Upgrade to Elasticsearch Client 8.17.1

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/data/elasticsearch/ElasticsearchReactiveHealthIndicator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -69,6 +69,7 @@ private Health processResponse(Health.Builder builder, HealthResponse response)
 			builder.withDetail("task_max_waiting_in_queue_millis", response.taskMaxWaitingInQueueMillis());
 			builder.withDetail("active_shards_percent_as_number",
 					Double.parseDouble(response.activeShardsPercentAsNumber()));
+			builder.withDetail("unassigned_primary_shards", response.unassignedPrimaryShards());
 			return builder.build();
 		}
 		return builder.down().build();

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/elasticsearch/ElasticsearchReactiveHealthIndicatorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -72,15 +72,15 @@ void shutdown() throws Exception {
 
 	@Test
 	void elasticsearchIsUp() {
-		setupMockResponse(200, "green");
+		setupMockResponse("green");
 		Health health = this.healthIndicator.health().block(TIMEOUT);
 		assertThat(health.getStatus()).isEqualTo(Status.UP);
 		assertHealthDetailsWithStatus(health.getDetails(), "green");
 	}
 
 	@Test
 	void elasticsearchWithYellowStatusIsUp() {
-		setupMockResponse(200, "yellow");
+		setupMockResponse("yellow");
 		Health health = this.healthIndicator.health().block(TIMEOUT);
 		assertThat(health.getStatus()).isEqualTo(Status.UP);
 		assertHealthDetailsWithStatus(health.getDetails(), "yellow");
@@ -104,7 +104,7 @@ void elasticsearchIsDownByResponseCode() {
 
 	@Test
 	void elasticsearchIsOutOfServiceByStatus() {
-		setupMockResponse(200, "red");
+		setupMockResponse("red");
 		Health health = this.healthIndicator.health().block(TIMEOUT);
 		assertThat(health.getStatus()).isEqualTo(Status.OUT_OF_SERVICE);
 		assertHealthDetailsWithStatus(health.getDetails(), "red");
@@ -116,10 +116,11 @@ private void assertHealthDetailsWithStatus(Map<String, Object> details, String s
 				entry("active_primary_shards", 0), entry("active_shards", 0), entry("relocating_shards", 0),
 				entry("initializing_shards", 0), entry("unassigned_shards", 0), entry("delayed_unassigned_shards", 0),
 				entry("number_of_pending_tasks", 0), entry("number_of_in_flight_fetch", 0),
-				entry("task_max_waiting_in_queue_millis", 0L), entry("active_shards_percent_as_number", 100.0));
+				entry("task_max_waiting_in_queue_millis", 0L), entry("active_shards_percent_as_number", 100.0),
+				entry("unassigned_primary_shards", 10));
 	}
 
-	private void setupMockResponse(int responseCode, String status) {
+	private void setupMockResponse(String status) {
 		MockResponse mockResponse = new MockResponse().setBody(createJsonResult(status))
 			.setHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
 			.setHeader("X-Elastic-Product", "Elasticsearch");
@@ -133,7 +134,8 @@ private String createJsonResult(String status) {
 						+ "\"active_shards\":0,\"relocating_shards\":0,\"initializing_shards\":0,"
 						+ "\"unassigned_shards\":0,\"delayed_unassigned_shards\":0,"
 						+ "\"number_of_pending_tasks\":0,\"number_of_in_flight_fetch\":0,"
-						+ "\"task_max_waiting_in_queue_millis\":0,\"active_shards_percent_as_number\":100.0}",
+						+ "\"task_max_waiting_in_queue_millis\":0,\"active_shards_percent_as_number\":100.0,"
+						+ "\"unassigned_primary_shards\": 10 }",
 				status);
 	}
 

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/elasticsearch/ElasticsearchRestClientHealthIndicatorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -122,20 +122,20 @@ private void assertHealthDetailsWithStatus(Map<String, Object> details, String s
 				entry("active_primary_shards", 0), entry("active_shards", 0), entry("relocating_shards", 0),
 				entry("initializing_shards", 0), entry("unassigned_shards", 0), entry("delayed_unassigned_shards", 0),
 				entry("number_of_pending_tasks", 0), entry("number_of_in_flight_fetch", 0),
-				entry("task_max_waiting_in_queue_millis", 0), entry("active_shards_percent_as_number", 100.0));
+				entry("task_max_waiting_in_queue_millis", 0), entry("active_shards_percent_as_number", 100.0),
+				entry("unassigned_primary_shards", 10));
 	}
 
 	private String createJsonResult(int responseCode, String status) {
 		if (responseCode == 200) {
-			return String.format(
-					"{\"cluster_name\":\"elasticsearch\","
-							+ "\"status\":\"%s\",\"timed_out\":false,\"number_of_nodes\":1,"
-							+ "\"number_of_data_nodes\":1,\"active_primary_shards\":0,"
-							+ "\"active_shards\":0,\"relocating_shards\":0,\"initializing_shards\":0,"
-							+ "\"unassigned_shards\":0,\"delayed_unassigned_shards\":0,"
-							+ "\"number_of_pending_tasks\":0,\"number_of_in_flight_fetch\":0,"
-							+ "\"task_max_waiting_in_queue_millis\":0,\"active_shards_percent_as_number\":100.0}",
-					status);
+			return String.format("{\"cluster_name\":\"elasticsearch\","
+					+ "\"status\":\"%s\",\"timed_out\":false,\"number_of_nodes\":1,"
+					+ "\"number_of_data_nodes\":1,\"active_primary_shards\":0,"
+					+ "\"active_shards\":0,\"relocating_shards\":0,\"initializing_shards\":0,"
+					+ "\"unassigned_shards\":0,\"delayed_unassigned_shards\":0,"
+					+ "\"number_of_pending_tasks\":0,\"number_of_in_flight_fetch\":0,"
+					+ "\"task_max_waiting_in_queue_millis\":0,\"active_shards_percent_as_number\":100.0,"
+					+ "\"unassigned_primary_shards\": 10 }", status);
 		}
 		return "{\n  \"error\": \"Server Error\",\n  \"status\": " + responseCode + "\n}";
 	}

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -337,7 +337,7 @@ bom {
 			releaseNotes("https://github.com/ehcache/ehcache3/releases/tag/v{version}")
 		}
 	}
-	library("Elasticsearch Client", "8.15.5") {
+	library("Elasticsearch Client", "8.17.1") {
 		alignWith {
 			version {
 				from "org.springframework.data:spring-data-elasticsearch"

spring-boot-project/spring-boot-testcontainers/src/dockerTest/java/org/springframework/boot/testcontainers/service/connection/elasticsearch/ElasticsearchContainerConnectionDetailsFactoryTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2024 the original author or authors.
+ * Copyright 2012-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 package org.springframework.boot.testcontainers.service.connection.elasticsearch;
 
 import java.io.IOException;
+import java.time.Duration;
 
 import co.elastic.clients.elasticsearch.ElasticsearchClient;
 import org.junit.jupiter.api.Test;
@@ -30,7 +31,7 @@
 import org.springframework.boot.autoconfigure.elasticsearch.ElasticsearchConnectionDetails;
 import org.springframework.boot.autoconfigure.elasticsearch.ElasticsearchRestClientAutoConfiguration;
 import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
-import org.springframework.boot.testsupport.container.TestImage;
+import org.springframework.boot.testsupport.container.ElasticsearchContainer8;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 
@@ -47,7 +48,8 @@ class ElasticsearchContainerConnectionDetailsFactoryTests {
 
 	@Container
 	@ServiceConnection
-	static final ElasticsearchContainer elasticsearch = TestImage.container(ElasticsearchContainer.class);
+	static final ElasticsearchContainer elasticsearch = new ElasticsearchContainer8().withStartupAttempts(5)
+		.withStartupTimeout(Duration.ofMinutes(10));
 
 	@Autowired(required = false)
 	private ElasticsearchConnectionDetails connectionDetails;

spring-boot-project/spring-boot-tools/spring-boot-test-support-docker/src/main/java/org/springframework/boot/testsupport/container/ElasticsearchContainer8.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2012-2025 the original author or authors.
+ *
+ * Licensed 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
+ *
+ *      https://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.
+ */
+
+package org.springframework.boot.testsupport.container;
+
+import org.testcontainers.elasticsearch.ElasticsearchContainer;
+
+/**
+ * A container suitable for testing Elasticsearch 8.
+ *
+ * @author Dmytro Nosan
+ */
+public class ElasticsearchContainer8 extends ElasticsearchContainer {
+
+	public ElasticsearchContainer8() {
+		super(TestImage.ELASTICSEARCH_8.toString());
+		addEnv("ES_JAVA_OPTS", "-Xms32m -Xmx512m");
+		addEnv("xpack.security.enabled", "false");
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-test-support-docker/src/main/java/org/springframework/boot/testsupport/container/TestImage.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2024 the original author or authors.
+ * Copyright 2012-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -117,7 +117,7 @@ public enum TestImage {
 	/**
 	 * A container image suitable for testing Elasticsearch 8.
 	 */
-	ELASTICSEARCH_8("elasticsearch", "8.6.1"),
+	ELASTICSEARCH_8("elasticsearch", "8.17.1"),
 
 	/**
 	 * A container image suitable for testing Grafana OTel LGTM.