com.sportradar.unifiedodds.sdk.impl.RabbitMqMessageReceiver Maven / Gradle / Ivy

/*
 * Copyright (C) Sportradar AG. See LICENSE for full license governing this code
 */

package com.sportradar.unifiedodds.sdk.impl;

import com.google.common.base.Preconditions;
import com.google.inject.Inject;

import java.io.IOException;
import java.util.List;

/**
 * A RabbitMQ message receiver
 */
public class RabbitMqMessageReceiver implements MessageReceiver {
    /**
     * The {@link RabbitMqChannel} instance which will provide the message payloads
     */
    private final RabbitMqChannel rabbitMqChannel;

    /**
     * The raw message consumer
     */
    private final ChannelMessageConsumer channelMessageConsumer;

    /**
     * Initializes a new instance of {@link RabbitMqMessageReceiver}
     *
     * @param rabbitMqChannel a {@link RabbitMqChannel} instance which will provide the message payloads
     * @param channelMessageConsumer the raw message consumer
     */
    @Inject
    RabbitMqMessageReceiver(RabbitMqChannel rabbitMqChannel, ChannelMessageConsumer channelMessageConsumer) {
        Preconditions.checkNotNull(rabbitMqChannel);

        this.rabbitMqChannel = rabbitMqChannel;
        this.channelMessageConsumer = channelMessageConsumer;
    }

    /**
     * Opens the current instance so it starts receiving messages
     *
     * @param routingKeys a {@link List} of requested routing keys
     * @param messageConsumer a {@link MessageConsumer} instance which will receive messages
     * @throws IOException if the RabbitMq channel failed to open
     */
    @Override
    public void open(List routingKeys, MessageConsumer messageConsumer) throws IOException {
        channelMessageConsumer.open(messageConsumer);

        rabbitMqChannel.open(routingKeys, channelMessageConsumer);
    }

    /**
     * Closes the current instance so it will no longer receive messages
     *
     * @throws IOException if the RabbitMq channel closure encountered a problem
     */
    @Override
    public void close() throws IOException {
        rabbitMqChannel.close();
    }

    /**
     * Indicates if the current instance is opened and receiving messages
     *
     * @return true if the instance is opened; otherwise false
     */
    @Override
    public boolean isOpened() {
        return rabbitMqChannel.isOpened();
    }
}