Steedos Builder6 Internals

Builder6 Server Architecture & Configuration

Overview | 概述

Builder6 Server is a NestJS + Moleculer hybrid monorepo powering the Steedos platform. It uses Nx + Lerna for workspace management with 20+ specialized @builder6/* packages.

Technology Stack | 技术栈

• HTTP: NestJS 11 (Express adapter)
• Microservices: Moleculer 0.14
• Real-time: Socket.IO (HybridAdapter)
• Database: MongoDB via MongodbService
• Session/Cache: Redis (connect-redis + ioredis)
• Auth: JWT + session tokens via @builder6/core
• API Docs: Swagger at /api/v6
• Build: Nx 22 + Lerna 9 + Yarn 3.8

Monorepo Structure | 结构

builder6-server/
├── package.json
├── nx.json / lerna.json
└── packages/
    ├── server/          # @builder6/server — main entry
    ├── core/            # @builder6/core — auth, config, mongodb, plugins, filters, websockets
    ├── tables/          # @builder6/tables — data table CRUD with DataLoader
    ├── files/           # @builder6/files — file upload (local + S3)
    ├── pages/           # @builder6/pages — micro page management
    ├── email/           # @builder6/email — SMTP + queue
    ├── rooms/           # @builder6/rooms — real-time collaboration
    ├── moleculer/       # @builder6/moleculer — NestJS-Moleculer bridge
    ├── microservices/   # @builder6/microservices — service management
    ├── steedos/         # @builder6/steedos — Steedos metadata + ObjectQL
    ├── oidc/            # @builder6/oidc — OIDC client
    ├── onlyoffice/      # @builder6/onlyoffice — document editing
    ├── query-mongodb/   # @builder6/query-mongodb — DevExtreme query adapter
    └── cli/             # @builder6/cli — CLI tool

NestJS Module Tree

AppModule.forRoot() imports:

Bootstrap & Middleware

bootstrap()
  1. NestFactory.create(AppModule.forRoot({}))
  2. Redis cluster transport
  3. Logger + AllExceptionsFilter
  4. HybridAdapter (Socket.IO)
  5. CORS (all origins)
  6. Redis session store
  7. Swagger at /api/v6
  8. Middleware: cookieParser → JSON(50mb) → urlencoded(100mb) → compression
  9. Start microservices → listen on B6_PORT

Guards

Key Design Patterns

• Controller → Service → MongodbService: Standard NestJS layered architecture
• @InjectBroker(): Inject Moleculer broker into NestJS services
• DataLoader: Batch loading for lookup field resolution
• @builder6/query-mongodb: DevExtreme → MongoDB aggregation

Development Commands

yarn start:dev      # Hot reload
yarn start:debug    # Debug mode
yarn start:prod     # Production
yarn build          # Build all
yarn lint           # Lint

Configuration | 配置

Environment Variable Parsing | 环境变量解析

getEnvConfigs() in @builder6/core parses B6_* and STEEDOS_* env vars via dotenv-flow:

• Underscores become nested keys: B6_MONGO_URL → configService.get('mongo.url')
• "true"/"false" → boolean, numeric strings → numbers
• B6_ takes precedence over STEEDOS_

Steedos Compatibility Aliases | 兼容别名

All B6_* Variables

Server Core

Database & Cache

Authentication

File Storage

Plugin System

ConfigService Access

@Injectable()
export class MyService {
  constructor(private configService: ConfigService) {}
  example() {
    const mongoUrl = this.configService.get('mongo.url');
    const port = this.configService.get('port');
  }
}