Polish "Set up MongoClient beans' dependencies by type rather than name"

See gh-16627

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/mongo/MongoClientDependsOnBeanFactoryPostProcessor.java

@@ -36,8 +36,25 @@ import org.springframework.data.mongodb.core.MongoClientFactoryBean;
 @Order(Ordered.LOWEST_PRECEDENCE)
 public class MongoClientDependsOnBeanFactoryPostProcessor extends AbstractDependsOnBeanFactoryPostProcessor {
 
+	/**
+	 * Creates a new {@code MongoClientDependsOnBeanFactoryPostProcessor} that will set up
+	 * dependencies upon beans with the given names.
+	 * @param dependsOn names of the beans to depend upon
+	 * @deprecated since 2.1.7 in favor of
+	 * {@link #MongoClientDependsOnBeanFactoryPostProcessor}
+	 */
+	@Deprecated
 	public MongoClientDependsOnBeanFactoryPostProcessor(String... dependsOn) {
 		super(MongoClient.class, MongoClientFactoryBean.class, dependsOn);
 	}
 
+	/**
+	 * Creates a new {@code MongoClientDependsOnBeanFactoryPostProcessor} that will set up
+	 * dependencies upon beans with the given types.
+	 * @param dependsOn types of the beans to depend upon
+	 */
+	public MongoClientDependsOnBeanFactoryPostProcessor(Class<?>... dependsOn) {
+		super(MongoClient.class, MongoClientFactoryBean.class, dependsOn);
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/mongo/ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor.java

@@ -37,8 +37,25 @@ import org.springframework.data.mongodb.core.ReactiveMongoClientFactoryBean;
 public class ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor
 		extends AbstractDependsOnBeanFactoryPostProcessor {
 
+	/**
+	 * Creates a new {@code ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor}
+	 * that will set up dependencies upon beans with the given names.
+	 * @param dependsOn names of the beans to depend upon
+	 * @deprecated since 2.1.7 in favor of
+	 * {@link #ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor}
+	 */
+	@Deprecated
 	public ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor(String... dependsOn) {
 		super(MongoClient.class, ReactiveMongoClientFactoryBean.class, dependsOn);
 	}
 
+	/**
+	 * Creates a new {@code ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor}
+	 * that will set up dependencies upon beans with the given types.
+	 * @param dependsOn types of the beans to depend upon
+	 */
+	public ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor(Class<?>... dependsOn) {
+		super(MongoClient.class, ReactiveMongoClientFactoryBean.class, dependsOn);
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.java

@@ -48,8 +48,6 @@ import de.flapdoodle.embed.process.store.ArtifactStoreBuilder;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import org.springframework.beans.factory.BeanFactoryUtils;
-import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.boot.autoconfigure.AutoConfigureBefore;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
@@ -218,32 +216,26 @@ public class EmbeddedMongoAutoConfiguration {
 	 */
 	@Configuration
 	@ConditionalOnClass({ MongoClient.class, MongoClientFactoryBean.class })
-	protected static class EmbeddedMongoDependencyConfiguration {
+	protected static class EmbeddedMongoDependencyConfiguration extends MongoClientDependsOnBeanFactoryPostProcessor {
 
-		@Bean
-		public MongoClientDependsOnBeanFactoryPostProcessor mongoClientDependsOnBeanFactoryPostProcessor(
-				ListableBeanFactory listableBeanFactory) {
-			String[] mongoExecutableBeanNames = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(listableBeanFactory,
-					MongodExecutable.class);
-			return new MongoClientDependsOnBeanFactoryPostProcessor(mongoExecutableBeanNames);
+		EmbeddedMongoDependencyConfiguration() {
+			super(MongodExecutable.class);
 		}
 
 	}
 
 	/**
-	 * Additional configuration to ensure that {@link MongoClient} beans depend on any
+	 * Additional configuration to ensure that
+	 * {@link com.mongodb.reactivestreams.client.MongoClient} beans depend on any
 	 * {@link MongodExecutable} beans.
 	 */
 	@Configuration
 	@ConditionalOnClass({ com.mongodb.reactivestreams.client.MongoClient.class, ReactiveMongoClientFactoryBean.class })
-	protected static class EmbeddedReactiveMongoDependencyConfiguration {
+	protected static class EmbeddedReactiveMongoDependencyConfiguration
+			extends ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor {
 
-		@Bean
-		public ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor reactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor(
-				ListableBeanFactory listableBeanFactory) {
-			String[] mongoExecutableBeanNames = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(listableBeanFactory,
-					MongodExecutable.class);
-			return new ReactiveStreamsMongoClientDependsOnBeanFactoryPostProcessor(mongoExecutableBeanNames);
+		EmbeddedReactiveMongoDependencyConfiguration() {
+			super(MongodExecutable.class);
 		}
 
 	}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfigurationTests.java

@@ -18,6 +18,7 @@ package org.springframework.boot.autoconfigure.mongo.embedded;
 
 import java.io.File;
 import java.util.EnumSet;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 import com.mongodb.MongoClient;
@@ -33,6 +34,7 @@ import org.junit.After;
 import org.junit.Test;
 
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
 import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration;
 import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
@@ -45,7 +47,6 @@ import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.util.FileSystemUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatCode;
 
 /**
  * Tests for {@link EmbeddedMongoAutoConfiguration}.
@@ -177,7 +178,12 @@ public class EmbeddedMongoAutoConfigurationTests {
 
 	@Test
 	public void customMongoServerConfiguration() {
-		assertThatCode(() -> load(CustomMongoConfiguration.class)).doesNotThrowAnyException();
+		load(CustomMongoConfiguration.class);
+		Map<String, MongoClient> mongoClients = this.context.getBeansOfType(MongoClient.class);
+		for (String mongoClientBeanName : mongoClients.keySet()) {
+			BeanDefinition beanDefinition = this.context.getBeanFactory().getBeanDefinition(mongoClientBeanName);
+			assertThat(beanDefinition.getDependsOn()).contains("customMongoServer");
+		}
 	}
 
 	private void assertVersionConfiguration(String configuredVersion, String expectedVersion) {