[keycloak-dev] Changes for Quarkus Extension

Hello All, We are finally close to finishing the Keycloak Quarkus Extension. An extension that will help developers to protect their services using both JVM and Native mode based on the existing functionality provided by our adapters. In this case, by the Undertow Adapter. After discussing with Scott Stark different approaches to this extension, we finally have an agreement that will require two changes in the adapter code. The first one is quite simple as it is basically defining a constructor to the KeycloakServletExtension in order to allow passing a pre-built AdapterDeploymentContext instance [1]. This change will give more flexibility to the extension to build the deployment context and use it to configure the deployment. For instance, we could read keycloak related settings from the Quarkus configuration instead of keycloak.json. The second one is about lazy loading the HttpClient and to avoid creating a new instance during the deployment configuration. But produce a new instance only when a new instance is required. The main reason for this change is to overcome some issues in Quarkus when generating native images using the extension. Scott Stark started a thread [2] about this issue in particular. In a nutshell, we are basically delaying the initialization of HttpClient (and mainly its dependencies to some security related classes in the JDK) to runtime. Please, let me know what you think about these two changes, specially the second one. I can not think about any issue that the lazy initialization of the HttpClient can cause (considering concurrency issues), but maybe I'm missing something. [1] https://github.com/pedroigor/keycloak/tree/keycloak-adapter [2] https://groups.google.com/forum/#!topic/quarkus-dev/xVmL55tuWHY Regards, Pedro Igor