Downgrade to Jackson 2.7.6 and verify Elasticsearch’s compatibility

Closes gh-6508

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

@@ -16,20 +16,30 @@
 
 package org.springframework.boot.autoconfigure.elasticsearch.jest;
 
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
 import com.google.gson.Gson;
 import io.searchbox.client.JestClient;
 import io.searchbox.client.http.JestHttpClient;
+import io.searchbox.core.Index;
+import io.searchbox.core.Search;
+import org.elasticsearch.index.query.QueryBuilders;
+import org.elasticsearch.search.builder.SearchSourceBuilder;
 import org.junit.After;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
 import org.springframework.beans.factory.BeanCreationException;
+import org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration;
 import org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration;
 import org.springframework.boot.test.util.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.util.SocketUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.mock;
@@ -38,6 +48,7 @@ import static org.mockito.Mockito.mock;
  * Tests for {@link JestAutoConfiguration}.
  *
  * @author Stephane Nicoll
+ * @author Andy Wilkinson
  */
 public class JestAutoConfigurationTests {
 
@@ -61,7 +72,8 @@ public class JestAutoConfigurationTests {
 
 	@Test
 	public void customJestClient() {
-		load(CustomJestClient.class, "spring.elasticsearch.jest.uris=http://localhost:9200");
+		load(CustomJestClient.class,
+				"spring.elasticsearch.jest.uris=http://localhost:9200");
 		assertThat(this.context.getBeansOfType(JestClient.class)).hasSize(1);
 	}
 
@@ -80,6 +92,25 @@ public class JestAutoConfigurationTests {
 				"spring.elasticsearch.jest.proxy.host=proxy.example.com");
 	}
 
+	@Test
+	public void jestCanCommunicateWithElasticsearchInstance() throws IOException {
+		int port = SocketUtils.findAvailableTcpPort();
+		load(ElasticsearchAutoConfiguration.class,
+				"spring.data.elasticsearch.properties.path.home:target/elastic",
+				"spring.data.elasticsearch.properties.http.enabled:true",
+				"spring.data.elasticsearch.properties.http.port:" + port,
+				"spring.elasticsearch.jest.uris:http://localhost:" + port);
+		JestClient client = this.context.getBean(JestClient.class);
+		Map<String, String> source = new HashMap<String, String>();
+		source.put("a", "alpha");
+		source.put("b", "bravo");
+		Index index = new Index.Builder(source).index("foo").type("bar").build();
+		client.execute(index);
+		SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
+		searchSourceBuilder.query(QueryBuilders.matchQuery("a", "alpha"));
+		assertThat(client.execute(new Search.Builder(searchSourceBuilder.toString())
+				.addIndex("foo").build()).getResponseCode()).isEqualTo(200);
+	}
 
 	private void load(String... environment) {
 		load(null, environment);

spring-boot-dependencies/pom.xml

@@ -93,7 +93,7 @@
 		<httpclient.version>4.5.2</httpclient.version>
 		<httpcore.version>4.4.5</httpcore.version>
 		<infinispan.version>8.2.2.Final</infinispan.version>
-		<jackson.version>2.8.1</jackson.version>
+		<jackson.version>2.7.6</jackson.version>
 		<janino.version>2.7.8</janino.version>
 		<javassist.version>3.20.0-GA</javassist.version> <!-- Same as Hibernate -->
 		<javax-cache.version>1.0.0</javax-cache.version>