Add listenable TransportRequestHandler in TransportNodesAction

Signed-off-by: zane-neo <zaniu@amazon.com>

server/src/main/java/org/opensearch/action/support/nodes/TransportNodesAction.java

@@ -116,9 +116,50 @@ protected TransportNodesAction(
         transportService.registerRequestHandler(transportNodeAction, nodeExecutor, nodeRequest, new NodeTransportHandler());
     }
 
+    /**
+     * @param actionName        action name
+     * @param threadPool        thread-pool
+     * @param clusterService    cluster service
+     * @param transportService  transport service
+     * @param actionFilters     action filters
+     * @param request           node request writer
+     * @param nodeRequest       node request reader
+     * @param nodeExecutor      executor to execute node action on
+     * @param finalExecutor     executor to execute final collection of all responses on
+     * @param listenableHandler true if the handler should be a listenable handler
+     * @param nodeResponseClass class of the node responses
+     */
+    protected TransportNodesAction(
+        String actionName,
+        ThreadPool threadPool,
+        ClusterService clusterService,
+        TransportService transportService,
+        ActionFilters actionFilters,
+        Writeable.Reader<NodesRequest> request,
+        Writeable.Reader<NodeRequest> nodeRequest,
+        String nodeExecutor,
+        String finalExecutor,
+        boolean listenableHandler,
+        Class<NodeResponse> nodeResponseClass
+    ) {
+        super(actionName, transportService, actionFilters, request);
+        this.threadPool = threadPool;
+        this.clusterService = Objects.requireNonNull(clusterService);
+        this.transportService = Objects.requireNonNull(transportService);
+        this.nodeResponseClass = Objects.requireNonNull(nodeResponseClass);
+
+        this.transportNodeAction = actionName + "[n]";
+        this.finalExecutor = finalExecutor;
+        if (listenableHandler) {
+            transportService.registerRequestHandler(transportNodeAction, nodeExecutor, nodeRequest, new ListenableNodeTransportHandler());
+        } else {
+            transportService.registerRequestHandler(transportNodeAction, nodeExecutor, nodeRequest, new NodeTransportHandler());
+        }
+    }
+
     /**
      * Same as {@link #TransportNodesAction(String, ThreadPool, ClusterService, TransportService, ActionFilters, Writeable.Reader,
-     * Writeable.Reader, String, String, Class)} but executes final response collection on the transport thread except for when the final
+     * Writeable.Reader, String, String, boolean, Class)} but executes final response collection on the transport thread except for when the final
      * node response is received from the local node, in which case {@code nodeExecutor} is used.
      * This constructor should only be used for actions for which the creation of the final response is fast enough to be safely executed
      * on a transport thread.
@@ -144,6 +185,7 @@ protected TransportNodesAction(
             nodeRequest,
             nodeExecutor,
             ThreadPool.Names.SAME,
+            false,
             nodeResponseClass
         );
     }
@@ -196,6 +238,8 @@ protected NodesResponse newResponse(NodesRequest request, AtomicReferenceArray<?
 
     protected abstract NodeResponse nodeOperation(NodeRequest request);
 
+    protected void nodeOperation(NodeRequest request, ActionListener<NodeResponse> actionListener) {}
+
     protected NodeResponse nodeOperation(NodeRequest request, Task task) {
         return nodeOperation(request);
     }
@@ -337,4 +381,14 @@ public void messageReceived(NodeRequest request, TransportChannel channel, Task
         }
     }
 
+    class ListenableNodeTransportHandler implements TransportRequestHandler<NodeRequest> {
+
+        @Override
+        public void messageReceived(NodeRequest request, TransportChannel channel, Task task) {
+            ActionListener<NodeResponse> listener = ActionListener.wrap(channel::sendResponse, e -> {
+                TransportChannel.sendErrorResponse(channel, actionName, request, e);
+            });
+            nodeOperation(request, listener);
+        }
+    }
 }