Hi,

As part of testing another issue (Distributed Keycloak user sessions using Infinispan), I upgraded my nodes to Keycloak 1.4.0 (grabbed release from here - http://central.maven.org/maven2/org/keycloak/keycloak-server-dist/1.4.0.Final/keycloak-server-dist-1.4.0.Final.tar.gz). I wiped out our Keycloak database and recreated it. After configuring our LDAP server (similar configuration which worked against Keycloak 1.3.1 Final), when we try to sync users we get following exception –

2015-07-29 09:00:42,062 ERROR [io.undertow.request] (default task-25) UT005023: Exception handling request to /auth/admin/realms/test/user-federation/instances/3ccbe831-2d9b-4253-8fe7-343d7ead505d/sync: java.lang.RuntimeException: request path: /auth/admin/realms/test/user-federation/instances/3ccbe831-2d9b-4253-8fe7-343d7ead505d/sync

        at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:73)

        at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)

        at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)

        at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85)

        at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

        at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

        at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

        at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

        at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

        at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)

        at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:72)

        at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

        at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

        at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:282)

        at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:261)

        at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:80)

        at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:172)

        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)

        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:774)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

        at java.lang.Thread.run(Unknown Source)

Caused by: org.jboss.resteasy.spi.UnhandledException: java.lang.NullPointerException

        at org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:76)

        at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:212)

        at org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149)

        at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:372)

        at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)

        at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)

        at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

        at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)

        at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130)

        at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:59)

        ... 29 more

Caused by: java.lang.NullPointerException

        at org.keycloak.models.cache.DefaultCacheUserProvider.getUserByUsername(DefaultCacheUserProvider.java:149)

        at org.keycloak.federation.ldap.LDAPFederationProviderFactory$2.run(LDAPFederationProviderFactory.java:294)

        at org.keycloak.models.utils.KeycloakModelUtils.runJobInTransaction(KeycloakModelUtils.java:242)

        at org.keycloak.federation.ldap.LDAPFederationProviderFactory.importLdapUsers(LDAPFederationProviderFactory.java:286)

        at org.keycloak.federation.ldap.LDAPFederationProviderFactory.syncImpl(LDAPFederationProviderFactory.java:241)

        at org.keycloak.federation.ldap.LDAPFederationProviderFactory.syncAllUsers(LDAPFederationProviderFactory.java:200)

        at org.keycloak.services.managers.UsersSyncManager.syncAllUsers(UsersSyncManager.java:50)

        at org.keycloak.services.resources.admin.UserFederationProviderResource.syncUsers(UserFederationProviderResource.java:143)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

        at java.lang.reflect.Method.invoke(Unknown Source)

        at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137)

        at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296)

        at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:140)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:109)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:135)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:109)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:135)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:109)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:135)

        at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:103)

        at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356)

        ... 37 more

Could this be a regression?

-- Rajat