[keycloak-user] Issue creating EntityManagerFactory from custom UserFederationProviderFactory

[Anthony Fryer]

Hi All,

I'm implementing a UserFederationProviderFactory and want to create an EntityManagerFactory from one of its methods.  I have packaged up a persistence.xml in the META-INF folder of the SPI jar file and deployed this as a module to the keycloak standalone server.

My module.xml looks like this...

<module xmlns="urn:jboss:module:1.3" name="acme.keycloak-acme-user-federation">
    <resources>
        <resource-root path="keycloak-acme-user-federation-1.0.0.jar">
            <filter>
                <include path="META-INF/**"/>
            </filter>
        </resource-root>
    </resources>
    <dependencies>
        <module name="org.keycloak.keycloak-core"/>
        <module name="org.keycloak.keycloak-server-spi"/>
        <module name="javax.api"/>
        <module name="javaee.api"/>
        <module name="org.hibernate" />
        <module name="org.jboss.ws.cxf.jbossws-cxf-client"/>
    </dependencies>

</module>

In my UserFederationProviderFactory I have a method like this...

                private EntityManagerFactory getEntityManagerFactory(UserFederationProviderModel model) {
                                if (emf == null) {
                                                logger.trace("Creating entityManagerFactory...");
                                                Map<String, String> config = model.getConfig();
                                                Properties p = new Properties();
                                                // for now just use hibernate built in connection factory
                                                p.put("hibernate.connection.driver_class", config.get(DATABASE_DRIVER_CLASS_NAME));
                                                p.put("hibernate.connection.url", config.get(DATABASE_URL));
                                                p.put("hibernate.connection.username", config.get(DATABASE_USER));
                                                p.put("hibernate.connection.password", config.get(DATABASE_PASSWORD));
                                                p.put("hibernate.show_sql", "true");
                                                p.put("hibernate.format_sql", "true");
                                                emf = Persistence.createEntityManagerFactory("acmeEntities", p);
                                }

                                return emf;
                }

When this method is called, it always returns the error "No Persistence provider for EntityManager named acmeEntities".

I'm 90% sure this is to do with the ClassLoader being used by Persistence not being able to see the META-INF/persistence.xml packaged up in the keycloak-acme-user-federation-1.0.0.jar.  Does anyone have an idea what I need to do to my module configuration to get this working?

Thanks,

Anthony Fryer


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