DeferredResult from JMS Request/Reply with ListenableFuture - spring

Question

I was looking for opportunities to improve the Rest Api we have exposed to external clients. During that exercise, I found I am barely taking advantage of the decision our integration team took to have backend integrations with JMS request/reply instead of traditional blocking SOAP request/reply.
Currently all the interactions to message broker are done using jmsOutboundGateway, because of which requesting thread has to wait for completion. In order to scale RestAPI, I want to send JMS reply using DeferredResult from Spring MVC controller. The controller interaction with message broker is depicted below:
Controller --> GatewayProxy --> JMSOutboundGateway
I am looking for opportunities to use ListenableFuture as return type of GatewayProxy, but I am unable to find a proper mean of achieving it using spring integration.
Below is the integration flow I am calling from controller:
<int:gateway
service-interface="ae.emaratech.ngx.service.PermitSearchService"
default-request-channel="permit_search_input_channel"
default-reply-timeout="${broker.jms.gateway.min.consumers}"/>
<int:channel id="permit_search_input_channel" />
<int:chain input-channel="permit_search_input_channel">
<int:header-enricher>
<int:header name="person_number" expression="payload"/>
</int:header-enricher>
<int:transformer expression="#formatString(#api_messages['FIND_PERM_BY_PERSNO_MSG'],headers)"/>
<int:header-filter header-names="JMS_*,jms_*,priority" pattern-match="true" />
<int:header-enricher>
<int:header name="jms_type" type="java.lang.String" value="1" overwrite="true"/>
</int:header-enricher>
<jms:outbound-gateway
request-destination="permitsInboundQueue"
reply-destination="permitsOutboundQueue"
receive-timeout="${broker.jms.gateway.timeout}"
correlation-key="Correlation_ID"
connection-factory="brokerConnectionFactory">
<jms:reply-listener concurrent-consumers="${broker.jms.gateway.min.consumers}" max-concurrent-consumers="${broker.jms.gateway.max.consumers}"/>
</jms:outbound-gateway>
<int-xml:xpath-filter throw-exception-on-rejection="true">
<int-xml:xpath-expression expression="not(boolean(/*/ErrorDetails))"/>
</int-xml:xpath-filter>
<int-xml:xslt-transformer
xsl-resource="classpath:/META-INF/spring/integration/permit-to-json.xsl"
result-type="StringResult" >
</int-xml:xslt-transformer>
<int:transformer expression="payload.toString()"/>
</int:chain>

Answer 1

Not sure what problem you have, but the feature looks like:
ListenableFuture<String> result = this.asyncGateway.async("foo");
result.addCallback(new ListenableFutureCallback<String>() {
#Override
public void onSuccess(String result) {
...
}
#Override
public void onFailure(Throwable t) {
...
}
});
It is available since version 4.1.