Combining #SqsListener and #RequestMapping - spring

Question

We're currently in the middle of migrating our current architecture into Spring-AWS-based microservices. One of my tasks is to research on how our microservices communicate with one another. I'm aiming to set-up a hybrid system of RESTful HTTP endpoints and SQS producers and consumers.
As an example, I have the below code:
#SqsListener("request_queue")
#SendTo("response_queue")
#PostMapping("/send")
public Object send(#RequestBody Request request, #Header("SenderId") String senderId) {
if (senderId != null && !senderId.trim().isEmpty()) {
logger.info("SQS Message Received!");
logger.info("Sender ID: ".concat(senderId));
request = new Gson().fromJson(payload, Request.class);
}
Response response = processRequest(request); // Process request
return response;
}
Theoretically, this method should be able to handle the following:
Receive a Request object via HTTP
Continually poll the request_queue for a message containing the Request object
As an HTTP endpoint, the method returns no error. However, as an SQS listener, it runs into the following exception:
org.springframework.messaging.converter.MessageConversionException:
Cannot convert from [java.lang.String] to [com.oriente.salt.Request] for
GenericMessage [payload={"source":"QueueTester","message":"This is a wonderful
message send by queue from Habanero to Salt. Spicy.","msisdn":"[phone]"},
headers={LogicalResourceId=salt_queue, ApproximateReceiveCount=1,
SentTimestamp=1523444620218, ....
I've tried to annotate the Request param with #Payload, but to no avail. Currently I've also set-up the AWS config via Java, as seen below:
ConsuerAWSSQSConfig.java
#Configuration
public class ConsumerAWSSQSConfig {
#Bean
public SimpleMessageListenerContainer simpleMessageListenerContainer() {
SimpleMessageListenerContainer msgListenerContainer = simpleMessageListenerContainerFactory()
.createSimpleMessageListenerContainer();
msgListenerContainer.setMessageHandler(queueMessageHandler());
return msgListenerContainer;
}
#Bean
public SimpleMessageListenerContainerFactory simpleMessageListenerContainerFactory() {
SimpleMessageListenerContainerFactory msgListenerContainerFactory = new SimpleMessageListenerContainerFactory();
msgListenerContainerFactory.setAmazonSqs(amazonSQSClient());
return msgListenerContainerFactory;
}
#Bean
public QueueMessageHandler queueMessageHandler() {
QueueMessageHandlerFactory queueMsgHandlerFactory = new QueueMessageHandlerFactory();
queueMsgHandlerFactory.setAmazonSqs(amazonSQSClient());
QueueMessageHandler queueMessageHandler = queueMsgHandlerFactory.createQueueMessageHandler();
List<HandlerMethodArgumentResolver> list = new ArrayList<>();
HandlerMethodArgumentResolver resolver = new PayloadArgumentResolver(new MappingJackson2MessageConverter());
list.add(resolver);
queueMessageHandler.setArgumentResolvers(list);
return queueMessageHandler;
}
#Lazy
#Bean(name = "amazonSQS", destroyMethod = "shutdown")
public AmazonSQSAsync amazonSQSClient() {
AmazonSQSAsync awsSQSAsync = AmazonSQSAsyncClientBuilder.standard().withRegion(Regions.AP_SOUTHEAST_1).build();
return awsSQSAsync;
}
}
What do you guys think?