Using a rest client in a keycloak extension

[Paul Schwabauer]

Hi,
with the release of Keycloak 23, it is no longer possible to use the `ResteasyClientBuilder`.  Are there other rest clients that could be used inside a keycloak extension?
I tried `quarkus-resteasy-reactive` without success as `kc.sh build` fails with: io.smallrye.config.ConfigSourceFactory: io.smallrye.config.PropertiesLocationConfigSourceFactory not a subtype and using RestEasy results in dependency problems when building with quarkus.

Thanks in advance!

---
Paul

[Fabio Pereira]

Hi, 

We are facing the same issue, have you found some solution for this? Thanks!

[Garth]

It's not an ideal fix, but you need to build a custom version of Keycloak. I posted the issue and the not ideal "solution" here: https://github.com/keycloak/keycloak/issues/25589#issuecomment-1872296228

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[Ivan Atanasov]

You can potentially use different client. We used Feign with success. The downside been the need to pull external dependency.

ivan

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[Niko Köbler]

Keycloak already gives you resources you can use in your extensions:

https://www.n-k.de/2024/01/keycloak-http-client.html

[Timothy Vogel]

Thanks to Niko for the link!  This will help me achieve my solution!

[Andrey M.]

Hi all. We're facing the same issue when upgrading from Keycloak 22 to Keycloak 24.

Our extension is using a third-party library which requires Jakarta RS WS client. So far `ClientBuilder.buildClient()` worked well.

We don't have an option to alter this, so we can't just switch to java.net.HttpClient for example. A `jakarta.ws.rs.client.Client` implementation is the only option.

Also, building our own Keycloak is not an option because we're using RedHat build of Keycloak and paying for RH support.

I've already opened a support ticket to see what their recommendation would be on this. Meanwhile we're trying to find some ways to resolve it.

We tried to bundle "io.quarkus:quarkus-resteasy-client" and "io.quarkus:quarkus-resteasy-jackson" with our extension excluding already existing libraries to avoid conflicts, but we get the following error in "kc.sh build" output:

> 8.015 ERROR: Build failure: Build failed due to errors
> 8.015   [error]: Build step io.quarkus.arc.deployment.ArcProcessor#registerBeans threw an exception: java.lang.NullPointerException: Cannot invoke "org.jboss.jandex.ClassInfo.name()" because "currentClazz" is null

>8.015   at io.quarkus.resteasy.reactive.server.deployment.ResteasyReactiveProcessor.createTypedAnnotationInstance(ResteasyReactiveProcessor.java:876)

This is our current dependency declaration in Gradle build script just in case:

implementation ('io.quarkus:quarkus-resteasy-client:3.8.5') {
    exclude group: 'io.quarkus', module: 'quarkus-arc'
    exclude group: 'io.quarkus', module: 'quarkus-core'
    exclude group: 'io.quarkus', module: 'quarkus-resteasy-common'
    exclude group: 'jakarta.interceptor', module: 'jakarta.interceptor-api'
    exclude group: 'jakarta.ws.rs', module: 'jakarta.ws.rs-api'
    exclude group: 'org.apache.httpcomponents', module: 'httpasyncclient'
    exclude group: 'org.jboss.logging', module: 'commons-logging-jboss-logging'
    exclude group: 'org.eclipse.microprofile.config', module: 'microprofile-config-api'
}
implementation ('io.quarkus:quarkus-resteasy-jackson:3.8.5') {
    exclude group: 'io.quarkus', module: 'quarkus-arc'
    exclude group: 'io.quarkus', module: 'quarkus-core'
    exclude group: 'io.quarkus', module: 'quarkus-jackson'
    exclude group: 'io.quarkus', module: 'quarkus-vertx-http'
    exclude group: 'jakarta.xml.bind', module: 'jakarta.xml.bind-api'
    exclude group: 'io.smallrye.reactive', module: 'smallrye-mutiny-vertx-uri-template'
    exclude group: 'org.eclipse.microprofile.config', module: 'microprofile-config-api'
}

The problem seems to be caused by "io.quarkus:quarkus-resteasy-jackson" specifically. Without it the ClientBuilder works, but it throws runtime exceptions when trying to use JSON content type.

Any suggestions? Has anyone managed to solve this?

понедельник, 3 июня 2024 г. в 19:42:20 UTC+3, Timothy Vogel:

[Andrey M.]

Hello again.

I managed to find a way to get it working by replacing "io.quarkus:quarkus-resteasy-jackson" with "org.jboss.resteasy:resteasy-jackson2-provider".

Not sure if it's a good long-term solution though, but it does allow us to upgrade to Keycloak 24.

implementation ('io.quarkus:quarkus-resteasy-client:3.8.5') {
exclude group: 'io.quarkus', module: 'quarkus-arc'
exclude group: 'io.quarkus', module: 'quarkus-core'
exclude group: 'io.quarkus', module: 'quarkus-resteasy-common'
exclude group: 'jakarta.interceptor', module: 'jakarta.interceptor-api'
exclude group: 'jakarta.ws.rs', module: 'jakarta.ws.rs-api'
exclude group: 'org.apache.httpcomponents', module: 'httpasyncclient'
exclude group: 'org.jboss.logging', module: 'commons-logging-jboss-logging'
exclude group: 'org.eclipse.microprofile.config', module: 'microprofile-config-api'
}

implementation ('org.jboss.resteasy:resteasy-jackson2-provider:6.2.7.Final') {
exclude group: 'com.fasterxml.jackson.core', module: 'jackson-core'
exclude group: 'com.fasterxml.jackson.core', module: 'jackson-databind'
exclude group: 'com.fasterxml.jackson.core', module: 'jackson-annotations'
exclude group: 'jakarta.servlet', module: 'jakarta.servlet-api'
exclude group: 'org.jboss.logging', module: 'jboss-logging'
}

пятница, 12 июля 2024 г. в 12:40:33 UTC+3, Andrey M.:

[Gilvan Filho]

Hi..

Andrey I have a question: Why did you used quarkus 3.8.5 instead of 3.8.4 which are version used by Red Hat Build of Keycloak 24?