Keycloak Userstorage SPI: Provider not found? - keycloak

Question

What are the requirments to make the Keycloak 17.0.0 find the provider?
[error]: Build step org.keycloak.quarkus.deployment.KeycloakProcessor#configureProviders threw an exception: java.util.ServiceConfigurationError: org.keycloak.storage.UserStorageProviderFactory: Provider my.own.package.UserStorageProviderFactoryImpl not found
If I clone the project from baeldung and I start the keycloak, it works. It finds the provider. (https://www.baeldung.com/java-keycloak-custom-user-providers)
As I see the followings have to happen to make it work:
have a class that implements the UserStorageProviderFactory interface:
public class UserStorageProviderFactoryImpl implements UserStorageProviderFactory<MyImplementation> {}
create the META-INF and services folders and create the org.keycloak.storage.UserStorageProviderFactory file that contains the path to given factory:
mvn clean package --> copy jar to Keycloak/providers and should work
What do I miss? What is extra in the baeldung project that make it work while my project is not found when I start the keycloak?
https://www.keycloak.org/docs/latest/server_development/index.html#_user-storage-spi

Answer 1

Your class should be name SomethingUserStorageProviderFactory without the word 'impl'. Your provider class should have the same pattern name, for example, SomethingUserStorageProvider.
Official documentation gives more interesting information’s (https://www.keycloak.org/docs/latest/server_development/#_providers) and if you take a look at baeldung's code, he due the same pattern name.