Improve MongoDataAutoConfiguration

Update MongoDataAutoConfiguration to provide easier configuration of
CustomConversions, the MappingMongoConverter, MongoMappingContext
and an authentication database.

Fixes gh-1619
Fixes gh-1730

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoDataAutoConfiguration.java

@@ -18,6 +18,8 @@ package org.springframework.boot.autoconfigure.mongo;
 
 import java.net.UnknownHostException;
 
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
@@ -28,9 +30,16 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.dao.DataAccessException;
 import org.springframework.dao.support.PersistenceExceptionTranslator;
+import org.springframework.data.authentication.UserCredentials;
 import org.springframework.data.mongodb.MongoDbFactory;
 import org.springframework.data.mongodb.core.MongoTemplate;
 import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
+import org.springframework.data.mongodb.core.convert.CustomConversions;
+import org.springframework.data.mongodb.core.convert.DbRefResolver;
+import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
+import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
+import org.springframework.data.mongodb.core.convert.MongoConverter;
+import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
 import org.springframework.data.mongodb.gridfs.GridFsTemplate;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -50,6 +59,7 @@ import com.mongodb.Mongo;
  * @author Dave Syer
  * @author Oliver Gierke
  * @author Josh Long
+ * @author Phillip Webb
  * @since 1.1.0
  */
 @Configuration
@@ -64,15 +74,45 @@ public class MongoDataAutoConfiguration {
 	@Bean
 	@ConditionalOnMissingBean
 	public MongoDbFactory mongoDbFactory(Mongo mongo) throws Exception {
-		String db = this.properties.getMongoClientDatabase();
-		return new SimpleMongoDbFactory(mongo, db);
+		String database = this.properties.getMongoClientDatabase();
+		String authDatabase = this.properties.getAuthenticationDatabase();
+		if (StringUtils.hasLength(authDatabase)) {
+			String username = this.properties.getUsername();
+			String password = new String(this.properties.getPassword());
+			UserCredentials credentials = new UserCredentials(username, password);
+			return new SimpleMongoDbFactory(mongo, database, credentials, authDatabase);
+		}
+		return new SimpleMongoDbFactory(mongo, database);
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public MongoTemplate mongoTemplate(MongoDbFactory mongoDbFactory,
+			MongoConverter converter) throws UnknownHostException {
+		return new MongoTemplate(mongoDbFactory, converter);
+	}
+
+	@Bean
+	@ConditionalOnMissingBean(MongoConverter.class)
+	public MappingMongoConverter mappingMongoConverter(MongoDbFactory factory,
+			MongoMappingContext context, BeanFactory beanFactory) {
+		DbRefResolver dbRefResolver = new DefaultDbRefResolver(factory);
+		MappingMongoConverter mappingConverter = new MappingMongoConverter(dbRefResolver,
+				context);
+		try {
+			mappingConverter.setCustomConversions(beanFactory
+					.getBean(CustomConversions.class));
+		}
+		catch (NoSuchBeanDefinitionException ex) {
+			// Ignore
+		}
+		return mappingConverter;
 	}
 
 	@Bean
 	@ConditionalOnMissingBean
-	public MongoTemplate mongoTemplate(MongoDbFactory mongoDbFactory)
-			throws UnknownHostException {
-		return new MongoTemplate(mongoDbFactory);
+	public MongoMappingContext mongoMappingContext() {
+		return new MongoMappingContext();
 	}
 
 	@Bean

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java

@@ -47,6 +47,8 @@ public class MongoProperties {
 
 	private String database;
 
+	private String authenticationDatabase;
+
 	private String gridFsDatabase;
 
 	private String username;
@@ -69,6 +71,14 @@ public class MongoProperties {
 		this.database = database;
 	}
 
+	public String getAuthenticationDatabase() {
+		return this.authenticationDatabase;
+	}
+
+	public void setAuthenticationDatabase(String authenticationDatabase) {
+		this.authenticationDatabase = authenticationDatabase;
+	}
+
 	public String getUsername() {
 		return this.username;
 	}

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mongo/MongoDataAutoConfigurationTests.java

@@ -16,15 +16,24 @@
 
 package org.springframework.boot.autoconfigure.mongo;
 
+import java.util.Arrays;
+
 import org.junit.After;
 import org.junit.Test;
 import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
 import org.springframework.boot.test.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
 import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.data.mongodb.core.convert.CustomConversions;
 import org.springframework.data.mongodb.gridfs.GridFsTemplate;
 
+import com.mongodb.Mongo;
+
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 /**
  * Tests for {@link MongoDataAutoConfiguration}.
@@ -61,4 +70,34 @@ public class MongoDataAutoConfigurationTests {
 		assertEquals(1, this.context.getBeanNamesForType(GridFsTemplate.class).length);
 	}
 
+	@Test
+	public void customConversions() throws Exception {
+		this.context = new AnnotationConfigApplicationContext();
+		this.context.register(CustomConversionsConfig.class);
+		this.context.register(PropertyPlaceholderAutoConfiguration.class,
+				MongoAutoConfiguration.class, MongoDataAutoConfiguration.class);
+		this.context.refresh();
+		MongoTemplate template = this.context.getBean(MongoTemplate.class);
+		assertTrue(template.getConverter().getConversionService()
+				.canConvert(Mongo.class, Boolean.class));
+	}
+
+	@Configuration
+	static class CustomConversionsConfig {
+
+		@Bean
+		public CustomConversions customConversions() {
+			return new CustomConversions(Arrays.asList(new MyConverter()));
+		}
+
+	}
+
+	private static class MyConverter implements Converter<Mongo, Boolean> {
+
+		@Override
+		public Boolean convert(Mongo source) {
+			return null;
+		}
+
+	}
 }

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -220,6 +220,11 @@ content into your application; rather pick only the properties that you need.
 	spring.data.mongodb.host= # the db host
 	spring.data.mongodb.port=27017 # the connection port (defaults to 27107)
 	spring.data.mongodb.uri=mongodb://localhost/test # connection URL
+	spring.data.mongodb.database=
+	spring.data.mongodb.authentication-database=
+	spring.data.mongodb.grid-fs-database=
+	spring.data.mongodb.username=
+	spring.data.mongodb.password=
 	spring.data.mongo.repositories.enabled=true # if spring data repository support is enabled
 
 	# JPA ({sc-spring-boot-autoconfigure}/orm/jpa/JpaBaseConfiguration.{sc-ext}[JpaBaseConfiguration], {sc-spring-boot-autoconfigure}/orm/jpa/HibernateJpaAutoConfiguration.{sc-ext}[HibernateJpaAutoConfiguration])

spring-boot-samples/spring-boot-sample-tomcat-jsp/.gitignore

+/target/

spring-boot-samples/spring-boot-sample-tomcat7-jsp/.gitignore

+/target/

spring-boot-samples/spring-boot-sample-traditional/.gitignore

+/target/

spring-boot-samples/spring-boot-sample-web-jsp/.gitignore

+/target/