GH-3626: RabbitMQ Stream Support (#3895)

Resolves https://github.com/spring-projects/spring-integration/issues/3626

- spec for stream listener container
- move message handler from scst to here; add spec

* Fix test.

* Polishing and Docs.

* Fix anchors in doc.

* Don't Extend `AbstractMessageProducingHandler`

src/reference/asciidoc/amqp.adoc

@@ -1,5 +1,5 @@
 [[amqp]]
-== AMQP Support
+== AMQP (RabbitMQ) Support
 
 Spring Integration provides channel adapters for receiving and sending messages by using the Advanced Message Queuing Protocol (AMQP).
 
@@ -29,6 +29,8 @@ The following adapters are available:
 * <<amqp-outbound-channel-adapter,Outbound Channel Adapter>>
 * <<amqp-outbound-gateway,Outbound Gateway>>
 * <<amqp-async-outbound-gateway,Async Outbound Gateway>>
+* <<rmq-stream-inbound-channel-adapter,RabbitMQ Stream Queue Inbound Channel Adapter>>
+* <<rmq-stream-outbound-channel-adapter,RabbitMQ Stream Queue Outbound Channel Adapter>>
 
 Spring Integration also provides a point-to-point message channel and a publish-subscribe message channel backed by AMQP Exchanges and Queues.
 
@@ -1417,3 +1419,53 @@ In return, that message is retrieved by Spring Integration and printed to the co
 The following image illustrates the basic set of Spring Integration components used in this sample.
 
 .The Spring Integration graph of the AMQP sample image::images/spring-integration-amqp-sample-graph.png[]
+
+[[rmq-streams]]
+=== RabbitMQ Stream Queue Support
+
+Version 6.0 introduced support for RabbitMQ Stream Queues.
+
+The DSL factory class for these endpoints is `Rabbit`.
+
+[[rmq-stream-inbound-channel-adapter]]
+==== RabbitMQ Stream Inbound Channel Adapter
+
+====
+[source, java]
+----
+@Bean
+IntegrationFlow flow(Environment env) {
+    @Bean
+	IntegrationFlow simpleStream(Environment env) {
+		return IntegrationFlow.from(RabbitStream.inboundAdapter(env)
+						.configureContainer(container -> container.queueName("my.stream")))
+				// ...
+				.get();
+	}
+
+	@Bean
+	IntegrationFlow superStream(Environment env) {
+		return IntegrationFlow.from(RabbitStream.inboundAdapter(env)
+						.configureContainer(container -> container.superStream("my.stream", "my.consumer")))
+				// ...
+				.get();
+	}
+}
+----
+====
+
+[[rmq-stream-outbound-channel-adapter]]
+==== RabbitMQ Stream Outbound Channel Adapter
+
+====
+[source, java]
+----
+@Bean
+IntegrationFlow outbound(RabbitStreamTemplate template) {
+    return f -> f
+            // ...
+            .handle(RabbitStream.outboundStreamAdapter(template));
+
+}
+----
+====

src/reference/asciidoc/whats-new.adoc

@@ -44,6 +44,11 @@ A `PostgresSubscribableChannel` allows to receive push notifications via `Postgr
 
 See <<./jdbc.adoc#postgresql-push,PostgreSQL: Receiving Push Notifications>> for more information.
 
+[[x6.0-rmq]]
+==== RabbitMQ Stream Queue Support
+
+The AMQP module has been enhanced to provide support for inbound and outbound channel adapters using RabbitMQ Stream Queues.
+See <<./amqp.adoc#rmq-streams,RabbitMQ Stream Queue Support>> for more information.
 
 [[x6.0-general]]
 === General Changes