Add admin UI
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241
docs/ADMIN_UI.md
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docs/ADMIN_UI.md
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# Admin Web UI
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The LLM Gateway includes a built-in admin web interface for monitoring and managing the gateway.
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## Features
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### System Information
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- Version and build details
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- Platform information (OS, architecture)
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- Go version
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- Server uptime
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- Git commit hash
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### Health Status
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- Overall system health
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- Individual health checks:
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- Server status
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- Provider availability
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- Conversation store connectivity
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### Provider Management
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- View all configured providers
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- See provider types (OpenAI, Anthropic, Google, etc.)
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- List models available for each provider
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- Monitor provider status
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### Configuration Viewing
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- View current gateway configuration
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- Secrets are automatically masked for security
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- Collapsible JSON view
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- Shows all config sections:
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- Server settings
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- Providers
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- Models
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- Authentication
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- Conversations
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- Logging
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- Rate limiting
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- Observability
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## Setup
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### Production Build
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1. **Enable admin UI in config:**
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```yaml
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admin:
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enabled: true
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```
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2. **Build frontend and backend together:**
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```bash
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make build-all
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```
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This command:
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- Builds the Vue 3 frontend
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- Copies frontend assets to `internal/admin/dist`
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- Embeds assets into the Go binary using `embed.FS`
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- Compiles the gateway with embedded admin UI
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3. **Run the gateway:**
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```bash
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./bin/llm-gateway --config config.yaml
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```
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4. **Access the admin UI:**
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Navigate to `http://localhost:8080/admin/`
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### Development Mode
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For faster frontend development with hot reload:
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**Terminal 1 - Backend:**
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```bash
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make dev-backend
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# or
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go run ./cmd/gateway --config config.yaml
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```
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**Terminal 2 - Frontend:**
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```bash
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make dev-frontend
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# or
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cd frontend/admin && npm run dev
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```
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The frontend dev server runs on `http://localhost:5173` and automatically proxies API requests to the backend on `http://localhost:8080`.
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## Architecture
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### Backend Components
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**Package:** `internal/admin/`
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- `server.go` - AdminServer struct and initialization
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- `handlers.go` - API endpoint handlers
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- `routes.go` - Route registration
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- `response.go` - JSON response helpers
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- `static.go` - Embedded frontend asset serving
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### API Endpoints
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All admin API endpoints are under `/admin/api/v1/`:
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- `GET /admin/api/v1/system/info` - System information
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- `GET /admin/api/v1/system/health` - Health checks
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- `GET /admin/api/v1/config` - Configuration (secrets masked)
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- `GET /admin/api/v1/providers` - Provider list and status
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### Frontend Components
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**Framework:** Vue 3 + TypeScript + Vite
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**Directory:** `frontend/admin/`
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```
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frontend/admin/
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├── src/
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│ ├── main.ts # App entry point
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│ ├── App.vue # Root component
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│ ├── router.ts # Vue Router config
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│ ├── api/
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│ │ ├── client.ts # Axios HTTP client
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│ │ ├── system.ts # System API calls
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│ │ ├── config.ts # Config API calls
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│ │ └── providers.ts # Providers API calls
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│ ├── components/ # Reusable components
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│ ├── views/
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│ │ └── Dashboard.vue # Main dashboard view
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│ └── types/
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│ └── api.ts # TypeScript type definitions
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├── index.html
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├── package.json
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├── vite.config.ts
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└── tsconfig.json
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```
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## Security Features
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### Secret Masking
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All sensitive data is automatically masked in API responses:
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- API keys show only first 4 and last 4 characters
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- Database connection strings are partially hidden
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- OAuth secrets are masked
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Example:
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```json
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{
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"api_key": "sk-p...xyz"
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}
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```
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### Authentication
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In MVP version, the admin UI inherits the gateway's existing authentication:
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- If `auth.enabled: true`, admin UI requires valid JWT token
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- If `auth.enabled: false`, admin UI is publicly accessible
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**Note:** Production deployments should always enable authentication.
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## Auto-Refresh
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The dashboard automatically refreshes data every 30 seconds to keep information current.
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## Browser Support
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The admin UI works in all modern browsers:
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- Chrome/Edge (recommended)
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- Firefox
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- Safari
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## Build Process
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### Frontend Build
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```bash
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cd frontend/admin
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npm install
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npm run build
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```
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Output: `frontend/admin/dist/`
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### Embedding in Go Binary
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The `internal/admin/static.go` file uses Go's `embed` directive:
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```go
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//go:embed all:dist
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var frontendAssets embed.FS
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```
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This embeds all files from the `dist` directory into the compiled binary, creating a single-file deployment artifact.
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### SPA Routing
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The admin UI is a Single Page Application (SPA). The static file server implements fallback to `index.html` for client-side routing, allowing Vue Router to handle navigation.
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## Troubleshooting
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### Admin UI shows 404
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- Ensure `admin.enabled: true` in config
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- Rebuild with `make build-all` to embed frontend assets
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- Check that `internal/admin/dist/` exists and contains built assets
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### API calls fail
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- Check that backend is running on port 8080
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- Verify CORS is not blocking requests (should not be an issue as UI is served from same origin)
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- Check browser console for errors
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### Frontend won't build
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- Ensure Node.js 18+ is installed: `node --version`
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- Install dependencies: `cd frontend/admin && npm install`
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- Check for npm errors in build output
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### Assets not loading
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- Verify Vite config has correct `base: '/admin/'`
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- Check that asset paths in `index.html` are correct
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- Ensure Go's embed is finding the dist folder
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## Future Enhancements
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Planned features for future releases:
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- [ ] RBAC with admin/viewer roles
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- [ ] Audit logging for all admin actions
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- [ ] Configuration editing (hot reload)
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- [ ] Provider management (add/edit/delete)
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- [ ] Model management
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- [ ] Circuit breaker reset controls
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- [ ] Real-time metrics and charts
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- [ ] Request/response inspection
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- [ ] Rate limit management
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286
docs/IMPLEMENTATION_SUMMARY.md
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docs/IMPLEMENTATION_SUMMARY.md
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# Admin UI Implementation Summary
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## Overview
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Successfully implemented a minimal viable product (MVP) of the Admin Web UI for the go-llm-gateway service. This provides a web-based dashboard for monitoring and viewing gateway configuration.
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## What Was Implemented
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### Backend (Go)
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**Package:** `internal/admin/`
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1. **server.go** - AdminServer struct with dependencies
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- Holds references to provider registry, conversation store, config, logger
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- Stores build info and start time for system metrics
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2. **handlers.go** - API endpoint handlers
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- `handleSystemInfo()` - Returns version, uptime, platform details
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- `handleSystemHealth()` - Health checks for server, providers, store
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- `handleConfig()` - Returns sanitized config (secrets masked)
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- `handleProviders()` - Lists all configured providers with models
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3. **routes.go** - Route registration
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- Registers all API endpoints under `/admin/api/v1/`
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- Registers static file handler for `/admin/` path
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4. **response.go** - JSON response helpers
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- Standard `APIResponse` wrapper
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- `writeSuccess()` and `writeError()` helpers
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5. **static.go** - Embedded frontend serving
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- Uses Go's `embed.FS` to bundle frontend assets
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- SPA fallback to index.html for client-side routing
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- Proper content-type detection and serving
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**Integration:** `cmd/gateway/main.go`
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- Creates AdminServer when `admin.enabled: true`
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- Registers admin routes with main mux
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- Uses existing auth middleware (no separate RBAC in MVP)
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**Configuration:** Added `AdminConfig` to `internal/config/config.go`
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```go
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type AdminConfig struct {
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Enabled bool `yaml:"enabled"`
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}
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```
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### Frontend (Vue 3 + TypeScript)
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**Directory:** `frontend/admin/`
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**Setup Files:**
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- `package.json` - Dependencies and build scripts
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- `vite.config.ts` - Vite build config with `/admin/` base path
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- `tsconfig.json` - TypeScript configuration
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- `index.html` - HTML entry point
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**Source Structure:**
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```
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src/
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├── main.ts # App initialization
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├── App.vue # Root component
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├── router.ts # Vue Router config
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├── api/
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│ ├── client.ts # Axios HTTP client with auth interceptor
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│ ├── system.ts # System API wrapper
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│ ├── config.ts # Config API wrapper
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│ └── providers.ts # Providers API wrapper
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├── views/
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│ └── Dashboard.vue # Main dashboard view
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└── types/
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└── api.ts # TypeScript type definitions
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```
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**Dashboard Features:**
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- System information card (version, uptime, platform)
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- Health status card with individual check badges
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- Providers card showing all providers and their models
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- Configuration viewer (collapsible JSON display)
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- Auto-refresh every 30 seconds
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- Responsive grid layout
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- Clean, professional styling
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### Build System
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**Makefile targets added:**
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```makefile
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frontend-install # Install npm dependencies
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frontend-build # Build frontend and copy to internal/admin/dist
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frontend-dev # Run Vite dev server
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build-all # Build both frontend and backend
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```
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**Build Process:**
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1. `npm run build` creates optimized production bundle in `frontend/admin/dist/`
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2. `cp -r frontend/admin/dist internal/admin/` copies assets to embed location
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3. Go's `//go:embed all:dist` directive embeds files into binary
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4. Single binary deployment with built-in admin UI
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### Documentation
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**Files Created:**
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- `docs/ADMIN_UI.md` - Complete admin UI documentation
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- `docs/IMPLEMENTATION_SUMMARY.md` - This file
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**Files Updated:**
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- `README.md` - Added admin UI section and usage instructions
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- `config.example.yaml` - Added admin config example
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## Files Created/Modified
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### New Files (Backend)
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- `internal/admin/server.go`
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- `internal/admin/handlers.go`
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- `internal/admin/routes.go`
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- `internal/admin/response.go`
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- `internal/admin/static.go`
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### New Files (Frontend)
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- `frontend/admin/package.json`
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- `frontend/admin/vite.config.ts`
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- `frontend/admin/tsconfig.json`
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- `frontend/admin/tsconfig.node.json`
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- `frontend/admin/index.html`
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- `frontend/admin/.gitignore`
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- `frontend/admin/src/main.ts`
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- `frontend/admin/src/App.vue`
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- `frontend/admin/src/router.ts`
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- `frontend/admin/src/api/client.ts`
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- `frontend/admin/src/api/system.ts`
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- `frontend/admin/src/api/config.ts`
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- `frontend/admin/src/api/providers.ts`
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- `frontend/admin/src/views/Dashboard.vue`
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- `frontend/admin/src/types/api.ts`
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- `frontend/admin/public/vite.svg`
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### Modified Files
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- `cmd/gateway/main.go` - Added AdminServer integration
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- `internal/config/config.go` - Added AdminConfig struct
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- `config.example.yaml` - Added admin section
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- `config.yaml` - Added admin.enabled: true
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- `Makefile` - Added frontend build targets
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- `README.md` - Added admin UI documentation
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- `.gitignore` - Added frontend build artifacts
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### Documentation
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- `docs/ADMIN_UI.md` - Full admin UI guide
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- `docs/IMPLEMENTATION_SUMMARY.md` - This summary
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## Testing
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All functionality verified:
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- ✅ System info endpoint returns correct data
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- ✅ Health endpoint shows all checks
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- ✅ Providers endpoint lists configured providers
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- ✅ Config endpoint masks secrets properly
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- ✅ Admin UI HTML served correctly
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- ✅ Static assets (JS, CSS, SVG) load properly
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- ✅ SPA routing works (fallback to index.html)
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## What Was Deferred
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Based on the MVP scope decision, these features were deferred to future releases:
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- RBAC (admin/viewer roles) - Currently uses existing auth only
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- Audit logging - No admin action logging in MVP
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- CSRF protection - Not needed for read-only endpoints
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- Configuration editing - Config is read-only
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- Provider management - Cannot add/edit/delete providers
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- Model management - Cannot modify model mappings
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- Circuit breaker controls - No manual reset capability
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- Comprehensive testing - Only basic smoke tests performed
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## How to Use
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### Production Deployment
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1. Enable in config:
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```yaml
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admin:
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enabled: true
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```
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2. Build:
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```bash
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make build-all
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```
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3. Run:
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```bash
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./bin/llm-gateway --config config.yaml
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```
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4. Access: `http://localhost:8080/admin/`
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### Development
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**Backend:**
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```bash
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make dev-backend
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```
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**Frontend:**
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```bash
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make dev-frontend
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```
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Frontend dev server on `http://localhost:5173` proxies API to backend.
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## Architecture Decisions
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### Why Separate AdminServer?
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Created a new `AdminServer` struct instead of extending `GatewayServer` to:
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- Maintain clean separation of concerns
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- Allow independent evolution of admin vs gateway features
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- Support different RBAC requirements (future)
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- Simplify testing and maintenance
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### Why Vue 3?
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Chosen for:
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- Modern, lightweight framework
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- Excellent TypeScript support
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- Simple learning curve
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- Good balance of features vs bundle size
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- Active ecosystem and community
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### Why Embed Assets?
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Using Go's `embed.FS` provides:
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- Single binary deployment
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- No external dependencies at runtime
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- Simpler ops (no separate frontend hosting)
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- Version consistency (frontend matches backend)
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### Why MVP Approach?
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Three-day timeline required focus on core features:
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- Essential monitoring capabilities
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- Foundation for future enhancements
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- Working end-to-end implementation
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- Proof of concept for architecture
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## Success Metrics
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✅ All planned MVP features implemented
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✅ Clean, maintainable code structure
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✅ Comprehensive documentation
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✅ Working build and deployment process
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✅ Ready for future enhancements
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## Next Steps
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When expanding beyond MVP, consider implementing:
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1. **Phase 2: Configuration Management**
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- Config editing UI
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- Hot reload support
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- Validation and error handling
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- Rollback capability
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2. **Phase 3: RBAC & Security**
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- Admin/viewer role separation
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- Audit logging for all actions
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- CSRF protection for mutations
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- Session management
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3. **Phase 4: Advanced Features**
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- Provider add/edit/delete
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- Model management UI
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- Circuit breaker controls
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- Real-time metrics dashboard
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- Request/response inspection
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- Rate limit configuration
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## Total Implementation Time
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Estimated: 2-3 days (MVP scope)
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- Day 1: Backend API and infrastructure (4-6 hours)
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- Day 2: Frontend development (4-6 hours)
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- Day 3: Integration, testing, documentation (2-4 hours)
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## Conclusion
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Successfully delivered a working Admin Web UI MVP that provides essential monitoring and configuration viewing capabilities. The implementation follows Go and Vue.js best practices, includes comprehensive documentation, and establishes a solid foundation for future enhancements.
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2445
docs/admin-ui-spec.md
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2445
docs/admin-ui-spec.md
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user