浅谈spring-boot-rabbitmq动态管理的方法

@Configuration
@ConditionalOnClass({ RabbitTemplate.class, Channel.class })
@EnableConfigurationProperties(RabbitProperties.class)
@Import(RabbitAnnotationDrivenConfiguration.class)
public class RabbitAutoConfiguration {
  ...
}

@Bean
@ConditionalOnMissingBean(name = "rabbitListenerContainerFactory")
public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(
 SimpleRabbitListenerContainerFactoryConfigurer configurer,
 ConnectionFactory connectionFactory) {
  SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
  configurer.configure(factory, connectionFactory);
  return factory;
}

/**
 * Create and start a new {@link MessageListenerContainer} using the specified factory.
 * @param endpoint the endpoint to create a {@link MessageListenerContainer}.
 * @param factory the {@link RabbitListenerContainerFactory} to use.
 * @return the {@link MessageListenerContainer}.
 */
protected MessageListenerContainer createListenerContainer(RabbitListenerEndpoint endpoint,
 RabbitListenerContainerFactory<?> factory) {
  MessageListenerContainer listenerContainer = factory.createListenerContainer(endpoint);
  if (listenerContainer instanceof InitializingBean) {
   try {
      ((InitializingBean) listenerContainer).afterPropertiesSet();
   }
   catch (Exception ex) {
      throw new BeanInitializationException("Failed to initialize message listener container", ex);
   }
  }
  int containerPhase = listenerContainer.getPhase();
  if (containerPhase < Integer.MAX_VALUE) { // a custom phase value
   if (this.phase < Integer.MAX_VALUE && this.phase != containerPhase) {
      throw new IllegalStateException("Encountered phase mismatch between container factory definitions: " +
       this.phase + " vs " + containerPhase);
   }
   this.phase = listenerContainer.getPhase();
  }  
  return listenerContainer;
}

/**
 * @return the managed {@link MessageListenerContainer} instance(s).
 */
public Collection<MessageListenerContainer> getListenerContainers() {
  return Collections.unmodifiableCollection(this.listenerContainers.values());
}
 
@Override
public void start() {
  for (MessageListenerContainer listenerContainer : getListenerContainers()) {
   startIfNecessary(listenerContainer);
  }
}

/**
 * Start the specified {@link MessageListenerContainer} if it should be started
 * on startup or when start is called explicitly after startup.
 * @see MessageListenerContainer#isAutoStartup()
 */
private void startIfNecessary(MessageListenerContainer listenerContainer) {
  if (this.contextRefreshed || listenerContainer.isAutoStartup()) {
   listenerContainer.start();
  }
}

@Override
public void stop() {
  for (MessageListenerContainer listenerContainer : getListenerContainers()) {
   listenerContainer.stop();
  }
}

import java.util.Set;
import javax.annotation.Resource;
import org.springframework.amqp.rabbit.listener.RabbitListenerEndpointRegistry;
import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.itopener.framework.ResultMap;
/**
 * Created by fuwei.deng on 2017年7月24日.
 */
@RestController
@RequestMapping("rabbitmq/listener")
public class RabbitMQController {

  @Resource
  private RabbitListenerEndpointRegistry rabbitListenerEndpointRegistry;
  
  @RequestMapping("stop")
  public ResultMap stop(){
   rabbitListenerEndpointRegistry.stop();
   return ResultMap.buildSuccess();
  }
  
  @RequestMapping("start")
  public ResultMap start(){
   rabbitListenerEndpointRegistry.start();
   return ResultMap.buildSuccess();
  }
  
  @RequestMapping("setup")
  public ResultMap setup(int consumer, int maxConsumer){
   Set<String> containerIds = rabbitListenerEndpointRegistry.getListenerContainerIds();
   SimpleMessageListenerContainer container = null;
   for(String id : containerIds){
   container = (SimpleMessageListenerContainer) rabbitListenerEndpointRegistry.getListenerContainer(id);
   if(container != null){
    container.setConcurrentConsumers(consumer);
    container.setMaxConcurrentConsumers(maxConsumer);
   }
   }
   return ResultMap.buildSuccess();
  }
}