Merge pull request #13559 from Dmitry Sergeyev

* gh-13559:
  Polish “Close Database to reset Connection's auto commit property”
  Close Database to reset Connection's auto commit property

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/LiquibaseEndpoint.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * 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.
@@ -38,6 +38,7 @@ import org.springframework.util.StringUtils;
  * {@link Endpoint} to expose liquibase info.
  *
  * @author Eddú Meléndez
+ * @author Dmitrii Sergeev
  * @since 1.3.0
  */
 @ConfigurationProperties(prefix = "endpoints.liquibase")
@@ -65,9 +66,9 @@ public class LiquibaseEndpoint extends AbstractEndpoint<List<LiquibaseReport>> {
 				DataSource dataSource = entry.getValue().getDataSource();
 				JdbcConnection connection = new JdbcConnection(
 						dataSource.getConnection());
+				Database database = null;
 				try {
-					Database database = factory
-							.findCorrectDatabaseImplementation(connection);
+					database = factory.findCorrectDatabaseImplementation(connection);
 					String defaultSchema = entry.getValue().getDefaultSchema();
 					if (StringUtils.hasText(defaultSchema)) {
 						database.setDefaultSchemaName(defaultSchema);
@@ -76,7 +77,12 @@ public class LiquibaseEndpoint extends AbstractEndpoint<List<LiquibaseReport>> {
 							service.queryDatabaseChangeLogTable(database)));
 				}
 				finally {
-					connection.close();
+					if (database != null) {
+						database.close();
+					}
+					else {
+						connection.close();
+					}
 				}
 			}
 			catch (Exception ex) {

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/LiquibaseEndpointTests.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * 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.
@@ -16,11 +16,15 @@
 
 package org.springframework.boot.actuate.endpoint;
 
+import java.sql.Connection;
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+
 import liquibase.integration.spring.SpringLiquibase;
 import org.junit.Test;
 
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
-import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfiguration;
 import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration;
 import org.springframework.boot.test.util.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
@@ -44,7 +48,20 @@ public class LiquibaseEndpointTests extends AbstractEndpointTests<LiquibaseEndpo
 
 	@Test
 	public void invoke() throws Exception {
+		DataSource dataSource = this.context.getBean(DataSource.class);
+		assertThat(getAutoCommit(dataSource)).isTrue();
 		assertThat(getEndpointBean().invoke()).hasSize(1);
+		assertThat(getAutoCommit(dataSource)).isTrue();
+	}
+
+	private boolean getAutoCommit(DataSource dataSource) throws SQLException {
+		Connection connection = dataSource.getConnection();
+		try {
+			return connection.getAutoCommit();
+		}
+		finally {
+			connection.close();
+		}
 	}
 
 	@Test
@@ -55,13 +72,13 @@ public class LiquibaseEndpointTests extends AbstractEndpointTests<LiquibaseEndpo
 				"liquibase.default-schema=CUSTOMSCHEMA",
 				"spring.datasource.generate-unique-name=true",
 				"spring.datasource.schema=classpath:/db/create-custom-schema.sql");
-		this.context.register(CustomSchemaConfig.class);
+		this.context.register(Config.class);
 		this.context.refresh();
 		assertThat(getEndpointBean().invoke()).hasSize(1);
 	}
 
 	@Configuration
-	@Import({ EmbeddedDataSourceConfiguration.class, LiquibaseAutoConfiguration.class })
+	@Import({ DataSourceAutoConfiguration.class, LiquibaseAutoConfiguration.class })
 	public static class Config {
 
 		private final SpringLiquibase liquibase;
@@ -77,21 +94,4 @@ public class LiquibaseEndpointTests extends AbstractEndpointTests<LiquibaseEndpo
 
 	}
 
-	@Configuration
-	@Import({ DataSourceAutoConfiguration.class, LiquibaseAutoConfiguration.class })
-	public static class CustomSchemaConfig {
-
-		private final SpringLiquibase liquibase;
-
-		public CustomSchemaConfig(SpringLiquibase liquibase) {
-			this.liquibase = liquibase;
-		}
-
-		@Bean
-		public LiquibaseEndpoint endpoint() {
-			return new LiquibaseEndpoint(this.liquibase);
-		}
-
-	}
-
 }