/* SPDX-License-Identifier: Apache-2.0
*
* The OpenSearch Contributors require contributions made to
* this file be licensed under the Apache-2.0 license or a
* compatible open source license.
*/
/*
* Modifications Copyright OpenSearch Contributors. See
* GitHub history for details.
*
*  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;
using OpenSearch.Net;
using OpenSearch.Client;
using Tests.Framework.DocumentationTests;

namespace Tests.ClientConcepts.HighLevel.Indexing
{
	/**[[ingest-nodes]]
	*=== Ingest Node
	*
	* OpenSearch will automatically re-route index requests to ingest nodes,
	* however with some careful consideration you can optimise this path.
	*/
	public class IngestNodes : DocumentationTestBase
	{
		private readonly IOpenSearchClient client = new OpenSearchClient(new ConnectionSettings(new SingleNodeConnectionPool(new Uri("http://localhost:9200")), new InMemoryConnection()));

		/**
		* ==== Custom indexing client
		*
		* Since OpenSearch will automatically reroute ingest requests to ingest nodes, you don't have to specify or configure any routing
		* information. However, if you're doing heavy ingestion and have dedicated ingest nodes, it makes sense to send index requests to
		* these nodes directly, to avoid any extra hops in the cluster.
		*
		* The simplest way to achieve this is to create a dedicated "indexing" client instance, and use it for indexing requests.
		*/
		public void CustomClient()
		{
			var pool = new StaticConnectionPool(new [] //<1> list of ingest nodes
			{
				new Uri("http://ingestnode1:9200"),
				new Uri("http://ingestnode2:9200"),
				new Uri("http://ingestnode3:9200")
			});
			var settings = new ConnectionSettings(pool);
			var indexingClient = new OpenSearchClient(settings);
		}

		/**
		* ==== Determining ingest capability
		*
		* In complex cluster configurations it can be easier to use a sniffing connection pool along with a node predicate to
		* filter out the nodes that have ingest capabilities. This allows you to customise the cluster and not have to reconfigure
		* the client.
		*/
		public void SniffingConnectionPool()
		{
			var pool = new SniffingConnectionPool(new [] //<1> list of cluster nodes
			{
				new Uri("http://node1:9200"),
				new Uri("http://node2:9200"),
				new Uri("http://node3:9200")
			});
			var settings = new ConnectionSettings(pool).NodePredicate(n => n.IngestEnabled); //<2> predicate to select only nodes with ingest capabilities
			var indexingClient = new OpenSearchClient(settings);
		}
	}
}