Integration with Koa

Koa is a new web framework designed by the team behind Express, which aims to be a smaller, more expressive, and more robust foundation for web applications and APIs.

Hive Gateway can be integrated easily as a route to the existing Koa application with a few lines of code.

So you can benefit middlewares written for Koa with Hive Gateway.

Example

import Koa from 'koa'
import { createGatewayRuntime } from '@graphql-hive/gateway'
 
const app = new Koa()
 
const gatewayRuntime = createGatewayRuntime<Koa.ParameterizedContext>()
 
// Bind Hive Gateway to `/graphql` endpoint
app.use(async ctx => {
  // Second parameter adds Koa's context into GraphQL Context
  const response = await gatewayRuntime.handleNodeRequestAndResponse(ctx.req, ctx.res, ctx)
 
  // Set status code
  ctx.status = response.status
 
  // Set headers
  response.headers.forEach((value, key) => {
    ctx.append(key, value)
  })
 
  if (response.body) {
    // Set body
    ctx.body = response.body
  }
})
 
app.listen(4000, () => {
  console.log(
    `Running a GraphQL API server at http://localhost:4000/${gatewayRuntime.graphqlEndpoint}`
  )
})

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