[英]spring cloud aws multiple sqs listener
我的項目中有 2 個 sqs 偵聽器。 我希望其中一個具有相同的設置,而其中一個具有不同的設置。 我想更改的唯一值是 maxNumberOfMessages。
最實用的方法是什么? 我想為監聽器之一設置不同的 maxNumberOfMessages 值。
這是我的配置;
@Bean
public AWSCredentialsProvider awsCredentialsProvider(@Value("${cloud.aws.profile}") String profile,
@Value("${cloud.aws.region.static}") String region,
@Value("${cloud.aws.roleArn}") String role,
@Value("${cloud.aws.user}") String user) {
...
return new AWSStaticCredentialsProvider(sessionCredentials);
}
@Bean
@Primary
@Qualifier("amazonSQSAsync")
public AmazonSQSAsync amazonSQSAsync(@Value("${cloud.aws.region.static}") String region, AWSCredentialsProvider awsCredentialsProvider) {
return AmazonSQSAsyncClientBuilder.standard()
.withCredentials(awsCredentialsProvider)
.withRegion(region)
.build();
}
@Bean
@Primary
public SimpleMessageListenerContainerFactory simpleMessageListenerContainerFactory(AmazonSQSAsync amazonSqs) {
SimpleMessageListenerContainerFactory factory = new SimpleMessageListenerContainerFactory();
factory.setAmazonSqs(amazonSqs);
factory.setMaxNumberOfMessages(1);
factory.setWaitTimeOut(10);
factory.setQueueMessageHandler(new SqsQueueMessageHandler());
return factory;
}
這是聽眾;
@SqsListener(value = "${messaging.queue.blabla.source}", deletionPolicy = SqsMessageDeletionPolicy.NEVER)
public void listen(Message message, Acknowledgment acknowledgment, @Header("MessageId") String messageId) {
log.info("Message Received");
try {
....
acknowledgment.acknowledge().get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
} catch (Exception ex) {
throw new RuntimeException(ex.getMessage());
}
}
以下 hack 對我有用(如果每個聽眾收聽不同的隊列)
@Bean
public SimpleMessageListenerContainerFactory simpleMessageListenerContainerFactory(AmazonSQSAsync amazonSqs) {
return new SimpleMessageListenerContainerFactory() {
@Override
public SimpleMessageListenerContainer createSimpleMessageListenerContainer() {
SimpleMessageListenerContainer simpleMessageListenerContainer = new SimpleMessageListenerContainer() {
@Override
protected void startQueue(String queueName, QueueAttributes queueAttributes) {
// A place to configure queue based maxNumberOfMessages
try {
if (queueName.endsWith(".fifo")) {
FieldUtils.writeField(queueAttributes, "maxNumberOfMessages", 1, true);
}
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
super.startQueue(queueName, queueAttributes);
}
};
simpleMessageListenerContainer.setAmazonSqs(amazonSqs);
return simpleMessageListenerContainer;
}
};
}
我找到了解決方案並在 github 上的示例 repo 上分享。 github鏈接
如果我在偵聽器類上添加@EnableAsync 注釋並將@Async 注釋添加到處理程序方法我的問題正在解決:)
不幸的是,Sushant 的解決方案沒有在 Kotlin 中為我編譯(因為 QueueAttributes 是靜態保護類),但我用它寫了以下內容:
@Bean
fun simpleMessageListenerContainerFactory(sqs: AmazonSQSAsync): SimpleMessageListenerContainerFactory =
object : SimpleMessageListenerContainerFactory() {
override fun createSimpleMessageListenerContainer(): SimpleMessageListenerContainer {
val container = object : SimpleMessageListenerContainer() {
override fun afterPropertiesSet() {
super.afterPropertiesSet()
registeredQueues.forEach { (queue, attributes) ->
if (queue.contains(QUEUE_NAME)) {
FieldUtils.writeField(
attributes,
"maxNumberOfMessages",
NEW_MAX_NUMBER_OF_MESSAGES,
true
)
}
}
}
}
container.setWaitTimeOut(waitTimeOut)
container.setMaxNumberOfMessages(maxNumberOfMessages)
container.setAmazonSqs(sqs)
return container
}
}
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