What's the Scala way to implement a retry-able call like this one?

Question

Still the newbie in Scala and I\'m now looking for a way to implement the following code on it:

@Override
public void store(InputStream source, String destin         


        

Answer 1

There is a method in scalaz.concurrent.Task[T]: http://docs.typelevel.org/api/scalaz/nightly/#scalaz.concurrent.Task

def retry(delays: Seq[Duration], p: (Throwable) ⇒ Boolean = _.isInstanceOf[Exception]): Task[T]

Given a Task[T], you can create a new Task[T] which will retry a certain number of times, where the delay between retries is defined by the delays parameter. e.g.:

// Task.delay will lazily execute the supplied function when run
val myTask: Task[String] =
  Task.delay(???)

// Retry four times if myTask throws java.lang.Exception when run
val retryTask: Task[String] =
  myTask.retry(Seq(20.millis, 50.millis, 100.millis, 5.seconds))

// Run the Task on the current thread to get the result
val result: String = retryTask.run