Server Implmentation

We’ll start with JavaScript. Follow along in the example repo here: https://github.com/backstopmedia/gRPC-book-example/blob/master/examples/nodejs/server.js. We need some generic List and some Get functions:

JavaScript

// generic handler for Get* RPCs
const getHandler = (id, recordName, dataName) => {
  const record = data[dataName].find(r => r.id === id)
  if (record) {
    return {[recordName]: record}
  } else {
    return Promise.reject(new NotFoundError(`That ${recordName} was not found.`))
  }
}

// generic handler for most List* RPCs
const listHandler = (recordName) => ({[recordName]: data[recordName]})

Now, we’ll setup a demo event-emitter for fake Starship events:

const starshipTracker = emitonoff()

// fake ship events are happening!
setInterval(() => {
  const action = StarshipActions[ (StarshipActions.length * Math.random()) | 0 ]
  const starship = data.starships[ (data.starships.length * Math.random()) | 0 ]
  starshipTracker...