# DataCenterIndex.io — repo guide (read first)

> ⚠️ **PRODUCTION RETIRÉE LE 2026-10-02.** Le serveur OVH qui hébergeait cette app a été retiré du MacLustr (résiliation OVH ; seule la passerelle BHS64 est conservée). Plus aucune instance ne tourne, le site public ne répond plus et la route MacLustr Tunnel a été supprimée. Code final = ce dépôt (spbgit, branche `main`). Sauvegardes à froid : dumps Postgres + état sur **M3U96b:~/ovh-retired-20261002/**, manifestes/secrets/PM2 sur le laptop `~/Desktop/Cluster/secrets/ovh-retired-20261002/` (0600). Les procédures de déploiement ci-dessous sont historiques.

**Product**: the global index of data center infrastructure (facilities, campuses, operators, cloud regions, metros, countries, projects, IXPs, power, connectivity) with a live change feed. Feels like Our World in Data × a Bloomberg terminal for digital infrastructure × a global infrastructure map. **The product is the structured graph and its history, not the crawler.**

**Pipeline**: discover → fetch → archive → extract → normalize → reconcile → validate → version → detect changes → publish. Never `scrape → dump → show`.

## Non-negotiables
- **Never invent data.** No fake facilities, capacities, coordinates, dates. A figure that is an estimate is flagged `isEstimate`. City-level coordinates are `geo_precision = city`, never `exact`.
- **Provenance on every field** (`provenance` table: source, URL, first/last observed, retrieved, confidence, method).
- **Legal crawling**: robots.txt respected, no auth/paywall/CAPTCHA bypass, rate limits per host, conditional GET, content hashing — never refetch unchanged pages with premium credits. Attribution + license recorded per source (`sources.license/attribution`).
- **Escalation**: L1 direct HTTP → L2 direct + browser identity → L3 Firecrawl → L4 Scrapfly rendered. Escalate only when blocked / JS shell. Premium daily budgets (`DCI_SCRAPFLY_DAILY_BUDGET`, `DCI_FIRECRAWL_DAILY_BUDGET`).
- **Secrets** only in env / deploy secrets, never in git, never sent to the browser.
- **Mobile-first** UI (320–430 px first), then tablet/desktop. Industrial, premium, restrained: no neon, no fake terminal, no giant hero, no card soup.

## Layout
```
packages/core        types (entities, provenance, events), ids, hashing, normalize (MW, dates, status, money), geo, confidence, diff, ssrf, api-types (API contract)
packages/db          Drizzle schema (Postgres) + plain SQL migrations (migrations/*.sql, runner src/migrate.ts) + ClickHouse client/DDL
packages/connectors  connector SDK: types, YAML config schema, fetchers (direct/firecrawl/scrapfly + escalation), robots, ratelimit, discovery (sitemap/rss/links), extract (JSON-LD, embedded JSON, selectors, PDF), classify, registry (parsers/implementations), GenericConnector
config/connectors/*.yaml   one file per source (declarative; `parser:` or `implementation:` for code-backed logic)
apps/worker          runtime: ConnectorContext, document registry + storage (MinIO), change detection, ingest (reconcile/persist/events), scheduler (BullMQ), rankings/metrics, CLI `pnpm dci …`
apps/api             Fastify REST `/api/v1/*` (public) + `/api/admin/*` (token) — see packages/core/src/api-types.ts
apps/web             Next 16 (App Router, Tailwind v4, MapLibre) — SSR for content, lazy map/charts
deploy/              Dockerfiles, compose (data node + crawl node), edge Caddy, backups, monitoring
docs/                ARCHITECTURE.md, CONNECTORS.md (authoring guide), DEPLOY.md
```

## Conventions
- pnpm workspaces, TypeScript strict, ESM, `verbatimModuleSyntax` (use `import type`). Run `pnpm typecheck` before finishing.
- Ids: prefixed (`fac_`, `op_`, `prj_`, `evt_`, `doc_`…) via `newId()` / `stableId()` in `@dci/core`. Slugs unique per table.
- Drizzle: `casing: "snake_case"`. `sql\`${arr}\`` spreads arrays → use `textArray()` or `sql.raw`. `db.execute` returns timestamps as strings.
- Partial dates are strings: `2027`, `2027-06`, `2027-06-15`, `2027-Q2`, `2027-H1` (`parsePartialDate`, `formatPartialDate`).
- Connector keys are connector-scoped and stable (`peeringdb:fac:12`), mapped in `entity_keys` for idempotent re-ingestion.
- Events are deduplicated by `fingerprint` (entity + type + new value + day).
- API envelope `{ data, meta, sources }`. Web reads `NEXT_PUBLIC_API_URL` server-side (`API_URL_INTERNAL` preferred when set).
- Ports: web 8310 (Next, loopback in prod), api 8311, edge 8300 (Caddy in compose, bound to the WireGuard IP). Public: https://www.datacenterindex.io via BHS64 gateway.
- Local dev: Postgres `postgres://dci:dci@127.0.0.1:5432/dci`, Redis 6379, ClickHouse 8123, MinIO 9000 (see `.env.example`, `deploy/dev-compose.yml`).

## Connector authoring (short)
1. `config/connectors/<id>.yaml` (id, name, domain, kind, license/attribution, fetch levels, discovery, schedule, extractors).
2. Declarative fields when possible; otherwise a parser in `apps/worker/src/connectors/<group>/<id>.ts` (registered in `<group>/index.ts` `register()` via `registerParser`), or a full `implementation` (`registerImplementation`) for APIs/datasets.
3. Validate against LIVE pages: `pnpm dci run <id> --dry-run --limit 5` must yield valid entities (no errors in the ValidationReport). Nothing ships unverified.
4. Document the source (what, license, update cadence, quirks) in `docs/connectors/<id>.md`.