monix.reactive.internal.builders.ExecuteWithModelObservable.scala Maven / Gradle / Ivy
/*
* Copyright (c) 2014-2020 by The Monix Project Developers.
* See the project homepage at: https://monix.io
*
* 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 monix.reactive.internal.builders
import scala.util.control.NonFatal
import monix.execution.{Ack, Cancelable, ExecutionModel}
import monix.reactive.Observable
import monix.reactive.observers.Subscriber
import scala.concurrent.Future
private[reactive] final class ExecuteWithModelObservable[A](source: Observable[A], em: ExecutionModel)
extends Observable[A] {
override def unsafeSubscribeFn(out: Subscriber[A]): Cancelable = {
var streamErrors = true
try {
val newS = out.scheduler.withExecutionModel(em)
streamErrors = false
source.unsafeSubscribeFn(new Subscriber[A] {
implicit val scheduler = newS
def onError(ex: Throwable): Unit = out.onError(ex)
def onComplete(): Unit = out.onComplete()
def onNext(elem: A): Future[Ack] = out.onNext(elem)
})
} catch {
case ex if NonFatal(ex) =>
if (streamErrors) out.onError(ex)
else out.scheduler.reportFailure(ex)
Cancelable.empty
}
}
}