Polish contribution

Closes gh-5511

Author: snicoll

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/autoconfigure/HealthIndicatorAutoConfigurationTests.java

@@ -393,6 +393,7 @@ public void notJmsHealthIndicator() {
 	@Test
 	public void elasticSearchHealthIndicator() {
 		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.data.elasticsearch.properties.path.home:target",
 				"management.health.diskspace.enabled:false");
 		this.context.register(ElasticsearchAutoConfiguration.class,
 				ManagementServerProperties.class, HealthIndicatorAutoConfiguration.class);
@@ -409,6 +410,7 @@ public void elasticSearchHealthIndicator() {
 	public void notElasticSearchHealthIndicator() {
 		EnvironmentTestUtils.addEnvironment(this.context,
 				"management.health.elasticsearch.enabled:false",
+				"spring.data.elasticsearch.properties.path.home:target",
 				"management.health.diskspace.enabled:false");
 		this.context.register(ElasticsearchAutoConfiguration.class,
 				ManagementServerProperties.class, HealthIndicatorAutoConfiguration.class);

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchAutoConfiguration.java

@@ -16,7 +16,6 @@
 
 package org.springframework.boot.autoconfigure.data.elasticsearch;
 
-import java.io.File;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -63,7 +62,7 @@ public class ElasticsearchAutoConfiguration implements DisposableBean {
 		Map<String, String> defaults = new LinkedHashMap<String, String>();
 		defaults.put("http.enabled", String.valueOf(false));
 		defaults.put("node.local", String.valueOf(true));
-		defaults.put("path.home", new File(System.getProperty("java.io.tmpdir"), "elastic-home").getAbsolutePath());
+		defaults.put("path.home", System.getProperty("user.dir"));
 		DEFAULTS = Collections.unmodifiableMap(defaults);
 	}
 

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

@@ -56,7 +56,8 @@ public void close() {
 	public void createNodeClientWithDefaults() {
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context,
-				"spring.data.elasticsearch.properties.foo.bar:baz");
+				"spring.data.elasticsearch.properties.foo.bar:baz",
+				"spring.data.elasticsearch.properties.path.home:target");
 		this.context.register(PropertyPlaceholderAutoConfiguration.class,
 				ElasticsearchAutoConfiguration.class);
 		this.context.refresh();
@@ -72,6 +73,7 @@ public void createNodeClientWithOverrides() {
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context,
 				"spring.data.elasticsearch.properties.foo.bar:baz",
+				"spring.data.elasticsearch.properties.path.home:target",
 				"spring.data.elasticsearch.properties.node.local:false",
 				"spring.data.elasticsearch.properties.node.data:true",
 				"spring.data.elasticsearch.properties.http.enabled:true");
@@ -104,7 +106,8 @@ public void createTransportClient() throws Exception {
 		// a port and check the exception
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context,
-				"spring.data.elasticsearch.cluster-nodes:localhost");
+				"spring.data.elasticsearch.cluster-nodes:localhost",
+				"spring.data.elasticsearch.properties.path.home:target");
 		this.context.register(PropertyPlaceholderAutoConfiguration.class,
 				ElasticsearchAutoConfiguration.class);
 		this.thrown.expect(BeanCreationException.class);

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

@@ -26,6 +26,7 @@
 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.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
@@ -49,6 +50,7 @@ public void close() {
 	@Test
 	public void testDefaultRepositoryConfiguration() throws Exception {
 		this.context = new AnnotationConfigApplicationContext();
+		addElasticsearchProperties(this.context);
 		this.context.register(TestConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,
@@ -62,6 +64,7 @@ public void testDefaultRepositoryConfiguration() throws Exception {
 	@Test
 	public void testNoRepositoryConfiguration() throws Exception {
 		this.context = new AnnotationConfigApplicationContext();
+		addElasticsearchProperties(this.context);
 		this.context.register(EmptyConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,
@@ -74,6 +77,7 @@ public void testNoRepositoryConfiguration() throws Exception {
 	@Test
 	public void doesNotTriggerDefaultRepositoryDetectionIfCustomized() {
 		this.context = new AnnotationConfigApplicationContext();
+		addElasticsearchProperties(this.context);
 		this.context.register(CustomizedConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,
@@ -83,6 +87,11 @@ public void doesNotTriggerDefaultRepositoryDetectionIfCustomized() {
 		assertThat(this.context.getBean(CityElasticsearchDbRepository.class)).isNotNull();
 	}
 
+	private void addElasticsearchProperties(AnnotationConfigApplicationContext context) {
+		EnvironmentTestUtils.addEnvironment(context,
+				"spring.data.elasticsearch.properties.path.home:target");
+	}
+
 	@Configuration
 	@TestAutoConfigurationPackage(City.class)
 	protected static class TestConfiguration {

spring-boot-dependencies/pom.xml

@@ -105,6 +105,7 @@
 		<jetty.version>9.2.15.v20160210</jetty.version>
 		<jetty-jsp.version>2.2.0.v201112011158</jetty-jsp.version>
 		<jmustache.version>1.12</jmustache.version>
+		<jna.version>4.2.2</jna.version>
 		<joda-time.version>2.9.2</joda-time.version>
 		<jolokia.version>1.3.3</jolokia.version>
 		<jooq.version>3.7.2</jooq.version>
@@ -951,6 +952,11 @@
 				<artifactId>mysql-connector-java</artifactId>
 				<version>${mysql.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>net.java.dev.jna</groupId>
+				<artifactId>jna</artifactId>
+				<version>${jna.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>net.sf.ehcache</groupId>
 				<artifactId>ehcache</artifactId>

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -3214,11 +3214,24 @@ dependencies in a convenient way.
 [[boot-features-connecting-to-elasticsearch]]
 ==== Connecting to Elasticsearch
 You can inject an auto-configured `ElasticsearchTemplate` or Elasticsearch `Client`
-instance as you would any other Spring Bean. By default the instance will attempt to
-connect to a local in-memory server (a `NodeClient` in Elasticsearch terms), but you can
-switch to a remote server (i.e. a `TransportClient`) by setting
+instance as you would any other Spring Bean. By default the instance will embed a
+local in-memory server (a `Node` in ElasticSearch terms) and use the current working
+directory as the home directory for the server. In this setup, the first thing to do
+is to tell ElasticSearch were to store its files:
+
+[source,properties,indent=0]
+----
+	spring.data.elasticsearch.properties.path.home=/foo/bar
+----
+
+Alternatively, you can switch to a remote server (i.e. a `TransportClient`) by setting
 `spring.data.elasticsearch.cluster-nodes` to a comma-separated '`host:port`' list.
 
+[source,properties,indent=0]
+----
+	spring.data.elasticsearch.cluster-nodes=localhost:9300
+----
+
 [source,java,indent=0]
 ----
 	@Component

spring-boot-samples/spring-boot-sample-data-elasticsearch/pom.xml

@@ -26,6 +26,13 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
 		</dependency>
+
+		<dependency>
+			<groupId>net.java.dev.jna</groupId>
+			<artifactId>jna</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

spring-boot-samples/spring-boot-sample-data-elasticsearch/src/main/resources/application.properties

@@ -0,0 +1,5 @@
+#
+# Home directory of the embedded elastic instance. Default to the
+# current working directory.
+#
+spring.data.elasticsearch.properties.path.home=target/elastic