ContainerConnectionDetails should inherit qualifiers from Container bean

See #42970 (comment)

Author: quaff

spring-boot-project/spring-boot-testcontainers/src/main/java/org/springframework/boot/testcontainers/service/connection/BeanOrigin.java

@@ -25,18 +25,26 @@
  * {@link Origin} backed by a Spring Bean.
  *
  * @author Phillip Webb
+ * @author Yanming Zhou
  */
 class BeanOrigin implements Origin {
 
 	private final String beanName;
 
+	private final BeanDefinition beanDefinition;
+
 	private final String resourceDescription;
 
 	BeanOrigin(String beanName, BeanDefinition beanDefinition) {
 		this.beanName = beanName;
+		this.beanDefinition = beanDefinition;
 		this.resourceDescription = (beanDefinition != null) ? beanDefinition.getResourceDescription() : null;
 	}
 
+	BeanDefinition getBeanDefinition() {
+		return this.beanDefinition;
+	}
+
 	@Override
 	public boolean equals(Object obj) {
 		if (this == obj) {

spring-boot-project/spring-boot-testcontainers/src/main/java/org/springframework/boot/testcontainers/service/connection/ConnectionDetailsRegistrar.java

@@ -29,6 +29,7 @@
 
 import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.beans.factory.aot.BeanRegistrationExcludeFilter;
+import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.beans.factory.support.RegisteredBean;
 import org.springframework.beans.factory.support.RootBeanDefinition;
@@ -49,6 +50,7 @@
  * @author Moritz Halbritter
  * @author Andy Wilkinson
  * @author Phillip Webb
+ * @author Yanming Zhou
  */
 class ConnectionDetailsRegistrar {
 
@@ -109,9 +111,22 @@ private <T> void registerBeanDefinition(BeanDefinitionRegistry registry, Contain
 		RootBeanDefinition beanDefinition = new RootBeanDefinition(beanType, beanSupplier);
 		beanDefinition.setAttribute(ServiceConnection.class.getName(), true);
 		containerMetadata.addTo(beanDefinition);
+		if (source.getOrigin() instanceof BeanOrigin beanOrigin) {
+			inheritQualifiers(beanOrigin.getBeanDefinition(), beanDefinition);
+		}
 		registry.registerBeanDefinition(beanName, beanDefinition);
 	}
 
+	private void inheritQualifiers(BeanDefinition origin, RootBeanDefinition derived) {
+		derived.setPrimary(origin.isPrimary());
+		derived.setFallback(origin.isFallback());
+		derived.setAutowireCandidate(origin.isAutowireCandidate());
+		if (origin instanceof RootBeanDefinition rbd) {
+			derived.setDefaultCandidate(rbd.isDefaultCandidate());
+			derived.setQualifiedElement(rbd.getQualifiedElement());
+		}
+	}
+
 	private String getBeanName(ContainerConnectionSource<?> source, ConnectionDetails connectionDetails) {
 		List<String> parts = new ArrayList<>();
 		parts.add(ClassUtils.getShortNameAsProperty(connectionDetails.getClass()));

spring-boot-project/spring-boot-testcontainers/src/test/java/org/springframework/boot/testcontainers/service/connection/ConnectionDetailsRegistrarTests.java

@@ -40,6 +40,7 @@
  * Tests for {@link ConnectionDetailsRegistrar}.
  *
  * @author Phillip Webb
+ * @author Yanming Zhou
  */
 class ConnectionDetailsRegistrarTests {
 
@@ -106,6 +107,32 @@ void registerBeanDefinitionsRegistersDefinition() {
 		assertThat(beanFactory.getBean(TestConnectionDetails.class)).isNotNull();
 	}
 
+	@Test
+	void containerConnectionDetailsBeanShouldInheritQualifiersFromContainerBean() {
+		RootBeanDefinition originBeanDefinition = new RootBeanDefinition();
+		originBeanDefinition.setPrimary(true);
+		originBeanDefinition.setFallback(false);
+		originBeanDefinition.setAutowireCandidate(true);
+		originBeanDefinition.setDefaultCandidate(true);
+		originBeanDefinition.setQualifiedElement(ConnectionDetailsRegistrarTests.class);
+		Origin origin = new BeanOrigin("test", originBeanDefinition);
+		ContainerConnectionSource<?> source = new ContainerConnectionSource<>("test", origin, PostgreSQLContainer.class,
+				null, this.annotation, () -> this.container);
+		DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
+		ConnectionDetailsRegistrar registrar = new ConnectionDetailsRegistrar(beanFactory, this.factories);
+		given(this.factories.getConnectionDetails(source, true))
+			.willReturn(Map.of(TestConnectionDetails.class, new TestConnectionDetails()));
+		registrar.registerBeanDefinitions(beanFactory, source);
+		String[] beanNames = beanFactory.getBeanNamesForType(TestConnectionDetails.class);
+		assertThat(beanNames).hasSize(1);
+		RootBeanDefinition beanDefinition = (RootBeanDefinition) beanFactory.getBeanDefinition(beanNames[0]);
+		assertThat(beanDefinition.isPrimary()).isEqualTo(originBeanDefinition.isPrimary());
+		assertThat(beanDefinition.isFallback()).isEqualTo(originBeanDefinition.isFallback());
+		assertThat(beanDefinition.isAutowireCandidate()).isEqualTo(originBeanDefinition.isAutowireCandidate());
+		assertThat(beanDefinition.isDefaultCandidate()).isEqualTo(originBeanDefinition.isDefaultCandidate());
+		assertThat(beanDefinition.getQualifiedElement()).isEqualTo(originBeanDefinition.getQualifiedElement());
+	}
+
 	static class TestConnectionDetails implements ConnectionDetails {
 
 	}