# MAC — MBM AI Cloud · Build Progress

**Project:** Self-hosted AI inference platform for MBM University Jodhpur  
**Stack:** FastAPI · SvelteKit · PostgreSQL · Redis · vLLM · Nginx · Docker  
**Repo:** `D:\mac2` (push to `github.com/mbmuniversity2026/MAC`)

---

## ✅ Completed

### Session 1 — Backend Foundation

#### Database / Migrations
- Alembic wired — `alembic/env.py` imports all models
- `20260426_0001_initial_schema.py` — full initial schema capture
- `20260427_0002_session1_tables.py` — feature_flags, system_config, branches, sections, cluster_heartbeats, shared_files, file_downloads, video_projects, video_jobs + user columns

#### New Models (`mac/models/`)
| File | Tables |
|------|--------|
| `feature_flag.py` | `FeatureFlag` |
| `academic.py` | `Branch`, `Section` |
| `cluster.py` | `ClusterNode`, `ClusterHeartbeat` |
| `file_share.py` | `SharedFile`, `FileDownload` |
| `video.py` | `VideoProject`, `VideoJob` |
| `system_config.py` | `SystemConfig` |

#### New Routers (`mac/routers/`)
| File | Endpoints |
|------|-----------|
| `features.py` | GET /features/status, PATCH /admin/features/{key} |
| `hardware.py` | GET /hardware/local, /hardware/recommendations |
| `network.py` | GET /network/local-ip, /network/discover |
| `system.py` | GET /system/version, /system/update-status, POST /admin/system/restart |
| `setup.py` | GET /setup/status, POST /setup/create-admin, GET /setup/recovery |

#### New Services (`mac/services/`)
- `feature_seeder.py` — seeds default flags on startup
- `setup_service.py` — JWT secret management via system_config
- `token_blacklist_service.py` — JWT blacklist via Redis (TTL-matched)

#### Security Improvements
- JWT `jti` claim added to all access tokens (`mac/utils/security.py`)
- `auth_middleware.py` checks blacklist on every request
- Logout blacklists current access token + revokes refresh tokens

---

### Session 2 — SvelteKit Frontend

**Full PWA frontend at `frontend/`:**

| File | Description |
|------|-------------|
| `src/app.html` | PWA shell, Google Fonts, SW registration |
| `src/app.css` | Full design system — dark theme, mac-blue palette, all component classes |
| `src/lib/api.js` | Complete API client (auth, query, models, usage, quota, keys, features, hardware, network, system, users, guardrails, rag, notifications, cluster, academic, files) |
| `src/lib/stores.js` | authStore, chatStore, setupStore, featureStore, toast, sidebarOpen |
| `src/lib/i18n.js` | 19 Indian languages with lazy loading + RTL support |
| `src/lib/components/ParticleCanvas.svelte` | Physics particle animation (login/splash) |
| `src/lib/components/Sidebar.svelte` | Navigation sidebar with all routes |
| `src/lib/components/Toast.svelte` | Toast notification component |
| `src/lib/components/ChatMessage.svelte` | Chat bubble with markdown rendering |
| `src/routes/+layout.svelte` | Auth guard, setup check, shell layout |
| `src/routes/+page.svelte` | Landing / redirect |
| `src/routes/login/+page.svelte` | Animated login page with particle canvas |
| `src/routes/setup/+page.svelte` | First-run admin setup wizard |
| `src/routes/chat/+page.svelte` | SSE streaming chat with model picker |
| `src/routes/dashboard/+page.svelte` | Activity heatmap, quota rings, model distribution |
| `src/routes/admin/+page.svelte` | Admin panel: Users, Models, Features, Hardware, System tabs |
| `src/routes/cluster/+page.svelte` | Cluster management: node list, detail, actions, history chart, enrollment tokens |
| `src/routes/keys/+page.svelte` | API key management (generate, copy, revoke) |
| `src/routes/settings/+page.svelte` | Profile, change password, language picker |
| `src/routes/notifications/+page.svelte` | Notification list with mark-read |
| `src/routes/rag/+page.svelte` | RAG document upload (drag-and-drop) + list |

**Static assets:**
- `static/manifest.json` — PWA manifest with shortcuts
- `static/sw.js` — Service worker (cache-first shell, network-first API, SSE passthrough)

**Infrastructure:**
- `nginx/nginx.conf` — HTTP server (production)
- `nginx/nginx.https.conf` — HTTPS server with TLS, HSTS, WebSocket proxy
- `docker-compose.yml` — Master node: MAC API + vLLM + Postgres + Redis + Nginx + Qdrant + SearXNG
- `docker-compose.worker.yml` — Worker node: vLLM + optional Jupyter + worker-agent

---

### Session 2 — Distributed Cluster Backend

#### Cluster Architecture
```
Master node (this machine)
  ├── MAC API (FastAPI)          — receives all user requests
  ├── PostgreSQL                 — DB (master-only)
  ├── Redis                      — cache, rate limiting, JWT blacklist
  ├── Nginx                      — reverse proxy + frontend
  ├── Qdrant                     — vector DB for RAG
  └── SearXNG                    — web search

Worker nodes (any PC on same network)
  ├── vLLM                       — GPU inference (OpenAI-compatible)
  ├── Jupyter kernel gateway     — notebook execution (optional)
  └── worker_agent.py            — heartbeat + registration agent
```

#### Cluster Services
- `mac/services/load_balancer.py` — score-based routing: `gpu_util×0.5 + vram_ratio×0.3`, 30s stale threshold
- `mac/services/llm_service.py` — updated `_resolve_model_cluster` to use load balancer before local vLLM
- `mac/models/node.py` — `WorkerNode` + `NodeModelDeployment` + `EnrollmentToken`; added `notebook_port`, `tags`
- `mac/models/cluster.py` — `ClusterHeartbeat` time-series

#### Cluster Router (`mac/routers/cluster.py`)
| Endpoint | Description |
|----------|-------------|
| `POST /cluster/enroll-token` | Admin generates one-time enrollment token |
| `GET /cluster/enroll-tokens` | List all tokens |
| `POST /cluster/register` | Worker self-registers (no JWT — uses enrollment token) |
| `POST /cluster/heartbeat` | Worker sends heartbeat every 10s |
| `GET /cluster/nodes` | List all nodes with live health |
| `GET /cluster/nodes/{id}` | Node detail with deployments |
| `POST /cluster/nodes/{id}/action` | approve / drain / reactivate / remove |
| `POST /cluster/nodes/{id}/deploy` | Register vLLM deployment on node |
| `DELETE /cluster/nodes/{id}/deploy/{dep_id}` | Remove deployment |
| `GET /cluster/nodes/{id}/history` | Heartbeat time-series (for charts) |

#### Worker Agent (`worker_agent.py`)
Standalone Python script for worker PCs:
- Reads `MAC_MASTER_URL`, `MAC_ENROLL_TOKEN`, `MAC_VLLM_PORT`, etc. from env
- Self-registers on startup via enrollment token
- Sends heartbeats every 10s with GPU/CPU/RAM metrics (via `pynvml` + `psutil`)
- Queries local vLLM `/v1/models` to report active models
- Handles stale/auth errors gracefully

#### Other New Routers
| File | Endpoints |
|------|-----------|
| `mac/routers/academic.py` | CRUD for branches and sections |
| `mac/routers/file_share.py` | Admin upload, user download, stats |

---

## 🔲 Remaining / Optional

| Item | Priority | Notes |
|------|----------|-------|
| Frontend PWA icons | Medium | `static/icon-192.png`, `static/icon-512.png`, `static/favicon.ico` — need actual PNG files |
| Frontend: refresh token flow | Medium | Silent JWT refresh in `api.js` before expiry |
| Multi-stage Dockerfile | Low | Stage 1: node build frontend; Stage 2: python + nginx |
| Feature flag wiring | Low | `feature_required("ai_chat")` on `/query/*`, etc. |
| HTTPS cert setup | Deployment | Use `nginx.https.conf` + Let's Encrypt / self-signed |
| `alembic/versions/0003` | When schema changes | Node notebook_port and tags columns |
| Video generation service | Future | `VideoProject` / `VideoJob` models exist, router not yet created |

---

## Deployment Quick-Start

### Master node
```bash
# 1. Build frontend
cd frontend && npm install && npm run build && cd ..

# 2. Configure environment
cp .env.example .env   # edit DB, Redis, model settings

# 3. Run DB migrations
docker compose up postgres -d
docker compose run --rm mac alembic upgrade head

# 4. Start all services
docker compose up -d
```

### Adding a worker node
```bash
# On the master — generate enrollment token
curl -X POST http://MASTER_IP:8000/api/v1/cluster/enroll-token \
  -H "Authorization: Bearer ADMIN_JWT" \
  -d '{"label":"Lab PC 1","expires_hours":24}'

# On the worker PC
MAC_MASTER_URL=http://MASTER_IP:8000 \
MAC_ENROLL_TOKEN=<token_from_above> \
MAC_VLLM_PORT=8001 \
docker compose -f docker-compose.worker.yml up -d

# Then approve the node in MAC admin panel → Cluster tab
```

### HTTPS (production)
```bash
# Place certs in nginx/ssl/
# Swap nginx config:
# In docker-compose.yml, change:
#   volumes: ./nginx/nginx.conf → ./nginx/nginx.https.conf
# Then restart nginx
```

---

*Last updated: 2026-04-27 — Session 2 complete*