Grails 5.1.8 + SAML fails

[jnunderwood]

Expected Behavior

Grails application should start without error. This works in when grailsVersion=5.1.7 is specified in gradle.properties.

Actual Behaviour

Changing to grailsVersion=5.1.8 in gradle.properties, the Grails application fails to start, producing this error:

Configuring Spring Security Core ...
... finished configuring Spring Security Core

Configuring Spring Security SAML ...
Importing beans from classpath:security/springSecuritySamlBeans.xml...
2022-06-02 15:47:51.263 [           @               ] ERROR --- org.springframework.boot.SpringApplication    : Application run failed

java.lang.NullPointerException: Cannot get property 'idpSelectionPath' on null object
        at org.codehaus.groovy.runtime.NullObject.getProperty(NullObject.java:60)
        at org.codehaus.groovy.runtime.InvokerHelper.getProperty(InvokerHelper.java:194)
        at org.codehaus.groovy.runtime.callsite.NullCallSite.getProperty(NullCallSite.java:46)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:329)
        at org.grails.plugin.springsecurity.saml.SpringSecuritySamlGrailsPlugin$_doWithSpring_closure1.doCall(SpringSecuritySamlGrailsPlugin.groovy:124)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:323)
        at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:274)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1035)
        at groovy.lang.Closure.call(Closure.java:412)
        at groovy.lang.Closure.call(Closure.java:406)
        at grails.spring.BeanBuilder.invokeBeanDefiningClosure(BeanBuilder.java:759)
        at grails.spring.BeanBuilder.beans(BeanBuilder.java:588)
        at grails.spring.BeanBuilder.invokeMethod(BeanBuilder.java:531)
        at org.grails.plugins.DefaultGrailsPlugin.doWithRuntimeConfiguration(DefaultGrailsPlugin.java:543)
        at org.grails.plugins.AbstractGrailsPluginManager.doRuntimeConfiguration(AbstractGrailsPluginManager.java:166)
        at grails.boot.config.GrailsApplicationPostProcessor.postProcessBeanDefinitionRegistry(GrailsApplicationPostProcessor.groovy:171)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:142)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
        at grails.boot.GrailsApp.run(GrailsApp.groovy:99)
        at grails.boot.GrailsApp.run(GrailsApp.groovy:485)
        at grails.boot.GrailsApp.run(GrailsApp.groovy:472)
        at grails.boot.GrailsApp$run.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:148)
        at evc.Application.main(Application.groovy:14)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
        at org.springframework.boot.loader.WarLauncher.main(WarLauncher.java:59)

Steps To Reproduce

No response

Environment Information

• Operating system: Ubuntu Linux 20.04
• Grails: 5.1.8
• SAML Plugin: 4.0.2

Note: normally I would suspect the SAML plugin to be the problem, but it has been working fine using various versions of Grails 4 and Grails 5. It only stopped working with v5.1.8.

Example Application

No response

Version

5.1.8

[lynchie14]

More than likely related to https://github.com/grails/grails-core/pull/12535

[puneetbehl]

Thank you for taking time to report this issue. It would be great if you could share the steps to replicate. There has been some improvements around accessing configuration and deprecating NavigableMap but I would like to understand why this particular change affected your application.

[virtualdogbert]

Strange I couldn't get the Saml plugin to work with Grails 5.1.7 or 5.1.8 and got the error I raised here which is different: https://github.com/jeffwils/grails-spring-security-saml/issues/74

Removing the saml plugin allowed my app to run...

[puneetbehl]

From the latest comment at https://github.com/jeffwils/grails-spring-security-saml/issues/74 it appears to be resolved.