/*
* Copyright (c) 2011-2017 Pivotal Software Inc, All Rights Reserved.
*
* 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 reactor.core.publisher;
/**
* Blocks until the upstream signals its first value or completes.
*
* @param <T> the value type
* @see <a href="https://github.com/reactor/reactive-streams-commons">https://github.com/reactor/reactive-streams-commons</a>
*/
final class
BlockingFirstSubscriber<T> extends
BlockingSingleSubscriber<T> {
@
Override
public void
onNext(T
t) {
if (
value == null) {
value =
t;
dispose();
countDown();
}
}
@
Override
public void
onError(
Throwable t) {
if (
value == null) {
error =
t;
}
countDown();
}
}