我已经构建了一个SQS侦听器,用于轮询SQS上的消息并将消息发送到REST服务。如果REST服务已关闭,我不希望将消息从队列中拉出,直到它准备就绪。我正在使用spring cloud来读取SQS上的消息。有没有关于如何实现这一目标的例子?
我已为此队列配置了死信队列。如果后端服务关闭,我不希望所有消息都以DLQ结束。
$officiants = Officiant::where('status', 1)
->whereHas('cred',function($q) {
$q->where('renewal', 0);
})
->get();
监听
@Configuration
public class SqsListenerConfiguration {
@Bean
@ConfigurationProperties(prefix = "aws.configuration")
public ClientConfiguration clientConfiguration() {
return new ClientConfiguration();
}
@Bean
@Primary
public AWSCredentialsProvider awsCredentialsProvider() {
ProfileCredentialsProvider credentialsProvider = new ProfileCredentialsProvider("credential");
try {
credentialsProvider.getCredentials();
System.out.println(credentialsProvider.getCredentials().getAWSAccessKeyId());
System.out.println(credentialsProvider.getCredentials().getAWSSecretKey());
} catch (Exception e) {
throw new AmazonClientException(
"Cannot load the credentials from the credential profiles file. " +
"Please make sure that your credentials file is at the correct " +
"location (~/.aws/credentials), and is in valid format.",
e);
}
return credentialsProvider;
}
@Bean
@Primary
public AmazonSQSAsync amazonSQSAsync() {
return AmazonSQSAsyncClientBuilder.standard().
withCredentials(awsCredentialsProvider()).
withClientConfiguration(clientConfiguration()).
build();
}
@Bean
@ConfigurationProperties(prefix = "aws.queue")
public SimpleMessageListenerContainer simpleMessageListenerContainer(AmazonSQSAsync amazonSQSAsync) {
SimpleMessageListenerContainer simpleMessageListenerContainer = new SimpleMessageListenerContainer();
simpleMessageListenerContainer.setAmazonSqs(amazonSQSAsync);
simpleMessageListenerContainer.setMessageHandler(queueMessageHandler());
simpleMessageListenerContainer.setMaxNumberOfMessages(10);
simpleMessageListenerContainer.setTaskExecutor(threadPoolTaskExecutor());
return simpleMessageListenerContainer;
}
@Bean
public QueueMessageHandler queueMessageHandler() {
QueueMessageHandlerFactory queueMessageHandlerFactory = new QueueMessageHandlerFactory();
queueMessageHandlerFactory.setAmazonSqs(amazonSQSAsync());
QueueMessageHandler queueMessageHandler = queueMessageHandlerFactory.createQueueMessageHandler();
return queueMessageHandler;
}
@Bean
public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(1);
executor.setMaxPoolSize(1);
executor.setThreadNamePrefix("oaoQueueExecutor");
executor.initialize();
return executor;
}
@Bean
public QueueMessagingTemplate messagingTemplate(@Autowired AmazonSQSAsync amazonSQSAsync) {
return new QueueMessagingTemplate(amazonSQSAsync);
}
}