import { Callout } from '@theguild/components'

# Integration with Hapi

[Hapi](https://hapi.dev) allows you to build powerful, scalable applications, with minimal overhead
and full out-of-the-box functionality.

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

## Example

```ts
import http from 'node:http'
import { Readable } from 'node:stream'
import { createGatewayRuntime } from '@graphql-hive/gateway-runtime'
import Hapi from '@hapi/hapi'
import { schema } from './my-graphql-schema'

interface ServerContext {
  req: Hapi.Request
  h: Hapi.ResponseToolkit
}

const hiveGateway = createGatewayRuntime<ServerContext>(/* Your configuration */)

const server = Hapi.server({ port: 4000 })

server.route({
  method: '*',
  path: hiveGateway.graphqlEndpoint,
  options: {
    payload: {
      // let hiveGateway handle the parsing
      output: 'stream'
    }
  },
  handler: async (req, h) => {
    const { status, headers, body } = await hiveGateway.handleNodeRequestAndResponse(
      req.raw.req,
      req.raw.res,
      {
        req,
        h
      }
    )

    const res = h.response(
      Readable.from(body, {
        // hapi needs the stream not to be in object mode
        objectMode: false
      })
    )

    for (const [key, val] of headers) {
      res.header(key, val)
    }

    return res.code(status)
  }
})

server.start()
```

Hive Gateway should now be available at
[http://localhost:4000/graphql](http://localhost:4000/graphql).
