Minimise dependencies on Log4j2

Closes spring-projectsgh-15441

Author: wilkinsona

spring-boot-project/spring-boot-actuator-autoconfigure/pom.xml

@@ -234,11 +234,6 @@
 			<artifactId>kafka-clients</artifactId>
 			<optional>true</optional>
 		</dependency>
-		<dependency>
-			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-core</artifactId>
-			<optional>true</optional>
-		</dependency>
 		<dependency>
 			<groupId>org.apache.tomcat.embed</groupId>
 			<artifactId>tomcat-embed-core</artifactId>
@@ -488,7 +483,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-slf4j-impl</artifactId>
+			<artifactId>log4j-to-slf4j</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/Log4J2MetricsAutoConfiguration.java

@@ -16,12 +16,10 @@
 
 package org.springframework.boot.actuate.autoconfigure.metrics;
 
-import java.util.Collections;
-
 import io.micrometer.core.instrument.MeterRegistry;
 import io.micrometer.core.instrument.binder.logging.Log4j2Metrics;
 import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.spi.LoggerContext;
 
 import org.springframework.boot.actuate.autoconfigure.metrics.Log4J2MetricsAutoConfiguration.Log4JCoreLoggerContextCondition;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
@@ -44,31 +42,36 @@
  */
 @Configuration
 @AutoConfigureAfter(MetricsAutoConfiguration.class)
-@ConditionalOnClass({ Log4j2Metrics.class, LoggerContext.class, LogManager.class })
+@ConditionalOnClass(value = { Log4j2Metrics.class,
+		LogManager.class }, name = "org.apache.logging.log4j.core.LoggerContext")
 @ConditionalOnBean(MeterRegistry.class)
 @Conditional(Log4JCoreLoggerContextCondition.class)
 public class Log4J2MetricsAutoConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
 	public Log4j2Metrics log4j2Metrics() {
-		return new Log4j2Metrics(Collections.emptyList(),
-				(LoggerContext) LogManager.getContext(false));
+		return new Log4j2Metrics();
 	}
 
 	static class Log4JCoreLoggerContextCondition extends SpringBootCondition {
 
 		@Override
 		public ConditionOutcome getMatchOutcome(ConditionContext context,
 				AnnotatedTypeMetadata metadata) {
-			org.apache.logging.log4j.spi.LoggerContext loggerContext = LogManager
-					.getContext(false);
-			if (loggerContext instanceof LoggerContext) {
-				return ConditionOutcome.match(
-						"LoggerContext was an instance of org.apache.logging.log4j.spi.LoggerContext");
+			LoggerContext loggerContext = LogManager.getContext(false);
+			try {
+				if (Class.forName("org.apache.logging.log4j.core.LoggerContext")
+						.isInstance(loggerContext)) {
+					return ConditionOutcome.match(
+							"LoggerContext was an instance of org.apache.logging.log4j.core.LoggerContext");
+				}
+			}
+			catch (Throwable ex) {
+				// Continue with no match
 			}
 			return ConditionOutcome.noMatch(
-					"Logger context was not an instance of org.apache.logging.log4j.spi.LoggerContext");
+					"Logger context was not an instance of org.apache.logging.log4j.core.LoggerContext");
 		}
 
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/Log4J2MetricsAutoConfigurationTests.java spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/Log4J2MetricsWithLog4jLoggerContextAutoConfigurationTests.java

@@ -17,11 +17,15 @@
 package org.springframework.boot.actuate.autoconfigure.metrics;
 
 import io.micrometer.core.instrument.binder.logging.Log4j2Metrics;
-import org.junit.jupiter.api.Test;
+import org.apache.logging.log4j.LogManager;
+import org.junit.Test;
+import org.junit.runner.RunWith;
 
 import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.boot.testsupport.runner.classpath.ClassPathOverrides;
+import org.springframework.boot.testsupport.runner.classpath.ModifiedClassPathRunner;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -32,20 +36,26 @@
  *
  * @author Andy Wilkinson
  */
-public class Log4J2MetricsAutoConfigurationTests {
+@RunWith(ModifiedClassPathRunner.class)
+@ClassPathOverrides("org.apache.logging.log4j:log4j-core:2.11.1")
+public class Log4J2MetricsWithLog4jLoggerContextAutoConfigurationTests {
 
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.with(MetricsRun.simple()).withConfiguration(
 					AutoConfigurations.of(Log4J2MetricsAutoConfiguration.class));
 
 	@Test
 	public void autoConfiguresLog4J2Metrics() {
+		assertThat(LogManager.getContext().getClass().getName())
+				.isEqualTo("org.apache.logging.log4j.core.LoggerContext");
 		this.contextRunner
 				.run((context) -> assertThat(context).hasSingleBean(Log4j2Metrics.class));
 	}
 
 	@Test
 	public void allowsCustomLog4J2MetricsToBeUsed() {
+		assertThat(LogManager.getContext().getClass().getName())
+				.isEqualTo("org.apache.logging.log4j.core.LoggerContext");
 		this.contextRunner.withUserConfiguration(CustomLog4J2MetricsConfiguration.class)
 				.run((context) -> assertThat(context).hasSingleBean(Log4j2Metrics.class)
 						.hasBean("customLog4J2Metrics"));

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/Log4J2MetricsWithSlf4jLoggerContextAutoConfigurationTests.java

@@ -17,15 +17,13 @@
 package org.springframework.boot.actuate.autoconfigure.metrics;
 
 import io.micrometer.core.instrument.binder.logging.Log4j2Metrics;
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.slf4j.SLF4JLoggerContext;
+import org.junit.jupiter.api.Test;
 
 import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
-import org.springframework.boot.testsupport.runner.classpath.ClassPathExclusions;
-import org.springframework.boot.testsupport.runner.classpath.ClassPathOverrides;
-import org.springframework.boot.testsupport.runner.classpath.ModifiedClassPathRunner;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -34,10 +32,6 @@
  *
  * @author Andy Wilkinson
  */
-@RunWith(ModifiedClassPathRunner.class)
-@ClassPathOverrides({ "org.apache.logging.log4j:log4j-to-slf4j:2.11.1",
-		"org.apache.logging.log4j:log4j-core:2.11.1" })
-@ClassPathExclusions("log4j-slf4j-impl-*.jar")
 public class Log4J2MetricsWithSlf4jLoggerContextAutoConfigurationTests {
 
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
@@ -46,6 +40,7 @@ public class Log4J2MetricsWithSlf4jLoggerContextAutoConfigurationTests {
 
 	@Test
 	public void backsOffWhenLoggerContextIsBackedBySlf4j() {
+		assertThat(LogManager.getContext()).isInstanceOf(SLF4JLoggerContext.class);
 		this.contextRunner.run(
 				(context) -> assertThat(context).doesNotHaveBean(Log4j2Metrics.class));
 	}

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/resources/log4j2-test.xml

@@ -294,23 +294,18 @@
 			<scope>test</scope>
 		</dependency>
 		<dependency>
-			<groupId>javax.xml.bind</groupId>
-			<artifactId>jaxb-api</artifactId>
+			<groupId>ch.qos.logback</groupId>
+			<artifactId>logback-classic</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
-			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-slf4j-impl</artifactId>
-			<scope>test</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-api</artifactId>
+			<groupId>javax.xml.bind</groupId>
+			<artifactId>jaxb-api</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-core</artifactId>
+			<artifactId>log4j-to-slf4j</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>

spring-boot-project/spring-boot-actuator/pom.xml

@@ -767,7 +767,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-core</artifactId>
+			<artifactId>log4j-to-slf4j</artifactId>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -790,11 +790,6 @@
 			<artifactId>neo4j-ogm-embedded-driver</artifactId>
 			<scope>test</scope>
 		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>log4j-over-slf4j</artifactId>
-			<scope>test</scope>
-		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-test</artifactId>

spring-boot-project/spring-boot-autoconfigure/pom.xml

@@ -13,7 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.springframework.boot.autoconfigure.data.elasticsearch;
 
 import java.util.List;
@@ -22,10 +21,12 @@
 import org.elasticsearch.client.transport.TransportClient;
 import org.elasticsearch.cluster.node.DiscoveryNode;
 import org.junit.After;
-import org.junit.jupiter.api.Test;
+import org.junit.ClassRule;
+import org.junit.Test;
 
 import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
 import org.springframework.boot.test.util.TestPropertyValues;
+import org.springframework.boot.testsupport.testcontainers.ElasticsearchContainer;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -41,6 +42,9 @@
  */
 public class ElasticsearchAutoConfigurationTests {
 
+	@ClassRule
+	public static ElasticsearchContainer elasticsearch = new ElasticsearchContainer();
+
 	private AnnotationConfigApplicationContext context;
 
 	@After
@@ -65,19 +69,17 @@ public void useExistingClient() {
 	@Test
 	public void createTransportClient() {
 		this.context = new AnnotationConfigApplicationContext();
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			TestPropertyValues.of(
-					"spring.data.elasticsearch.cluster-nodes:localhost:"
-							+ node.getTcpPort(),
-					"spring.data.elasticsearch.properties.path.home:target/es/client")
-					.applyTo(this.context);
-			this.context.register(PropertyPlaceholderAutoConfiguration.class,
-					ElasticsearchAutoConfiguration.class);
-			this.context.refresh();
-			List<DiscoveryNode> connectedNodes = this.context
-					.getBean(TransportClient.class).connectedNodes();
-			assertThat(connectedNodes).hasSize(1);
-		});
+		TestPropertyValues
+				.of("spring.data.elasticsearch.cluster-nodes:localhost:"
+						+ elasticsearch.getMappedTransportPort(),
+						"spring.data.elasticsearch.cluster-name:docker-cluster")
+				.applyTo(this.context);
+		this.context.register(PropertyPlaceholderAutoConfiguration.class,
+				ElasticsearchAutoConfiguration.class);
+		this.context.refresh();
+		List<DiscoveryNode> connectedNodes = this.context.getBean(TransportClient.class)
+				.connectedNodes();
+		assertThat(connectedNodes).hasSize(1);
 	}
 
 	@Configuration

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfigurationTests.java

@@ -17,10 +17,12 @@
 package org.springframework.boot.autoconfigure.data.elasticsearch;
 
 import org.junit.After;
-import org.junit.jupiter.api.Test;
+import org.junit.ClassRule;
+import org.junit.Test;
 
 import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
 import org.springframework.boot.test.util.TestPropertyValues;
+import org.springframework.boot.testsupport.testcontainers.ElasticsearchContainer;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
 import org.springframework.data.elasticsearch.core.convert.ElasticsearchConverter;
@@ -36,6 +38,9 @@
  */
 public class ElasticsearchDataAutoConfigurationTests {
 
+	@ClassRule
+	public static ElasticsearchContainer elasticsearch = new ElasticsearchContainer();
+
 	private AnnotationConfigApplicationContext context;
 
 	@After
@@ -55,55 +60,46 @@ public void templateBackOffWithNoClient() {
 	@Test
 	public void templateExists() {
 		this.context = new AnnotationConfigApplicationContext();
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			TestPropertyValues
-					.of("spring.data.elasticsearch.properties.path.data:target/data",
-							"spring.data.elasticsearch.properties.path.logs:target/logs",
-							"spring.data.elasticsearch.cluster-nodes:localhost:"
-									+ node.getTcpPort())
-					.applyTo(this.context);
-			this.context.register(PropertyPlaceholderAutoConfiguration.class,
-					ElasticsearchAutoConfiguration.class,
-					ElasticsearchDataAutoConfiguration.class);
-			this.context.refresh();
-			assertHasSingleBean(ElasticsearchTemplate.class);
-		});
+		TestPropertyValues
+				.of("spring.data.elasticsearch.cluster-nodes:localhost:"
+						+ elasticsearch.getMappedTransportPort(),
+						"spring.data.elasticsearch.cluster-name:docker-cluster")
+				.applyTo(this.context);
+		this.context.register(PropertyPlaceholderAutoConfiguration.class,
+				ElasticsearchAutoConfiguration.class,
+				ElasticsearchDataAutoConfiguration.class);
+		this.context.refresh();
+		assertHasSingleBean(ElasticsearchTemplate.class);
 	}
 
 	@Test
 	public void mappingContextExists() {
 		this.context = new AnnotationConfigApplicationContext();
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			TestPropertyValues
-					.of("spring.data.elasticsearch.properties.path.data:target/data",
-							"spring.data.elasticsearch.properties.path.logs:target/logs",
-							"spring.data.elasticsearch.cluster-nodes:localhost:"
-									+ node.getTcpPort())
-					.applyTo(this.context);
-			this.context.register(PropertyPlaceholderAutoConfiguration.class,
-					ElasticsearchAutoConfiguration.class,
-					ElasticsearchDataAutoConfiguration.class);
-			this.context.refresh();
-			assertHasSingleBean(SimpleElasticsearchMappingContext.class);
-		});
+		TestPropertyValues
+				.of("spring.data.elasticsearch.cluster-nodes:localhost:"
+						+ elasticsearch.getMappedTransportPort(),
+						"spring.data.elasticsearch.cluster-name:docker-cluster")
+				.applyTo(this.context);
+		this.context.register(PropertyPlaceholderAutoConfiguration.class,
+				ElasticsearchAutoConfiguration.class,
+				ElasticsearchDataAutoConfiguration.class);
+		this.context.refresh();
+		assertHasSingleBean(SimpleElasticsearchMappingContext.class);
 	}
 
 	@Test
 	public void converterExists() {
 		this.context = new AnnotationConfigApplicationContext();
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			TestPropertyValues
-					.of("spring.data.elasticsearch.properties.path.data:target/data",
-							"spring.data.elasticsearch.properties.path.logs:target/logs",
-							"spring.data.elasticsearch.cluster-nodes:localhost:"
-									+ node.getTcpPort())
-					.applyTo(this.context);
-			this.context.register(PropertyPlaceholderAutoConfiguration.class,
-					ElasticsearchAutoConfiguration.class,
-					ElasticsearchDataAutoConfiguration.class);
-			this.context.refresh();
-			assertHasSingleBean(ElasticsearchConverter.class);
-		});
+		TestPropertyValues
+				.of("spring.data.elasticsearch.cluster-nodes:localhost:"
+						+ elasticsearch.getMappedTransportPort(),
+						"spring.data.elasticsearch.cluster-name:docker-cluster")
+				.applyTo(this.context);
+		this.context.register(PropertyPlaceholderAutoConfiguration.class,
+				ElasticsearchAutoConfiguration.class,
+				ElasticsearchDataAutoConfiguration.class);
+		this.context.refresh();
+		assertHasSingleBean(ElasticsearchConverter.class);
 	}
 
 	private void assertHasSingleBean(Class<?> type) {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchDataAutoConfigurationTests.java

@@ -18,19 +18,17 @@
 
 import org.elasticsearch.client.Client;
 import org.junit.After;
+import org.junit.ClassRule;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
 import org.springframework.boot.autoconfigure.TestAutoConfigurationPackage;
 import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
 import org.springframework.boot.autoconfigure.data.alt.elasticsearch.CityElasticsearchDbRepository;
-import org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchNodeTemplate.ElasticsearchNode;
 import org.springframework.boot.autoconfigure.data.elasticsearch.city.City;
 import org.springframework.boot.autoconfigure.data.elasticsearch.city.CityRepository;
 import org.springframework.boot.autoconfigure.data.empty.EmptyDataPackage;
 import org.springframework.boot.test.util.TestPropertyValues;
-import org.springframework.boot.testsupport.runner.classpath.ClassPathOverrides;
-import org.springframework.boot.testsupport.runner.classpath.ModifiedClassPathRunner;
+import org.springframework.boot.testsupport.testcontainers.ElasticsearchContainer;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
@@ -43,10 +41,11 @@
  * @author Phillip Webb
  * @author Andy Wilkinson
  */
-@RunWith(ModifiedClassPathRunner.class)
-@ClassPathOverrides("org.apache.logging.log4j:log4j-core:2.10.0")
 public class ElasticsearchRepositoriesAutoConfigurationTests {
 
+	@ClassRule
+	public static ElasticsearchContainer elasticsearch = new ElasticsearchContainer();
+
 	private AnnotationConfigApplicationContext context;
 
 	@After
@@ -56,46 +55,39 @@ public void close() {
 
 	@Test
 	public void testDefaultRepositoryConfiguration() {
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			load(TestConfiguration.class, node);
-			assertThat(this.context.getBean(CityRepository.class)).isNotNull();
-			assertThat(this.context.getBean(Client.class)).isNotNull();
-		});
+		load(TestConfiguration.class);
+		assertThat(this.context.getBean(CityRepository.class)).isNotNull();
+		assertThat(this.context.getBean(Client.class)).isNotNull();
 
 	}
 
 	@Test
 	public void testNoRepositoryConfiguration() {
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			load(EmptyConfiguration.class, node);
-			assertThat(this.context.getBean(Client.class)).isNotNull();
-		});
+		load(EmptyConfiguration.class);
+		assertThat(this.context.getBean(Client.class)).isNotNull();
 	}
 
 	@Test
 	public void doesNotTriggerDefaultRepositoryDetectionIfCustomized() {
-		new ElasticsearchNodeTemplate().doWithNode((node) -> {
-			load(CustomizedConfiguration.class, node);
-			assertThat(this.context.getBean(CityElasticsearchDbRepository.class))
-					.isNotNull();
-		});
+		load(CustomizedConfiguration.class);
+		assertThat(this.context.getBean(CityElasticsearchDbRepository.class)).isNotNull();
 	}
 
-	private void load(Class<?> config, ElasticsearchNode node) {
+	private void load(Class<?> config) {
 		this.context = new AnnotationConfigApplicationContext();
-		addElasticsearchProperties(this.context, node);
+		addElasticsearchProperties(this.context);
 		this.context.register(config, ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,
 				ElasticsearchDataAutoConfiguration.class,
 				PropertyPlaceholderAutoConfiguration.class);
 		this.context.refresh();
 	}
 
-	private void addElasticsearchProperties(AnnotationConfigApplicationContext context,
-			ElasticsearchNode node) {
-		TestPropertyValues.of("spring.data.elasticsearch.properties.path.home:target",
-				"spring.data.elasticsearch.cluster-nodes:localhost:" + node.getTcpPort())
-				.applyTo(context);
+	private void addElasticsearchProperties(AnnotationConfigApplicationContext context) {
+		TestPropertyValues.of(
+				"spring.data.elasticsearch.cluster-nodes:localhost:"
+						+ elasticsearch.getMappedTransportPort(),
+				"spring.data.elasticsearch.cluster-name:docker-cluster").applyTo(context);
 	}
 
 	@Configuration

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchNodeTemplate.java

@@ -27,18 +27,14 @@
 import io.searchbox.client.http.JestHttpClient;
 import io.searchbox.core.Get;
 import io.searchbox.core.Index;
-import org.junit.After;
-import org.junit.Before;
+import org.junit.ClassRule;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
 import org.springframework.beans.factory.BeanCreationException;
 import org.springframework.boot.autoconfigure.AutoConfigurations;
-import org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchNodeTemplate;
 import org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
-import org.springframework.boot.testsupport.runner.classpath.ClassPathOverrides;
-import org.springframework.boot.testsupport.runner.classpath.ModifiedClassPathRunner;
+import org.springframework.boot.testsupport.testcontainers.ElasticsearchContainer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
@@ -52,24 +48,15 @@
  * @author Stephane Nicoll
  * @author Andy Wilkinson
  */
-@RunWith(ModifiedClassPathRunner.class)
-@ClassPathOverrides("org.apache.logging.log4j:log4j-core:2.10.0")
 public class JestAutoConfigurationTests {
 
+	@ClassRule
+	public static ElasticsearchContainer elasticsearch = new ElasticsearchContainer();
+
 	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(GsonAutoConfiguration.class,
 					JestAutoConfiguration.class));
 
-	@Before
-	public void preventElasticsearchFromConfiguringNetty() {
-		System.setProperty("es.set.netty.runtime.available.processors", "false");
-	}
-
-	@After
-	public void close() {
-		System.clearProperty("es.set.netty.runtime.available.processors");
-	}
-
 	@Test
 	public void jestClientOnLocalhostByDefault() {
 		this.contextRunner
@@ -122,9 +109,9 @@ public void proxyHostWithoutPort() {
 
 	@Test
 	public void jestCanCommunicateWithElasticsearchInstance() {
-		new ElasticsearchNodeTemplate().doWithNode((node) -> this.contextRunner
+		this.contextRunner
 				.withPropertyValues("spring.elasticsearch.jest.uris=http://localhost:"
-						+ node.getHttpPort())
+						+ elasticsearch.getMappedPort())
 				.run((context) -> {
 					JestClient client = context.getBean(JestClient.class);
 					Map<String, String> source = new HashMap<>();
@@ -136,7 +123,7 @@ public void jestCanCommunicateWithElasticsearchInstance() {
 					Get getRequest = new Get.Builder("foo", "1").build();
 					assertThat(execute(client, getRequest).getResponseCode())
 							.isEqualTo(200);
-				}));
+				});
 	}
 
 	private JestResult execute(JestClient client, Action<? extends JestResult> action) {

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchRepositoriesAutoConfigurationTests.java

@@ -25,11 +25,12 @@
 import org.elasticsearch.client.RequestOptions;
 import org.elasticsearch.client.RestClient;
 import org.elasticsearch.client.RestHighLevelClient;
-import org.junit.jupiter.api.Test;
+import org.junit.ClassRule;
+import org.junit.Test;
 
 import org.springframework.boot.autoconfigure.AutoConfigurations;
-import org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchNodeTemplate;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.boot.testsupport.testcontainers.ElasticsearchContainer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.util.ReflectionUtils;
@@ -44,6 +45,9 @@
  */
 public class RestClientAutoConfigurationTests {
 
+	@ClassRule
+	public static ElasticsearchContainer elasticsearch = new ElasticsearchContainer();
+
 	private ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(RestClientAutoConfiguration.class));
 
@@ -77,9 +81,9 @@ public void configureWhenBuilderCustomizerShouldApply() {
 
 	@Test
 	public void restClientCanQueryElasticsearchNode() {
-		new ElasticsearchNodeTemplate().doWithNode((node) -> this.contextRunner
+		this.contextRunner
 				.withPropertyValues("spring.elasticsearch.rest.uris=http://localhost:"
-						+ node.getHttpPort())
+						+ RestClientAutoConfigurationTests.elasticsearch.getMappedPort())
 				.run((context) -> {
 					RestHighLevelClient client = context
 							.getBean(RestHighLevelClient.class);
@@ -92,7 +96,7 @@ public void restClientCanQueryElasticsearchNode() {
 					GetRequest getRequest = new GetRequest("foo", "bar", "1");
 					assertThat(client.get(getRequest, RequestOptions.DEFAULT).isExists())
 							.isTrue();
-				}));
+				});
 	}
 
 	@Configuration

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/jest/JestAutoConfigurationTests.java

@@ -77,6 +77,10 @@ public int getMappedPort() {
 		return this.container.getMappedPort(this.port);
 	}
 
+	protected GenericContainer<?> getContainer() {
+		return this.container;
+	}
+
 	private static class SkipStatement extends Statement {
 
 		@Override

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/rest/RestClientAutoConfigurationTests.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      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.
+ */
+
+package org.springframework.boot.testsupport.testcontainers;
+
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/**
+ * A {@link Container} for Elasticsearch.
+ *
+ * @author Andy Wilkinson
+ */
+public class ElasticsearchContainer extends Container {
+
+	public ElasticsearchContainer() {
+		super("elasticsearch:6.4.3", 9200, (container) -> container.addExposedPort(9300));
+	}
+
+	public int getMappedTransportPort() {
+		return getContainer().getMappedPort(9300);
+	}
+
+	@Override
+	public Statement apply(Statement base, Description description) {
+		Statement wrapped = super.apply(base, description);
+		return new Statement() {
+
+			@Override
+			public void evaluate() throws Throwable {
+				System.setProperty("es.set.netty.runtime.available.processors", "false");
+				try {
+					wrapped.evaluate();
+				}
+				finally {
+					System.clearProperty("es.set.netty.runtime.available.processors");
+				}
+			}
+
+		};
+
+	}
+
+}