KeyCloak - Create Realms/Users/Groups Programmatically?

Question

We've decided to move to KeyCloak for our identity and access management solution, rather than implement it entirely within our Java EE web app. We're creating a multi-tenant solution, and would prefer to create security realms/users/groups programmatically through our workflow, rather than leveraging KeyCloak's self-registration functionality or web UI so that we can do things like grab credit card details for payment, etc. I know that we could likely leverage the admin REST APIs to accomplish this, but I wasn't sure if there was a simpler way to do it besides hand-coding REST calls. Does KeyCloak provide an admin client library that we could use? Or are we stuck implementing a REST client for the admin APIs ourselves?

Answer 1

I found some info around the KeyCloak Java Admin Client. This gist has lots of useful examples showing how to managed users, realms, etc.

Answer 2

Keycloak kc = KeycloakBuilder.builder() 
            .serverUrl("https://localhost:8443/auth")
            .realm("master")
            .username("admin") 
            .password("admin") 
            .clientId("Mycli") 
            .resteasyClient(new ResteasyClientBuilder().connectionPoolSize(10).build()) 
            .build();

    CredentialRepresentation credential = new CredentialRepresentation();
    credential.setType(CredentialRepresentation.PASSWORD);
    credential.setValue("test123");

    UserRepresentation user = new UserRepresentation();
    user.setUsername("testuser2");
    user.setFirstName("Test2");
    user.setLastName("User2");
    user.setEmail("[email protected]");
    user.setCredentials(Arrays.asList(credential));
    user.setEnabled(true);
    user.setRealmRoles(Arrays.asList("admin"));

    // Create testuser
    Response result = kc.realm("my-realem").users().create(user);
    if (result.getStatus() != 201) {
        System.err.println("Couldn't create user.");
        System.exit(0);
    }else{
        System.out.println("Testuser created.... verify in keycloak!");
    }