[Backport master] Add promote data stream API to NEST

src/Nest/Descriptors.Indices.cs

@@ -1030,6 +1030,29 @@ public OpenIndexDescriptor Index<TOther>()
 		public OpenIndexDescriptor WaitForActiveShards(string waitforactiveshards) => Qs("wait_for_active_shards", waitforactiveshards);
 	}
 
+	///<summary>Descriptor for PromoteDataStream <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html</para></summary>
+	public partial class PromoteDataStreamDescriptor : RequestDescriptorBase<PromoteDataStreamDescriptor, PromoteDataStreamRequestParameters, IPromoteDataStreamRequest>, IPromoteDataStreamRequest
+	{
+		internal override ApiUrls ApiUrls => ApiUrlsLookups.IndicesPromoteDataStream;
+		protected override HttpMethod HttpMethod => HttpMethod.POST;
+		protected override bool SupportsBody => false;
+		///<summary>/_data_stream/_promote/{name}</summary>
+		///<param name = "name">this parameter is required</param>
+		public PromoteDataStreamDescriptor(Name name): base(r => r.Required("name", name))
+		{
+		}
+
+		///<summary>Used for serialization purposes, making sure we have a parameterless constructor</summary>
+		[SerializationConstructor]
+		protected PromoteDataStreamDescriptor(): base()
+		{
+		}
+
+		// values part of the url path
+		Name IPromoteDataStreamRequest.Name => Self.RouteValues.Get<Name>("name");
+	// Request parameters
+	}
+
 	///<summary>Descriptor for PutAlias <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/indices-aliases.html</para></summary>
 	public partial class PutAliasDescriptor : RequestDescriptorBase<PutAliasDescriptor, PutAliasRequestParameters, IPutAliasRequest>, IPutAliasRequest
 	{

src/Nest/ElasticClient.Indices.cs

@@ -684,6 +684,30 @@ public Task<GetMappingResponse> GetMappingAsync<TDocument>(Func<GetMappingDescri
 		/// </summary>
 		public Task<OpenIndexResponse> OpenAsync(IOpenIndexRequest request, CancellationToken ct = default) => DoRequestAsync<IOpenIndexRequest, OpenIndexResponse>(request, request.RequestParameters, ct);
 		/// <summary>
+		/// <c>POST</c> request to the <c>indices.promote_data_stream</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html</a>
+		/// </summary>
+		public PromoteDataStreamResponse PromoteDataStream(Name name, Func<PromoteDataStreamDescriptor, IPromoteDataStreamRequest> selector = null) => PromoteDataStream(selector.InvokeOrDefault(new PromoteDataStreamDescriptor(name: name)));
+		/// <summary>
+		/// <c>POST</c> request to the <c>indices.promote_data_stream</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html</a>
+		/// </summary>
+		public Task<PromoteDataStreamResponse> PromoteDataStreamAsync(Name name, Func<PromoteDataStreamDescriptor, IPromoteDataStreamRequest> selector = null, CancellationToken ct = default) => PromoteDataStreamAsync(selector.InvokeOrDefault(new PromoteDataStreamDescriptor(name: name)), ct);
+		/// <summary>
+		/// <c>POST</c> request to the <c>indices.promote_data_stream</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html</a>
+		/// </summary>
+		public PromoteDataStreamResponse PromoteDataStream(IPromoteDataStreamRequest request) => DoRequest<IPromoteDataStreamRequest, PromoteDataStreamResponse>(request, request.RequestParameters);
+		/// <summary>
+		/// <c>POST</c> request to the <c>indices.promote_data_stream</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html</a>
+		/// </summary>
+		public Task<PromoteDataStreamResponse> PromoteDataStreamAsync(IPromoteDataStreamRequest request, CancellationToken ct = default) => DoRequestAsync<IPromoteDataStreamRequest, PromoteDataStreamResponse>(request, request.RequestParameters, ct);
+		/// <summary>
 		/// <c>PUT</c> request to the <c>indices.put_alias</c> API, read more about this API online:
 		/// <para></para>
 		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/indices-aliases.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/indices-aliases.html</a>

src/Nest/Requests.Indices.cs

@@ -1784,6 +1784,41 @@ public string WaitForActiveShards
 		}
 	}
 
+	[InterfaceDataContract]
+	public partial interface IPromoteDataStreamRequest : IRequest<PromoteDataStreamRequestParameters>
+	{
+		[IgnoreDataMember]
+		Name Name
+		{
+			get;
+		}
+	}
+
+	///<summary>Request for PromoteDataStream <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/data-streams.html</para></summary>
+	public partial class PromoteDataStreamRequest : PlainRequestBase<PromoteDataStreamRequestParameters>, IPromoteDataStreamRequest
+	{
+		protected IPromoteDataStreamRequest Self => this;
+		internal override ApiUrls ApiUrls => ApiUrlsLookups.IndicesPromoteDataStream;
+		protected override HttpMethod HttpMethod => HttpMethod.POST;
+		protected override bool SupportsBody => false;
+		///<summary>/_data_stream/_promote/{name}</summary>
+		///<param name = "name">this parameter is required</param>
+		public PromoteDataStreamRequest(Name name): base(r => r.Required("name", name))
+		{
+		}
+
+		///<summary>Used for serialization purposes, making sure we have a parameterless constructor</summary>
+		[SerializationConstructor]
+		protected PromoteDataStreamRequest(): base()
+		{
+		}
+
+		// values part of the url path
+		[IgnoreDataMember]
+		Name IPromoteDataStreamRequest.Name => Self.RouteValues.Get<Name>("name");
+	// Request parameters
+	}
+
 	[InterfaceDataContract]
 	public partial interface IPutAliasRequest : IRequest<PutAliasRequestParameters>
 	{

src/Nest/XPack/DataStreams/Promote/PromoteDataStreamRequest.cs

@@ -0,0 +1,40 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+namespace Nest
+{
+	/// <summary>
+	/// The purpose of the promote data stream api is to turn a data stream that is replicated by CCR into a regular data stream.
+	/// </summary>
+	[MapsApi("indices.promote_data_stream.json")]
+	[ReadAs(typeof(PromoteDataStreamRequest))]
+	public partial interface IPromoteDataStreamRequest
+	{
+	}
+
+	/// <inheritdoc cref="IPromoteDataStreamRequest"/>
+	public partial class PromoteDataStreamRequest : IPromoteDataStreamRequest
+	{
+	}
+
+	/// <inheritdoc cref="IPromoteDataStreamRequest"/>
+	public partial class PromoteDataStreamDescriptor
+	{
+	}
+}

src/Nest/XPack/DataStreams/Promote/PromoteDataStreamResponse.cs

@@ -0,0 +1,23 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+ namespace Nest
+{
+	public class PromoteDataStreamResponse : AcknowledgedResponseBase { }
+}

src/Nest/_Generated/ApiUrlsLookup.generated.cs

@@ -151,6 +151,7 @@ internal static class ApiUrlsLookups
 		internal static ApiUrls IndicesGetSettings = new ApiUrls(new[]{"_settings", "{index}/_settings", "{index}/_settings/{name}", "_settings/{name}"});
 		internal static ApiUrls IndicesGetTemplate = new ApiUrls(new[]{"_template", "_template/{name}"});
 		internal static ApiUrls IndicesOpen = new ApiUrls(new[]{"{index}/_open"});
+		internal static ApiUrls IndicesPromoteDataStream = new ApiUrls(new[]{"_data_stream/_promote/{name}"});
 		internal static ApiUrls IndicesPutAlias = new ApiUrls(new[]{"{index}/_alias/{name}"});
 		internal static ApiUrls IndicesPutMapping = new ApiUrls(new[]{"{index}/_mapping"});
 		internal static ApiUrls IndicesUpdateSettings = new ApiUrls(new[]{"_settings", "{index}/_settings"});

tests/Tests/XPack/DataStreams/Promote/PromoteDataStreamUrlTests.cs

@@ -0,0 +1,36 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+using System.Threading.Tasks;
+using Elastic.Elasticsearch.Xunit.XunitPlumbing;
+using Nest;
+using Tests.Framework.EndpointTests;
+using static Tests.Framework.EndpointTests.UrlTester;
+
+namespace Tests.XPack.DataStreams.Promote
+{
+	public class PromoteDataStreamUrlTests : UrlTestsBase
+	{
+		[U] public override async Task Urls() => await POST("/_data_stream/_promote/stream")
+			.Fluent(c => c.Indices.PromoteDataStream("stream", f => f))
+			.Request(c => c.Indices.PromoteDataStream(new PromoteDataStreamRequest("stream")))
+			.FluentAsync(c => c.Indices.PromoteDataStreamAsync("stream", f => f))
+			.RequestAsync(c => c.Indices.PromoteDataStreamAsync(new PromoteDataStreamRequest("stream")));
+	}
+}