SHIBUI-799: fix nameid filter init error during effective reload

backend/src/main/groovy/edu/internet2/tier/shibboleth/admin/ui/service/JPAMetadataResolverServiceImpl.groovy

@@ -7,6 +7,7 @@ import edu.internet2.tier.shibboleth.admin.ui.domain.filters.EntityRoleWhiteList
 import edu.internet2.tier.shibboleth.admin.ui.domain.filters.NameIdFormatFilter
 import edu.internet2.tier.shibboleth.admin.ui.domain.filters.RequiredValidUntilFilter
 import edu.internet2.tier.shibboleth.admin.ui.domain.filters.SignatureValidationFilter
+import edu.internet2.tier.shibboleth.admin.ui.domain.filters.opensaml.OpenSamlNameIdFormatFilter
 import edu.internet2.tier.shibboleth.admin.ui.domain.resolvers.DynamicHttpMetadataResolver
 import edu.internet2.tier.shibboleth.admin.ui.domain.resolvers.FileBackedHttpMetadataResolver
 import edu.internet2.tier.shibboleth.admin.ui.domain.resolvers.FilesystemMetadataResolver
@@ -99,7 +100,7 @@ class JPAMetadataResolverServiceImpl implements MetadataResolverService {
                 }
                 if(metadataFilter instanceof NameIdFormatFilter) {
                     NameIdFormatFilter nameIdFormatFilter = NameIdFormatFilter.cast(metadataFilter)
-                    NameIDFormatFilter openSamlTargetFilter = new NameIDFormatFilter()
+                    NameIDFormatFilter openSamlTargetFilter = new OpenSamlNameIdFormatFilter()
                     Map<Predicate<EntityDescriptor>, Collection<String>> predicateRules = [:]
                     nameIdFormatFilter.formats.each {
                         switch (it.type) {

backend/src/main/java/edu/internet2/tier/shibboleth/admin/ui/domain/filters/opensaml/OpenSamlNameIdFormatFilter.java

@@ -0,0 +1,34 @@
+package edu.internet2.tier.shibboleth.admin.ui.domain.filters.opensaml;
+
+import org.opensaml.core.xml.XMLObject;
+import org.opensaml.saml.metadata.resolver.filter.FilterException;
+import org.opensaml.saml.metadata.resolver.filter.impl.NameIDFormatFilter;
+import org.opensaml.saml.saml2.metadata.EntitiesDescriptor;
+import org.opensaml.saml.saml2.metadata.EntityDescriptor;
+
+import javax.annotation.Nullable;
+
+/**
+ * Extension to open saml type for workaround forced component initialization check. We need to override <i>filter</i>
+ * method to skip this check as we use re-filtering in Shib UI context just to reload effective metadata.
+ *
+ * @author Dmitriy Kopylenko
+ */
+public class OpenSamlNameIdFormatFilter extends NameIDFormatFilter {
+
+    @Nullable
+    @Override
+    public XMLObject filter(@Nullable XMLObject metadata) throws FilterException {
+        if (metadata == null) {
+            return null;
+        }
+
+        if (metadata instanceof EntitiesDescriptor) {
+            filterEntitiesDescriptor((EntitiesDescriptor) metadata);
+        } else {
+            filterEntityDescriptor((EntityDescriptor) metadata);
+        }
+
+        return metadata;
+    }
+}