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/*
 * 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;

import java.util.function.Consumer;

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

/**
 * Hook with fusion into the lifecycle events and signals of a {@link Flux}
 * and execute a provided callback after any of onComplete, onError and cancel events.
 * The hook is executed only once and receives the event type that triggered
 * it ({@link SignalType#ON_COMPLETE}, {@link SignalType#ON_ERROR} or
 * {@link SignalType#CANCEL}).
 * 
 * Note that any exception thrown by the hook are caught and bubbled up
 * using {@link Operators#onErrorDropped(Throwable, reactor.util.context.Context)}.
 *
 * @param  the value type
 * @author Simon Baslé
 */
final class FluxDoFinallyFuseable extends FluxOperator implements Fuseable {

	final Consumer onFinally;

	FluxDoFinallyFuseable(Flux source, Consumer onFinally) {
		super(source);
		this.onFinally = onFinally;
	}

	@Override
	public void subscribe(CoreSubscriber actual) {
		source.subscribe(FluxDoFinally.createSubscriber(actual, onFinally, true));
	}
}