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Spring源碼解析02

createBean 

@Override
protected Object createBean(String beanName, RootBeanDefinition mbd, @Nullable Object[] args)
		throws BeanCreationException {

	//忽略部分代碼
	....

	// MethodOverrides 主要有lookup-method和replaced-method 具體後續再講
	try {
		mbdToUse.prepareMethodOverrides();
	}
	catch (BeanDefinitionValidationException ex) {
		throw new BeanDefinitionStoreException(mbdToUse.getResourceDescription(),
				beanName, "Validation of method overrides failed", ex);
	}

//這個方法沒看懂，網上說是aop，但是看了aop相關的，是在初始化完成之後，才進行aop的切入，postProcessAfterInitialization
	try {
		// Give BeanPostProcessors a chance to return a proxy instead of the target bean instance.
		Object bean = resolveBeforeInstantiation(beanName, mbdToUse);
		if (bean != null) {
			return bean;
		}
	}
	catch (Throwable ex) {
		throw new BeanCreationException(mbdToUse.getResourceDescription(), beanName,
				"BeanPostProcessor before instantiation of bean failed", ex);
	}

//真正的建立方法
	try {
		Object beanInstance = doCreateBean(beanName, mbdToUse, args);
		if (logger.isDebugEnabled()) {
			logger.debug("Finished creating instance of bean '" + beanName + "'");
		}
		return beanInstance;
	}
	catch (BeanCreationException | ImplicitlyAppearedSingletonException ex) {
		throw ex;
	}
	catch (Throwable ex) {
		throw new BeanCreationException(
				mbdToUse.getResourceDescription(), beanName, "Unexpected exception during bean creation", ex);
	}
}
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doCreateBean 

protected Object doCreateBean(final String beanName, final RootBeanDefinition mbd, final @Nullable Object[] args)
			throws BeanCreationException {

		// Instantiate the bean.
		BeanWrapper instanceWrapper = null;
		if (mbd.isSingleton()) {
			instanceWrapper = this.factoryBeanInstanceCache.remove(beanName);
		}
		if (instanceWrapper == null) {
			instanceWrapper = createBeanInstance(beanName, mbd, args);
		}
		
        
        
        // 将僅僅完成了執行個體化的bean暴露出去，使得其他bean在擷取該bean的時候能從三級緩存中擷取到。防止循環依賴
		boolean earlySingletonExposure = (mbd.isSingleton() && this.allowCircularReferences &&
				isSingletonCurrentlyInCreation(beanName));
		if (earlySingletonExposure) {
			if (logger.isDebugEnabled()) {
				logger.debug("Eagerly caching bean '" + beanName +
						"' to allow for resolving potential circular references");
			}
			addSingletonFactory(beanName, () -> getEarlyBeanReference(beanName, mbd, bean));
		}

		// Initialize the bean instance.
		Object exposedObject = bean;
		try {
		    //
			populateBean(beanName, mbd, instanceWrapper);
			exposedObject = initializeBean(beanName, exposedObject, mbd);
		}
		catch (Throwable ex) {
			if (ex instanceof BeanCreationException && beanName.equals(((BeanCreationException) ex).getBeanName())) {
				throw (BeanCreationException) ex;
			}
			else {
				throw new BeanCreationException(
						mbd.getResourceDescription(), beanName, "Initialization of bean failed", ex);
			}
		}

		
		// 忽略部分代碼...

		// Register bean as disposable.
		try {
			registerDisposableBeanIfNecessary(beanName, bean, mbd);
		}
		catch (BeanDefinitionValidationException ex) {
			throw new BeanCreationException(
					mbd.getResourceDescription(), beanName, "Invalid destruction signature", ex);
		}

		return exposedObject;
	}
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  • 按照上面的代碼整理，流程大緻如下：
  1. 調用createBeanInstance方法，執行個體化bean
  2. 如果允許提前曝光的話，将完成執行個體化的Bean加入緩存中，提前曝光出去
  3. populateBean:對于bean中的屬性進行設定，如@Value,依賴的bean等
  4. initializeBean:完成bean的初始化
  5. registerDisposableBeanIfNecessary：注冊銷毀的回調函數

createBeanInstance:執行個體化bean 

protected BeanWrapper createBeanInstance(String beanName, RootBeanDefinition mbd, @Nullable Object[] args) {
		// Make sure bean class is actually resolved at this point.
		Class<?> beanClass = resolveBeanClass(mbd, beanName);

		if (beanClass != null && !Modifier.isPublic(beanClass.getModifiers()) && !mbd.isNonPublicAccessAllowed()) {
			throw new BeanCreationException(mbd.getResourceDescription(), beanName,
					"Bean class isn't public, and non-public access not allowed: " + beanClass.getName());
		}

		Supplier<?> instanceSupplier = mbd.getInstanceSupplier();
		if (instanceSupplier != null) {
			return obtainFromSupplier(instanceSupplier, beanName);
		}

		if (mbd.getFactoryMethodName() != null)  {
			return instantiateUsingFactoryMethod(beanName, mbd, args);
		}

		// Shortcut when re-creating the same bean...
		boolean resolved = false;
		boolean autowireNecessary = false;
		if (args == null) {
			synchronized (mbd.constructorArgumentLock) {
				if (mbd.resolvedConstructorOrFactoryMethod != null) {
					resolved = true;
					autowireNecessary = mbd.constructorArgumentsResolved;
				}
			}
		}
		if (resolved) {
			if (autowireNecessary) {
				return autowireConstructor(beanName, mbd, null, null);
			}
			else {
				return instantiateBean(beanName, mbd);
			}
		}

		// Candidate constructors for autowiring?
		Constructor<?>[] ctors = determineConstructorsFromBeanPostProcessors(beanClass, beanName);
		if (ctors != null || mbd.getResolvedAutowireMode() == AUTOWIRE_CONSTRUCTOR ||
				mbd.hasConstructorArgumentValues() || !ObjectUtils.isEmpty(args))  {
			return autowireConstructor(beanName, mbd, ctors, args);
		}

		// No special handling: simply use no-arg constructor.
		return instantiateBean(beanName, mbd);
	}
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  1. instanceSupplier:不清楚
  2. 如果bean上有設定FactoryMethod，直接使用FactoryMethod指定的方法來執行個體化bean
  3. 根據beanDefition中的參數決定使用的構造函數來執行個體化bean
    1. autowireConstructor：帶參數執行個體化
    2. instantiateBean：預設方法
  5. 兩種方法最終調用的都是 
getInstantiationStrategy().instantiate(mbd, beanName, parent);
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執行個體化的政策有兩種：反射執行個體化+cglib建立proxy 
public Object instantiate(RootBeanDefinition bd, @Nullable String beanName, BeanFactory owner) {
		// Don't override the class with CGLIB if no overrides.
		if (!bd.hasMethodOverrides()) {
			Constructor<?> constructorToUse;
			synchronized (bd.constructorArgumentLock) {
				constructorToUse = (Constructor<?>) bd.resolvedConstructorOrFactoryMethod;
				if (constructorToUse == null) {
					final Class<?> clazz = bd.getBeanClass();
					if (clazz.isInterface()) {
						throw new BeanInstantiationException(clazz, "Specified class is an interface");
					}
					try {
						if (System.getSecurityManager() != null) {
							constructorToUse = AccessController.doPrivileged(
									(PrivilegedExceptionAction<Constructor<?>>) clazz::getDeclaredConstructor);
						}
						else {
							constructorToUse =	clazz.getDeclaredConstructor();
						}
						bd.resolvedConstructorOrFactoryMethod = constructorToUse;
					}
					catch (Throwable ex) {
						throw new BeanInstantiationException(clazz, "No default constructor found", ex);
					}
				}
			}
			return BeanUtils.instantiateClass(constructorToUse);
		}
		else {
			// Must generate CGLIB subclass.
			return instantiateWithMethodInjection(bd, beanName, owner);
		}
	}
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  • 上面的代碼内容如下：
  1. beanDefition中沒有MethodOverrides(也就是之前說的lookup-method和replaced-method)的情況下，直接使用反射的方式執行個體化
  2. 如果存在MethodOverrides的話，需要使用CGLIB的方式對bean進行修改 
public Object instantiate(@Nullable Constructor<?> ctor, @Nullable Object... args) {
			Class<?> subclass = createEnhancedSubclass(this.beanDefinition);
			Object instance;
			if (ctor == null) {
				instance = BeanUtils.instantiateClass(subclass);
			}
			else {
				try {
					Constructor<?> enhancedSubclassConstructor = subclass.getConstructor(ctor.getParameterTypes());
					instance = enhancedSubclassConstructor.newInstance(args);
				}
				catch (Exception ex) {
					throw new BeanInstantiationException(this.beanDefinition.getBeanClass(),
							"Failed to invoke constructor for CGLIB enhanced subclass [" + subclass.getName() + "]", ex);
				}
			}
			// SPR-10785: set callbacks directly on the instance instead of in the
			// enhanced class (via the Enhancer) in order to avoid memory leaks.
			Factory factory = (Factory) instance;
			factory.setCallbacks(new Callback[] {NoOp.INSTANCE,
					new LookupOverrideMethodInterceptor(this.beanDefinition, this.owner),
					new ReplaceOverrideMethodInterceptor(this.beanDefinition, this.owner)});
			return instance;
		}
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往proxyFactory中放入LookupOverrideMethodInterceptor和ReplaceOverrideMethodInterceptor,使得lookup-method和replaced-method生效。

earlySingletonExposure：提前曝光bean 

boolean earlySingletonExposure = (mbd.isSingleton() && this.allowCircularReferences &&
				isSingletonCurrentlyInCreation(beanName));
				
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提前曝光的條件=bean是singleton&&目前允許循環依賴&&目前bean在建立中

populateBean：為目前的bean設定屬性 

protected void populateBean(String beanName, RootBeanDefinition mbd, @Nullable BeanWrapper bw) {
		if (bw == null) {
			if (mbd.hasPropertyValues()) {
				throw new BeanCreationException(
						mbd.getResourceDescription(), beanName, "Cannot apply property values to null instance");
			}
			else {
				// Skip property population phase for null instance.
				return;
			}
		}

		// Give any InstantiationAwareBeanPostProcessors the opportunity to modify the
		// state of the bean before properties are set. This can be used, for example,
		// to support styles of field injection.
		boolean continueWithPropertyPopulation = true;

		if (!mbd.isSynthetic() && hasInstantiationAwareBeanPostProcessors()) {
			for (BeanPostProcessor bp : getBeanPostProcessors()) {
				if (bp instanceof InstantiationAwareBeanPostProcessor) {
					InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) bp;
					if (!ibp.postProcessAfterInstantiation(bw.getWrappedInstance(), beanName)) {
						continueWithPropertyPopulation = false;
						break;
					}
				}
			}
		}

		if (!continueWithPropertyPopulation) {
			return;
		}

		PropertyValues pvs = (mbd.hasPropertyValues() ? mbd.getPropertyValues() : null);

		if (mbd.getResolvedAutowireMode() == AUTOWIRE_BY_NAME || mbd.getResolvedAutowireMode() == AUTOWIRE_BY_TYPE) {
			MutablePropertyValues newPvs = new MutablePropertyValues(pvs);
			// Add property values based on autowire by name if applicable.
			if (mbd.getResolvedAutowireMode() == AUTOWIRE_BY_NAME) {
				autowireByName(beanName, mbd, bw, newPvs);
			}
			// Add property values based on autowire by type if applicable.
			if (mbd.getResolvedAutowireMode() == AUTOWIRE_BY_TYPE) {
				autowireByType(beanName, mbd, bw, newPvs);
			}
			pvs = newPvs;
		}

		boolean hasInstAwareBpps = hasInstantiationAwareBeanPostProcessors();
		boolean needsDepCheck = (mbd.getDependencyCheck() != AbstractBeanDefinition.DEPENDENCY_CHECK_NONE);

		if (hasInstAwareBpps || needsDepCheck) {
			if (pvs == null) {
				pvs = mbd.getPropertyValues();
			}
			PropertyDescriptor[] filteredPds = filterPropertyDescriptorsForDependencyCheck(bw, mbd.allowCaching);
			if (hasInstAwareBpps) {
				for (BeanPostProcessor bp : getBeanPostProcessors()) {
					if (bp instanceof InstantiationAwareBeanPostProcessor) {
						InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) bp;
						pvs = ibp.postProcessPropertyValues(pvs, filteredPds, bw.getWrappedInstance(), beanName);
						if (pvs == null) {
							return;
						}
					}
				}
			}
			if (needsDepCheck) {
				checkDependencies(beanName, mbd, filteredPds, pvs);
			}
		}

		if (pvs != null) {
			applyPropertyValues(beanName, mbd, bw, pvs);
		}
	}
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具體代碼不分析，根據我的debug操作時，@AutoWired和@Value和@Resource等注解起作用的功能為

for (BeanPostProcessor bp : getBeanPostProcessors()) {
	if (bp instanceof InstantiationAwareBeanPostProcessor) {
		InstantiationAwareBeanPostProcessor ibp = (InstantiationAwareBeanPostProcessor) bp;
		pvs = ibp.postProcessPropertyValues(pvs, filteredPds, bw.getWrappedInstance(), beanName);
		if (pvs == null) {
			return;
		}
	}
}
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周遊目前的BeanPostProcessor清單，運作他們的postProcessPropertyValues

@Autowired @Value:AutoWireAnnotationBeanPostProcessor

@Resource:CommonAnnotationBeanPostProcessor

initializeBean:初始化bean 

protected Object initializeBean(final String beanName, final Object bean, @Nullable RootBeanDefinition mbd) {
		if (System.getSecurityManager() != null) {
			AccessController.doPrivileged((PrivilegedAction<Object>) () -> {
				invokeAwareMethods(beanName, bean);
				return null;
			}, getAccessControlContext());
		}
		else {
			invokeAwareMethods(beanName, bean);
		}

		Object wrappedBean = bean;
		if (mbd == null || !mbd.isSynthetic()) {
			wrappedBean = applyBeanPostProcessorsBeforeInitialization(wrappedBean, beanName);
		}

		try {
			invokeInitMethods(beanName, wrappedBean, mbd);
		}
		catch (Throwable ex) {
			throw new BeanCreationException(
					(mbd != null ? mbd.getResourceDescription() : null),
					beanName, "Invocation of init method failed", ex);
		}
		if (mbd == null || !mbd.isSynthetic()) {
			wrappedBean = applyBeanPostProcessorsAfterInitialization(wrappedBean, beanName);
		}

		return wrappedBean;
	}
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initializeBean的結構很清晰

  1. invokeAwareMethods
  2. 周遊執行BeanPostProcessor中的postProcessBeforeInitialization
  3. invokeInitMethods
  4. 周遊執行BeanPostProcessor中的postProcessAfterInitialization
invokeAwareMethods 
private void invokeAwareMethods(final String beanName, final Object bean) {
		if (bean instanceof Aware) {
			if (bean instanceof BeanNameAware) {
				((BeanNameAware) bean).setBeanName(beanName);
			}
			if (bean instanceof BeanClassLoaderAware) {
				ClassLoader bcl = getBeanClassLoader();
				if (bcl != null) {
					((BeanClassLoaderAware) bean).setBeanClassLoader(bcl);
				}
			}
			if (bean instanceof BeanFactoryAware) {
				((BeanFactoryAware) bean).setBeanFactory(AbstractAutowireCapableBeanFactory.this);
			}
		}
	}
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從上面的代碼來看，僅僅對BeanNameAware、BeanClassLoaderAware、BeanFactoryAware這三種接口的支援。但是ApplicationContextAware之類的是怎麼實作的呢

周遊執行BeanPostProcessor中的postProcessBeforeInitialization

接着invokeAwareMethods的問題， 在AbstractApplicationContext的prepareBeanFactory中有這樣一段

protected void prepareBeanFactory(ConfigurableListableBeanFactory beanFactory) {
	.....

	// Configure the bean factory with context callbacks.
	beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this));
	beanFactory.ignoreDependencyInterface(EnvironmentAware.class);
	beanFactory.ignoreDependencyInterface(EmbeddedValueResolverAware.class);
	beanFactory.ignoreDependencyInterface(ResourceLoaderAware.class);
	beanFactory.ignoreDependencyInterface(ApplicationEventPublisherAware.class);
	beanFactory.ignoreDependencyInterface(MessageSourceAware.class);
	beanFactory.ignoreDependencyInterface(ApplicationContextAware.class);
	.....
}
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忽略了一系列Aware，注冊了一個ApplicationContextAwareProcessor

@Override
	@Nullable
	public Object postProcessBeforeInitialization(final Object bean, String beanName) throws BeansException {
		AccessControlContext acc = null;

		if (System.getSecurityManager() != null &&
				(bean instanceof EnvironmentAware || bean instanceof EmbeddedValueResolverAware ||
						bean instanceof ResourceLoaderAware || bean instanceof ApplicationEventPublisherAware ||
						bean instanceof MessageSourceAware || bean instanceof ApplicationContextAware)) {
			acc = this.applicationContext.getBeanFactory().getAccessControlContext();
		}

		if (acc != null) {
			AccessController.doPrivileged((PrivilegedAction<Object>) () -> {
				invokeAwareInterfaces(bean);
				return null;
			}, acc);
		}
		else {
			invokeAwareInterfaces(bean);
		}

		return bean;
	}

	private void invokeAwareInterfaces(Object bean) {
		if (bean instanceof Aware) {
			if (bean instanceof EnvironmentAware) {
				((EnvironmentAware) bean).setEnvironment(this.applicationContext.getEnvironment());
			}
			if (bean instanceof EmbeddedValueResolverAware) {
				((EmbeddedValueResolverAware) bean).setEmbeddedValueResolver(this.embeddedValueResolver);
			}
			if (bean instanceof ResourceLoaderAware) {
				((ResourceLoaderAware) bean).setResourceLoader(this.applicationContext);
			}
			if (bean instanceof ApplicationEventPublisherAware) {
				((ApplicationEventPublisherAware) bean).setApplicationEventPublisher(this.applicationContext);
			}
			if (bean instanceof MessageSourceAware) {
				((MessageSourceAware) bean).setMessageSource(this.applicationContext);
			}
			if (bean instanceof ApplicationContextAware) {
				((ApplicationContextAware) bean).setApplicationContext(this.applicationContext);
			}
		}
	}
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CommonAnnotationBeanPostProcessor繼承自InstantiationAwareBeanPostProcessor,并且沒有對postProcessBeforeInitialization重寫

@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
	LifecycleMetadata metadata = findLifecycleMetadata(bean.getClass());
	try {
		metadata.invokeInitMethods(bean, beanName);
	}
	catch (InvocationTargetException ex) {
		throw new BeanCreationException(beanName, "Invocation of init method failed", ex.getTargetException());
	}
	catch (Throwable ex) {
		throw new BeanCreationException(beanName, "Failed to invoke init method", ex);
	}
	return bean;
}

private LifecycleMetadata findLifecycleMetadata(Class<?> clazz) {
	if (this.lifecycleMetadataCache == null) {
		// Happens after deserialization, during destruction...
		return buildLifecycleMetadata(clazz);
	}
	// Quick check on the concurrent map first, with minimal locking.
	LifecycleMetadata metadata = this.lifecycleMetadataCache.get(clazz);
	if (metadata == null) {
		synchronized (this.lifecycleMetadataCache) {
			metadata = this.lifecycleMetadataCache.get(clazz);
			if (metadata == null) {
				metadata = buildLifecycleMetadata(clazz);
				this.lifecycleMetadataCache.put(clazz, metadata);
			}
			return metadata;
		}
	}
	return metadata;
}

private LifecycleMetadata buildLifecycleMetadata(final Class<?> clazz) {
	final boolean debug = logger.isDebugEnabled();
	List<LifecycleElement> initMethods = new ArrayList<>();
	List<LifecycleElement> destroyMethods = new ArrayList<>();
	Class<?> targetClass = clazz;

	do {
		final List<LifecycleElement> currInitMethods = new ArrayList<>();
		final List<LifecycleElement> currDestroyMethods = new ArrayList<>();

		ReflectionUtils.doWithLocalMethods(targetClass, method -> {
			if (this.initAnnotationType != null && method.isAnnotationPresent(this.initAnnotationType)) {
				LifecycleElement element = new LifecycleElement(method);
				currInitMethods.add(element);
				if (debug) {
					logger.debug("Found init method on class [" + clazz.getName() + "]: " + method);
				}
			}
			if (this.destroyAnnotationType != null && method.isAnnotationPresent(this.destroyAnnotationType)) {
				currDestroyMethods.add(new LifecycleElement(method));
				if (debug) {
					logger.debug("Found destroy method on class [" + clazz.getName() + "]: " + method);
				}
			}
		});

		initMethods.addAll(0, currInitMethods);
		destroyMethods.addAll(currDestroyMethods);
		targetClass = targetClass.getSuperclass();
	}
	while (targetClass != null && targetClass != Object.class);

	return new LifecycleMetadata(clazz, initMethods, destroyMethods);
}
	
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上面的代碼大緻意思就是尋找this.initAnnotationType注解的方法，執行他。

public CommonAnnotationBeanPostProcessor() {
	setOrder(Ordered.LOWEST_PRECEDENCE - 3);
	setInitAnnotationType(PostConstruct.class);
	setDestroyAnnotationType(PreDestroy.class);
	ignoreResourceType("javax.xml.ws.WebServiceContext");
}
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在CommonAnnotationBeanPostProcessor的構造函數裡面，設定了this.initAnnotationType就是@PostConstruct。是以在執行postProcessBeforeInitialization的時候，@PostConstruct标注的方法也會被執行到。

invokeInitMethods 
protected void invokeInitMethods(String beanName, final Object bean, @Nullable RootBeanDefinition mbd)
			throws Throwable {

	boolean isInitializingBean = (bean instanceof InitializingBean);
	if (isInitializingBean && (mbd == null || !mbd.isExternallyManagedInitMethod("afterPropertiesSet"))) {
		if (logger.isDebugEnabled()) {
			logger.debug("Invoking afterPropertiesSet() on bean with name '" + beanName + "'");
		}
		if (System.getSecurityManager() != null) {
			try {
				AccessController.doPrivileged((PrivilegedExceptionAction<Object>) () -> {
					((InitializingBean) bean).afterPropertiesSet();
					return null;
				}, getAccessControlContext());
			}
			catch (PrivilegedActionException pae) {
				throw pae.getException();
			}
		}
		else {
			((InitializingBean) bean).afterPropertiesSet();
		}
	}

	if (mbd != null && bean.getClass() != NullBean.class) {
		String initMethodName = mbd.getInitMethodName();
		if (StringUtils.hasLength(initMethodName) &&
				!(isInitializingBean && "afterPropertiesSet".equals(initMethodName)) &&
				!mbd.isExternallyManagedInitMethod(initMethodName)) {
			invokeCustomInitMethod(beanName, bean, mbd);
		}
	}
}
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  1. 如果實作了InitializingBean接口，則執行他的afterPropertiesSet方法
  2. 如果定義bean的時候有定義init-method.執行他
postProcessAfterInitialization

初始化完成之後的操作，如AbstractAutoProxyCreator：完成aop的操作

Aop的實作之後會詳細些一個

是以spring初始化是常用的方法順序如下：

graph LR
1[PostConstruct]-->2[afterPropertiesSet]
2-->3[initMethod]
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registerDisposableBeanIfNecessary:注冊銷毀的回調方法 

protected void registerDisposableBeanIfNecessary(String beanName, Object bean, RootBeanDefinition mbd) {
	AccessControlContext acc = (System.getSecurityManager() != null ? getAccessControlContext() : null);
	if (!mbd.isPrototype() && requiresDestruction(bean, mbd)) {
		if (mbd.isSingleton()) {
			// Register a DisposableBean implementation that performs all destruction
			// work for the given bean: DestructionAwareBeanPostProcessors,
			// DisposableBean interface, custom destroy method.
			registerDisposableBean(beanName,
					new DisposableBeanAdapter(bean, beanName, mbd, getBeanPostProcessors(), acc));
		}
		else {
			// A bean with a custom scope...
			Scope scope = this.scopes.get(mbd.getScope());
			if (scope == null) {
				throw new IllegalStateException("No Scope registered for scope name '" + mbd.getScope() + "'");
			}
			scope.registerDestructionCallback(beanName,
					new DisposableBeanAdapter(bean, beanName, mbd, getBeanPostProcessors(), acc));
		}
	}
}
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  1. Prototype的bean沒有銷毀方法，spring隻負責Prototype的bean的建立，後續流程都不負責
  2. 按照作用域注冊DisposableBeanAdapter，按照beanName次元

轉載于:https://juejin.im/post/5d272c80f265da1bcd3802e8

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