Issue extracting multiple attributes from LDAP in Shibboleth 4.0.1

Feinstein, Moses moses.feinstein at touro.edu
Tue Nov 24 01:39:51 UTC 2020 

Would you happen to have an example of how I can extract multiple attributes and combine them together in Shibboleth 4.0.1? (it works for me in version 3.3.2)

For example if I need to extract "sn" and "givenName" from LDAP and return them as "displayName", is there a good example you can provide on how to do that?

In attribute resolver I used the following sample provided in the docs:

<AttributeDefinition id="template" xsi:type="Template">
               <InputDataConnector ref="myLdap" attributeNames="givenName" />
    <InputDataConnector ref="myLdap" attributeNames="sn" />
    <Template>${givenName}::${sn}</Template>
</AttributeDefinition>


The logs throw the following error:

Below it states
Plugin 'template' has a dependency on data connector 'myLdap' which doesn't exist

This does not seem to be accurate, since "myLdap" connector works just fine if I remove this configuration and I am able to extract single attributes from it.


2020-11-23 20:30:59,538 -  - ERROR [net.shibboleth.utilities.java.support.service.AbstractReloadableService:182] - Service 'shibboleth.AttributeResolverService': Initial load failed
net.shibboleth.utilities.java.support.service.ServiceException: Failed to load [file [/opt/shibboleth-idp/conf/attribute-resolver.xml]]
               at net.shibboleth.ext.spring.service.ReloadableSpringService.doReload(ReloadableSpringService.java:387)
               at net.shibboleth.utilities.java.support.service.AbstractReloadableService.doInitialize(AbstractReloadableService.java:176)
               at net.shibboleth.ext.spring.service.ReloadableSpringService.doInitialize(ReloadableSpringService.java:473)
               at net.shibboleth.utilities.java.support.component.AbstractInitializableComponent.initialize(AbstractInitializableComponent.java:61)
               at jdk.internal.reflect.GeneratedMethodAccessor44.invoke(Unknown Source)
               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.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1922)
               at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1864)
               at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1792)
               at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
               at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
               at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
               at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
               at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
               at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
               at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)
               at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
               at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
               at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:401)
               at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:292)
               at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)
               at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4686)
               at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5147)
               at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
               at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)
               at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
               at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
               at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:631)
               at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1830)
               at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
               at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
               at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
               at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118)
               at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:526)
               at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:425)
               at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576)
               at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309)
               at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
               at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423)
               at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366)
               at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936)
               at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
               at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
               at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384)
               at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374)
               at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
               at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
               at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140)
               at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909)
               at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
               at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
               at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421)
               at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
               at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
               at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
               at org.apache.catalina.startup.Catalina.start(Catalina.java:633)
               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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
               at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
Caused by: net.shibboleth.utilities.java.support.service.ServiceException: Unable to initialize attribute resolver for ApplicationContext:shibboleth.AttributeResolverService
               at net.shibboleth.idp.attribute.resolver.spring.impl.AttributeResolverServiceStrategy.apply(AttributeResolverServiceStrategy.java:89)
               at net.shibboleth.idp.attribute.resolver.spring.impl.AttributeResolverServiceStrategy.apply(AttributeResolverServiceStrategy.java:44)
               at net.shibboleth.ext.spring.service.ReloadableSpringService.doReload(ReloadableSpringService.java:384)
               ... 62 common frames omitted
Caused by: net.shibboleth.utilities.java.support.component.ComponentInitializationException: Attribute Resolver 'ShibbolethAttributeResolver': Plugin 'template' has a dependency on data connector 'myLdap' which doesn't exist
               at net.shibboleth.idp.attribute.resolver.impl.AttributeResolverImpl.checkPlugInDependencies(AttributeResolverImpl.java:705)
               at net.shibboleth.idp.attribute.resolver.impl.AttributeResolverImpl.doInitialize(AttributeResolverImpl.java:649)
               at net.shibboleth.utilities.java.support.component.AbstractInitializableComponent.initialize(AbstractInitializableComponent.java:61)
               at net.shibboleth.idp.attribute.resolver.spring.impl.AttributeResolverServiceStrategy.apply(AttributeResolverServiceStrategy.java:87)
               ... 64 common frames omitted







Moses Feinstein
Sr. Software / IAM Engineer, App Dev Dept
Touro College and University System

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