monix.reactive.internal.builders.ReactiveObservable.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
import monix.execution.rstreams.SingleAssignSubscription
import monix.reactive.Observable
import monix.reactive.observers.Subscriber
import org.reactivestreams
import org.reactivestreams.{Subscription, Publisher => RPublisher}
/** Implementation for `Observable.fromReactivePublisher` */
private[reactive] final class ReactiveObservable[A](publisher: RPublisher[A], requestCount: Int) extends Observable[A] {
def unsafeSubscribeFn(subscriber: Subscriber[A]): Cancelable = {
val subscription = SingleAssignSubscription()
val sub =
if (requestCount > 0) subscriber.toReactive(requestCount)
else subscriber.toReactive
publisher.subscribe(new reactivestreams.Subscriber[A] {
def onNext(t: A): Unit = sub.onNext(t)
def onComplete(): Unit = sub.onComplete()
def onError(t: Throwable): Unit = sub.onError(t)
def onSubscribe(s: Subscription): Unit = {
subscription := s
sub.onSubscribe(s)
}
})
subscription
}
}