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Reading and storing data from SwissMetNet
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cmd Improve importer reliability and database tooling 2026-09-06 11:29:01 +02:00
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README.md Improve importer reliability and database tooling 2026-09-06 11:29:01 +02:00
Taskfile.yml Improve importer reliability and database tooling 2026-09-06 11:29:01 +02:00

README.md

SwissMetNet Importer

Downloads current SwissMetNet measurements from MeteoSwiss, validates them, and stores them in a local Pebble database (smninfo). The importer also keeps the latest successfully imported CSV as data.csv.

Source: MeteoSwiss — https://data.geo.admin.ch/ch.meteoschweiz.messwerte-aktuell/VQHA80.csv

Quick start

  • go run ./cmd/runner: download the latest measurements and import them into Pebble.
  • go run ./cmd/read: print all records as CSV.
  • go run ./cmd/read -station KLO -limit 10: print up to ten records for one station.
  • go run ./cmd/export: atomically export all records to smninfo.csv.
  • go run ./cmd/export -station KLO -out klo.csv: export one station.
  • go test ./...: run the test suite.

All commands accept -h. In particular, -db selects another database path; the runner also supports -url, -csv, -timeout, -retries, and -retry-wait for deployments and testing. Set -csv "" to disable the downloaded-file snapshot.

If you use Task, the same workflows are available as task run, task export, task read, task test, task tidy, task audit, and task build.

Data Format

Pebble keys are stored as <station>-<epoch-seconds>. Values contain the fixed-width binary encoding of the twenty numeric measurement fields from internal/data.StationData. Imports are committed as one durable batch; malformed or empty downloads do not modify the database or replace the last good CSV snapshot.