Using Topics and Acknowledgment with RabbitMq - rabbitmq

Question

I have been trying to use RabbitMq instead of using Kafka. I am a beginner for using RabbitMq. How can I change this KafkaListener event to RabbitMQListener?
I have been trying to find out, but I could not. I need to change this listener for RabbitMQ.
PRODUCER
private final KafkaTemplate<String, Object> kafkaTemplate;
public AccountEventProducer(KafkaTemplate<String, Object> kafkaTemplate) {
this.kafkaTemplate = kafkaTemplate;
}
#Override
public void produce(String topic, BaseEvent event) {
this.kafkaTemplate.send(topic, event);
}
CONSUMER
#KafkaListener(topics = "AccountOpenedEvent", groupId = "${spring.kafka.consumer.group-id}")
#Override
public void consume(AccountOpenedEvent event, Acknowledgment ack) {
eventHandler.on(event);
ack.acknowledge();
}
Can anyone help me?

Answer 1

To use rabbitmq on the producer side, follow the steps below:
1. The first step is to add dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
<version>2.5.5</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-clenter code hereoud-starter-stream-rabbit</artifactId>
<version>3.1.3</version>
</dependency>
2. The second step is to configure the connection to rabbitmq in the yml file:
spring:
rabbitmq:
host: localhost
password: guest
port: 5672
username: guest
exchange: user.exchange
queue: user.queue
routingkey: user.routingkey
3. In the third step, create a class to configure the required beans :
#Configuration
public class ProducerConfig {
#Bean
public Queue queue(){
return new Queue("user.queue", false);
}
#Bean
public TopicExchange topicExchange(){
return new TopicExchange ( "user.exchange" );
}
#Bean
public Binding binding(Queue queue, TopicExchange topicExchange){
return BindingBuilder.bind( queue).to( topicExchange).with( "user.routingkey" );
}
#Bean
public MessageConverter jsonMessageConverter() {
return new Jackson2JsonMessageConverter();
}
#Bean
public AmqpTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
final RabbitTemplate rabbitTemplate = new RabbitTemplate( connectionFactory);
rabbitTemplate.setMessageConverter(jsonMessageConverter());
return rabbitTemplate;
}
}
5. The last step is to create a service on the producer side to submit a request to rabbitmq
#Autowired
AmqpTemplate amqpTemplate;
public void send(Object requestEvent){
amqpTemplate.convertAndSend( "user.exchange","user.routingkey",requestEvent );
System.out.println("Send messages successfully.");
}
}
To use rabbitmq on the consumer side, follow the steps below:
1. first do steps 1 and 2 of the producer side, after that create a service to read the message:
#RabbitListener(queues = "user.queue")
public void getMessage(Object requestEvent){
System.out.println(requestEvent.toString());
}
2. The second step is create a class to configure the required beans
#Configuration
public class ConsumerConfig {
#Bean
public MessageConverter jsonMessageConverter() {
return new Jackson2JsonMessageConverter();
}
}