GH-188: Expose @CircuitBreaker(recover) attribute

Fixes: #188
Issue link: #188

All the logic to determine a recover method is there.
We are just missing the `CircuitBreaker(recover)` attribute with an `@AliasFor(annotation = Retryable.class)`

Author: artembilan

src/main/java/org/springframework/retry/annotation/CircuitBreaker.java

@@ -190,4 +190,13 @@
 	 */
 	boolean throwLastExceptionOnExhausted() default false;
 
+	/**
+	 * Name of method in this class to use for recover. Method had to be marked with
+	 * {@link Recover} annotation.
+	 * @return the name of recover method
+	 * @since 2.0.9
+	 */
+	@AliasFor(annotation = Retryable.class)
+	String recover() default "";
+
 }

src/test/java/org/springframework/retry/stats/CircuitBreakerInterceptorStatisticsTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2023 the original author or authors.
+ * Copyright 2006-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,6 +34,7 @@
 
 /**
  * @author Dave Syer
+ * @author Artem Bilan
  *
  */
 public class CircuitBreakerInterceptorStatisticsTests {
@@ -106,7 +107,7 @@ protected static class Service {
 
 		private RetryContext status;
 
-		@CircuitBreaker(label = "test", maxAttempts = 1)
+		@CircuitBreaker(label = "test", maxAttempts = 1, recover = "recover")
 		public Object service(String input) throws Exception {
 			this.status = RetrySynchronizationManager.getContext();
 			Integer attempts = (Integer) status.getAttribute("attempts");
@@ -122,11 +123,16 @@ public Object service(String input) throws Exception {
 		}
 
 		@Recover
-		public Object recover() {
+		public Object recover(String input) {
 			this.status.setAttribute(RECOVERED, true);
 			return RECOVERED;
 		}
 
+		@Recover
+		public Object anotherRecover(Object input) {
+			return null;
+		}
+
 		public boolean isOpen() {
 			return this.status != null && this.status.getAttribute("open") == Boolean.TRUE;
 		}