# quarry-probe
Cloudflare Worker that watches the forge from outside the host. Cron every minute:
`GET https://zeitforge.app/api/v1/version` (10 s timeout; healthy = 200 and `ready:true`), and when
healthy `GET /r/quarry/timeline`.
- Down: alert after 2 consecutive unhealthy checks, once per incident, then a recovery mail with the outage length.
- Up but broken: timeline answers 5xx twice in a row with a healthy version endpoint. A 503 within 3 minutes of a version change (a deploy restart) is ignored.
- `GET` on the Worker URL returns its current state as JSON (no secrets).
Logic lives in `src/logic.js` as pure functions; `npm test` runs `node --test` with no network.
## Deploy
1. `cd scripts/probe && npm install`
2. `npx wrangler kv namespace create PROBE_STATE`, paste the id into `wrangler.toml`.
3. In the Cloudflare dashboard, Email Routing for the zone: enable it and verify the destination address.
4. Edit `wrangler.toml`: `ALERT_TO` (the verified address, also `destination_address` of `send_email`) and `ALERT_FROM` (an address on the Email Routing zone).
5. `npx wrangler deploy`
6. Open the `workers.dev` URL and confirm the JSON state updates each minute.