This knox-pac4j-demo is a Knox installation to test the gateway-provider-security-pac4j federation gateway with various authentication mechanisms: Facebook, Twitter, basic auth, CAS, SAML or OpenID Connect.
Start the Knox gateway on https://127.0.0.1:8443:
cd knox-pac4j-demo
java -jar bin\gateway.jar
Use: java -agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005 -jar bin\gateway.jar for debugging.
Assuming you have an Hadoop cluster running with WebHDFS on http://localhost:50070/webhdfs, you can call it through the sandbox gateway configuration using the following url: https://127.0.0.1:8443/gateway/sandbox/webhdfs/v1/tmp?op=LISTSTATUS.
This sandbox configuration requires the SSO session to be established (SSOCookieProvider) by the idp topology which is protected by pac4j. By default, you must login via an online CAS server (login = pwd, wait a little before the server wakes up).
You can though configure the pac4j gateway provider to use other authentication mechanisms as described in the documentation.