Discussion on: Getting Started with Apollo Federation and Gateway

[Mandi Wise]

Automatic reloading of the gateway can be an issue, even with wait-on in place. You may want to look at some experimental features of Apollo Gateway (github.com/apollographql/federatio...) to help facilitate this, or look into managed federation instead.

[kieronjmckenna]

Easy solution to the development problem I referenced is to use wait-on in index.js before building the gateway rather than in the command line.

This way when nodemon restarts the gateway server it waits for the other services on every restart, not just the first time we run the command.

Thought I'd mention this for anyone who ran into the same problem.

[dante]

Hi, can you give an example on how you solved this? I'm facing the same issue but can't make it work.

[Ryan Mercadante]

import waitOn from 'wait-on'
import app from './config/app'
import server from './config/apollo'

const port = process.env.PORT

const options = {
  resources: ['tcp:4001'],
}

waitOn(options)
  .then(() => {
    server.applyMiddleware({ app })
    app.listen({ port }, () => {
      console.log(
        `Server ready at http://localhost:${port}${server.graphqlPath}`
      )
    })
  })
  .catch((err) => {
    console.error('ERR:', err)
  })

Give this a try!