Yes, AFAIK we have open JIRA for this for a long time ago.

It's the same issue for IdentityProvider (and maybe some others SPI too) that they bypass "official" way for create provider via session.getProvider(providerClazz) and hence they are not registered in KeycloakSession and "close" method is not called for them.

The issue is that our SPI is a bit limited IMO and doesn't support "stateful" providers. The providers are created through "ProviderFactory.create(KeycloakSession)". So the only available state of provider ATM is just ProviderFactory + KeycloakSession, which is sometimes not sufficient.

I can see 2 possibilities to address:

1) Always make the provider implementation "stateless" and ensure all the state is passed as argument to provider methods. This is what we already do for some providers (for example all methods of UserProvider has RealmModel as parameter). So if we rewrite UserFederation SPI that UserFederationProviderModel will be passed as argument to all methods of UserFederationProvider, then it can use "official" way too.

2) Improve the SPI, so it can properly support "stateful" providers. This is more flexible then (1) and I would go this way long term.

I am thinking about something like this:

public interface StatefulProvider<S> extends Provider {

public class StatefulProviderFactory<T extends StatefulProvider, S> {

     T create(KeycloakSession session, S state);


and on KEycloakSession new method like this:

<S, T extends StatefulProvider<S>> T getProvider(Class<T> providerClazz, String id, S state);

The "state" will need to properly implement equals and hashCode, so the SPI can deal with it and not create another instance of StatefulProvider if it was called for this KeycloakSession with same state before.


On 29/04/16 08:00, Stian Thorgersen wrote:
Looking at the code for user federation it looks like user federation provider instances with the same configuration can be created multiple times for a single session. Also they are never closed to resources aren't released.

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