Re: [keycloak-user] Occasional NPE while retrieving token

Hello Marek, It looks like we've cornered the issue after all :-) I managed to reproduce it on a relatively clean keycloak setup with the following steps: 1. Create application app-dg that will be used to get tokens using direct access grants. Accesstype: Public Direct Grants Onlye: true 2. Create application app-test. AccessType: Bearer only 3. Create application level role 'role-test' in app-test. 4. Create user user-test. Assign it application level role app-test:role-test and set his password to 'password' 5. Retrieve a token for user-test using direct access grants: $ curl -k -X POST http://127.0.0.1:8080/auth/realms/restcomm/protocol/openid-connect/token -d "grant_type=password" -d "client_id=app-dg" -d "username=user-test" -d "password=password" And the token: { "jti": "f68e595e-d612-42a1-b4f2-0af2b32b7dd7", "exp": 1441881384, "nbf": 0, "iat": 1441877784, "iss": "http://127.0.0.1:8080/auth/realms/restcomm", "aud": "app-dg", "sub": "067021e3-0fac-49dd-931b-1d26eb8ceb70", "azp": "app-dg", "session_state": "03903e0d-4748-4aba-bf5e-c0529757c13d", "client_session": "7f8417c0-9fd0-4e65-a3d8-a9335cb1f704", "allowed-origins": [], "resource_access": { "app-test": { "roles": [ "role-test" ] }, "account": { "roles": [ "view-profile", "manage-account" ] } }, "name": "", "preferred_username": "user-test" } 6. Remove app-test 7. Try to retrieve a token once more and the error appears: 12:39:37,260 ERROR [io.undertow.request] (default task-17) UT005023: Exception handling request to /auth/realms/restcomm/protocol/openid-connect/token: java.lang.RuntimeException: request path: /auth/realms/restcomm/protocol/openid-connect/token 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$1.run(HttpServerExchange.java:774) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) 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$FilterChainImpl.doFilter(FilterHandler.java:130) at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:59) ... 29 more Caused by: java.lang.NullPointerException at org.keycloak.protocol.oidc.TokenManager.addComposites(TokenManager.java:353) at org.keycloak.protocol.oidc.TokenManager.createClientAccessToken(TokenManager.java:193) at org.keycloak.protocol.oidc.TokenManager$AccessTokenResponseBuilder.generateAccessToken(TokenManager.java:412) at org.keycloak.protocol.oidc.endpoints.TokenEndpoint.buildResourceOwnerPasswordCredentialsGrant(TokenEndpoint.java:358) at org.keycloak.protocol.oidc.endpoints.TokenEndpoint.build(TokenEndpoint.java:113) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) 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:103) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) ... 37 more I rule i tried to make up is the following: "If for user Alice exists an active token with application roles for an application and this application is removed, you can't get a token for this user anymore" Also note that in my tests i've increased realm 'Access token lifespan' to 60 min. Maybe having a short lifespan discards the token before making any damage and the exception is not thrown. Just guessing here... I hope this helps Regards Orestis On Fri, Sep 4, 2015 at 11:54 AM, Orestis Tsakiridis < orestis.tsakiridis(a)telestax.com&gt; wrote: