Implement Get SLM Stats API

src/CodeGeneration/ApiGenerator/Configuration/CodeConfiguration.cs

@@ -61,7 +61,6 @@ public static class CodeConfiguration
 			"enrich.put_policy.json",
 			"enrich.stats.json",
 			"slm.execute_retention.json",
-			"slm.get_stats.json",
 			"transform.delete_transform.json",
 			"transform.get_transform.json",
 			"transform.get_transform_stats.json",

src/Elasticsearch.Net/Api/RequestParameters/RequestParameters.SnapshotLifecycleManagement.cs

@@ -42,6 +42,12 @@ public class GetSnapshotLifecycleRequestParameters : RequestParameters<GetSnapsh
 		public override HttpMethod DefaultHttpMethod => HttpMethod.GET;
 	}
 
+	///<summary>Request options for GetSnapshotLifecycleStats <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</para></summary>
+	public class GetSnapshotLifecycleStatsRequestParameters : RequestParameters<GetSnapshotLifecycleStatsRequestParameters>
+	{
+		public override HttpMethod DefaultHttpMethod => HttpMethod.GET;
+	}
+
 	///<summary>Request options for PutSnapshotLifecycle <para>https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put.html</para></summary>
 	public class PutSnapshotLifecycleRequestParameters : RequestParameters<PutSnapshotLifecycleRequestParameters>
 	{

src/Elasticsearch.Net/ElasticLowLevelClient.SnapshotLifecycleManagement.cs

@@ -85,6 +85,15 @@ public TResponse GetSnapshotLifecycle<TResponse>(GetSnapshotLifecycleRequestPara
 		[MapsApi("slm.get_lifecycle", "")]
 		public Task<TResponse> GetSnapshotLifecycleAsync<TResponse>(GetSnapshotLifecycleRequestParameters requestParameters = null, CancellationToken ctx = default)
 			where TResponse : class, IElasticsearchResponse, new() => DoRequestAsync<TResponse>(GET, "_slm/policy", ctx, null, RequestParams(requestParameters));
+		///<summary>GET on /_slm/stats <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</para></summary>
+		///<param name = "requestParameters">Request specific configuration such as querystring parameters &amp; request specific connection settings.</param>
+		public TResponse GetSnapshotLifecycleStats<TResponse>(GetSnapshotLifecycleStatsRequestParameters requestParameters = null)
+			where TResponse : class, IElasticsearchResponse, new() => DoRequest<TResponse>(GET, "_slm/stats", null, RequestParams(requestParameters));
+		///<summary>GET on /_slm/stats <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</para></summary>
+		///<param name = "requestParameters">Request specific configuration such as querystring parameters &amp; request specific connection settings.</param>
+		[MapsApi("slm.get_stats", "")]
+		public Task<TResponse> GetSnapshotLifecycleStatsAsync<TResponse>(GetSnapshotLifecycleStatsRequestParameters requestParameters = null, CancellationToken ctx = default)
+			where TResponse : class, IElasticsearchResponse, new() => DoRequestAsync<TResponse>(GET, "_slm/stats", ctx, null, RequestParams(requestParameters));
 		///<summary>PUT on /_slm/policy/{policy_id} <para>https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put.html</para></summary>
 		///<param name = "policyId">The id of the snapshot lifecycle policy</param>
 		///<param name = "body">The snapshot lifecycle policy definition to register</param>

src/Nest/Descriptors.SnapshotLifecycleManagement.cs

@@ -94,6 +94,14 @@ public GetSnapshotLifecycleDescriptor(): base()
 	// Request parameters
 	}
 
+	///<summary>Descriptor for GetSnapshotLifecycleStats <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</para></summary>
+	public partial class GetSnapshotLifecycleStatsDescriptor : RequestDescriptorBase<GetSnapshotLifecycleStatsDescriptor, GetSnapshotLifecycleStatsRequestParameters, IGetSnapshotLifecycleStatsRequest>, IGetSnapshotLifecycleStatsRequest
+	{
+		internal override ApiUrls ApiUrls => ApiUrlsLookups.SnapshotLifecycleManagementGetSnapshotLifecycleStats;
+	// values part of the url path
+	// Request parameters
+	}
+
 	///<summary>Descriptor for PutSnapshotLifecycle <para>https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put.html</para></summary>
 	public partial class PutSnapshotLifecycleDescriptor : RequestDescriptorBase<PutSnapshotLifecycleDescriptor, PutSnapshotLifecycleRequestParameters, IPutSnapshotLifecycleRequest>, IPutSnapshotLifecycleRequest
 	{

src/Nest/ElasticClient.SnapshotLifecycleManagement.cs

@@ -109,6 +109,30 @@ internal SnapshotLifecycleManagementNamespace(ElasticClient client): base(client
 		/// </summary>
 		public Task<GetSnapshotLifecycleResponse> GetSnapshotLifecycleAsync(IGetSnapshotLifecycleRequest request, CancellationToken ct = default) => DoRequestAsync<IGetSnapshotLifecycleRequest, GetSnapshotLifecycleResponse>(request, request.RequestParameters, ct);
 		/// <summary>
+		/// <c>GET</c> request to the <c>slm.get_stats</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</a>
+		/// </summary>
+		public GetSnapshotLifecycleStatsResponse GetSnapshotLifecycleStats(Func<GetSnapshotLifecycleStatsDescriptor, IGetSnapshotLifecycleStatsRequest> selector = null) => GetSnapshotLifecycleStats(selector.InvokeOrDefault(new GetSnapshotLifecycleStatsDescriptor()));
+		/// <summary>
+		/// <c>GET</c> request to the <c>slm.get_stats</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</a>
+		/// </summary>
+		public Task<GetSnapshotLifecycleStatsResponse> GetSnapshotLifecycleStatsAsync(Func<GetSnapshotLifecycleStatsDescriptor, IGetSnapshotLifecycleStatsRequest> selector = null, CancellationToken ct = default) => GetSnapshotLifecycleStatsAsync(selector.InvokeOrDefault(new GetSnapshotLifecycleStatsDescriptor()), ct);
+		/// <summary>
+		/// <c>GET</c> request to the <c>slm.get_stats</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</a>
+		/// </summary>
+		public GetSnapshotLifecycleStatsResponse GetSnapshotLifecycleStats(IGetSnapshotLifecycleStatsRequest request) => DoRequest<IGetSnapshotLifecycleStatsRequest, GetSnapshotLifecycleStatsResponse>(request, request.RequestParameters);
+		/// <summary>
+		/// <c>GET</c> request to the <c>slm.get_stats</c> API, read more about this API online:
+		/// <para></para>
+		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html">https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</a>
+		/// </summary>
+		public Task<GetSnapshotLifecycleStatsResponse> GetSnapshotLifecycleStatsAsync(IGetSnapshotLifecycleStatsRequest request, CancellationToken ct = default) => DoRequestAsync<IGetSnapshotLifecycleStatsRequest, GetSnapshotLifecycleStatsResponse>(request, request.RequestParameters, ct);
+		/// <summary>
 		/// <c>PUT</c> request to the <c>slm.put_lifecycle</c> API, read more about this API online:
 		/// <para></para>
 		/// <a href = "https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put.html">https://www.elastic.co/guide/en/elasticsearch/reference/current/slm-api-put.html</a>

src/Nest/Requests.SnapshotLifecycleManagement.cs

@@ -129,6 +129,20 @@ public GetSnapshotLifecycleRequest(): base()
 	// Request parameters
 	}
 
+	[InterfaceDataContract]
+	public partial interface IGetSnapshotLifecycleStatsRequest : IRequest<GetSnapshotLifecycleStatsRequestParameters>
+	{
+	}
+
+	///<summary>Request for GetSnapshotLifecycleStats <para>https://www.elastic.co/guide/en/elasticsearch/reference/master/slm-get-stats.html</para></summary>
+	public partial class GetSnapshotLifecycleStatsRequest : PlainRequestBase<GetSnapshotLifecycleStatsRequestParameters>, IGetSnapshotLifecycleStatsRequest
+	{
+		protected IGetSnapshotLifecycleStatsRequest Self => this;
+		internal override ApiUrls ApiUrls => ApiUrlsLookups.SnapshotLifecycleManagementGetSnapshotLifecycleStats;
+	// values part of the url path
+	// Request parameters
+	}
+
 	[InterfaceDataContract]
 	public partial interface IPutSnapshotLifecycleRequest : IRequest<PutSnapshotLifecycleRequestParameters>
 	{

src/Nest/XPack/Info/XPackInfo/XPackInfoResponse.cs

@@ -59,6 +59,7 @@ public class XPackFeatures
 		[DataMember(Name = "graph")]
 		public XPackFeature Graph { get; internal set; }
 
+		// TODO! Expand to fullname in 8.0?
 		[DataMember(Name = "ilm")]
 		public XPackFeature Ilm { get; internal set; }
 
@@ -85,6 +86,9 @@ public class XPackFeatures
 
 		[DataMember(Name = "watcher")]
 		public XPackFeature Watcher { get; internal set; }
+
+		[DataMember(Name = "slm")]
+		public XPackFeature SnapshotLifecycleManagement { get; internal set; }
 	}
 
 	public class XPackFeature

src/Nest/XPack/Info/XPackUsage/XPackUsageResponse.cs

@@ -37,6 +37,7 @@ public class SqlUsage : XPackUsage
 		[DataMember(Name = "queries")]
 		public IReadOnlyDictionary<string, QueryUsage> Queries { get; set; } = EmptyReadOnly<string, QueryUsage>.Dictionary;
 	}
+
 	public class XPackUsageResponse : ResponseBase
 	{
 		[DataMember(Name = "sql")]
@@ -83,6 +84,51 @@ public class XPackUsageResponse : ResponseBase
 
 		[DataMember(Name = "voting_only")]
 		public XPackUsage VotingOnly { get; internal set; }
+
+		[DataMember(Name = "slm")]
+		public SlmUsage SnapshotLifecycleManagement { get; internal set; }
+	}
+
+	public class SlmUsage : XPackUsage
+	{
+		[DataMember(Name = "policy_count")]
+		public int PolicyCount { get; internal set; }
+
+		[DataMember(Name = "policy_stats")]
+		public SnapshotLifecycleStats PolicyStats { get; internal set; }
+	}
+
+	public class SnapshotLifecycleStats
+	{
+		[DataMember(Name = "retention_runs")]
+		public long RetentionRuns { get; internal set; }
+
+		[DataMember(Name = "retention_failed")]
+		public long RetentionFailed { get; internal set; }
+
+		[DataMember(Name = "retention_timed_out")]
+		public long RetentionTimedOut { get; internal set; }
+
+		[DataMember(Name = "retention_deletion_time")]
+		public string RetentionDeletionTime { get; internal set; }
+
+		[DataMember(Name = "retention_deletion_time_millis")]
+		public long RetentionDeletionTimeMilliseconds { get; internal set; }
+
+		[DataMember(Name = "total_snapshots_taken")]
+		public long TotalSnapshotsTaken { get; internal set; }
+
+		[DataMember(Name = "total_snapshots_failed")]
+		public long TotalSnapshotsFailed { get; internal set; }
+
+		[DataMember(Name = "total_snapshots_deleted")]
+		public long TotalSnapshotsDeleted { get; internal set; }
+
+		[DataMember(Name = "total_snapshot_deletion_failures")]
+		public long TotalSnapshotsDeletionFailures { get; internal set; }
+
+		//[DataMember(Name = "policy_stats")]
+		//public IDictionary<string, SnapshotPolicyStats> PolicyStats { get; internal set; }
 	}
 
 	public class XPackUsage

src/Nest/XPack/Slm/GetStats/GetSnapshotLifecycleStatsRequest.cs

@@ -0,0 +1,9 @@
+namespace Nest
+{
+	[MapsApi("slm.get_stats")]
+	public partial interface IGetSnapshotLifecycleStatsRequest { }
+
+	public partial class GetSnapshotLifecycleStatsRequest { }
+
+	public partial class GetSnapshotLifecycleStatsDescriptor { }
+}

src/Nest/XPack/Slm/GetStats/GetSnapshotLifecycleStatsResponse.cs

@@ -0,0 +1,55 @@
+using System.Runtime.Serialization;
+
+namespace Nest
+{
+	public class GetSnapshotLifecycleStatsResponse : ResponseBase
+	{
+		[DataMember(Name = "retention_runs")]
+		public long RetentionRuns { get; internal set; }
+
+		[DataMember(Name = "retention_failed")]
+		public long RetentionFailed { get; internal set; }
+
+		[DataMember(Name = "retention_timed_out")]
+		public long RetentionTimedOut { get; internal set; }
+
+		[DataMember(Name = "retention_deletion_time")]
+		public string RetentionDeletionTime { get; internal set; }
+
+		[DataMember(Name = "retention_deletion_time_millis")]
+		public long RetentionDeletionTimeMilliseconds { get; internal set; }
+
+		[DataMember(Name = "total_snapshots_taken")]
+		public long TotalSnapshotsTaken { get; internal set; }
+
+		[DataMember(Name = "total_snapshots_failed")]
+		public long TotalSnapshotsFailed { get; internal set; }
+
+		[DataMember(Name = "total_snapshots_deleted")]
+		public long TotalSnapshotsDeleted { get; internal set; }
+
+		[DataMember(Name = "total_snapshot_deletion_failures")]
+		public long TotalSnapshotsDeletionFailures { get; internal set; }
+
+		//[DataMember(Name = "policy_stats")]
+		//public IDictionary<string, SnapshotPolicyStats> PolicyStats { get; internal set; }
+	}
+
+	public class SnapshotPolicyStats
+	{
+		[DataMember(Name = "policy")]
+		public string PolicyId { get; internal set; }
+
+		[DataMember(Name = "snapshots_taken")]
+		public long SnapshotsTaken { get; internal set; }
+
+		[DataMember(Name = "snapshots_failed")]
+		public long SnapshotsFailed { get; internal set; }
+
+		[DataMember(Name = "snapshots_deleted")]
+		public long SnapshotsDeleted { get; internal set; }
+
+		[DataMember(Name = "snapshot_deletion_failures")]
+		public long SnapshotsDeletionFailures { get; internal set; }
+	}
+}

src/Nest/_Generated/ApiUrlsLookup.generated.cs

@@ -236,6 +236,7 @@ internal static class ApiUrlsLookups
 		internal static ApiUrls SnapshotLifecycleManagementDeleteSnapshotLifecycle = new ApiUrls(new[]{"_slm/policy/{policy_id}"});
 		internal static ApiUrls SnapshotLifecycleManagementExecuteSnapshotLifecycle = new ApiUrls(new[]{"_slm/policy/{policy_id}/_execute"});
 		internal static ApiUrls SnapshotLifecycleManagementGetSnapshotLifecycle = new ApiUrls(new[]{"_slm/policy/{policy_id}", "_slm/policy"});
+		internal static ApiUrls SnapshotLifecycleManagementGetSnapshotLifecycleStats = new ApiUrls(new[]{"_slm/stats"});
 		internal static ApiUrls SnapshotLifecycleManagementPutSnapshotLifecycle = new ApiUrls(new[]{"_slm/policy/{policy_id}"});
 		internal static ApiUrls SnapshotCleanupRepository = new ApiUrls(new[]{"_snapshot/{repository}/_cleanup"});
 		internal static ApiUrls SnapshotSnapshot = new ApiUrls(new[]{"_snapshot/{repository}/{snapshot}"});

src/Tests/Tests/XPack/Slm/SlmApiTests.cs

@@ -21,7 +21,7 @@ public class SlmApiTests : CoordinatedIntegrationTestBase<XPackCluster>
 		private const string GetSnapshotLifecycleStep = nameof(GetSnapshotLifecycleStep);
 		private const string GetSnapshotLifecycleAfterExecuteStep = nameof(GetSnapshotLifecycleAfterExecuteStep);
 		private const string PutSnapshotLifecycleStep = nameof(PutSnapshotLifecycleStep);
-
+		private const string GetSnapshotLifecycleStats = nameof(GetSnapshotLifecycleStats);
 
 		public SlmApiTests(XPackCluster cluster, EndpointUsage usage) : base(new CoordinatedUsage(cluster, usage)
 		{
@@ -116,6 +116,17 @@ public SlmApiTests(XPackCluster cluster, EndpointUsage usage) : base(new Coordin
 						(v, c, r) => c.SnapshotLifecycleManagement.GetSnapshotLifecycleAsync(r)
 					)
 			},
+			{
+				GetSnapshotLifecycleStats, u =>
+					u.Calls<GetSnapshotLifecycleStatsDescriptor, GetSnapshotLifecycleStatsRequest, IGetSnapshotLifecycleStatsRequest, GetSnapshotLifecycleStatsResponse>(
+						v => new GetSnapshotLifecycleStatsRequest(),
+						(v, d) => d,
+						(v, c, f) => c.SnapshotLifecycleManagement.GetSnapshotLifecycleStats(f),
+						(v, c, f) => c.SnapshotLifecycleManagement.GetSnapshotLifecycleStatsAsync(f),
+						(v, c, r) => c.SnapshotLifecycleManagement.GetSnapshotLifecycleStats(r),
+						(v, c, r) => c.SnapshotLifecycleManagement.GetSnapshotLifecycleStatsAsync(r)
+					)
+			},
 			{
 				DeleteSnapshotLifecycleStep, u =>
 					u.Calls<DeleteSnapshotLifecycleDescriptor, DeleteSnapshotLifecycleRequest, IDeleteSnapshotLifecycleRequest,
@@ -198,5 +209,11 @@ [I] public async Task DeleteSnapshotLifecycleResponse() => await Assert<DeleteSn
 				r.IsValid.Should().BeTrue();
 				r.Acknowledged.Should().BeTrue();
 			});
+
+		[I] public async Task GetSnapshotLifecycleStatsResponse() => await Assert<GetSnapshotLifecycleStatsResponse>(GetSnapshotLifecycleStats,
+			(v, r) =>
+			{
+				r.IsValid.Should().BeTrue();
+			});
 	}
 }