opt/thailand-water-monitor
CapabilityBoundingSet=
MemoryMax=256M
StandardOutput=journal
StandardError=journal
SyslogIdentifier=ping-collector
[Install]
WantedBy=multi-user.target