Add changes to block calls in cat shards, indices and segments based …

CHANGELOG.md

@@ -18,6 +18,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add new metric REMOTE_STORE to NodeStats API response ([#15611](https://github.com/opensearch-project/OpenSearch/pull/15611))
 - New `phone` & `phone-search` analyzer + tokenizer ([#15915](https://github.com/opensearch-project/OpenSearch/pull/15915))
 - Add _list/indices API as paginated alternate to _cat/indices ([#14718](https://github.com/opensearch-project/OpenSearch/pull/14718))
+- Add changes to block calls in cat shards, indices and segments based on dynamic limit settings ([#15986](https://github.com/opensearch-project/OpenSearch/pull/15986))
 
 ### Dependencies
 - Bump `org.apache.logging.log4j:log4j-core` from 2.23.1 to 2.24.0 ([#15858](https://github.com/opensearch-project/OpenSearch/pull/15858))

server/src/main/java/org/opensearch/OpenSearchServerException.java

@@ -15,6 +15,7 @@
 import static org.opensearch.OpenSearchException.UNKNOWN_VERSION_ADDED;
 import static org.opensearch.Version.V_2_10_0;
 import static org.opensearch.Version.V_2_17_0;
+import static org.opensearch.Version.V_2_18_0;
 import static org.opensearch.Version.V_2_1_0;
 import static org.opensearch.Version.V_2_3_0;
 import static org.opensearch.Version.V_2_4_0;
@@ -1188,6 +1189,14 @@ public static void registerExceptions() {
                 V_2_17_0
             )
         );
+        registerExceptionHandle(
+            new OpenSearchExceptionHandle(
+                org.opensearch.common.breaker.ResponseLimitBreachedException.class,
+                org.opensearch.common.breaker.ResponseLimitBreachedException::new,
+                175,
+                V_2_18_0
+            )
+        );
         registerExceptionHandle(
             new OpenSearchExceptionHandle(
                 org.opensearch.cluster.block.IndexCreateBlockException.class,

server/src/main/java/org/opensearch/action/ActionModule.java

@@ -294,6 +294,7 @@
 import org.opensearch.cluster.node.DiscoveryNodes;
 import org.opensearch.common.NamedRegistry;
 import org.opensearch.common.annotation.PublicApi;
+import org.opensearch.common.breaker.ResponseLimitSettings;
 import org.opensearch.common.inject.AbstractModule;
 import org.opensearch.common.inject.TypeLiteral;
 import org.opensearch.common.inject.multibindings.MapBinder;
@@ -525,6 +526,7 @@ public class ActionModule extends AbstractModule {
     private final RequestValidators<IndicesAliasesRequest> indicesAliasesRequestRequestValidators;
     private final ThreadPool threadPool;
     private final ExtensionsManager extensionsManager;
+    private final ResponseLimitSettings responseLimitSettings;
 
     public ActionModule(
         Settings settings,
@@ -580,6 +582,7 @@ public ActionModule(
         );
 
         restController = new RestController(headers, restWrapper, nodeClient, circuitBreakerService, usageService);
+        responseLimitSettings = new ResponseLimitSettings(clusterSettings, settings);
     }
 
     public Map<String, ActionHandler<?, ?>> getActions() {
@@ -949,8 +952,8 @@ public void initRestHandlers(Supplier<DiscoveryNodes> nodesInCluster) {
         registerHandler.accept(new RestClusterManagerAction());
         registerHandler.accept(new RestNodesAction());
         registerHandler.accept(new RestTasksAction(nodesInCluster));
-        registerHandler.accept(new RestIndicesAction());
-        registerHandler.accept(new RestSegmentsAction());
+        registerHandler.accept(new RestIndicesAction(responseLimitSettings));
+        registerHandler.accept(new RestSegmentsAction(responseLimitSettings));
         // Fully qualified to prevent interference with rest.action.count.RestCountAction
         registerHandler.accept(new org.opensearch.rest.action.cat.RestCountAction());
         // Fully qualified to prevent interference with rest.action.indices.RestRecoveryAction
@@ -970,7 +973,7 @@ public void initRestHandlers(Supplier<DiscoveryNodes> nodesInCluster) {
         registerHandler.accept(new RestTemplatesAction());
 
         // LIST API
-        registerHandler.accept(new RestIndicesListAction());
+        registerHandler.accept(new RestIndicesListAction(responseLimitSettings));
 
         // Point in time API
         registerHandler.accept(new RestCreatePitAction());
@@ -1041,6 +1044,8 @@ protected void configure() {
 
         // register dynamic ActionType -> transportAction Map used by NodeClient
         bind(DynamicActionRegistry.class).toInstance(dynamicActionRegistry);
+
+        bind(ResponseLimitSettings.class).toInstance(responseLimitSettings);
     }
 
     public ActionFilters getActionFilters() {

server/src/main/java/org/opensearch/action/admin/cluster/shards/CatShardsRequest.java

@@ -27,11 +27,13 @@
 
     private String[] indices;
     private TimeValue cancelAfterTimeInterval;
+    private boolean requestLimitCheckSupported;
 
     public CatShardsRequest() {}
 
     public CatShardsRequest(StreamInput in) throws IOException {
         super(in);
+        this.requestLimitCheckSupported = false;
     }
 
     @Override
@@ -55,6 +57,14 @@
         return this.cancelAfterTimeInterval;
     }
 
+    public void setRequestLimitCheckSupported(final boolean requestLimitCheckSupported) {
+        this.requestLimitCheckSupported = requestLimitCheckSupported;
+    }
+
+    public boolean isRequestLimitCheckSupported() {
+        return this.requestLimitCheckSupported;
+    }
+
     @Override
     public ClusterAdminTask createTask(long id, String type, String action, TaskId parentTaskId, Map<String, String> headers) {
         return new ClusterAdminTask(id, type, action, parentTaskId, headers, this.cancelAfterTimeInterval);

server/src/main/java/org/opensearch/action/admin/cluster/shards/TransportCatShardsAction.java

@@ -16,13 +16,19 @@
 import org.opensearch.action.support.HandledTransportAction;
 import org.opensearch.action.support.TimeoutTaskCancellationUtility;
 import org.opensearch.client.node.NodeClient;
+import org.opensearch.common.breaker.ResponseLimitBreachedException;
+import org.opensearch.common.breaker.ResponseLimitSettings;
 import org.opensearch.common.inject.Inject;
 import org.opensearch.core.action.ActionListener;
 import org.opensearch.core.action.NotifyOnceListener;
 import org.opensearch.tasks.CancellableTask;
 import org.opensearch.tasks.Task;
 import org.opensearch.transport.TransportService;
 
+import java.util.Objects;
+
+import static org.opensearch.common.breaker.ResponseLimitSettings.LimitEntity.SHARDS;
+
 /**
  * Perform cat shards action
  *
@@ -31,11 +37,18 @@
 public class TransportCatShardsAction extends HandledTransportAction<CatShardsRequest, CatShardsResponse> {
 
     private final NodeClient client;
+    private final ResponseLimitSettings responseLimitSettings;
 
     @Inject
-    public TransportCatShardsAction(NodeClient client, TransportService transportService, ActionFilters actionFilters) {
+    public TransportCatShardsAction(
+        NodeClient client,
+        TransportService transportService,
+        ActionFilters actionFilters,
+        ResponseLimitSettings responseLimitSettings
+    ) {
         super(CatShardsAction.NAME, transportService, actionFilters, CatShardsRequest::new);
         this.client = client;
+        this.responseLimitSettings = responseLimitSettings;
     }
 
     @Override
@@ -73,6 +86,7 @@
             client.admin().cluster().state(clusterStateRequest, new ActionListener<ClusterStateResponse>() {
                 @Override
                 public void onResponse(ClusterStateResponse clusterStateResponse) {
+                    validateRequestLimit(shardsRequest, clusterStateResponse, cancellableListener);
                     catShardsResponse.setClusterStateResponse(clusterStateResponse);
                     IndicesStatsRequest indicesStatsRequest = new IndicesStatsRequest();
                     indicesStatsRequest.setShouldCancelOnTimeout(true);
@@ -107,4 +121,19 @@
         }
 
     }
+
+    private void validateRequestLimit(
+        final CatShardsRequest shardsRequest,
+        final ClusterStateResponse clusterStateResponse,
+        final ActionListener<CatShardsResponse> listener
+    ) {
+        if (shardsRequest.isRequestLimitCheckSupported()
+            && Objects.nonNull(clusterStateResponse)
+            && Objects.nonNull(clusterStateResponse.getState())) {
+            int limit = responseLimitSettings.getCatShardsResponseLimit();
+            if (ResponseLimitSettings.isResponseLimitBreached(clusterStateResponse.getState().getRoutingTable(), SHARDS, limit)) {
+                listener.onFailure(new ResponseLimitBreachedException("Too many shards requested.", limit, SHARDS));
+            }
+        }
+    }
 }

server/src/main/java/org/opensearch/common/breaker/ResponseLimitBreachedException.java

@@ -0,0 +1,66 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.common.breaker;
+
+import org.opensearch.OpenSearchException;
+import org.opensearch.core.common.io.stream.StreamInput;
+import org.opensearch.core.common.io.stream.StreamOutput;
+import org.opensearch.core.rest.RestStatus;
+import org.opensearch.core.xcontent.XContentBuilder;
+
+import java.io.IOException;
+
+/**
+ * Thrown when api response breaches threshold limit.
+ *
+ * @opensearch.internal
+ */
+public class ResponseLimitBreachedException extends OpenSearchException {
+
+    private final int responseLimit;
+    private final ResponseLimitSettings.LimitEntity limitEntity;
+
+    public ResponseLimitBreachedException(StreamInput in) throws IOException {
+        super(in);
+        responseLimit = in.readVInt();
+        limitEntity = in.readEnum(ResponseLimitSettings.LimitEntity.class);
+    }
+
+    public ResponseLimitBreachedException(String msg, int responseLimit, ResponseLimitSettings.LimitEntity limitEntity) {
+        super(msg);
+        this.responseLimit = responseLimit;
+        this.limitEntity = limitEntity;
+    }
+
+    @Override
+    public void writeTo(StreamOutput out) throws IOException {
+        super.writeTo(out);
+        out.writeVInt(responseLimit);
+        out.writeEnum(limitEntity);
+    }
+
+    public int getResponseLimit() {
+        return responseLimit;
+    }
+
+    public ResponseLimitSettings.LimitEntity getLimitEntity() {
+        return limitEntity;
+    }
+
+    @Override
+    public RestStatus status() {
+        return RestStatus.TOO_MANY_REQUESTS;
+    }
+
+    @Override
+    protected void metadataToXContent(XContentBuilder builder, Params params) throws IOException {
+        builder.field("response_limit", responseLimit);
+        builder.field("limit_entity", limitEntity);
+    }
+}