DATAES-684 Implement bulk request from reactive client

Original PR: #342 

* DATAES-684 Implement bulk request from reactive client

* Update src/main/java/org/springframework/data/elasticsearch/client/reactive/ReactiveElasticsearchClient.java

Co-Authored-By: Peter-Josef Meisch <pj.meisch@sothawo.com>

* DATAES-684 Implement bulk request from reactive client

Added author

src/test/java/org/springframework/data/elasticsearch/client/reactive/ReactiveElasticsearchClientTests.java

@@ -18,10 +18,12 @@ package org.springframework.data.elasticsearch.client.reactive;
 import static org.assertj.core.api.Assertions.*;
 
 import lombok.SneakyThrows;
+import org.elasticsearch.action.bulk.BulkRequest;
 import reactor.test.StepVerifier;
 
 import java.io.IOException;
 import java.time.Duration;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -64,6 +66,7 @@ import org.springframework.test.context.ContextConfiguration;
  * @author Christoph Strobl
  * @author Mark Paluch
  * @author Peter-Josef Meisch
+ * @author Henrique Amaral
  */
 @SpringIntegrationTest
 @ContextConfiguration(classes = { ElasticsearchRestTemplateConfiguration.class })
@@ -650,6 +653,34 @@ public class ReactiveElasticsearchClientTests {
 				.verifyError(ElasticsearchStatusException.class);
 	}
 
+	@Test // DATAES-684
+	public void bulkShouldUpdateExistingDocument() {
+		String idFirstDoc = addSourceDocument().ofType(TYPE_I).to(INDEX_I);
+		String idSecondDoc = addSourceDocument().ofType(TYPE_I).to(INDEX_I);
+
+		UpdateRequest requestFirstDoc = new UpdateRequest(INDEX_I, TYPE_I, idFirstDoc) //
+				.doc(Collections.singletonMap("dutiful", "farseer"));
+		UpdateRequest requestSecondDoc = new UpdateRequest(INDEX_I, TYPE_I, idSecondDoc) //
+				.doc(Collections.singletonMap("secondDocUpdate", "secondDocUpdatePartTwo"));
+
+		BulkRequest bulkRequest = new BulkRequest();
+		bulkRequest.add(requestFirstDoc);
+		bulkRequest.add(requestSecondDoc);
+
+		client.bulk(bulkRequest)
+				.as(StepVerifier::create) //
+				.consumeNextWith(it -> {
+					assertThat(it.status()).isEqualTo(RestStatus.OK);
+					assertThat(it.hasFailures()).isFalse();
+
+					Arrays.stream(it.getItems()).forEach(itemResponse-> {
+						assertThat(itemResponse.status()).isEqualTo(RestStatus.OK);
+						assertThat(itemResponse.getVersion()).isEqualTo(2);
+					});
+				})
+		.verifyComplete();
+	}
+
 	private AddToIndexOfType addSourceDocument() {
 		return add(DOC_SOURCE);
 	}

src/test/java/org/springframework/data/elasticsearch/client/reactive/ReactiveElasticsearchClientUnitTests.java

@@ -20,6 +20,8 @@ import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 import static org.springframework.data.elasticsearch.client.reactive.ReactiveMockClientTestsUtils.MockWebClientProvider.Receive.*;
 
+import org.elasticsearch.action.bulk.BulkRequest;
+import org.elasticsearch.rest.RestStatus;
 import reactor.core.publisher.Mono;
 import reactor.test.StepVerifier;
 
@@ -51,6 +53,7 @@ import org.springframework.util.StreamUtils;
 
 /**
  * @author Christoph Strobl
+ * @author Henrique Amaral
  */
 public class ReactiveElasticsearchClientUnitTests {
 
@@ -622,4 +625,26 @@ public class ReactiveElasticsearchClientUnitTests {
 		});
 	}
 
+	@Test // DATAES-684
+	public void bulkShouldEmitResponseCorrectly() {
+
+		hostProvider.when(HOST) //
+				.receiveBulkOk();
+
+		final UpdateRequest updateRequest = new UpdateRequest("twitter", "doc", "1")
+				.doc(Collections.singletonMap("user", "cstrobl"));
+		final BulkRequest bulkRequest = new BulkRequest();
+		bulkRequest.add(updateRequest);
+
+		client.bulk(bulkRequest)
+				.as(StepVerifier::create) //
+				.consumeNextWith(bulkResponse -> {
+
+					assertThat(bulkResponse.status()).isEqualTo(RestStatus.OK);
+					assertThat(bulkResponse.hasFailures()).isFalse();
+
+				}) //
+				.verifyComplete();
+	}
+
 }

src/test/java/org/springframework/data/elasticsearch/client/reactive/ReactiveMockClientTestsUtils.java

@@ -60,6 +60,7 @@ import org.springframework.web.util.UriBuilder;
 /**
  * @author Christoph Strobl
  * @author Huw Ayling-Miller
+ * @author Henrique Amaral
  */
 public class ReactiveMockClientTestsUtils {
 
@@ -371,6 +372,12 @@ public class ReactiveMockClientTestsUtils {
 						});
 			}
 
+			default Receive receiveBulkOk() {
+
+				return receiveJsonFromFile("bulk-ok") //
+						.receive(Receive::ok);
+			}
+
 		}
 
 		public interface Receive {