com.hivemq.client.internal.mqtt.handler.publish.incoming.MqttSubscribedPublishFlowable Maven / Gradle / Ivy

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HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support

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/*
 * Copyright 2018 dc-square and the HiveMQ MQTT Client Project
 *
 * 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 com.hivemq.client.internal.mqtt.handler.publish.incoming;

import com.hivemq.client.internal.mqtt.MqttClientConfig;
import com.hivemq.client.internal.mqtt.exceptions.MqttClientStateExceptions;
import com.hivemq.client.internal.mqtt.handler.subscribe.MqttSubscriptionHandler;
import com.hivemq.client.internal.mqtt.ioc.ClientComponent;
import com.hivemq.client.internal.mqtt.message.subscribe.MqttSubscribe;
import com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish;
import com.hivemq.client.mqtt.mqtt5.message.subscribe.suback.Mqtt5SubAck;
import com.hivemq.client.rx.FlowableWithSingle;
import com.hivemq.client.rx.reactivestreams.WithSingleSubscriber;
import io.reactivex.internal.subscriptions.EmptySubscription;
import org.jetbrains.annotations.NotNull;
import org.reactivestreams.Subscriber;

/**
 * @author Silvio Giebl
 */
public class MqttSubscribedPublishFlowable extends FlowableWithSingle {

    private final @NotNull MqttSubscribe subscribe;
    private final @NotNull MqttClientConfig clientConfig;

    public MqttSubscribedPublishFlowable(
            final @NotNull MqttSubscribe subscribe, final @NotNull MqttClientConfig clientConfig) {

        this.subscribe = subscribe;
        this.clientConfig = clientConfig;
    }

    @Override
    protected void subscribeActual(final @NotNull Subscriber subscriber) {
        if (clientConfig.getState().isConnectedOrReconnect()) {
            final ClientComponent clientComponent = clientConfig.getClientComponent();
            final MqttIncomingQosHandler incomingQosHandler = clientComponent.incomingQosHandler();
            final MqttSubscriptionHandler subscriptionHandler = clientComponent.subscriptionHandler();

            final MqttSubscribedPublishFlow flow =
                    new MqttSubscribedPublishFlow(subscriber, clientConfig, incomingQosHandler);
            subscriber.onSubscribe(flow);
            subscriptionHandler.subscribe(subscribe, flow);
        } else {
            EmptySubscription.error(MqttClientStateExceptions.notConnected(), subscriber);
        }
    }

    @Override
    protected void subscribeBothActual(
            final @NotNull WithSingleSubscriber subscriber) {

        subscribeActual(subscriber);
    }
}