camel-rabbitmq requeue example route

RabbitMQRequeueRouteBuilder.java

package com.mgyongyosi.rabbitmq.test.routes;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.rabbitmq.RabbitMQConstants;
import org.springframework.stereotype.Component;

@Component
public class RabbitMQRequeueRouteBuilder extends RouteBuilder {

    @Override
    public void configure() throws Exception {
        // @formatter:off
        
        from("rabbitmq://localhost:5672/first?queue=test&concurrentConsumers=10&username=user&password=bitnami&prefetchSize=1&autoAck=false&autoDelete=false")
            .onException(NotReadyException.class)
                .log("Error for ${body}! Requeue")
                .asyncDelayedRedelivery().redeliveryDelay(5000) // wait 5 secs to redeliver and requeue if the redeliver fails
                .maximumRedeliveries(1)
                .setHeader(RabbitMQConstants.REQUEUE, constant(true))
                .handled(true)
                .setFaultBody(constant(true))
            .end()
            .convertBodyTo(Integer.class)
            .log("Received: ${body}")
            .process((e) -> {
                int num = e.getIn().getBody(Integer.class);
                // Throw exception if the number is even
                if(num % 2 == 0) {
                    throw new NotReadyException(); // create a new Exception and throw it if the status is not ready
                }
            })
            .log("Not even number processed successfully: ${body}");


        // @formatter:on
    }

}