ratelimit.scala

class ApiService [T] {
  // other code ...
  
  private def makeRequest(): Unit = {
    val now = LocalDateTime.now()
    var req: RequestQueueItem = null
    var foundValidRequest = false
    do {
      req = requestQueue.pollFirst()
      if (req == null) return
      foundValidRequest = req.startDeadline.forall(now.isBefore)
    } while(!foundValidRequest)
    
    // other code ...
  }
  
}