monix.reactive.internal.builders.CreateObservable.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 monix.execution.{Cancelable, ChannelType}
import scala.util.control.NonFatal
import monix.reactive.observers.{BufferedSubscriber, Subscriber}
import monix.reactive.{Observable, OverflowStrategy}
/** Implementation for [[monix.reactive.Observable.create]]. */
private[reactive] final class CreateObservable[+A](
overflowStrategy: OverflowStrategy.Synchronous[A],
producerType: ChannelType.ProducerSide,
f: Subscriber.Sync[A] => Cancelable)
extends Observable[A] {
def unsafeSubscribeFn(subscriber: Subscriber[A]): Cancelable = {
val out = BufferedSubscriber.synchronous(subscriber, overflowStrategy, producerType)
try f(out)
catch {
case ex if NonFatal(ex) =>
subscriber.scheduler.reportFailure(ex)
Cancelable.empty
}
}
}