Promise Retry Pattern

keepGoing.coffee

doThisUntilItWorks = () ->
  doSomethingAsync().then (result) ->
    doSomething result
  , (reason) ->
    console.warn "Retrying"
    deferred = Q.deferred()

    setTimeout (->
      deferred.resolve(doThisUntilItWorks())
    ), retryDelay

    deferred.promise