Ensure private init/destroy method is invoked only once

Closes gh-28083

Author: sbrannen

spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractAutowireCapableBeanFactory.java

@@ -1844,7 +1844,7 @@ protected void invokeInitMethods(String beanName, Object bean, @Nullable RootBea
 			throws Throwable {
 
 		boolean isInitializingBean = (bean instanceof InitializingBean);
-		if (isInitializingBean && (mbd == null || !mbd.isExternallyManagedInitMethod("afterPropertiesSet"))) {
+		if (isInitializingBean && (mbd == null || !mbd.hasAnyExternallyManagedInitMethod("afterPropertiesSet"))) {
 			if (logger.isTraceEnabled()) {
 				logger.trace("Invoking afterPropertiesSet() on bean with name '" + beanName + "'");
 			}
@@ -1868,7 +1868,7 @@ protected void invokeInitMethods(String beanName, Object bean, @Nullable RootBea
 			String initMethodName = mbd.getInitMethodName();
 			if (StringUtils.hasLength(initMethodName) &&
 					!(isInitializingBean && "afterPropertiesSet".equals(initMethodName)) &&
-					!mbd.isExternallyManagedInitMethod(initMethodName)) {
+					!mbd.hasAnyExternallyManagedInitMethod(initMethodName)) {
 				invokeCustomInitMethod(beanName, bean, mbd);
 			}
 		}

spring-beans/src/main/java/org/springframework/beans/factory/support/DisposableBeanAdapter.java

@@ -52,6 +52,7 @@
  * @author Juergen Hoeller
  * @author Costin Leau
  * @author Stephane Nicoll
+ * @author Sam Brannen
  * @since 2.0
  * @see AbstractBeanFactory
  * @see org.springframework.beans.factory.DisposableBean
@@ -109,12 +110,12 @@ public DisposableBeanAdapter(Object bean, String beanName, RootBeanDefinition be
 		this.beanName = beanName;
 		this.nonPublicAccessAllowed = beanDefinition.isNonPublicAccessAllowed();
 		this.invokeDisposableBean = (bean instanceof DisposableBean &&
-				!beanDefinition.isExternallyManagedDestroyMethod(DESTROY_METHOD_NAME));
+				!beanDefinition.hasAnyExternallyManagedDestroyMethod(DESTROY_METHOD_NAME));
 
 		String destroyMethodName = inferDestroyMethodIfNecessary(bean, beanDefinition);
 		if (destroyMethodName != null &&
 				!(this.invokeDisposableBean && DESTROY_METHOD_NAME.equals(destroyMethodName)) &&
-				!beanDefinition.isExternallyManagedDestroyMethod(destroyMethodName)) {
+				!beanDefinition.hasAnyExternallyManagedDestroyMethod(destroyMethodName)) {
 
 			this.invokeAutoCloseable = (bean instanceof AutoCloseable && CLOSE_METHOD_NAME.equals(destroyMethodName));
 			if (!this.invokeAutoCloseable) {

spring-beans/src/main/java/org/springframework/beans/factory/support/RootBeanDefinition.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 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.
@@ -49,6 +49,7 @@
  *
  * @author Rod Johnson
  * @author Juergen Hoeller
+ * @author Sam Brannen
  * @see GenericBeanDefinition
  * @see ChildBeanDefinition
  */
@@ -479,6 +480,36 @@ public boolean isExternallyManagedInitMethod(String initMethod) {
 		}
 	}
 
+	/**
+	 * Determine if the given method name indicates an externally managed
+	 * initialization method, regardless of method visibility.
+	 * <p>In contrast to {@link #isExternallyManagedInitMethod(String)}, this
+	 * method also returns {@code true} if there is a {@code private} external
+	 * init method that has been
+	 * {@linkplain #registerExternallyManagedInitMethod(String) registered}
+	 * using a fully qualified method name instead of a simple method name.
+	 * @since 5.3.17
+	 */
+	boolean hasAnyExternallyManagedInitMethod(String initMethod) {
+		synchronized (this.postProcessingLock) {
+			if (isExternallyManagedInitMethod(initMethod)) {
+				return true;
+			}
+			if (this.externallyManagedInitMethods != null) {
+				for (String candidate : this.externallyManagedInitMethods) {
+					int indexOfDot = candidate.lastIndexOf(".");
+					if (indexOfDot >= 0) {
+						String methodName = candidate.substring(indexOfDot + 1);
+						if (methodName.equals(initMethod)) {
+							return true;
+						}
+					}
+				}
+			}
+			return false;
+		}
+	}
+
 	/**
 	 * Return all externally managed initialization methods (as an immutable Set).
 	 * @since 5.3.11
@@ -513,6 +544,36 @@ public boolean isExternallyManagedDestroyMethod(String destroyMethod) {
 		}
 	}
 
+	/**
+	 * Determine if the given method name indicates an externally managed
+	 * destruction method, regardless of method visibility.
+	 * <p>In contrast to {@link #isExternallyManagedDestroyMethod(String)}, this
+	 * method also returns {@code true} if there is a {@code private} external
+	 * destroy method that has been
+	 * {@linkplain #registerExternallyManagedDestroyMethod(String) registered}
+	 * using a fully qualified method name instead of a simple method name.
+	 * @since 5.3.17
+	 */
+	boolean hasAnyExternallyManagedDestroyMethod(String destroyMethod) {
+		synchronized (this.postProcessingLock) {
+			if (isExternallyManagedDestroyMethod(destroyMethod)) {
+				return true;
+			}
+			if (this.externallyManagedDestroyMethods != null) {
+				for (String candidate : this.externallyManagedDestroyMethods) {
+					int indexOfDot = candidate.lastIndexOf(".");
+					if (indexOfDot >= 0) {
+						String methodName = candidate.substring(indexOfDot + 1);
+						if (methodName.equals(destroyMethod)) {
+							return true;
+						}
+					}
+				}
+			}
+			return false;
+		}
+	}
+
 	/**
 	 * Return all externally managed destruction methods (as an immutable Set).
 	 * @since 5.3.11