Make JsonpMapper a customizable bean.

src/main/asciidoc/reference/elasticsearch-clients.adoc

@@ -32,24 +32,31 @@ public class MyClientConfig extends ElasticsearchConfiguration {
 <.> for a detailed description of the builder methods see <<elasticsearch.clients.configuration>>
 ====
 
+The `ElasticsearchConfiguration` class allows further configuration by overriding for example the `jsonpMapper()` or `transportOptions()` methods.
+
+
 The following beans can then be injected in other Spring components:
 
 ====
 [source,java]
 ----
-@Autowired
+import org.springframework.beans.factory.annotation.Autowired;@Autowired
 ElasticsearchOperations operations;      <.>
 
 @Autowired 
 ElasticsearchClient elasticsearchClient; <.>
 
 @Autowired
 RestClient restClient;                   <.>
+
+@Autowired
+JsonpMapper jsonpMapper;                 <.> 
 ----
 
 <.> an implementation of `ElasticsearchOperations`
 <.> the `co.elastic.clients.elasticsearch.ElasticsearchClient` that is used.
 <.> the low level `RestClient` from the Elasticsearch libraries
+<.> the `JsonpMapper` user by the Elasticsearch `Transport`
 ====
 
 Basically one should just use the `ElasticsearchOperations` to interact with the Elasticsearch cluster.
@@ -79,6 +86,8 @@ public class MyClientConfig extends ReactiveElasticsearchConfiguration {
 <.> for a detailed description of the builder methods see <<elasticsearch.clients.configuration>>
 ====
 
+The `ReactiveElasticsearchConfiguration` class allows further configuration by overriding for example the `jsonpMapper()` or `transportOptions()` methods.
+
 The following beans can then be injected in other Spring components:
 
 ====
@@ -92,6 +101,9 @@ ReactiveElasticsearchClient elasticsearchClient; <.>
 
 @Autowired
 RestClient restClient;                           <.>
+
+@Autowired
+JsonpMapper jsonpMapper;                         <.> 
 ----
 
 the following can be injected:
@@ -100,6 +112,7 @@ the following can be injected:
 <.> the `org.springframework.data.elasticsearch.client.elc.ReactiveElasticsearchClient` that is used.
 This is a reactive implementation based on the Elasticsearch client implementation.
 <.> the low level `RestClient` from the Elasticsearch libraries
+<.> the `JsonpMapper` user by the Elasticsearch `Transport`
 ====
 
 Basically one should just use the `ReactiveElasticsearchOperations` to interact with the Elasticsearch cluster.

src/main/java/org/springframework/data/elasticsearch/client/elc/ElasticsearchClients.java

@@ -16,6 +16,7 @@
 package org.springframework.data.elasticsearch.client.elc;
 
 import co.elastic.clients.elasticsearch.ElasticsearchClient;
+import co.elastic.clients.json.JsonpMapper;
 import co.elastic.clients.json.jackson.JacksonJsonpMapper;
 import co.elastic.clients.transport.ElasticsearchTransport;
 import co.elastic.clients.transport.TransportOptions;
@@ -24,8 +25,6 @@
 import co.elastic.clients.transport.rest_client.RestClientOptions;
 import co.elastic.clients.transport.rest_client.RestClientTransport;
 
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.time.Duration;
 import java.util.Arrays;
@@ -60,11 +59,12 @@ public final class ElasticsearchClients {
 	/**
 	 * Name of whose value can be used to correlate log messages for this request.
 	 */
-	private static final String LOG_ID_ATTRIBUTE = ElasticsearchClients.class.getName() + ".LOG_ID";
 	private static final String X_SPRING_DATA_ELASTICSEARCH_CLIENT = "X-SpringDataElasticsearch-Client";
 	private static final String IMPERATIVE_CLIENT = "imperative";
 	private static final String REACTIVE_CLIENT = "reactive";
 
+	private static final JsonpMapper DEFAULT_JSONP_MAPPER = new JacksonJsonpMapper();
+
 	/**
 	 * Creates a new {@link ReactiveElasticsearchClient}
 	 *
@@ -75,7 +75,7 @@ public static ReactiveElasticsearchClient createReactive(ClientConfiguration cli
 
 		Assert.notNull(clientConfiguration, "clientConfiguration must not be null");
 
-		return createReactive(getRestClient(clientConfiguration), null);
+		return createReactive(getRestClient(clientConfiguration), null, DEFAULT_JSONP_MAPPER);
 	}
 
 	/**
@@ -90,7 +90,24 @@ public static ReactiveElasticsearchClient createReactive(ClientConfiguration cli
 
 		Assert.notNull(clientConfiguration, "ClientConfiguration must not be null!");
 
-		return createReactive(getRestClient(clientConfiguration), transportOptions);
+		return createReactive(getRestClient(clientConfiguration), transportOptions, DEFAULT_JSONP_MAPPER);
+	}
+
+	/**
+	 * Creates a new {@link ReactiveElasticsearchClient}
+	 *
+	 * @param clientConfiguration configuration options, must not be {@literal null}.
+	 * @param transportOptions options to be added to each request.
+	 * @param jsonpMapper the JsonpMapper to use
+	 * @return the {@link ReactiveElasticsearchClient}
+	 */
+	public static ReactiveElasticsearchClient createReactive(ClientConfiguration clientConfiguration,
+			@Nullable TransportOptions transportOptions, JsonpMapper jsonpMapper) {
+
+		Assert.notNull(clientConfiguration, "ClientConfiguration must not be null!");
+		Assert.notNull(jsonpMapper, "jsonpMapper must not be null");
+
+		return createReactive(getRestClient(clientConfiguration), transportOptions, jsonpMapper);
 	}
 
 	/**
@@ -100,7 +117,7 @@ public static ReactiveElasticsearchClient createReactive(ClientConfiguration cli
 	 * @return the {@link ReactiveElasticsearchClient}
 	 */
 	public static ReactiveElasticsearchClient createReactive(RestClient restClient) {
-		return createReactive(restClient, null);
+		return createReactive(restClient, null, DEFAULT_JSONP_MAPPER);
 	}
 
 	/**
@@ -111,8 +128,9 @@ public static ReactiveElasticsearchClient createReactive(RestClient restClient)
 	 * @return the {@link ReactiveElasticsearchClient}
 	 */
 	public static ReactiveElasticsearchClient createReactive(RestClient restClient,
-			@Nullable TransportOptions transportOptions) {
-		return new ReactiveElasticsearchClient(getElasticsearchTransport(restClient, REACTIVE_CLIENT, transportOptions));
+			@Nullable TransportOptions transportOptions, JsonpMapper jsonpMapper) {
+		return new ReactiveElasticsearchClient(
+				getElasticsearchTransport(restClient, REACTIVE_CLIENT, transportOptions, jsonpMapper));
 	}
 
 	/**
@@ -122,7 +140,7 @@ public static ReactiveElasticsearchClient createReactive(RestClient restClient,
 	 * @return the {@link ElasticsearchClient}
 	 */
 	public static ElasticsearchClient createImperative(ClientConfiguration clientConfiguration) {
-		return createImperative(getRestClient(clientConfiguration), null);
+		return createImperative(getRestClient(clientConfiguration), null, DEFAULT_JSONP_MAPPER);
 	}
 
 	/**
@@ -134,7 +152,7 @@ public static ElasticsearchClient createImperative(ClientConfiguration clientCon
 	 */
 	public static ElasticsearchClient createImperative(ClientConfiguration clientConfiguration,
 			TransportOptions transportOptions) {
-		return createImperative(getRestClient(clientConfiguration), transportOptions);
+		return createImperative(getRestClient(clientConfiguration), transportOptions, DEFAULT_JSONP_MAPPER);
 	}
 
 	/**
@@ -144,22 +162,24 @@ public static ElasticsearchClient createImperative(ClientConfiguration clientCon
 	 * @return the {@link ElasticsearchClient}
 	 */
 	public static ElasticsearchClient createImperative(RestClient restClient) {
-		return createImperative(restClient, null);
+		return createImperative(restClient, null, DEFAULT_JSONP_MAPPER);
 	}
 
 	/**
 	 * Creates a new imperative {@link ElasticsearchClient}
 	 *
 	 * @param restClient the RestClient to use
 	 * @param transportOptions options to be added to each request.
+	 * @param jsonpMapper the mapper for the transport to use
 	 * @return the {@link ElasticsearchClient}
 	 */
-	public static ElasticsearchClient createImperative(RestClient restClient,
-			@Nullable TransportOptions transportOptions) {
+	public static ElasticsearchClient createImperative(RestClient restClient, @Nullable TransportOptions transportOptions,
+			JsonpMapper jsonpMapper) {
 
 		Assert.notNull(restClient, "restClient must not be null");
 
-		ElasticsearchTransport transport = getElasticsearchTransport(restClient, IMPERATIVE_CLIENT, transportOptions);
+		ElasticsearchTransport transport = getElasticsearchTransport(restClient, IMPERATIVE_CLIENT, transportOptions,
+				jsonpMapper);
 
 		return new AutoCloseableElasticsearchClient(transport);
 	}
@@ -236,7 +256,7 @@ private static RestClientBuilder getRestClientBuilder(ClientConfiguration client
 	}
 
 	private static ElasticsearchTransport getElasticsearchTransport(RestClient restClient, String clientType,
-			@Nullable TransportOptions transportOptions) {
+			@Nullable TransportOptions transportOptions, JsonpMapper jsonpMapper) {
 
 		TransportOptions.Builder transportOptionsBuilder = transportOptions != null ? transportOptions.toBuilder()
 				: new RestClientOptions(RequestOptions.DEFAULT).toBuilder();
@@ -260,7 +280,7 @@ private static ElasticsearchTransport getElasticsearchTransport(RestClient restC
 		TransportOptions transportOptionsWithHeader = transportOptionsBuilder
 				.addHeader(X_SPRING_DATA_ELASTICSEARCH_CLIENT, clientType).build();
 
-		return new RestClientTransport(restClient, new JacksonJsonpMapper(), transportOptionsWithHeader);
+		return new RestClientTransport(restClient, jsonpMapper, transportOptionsWithHeader);
 	}
 
 	private static List<String> formattedHosts(List<InetSocketAddress> hosts, boolean useSsl) {

src/main/java/org/springframework/data/elasticsearch/client/elc/ElasticsearchConfiguration.java

@@ -16,11 +16,14 @@
 package org.springframework.data.elasticsearch.client.elc;
 
 import co.elastic.clients.elasticsearch.ElasticsearchClient;
+import co.elastic.clients.json.JsonpMapper;
+import co.elastic.clients.json.jackson.JacksonJsonpMapper;
 import co.elastic.clients.transport.TransportOptions;
 import co.elastic.clients.transport.rest_client.RestClientOptions;
 
 import org.elasticsearch.client.RequestOptions;
 import org.elasticsearch.client.RestClient;
+import org.jetbrains.annotations.NotNull;
 import org.springframework.context.annotation.Bean;
 import org.springframework.data.elasticsearch.client.ClientConfiguration;
 import org.springframework.data.elasticsearch.config.ElasticsearchConfigurationSupport;
@@ -42,7 +45,7 @@ public abstract class ElasticsearchConfiguration extends ElasticsearchConfigurat
 	 *
 	 * @return configuration, must not be {@literal null}
 	 */
-	@Bean(name="elasticsearchClientConfiguration")
+	@Bean(name = "elasticsearchClientConfiguration")
 	public abstract ClientConfiguration clientConfiguration();
 
 	/**
@@ -63,14 +66,15 @@ public RestClient elasticsearchRestClient(ClientConfiguration clientConfiguratio
 	 * Provides the {@link ElasticsearchClient} to be used.
 	 *
 	 * @param restClient the low level RestClient to use
+	 * @param jsonpMapper the JsonpMapper to use
 	 * @return ElasticsearchClient instance
 	 */
 	@Bean
-	public ElasticsearchClient elasticsearchClient(RestClient restClient) {
+	public ElasticsearchClient elasticsearchClient(RestClient restClient, JsonpMapper jsonpMapper) {
 
 		Assert.notNull(restClient, "restClient must not be null");
 
-		return ElasticsearchClients.createImperative(restClient, transportOptions());
+		return ElasticsearchClients.createImperative(restClient, transportOptions(), jsonpMapper);
 	}
 
 	/**
@@ -89,6 +93,18 @@ public ElasticsearchOperations elasticsearchOperations(ElasticsearchConverter el
 		return template;
 	}
 
+	/**
+	 * Provides the JsonpMapper bean that is used in the {@link #elasticsearchClient(RestClient, JsonpMapper)} method.
+	 * This can be adapted by overriding tge {@link #getJsonpMapper()} method.
+	 *
+	 * @return the {@link JsonpMapper} to use
+	 * @since 5.2
+	 */
+	@Bean
+	public JsonpMapper jsonpMapper() {
+		return new JacksonJsonpMapper();
+	}
+
 	/**
 	 * @return the options that should be added to every request. Must not be {@literal null}
 	 */

src/main/java/org/springframework/data/elasticsearch/client/elc/ReactiveElasticsearchConfiguration.java

@@ -15,6 +15,8 @@
  */
 package org.springframework.data.elasticsearch.client.elc;
 
+import co.elastic.clients.json.JsonpMapper;
+import co.elastic.clients.json.jackson.JacksonJsonpMapper;
 import co.elastic.clients.transport.TransportOptions;
 import co.elastic.clients.transport.rest_client.RestClientOptions;
 
@@ -41,7 +43,7 @@ public abstract class ReactiveElasticsearchConfiguration extends ElasticsearchCo
 	 *
 	 * @return configuration, must not be {@literal null}
 	 */
-	@Bean(name="elasticsearchClientConfiguration")
+	@Bean(name = "elasticsearchClientConfiguration")
 	public abstract ClientConfiguration clientConfiguration();
 
 	/**
@@ -65,11 +67,11 @@ public RestClient elasticsearchRestClient(ClientConfiguration clientConfiguratio
 	 * @return ReactiveElasticsearchClient instance.
 	 */
 	@Bean
-	public ReactiveElasticsearchClient reactiveElasticsearchClient(RestClient restClient) {
+	public ReactiveElasticsearchClient reactiveElasticsearchClient(RestClient restClient, JsonpMapper jsonpMapper) {
 
 		Assert.notNull(restClient, "restClient must not be null");
 
-		return ElasticsearchClients.createReactive(restClient, transportOptions());
+		return ElasticsearchClients.createReactive(restClient, transportOptions(), jsonpMapper);
 	}
 
 	/**
@@ -88,6 +90,18 @@ public ReactiveElasticsearchOperations reactiveElasticsearchOperations(Elasticse
 		return template;
 	}
 
+	/**
+	 * Provides the JsonpMapper that is used in the {@link #reactiveElasticsearchClient(RestClient, JsonpMapper)} method
+	 * and exposes it as a bean.
+	 *
+	 * @return the {@link JsonpMapper} to use
+	 * @since 5.2
+	 */
+	@Bean
+	public JsonpMapper jsonpMapper() {
+		return new JacksonJsonpMapper();
+	}
+
 	/**
 	 * @return the options that should be added to every request. Must not be {@literal null}
 	 */

src/test/java/org/springframework/data/elasticsearch/client/elc/DevTests.java

@@ -30,6 +30,8 @@
 import co.elastic.clients.elasticsearch.indices.GetIndicesSettingsRequest;
 import co.elastic.clients.elasticsearch.indices.GetIndicesSettingsResponse;
 import co.elastic.clients.elasticsearch.indices.IndexSettings;
+import co.elastic.clients.json.JsonpMapper;
+import co.elastic.clients.json.jackson.JacksonJsonpMapper;
 import co.elastic.clients.transport.ElasticsearchTransport;
 import co.elastic.clients.transport.TransportOptions;
 import co.elastic.clients.transport.rest_client.RestClientOptions;
@@ -75,10 +77,12 @@ public class DevTests {
 	private final TransportOptions transportOptions = new RestClientOptions(RequestOptions.DEFAULT).toBuilder()
 			.addHeader("X-SpringDataElasticsearch-AlwaysThere", "true").setParameter("pretty", "true").build();
 
+	private final JsonpMapper jsonpMapper = new JacksonJsonpMapper();
+
 	private final ReactiveElasticsearchClient reactiveElasticsearchClient = ElasticsearchClients
 			.createReactive(clientConfiguration(), transportOptions);
 	private final ElasticsearchClient imperativeElasticsearchClient = ElasticsearchClients
-			.createImperative(ElasticsearchClients.getRestClient(clientConfiguration()), transportOptions);
+			.createImperative(ElasticsearchClients.getRestClient(clientConfiguration()), transportOptions, jsonpMapper);
 
 	@Test
 	void someTest() throws IOException {