package org.springframework.amqp.helloworld.async;
import java.util.concurrent.atomic.AtomicInteger;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor;
@Configuration
public class ProducerConfiguration {
protected final String helloWorldQueueName = "hello.world.queue";
@Bean
public RabbitTemplate rabbitTemplate() {
RabbitTemplate template = new RabbitTemplate(connectionFactory());
template.setRoutingKey(this.helloWorldQueueName);
return template;
}
@Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory("localhost");
connectionFactory.setUsername("guest");
connectionFactory.setPassword("guest");
return connectionFactory;
}
@Bean
public ScheduledProducer scheduledProducer() {
return new ScheduledProducer();
}
@Bean
public BeanPostProcessor postProcessor() {
return new ScheduledAnnotationBeanPostProcessor();
}
static class ScheduledProducer {
@Autowired
private volatile RabbitTemplate rabbitTemplate;
private final AtomicInteger counter = new AtomicInteger();
@Scheduled(fixedRate = 3000)
public void sendMessage() {
rabbitTemplate.convertAndSend("Hello World " + counter.incrementAndGet());
}
}
}