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java.lang.NullpointerException:null error #34

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didi4456 opened this issue Jan 17, 2020 · 8 comments · Fixed by #38
Closed

java.lang.NullpointerException:null error #34

didi4456 opened this issue Jan 17, 2020 · 8 comments · Fixed by #38

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@didi4456
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Hello,

I followed the steps to set up keycloak integration, but it isn't working correctly.

I am able to log in as a keycloak user, but a java.lang.NullPointerException notification pops up andthe nexus page is blank and has no options.
Screen Shot 2020-01-17 at 1 21 01 PM

If I am logged into nexus as admin and Click on "Users" and change "Source" from local to keycloak, I'm unable to see the keycloak users and I get a "java.lang.NullPointerException" notification.
Screen Shot 2020-01-17 at 1 06 29 PM

Using 0.3.4-snapshot plugin. I set up a different instance of nexus using the same plugin version a while back, but had no issues with it and followed the same configurations for this instance.

Nexus logs for logging in as keycloak user, "test"

2020-01-17 21:24:56,799+0000 INFO  [qtp911606986-48]  *UNKNOWN org.github.flytreeleft.nexus3.keycloak.plugin.KeycloakAuthenticatingRealm - doGetAuthenticationInfo for test via org.apache.shiro.authc.UsernamePasswordToken: true
2020-01-17 21:24:56,800+0000 INFO  [qtp911606986-48]  test org.sonatype.nexus.rapture.internal.security.SessionServlet - Created session for user: test
2020-01-17 21:24:56,899+0000 INFO  [qtp911606986-44]  test org.github.flytreeleft.nexus3.keycloak.plugin.KeycloakAuthenticatingRealm - doGetAuthorizationInfo for test
2020-01-17 21:24:56,902+0000 WARN  [qtp911606986-44]  test org.sonatype.nexus.rapture.internal.state.StateComponent - Failed to get state from com.google.inject.internal.InjectorImpl$2 (ignored)
java.lang.NullPointerException: null
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.updateToken(KeycloakTokenManager.java:69)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.grantToken(KeycloakTokenManager.java:50)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.getAccessToken(KeycloakTokenManager.java:40)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.getAccessTokenString(KeycloakTokenManager.java:35)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakAdminClient.lambda$0(KeycloakAdminClient.java:307)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.http.HttpMethod.authentication(HttpMethod.java:137)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakAdminClient.getUser(KeycloakAdminClient.java:118)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.NexusKeycloakClient.findUserByUserId(NexusKeycloakClient.java:100)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakUserManager.getUser(KeycloakUserManager.java:77)
        at org.sonatype.nexus.security.internal.DefaultSecuritySystem.findUser(DefaultSecuritySystem.java:335)
        at org.sonatype.nexus.security.internal.DefaultSecuritySystem.getUser(DefaultSecuritySystem.java:364)
        at org.sonatype.nexus.security.internal.DefaultSecuritySystem.currentUser(DefaultSecuritySystem.java:355)
        at org.sonatype.nexus.internal.selector.SelectorManagerImpl.browseActive(SelectorManagerImpl.java:210)
        at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
        at org.sonatype.nexus.common.stateguard.StateGuard$GuardImpl.run(StateGuard.java:272)
        at org.sonatype.nexus.common.stateguard.GuardedInterceptor.invoke(GuardedInterceptor.java:53)
        at org.sonatype.nexus.repository.security.RepositoryPermissionChecker.subjectHasAnyContentSelectorAccessTo(RepositoryPermissionChecker.java:181)
        at org.sonatype.nexus.repository.security.RepositoryPermissionChecker.userCanBrowseRepositories(RepositoryPermissionChecker.java:98)
        at org.sonatype.nexus.repository.security.RepositoryPermissionChecker.userCanBrowseRepositories(RepositoryPermissionChecker.java:136)
        at org.sonatype.nexus.repository.security.RepositoryPermissionChecker$userCanBrowseRepositories.call(Unknown Source)
        at org.sonatype.nexus.coreui.RepositoryComponent.getBrowseableFormats(RepositoryComponent.groovy:137)
        at com.palominolabs.metrics.guice.ExceptionMeteredInterceptor.invoke(ExceptionMeteredInterceptor.java:23)
        at com.palominolabs.metrics.guice.TimedInterceptor.invoke(TimedInterceptor.java:26)
        at org.sonatype.nexus.coreui.RepositoryComponent.getState(RepositoryComponent.groovy:149)
        at org.sonatype.nexus.rapture.internal.state.StateComponent.getState(StateComponent.java:87)
        at com.palominolabs.metrics.guice.ExceptionMeteredInterceptor.invoke(ExceptionMeteredInterceptor.java:23)
        at com.palominolabs.metrics.guice.TimedInterceptor.invoke(TimedInterceptor.java:26)
        at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.invokeJavaMethod(DispatcherBase.java:142)
        at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.invokeMethod(DispatcherBase.java:133)
        at org.sonatype.nexus.extdirect.internal.ExtDirectDispatcher.invokeMethod(ExtDirectDispatcher.java:82)
        at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.dispatch(DispatcherBase.java:63)
        at com.softwarementors.extjs.djn.router.processor.poll.PollRequestProcessor.process(PollRequestProcessor.java:145)
        at org.sonatype.nexus.extdirect.internal.ExtDirectServlet$3.processPollRequest(ExtDirectServlet.java:253)
        at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.processRequest(DirectJNgineServlet.java:636)
        at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.doPost(DirectJNgineServlet.java:595)
        at org.sonatype.nexus.extdirect.internal.ExtDirectServlet.doPost(ExtDirectServlet.java:135)
        at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.doGet(DirectJNgineServlet.java:568)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:286)
        at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:276)
        at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:181)
        at com.google.inject.servlet.DynamicServletPipeline.service(DynamicServletPipeline.java:71)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
        at org.sonatype.nexus.security.SecurityFilter.executeChain(SecurityFilter.java:85)
        at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
        at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
        at org.sonatype.nexus.security.SecurityFilter.doFilterInternal(SecurityFilter.java:101)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at com.sonatype.nexus.licensing.internal.LicensingRedirectFilter.doFilter(LicensingRedirectFilter.java:114)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at com.codahale.metrics.servlet.AbstractInstrumentedFilter.doFilter(AbstractInstrumentedFilter.java:112)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.sonatype.nexus.internal.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:79)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.sonatype.nexus.internal.web.EnvironmentFilter.doFilter(EnvironmentFilter.java:101)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.sonatype.nexus.internal.web.HeaderPatternFilter.doFilter(HeaderPatternFilter.java:98)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at com.google.inject.servlet.DynamicFilterPipeline.dispatch(DynamicFilterPipeline.java:104)
        at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:135)
        at org.sonatype.nexus.bootstrap.osgi.DelegatingFilter.doFilter(DelegatingFilter.java:73)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1700)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1667)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at com.codahale.metrics.jetty9.InstrumentedHandler.handle(InstrumentedHandler.java:239)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:152)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.Server.handle(Server.java:505)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
        at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
        at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:698)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:804)
        at java.lang.Thread.run(Thread.java:748)
2020-01-17 21:24:56,903+0000 INFO  [qtp911606986-44]  test org.github.flytreeleft.nexus3.keycloak.plugin.KeycloakAuthenticatingRealm - doGetAuthorizationInfo for test
2020-01-17 21:24:56,955+0000 INFO  [qtp911606986-46]  test org.github.flytreeleft.nexus3.keycloak.plugin.KeycloakAuthenticatingRealm - doGetAuthorizationInfo for test
2020-01-17 21:24:56,956+0000 INFO  [qtp911606986-147]  test org.github.flytreeleft.nexus3.keycloak.plugin.KeycloakAuthenticatingRealm - doGetAuthorizationInfo for test

Nexus logs when trying to view keycloak users as admin:

2020-01-17 21:05:48,588+0000 INFO  [qtp911606986-46]  admin org.sonatype.nexus.rapture.internal.security.SessionServlet - Created session for user: admin
2020-01-17 21:06:16,236+0000 ERROR [qtp911606986-46]  admin org.sonatype.nexus.extdirect.internal.ExtDirectExceptionHandler - Failed to invoke action method: coreui_User.read, java-method: org.sonatype.nexus.coreui.UserComponent.read
java.lang.NullPointerException: null
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.updateToken(KeycloakTokenManager.java:69)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.grantToken(KeycloakTokenManager.java:50)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.getAccessToken(KeycloakTokenManager.java:40)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakTokenManager.getAccessTokenString(KeycloakTokenManager.java:35)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakAdminClient.lambda$0(KeycloakAdminClient.java:307)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.http.HttpMethod.authentication(HttpMethod.java:137)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakAdminClient.findUsers(KeycloakAdminClient.java:150)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.NexusKeycloakClient.findUserByCriteria(NexusKeycloakClient.java:149)
        at org.github.flytreeleft.nexus3.keycloak.plugin.internal.KeycloakUserManager.searchUsers(KeycloakUserManager.java:71)
        at org.sonatype.nexus.security.internal.DefaultSecuritySystem.searchUsers(DefaultSecuritySystem.java:416)
        at org.sonatype.nexus.security.SecuritySystem$searchUsers$5.call(Unknown Source)
        at org.sonatype.nexus.coreui.UserComponent.read(UserComponent.groovy:104)
        at com.palominolabs.metrics.guice.ExceptionMeteredInterceptor.invoke(ExceptionMeteredInterceptor.java:23)
        at com.palominolabs.metrics.guice.TimedInterceptor.invoke(TimedInterceptor.java:26)
        at org.apache.shiro.guice.aop.AopAllianceMethodInvocationAdapter.proceed(AopAllianceMethodInvocationAdapter.java:49)
        at org.apache.shiro.authz.aop.AuthorizingAnnotationMethodInterceptor.invoke(AuthorizingAnnotationMethodInterceptor.java:68)
        at org.apache.shiro.guice.aop.AopAllianceMethodInterceptorAdapter.invoke(AopAllianceMethodInterceptorAdapter.java:36)
        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 com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.invokeJavaMethod(DispatcherBase.java:142)
        at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.invokeMethod(DispatcherBase.java:133)
        at org.sonatype.nexus.extdirect.internal.ExtDirectDispatcher.invokeMethod(ExtDirectDispatcher.java:82)
        at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.dispatch(DispatcherBase.java:63)
        at com.softwarementors.extjs.djn.router.processor.standard.StandardRequestProcessorBase.dispatchStandardMethod(StandardRequestProcessorBase.java:73)
        at com.softwarementors.extjs.djn.router.processor.standard.json.JsonRequestProcessor.processIndividualRequest(JsonRequestProcessor.java:502)
        at com.softwarementors.extjs.djn.router.processor.standard.json.JsonRequestProcessor.processIndividualRequestsInThisThread(JsonRequestProcessor.java:150)
        at com.softwarementors.extjs.djn.router.processor.standard.json.JsonRequestProcessor.process(JsonRequestProcessor.java:133)
        at com.softwarementors.extjs.djn.router.RequestRouter.processJsonRequest(RequestRouter.java:83)
        at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.processRequest(DirectJNgineServlet.java:632)
        at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.doPost(DirectJNgineServlet.java:595)
        at org.sonatype.nexus.extdirect.internal.ExtDirectServlet.doPost(ExtDirectServlet.java:135)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:286)
        at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:276)
        at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:181)
        at com.google.inject.servlet.DynamicServletPipeline.service(DynamicServletPipeline.java:71)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
        at org.sonatype.nexus.security.SecurityFilter.executeChain(SecurityFilter.java:85)
        at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
        at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
        at org.sonatype.nexus.security.SecurityFilter.doFilterInternal(SecurityFilter.java:101)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at com.sonatype.nexus.licensing.internal.LicensingRedirectFilter.doFilter(LicensingRedirectFilter.java:114)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at com.codahale.metrics.servlet.AbstractInstrumentedFilter.doFilter(AbstractInstrumentedFilter.java:112)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.sonatype.nexus.internal.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:79)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.sonatype.nexus.internal.web.EnvironmentFilter.doFilter(EnvironmentFilter.java:101)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at org.sonatype.nexus.internal.web.HeaderPatternFilter.doFilter(HeaderPatternFilter.java:98)
        at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)
        at com.google.inject.servlet.DynamicFilterPipeline.dispatch(DynamicFilterPipeline.java:104)
        at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:135)
        at org.sonatype.nexus.bootstrap.osgi.DelegatingFilter.doFilter(DelegatingFilter.java:73)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1700)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1667)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at com.codahale.metrics.jetty9.InstrumentedHandler.handle(InstrumentedHandler.java:239)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:152)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
        at org.eclipse.jetty.server.Server.handle(Server.java:505)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
        at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
        at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:698)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:804)
        at java.lang.Thread.run(Thread.java:748)
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flytreeleft commented Jan 18, 2020 •
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@didi4456 What is the Keycloak's version you used? And please check and paste the Keycloak's log when NPE is occurred.

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didi4456 commented Jan 21, 2020 •
edited by flytreeleft
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@flytreeleft Thanks for looking into this.

Keycloak version 8.0.1
Keycloak Logs:

{"log":"\u001b[0m\u001b[33m19:09:37,441 WARN  [org.keycloak.events] (default task-95) type=LOGIN_ERROR, realmId=<realm-id>, clientId=nexus, userId=<user-id>, ipAddress=<ip-address>, error=invalid_user_credentials, auth_method=openid-connect, grant_type=password, client_auth_method=client-secret, username=test, authSessionParentId=0776d095-3934-4fe2-97ee-ca5c1269b298, authSessionTabId=ralgGm1ERFE\n","stream":"stdout","time":"2020-01-16T19:09:37.441376641Z"}

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peschmae commented Feb 3, 2020 •
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This same issue occurred with Keycloak 8 for me.

I've debugged it a bit, and realised that the Path generated contains a double slash:
http://keycloak:8080/auth//realms/master/protocol/openid-connect/token

I've then removed the trailing slash from the auth-server-url in the keycloak.json and then it worked.

It would probably make sense to check for this slash in the code, and strip it if this is something keycloak changed in the json

@peschmae peschmae mentioned this issue Feb 3, 2020
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@peschmae Thanks so much, the PR has been merged :).

@flytreeleft flytreeleft reopened this Feb 3, 2020
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nexus3-keycloak-plugin-0.4.0-SNAPSHOT.zip

@didi4456 Can you try to test the new compiled version as above? It contains the bugfix of PR #38. Note: please change the suffix .zip to .jar.

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@didi4456 I have created a pre-release version 0.3.5-pre0-SNAPSHOT, you can try it.

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didi4456 commented Feb 5, 2020 •
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Hi @flytreeleft, thank you! The new 0.3.5 snapshot works with nexus 3.19.1! It looks like there is a bug if using the 0.3.5 snapshot with nexus 3.20.0 though, I get a 403 error. But, that is a totally separate issue. Thanks for your help!

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@didi4456 Good news. :)

Generally, the 403 error means that the Keycloak realm client (created for Nexus3) has no permission to read user, group or role, so just check the client permission following the README document.

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Avoid double slashes in URL peschmae/nexus3-keycloak-plugin
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@peschmae @flytreeleft @didi4456