Removing unused ReindexDataStreamAction.Response class (elastic#120321)

x-pack/plugin/migrate/src/internalClusterTest/java/org/elasticsearch/xpack/migrate/action/ReindexDataStreamTransportActionIT.java

@@ -28,7 +28,6 @@
 import org.elasticsearch.xcontent.XContentType;
 import org.elasticsearch.xpack.migrate.MigratePlugin;
 import org.elasticsearch.xpack.migrate.action.ReindexDataStreamAction.ReindexDataStreamRequest;
-import org.elasticsearch.xpack.migrate.action.ReindexDataStreamAction.ReindexDataStreamResponse;
 import org.elasticsearch.xpack.migrate.task.ReindexDataStreamEnrichedStatus;
 import org.elasticsearch.xpack.migrate.task.ReindexDataStreamTask;
 
@@ -61,8 +60,7 @@ public void testNonExistentDataStream() {
         );
         assertThrows(
             ResourceNotFoundException.class,
-            () -> client().execute(new ActionType<ReindexDataStreamResponse>(ReindexDataStreamAction.NAME), reindexDataStreamRequest)
-                .actionGet()
+            () -> client().execute(new ActionType<AcknowledgedResponse>(ReindexDataStreamAction.NAME), reindexDataStreamRequest).actionGet()
         );
     }
 
@@ -74,12 +72,11 @@ public void testAlreadyUpToDateDataStream() throws Exception {
             dataStreamName
         );
         final int backingIndexCount = createDataStream(dataStreamName);
-        ReindexDataStreamResponse response = client().execute(
-            new ActionType<ReindexDataStreamResponse>(ReindexDataStreamAction.NAME),
+        AcknowledgedResponse response = client().execute(
+            new ActionType<AcknowledgedResponse>(ReindexDataStreamAction.NAME),
             reindexDataStreamRequest
         ).actionGet();
-        String persistentTaskId = response.getTaskId();
-        assertThat(persistentTaskId, equalTo("reindex-data-stream-" + dataStreamName));
+        String persistentTaskId = "reindex-data-stream-" + dataStreamName;
         AtomicReference<ReindexDataStreamTask> runningTask = new AtomicReference<>();
         for (TransportService transportService : internalCluster().getInstances(TransportService.class)) {
             TaskManager taskManager = transportService.getTaskManager();

x-pack/plugin/migrate/src/main/java/org/elasticsearch/xpack/migrate/action/ReindexDataStreamAction.java

@@ -9,18 +9,17 @@
 
 import org.elasticsearch.action.ActionRequest;
 import org.elasticsearch.action.ActionRequestValidationException;
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.action.ActionType;
 import org.elasticsearch.action.IndicesRequest;
 import org.elasticsearch.action.support.IndicesOptions;
+import org.elasticsearch.action.support.master.AcknowledgedResponse;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.util.FeatureFlag;
 import org.elasticsearch.features.NodeFeature;
 import org.elasticsearch.xcontent.ConstructingObjectParser;
 import org.elasticsearch.xcontent.ParseField;
 import org.elasticsearch.xcontent.ToXContent;
-import org.elasticsearch.xcontent.ToXContentObject;
 import org.elasticsearch.xcontent.XContentBuilder;
 import org.elasticsearch.xcontent.XContentParser;
 
@@ -29,7 +28,7 @@
 import java.util.Objects;
 import java.util.function.Predicate;
 
-public class ReindexDataStreamAction extends ActionType<ReindexDataStreamAction.ReindexDataStreamResponse> {
+public class ReindexDataStreamAction extends ActionType<AcknowledgedResponse> {
     public static final FeatureFlag REINDEX_DATA_STREAM_FEATURE_FLAG = new FeatureFlag("reindex_data_stream");
     public static final String TASK_ID_PREFIX = "reindex-data-stream-";
 
@@ -47,48 +46,6 @@ public enum Mode {
         UPGRADE
     }
 
-    public static class ReindexDataStreamResponse extends ActionResponse implements ToXContentObject {
-        private final String taskId;
-
-        public ReindexDataStreamResponse(String taskId) {
-            super();
-            this.taskId = taskId;
-        }
-
-        public ReindexDataStreamResponse(StreamInput in) throws IOException {
-            super(in);
-            this.taskId = in.readString();
-        }
-
-        @Override
-        public void writeTo(StreamOutput out) throws IOException {
-            out.writeString(taskId);
-        }
-
-        @Override
-        public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
-            builder.startObject();
-            builder.field("acknowledged", true);
-            builder.endObject();
-            return builder;
-        }
-
-        public String getTaskId() {
-            return taskId;
-        }
-
-        @Override
-        public int hashCode() {
-            return Objects.hashCode(taskId);
-        }
-
-        @Override
-        public boolean equals(Object other) {
-            return other instanceof ReindexDataStreamResponse && taskId.equals(((ReindexDataStreamResponse) other).taskId);
-        }
-
-    }
-
     public static class ReindexDataStreamRequest extends ActionRequest implements IndicesRequest, ToXContent {
         private final Mode mode;
         private final String sourceDataStream;

x-pack/plugin/migrate/src/main/java/org/elasticsearch/xpack/migrate/action/ReindexDataStreamTransportAction.java

@@ -12,6 +12,7 @@
 import org.elasticsearch.action.ActionListener;
 import org.elasticsearch.action.support.ActionFilters;
 import org.elasticsearch.action.support.HandledTransportAction;
+import org.elasticsearch.action.support.master.AcknowledgedResponse;
 import org.elasticsearch.cluster.metadata.DataStream;
 import org.elasticsearch.cluster.metadata.Metadata;
 import org.elasticsearch.cluster.service.ClusterService;
@@ -22,7 +23,6 @@
 import org.elasticsearch.transport.TransportService;
 import org.elasticsearch.xpack.core.ClientHelper;
 import org.elasticsearch.xpack.migrate.action.ReindexDataStreamAction.ReindexDataStreamRequest;
-import org.elasticsearch.xpack.migrate.action.ReindexDataStreamAction.ReindexDataStreamResponse;
 import org.elasticsearch.xpack.migrate.task.ReindexDataStreamTask;
 import org.elasticsearch.xpack.migrate.task.ReindexDataStreamTaskParams;
 
@@ -33,7 +33,7 @@
  * This transport action creates a new persistent task for reindexing the source data stream given in the request. On successful creation
  *  of the persistent task, it responds with the persistent task id so that the user can monitor the persistent task.
  */
-public class ReindexDataStreamTransportAction extends HandledTransportAction<ReindexDataStreamRequest, ReindexDataStreamResponse> {
+public class ReindexDataStreamTransportAction extends HandledTransportAction<ReindexDataStreamRequest, AcknowledgedResponse> {
     private final PersistentTasksService persistentTasksService;
     private final TransportService transportService;
     private final ClusterService clusterService;
@@ -59,7 +59,7 @@ public ReindexDataStreamTransportAction(
     }
 
     @Override
-    protected void doExecute(Task task, ReindexDataStreamRequest request, ActionListener<ReindexDataStreamResponse> listener) {
+    protected void doExecute(Task task, ReindexDataStreamRequest request, ActionListener<AcknowledgedResponse> listener) {
         String sourceDataStreamName = request.getSourceDataStream();
         Metadata metadata = clusterService.state().metadata();
         DataStream dataStream = metadata.dataStreams().get(sourceDataStreamName);
@@ -82,7 +82,7 @@ protected void doExecute(Task task, ReindexDataStreamRequest request, ActionList
             ReindexDataStreamTask.TASK_NAME,
             params,
             null,
-            ActionListener.wrap(startedTask -> listener.onResponse(new ReindexDataStreamResponse(persistentTaskId)), listener::onFailure)
+            ActionListener.wrap(startedTask -> listener.onResponse(AcknowledgedResponse.TRUE), listener::onFailure)
         );
     }
 

x-pack/plugin/migrate/src/main/java/org/elasticsearch/xpack/migrate/rest/RestMigrationReindexAction.java

@@ -7,6 +7,7 @@
 
 package org.elasticsearch.xpack.migrate.rest;
 
+import org.elasticsearch.action.support.master.AcknowledgedResponse;
 import org.elasticsearch.client.internal.node.NodeClient;
 import org.elasticsearch.rest.BaseRestHandler;
 import org.elasticsearch.rest.RestChannel;
@@ -17,7 +18,6 @@
 import org.elasticsearch.xcontent.XContentBuilder;
 import org.elasticsearch.xcontent.XContentParser;
 import org.elasticsearch.xpack.migrate.action.ReindexDataStreamAction;
-import org.elasticsearch.xpack.migrate.action.ReindexDataStreamAction.ReindexDataStreamResponse;
 
 import java.io.IOException;
 import java.util.Collections;
@@ -63,14 +63,14 @@ public Set<String> supportedCapabilities() {
         return Collections.unmodifiableSet(capabilities);
     }
 
-    static class ReindexDataStreamRestToXContentListener extends RestBuilderListener<ReindexDataStreamResponse> {
+    static class ReindexDataStreamRestToXContentListener extends RestBuilderListener<AcknowledgedResponse> {
 
         ReindexDataStreamRestToXContentListener(RestChannel channel) {
             super(channel);
         }
 
         @Override
-        public RestResponse buildResponse(ReindexDataStreamResponse response, XContentBuilder builder) throws Exception {
+        public RestResponse buildResponse(AcknowledgedResponse response, XContentBuilder builder) throws Exception {
             response.toXContent(builder, channel.request());
             return new RestResponse(RestStatus.OK, builder);
         }