NPE from SpringBootPlatformProvider startup()

[edrik]

Trying to get a setup deployed as a tomcat war and not a standalone boot app. But running in to a type of race condition regarding startup of Springs app context and the HttpServlet30Dispatcher.

But now I'm starting to suspect that I'm missing something fundamental to how the SpringBootPlatformProvider is initiated?

So basically the Runnable onStartup is null when the SpringBootPlatformProvider.onApplicationEvent() triggers the startup() call and tries to:

    protected void startup() {
        tmpDir = createTempDir();
        onStartup.run();
    }

So when running as a tomcat war it looks like the EmbeddedKeycloakApplication is initiated after the ApplicationReadyEvent is triggered ?

So how how does this wiring actually work as a standalone boot app 🤔

[Shryne]

I have the same problem and I didn't manage to fix this behaviour. However, there's an alternative: https://www.baeldung.com/keycloak-embedded-in-spring-boot-app
Using this, I managed to get keycloak running in tomcat.

Still, it would be nice, if this issue would be fixed.