Configure persistence for KeycloakContainer

[0xdbe]

Hi everyone!

Context

I would like to use testcontainer to test my UserStorage provider based on this one.

My provider uses postgresql database defined in src/main/resources/META-INF/persistence.xml file :

<properties>
  <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
  <property name="hibernate.connection.datasource" value="postgresql" />
</properties>

My keycloak container is configured like this:

private static final KeycloakContainer keycloak = new KeycloakContainer()
	.withProviderClassesFrom("target/classes")
        .withCopyFileToContainer(MountableFile.forHostPath("conf/quarkus.properties"), "/opt/keycloak/conf/quarkus.properties");

Issue

KeycloakContainer takes persistence configuration from src/main/resources/META-INF/persistence.xml file.
(More exactly target/classes/META-INF/persistence.xml)

There are any way to change this file for src/test/resources/META-INF/h2-persistence.xml ?

Maybe using ShrinkWrap 🤔 but I don't know if this is possible

return ShrinkWrap.create(WebArchive.class, "test.war")
            .addPackage(Game.class.getPackage())
            .addAsResource("test-persistence.xml", "META-INF/persistence.xml")
            .addAsWebInfResource(EmptyAsset.INSTANCE, "beans.xml");

[0xdbe]

A quick workaround is to override createKeycloakExtensionDeployment:

public class KeycloakContainerPersistence extends ExtendableKeycloakContainer<KeycloakContainerPersistence> {
   @Override
    protected void createKeycloakExtensionDeployment(String deploymentLocation, String extensionName, String extensionClassFolder) {

        requireNonNull(deploymentLocation, "deploymentLocation must not be null");
        requireNonNull(extensionName, "extensionName must not be null");
        requireNonNull(extensionClassFolder, "extensionClassFolder must not be null");

        String classesLocation = resolveExtensionClassLocation(extensionClassFolder);
        if (new File(classesLocation).exists()) {
            final File file;
            try {
                file = Files.createTempFile("keycloak", ".jar").toFile();
                file.setReadable(true, false);
                file.deleteOnExit();
                ShrinkWrap.create(JavaArchive.class, extensionName)
                    .as(ExplodedImporter.class)
                    .importDirectory(classesLocation)
                    .as(JavaArchive.class)
                    .addAsResource("META-INF/persistence.test.postgresql.xml", "META-INF/persistence.xml")
                    .as(ZipExporter.class)
                    .exportTo(file, true);
                withCopyFileToContainer(MountableFile.forHostPath(file.getAbsolutePath()), deploymentLocation + "/" + extensionName);
            } catch (IOException e) {
                throw new UncheckedIOException(e);
            }
        }
    }
}

addAsResource() allows to copy persistence.xml file (harcoded in this example)