Expose more AOT hints

* Add `@Reflective` to methods of `Pausable` and `ManageableLifecycle`
to give them access from Control Bus which uses SpEL invocation engine -
reflection, essentially
* Add proxy hint for the `RequestReplyExchanger`, which is used for
`gateway()` definition in Java DSL

spring-integration-core/src/main/java/org/springframework/integration/aot/CoreRuntimeHints.java

@@ -40,9 +40,9 @@
 import org.springframework.core.DecoratingProxy;
 import org.springframework.integration.context.IntegrationContextUtils;
 import org.springframework.integration.core.GenericSelector;
-import org.springframework.integration.core.Pausable;
 import org.springframework.integration.dsl.IntegrationFlow;
 import org.springframework.integration.gateway.MethodArgsHolder;
+import org.springframework.integration.gateway.RequestReplyExchanger;
 import org.springframework.integration.handler.AbstractReplyProducingMessageHandler;
 import org.springframework.integration.handler.DelayHandler;
 import org.springframework.integration.handler.GenericHandler;
@@ -55,7 +55,6 @@
 import org.springframework.integration.store.MessageMetadata;
 import org.springframework.integration.support.MutableMessage;
 import org.springframework.integration.support.MutableMessageHeaders;
-import org.springframework.integration.support.management.ManageableSmartLifecycle;
 import org.springframework.integration.transformer.GenericTransformer;
 import org.springframework.messaging.MessageHeaders;
 import org.springframework.messaging.support.ErrorMessage;
@@ -83,9 +82,7 @@ public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
 						IntegrationContextUtils.class,
 						MethodArgsHolder.class,
 						AbstractReplyProducingMessageHandler.RequestHandler.class,
-						ExpressionEvaluatingRoutingSlipRouteStrategy.RequestAndReply.class,
-						Pausable.class,
-						ManageableSmartLifecycle.class)
+						ExpressionEvaluatingRoutingSlipRouteStrategy.RequestAndReply.class)
 				.forEach(type ->
 						reflectionHints.registerType(type,
 								builder -> builder.withMembers(MemberCategory.INVOKE_PUBLIC_METHODS)));
@@ -137,6 +134,7 @@ public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
 
 		ProxyHints proxyHints = hints.proxies();
 
+		registerSpringJdkProxy(proxyHints, RequestReplyExchanger.class);
 		registerSpringJdkProxy(proxyHints, AbstractReplyProducingMessageHandler.RequestHandler.class);
 		registerSpringJdkProxy(proxyHints, IntegrationFlow.class, SmartLifecycle.class);
 	}

spring-integration-core/src/main/java/org/springframework/integration/core/Pausable.java

@@ -16,6 +16,7 @@
 
 package org.springframework.integration.core;
 
+import org.springframework.aot.hint.annotation.Reflective;
 import org.springframework.integration.support.management.ManageableLifecycle;
 import org.springframework.jmx.export.annotation.ManagedAttribute;
 import org.springframework.jmx.export.annotation.ManagedOperation;
@@ -26,6 +27,8 @@
  * messages.
  *
  * @author Gary Russell
+ * @author Artem Bilan
+ *
  * @since 5.0.3
  *
  */
@@ -35,12 +38,14 @@ public interface Pausable extends ManageableLifecycle {
 	 * Pause the endpoint.
 	 */
 	@ManagedOperation(description = "Pause the component")
+	@Reflective
 	void pause();
 
 	/**
 	 * Resume the endpoint if paused.
 	 */
 	@ManagedOperation(description = "Resume the component")
+	@Reflective
 	void resume();
 
 	/**
@@ -49,6 +54,7 @@ public interface Pausable extends ManageableLifecycle {
 	 * @since 5.4
 	 */
 	@ManagedAttribute(description = "Is the component paused?")
+	@Reflective
 	default boolean isPaused() {
 		throw new UnsupportedOperationException("This component does not implement this method");
 	}

spring-integration-core/src/main/java/org/springframework/integration/support/management/ManageableLifecycle.java

@@ -16,6 +16,7 @@
 
 package org.springframework.integration.support.management;
 
+import org.springframework.aot.hint.annotation.Reflective;
 import org.springframework.context.Lifecycle;
 import org.springframework.jmx.export.annotation.ManagedAttribute;
 import org.springframework.jmx.export.annotation.ManagedOperation;
@@ -24,20 +25,25 @@
  * Makes {@link Lifecycle} methods manageable.
  *
  * @author Gary Russell
+ * @author Artem Bilan
+ *
  * @since 5.4
  *
  */
 public interface ManageableLifecycle extends Lifecycle {
 
 	@ManagedOperation(description = "Start the component")
+	@Reflective
 	@Override
 	void start();
 
 	@ManagedOperation(description = "Stop the component")
+	@Reflective
 	@Override
 	void stop();
 
 	@ManagedAttribute(description = "Is the component running?")
+	@Reflective
 	@Override
 	boolean isRunning();