pzalejko.iot.hardware.home.core.service.sender.InternalMqttRemoteCallback.java Source code

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Here is the source code for pzalejko.iot.hardware.home.core.service.sender.InternalMqttRemoteCallback.java

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/*******************************************************************************
 * Copyright (c) 2015 Pawel Zalejko(p.zalejko@gmail.com).
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Apache License Version 2.0
 * which accompanies this distribution, and is available at
 * http://www.apache.org/licenses/
 *******************************************************************************/
package pzalejko.iot.hardware.home.core.service.sender;

import java.io.Serializable;
import java.util.Optional;

import javax.inject.Inject;

import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttCallback;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import pzalejko.iot.common.home.api.converter.EventTopicConverter;
import pzalejko.iot.common.home.api.converter.MessageToEventConverter;
import pzalejko.iot.common.home.api.event.EventBus;
import pzalejko.iot.common.home.api.event.EventType;
import pzalejko.iot.hardware.home.core.util.LogMessages;

/**
 * The {@link InternalMqttRemoteCallback} is responsible for catching remote messages sent on certain events. All messages will be
 * propagated as {@link pzalejko.iot.common.home.api.event.EventSource#REMOTE remote} events.
 *
 */
@Component
class InternalMqttRemoteCallback implements MqttCallback {

    private static final Logger LOG = LoggerFactory.getLogger(InternalMqttRemoteCallback.class);

    private final EventBus eventBus;
    private final EventTopicConverter eventTopicMapper;
    private final MessageToEventConverter eventConverter;

    @Inject
    public InternalMqttRemoteCallback(EventBus eventBus, EventTopicConverter eventTopicMapper,
            MessageToEventConverter eventConverter) {
        this.eventBus = eventBus;
        this.eventTopicMapper = eventTopicMapper;
        this.eventConverter = eventConverter;
    }

    @Override
    public void connectionLost(Throwable cause) {
        LOG.warn(LogMessages.MQTT_CONNECTION_LOST, cause.getMessage(), cause);
    }

    @Override
    public void messageArrived(String topic, MqttMessage message) throws Exception {
        LOG.debug(LogMessages.RECEIVED_MESSAGE, topic, message);

        final Optional<EventType> eventType = Optional.ofNullable(eventTopicMapper.getEventType(topic));
        eventType.ifPresent(t -> {
            final Serializable data = eventConverter.convertIn(t, message.getPayload());
            eventBus.postRemote(data, t);
        });
    }

    @Override
    public void deliveryComplete(IMqttDeliveryToken token) {
        LOG.warn(LogMessages.MQTT_DELIVERY_COMPLETE, token);
    }
}