com.twitter.bijection.twitter_util.ScalaFuturePool.scala Maven / Gradle / Ivy

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bijection-util

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package com.twitter.bijection.twitter_util

import scala.concurrent.ExecutionContext
import com.twitter.util.{ FuturePool, Future, Try, Return, Throw, Promise }

/**
 * FuturePool adapter for ExecutionContext
 *
 * @author Moses Nakamura
 */
class ScalaFuturePool(context: ExecutionContext) extends FuturePool {
  override def apply[A](f: => A): Future[A] = {
    val p = Promise[A]()
    val runnable = new Runnable() {
      override def run(): Unit = Try(f) match {
        case Return(value) => p.setValue(value)
        case Throw(e) => {
          context.reportFailure(e)
          p.setException(e)
        }
      }
    }
    context.execute(runnable)
    p
  }
}