monix.java8.eval.package.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.java8
import java.util.concurrent.{CancellationException, CompletableFuture, CompletionException}
import java.util.function.BiFunction
import monix.eval.Task
import monix.execution.{Cancelable, Scheduler}
import scala.util.{Failure, Success}
/**
* DEPRECATED — switch to Scala 2.12+ and [[monix.eval.Task.from Task.from]].
*/
package object eval {
/**
* DEPRECATED — switch to Scala 2.12+ and [[monix.eval.Task.from Task.from]].
*/
@deprecated("Switch to Scala 2.12+ and Task.from", "3.0.0")
implicit class TaskCompanionUtils(val source: Task.type) extends AnyVal {
/**
* DEPRECATED — switch to Scala 2.12+ and [[monix.eval.Task.from Task.from]].
*/
@deprecated("Switch to Scala 2.12+ and Task.from", "3.0.0")
def fromCompletableFuture[A](cf: CompletableFuture[A]): Task[A] = {
// $COVERAGE-OFF$
convert(cf)
// $COVERAGE-OFF$
}
/**
* DEPRECATED — switch to Scala 2.12+ and [[monix.eval.Task.from Task.from]].
*/
@deprecated("Switch to Scala 2.12+ and Task.from", "3.0.0")
def deferCompletableFutureAction[A](f: Scheduler => CompletableFuture[A]): Task[A] = {
// $COVERAGE-OFF$
Task.deferAction { sc =>
convert(f(sc))
}
// $COVERAGE-ON$
}
}
private def convert[A](cf: CompletableFuture[A]): Task[A] = {
// $COVERAGE-OFF$
Task.create((_, cb) => {
cf.handle[Unit](new BiFunction[A, Throwable, Unit] {
override def apply(result: A, err: Throwable): Unit = {
err match {
case null =>
cb(Success(result))
case _: CancellationException =>
()
case ex: CompletionException if ex.getCause ne null =>
cb(Failure(ex.getCause))
case ex =>
cb(Failure(ex))
}
}
})
Cancelable({ () => cf.cancel(true); () })
})
// $COVERAGE-ON$
}
}