Add support for data stream APIs in transport client.

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/XPackClient.java

@@ -17,6 +17,7 @@
 import org.elasticsearch.xpack.core.action.XPackInfoAction;
 import org.elasticsearch.xpack.core.action.XPackInfoRequestBuilder;
 import org.elasticsearch.xpack.core.ccr.client.CcrClient;
+import org.elasticsearch.xpack.core.datastreams.DataStreamClient;
 import org.elasticsearch.xpack.core.enrich.client.EnrichClient;
 import org.elasticsearch.xpack.core.frozen.action.FreezeIndexAction;
 import org.elasticsearch.xpack.core.ilm.client.ILMClient;
@@ -45,6 +46,7 @@ public class XPackClient {
     private final MachineLearningClient machineLearning;
     private final ILMClient ilmClient;
     private final EnrichClient enrichClient;
+    private final DataStreamClient dataStreamClient;
 
     public XPackClient(Client client) {
         this.client = Objects.requireNonNull(client, "client");
@@ -56,6 +58,7 @@ public XPackClient(Client client) {
         this.machineLearning = new MachineLearningClient(client);
         this.ilmClient = new ILMClient(client);
         this.enrichClient = new EnrichClient(client);
+        this.dataStreamClient = new DataStreamClient(client);
     }
 
     public Client es() {
@@ -94,6 +97,10 @@ public EnrichClient enrichClient() {
         return enrichClient;
     }
 
+    public DataStreamClient dataStreamClient() {
+        return dataStreamClient;
+    }
+
     public XPackClient withHeaders(Map<String, String> headers) {
         return new XPackClient(client.filterWithHeader(headers));
     }

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/XPackClientPlugin.java

@@ -38,6 +38,10 @@
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.transport.SharedGroupFactory;
 import org.elasticsearch.transport.Transport;
+import org.elasticsearch.xpack.core.action.CreateDataStreamAction;
+import org.elasticsearch.xpack.core.action.DataStreamsStatsAction;
+import org.elasticsearch.xpack.core.action.DeleteDataStreamAction;
+import org.elasticsearch.xpack.core.action.GetDataStreamAction;
 import org.elasticsearch.xpack.core.action.XPackInfoAction;
 import org.elasticsearch.xpack.core.action.XPackUsageAction;
 import org.elasticsearch.xpack.core.analytics.AnalyticsFeatureSetUsage;
@@ -489,7 +493,12 @@ public List<ActionType<? extends ActionResponse>> getClientActions() {
                 DeleteAsyncResultAction.INSTANCE,
                 // Point in time
                 OpenPointInTimeAction.INSTANCE,
-                ClosePointInTimeAction.INSTANCE
+                ClosePointInTimeAction.INSTANCE,
+                // Data streams,
+                CreateDataStreamAction.INSTANCE,
+                GetDataStreamAction.INSTANCE,
+                DeleteDataStreamAction.INSTANCE,
+                DataStreamsStatsAction.INSTANCE
         );
     }
 

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/datastreams/DataStreamClient.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+package org.elasticsearch.xpack.core.datastreams;
+
+import org.elasticsearch.action.ActionFuture;
+import org.elasticsearch.action.ActionListener;
+import org.elasticsearch.action.support.PlainActionFuture;
+import org.elasticsearch.action.support.master.AcknowledgedResponse;
+import org.elasticsearch.client.ElasticsearchClient;
+import org.elasticsearch.xpack.core.action.CreateDataStreamAction;
+import org.elasticsearch.xpack.core.action.DataStreamsStatsAction;
+import org.elasticsearch.xpack.core.action.DeleteDataStreamAction;
+import org.elasticsearch.xpack.core.action.GetDataStreamAction;
+
+import java.util.Objects;
+
+public class DataStreamClient {
+
+    private final ElasticsearchClient client;
+
+    public DataStreamClient(ElasticsearchClient client) {
+        this.client = Objects.requireNonNull(client);
+    }
+
+    public void createDataStream(CreateDataStreamAction.Request request, ActionListener<AcknowledgedResponse> listener) {
+        client.execute(CreateDataStreamAction.INSTANCE, request, listener);
+    }
+
+    public ActionFuture<AcknowledgedResponse> createDataStream(CreateDataStreamAction.Request request) {
+        final PlainActionFuture<AcknowledgedResponse> listener = PlainActionFuture.newFuture();
+        client.execute(CreateDataStreamAction.INSTANCE, request, listener);
+        return listener;
+    }
+
+    public void getDataStream(GetDataStreamAction.Request request, ActionListener<GetDataStreamAction.Response> listener) {
+        client.execute(GetDataStreamAction.INSTANCE, request, listener);
+    }
+
+    public ActionFuture<GetDataStreamAction.Response> getDataStream(GetDataStreamAction.Request request) {
+        final PlainActionFuture<GetDataStreamAction.Response> listener = PlainActionFuture.newFuture();
+        client.execute(GetDataStreamAction.INSTANCE, request, listener);
+        return listener;
+    }
+
+    public void deleteDataStream(DeleteDataStreamAction.Request request, ActionListener<AcknowledgedResponse> listener) {
+        client.execute(DeleteDataStreamAction.INSTANCE, request, listener);
+    }
+
+    public ActionFuture<AcknowledgedResponse> deleteDataStream(DeleteDataStreamAction.Request request) {
+        final PlainActionFuture<AcknowledgedResponse> listener = PlainActionFuture.newFuture();
+        client.execute(DeleteDataStreamAction.INSTANCE, request, listener);
+        return listener;
+    }
+
+    public void dataStreamsStats(DataStreamsStatsAction.Request request, ActionListener<DataStreamsStatsAction.Response> listener) {
+        client.execute(DataStreamsStatsAction.INSTANCE, request, listener);
+    }
+
+    public ActionFuture<DataStreamsStatsAction.Response> dataStreamsStats(DataStreamsStatsAction.Request request) {
+        final PlainActionFuture<DataStreamsStatsAction.Response> listener = PlainActionFuture.newFuture();
+        client.execute(DataStreamsStatsAction.INSTANCE, request, listener);
+        return listener;
+    }
+}

x-pack/qa/transport-client-tests/src/test/java/org/elasticsearch/xpack/DataStreamTransportClientIT.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+package org.elasticsearch.xpack;
+
+import org.elasticsearch.client.Client;
+import org.elasticsearch.xpack.core.XPackClient;
+import org.elasticsearch.xpack.core.action.CreateDataStreamAction;
+import org.elasticsearch.xpack.core.action.DataStreamsStatsAction;
+import org.elasticsearch.xpack.core.action.DeleteDataStreamAction;
+import org.elasticsearch.xpack.core.action.GetDataStreamAction;
+import org.elasticsearch.xpack.core.datastreams.DataStreamClient;
+
+import static org.hamcrest.Matchers.equalTo;
+
+public class DataStreamTransportClientIT extends ESXPackSmokeClientTestCase {
+
+    public void testTransportClientUsage() {
+        Client client = getClient();
+        XPackClient xPackClient = new XPackClient(client);
+        DataStreamClient dataStreamClient = xPackClient.dataStreamClient();
+
+        dataStreamClient.createDataStream(new CreateDataStreamAction.Request("logs-http-eu1")).actionGet();
+
+        GetDataStreamAction.Request getDataStreamRequest = new GetDataStreamAction.Request(new String[]{"logs-http-eu1"});
+        GetDataStreamAction.Response response = dataStreamClient.getDataStream(getDataStreamRequest).actionGet();
+        assertThat(response.getDataStreams().size(), equalTo(1));
+        assertThat(response.getDataStreams().get(0).getDataStream().getName(), equalTo("logs-http-eu1"));
+
+        DataStreamsStatsAction.Response dataStreamStatsResponse =
+            dataStreamClient.dataStreamsStats(new DataStreamsStatsAction.Request()).actionGet();
+        assertThat(dataStreamStatsResponse.getDataStreamCount(), equalTo(1));
+
+        DeleteDataStreamAction.Request deleteDataStreamRequest = new DeleteDataStreamAction.Request(new String[]{"logs-http-eu1"});
+        dataStreamClient.deleteDataStream(deleteDataStreamRequest).actionGet();
+    }
+
+}