GH-1062 - ApplicationModuleExporter now exposes ApplicationModuleInitializer beans.

spring-modulith-core/src/main/java/org/springframework/modulith/core/ApplicationModule.java

@@ -301,6 +301,23 @@ public class ApplicationModule implements Comparable<ApplicationModule> {
 				.toList();
 	}
 
+	/**
+	 * Returns all {@link SpringBean}s assignable to the given type.
+	 *
+	 * @param type must not be {@literal null}.
+	 * @return will never be {@literal null}.
+	 * @since 1.4
+	 */
+	public List<SpringBean> getSpringBeans(Class<?> type) {
+
+		Assert.notNull(type, "Type must not be null!");
+
+		return getSpringBeansInternal().stream() //
+				.map(it -> SpringBean.of(it, this)) //
+				.filter(it -> it.isAssignableTo(type))
+				.toList();
+	}
+
 	/**
 	 * Returns the {@link ArchitecturallyEvidentType} for the given type.
 	 *

spring-modulith-core/src/main/java/org/springframework/modulith/core/SpringBean.java

@@ -106,6 +106,19 @@ public class SpringBean {
 		return ArchitecturallyEvidentType.of(type, module.getSpringBeansInternal());
 	}
 
+	/**
+	 * Returns whether the bean is assignable to the given type.
+	 *
+	 * @param type must not be {@literal null}.
+	 * @since 1.4
+	 */
+	public boolean isAssignableTo(Class<?> type) {
+
+		Assert.notNull(type, "Type must not be null!");
+
+		return this.type.isAssignableTo(type);
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see java.lang.Object#equals(java.lang.Object)

spring-modulith-core/src/main/java/org/springframework/modulith/core/util/ApplicationModulesExporter.java

@@ -30,6 +30,7 @@ import java.util.stream.Collector;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import org.springframework.modulith.ApplicationModuleInitializer;
 import org.springframework.modulith.core.ApplicationModule;
 import org.springframework.modulith.core.ApplicationModuleDependency;
 import org.springframework.modulith.core.ApplicationModuleIdentifier;
@@ -37,6 +38,7 @@ import org.springframework.modulith.core.ApplicationModules;
 import org.springframework.modulith.core.DependencyType;
 import org.springframework.modulith.core.NamedInterface;
 import org.springframework.modulith.core.NamedInterfaces;
+import org.springframework.modulith.core.SpringBean;
 import org.springframework.util.Assert;
 
 import com.tngtech.archunit.core.domain.JavaClass;
@@ -137,6 +139,10 @@ public class ApplicationModulesExporter {
 
 		if (details.equals(Details.FULL)) {
 			json.put("namedInterfaces", toNamedInterfaces(module.getNamedInterfaces()));
+			json.put("initializers", module.getSpringBeans(ApplicationModuleInitializer.class).stream()
+					.map(SpringBean::getType)
+					.map(JavaClass::getName)
+					.toList());
 		}
 
 		json.put("dependencies", module.getDirectDependencies(modules).stream() //

spring-modulith-integration-test/pom.xml

@@ -23,6 +23,13 @@
 			<version>${project.version}</version>
 		</dependency>
 
+		<dependency>
+			<groupId>${project.groupId}</groupId>
+			<artifactId>spring-modulith-runtime</artifactId>
+			<version>${project.version}</version>
+			<scope>test</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>${project.groupId}</groupId>
 			<artifactId>spring-modulith-test</artifactId>

spring-modulith-integration-test/src/main/java/com/acme/myproject/moduleA/ServiceComponentA.java

@@ -16,13 +16,14 @@
 package com.acme.myproject.moduleA;
 
 import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.modulith.ApplicationModuleInitializer;
 import org.springframework.stereotype.Component;
 
 /**
  * @author Oliver Drotbohm
  */
 @Component
-public class ServiceComponentA {
+public class ServiceComponentA implements ApplicationModuleInitializer {
 
 	private final ApplicationEventPublisher publisher;
 
@@ -33,4 +34,7 @@ public class ServiceComponentA {
 	public void fireEvent() {
 		publisher.publishEvent(new SomeEventA("Message"));
 	}
+
+	@Override
+	public void initialize() {}
 }

spring-modulith-integration-test/src/test/java/org/springframework/modulith/core/util/ApplicationModulesExporterUnitTests.java

@@ -23,6 +23,7 @@ import org.junit.jupiter.api.Test;
 import org.springframework.modulith.core.ApplicationModules;
 
 import com.acme.myproject.Application;
+import com.acme.myproject.moduleA.ServiceComponentA;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.jayway.jsonpath.JsonPath;
 
@@ -61,4 +62,13 @@ class ApplicationModulesExporterUnitTests {
 			new ObjectMapper().readTree(EXPORTER.toJson());
 		});
 	}
+
+	@Test // GH-1062
+	void fullRenderingListsInitializers() {
+
+		var exported = EXPORTER.toFullJson();
+
+		assertThat((List<String>) JsonPath.compile("$..initializers[*]").read(exported))
+				.containsExactly(ServiceComponentA.class.getName());
+	}
 }