/**
* Copyright 2016 Netflix, Inc.
*
* 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 rx.internal.operators;
import java.util.concurrent.*;
import rx.*;
import rx.exceptions.
Exceptions;
import rx.subscriptions.
Subscriptions;
/**
* Wait and emit the value of the Future.
*
* @param <T> the value type
*/
public final class
SingleFromFuture<T> implements
Single.
OnSubscribe<T> {
final
Future<? extends T>
future;
final long
timeout;
final
TimeUnit unit;
public
SingleFromFuture(
Future<? extends T>
future, long
timeout,
TimeUnit unit) {
this.
future =
future;
this.
timeout =
timeout;
this.
unit =
unit;
}
@
Override
public void
call(
SingleSubscriber<? super T>
t) {
Future<? extends T>
f =
future;
t.
add(
Subscriptions.
from(
f));
T
v;
try {
if (
timeout == 0L) {
v =
f.
get();
} else {
v =
f.
get(
timeout,
unit);
}
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
t.
onError(
ex);
return;
}
t.
onSuccess(
v);
}
}