[keycloak-user] Authenticator SPI dependencies NoClassDefFoundError

[Schaar, Andrew]

Hello,

I have a custom Authenticator SPI where we are trying to extend AbstractIdpAuthenticator.java with our own authenticate implementations.

I am putting the jar in /standalone/deployments as per https://www.keycloak.org/docs/latest/server_development/index.html#using-the-keycloak-deployer

When the provider is called, we get a NoClassDefFoundError for AbstractIdpAuthenticator. It seems classes from the keycloak-services dependency are not available to this jar. Why might that be the case?

13:58:16,447 ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-13) Uncaught server error: java.lang.NoClassDefFoundError: Failed to link com/bsb/user/authenticator/BsbAuthenticator (Module "deployment.bsb-user-authenticator-spi-0.1.0-dev.10.uncommitted+bsb-user-authentication-spi.2a2cc9d.jar" from Service Module Loader): org/keycloak/authentication/authenticators/broker/AbstractIdpAuthenticator
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
  at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:446)
  at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:274)
  at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:77)
  at org.jboss.modules.Module.loadModuleClass(Module.java:713)
  at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
  at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:412)
  at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:400)
  at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
  at com.bsb.user.authenticator.BsbAuthenticatorFactory.create(BsbAuthenticatorFactory.java:27)
  at com.bsb.user.authenticator.BsbAuthenticatorFactory.create(BsbAuthenticatorFactory.java:16)
  at org.keycloak.authentication.DefaultAuthenticationFlow.processFlow(DefaultAuthenticationFlow.java:164)
  at org.keycloak.authentication.DefaultAuthenticationFlow.processFlow(DefaultAuthenticationFlow.java:127)
  at org.keycloak.authentication.AuthenticationProcessor.authenticateOnly(AuthenticationProcessor.java:853)
  at org.keycloak.authentication.AuthenticationProcessor.authenticate(AuthenticationProcessor.java:722)
  at org.keycloak.services.resources.LoginActionsService.processFlow(LoginActionsService.java:286)
  at org.keycloak.services.resources.LoginActionsService.brokerLoginFlow(LoginActionsService.java:753)
  at org.keycloak.services.resources.LoginActionsService.firstBrokerLoginGet(LoginActionsService.java:669)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140)
  at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)
  at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)
  at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)
  at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)
  at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:406)
  at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:213)
  at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:228)
  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:85)
  at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
  at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:90)
  at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
  at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
 at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
  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:60)
  at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
  at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
  at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
  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 org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
  at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
  at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
  at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
  at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
  at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
  at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
  at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
  at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
  at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
  at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
  at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
  at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
  at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
  at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
  at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
  at io.undertow.server.Connectors.executeRootHandler(Connectors.java:326)
  at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:812)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at java.lang.Thread.run(Thread.java:748)


Thanks!
Andy