Play Framework/Scala example source code file (NettyFuture.scala)

This example Play Framework source code file (NettyFuture.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Play Framework (and Scala) source code examples by using tags.

All credit for the original source code belongs to Play Framework; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Play Framework tags/keywords

api, channelfuture, channelfuturelistener, concurrent, core, future, library, netty, nettyfuture, play, play framework, promise, runtimeexception, time, toscala

The NettyFuture.scala Play Framework example source code

/*
 * Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
 */
package play.core.server.netty

import org.jboss.netty.channel.{ Channel, ChannelFuture, ChannelFutureListener }
import play.api.libs.concurrent._
import scala.concurrent.{ Future, Promise, ExecutionContext, CanAwait }
import scala.concurrent.duration.Duration
import java.util.concurrent.TimeUnit
import scala.util._

/**
 * Allows a NettyFuture to be convert to a Scala Future
 */
object NettyFuture {

  implicit class ToScala(channelFuture: ChannelFuture) {

    def toScala: Future[Channel] = {
      val promise = Promise[Channel]()

      channelFuture.addListener(new ChannelFutureListener {
        def operationComplete(future: ChannelFuture) = {
          if (future.isSuccess) {
            promise.success(future.getChannel)
          } else if (future.isCancelled) {
            promise.failure(new RuntimeException("Future cancelled"))
          } else {
            promise.failure(future.getCause)
          }
        }
      })
      promise.future
    }
  }
}