NowJS server event notifications

Question

I'm trying to implement a system where an external server (SuperFeedr) sends a request to my server (running Node) and my server processes, then sends that data straight to the client in realtime using NowJS.

Problem is, I cannot access the everyonce namespace in my server functions since it has to be initialized after the listen() function is called which has to happen after the functions are declared. So basically:

Needs:

NowJS->Listen->Server functions->everyone variable->NowJS

Seems I have a dependency loop and I have no idea how to resolve it.

Answer 1

Start all of them independently. When one of them is up, put a reference to it into a shared parent scope. When e.g. the server receives a notification, just drop it if nowjs isn't ready yet. Simplified example:

var a, b;
initializeA(function(a_) {
  a = a_
  a.on('request', function(request, response) {
    if (!b) {
      // B isn't ready yet, drop the request
      return response.end()
    }
    // ...
  })
})
initializeB(function(b_) {
  b = b_
  b.on('request', function(request, response) {
    if (!a) {
      // A isn't ready yet, drop the request
      return response.end()
    }
    // ...
  })
})