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Consistent local synchronization in getObjectFromFactoryBean

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Closes gh-35545
This commit is contained in:
Juergen Hoeller
2025-10-03 17:29:14 +02:00
parent 332953c9a4
commit ecd3dd8883
1 changed files with 34 additions and 39 deletions
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spring-beans/src/main/java/org/springframework/beans/factory/support/FactoryBeanRegistrySupport.java
+34 -39
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@@ -128,53 +128,48 @@ public abstract class FactoryBeanRegistrySupport extends DefaultSingletonBeanReg
locked = (lockFlag && this.singletonLock.tryLock());
}
try {
Object object = this.factoryBeanObjectCache.get(beanName);
if (object == null) {
if (locked) {
// The common case: within general singleton lock.
// Defensively synchronize against non-thread-safe FactoryBean.getObject() implementations,
// potentially to be called from a background thread while the main thread currently calls
// the same getObject() method within the singleton lock.
synchronized (factory) {
Object object = this.factoryBeanObjectCache.get(beanName);
if (object == null) {
object = doGetObjectFromFactoryBean(factory, beanName);
}
else {
// Fall back to local synchronization on the given FactoryBean instance,
// as a defensive measure for non-thread-safe FactoryBean implementations.
synchronized (factory) {
object = doGetObjectFromFactoryBean(factory, beanName);
// Only post-process and store if not put there already during getObject() call above
// (for example, because of circular reference processing triggered by custom getBean calls)
Object alreadyThere = this.factoryBeanObjectCache.get(beanName);
if (alreadyThere != null) {
object = alreadyThere;
}
}
// Only post-process and store if not put there already during getObject() call above
// (for example, because of circular reference processing triggered by custom getBean calls)
Object alreadyThere = this.factoryBeanObjectCache.get(beanName);
if (alreadyThere != null) {
object = alreadyThere;
}
else {
if (shouldPostProcess) {
if (locked) {
if (isSingletonCurrentlyInCreation(beanName)) {
// Temporarily return non-post-processed object, not storing it yet
return object;
}
beforeSingletonCreation(beanName);
}
try {
object = postProcessObjectFromFactoryBean(object, beanName);
}
catch (Throwable ex) {
throw new BeanCreationException(beanName,
"Post-processing of FactoryBean's singleton object failed", ex);
}
finally {
else {
if (shouldPostProcess) {
if (locked) {
afterSingletonCreation(beanName);
if (isSingletonCurrentlyInCreation(beanName)) {
// Temporarily return non-post-processed object, not storing it yet
return object;
}
beforeSingletonCreation(beanName);
}
try {
object = postProcessObjectFromFactoryBean(object, beanName);
}
catch (Throwable ex) {
throw new BeanCreationException(beanName,
"Post-processing of FactoryBean's singleton object failed", ex);
}
finally {
if (locked) {
afterSingletonCreation(beanName);
}
}
}
}
if (containsSingleton(beanName)) {
this.factoryBeanObjectCache.put(beanName, object);
if (containsSingleton(beanName)) {
this.factoryBeanObjectCache.put(beanName, object);
}
}
}
return object;
}
return object;
}
finally {
if (locked) {