monifu.reactive.internals.operators.delaySubscription.scala Maven / Gradle / Ivy
/*
* Copyright (c) 2014-2015 by its authors. Some rights reserved.
* See the project homepage at: http://www.monifu.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package monifu.reactive.internals.operators
import monifu.reactive.Observable
import scala.concurrent.duration.FiniteDuration
import scala.concurrent.{Promise, Future}
import scala.util.{Failure, Success}
private[reactive] object delaySubscription {
/**
* Implementation for [[Observable.delaySubscription]].
*/
def onFuture[T](source: Observable[T], future: Future[_]): Observable[T] =
Observable.create[T] { subscriber =>
implicit val s = subscriber.scheduler
val observer = subscriber.observer
future.onComplete {
case Success(_) =>
source.onSubscribe(observer)
case Failure(ex) =>
observer.onError(ex)
}
}
/**
* Implementation for [[Observable.delaySubscription]].
*/
def onTimespan[T](source: Observable[T], timespan: FiniteDuration): Observable[T] =
Observable.create { subscriber =>
implicit val s = subscriber.scheduler
val underlying = source.delaySubscription {
val p = Promise[Unit]()
s.scheduleOnce(timespan)(p.success(()))
p.future
}
underlying.onSubscribe(subscriber)
}
}