io.micronaut.http.netty.reactive.CancelledSubscriber Maven / Gradle / Ivy
/*
* Copyright 2017-2020 original authors
*
* 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
*
* https://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.micronaut.http.netty.reactive;
import io.micronaut.core.annotation.Internal;
import org.reactivestreams.Subscriber;
import org.reactivestreams.Subscription;
/**
* A cancelled subscriber.
*
* @param The subscriber type
* @author Graeme Rocher
* @since 1.0
*/
@Internal
public final class CancelledSubscriber implements Subscriber {
@Override
public void onSubscribe(Subscription subscription) {
if (subscription == null) {
throw new NullPointerException("Null subscription");
} else {
subscription.cancel();
}
}
@Override
public void onNext(T t) {
// ignore message
}
@Override
public void onError(Throwable error) {
if (error == null) {
throw new NullPointerException("Null error published");
}
}
@Override
public void onComplete() {
// ignore
}
}