Gabriel Radureau
13dc7aee13
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Aligns the project name with the public URL (tg.arcodange.fr) and the Arcodange organization conventions. The 'homelab-gateway' name was too generic. Touches: chart name + helpers, image registry path, Go module path, secret/configmap names, deployment mountPath, all docs.
92 lines
3.5 KiB
Markdown
92 lines
3.5 KiB
Markdown
# telegram-gateway
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Telegram **webhook gateway** for the Arcodange home lab. Replaces polling-based
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bots (e.g. those scheduled in Cowork) with direct webhook delivery from
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Telegram, routed to per-bot handlers running on the k3s cluster.
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> Phase 1 (MVP): single sync `echo` handler, end-to-end flow validated.
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> Phase 2 (planned): `http` forward handler + Postgres-backed durable queue.
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> Phase 3 (planned): async `shell` / `script` / `ollama` handlers.
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See the design doc at `~/.claude/plans/pour-les-notifications-on-inherited-seal.md`.
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## Architecture (current)
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```
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Telegram → Cloudflare Tunnel (tg.arcodange.fr) → Service telegram-gateway:8080
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→ /bot/<slug> → secret_token check → handler dispatch → Bot API sendMessage
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```
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## Routes
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| Method | Path | Description |
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|--------|------------------|--------------------------------------------|
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| GET | `/healthz` | Liveness probe |
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| GET | `/readyz` | Readiness probe |
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| POST | `/bot/{slug}` | Telegram webhook entry (validates secret) |
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## Local dev
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```bash
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# 1. Provide a config + env
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export BOT_FACTORY_TOKEN='8737289837:…' # from @BotFather
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export BOT_FACTORY_SECRET=$(openssl rand -hex 32)
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# 2. Run
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make run # uses bots.example.yaml
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# 3. Smoke a webhook
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curl -X POST -H "X-Telegram-Bot-Api-Secret-Token: $BOT_FACTORY_SECRET" \
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-H 'Content-Type: application/json' \
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-d '{"update_id":1,"message":{"chat":{"id":<your-chat-id>},"text":"hi"}}' \
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http://localhost:8080/bot/factory
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```
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## Set / delete webhook
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```bash
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# Once the gateway is reachable at https://tg.arcodange.fr:
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export BOT_FACTORY_TOKEN=…
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export BOT_FACTORY_SECRET=…
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make setwebhook SLUG=factory BASE_URL=https://tg.arcodange.fr
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make deletewebhook SLUG=factory
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```
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## Configuration
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- **Routing** (non-secret): YAML at `$CONFIG_PATH` (default
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`/etc/telegram-gateway/bots.yaml`, mounted from a ConfigMap in cluster).
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- **Secrets**: per-bot env vars `BOT_<UPPER_SLUG>_TOKEN`,
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`BOT_<UPPER_SLUG>_SECRET`. Sourced from Vault path
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`kvv2/telegram-gateway/config` via Vault Secrets Operator.
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## Cluster deploy
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- Image: `gitea.arcodange.lab/arcodange/telegram-gateway:<tag>`
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- Helm chart: `chart/`
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- ArgoCD app: `telegram-gateway` (in `factory/argocd/values.yaml`)
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- Public URL: `https://tg.arcodange.fr` (Cloudflare déjà configuré pour
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router `*.arcodange.fr` vers le home lab → Traefik route par Host)
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- Secrets Phase 1 : `kubectl create secret generic telegram-gateway-bots …`
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(sans Vault). Migration vers Vault Secrets Operator en Phase 2+ via
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`vault.enabled: true` dans `chart/values.yaml`.
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Voir `DEPLOY.md` pour la procédure end-to-end.
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## Layout
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```
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.
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├── main.go # bootstrap, subcommand dispatch
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├── server.go # HTTP routes
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├── middleware.go # secret validation, recover, access log
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├── handlers.go # Handler interface + Registry
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├── handler_echo.go # echo handler
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├── telegram.go # Telegram Bot API client
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├── telegram_types.go # Update / Message structs
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├── config.go # YAML routing config + per-bot env merge
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├── setwebhook.go # CLI subcommands (setwebhook / deletewebhook)
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├── chart/ # Helm chart
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└── .gitea/workflows/ # CI: docker build → gitea registry
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```
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