Description
Hi all,
I'm currently experimenting with Spring Modulith 1.3.1 and found it to be a great initiative towards supporting the transition from Big Balls of Mud into properly structured monoliths. So first of all, thanks a lot for this :-)
However, I'm currently encountering an IllegalArgumentException when trying to generate AsciiDoc diagrams from an experimental codebase that uses a Spring @EventListener method to store initial data into an ephemeral H2 database. The method signature is as follows:
@Component
public class CatalogData {
...
@EventListener(ApplicationStartedEvent.class)
public void initialData() {
// Invoke some save() operations in an injected repository
...
}The above code works flawlessly when running the Spring application. However, when attempting AsciiDoc generation using the following method
class ArchitectureTest {
...
private static final ApplicationModules MODULES = ApplicationModules.of(App.class);
void generateAsciiDoc() {
var diagramOpts = Documenter.DiagramOptions.defaults().withStyle(Documenter.DiagramOptions.DiagramStyle.UML);
var canvasOpts = Documenter.CanvasOptions.defaults();
new Documenter(MODULES).writeDocumentation(diagramOpts, canvasOpts);
}
}
I'm getting an IllegalArgumentException stating that
Method JavaMethod{....initialData()} must have at least one parameter!
from
The error is straightforward, and adding a parameter for the caught event and therefore changing the method signature to
public void initialData(ApplicationStartedEvent event) {
fixes the issue.
Still wanted to report it, because Spring seemingly allows omitting the event parameter, while Spring Modulith seems to expect it.