Pass resourceType instead of resourceIndex to resourceSharingClient

plugin/src/main/java/org/opensearch/ml/action/handler/MLSearchHandler.java

@@ -155,7 +155,7 @@ public void search(SdkClient sdkClient, SearchRequest request, String tenantId,
                 && hasModelGroupIndex) {
                 // RSC fast-path: get accessible group IDs → gate models (IDs or missing)
                 var rsc = ResourceSharingClientAccessor.getInstance().getResourceSharingClient();
-                rsc.getAccessibleResourceIds(CommonValue.ML_MODEL_GROUP_INDEX, ActionListener.wrap(ids -> {
+                rsc.getAccessibleResourceIds(ML_MODEL_GROUP_RESOURCE_TYPE, ActionListener.wrap(ids -> {
                     SearchSourceBuilder gated = Optional.ofNullable(request.source()).orElseGet(SearchSourceBuilder::new);
                     gated.query(rewriteQueryBuilderRSC(gated.query(), ids)); // ids may be empty → "missing only"
                     request.source(gated);

plugin/src/main/java/org/opensearch/ml/action/model_group/SearchModelGroupTransportAction.java

@@ -6,7 +6,6 @@
 package org.opensearch.ml.action.model_group;
 
 import static org.opensearch.ml.action.handler.MLSearchHandler.wrapRestActionListener;
-import static org.opensearch.ml.common.CommonValue.ML_MODEL_GROUP_INDEX;
 import static org.opensearch.ml.common.CommonValue.ML_MODEL_GROUP_RESOURCE_TYPE;
 import static org.opensearch.ml.helper.ModelAccessControlHelper.shouldUseResourceAuthz;
 import static org.opensearch.ml.utils.RestActionUtils.wrapListenerToHandleSearchIndexNotFound;
@@ -116,7 +115,7 @@ private void addAccessibleModelGroupsFilterAndSearch(
         SearchSourceBuilder sourceBuilder = request.source() != null ? request.source() : new SearchSourceBuilder();
         var rsc = ResourceSharingClientAccessor.getInstance().getResourceSharingClient();
         // filter by accessible model-groups
-        rsc.getAccessibleResourceIds(ML_MODEL_GROUP_INDEX, ActionListener.wrap(ids -> {
+        rsc.getAccessibleResourceIds(ML_MODEL_GROUP_RESOURCE_TYPE, ActionListener.wrap(ids -> {
             sourceBuilder.query(modelAccessControlHelper.mergeWithAccessFilter(sourceBuilder.query(), ids));
             request.source(sourceBuilder);
             search(tenantId, request, wrappedListener);

plugin/src/main/java/org/opensearch/ml/helper/ModelAccessControlHelper.java

@@ -100,7 +100,7 @@ public void validateModelGroupAccess(User user, String modelGroupId, String acti
         }
         if (shouldUseResourceAuthz(ML_MODEL_GROUP_RESOURCE_TYPE)) {
             var resourceSharingClient = ResourceSharingClientAccessor.getInstance().getResourceSharingClient();
-            resourceSharingClient.verifyAccess(modelGroupId, ML_MODEL_GROUP_INDEX, action, ActionListener.wrap(isAuthorized -> {
+            resourceSharingClient.verifyAccess(modelGroupId, ML_MODEL_GROUP_RESOURCE_TYPE, action, ActionListener.wrap(isAuthorized -> {
                 if (!isAuthorized) {
                     listener
                         .onFailure(
@@ -175,7 +175,7 @@ public void validateModelGroupAccess(
         }
         if (shouldUseResourceAuthz(ML_MODEL_GROUP_RESOURCE_TYPE)) {
             var resourceSharingClient = ResourceSharingClientAccessor.getInstance().getResourceSharingClient();
-            resourceSharingClient.verifyAccess(modelGroupId, ML_MODEL_GROUP_INDEX, action, ActionListener.wrap(isAuthorized -> {
+            resourceSharingClient.verifyAccess(modelGroupId, ML_MODEL_GROUP_RESOURCE_TYPE, action, ActionListener.wrap(isAuthorized -> {
                 if (!isAuthorized) {
                     listener
                         .onFailure(

plugin/src/main/java/org/opensearch/ml/resources/MLResourceSharingExtension.java

@@ -17,9 +17,22 @@
 
 public class MLResourceSharingExtension implements ResourceSharingExtension {
 
+    private static final ResourceProvider MODEL_GROUP_PROVIDER = new ResourceProvider() {
+
+        @Override
+        public String resourceType() {
+            return ML_MODEL_GROUP_RESOURCE_TYPE;
+        }
+
+        @Override
+        public String resourceIndexName() {
+            return ML_MODEL_GROUP_INDEX;
+        }
+    };
+
     @Override
     public Set<ResourceProvider> getResourceProviders() {
-        return Set.of(new ResourceProvider(ML_MODEL_GROUP_RESOURCE_TYPE, ML_MODEL_GROUP_INDEX));
+        return Set.of(MODEL_GROUP_PROVIDER);
     }
 
     @Override

plugin/src/test/java/org/opensearch/ml/action/model_group/SearchModelGroupTransportActionTests.java

@@ -12,6 +12,7 @@
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
+import static org.opensearch.ml.common.CommonValue.ML_MODEL_GROUP_RESOURCE_TYPE;
 
 import java.util.Collections;
 import java.util.Set;
@@ -283,7 +284,7 @@ public void testResourceSharingEnabled_successPath_filtersByAccessibleIds_andCal
 
         searchModelGroupTransportAction.doExecute(null, req, actionListener);
 
-        verify(rsc).getAccessibleResourceIds(eq(CommonValue.ML_MODEL_GROUP_INDEX), rscListenerCaptor.capture());
+        verify(rsc).getAccessibleResourceIds(eq(ML_MODEL_GROUP_RESOURCE_TYPE), rscListenerCaptor.capture());
         rscListenerCaptor.getValue().onResponse(Set.of("idA", "idB"));
         future.complete(emptySearchDataObjectResponse());
 
@@ -317,7 +318,7 @@ public void testResourceSharingEnabled_failSafePath_usesEmptySet_andCallsSdkClie
         searchModelGroupTransportAction.doExecute(null, req, actionListener);
 
         // Simulate failure -> deny-all (empty set)
-        verify(rsc).getAccessibleResourceIds(eq(CommonValue.ML_MODEL_GROUP_INDEX), rscListenerCaptor.capture());
+        verify(rsc).getAccessibleResourceIds(eq(ML_MODEL_GROUP_RESOURCE_TYPE), rscListenerCaptor.capture());
         rscListenerCaptor.getValue().onFailure(new RuntimeException("boom"));
 
         future.complete(emptySearchDataObjectResponse());

plugin/src/test/java/org/opensearch/ml/resources/MLResourceSharingExtensionTests.java

@@ -67,7 +67,17 @@ public void testGetResourceProviders_returnsUnmodifiableSet() {
         Set<ResourceProvider> providers = ext.getResourceProviders();
 
         // Attempt to modify — Set.of(...) should be unmodifiable and throw
-        providers.add(new ResourceProvider("some.Type", "some-index"));
+        providers.add(new ResourceProvider() {
+            @Override
+            public String resourceType() {
+                return "exampleType";
+            }
+
+            @Override
+            public String resourceIndexName() {
+                return "some-index";
+            }
+        });
     }
 
     @Test