reactor.kafka.sender.internals.KafkaOutboundThen Maven / Gradle / Ivy

/*
 * Copyright (c) 2020-2021 VMware Inc. or its affiliates, 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.kafka.sender.internals;

import org.reactivestreams.Publisher;
import reactor.core.publisher.Mono;
import reactor.kafka.sender.KafkaOutbound;

class KafkaOutboundThen extends DefaultKafkaOutbound {

    private final Mono thenMono;

    KafkaOutboundThen(DefaultKafkaSender sender, KafkaOutbound kafkaOutbound, Publisher thenPublisher) {
        super(sender);
        Mono parentMono = kafkaOutbound.then();
        if (parentMono == Mono.empty())
            this.thenMono = Mono.from(thenPublisher);
        else
            this.thenMono = parentMono.thenEmpty(thenPublisher);
    }

    @Override
    public Mono then() {
        return thenMono;
    }
}