Add reflection hints for AspectJ advice methods

Closes gh-28711

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/AspectJBeanFactoryInitializationAotProcessor.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.aop.aspectj.annotation;
+
+import java.util.List;
+
+import org.springframework.aop.Advisor;
+import org.springframework.aop.aspectj.AbstractAspectJAdvice;
+import org.springframework.aot.generate.GenerationContext;
+import org.springframework.aot.hint.ExecutableMode;
+import org.springframework.aot.hint.ReflectionHints;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationAotContribution;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationAotProcessor;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationCode;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.lang.Nullable;
+
+/**
+ * {@link BeanFactoryInitializationAotProcessor} implementation responsible for registering
+ * hints for AOP advices.
+ *
+ * @author Sebastien Deleuze
+ * @since 6.0.11
+ */
+class AspectJBeanFactoryInitializationAotProcessor implements BeanFactoryInitializationAotProcessor {
+
+	@Nullable
+	@Override
+	public BeanFactoryInitializationAotContribution processAheadOfTime(ConfigurableListableBeanFactory beanFactory) {
+		BeanFactoryAspectJAdvisorsBuilder builder = new BeanFactoryAspectJAdvisorsBuilder(beanFactory);
+		List<Advisor> advisors =  builder.buildAspectJAdvisors();
+		return advisors.isEmpty() ? null : new AspectContribution(advisors);
+	}
+
+
+	private static class AspectContribution implements BeanFactoryInitializationAotContribution {
+
+		private final List<Advisor> advisors;
+
+		public AspectContribution(List<Advisor> advisors) {
+			this.advisors = advisors;
+		}
+
+		@Override
+		public void applyTo(GenerationContext generationContext, BeanFactoryInitializationCode beanFactoryInitializationCode) {
+			ReflectionHints reflectionHints = generationContext.getRuntimeHints().reflection();
+			for (Advisor advisor : this.advisors) {
+				if (advisor.getAdvice() instanceof AbstractAspectJAdvice aspectJAdvice) {
+					reflectionHints.registerMethod(aspectJAdvice.getAspectJAdviceMethod(), ExecutableMode.INVOKE);
+				}
+			}
+		}
+
+	}
+
+}

spring-aop/src/main/resources/META-INF/spring/aot.factories

@@ -1,2 +1,5 @@
 org.springframework.beans.factory.aot.BeanRegistrationAotProcessor=\
 org.springframework.aop.scope.ScopedProxyBeanRegistrationAotProcessor
+
+org.springframework.beans.factory.aot.BeanFactoryInitializationAotProcessor= \
+org.springframework.aop.aspectj.annotation.AspectJBeanFactoryInitializationAotProcessor

spring-aop/src/test/java/org/springframework/aop/aspectj/annotation/AspectJBeanFactoryInitializationAotProcessorTests.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2002-2023 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.aop.aspectj.annotation;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Pointcut;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aot.generate.GenerationContext;
+import org.springframework.aot.hint.predicate.RuntimeHintsPredicates;
+import org.springframework.aot.test.generate.TestGenerationContext;
+import org.springframework.beans.factory.aot.BeanFactoryInitializationAotContribution;
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+import org.springframework.beans.factory.support.RootBeanDefinition;
+import org.springframework.lang.Nullable;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link AspectJBeanFactoryInitializationAotProcessor}.
+ *
+ * @author Sebastien Deleuze
+ */
+class AspectJBeanFactoryInitializationAotProcessorTests {
+
+	private final GenerationContext generationContext = new TestGenerationContext();
+
+	@Test
+	void shouldSkipEmptyClass() {
+		assertThat(createContribution(EmptyClass.class)).isNull();
+	}
+
+	@Test
+	void shouldProcessAspect() {
+		process(TestAspect.class);
+		assertThat(RuntimeHintsPredicates.reflection().onMethod(TestAspect.class, "alterReturnValue").invoke())
+				.accepts(this.generationContext.getRuntimeHints());
+	}
+
+	private void process(Class<?> beanClass) {
+		BeanFactoryInitializationAotContribution contribution = createContribution(beanClass);
+		if (contribution != null) {
+			contribution.applyTo(this.generationContext, mock());
+		}
+	}
+
+	@Nullable
+	private static BeanFactoryInitializationAotContribution createContribution(Class<?> beanClass) {
+		DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
+		beanFactory.registerBeanDefinition(beanClass.getName(), new RootBeanDefinition(beanClass));
+		return new AspectJBeanFactoryInitializationAotProcessor().processAheadOfTime(beanFactory);
+	}
+
+
+	static class EmptyClass { }
+
+	@Aspect
+	static class TestAspect {
+
+		@Around("pointcut()")
+		public Object alterReturnValue(ProceedingJoinPoint joinPoint) throws Throwable {
+			joinPoint.proceed();
+			return "A-from-aspect";
+		}
+
+		@Pointcut("execution(* com.example.aspect.Test*.methodA(..))")
+		private void pointcut() {
+		}
+
+	}
+
+}