/**
* Copyright (c) 2016-present, RxJava Contributors.
*
* 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 io.reactivex.internal.operators.observable;
import java.util.concurrent.*;
import io.reactivex.*;
import io.reactivex.exceptions.Exceptions;
import io.reactivex.internal.functions.ObjectHelper;
import io.reactivex.internal.observers.DeferredScalarDisposable;
public final class ObservableFromFuture<T> extends Observable<T> {
final Future<? extends T> future;
final long timeout;
final TimeUnitunit;
public ObservableFromFuture(Future<? extends T> future, long timeout, TimeUnitunit) {
this.future = future;
this.timeout = timeout;
this.unit = unit;
}
@Override
public void subscribeActual(Observer<? super T> observer) {
DeferredScalarDisposable<T> d = new DeferredScalarDisposable<T>(observer);
observer.onSubscribe(d);
if (!d.isDisposed()) {
T v;
try {
v = ObjectHelper.requireNonNull(unit != null ? future.get(timeout, unit) : future.get(), "Future returned null");
} catch (Throwableex) {
Exceptions.throwIfFatal(ex);
if (!d.isDisposed()) {
observer.onError(ex);
}
return;
}
d.complete(v);
}
}
}