• Home
• be.wegenenverkeer
• akka-persistence-pg_2.11
• 0.14.0
• source code
• DeliveryBuffer.scala

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

akka.persistence.pg.query.scaladsl.DeliveryBuffer.scala Maven / Gradle / Ivy

package akka.persistence.pg.query.scaladsl

import akka.actor.ActorLogging
import akka.stream.actor.ActorPublisher

/**
  * INTERNAL API
  */
private[akka] trait DeliveryBuffer[T] {
  _: ActorPublisher[T] with ActorLogging =>

  var buf = Vector.empty[T]

  def deliverBuf(): Unit =
    if (buf.nonEmpty && totalDemand > 0) {
      if (buf.size == 1) {
        // optimize for this common case
        onNextWithLogging(buf.head)
        buf = Vector.empty
      } else if (totalDemand <= Int.MaxValue) {
        val (use, keep) = buf.splitAt(totalDemand.toInt)
        buf = keep
        use foreach onNextWithLogging
      } else {
        buf foreach onNextWithLogging
        buf = Vector.empty
      }
    }

  def onNextWithLogging(element: T): Unit = {
    log.debug(s"sending event $element")
    onNext(element)
  }
}