我正在尝试设置一个集成流来消耗来自amazon sqs队列的消息,并且到目前为止它的工作正常。但我想调整每分钟或几秒钟的消息数量。例如每分钟20条消息。
这是我的sql监听器bean的定义
@Bean
public MessageProducer mySqsMessageDrivenChannelAdapter() {
SqsMessageDrivenChannelAdapter adapter = new SqsMessageDrivenChannelAdapter(this.amazonSqs, queueName);
adapter.setMessageDeletionPolicy(SqsMessageDeletionPolicy.ON_SUCCESS);
adapter.setVisibilityTimeout(TIMEOUT_VISIBILITY);
adapter.setWaitTimeOut(TIMEOUT_MESSAGE_WAIT);
adapter.setMaxNumberOfMessages(prefetch);
adapter.setOutputChannel(processMessageChannel());
return adapter;
}
正如您所看到的,我正在设置每次轮询获取的最大邮件数,但是如何设置轮询之间的延迟?
在常规的jms队列中,我可以使用自定义轮询器使用JMS.inboundAdapter,但似乎使用SqsMessageDrivenChannelAdapter我无法设置任何轮询计时器值。
也许我可以使用除SqsMessageDrivenChannelAdapter之外的MessageProducer但是哪一个?
是否可以使用sqs?
设置JMS.inboundAdapter答案 0 :(得分:1)
Spring Integration SqsMessageDrivenChannelAdapter
是一个消息驱动程序活动组件。它基于Springh Cloud AWS项目中的SimpleMessageListenerContainer
,该项目长期运行while()
循环以调用AmazonSQS.receiveMessage()
。该循环中的逻辑并不太复杂:
try {
ReceiveMessageResult receiveMessageResult = getAmazonSqs().receiveMessage(this.queueAttributes.getReceiveMessageRequest());
CountDownLatch messageBatchLatch = new CountDownLatch(receiveMessageResult.getMessages().size());
for (Message message : receiveMessageResult.getMessages()) {
if (isQueueRunning()) {
MessageExecutor messageExecutor = new MessageExecutor(this.logicalQueueName, message, this.queueAttributes);
getTaskExecutor().execute(new SignalExecutingRunnable(messageBatchLatch, messageExecutor));
} else {
messageBatchLatch.countDown();
}
}
try {
messageBatchLatch.await();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
} catch (Exception e) {
如您所见,我们在那里创建messageBatchLatch
并在循环后等待它。
每条消息都由他们自己的SignalExecutingRunnable
处理,countDown()
在MessageExecutor
的末尾。因此,您可能希望在目标服务方法中使用人工Thread.sleep()
来实现,以便在SQS轮询之间有更多的间隔。
但我听到了您的要求,我们确实需要添加类似的内容:
/**
* The sleep interval in milliseconds used in the main loop between shards polling cycles.
* Defaults to {@code 1000} minimum {@code 250}.
* @param idleBetweenPolls the interval to sleep between shards polling cycles.
*/
public void setIdleBetweenPolls(int idleBetweenPolls) {
this.idleBetweenPolls = Math.max(250, idleBetweenPolls);
}
我为KinesisMessageDrivenChannelAdapter
做了这个,但是我们必须要求Spring Cloud AWS为SimpleMessageListenerContainer
执行此操作。