GH-1383: Deprecate Remoting

Resolves https://github.com/spring-projects/spring-amqp/issues/1383

spring-amqp/src/main/java/org/springframework/amqp/remoting/client/AmqpClientInterceptor.java

@@ -38,7 +38,9 @@ import org.springframework.remoting.support.RemoteInvocationResult;
  * @see org.springframework.amqp.remoting.service.AmqpInvokerServiceExporter
  * @see AmqpProxyFactoryBean
  * @see org.springframework.remoting.RemoteAccessException
+ * @deprecated will be removed in 3.0.0.
  */
+@Deprecated
 public class AmqpClientInterceptor extends RemoteAccessor implements MethodInterceptor {
 
 	private AmqpTemplate amqpTemplate;

spring-amqp/src/main/java/org/springframework/amqp/remoting/client/AmqpProxyFactoryBean.java

@@ -40,7 +40,9 @@ import org.springframework.beans.factory.InitializingBean;
  * @see AmqpClientInterceptor
  * @see org.springframework.remoting.rmi.RmiServiceExporter
  * @see org.springframework.remoting.RemoteAccessException
+ * @deprecated will be removed in 3.0.0.
  */
+@Deprecated
 public class AmqpProxyFactoryBean extends AmqpClientInterceptor implements FactoryBean<Object>, InitializingBean {
 
 	private Object serviceProxy;

spring-amqp/src/main/java/org/springframework/amqp/remoting/service/AmqpInvokerServiceExporter.java

@@ -53,7 +53,9 @@ import org.springframework.remoting.support.RemoteInvocationResult;
  * @author Gary Russell
  * @author Artem Bilan
  * @since 1.2
+ * @deprecated will be removed in 3.0.0.
  */
+@Deprecated
 public class AmqpInvokerServiceExporter extends RemoteInvocationBasedExporter implements MessageListener {
 
 	private AmqpTemplate amqpTemplate;

spring-amqp/src/test/java/org/springframework/amqp/remoting/RemotingTest.java

@@ -29,8 +29,6 @@ import org.springframework.amqp.core.Address;
 import org.springframework.amqp.core.AmqpTemplate;
 import org.springframework.amqp.core.Message;
 import org.springframework.amqp.core.MessageProperties;
-import org.springframework.amqp.remoting.client.AmqpProxyFactoryBean;
-import org.springframework.amqp.remoting.service.AmqpInvokerServiceExporter;
 import org.springframework.amqp.remoting.testhelper.AbstractAmqpTemplate;
 import org.springframework.amqp.remoting.testhelper.SentSavingTemplate;
 import org.springframework.amqp.remoting.testservice.GeneralException;
@@ -49,11 +47,12 @@ import org.springframework.remoting.support.RemoteInvocation;
  * @author Gary Russell
  * @since 1.2
  */
+@SuppressWarnings("deprecation")
 public class RemotingTest {
 
 	private TestServiceInterface riggedProxy;
 
-	private AmqpInvokerServiceExporter serviceExporter;
+	private org.springframework.amqp.remoting.service.AmqpInvokerServiceExporter serviceExporter;
 
 	/**
 	 * Set up a rig of directly wired-up proxy and service listener so that both can be tested together without needing
@@ -63,14 +62,15 @@ public class RemotingTest {
 	public void initializeTestRig() {
 		// Set up the service
 		TestServiceInterface testService = new TestServiceImpl();
-		this.serviceExporter = new AmqpInvokerServiceExporter();
+		this.serviceExporter = new org.springframework.amqp.remoting.service.AmqpInvokerServiceExporter();
 		final SentSavingTemplate sentSavingTemplate = new SentSavingTemplate();
 		this.serviceExporter.setAmqpTemplate(sentSavingTemplate);
 		this.serviceExporter.setService(testService);
 		this.serviceExporter.setServiceInterface(TestServiceInterface.class);
 
 		// Set up the client
-		AmqpProxyFactoryBean amqpProxyFactoryBean = new AmqpProxyFactoryBean();
+		org.springframework.amqp.remoting.client.AmqpProxyFactoryBean amqpProxyFactoryBean =
+				new org.springframework.amqp.remoting.client.AmqpProxyFactoryBean();
 		amqpProxyFactoryBean.setServiceInterface(TestServiceInterface.class);
 		AmqpTemplate directForwardingTemplate = new AbstractAmqpTemplate() {
 			@Override

src/reference/asciidoc/amqp.adoc

@@ -4581,6 +4581,10 @@ See <<json-complex>> for more information.
 [[remoting]]
 ===== Spring Remoting with AMQP
 
+IMPORTANT: This feature is deprecated and will be removed in 3.0.
+It has been superseded for a long time by <<annotation-error-handling>> with the `returnExceptions` being set to true, and configuring a `RemoteInvocationAwareMessageConverterAdapter` on the sending side.
+See <<annotation-error-handling>> for more information.
+
 The Spring Framework has a general remoting capability, allowing https://docs.spring.io/spring/docs/current/spring-framework-reference/html/remoting.html[Remote Procedure Calls (RPC)] that use various transports.
 Spring-AMQP supports a similar mechanism with a `AmqpProxyFactoryBean` on the client and a `AmqpInvokerServiceExporter` on the server.
 This provides RPC over AMQP.

src/reference/asciidoc/whats-new.adoc

@@ -15,3 +15,8 @@ See <<async-annotation-driven-enable-signature>> for more information.
 
 A new property `recoverManualDeclarations` allows recovery of manually declared queues/exchanges/bindings.
 See <<declarable-recovery>> for more information.
+
+==== Remoting Support
+
+Support remoting using Spring Framework's RMI support is deprecated and will be removed in 3.0.
+See <<remoting>> for more information.