Wrong path generated by Keycloak admin client reactive resulting in 404

Describe the bug

When using quarkus-keycloak-admin-client-reactive, requests being sent to keycloak to manage resources (auth seems ok since no 401) are returning 404. When looking at TRACE logs to understand what’s happening, I see that the path is not formatted correctly (e.g. http://localhost:8180/admin/realms/myrealm/clients/clients to list clients). Same thing with roles for where the resource type appears two times in the path.

When switching to quarkus-keycloak-admin-client (non-reactive version) extension, everything seems fine. I guess there is a difference between to two. There is not much code is those two extensions in this repository but I couldn’t figure out where it breaks. The non-reactive version seems to have some more dependencies. Details below.

Expected behavior

Path should be formatted correctly in order not to return 404

Actual behavior

Created paths that targets resources are not matching the Keycloak REST API specifications (17.0.1)

How to Reproduce?

Quarkus with quarkus-keycloak-admin-client-reactive

    @Inject
    keycloakConfig config;
    
    @ApplicationScoped
    Keycloak keycloak() {
        return KeycloakBuilder.builder()
            .serverUrl(config.serverUrl())
            .realm(config.realm())
            .grantType(OAuth2Constants.CLIENT_CREDENTIALS)
            .clientId(config.clientId())
            .clientSecret(config.clientSecret())
            .build();
    }

List<ClientRepresentation> r = keycloak.realm("myrealm").clients().findAll();

Dependencies versions

# When using reactive version
❯ mvn dependency:tree | grep keyc
[INFO] +- io.quarkus:quarkus-keycloak-admin-client-reactive:jar:2.8.0.Final:compile
[INFO] |  +- org.keycloak:keycloak-core:jar:17.0.1:compile
[INFO] |  |  +- org.keycloak:keycloak-common:jar:17.0.1:compile
[INFO] |  +- org.keycloak:keycloak-admin-client:jar:17.0.1:compile

# When using non-reactive version
❯ mvn dependency:tree | grep keyc
[INFO] +- io.quarkus:quarkus-keycloak-admin-client:jar:2.8.0.Final:compile
[INFO] |  +- org.keycloak:keycloak-adapter-core:jar:17.0.1:compile
[INFO] |  +- org.keycloak:keycloak-core:jar:17.0.1:compile
[INFO] |  |  +- org.keycloak:keycloak-common:jar:17.0.1:compile
[INFO] |  +- org.keycloak:keycloak-admin-client:jar:17.0.1:compile
[INFO] |  +- org.keycloak:keycloak-authz-client:jar:17.0.1:compile

docker

docker run --rm -p 8180:8080 -e KEYCLOAK_ADMIN=admin -e KC_HTTP_ENABLED=true -e \
KEYCLOAK_ADMIN_PASSWORD=admin -e KC_HOSTNAME_STRICT=false --name kc \
quay.io/keycloak/keycloak:17.0.1 start

Output of uname -a or ver

Linux REDACTED 5.15.0-25-generic #25-Ubuntu SMP Wed Mar 30 15:54:22 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Output of java -version

openjdk version “17.0.2” 2022-01-18 OpenJDK Runtime Environment Temurin-17.0.2+8 (build 17.0.2+8) OpenJDK 64-Bit Server VM Temurin-17.0.2+8 (build 17.0.2+8, mixed mode, sharing)

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.8.0.Final

Build tool (ie. output of mvnw --version or gradlew --version)

Apache Maven 3.6.3

Additional information

No response