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scriba-graphql

v1.1.1

Published

Zero-config multi-tenant and global GraphQL for Express

Readme

Scriba GraphQL

Zero-config GraphQL multi-tenant e global para Express, gerado dinamicamente a partir do Scriba SDK.

Este projeto cria schemas GraphQL automaticamente com base nos tenants, tabelas, campos e relações definidos no Scriba — sem precisar escrever resolvers manualmente.


✨ Features

  • 🚀 Zero configuração: schemas GraphQL gerados automaticamente
  • 🧩 Multi-tenant por request (header, subdomínio, etc.)
  • 🌍 Schema global para acessar todos os tenants
  • 🔍 Filtros avançados (eq, ne, gt, lt, in, contains, etc.)
  • 📄 Paginação (limit e offset)
  • 🔗 Relações automáticas
  • 🧠 Cache de schema com LRU
  • 🧪 GraphiQL habilitado

📦 Instalação

npm install scriba-graphql

Dependências principais:

  • express
  • graphql
  • express-graphql
  • scriba-sdk

🚀 Uso Básico

1️⃣ Criando a instância do Scriba

const Scriba = require("scriba-sdk").default

const scriba = new Scriba([
  { id: "ipsum", path: "./database/ipsum.db", schema: "./schema.prisma" },
  { id: "llms", path: "./database/llms.db", schema: "./llms.prisma" }
])

2️⃣ GraphQL Multi-Tenant

Cada request resolve automaticamente o tenant com base no header (ou outra lógica).

const express = require("express")
const { createMultiTenantGraphQL } = require("scriba-graphql")

const app = express()

app.use(
  "/graphql",
  createMultiTenantGraphQL({
    tenantResolver: req => req.headers["x-tenant-id"],
    scribaInstance: scriba
  })
)

app.listen(3000, () =>
  console.log("GraphQL em http://localhost:3000/graphql")
)

🔑 Header esperado

x-tenant-id: ipsum

3️⃣ GraphQL Global (todos os tenants)

const { createGlobalGraphQL } = require("scriba-graphql")

app.use(
  "/global",
  createGlobalGraphQL({ scribaInstance: scriba })
)

Acesse:

http://localhost:3000/global

🧠 Estrutura do Schema

Tenant

Cada tenant vira um namespace no GraphQL:

query {
  ipsum {
    users {
      id
      name
      age
    }
  }
}

Queries automáticas

Para cada tabela:

  • singular → retorna 1 registro
  • plural → retorna lista
query {
  ipsum {
    user(where: { id: { eq: 1 } }) {
      name
    }

    users(
      where: { age: { gte: 18 } }
      limit: 10
      offset: 0
    ) {
      id
      name
      age
    }
  }
}

🔍 Filtros disponíveis

Tipos numéricos

  • eq, ne
  • gt, gte
  • lt, lte
  • in, nin

Strings / IDs

  • eq, ne
  • contains
  • startsWith
  • endsWith
  • in, nin

🔗 Relações

Relações definidas no Scriba são expostas automaticamente:

query {
  ipsum {
    users {
      name
      invoices {
        total
      }
    }
  }
}

⚙️ Cache de Schema

Os schemas são:

  • Gerados uma única vez por tenant
  • Armazenados em LRU Cache
  • Evitam custo de reconstrução por request

🧪 Desenvolvimento

node test.js

Depois acesse:

  • http://localhost:3000/graphql
  • http://localhost:3000/global

📁 Estrutura do Projeto

.
├─ index.js          # Core GraphQL generator
├─ test.js           # Exemplo de uso
├─ package.json
├─ johankit.yml
└─ database/

📌 Requisitos

  • Node.js ≥ 16
  • Scriba SDK ≥ 1.0
  • Express ≥ 4

🛠️ Roadmap (ideias)

  • Mutations automáticas (create/update/delete)
  • Autorização por tenant / tabela
  • Subscriptions
  • Custom scalars
  • Hooks de lifecycle

📄 Licença

MIT © João Santana