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BaseGenericMqttConsumingClient.java
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BaseGenericMqttConsumingClient.java
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/*
* Copyright (c) 2023 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.connectivity.service.messaging.mqtt.hivemq.client;
import static org.eclipse.ditto.base.model.common.ConditionChecker.checkNotNull;
import org.eclipse.ditto.base.model.common.ConditionChecker;
import org.eclipse.ditto.connectivity.service.messaging.mqtt.hivemq.message.publish.GenericMqttPublish;
import com.hivemq.client.mqtt.MqttClient;
import com.hivemq.client.mqtt.MqttGlobalPublishFilter;
import com.hivemq.client.mqtt.mqtt3.Mqtt3RxClient;
import com.hivemq.client.mqtt.mqtt3.message.publish.Mqtt3Publish;
import com.hivemq.client.mqtt.mqtt5.Mqtt5RxClient;
import com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish;
import io.reactivex.Flowable;
/**
* Base implementation of {@link GenericMqttConsumingClient}.
*/
abstract class BaseGenericMqttConsumingClient<C extends MqttClient> implements GenericMqttConsumingClient {
private final C mqttClient;
private BaseGenericMqttConsumingClient(final C mqttClient) {
this.mqttClient = mqttClient;
}
static BaseGenericMqttConsumingClient<Mqtt3RxClient> ofMqtt3RxClient(
final Mqtt3RxClient mqtt3RxClient
) {
return new Mqtt3ConsumingClient(mqtt3RxClient);
}
static BaseGenericMqttConsumingClient<Mqtt5RxClient> ofMqtt5RxClient(
final Mqtt5RxClient mqtt5RxClient
) {
return new Mqtt5ConsumingClient(mqtt5RxClient);
}
@Override
public String toString() {
final var mqttClientConfig = mqttClient.getConfig();
final var clientIdentifier = mqttClientConfig.getClientIdentifier();
return clientIdentifier.map(String::valueOf).orElse("");
}
private static final class Mqtt3ConsumingClient extends BaseGenericMqttConsumingClient<Mqtt3RxClient> {
private final BufferingFlowableWrapper<Mqtt3Publish> bufferingFlowableWrapper;
private boolean isDisposed = false;
private Mqtt3ConsumingClient(final Mqtt3RxClient mqtt3RxClient) {
super(ConditionChecker.checkNotNull(mqtt3RxClient, "mqtt3RxClient"));
bufferingFlowableWrapper = BufferingFlowableWrapper.of(mqtt3RxClient.publishes(MqttGlobalPublishFilter.ALL, true));
}
@Override
public Flowable<GenericMqttPublish> consumePublishes() {
return bufferingFlowableWrapper.toFlowable().map(GenericMqttPublish::ofMqtt3Publish);
}
@Override
public void stopBufferingPublishes() {
bufferingFlowableWrapper.stopBuffering();
}
@Override
public void dispose() {
bufferingFlowableWrapper.dispose();
isDisposed = true;
}
@Override
public boolean isDisposed() {
return isDisposed;
}
}
private static final class Mqtt5ConsumingClient extends BaseGenericMqttConsumingClient<Mqtt5RxClient> {
private final BufferingFlowableWrapper<Mqtt5Publish> bufferingFlowableWrapper;
private boolean isDisposed = false;
private Mqtt5ConsumingClient(final Mqtt5RxClient mqtt5RxClient) {
super(checkNotNull(mqtt5RxClient, "mqtt5RxClient"));
bufferingFlowableWrapper = BufferingFlowableWrapper.of(mqtt5RxClient.publishes(MqttGlobalPublishFilter.ALL, true));
}
@Override
public Flowable<GenericMqttPublish> consumePublishes() {
return bufferingFlowableWrapper.toFlowable().map(GenericMqttPublish::ofMqtt5Publish);
}
@Override
public void stopBufferingPublishes() {
bufferingFlowableWrapper.stopBuffering();
}
@Override
public void dispose() {
bufferingFlowableWrapper.dispose();
isDisposed = true;
}
@Override
public boolean isDisposed() {
return isDisposed;
}
}
}