Add global ccr stats endpoint and tidy up implemented ccr api's thus far

Author: Mpdreamz

src/Nest/XPack/CrossClusterReplication/Follow/FollowIndexStats/FollowIndexStatsRequest.cs

@@ -3,30 +3,17 @@
 
 namespace Nest
 {
+	/// <summary>
+	/// This API gets follower stats. This API will return shard-level stats about the following tasks
+	/// associated with each shard for the specified indices.
+	/// </summary>
 	[MapsApi("ccr.follow_stats.json")]
 	[ContractJsonConverter(typeof(ReadAsTypeJsonConverter<FollowIndexStatsRequest>))]
-	public partial interface IFollowIndexStatsRequest
-	{
-		/// <summary>
-		///
-		/// <para>
-		/// </para>
-		/// </summary>
-		[JsonProperty("cursor")]
-		string Cursor { get; set; }
-	}
+	public partial interface IFollowIndexStatsRequest { }
 
-	public partial class FollowIndexStatsRequest
-	{
-		/// <inheritdoc cref="IFollowIndexStatsRequest.Cursor" />
-		public string Cursor { get; set; }
-	}
+	/// <inheritdoc cref="IFollowIndexStatsRequest"/>
+	public partial class FollowIndexStatsRequest { }
 
-	public partial class FollowIndexStatsDescriptor
-	{
-		string IFollowIndexStatsRequest.Cursor { get; set; }
-
-		/// <inheritdoc cref="IFollowIndexStatsRequest.Cursor" />
-		public FollowIndexStatsDescriptor Cursor(string cursor) => Assign(a => a.Cursor = cursor);
-	}
+	/// <inheritdoc cref="IFollowIndexStatsRequest"/>
+	public partial class FollowIndexStatsDescriptor { }
 }

src/Nest/XPack/CrossClusterReplication/Follow/PauseFollowIndex/ElasticClient-PauseFollowIndex.cs

@@ -7,7 +7,11 @@ namespace Nest
 {
 	public partial interface IElasticClient
 	{
-		/// <summary></summary>
+		/// <summary>
+		/// This API pauses a follower index. When this API returns, the follower index will not fetch any additional operations from
+		/// the leader index. You can resume following with the resume follower API. Pausing and resuming a follower index can be
+		/// used to change the configuration of the following task.
+		/// </summary>
 		IPauseFollowIndexResponse PauseFollowIndex(IndexName index, Func<PauseFollowIndexDescriptor, IPauseFollowIndexRequest> selector = null);
 
 		/// <inheritdoc cref="PauseFollowIndex(IndexName, System.Func{Nest.PauseFollowIndexDescriptor,Nest.IPauseFollowIndexRequest})" />

src/Nest/XPack/CrossClusterReplication/Follow/PauseFollowIndex/PauseFollowIndexRequest.cs

@@ -3,30 +3,18 @@
 
 namespace Nest
 {
+	/// <summary>
+	/// This API pauses a follower index. When this API returns, the follower index will not fetch any additional operations from
+	/// the leader index. You can resume following with the resume follower API. Pausing and resuming a follower index can be
+	/// used to change the configuration of the following task.
+	/// </summary>
 	[MapsApi("ccr.pause_follow.json")]
 	[ContractJsonConverter(typeof(ReadAsTypeJsonConverter<PauseFollowIndexRequest>))]
-	public partial interface IPauseFollowIndexRequest
-	{
-		/// <summary>
-		///
-		/// <para>
-		/// </para>
-		/// </summary>
-		[JsonProperty("cursor")]
-		string Cursor { get; set; }
-	}
+	public partial interface IPauseFollowIndexRequest { }
 
-	public partial class PauseFollowIndexRequest
-	{
-		/// <inheritdoc cref="IPauseFollowIndexRequest.Cursor" />
-		public string Cursor { get; set; }
-	}
+	/// <inheritdoc cref="IPauseFollowIndexRequest"/>
+	public partial class PauseFollowIndexRequest { }
 
-	public partial class PauseFollowIndexDescriptor
-	{
-		string IPauseFollowIndexRequest.Cursor { get; set; }
-
-		/// <inheritdoc cref="IPauseFollowIndexRequest.Cursor" />
-		public PauseFollowIndexDescriptor Cursor(string cursor) => Assign(a => a.Cursor = cursor);
-	}
+	/// <inheritdoc cref="IPauseFollowIndexRequest"/>
+	public partial class PauseFollowIndexDescriptor { }
 }

src/Nest/XPack/CrossClusterReplication/Follow/ResumeFollowIndex/ElasticClient-ResumeFollowIndex.cs

@@ -7,7 +7,11 @@ namespace Nest
 {
 	public partial interface IElasticClient
 	{
-		/// <summary></summary>
+		/// <summary>
+		/// This API resumes a follower index that has been paused either explicitly with the pause follower API or
+		/// implicitly due to execution that can not be retried due to failure during following. When this API returns,
+		/// the follower index will resume fetching operations from the leader index.
+		/// </summary>
 		IResumeFollowIndexResponse ResumeFollowIndex(IndexName index, Func<ResumeFollowIndexDescriptor, IResumeFollowIndexRequest> selector = null);
 
 		/// <inheritdoc cref="ResumeFollowIndex(IndexName, System.Func{Nest.ResumeFollowIndexDescriptor,Nest.IResumeFollowIndexRequest})" />

src/Nest/XPack/CrossClusterReplication/Follow/ResumeFollowIndex/ResumeFollowIndexRequest.cs

@@ -3,6 +3,11 @@
 
 namespace Nest
 {
+	/// <summary>
+	/// This API resumes a follower index that has been paused either explicitly with the pause follower API or
+	/// implicitly due to execution that can not be retried due to failure during following. When this API returns,
+	/// the follower index will resume fetching operations from the leader index.
+	/// </summary>
 	[MapsApi("ccr.resume_follow.json")]
 	[ContractJsonConverter(typeof(ReadAsTypeJsonConverter<ResumeFollowIndexRequest>))]
 	public partial interface IResumeFollowIndexRequest
@@ -38,6 +43,7 @@ public partial interface IResumeFollowIndexRequest
 		Time ReadPollTimeout { get; set; }
 	}
 
+	/// <inheritdoc cref="IResumeFollowIndexRequest"/>
 	public partial class ResumeFollowIndexRequest
 	{
 		/// <inheritdoc cref="ICreateFollowIndexRequest.MaxReadRequestOperationCount"/>
@@ -72,6 +78,7 @@ public partial class ResumeFollowIndexRequest
 
 	}
 
+	/// <inheritdoc cref="IResumeFollowIndexRequest"/>
 	public partial class ResumeFollowIndexDescriptor
 	{
 		long? IResumeFollowIndexRequest.MaxReadRequestOperationCount { get; set; }

src/Nest/XPack/CrossClusterReplication/Follow/UnfollowIndex/UnfollowIndexRequest.cs

@@ -3,30 +3,18 @@
 
 namespace Nest
 {
+	/// <summary>
+	/// This API stops the following task associated with a follower index and removes index metadata and settings associated with
+	/// cross-cluster replication. This enables the index to treated as a regular index. The follower index must be paused and closed
+	/// before invoking the unfollow API.
+	/// </summary>
 	[MapsApi("ccr.unfollow.json")]
 	[ContractJsonConverter(typeof(ReadAsTypeJsonConverter<UnfollowIndexRequest>))]
-	public partial interface IUnfollowIndexRequest
-	{
-		/// <summary>
-		///
-		/// <para>
-		/// </para>
-		/// </summary>
-		[JsonProperty("cursor")]
-		string Cursor { get; set; }
-	}
+	public partial interface IUnfollowIndexRequest { }
 
-	public partial class UnfollowIndexRequest
-	{
-		/// <inheritdoc cref="IUnfollowIndexRequest.Cursor" />
-		public string Cursor { get; set; }
-	}
+	/// <inheritdoc cref="IUnfollowIndexRequest"/>
+	public partial class UnfollowIndexRequest { }
 
-	public partial class UnfollowIndexDescriptor
-	{
-		string IUnfollowIndexRequest.Cursor { get; set; }
-
-		/// <inheritdoc cref="IUnfollowIndexRequest.Cursor" />
-		public UnfollowIndexDescriptor Cursor(string cursor) => Assign(a => a.Cursor = cursor);
-	}
+	/// <inheritdoc cref="IUnfollowIndexRequest"/>
+	public partial class UnfollowIndexDescriptor { }
 }

src/Nest/XPack/CrossClusterReplication/Follow/UnfollowIndex/UnfollowIndexResponse.cs

@@ -2,7 +2,5 @@
 {
 	public interface IUnfollowIndexResponse : IAcknowledgedResponse { }
 
-	public class UnfollowIndexResponse : AcknowledgedResponseBase, IUnfollowIndexResponse
-	{
-	}
+	public class UnfollowIndexResponse : AcknowledgedResponseBase, IUnfollowIndexResponse { }
 }

src/Nest/XPack/CrossClusterReplication/Stats/CcrStatsRequest.cs

@@ -3,30 +3,18 @@
 
 namespace Nest
 {
+	/// <summary>
+	/// This API gets cross-cluster replication stats. This API will return all stats related to cross-cluster replication.
+	/// In particular, this API returns stats about auto-following, and returns the same shard-level stats as in the get
+	/// follower stats API. <see cref="IElasticClient.FollowIndexStats(Nest.Indices,System.Func{Nest.FollowIndexStatsDescriptor,Nest.IFollowIndexStatsRequest})"/>
+	/// </summary>
 	[MapsApi("ccr.stats.json")]
 	[ContractJsonConverter(typeof(ReadAsTypeJsonConverter<CcrStatsRequest>))]
-	public partial interface ICcrStatsRequest
-	{
-		/// <summary>
-		///
-		/// <para>
-		/// </para>
-		/// </summary>
-		[JsonProperty("cursor")]
-		string Cursor { get; set; }
-	}
+	public partial interface ICcrStatsRequest { }
 
-	public partial class CcrStatsRequest
-	{
-		/// <inheritdoc cref="ICcrStatsRequest.Cursor" />
-		public string Cursor { get; set; }
-	}
+	/// <inheritdoc cref="ICcrStatsRequest"/>
+	public partial class CcrStatsRequest { }
 
-	public partial class CcrStatsDescriptor
-	{
-		string ICcrStatsRequest.Cursor { get; set; }
-
-		/// <inheritdoc cref="ICcrStatsRequest.Cursor" />
-		public CcrStatsDescriptor Cursor(string cursor) => Assign(a => a.Cursor = cursor);
-	}
+	/// <inheritdoc cref="ICcrStatsRequest"/>
+	public partial class CcrStatsDescriptor { }
 }

src/Nest/XPack/CrossClusterReplication/Stats/CcrStatsResponse.cs

@@ -1,20 +1,59 @@
 using System.Collections.Generic;
+using Elasticsearch.Net;
 using Newtonsoft.Json;
 
 namespace Nest
 {
 	public interface ICcrStatsResponse : IResponse
 	{
-		/// <summary>
-		///
-		/// </summary>
-		[JsonProperty("columns")]
-		IReadOnlyCollection<SqlColumn> Columns { get; }
+		[JsonProperty("auto_follow_stats")]
+		CcrAutoFollowStats AutoFollowStats { get; }
+
+		[JsonProperty("follow_stats")]
+		CcrFollowStats FollowStats { get; }
 	}
 
 	public class CcrStatsResponse : ResponseBase, ICcrStatsResponse
 	{
-		/// <inheritdoc cref="ICcrStatsResponse.Columns" />
-		public IReadOnlyCollection<SqlColumn> Columns { get; internal set; } = EmptyReadOnly<SqlColumn>.Collection;
+		/// <inheritdoc cref="ICcrStatsResponse.AutoFollowStats"/>
+		public CcrAutoFollowStats AutoFollowStats { get; internal set; }
+
+		/// <inheritdoc cref="ICcrStatsResponse.FollowStats"/>
+		public CcrFollowStats FollowStats { get; internal set; }
+	}
+
+
+	public class CcrFollowStats
+	{
+		/// <inheritdoc cref="IFollowIndexStatsResponse.Indices" />
+		[JsonProperty("indices")]
+		public IReadOnlyCollection<FollowIndexStats> Indices { get; internal set; } = EmptyReadOnly<FollowIndexStats>.Collection;
+	}
+
+	public class CcrAutoFollowStats
+	{
+
+		/// <summary>
+		/// the number of indices that the auto-follow coordinator failed to automatically follow; the causes of recent failures are
+		/// captured in the logs of the elected master node, and in the auto_follow_stats.recent_auto_follow_errors field
+		/// </summary>
+		[JsonProperty("number_of_failed_follow_indices")]
+		public long NumberOfFailedFollowIndices { get; internal set; }
+
+		/// <summary>
+		/// the number of times that the auto-follow coordinator failed to retrieve the cluster state from a
+		/// remote cluster registered in a collection of auto-follow patterns
+		/// </summary>
+		[JsonProperty("number_of_failed_remote_cluster_state_requests")]
+		public long NumberOfFailedRemoteClusterStateRequests { get; internal set; }
+
+		/// <summary> the number of indices that the auto-follow coordinator successfully followed </summary>
+		[JsonProperty("number_of_successful_follow_indices")]
+		public long NumberOfSuccessfulFollowIndices { get; internal set; }
+
+		/// <summary> an array of objects representing failures by the auto-follow coordinator </summary>
+		[JsonProperty("recent_auto_follow_errors")]
+		public IReadOnlyCollection<ErrorCause> RecentAutoFollowErrors { get; internal set; } = EmptyReadOnly<ErrorCause>.Collection;
+
 	}
 }

src/Nest/XPack/CrossClusterReplication/Stats/ElasticClient-CcrStats.cs

@@ -7,7 +7,11 @@ namespace Nest
 {
 	public partial interface IElasticClient
 	{
-		/// <summary></summary>
+		/// <summary>
+		/// This API gets cross-cluster replication stats. This API will return all stats related to cross-cluster replication.
+		/// In particular, this API returns stats about auto-following, and returns the same shard-level stats as in the get
+		/// follower stats API. <see cref="IElasticClient.FollowIndexStats(Nest.Indices,System.Func{Nest.FollowIndexStatsDescriptor,Nest.IFollowIndexStatsRequest})"/>
+		/// </summary>
 		ICcrStatsResponse CcrStats(Func<CcrStatsDescriptor, ICcrStatsRequest> selector = null);
 
 		/// <inheritdoc cref="CcrStats(System.Func{Nest.CcrStatsDescriptor,Nest.ICcrStatsRequest})" />