[keycloak-user] Issue creating EntityManagerFactory from custom UserFederationProviderFactory

[Stian Thorgersen]

That's much cleaner than the approach I used. Thanks

On 7 April 2016 at 00:52, Anthony Fryer <Anthony.Fryer at virginaustralia.com>
wrote:

> There’s definitely some challenges getting the classloaders to play nicely
> with each other.  I ended up getting this to work by just adding the
> following one line to the properties used when creating the
> EntityManagerFactory…
>
>
>
> // Adding "hibernate.classLoaders" property is critical for this to work
>
> p.put("hibernate.classLoaders",
> Arrays.asList(this.getClass().getClassLoader()));
>
> …
>
> emf = Persistence.createEntityManagerFactory("acmeEntities", p);
>
>
>
> Thanks,
>
>
>
> Anthony
>
>
>
> *From:* Stian Thorgersen [mailto:sthorger at redhat.com]
> *Sent:* Wednesday, 6 April 2016 8:56 PM
> *To:* Anthony Fryer
> *Cc:* keycloak-user (keycloak-user at lists.jboss.org)
> *Subject:* Re: [keycloak-user] Issue creating EntityManagerFactory from
> custom UserFederationProviderFactory
>
>
>
> It's not very easy to get Persistence to pick-up the persistence.xml file
> from a module. We've got a fix for this coming in 1.9.2, but you can just
> copy/paste the lines from
> https://github.com/keycloak/keycloak/blob/master/model/jpa/src/main/java/org/keycloak/connections/jpa/util/JpaUtils.java#L43.
> It uses Hibernate classes directly to create the EntityManagerFactory which
> allows specifying the classloader. Just use the classloader for your UserFederationProviderFactory
> implementation.
>
>
>
> On 6 April 2016 at 05:12, Anthony Fryer <Anthony.Fryer at virginaustralia.com>
> wrote:
>
> 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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