[keycloak-user] Class loading issue when refreshing token

[Guus der Kinderen]

Hello cloakees.

I'm having an interesting problem while using the admin-client from 1.9.1.
Initially, things go well. I can extract data as expected. However, after a
couple of minutes (I think when the admin-client-token needs refreshing),
I'm suddenly getting errors: "java.lang.IllegalArgumentException: interface
org.keycloak.admin.client.token.TokenService is not visible from class
loader" I added a full stacktrace below.

I find it odd that some functionality does work, but other does not. What's
causing this? keycloak-admin-client-1.9.1.Final.jar is on the classpath,
which is where that interface appears to live.

Regards,

  Guus

2016.03.24 10:18:50 WARN  [Jetty-QTP-AdminConsole-58]:
org.eclipse.jetty.servlet.ServletHandler - /user-summary.jsp
javax.ws.rs.ProcessingException: java.lang.IllegalArgumentException:
interface org.keycloak.admin.client.token.TokenService is not visible from
class loader
        at
org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.invoke(ClientInvocation.java:430)
        at
org.jboss.resteasy.client.jaxrs.internal.proxy.ClientInvoker.invoke(ClientInvoker.java:102)
        at
org.jboss.resteasy.client.jaxrs.internal.proxy.ClientProxy.invoke(ClientProxy.java:64)
        at com.sun.proxy.$Proxy26.search(Unknown Source)
        at
org.jivesoftware.openfire.plugin.KeycloakUserProvider.getUserCount(KeycloakUserProvider.java:134)
        at
org.jivesoftware.openfire.user.UserManager.getUserCount(UserManager.java:263)
        at
org.jivesoftware.openfire.admin.user_002dsummary_jsp._jspService(user_002dsummary_jsp.java:107)
        at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
        at
com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
        at
com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:76)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at
org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:53)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at
org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:80)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at
org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:162)
        at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
        at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
        at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
        at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
        at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
        at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
        at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
        at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
        at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
        at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
        at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
        at org.eclipse.jetty.server.Server.handle(Server.java:499)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
        at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
        at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
        at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
        at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: interface
org.keycloak.admin.client.token.TokenService is not visible from class
loader
        at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:581)
        at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:557)
        at java.lang.reflect.WeakCache$Factory.get(WeakCache.java:230)
        at java.lang.reflect.WeakCache.get(WeakCache.java:127)
        at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:419)
        at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:719)
        at
org.jboss.resteasy.client.jaxrs.ProxyBuilder.proxy(ProxyBuilder.java:70)
        at
org.jboss.resteasy.client.jaxrs.ProxyBuilder.build(ProxyBuilder.java:122)
        at
org.jboss.resteasy.client.jaxrs.internal.ClientWebTarget.proxy(ClientWebTarget.java:74)
        at
org.keycloak.admin.client.token.TokenManager.refreshToken(TokenManager.java:100)
        at
org.keycloak.admin.client.token.TokenManager.getAccessToken(TokenManager.java:59)
        at
org.keycloak.admin.client.token.TokenManager.getAccessTokenString(TokenManager.java:52)
        at
org.keycloak.admin.client.resource.BearerAuthFilter.filter(BearerAuthFilter.java:48)
        at
org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.invoke(ClientInvocation.java:413)
        ... 40 more
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