Trivial Description
I noticed that if you enter bad regex into a routing rule and click test, the UI fires a 500 error and the below in the nexus.log. There is validation of the regex on save as well as the error relays it's bad, so the 500 errors seems overkill to me, seems the error could be defined in the popup or even validation performed.
karaf@root()> 2019-08-19 16:00:58,760-0400 WARN [qtp1306442607-534] admin org.sonatype.nexus.siesta.internal.UnexpectedExceptionMapper - (ID da0f319b-3cde-4eaa-8594-f1ae62bba5e0) Unexpected exception: java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^ java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^ at java.util.regex.Pattern.error(Pattern.java:1957) at java.util.regex.Pattern.clazz(Pattern.java:2550) at java.util.regex.Pattern.sequence(Pattern.java:2065) at java.util.regex.Pattern.expr(Pattern.java:1998) at java.util.regex.Pattern.compile(Pattern.java:1698) at java.util.regex.Pattern.<init>(Pattern.java:1351) at java.util.regex.Pattern.compile(Pattern.java:1028) at java.util.regex.Pattern.matches(Pattern.java:1133) at java.lang.String.matches(String.java:2121) at java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1359) at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126) at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:498) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:485) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:449) at org.sonatype.nexus.repository.routing.internal.RoutingRuleHelperImpl.isAllowed(RoutingRuleHelperImpl.java:95) at org.sonatype.nexus.coreui.RoutingRulesResource.isAllowed(RoutingRulesResource.java:121) 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 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 org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140) at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:294) at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:248) at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:235) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:402) at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:209) at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:227) 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 org.sonatype.nexus.siesta.internal.resteasy.ComponentContainerImpl.service(ComponentContainerImpl.java:106) at org.sonatype.nexus.siesta.SiestaServlet.service(SiestaServlet.java:137) 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) 2019-08-19 16:00:58,763-0400 WARN [qtp1306442607-534] admin org.sonatype.nexus.siesta.internal.UnexpectedExceptionMapper - (ID da0f319b-3cde-4eaa-8594-f1ae62bba5e0) Response: [500] 'ERROR: (ID da0f319b-3cde-4eaa-8594-f1ae62bba5e0) java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^'; mapped from: java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^