Question

我的队列配置如下

 @Bean
   public ConnectionFactory connectionFactory() {
   CachingConnectionFactory connectionFactory = new            CachingConnectionFactory(hostName);
    connectionFactory.setUsername(mqUsername);
    connectionFactory.setPassword(mqPassword);
    connectionFactory.setVirtualHost(virtualHost);
    return connectionFactory;
   }

   @Bean
   RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
    RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
    rabbitTemplate.setMessageConverter(new Jackson2JsonMessageConverter());
    return rabbitTemplate;
   }

  @Bean
  public AmqpAdmin amqpAdmin() {
    RabbitAdmin rabbitAdmin = new RabbitAdmin(connectionFactory());
    return rabbitAdmin;
  }

我有像

这样的异步配置

@EnableAsync
@Configuration
public class AsyncConfiguration implements AsyncConfigurer {

    @Override
    public Executor getAsyncExecutor() {
        return taskExector();
    }

    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return new SimpleAsyncUncaughtExceptionHandler();
    }

    @Bean
    public ThreadPoolTaskExecutor taskExector() {
        ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
        taskExecutor.setCorePoolSize(10);
        taskExecutor.setMaxPoolSize(10);
        taskExecutor.initialize();
        return taskExecutor;
    }

}

在我的异步方法中，我使用的是amqp admin和兔子模板bean。因此，根据配置，我将在最多执行任务时有10个线程，我在一段时间应用程序挂起并使用执行器获取转储后我发现以下信息，似乎死线使用来自行号的兔模板/ amqp管理bean。这种方法有什么问题，或者如何确保多个线程可以访问那些兔子mq bean。

版本：Spring boot 1.4.0.RELEASE，Java 8.

我的服务是这样的

@Service
public class QDispatcherService implements DispatcherService {
    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private AmqpAdmin amqpAdmin;


    @Autowired
    RabbitTemplate rabbitTemplate;

    @Override
    public void sendData(Data dataObject) throws Exception {

        try {
            //something on this properties , I have to check if queue exist or there are messages in it to decide to add message in other queue
            Properties properties = amqpAdmin.getQueueProperties(queueName);
            amqpAdmin.declareQueue(new Queue(queueName));
             logger.info("***********************DEBUG 4***********************");
            rabbitTemplate.convertAndSend(queueName, dataObject);

        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

}

{
    "threadName": "taskExector-10",
    "threadId": 77,
    "blockedTime": -1,
    "blockedCount": 317,
    "waitedTime": -1,
    "waitedCount": 379,
    "lockName": "com.rabbitmq.utility.BlockingValueOrException@105f30b9",
    "lockOwnerId": -1,
    "lockOwnerName": null,
    "inNative": false,
    "suspended": false,
    "threadState": "WAITING",
    "stackTrace": [
      {
        "methodName": "wait",
        "fileName": "Object.java",
        "lineNumber": -2,
        "className": "java.lang.Object",
        "nativeMethod": true
      },
      {
        "methodName": "wait",
        "fileName": "Object.java",
        "lineNumber": 502,
        "className": "java.lang.Object",
        "nativeMethod": false
      },
      {
        "methodName": "get",
        "fileName": "BlockingCell.java",
        "lineNumber": 50,
        "className": "com.rabbitmq.utility.BlockingCell",
        "nativeMethod": false
      },
      {
        "methodName": "uninterruptibleGet",
        "fileName": "BlockingCell.java",
        "lineNumber": 89,
        "className": "com.rabbitmq.utility.BlockingCell",
        "nativeMethod": false
      },
      {
        "methodName": "uninterruptibleGetValue",
        "fileName": "BlockingValueOrException.java",
        "lineNumber": 33,
        "className": "com.rabbitmq.utility.BlockingValueOrException",
        "nativeMethod": false
      },
      {
        "methodName": "getReply",
        "fileName": "AMQChannel.java",
        "lineNumber": 361,
        "className": "com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation",
        "nativeMethod": false
      },
      {
        "methodName": "privateRpc",
        "fileName": "AMQChannel.java",
        "lineNumber": 226,
        "className": "com.rabbitmq.client.impl.AMQChannel",
        "nativeMethod": false
      },
      {
        "methodName": "exnWrappingRpc",
        "fileName": "AMQChannel.java",
        "lineNumber": 118,
        "className": "com.rabbitmq.client.impl.AMQChannel",
        "nativeMethod": false
      },
      {
        "methodName": "queueDeclare",
        "fileName": "ChannelN.java",
        "lineNumber": 844,
        "className": "com.rabbitmq.client.impl.ChannelN",
        "nativeMethod": false
      },
      {
        "methodName": "queueDeclare",
        "fileName": "ChannelN.java",
        "lineNumber": 61,
        "className": "com.rabbitmq.client.impl.ChannelN",
        "nativeMethod": false
      },
      {
        "methodName": "invoke",
        "fileName": null,
        "lineNumber": -1,
        "className": "sun.reflect.GeneratedMethodAccessor176",
        "nativeMethod": false
      },
      {
        "methodName": "invoke",
        "fileName": "DelegatingMethodAccessorImpl.java",
        "lineNumber": 43,
        "className": "sun.reflect.DelegatingMethodAccessorImpl",
        "nativeMethod": false
      },
      {
        "methodName": "invoke",
        "fileName": "Method.java",
        "lineNumber": 498,
        "className": "java.lang.reflect.Method",
        "nativeMethod": false
      },
      {
        "methodName": "invoke",
        "fileName": "CachingConnectionFactory.java",
        "lineNumber": 916,
        "className": "org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler",
        "nativeMethod": false
      },
      {
        "methodName": "queueDeclare",
        "fileName": null,
        "lineNumber": -1,
        "className": "com.sun.proxy.$Proxy166",
        "nativeMethod": false
      },
      {
        "methodName": "declareQueues",
        "fileName": "RabbitAdmin.java",
        "lineNumber": 577,
        "className": "org.springframework.amqp.rabbit.core.RabbitAdmin",
        "nativeMethod": false
      },
      {
        "methodName": "access$200",
        "fileName": "RabbitAdmin.java",
        "lineNumber": 67,
        "className": "org.springframework.amqp.rabbit.core.RabbitAdmin",
        "nativeMethod": false
      },
      {
        "methodName": "doInRabbit",
        "fileName": "RabbitAdmin.java",
        "lineNumber": 209,
        "className": "org.springframework.amqp.rabbit.core.RabbitAdmin$3",
        "nativeMethod": false
      },
      {
        "methodName": "doInRabbit",
        "fileName": "RabbitAdmin.java",
        "lineNumber": 206,
        "className": "org.springframework.amqp.rabbit.core.RabbitAdmin$3",
        "nativeMethod": false
      },
      {
        "methodName": "doExecute",
        "fileName": "RabbitTemplate.java",
        "lineNumber": 1394,
        "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
        "nativeMethod": false
      },
      {
        "methodName": "execute",
        "fileName": "RabbitTemplate.java",
        "lineNumber": 1367,
        "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
        "nativeMethod": false
      },
      {
        "methodName": "execute",
        "fileName": "RabbitTemplate.java",
        "lineNumber": 1343,
        "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
        "nativeMethod": false
      },
      {
        "methodName": "declareQueue",
        "fileName": "RabbitAdmin.java",
        "lineNumber": 206,
        "className": "org.springframework.amqp.rabbit.core.RabbitAdmin",
        "nativeMethod": false
      },
      {
        "methodName": "sendData",
        "fileName": "QDispatcherService.java",
        "lineNumber": 59,
        "className": "com.mycompany.QDispatcherService",
        "nativeMethod": false
      },

      ....

       "lockedMonitors": [
      {
        "className": "java.lang.Object",
        "identityHashCode": 285810320,
        "lockedStackFrame": {
          "methodName": "invoke",
          "fileName": "CachingConnectionFactory.java",
          "lineNumber": 916,
          "className": "org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler",
          "nativeMethod": false
        },
        "lockedStackDepth": 13
      }
    ],
    "lockedSynchronizers": [
      {
        "className": "java.util.concurrent.ThreadPoolExecutor$Worker",
        "identityHashCode": 372417558
      }
    ],
    "lockInfo": {
      "className": "com.rabbitmq.utility.BlockingValueOrException",
      "identityHashCode": 274673849
    }
  },

________________________________________________________________________-

新追踪

{
"threadName": "taskExector-10",
"threadId": 77,
"blockedTime": -1,
"blockedCount": 37,
"waitedTime": -1,
"waitedCount": 1113,
"lockName": "java.io.DataOutputStream@33111fc",
"lockOwnerId": 65,
"lockOwnerName": "taskExector-8",
"inNative": false,
"suspended": false,
"threadState": "BLOCKED",
"stackTrace": [
  {
    "methodName": "writeFrame",
    "fileName": "SocketFrameHandler.java",
    "lineNumber": 170,
    "className": "com.rabbitmq.client.impl.SocketFrameHandler",
    "nativeMethod": false
  },
  {
    "methodName": "writeFrame",
    "fileName": "AMQConnection.java",
    "lineNumber": 542,
    "className": "com.rabbitmq.client.impl.AMQConnection",
    "nativeMethod": false
  },
  {
    "methodName": "transmit",
    "fileName": "AMQCommand.java",
    "lineNumber": 104,
    "className": "com.rabbitmq.client.impl.AMQCommand",
    "nativeMethod": false
  },
  {
    "methodName": "quiescingTransmit",
    "fileName": "AMQChannel.java",
    "lineNumber": 337,
    "className": "com.rabbitmq.client.impl.AMQChannel",
    "nativeMethod": false
  },
  {
    "methodName": "transmit",
    "fileName": "AMQChannel.java",
    "lineNumber": 313,
    "className": "com.rabbitmq.client.impl.AMQChannel",
    "nativeMethod": false
  },
  {
    "methodName": "basicPublish",
    "fileName": "ChannelN.java",
    "lineNumber": 686,
    "className": "com.rabbitmq.client.impl.ChannelN",
    "nativeMethod": false
  },
  {
    "methodName": "basicPublish",
    "fileName": "ChannelN.java",
    "lineNumber": 668,
    "className": "com.rabbitmq.client.impl.ChannelN",
    "nativeMethod": false
  },
  {
    "methodName": "invoke",
    "fileName": null,
    "lineNumber": -1,
    "className": "sun.reflect.GeneratedMethodAccessor176",
    "nativeMethod": false
  },
  {
    "methodName": "invoke",
    "fileName": "DelegatingMethodAccessorImpl.java",
    "lineNumber": 43,
    "className": "sun.reflect.DelegatingMethodAccessorImpl",
    "nativeMethod": false
  },
  {
    "methodName": "invoke",
    "fileName": "Method.java",
    "lineNumber": 498,
    "className": "java.lang.reflect.Method",
    "nativeMethod": false
  },
  {
    "methodName": "invoke",
    "fileName": "CachingConnectionFactory.java",
    "lineNumber": 916,
    "className": "org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler",
    "nativeMethod": false
  },
  {
    "methodName": "basicPublish",
    "fileName": null,
    "lineNumber": -1,
    "className": "com.sun.proxy.$Proxy166",
    "nativeMethod": false
  },
  {
    "methodName": "doSend",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 1451,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
    "nativeMethod": false
  },
  {
    "methodName": "doInRabbit",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 703,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate$3",
    "nativeMethod": false
  },
  {
    "methodName": "doExecute",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 1394,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
    "nativeMethod": false
  },
  {
    "methodName": "execute",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 1367,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
    "nativeMethod": false
  },
  {
    "methodName": "send",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 699,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
    "nativeMethod": false
  },
  {
    "methodName": "convertAndSend",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 767,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
    "nativeMethod": false
  },
  {
    "methodName": "convertAndSend",
    "fileName": "RabbitTemplate.java",
    "lineNumber": 754,
    "className": "org.springframework.amqp.rabbit.core.RabbitTemplate",
    "nativeMethod": false
  }

Answer 1

在每次发送时声明队列有点不寻常;这说，除了低效率，它应该工作。堆栈跟踪表明我们陷入了兔子客户端，等待队列声明的回复。当多个线程使用相同的通道时，我已经看到了这一点，但这应该永远不会发生，因为当前操作（管理，模板）完成时，通道总是返回到缓存，并且多个线程无法使用。

您可能想尝试新的4.0.0.RC1 amqp-client jar，因为他们现在已经添加了日志记录（在3.x.x客户端中不可用）。它可能有助于追踪事情。

异步和共享兔子模板

1 个答案: