Limit ConfigurationPropertiesBean candidates

Update `ConfigurationPropertiesBean.getAll()` to limit the candidate
beans that will actually need a `getBean()` call. Prior to this commit
calling `getAll()` would trigger a get of every bean in the context,
some of which might fail.

Fixes gh-18714

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationPropertiesBean.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.context.properties;
 
 import java.lang.annotation.Annotation;
+import java.lang.reflect.AnnotatedElement;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
 import java.util.Iterator;
@@ -156,19 +157,35 @@ public final class ConfigurationPropertiesBean {
 		Iterator<String> beanNames = beanFactory.getBeanNamesIterator();
 		while (beanNames.hasNext()) {
 			String beanName = beanNames.next();
-			try {
-				Object bean = beanFactory.getBean(beanName);
-				ConfigurationPropertiesBean propertiesBean = get(applicationContext, bean, beanName);
-				if (propertiesBean != null) {
+			if (isConfigurationPropertiesBean(beanFactory, beanName)) {
+				try {
+					Object bean = beanFactory.getBean(beanName);
+					ConfigurationPropertiesBean propertiesBean = get(applicationContext, bean, beanName);
 					propertiesBeans.put(beanName, propertiesBean);
 				}
-			}
-			catch (NoSuchBeanDefinitionException ex) {
+				catch (Exception ex) {
+				}
 			}
 		}
 		return propertiesBeans;
 	}
 
+	private static boolean isConfigurationPropertiesBean(ConfigurableListableBeanFactory beanFactory, String beanName) {
+		try {
+			if (beanFactory.getBeanDefinition(beanName).isAbstract()) {
+				return false;
+			}
+			if (beanFactory.findAnnotationOnBean(beanName, ConfigurationProperties.class) != null) {
+				return true;
+			}
+			Method factoryMethod = findFactoryMethod(beanFactory, beanName);
+			return findMergedAnnotation(factoryMethod, ConfigurationProperties.class).isPresent();
+		}
+		catch (NoSuchBeanDefinitionException ex) {
+			return false;
+		}
+	}
+
 	/**
 	 * Return a {@link ConfigurationPropertiesBean @ConfigurationPropertiesBean} instance
 	 * for the given bean details or {@code null} if the bean is not a
@@ -195,7 +212,10 @@ public final class ConfigurationPropertiesBean {
 	}
 
 	private static Method findFactoryMethod(ConfigurableApplicationContext applicationContext, String beanName) {
-		ConfigurableListableBeanFactory beanFactory = applicationContext.getBeanFactory();
+		return findFactoryMethod(applicationContext.getBeanFactory(), beanName);
+	}
+
+	private static Method findFactoryMethod(ConfigurableListableBeanFactory beanFactory, String beanName) {
 		if (beanFactory.containsBeanDefinition(beanName)) {
 			BeanDefinition beanDefinition = beanFactory.getMergedBeanDefinition(beanName);
 			if (beanDefinition instanceof RootBeanDefinition) {
@@ -260,10 +280,10 @@ public final class ConfigurationPropertiesBean {
 			Class<A> annotationType) {
 		MergedAnnotation<A> annotation = MergedAnnotation.missing();
 		if (factory != null) {
-			annotation = MergedAnnotations.from(factory, SearchStrategy.TYPE_HIERARCHY).get(annotationType);
+			annotation = findMergedAnnotation(factory, annotationType);
 		}
 		if (!annotation.isPresent()) {
-			annotation = MergedAnnotations.from(type, SearchStrategy.TYPE_HIERARCHY).get(annotationType);
+			annotation = findMergedAnnotation(type, annotationType);
 		}
 		if (!annotation.isPresent() && AopUtils.isAopProxy(instance)) {
 			annotation = MergedAnnotations.from(AopUtils.getTargetClass(instance), SearchStrategy.TYPE_HIERARCHY)
@@ -272,6 +292,12 @@ public final class ConfigurationPropertiesBean {
 		return annotation.isPresent() ? annotation.synthesize() : null;
 	}
 
+	private static <A extends Annotation> MergedAnnotation<A> findMergedAnnotation(AnnotatedElement element,
+			Class<A> annotationType) {
+		return (element != null) ? MergedAnnotations.from(element, SearchStrategy.TYPE_HIERARCHY).get(annotationType)
+				: MergedAnnotation.missing();
+	}
+
 	private static boolean isBindableConstructor(Constructor<?> constructor) {
 		Class<?> declaringClass = constructor.getDeclaringClass();
 		Constructor<?> bindConstructor = BindMethod.findBindConstructor(declaringClass);

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/context/properties/ConfigurationPropertiesBeanTests.java

@@ -29,6 +29,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 import org.springframework.context.annotation.ImportSelector;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.core.ResolvableType;
 import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.stereotype.Component;
@@ -72,6 +73,16 @@ class ConfigurationPropertiesBeanTests {
 		}
 	}
 
+	@Test
+	void getAllWhenHasBadBeanDoesNotFail() {
+		try (AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
+				NonAnnotatedComponent.class, AnnotatedComponent.class, AnnotatedBeanConfiguration.class,
+				ValueObjectConfiguration.class, BadBeanConfiguration.class)) {
+			Map<String, ConfigurationPropertiesBean> all = ConfigurationPropertiesBean.getAll(context);
+			assertThat(all).isNotEmpty();
+		}
+	}
+
 	@Test
 	void getWhenNotAnnotatedReturnsNull() throws Throwable {
 		get(NonAnnotatedComponent.class, "nonAnnotatedComponent",
@@ -387,6 +398,25 @@ class ConfigurationPropertiesBeanTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class BadBeanConfiguration {
+
+		@Bean
+		@Lazy
+		BadBean badBean() {
+			return new BadBean();
+		}
+
+	}
+
+	static class BadBean {
+
+		BadBean() {
+			throw new IllegalStateException();
+		}
+
+	}
+
 	@ConfigurationProperties
 	@ConstructorBinding
 	static class ValueObject {