/*
 * 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
 *
 *       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 reactor.core.publisher;

import java.time.Duration;
import java.util.Objects;

import reactor.core.CoreSubscriber;
import reactor.core.Exceptions;
import reactor.core.Fuseable;


Emits a constant or generated Throwable instance to Subscribers.
Type parameters:
  • <T> – the value type
See Also:
/** * Emits a constant or generated Throwable instance to Subscribers. * * @param <T> the value type * @see <a href="https://github.com/reactor/reactive-streams-commons">Reactive-Streams-Commons</a> */
final class MonoError<T> extends Mono<T> implements Fuseable.ScalarCallable, SourceProducer<T> { final Throwable error; MonoError(Throwable error) { this.error = Objects.requireNonNull(error, "error"); } @Override public T block(Duration m) { throw Exceptions.propagate(error); } @Override public T block() { throw Exceptions.propagate(error); } @Override public void subscribe(CoreSubscriber<? super T> actual) { Operators.error(actual, error); } @Override public Object call() throws Exception { if(error instanceof Exception){ throw ((Exception)error); } throw Exceptions.propagate(error); } @Override public Object scanUnsafe(Attr key) { if (key == Attr.RUN_STYLE) return Attr.RunStyle.SYNC; return null; } }