Create generic DocRequest to better categorize ActionRequests

CHANGELOG.md

@@ -24,6 +24,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Decouple the init of Crypto Plugin and KeyProvider in CryptoRegistry ([18270](https://github.com/opensearch-project/OpenSearch/pull18270)))
 
 ### Changed
+- Create generic DocRequest to better categorize ActionRequests ([#18269](https://github.com/opensearch-project/OpenSearch/pull/18269)))
 
 ### Dependencies
 - Bump `com.google.code.gson:gson` from 2.12.1 to 2.13.1 ([#17923](https://github.com/opensearch-project/OpenSearch/pull/17923), [#18266](https://github.com/opensearch-project/OpenSearch/pull/18266))

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

@@ -0,0 +1,31 @@
+/*
+ * 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.action;
+
+import org.opensearch.common.annotation.PublicApi;
+
+/**
+ * Generic interface to group ActionRequest, which perform actions on a single document
+ *
+ * @opensearch.api
+ */
+@PublicApi(since = "3.1.0")
+public interface DocRequest {
+    /**
+     * Get the index that this request operates on
+     * @return the index
+     */
+    String index();
+
+    /**
+     * Get the id of the document for this request
+     * @return the id
+     */
+    String id();
+}

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

@@ -59,7 +59,7 @@
  * @opensearch.api
  */
 @PublicApi(since = "1.0.0")
-public interface DocWriteRequest<T> extends IndicesRequest, Accountable {
+public interface DocWriteRequest<T> extends IndicesRequest, DocRequest, Accountable {
 
     // Flag set for disallowing index auto creation for an individual write request.
     String REQUIRE_ALIAS = "require_alias";
@@ -70,18 +70,6 @@ public interface DocWriteRequest<T> extends IndicesRequest, Accountable {
      */
     T index(String index);
 
-    /**
-     * Get the index that this request operates on
-     * @return the index
-     */
-    String index();
-
-    /**
-     * Get the id of the document for this request
-     * @return the id
-     */
-    String id();
-
     /**
      * Get the options for this request
      * @return the indices options

server/src/main/java/org/opensearch/action/get/GetRequest.java

@@ -34,6 +34,7 @@
 
 import org.opensearch.Version;
 import org.opensearch.action.ActionRequestValidationException;
+import org.opensearch.action.DocRequest;
 import org.opensearch.action.RealtimeRequest;
 import org.opensearch.action.ValidateActions;
 import org.opensearch.action.support.single.shard.SingleShardRequest;
@@ -49,6 +50,7 @@
 import org.opensearch.transport.client.Requests;
 
 import java.io.IOException;
+import java.util.Objects;
 
 import static org.opensearch.action.ValidateActions.addValidationError;
 
@@ -66,7 +68,7 @@
  * @opensearch.api
  */
 @PublicApi(since = "1.0.0")
-public class GetRequest extends SingleShardRequest<GetRequest> implements RealtimeRequest {
+public class GetRequest extends SingleShardRequest<GetRequest> implements RealtimeRequest, DocRequest {
 
     private String id;
     private String routing;
@@ -163,6 +165,12 @@ public GetRequest preference(String preference) {
         return this;
     }
 
+    @Override
+    public String index() {
+        return Objects.requireNonNull(super.index());
+    }
+
+    @Override
     public String id() {
         return id;
     }