Spring Data MongoDB Replica Set UserCredentials Config? [duplicate] - mongodb

Question

I am using the below Spring configuration in order to connect to mongoDB
<bean id="mongoTemplate" class="org.springframework.data.document.mongodb.MongoTemplate">
<constructor-arg name="mongo" ref="mongo"/>
<constructor-arg name="databaseName" value="${mongodb.dbname}"/>
</bean>
<bean class="com.mongodb.MongoURI" id="mongoUri">
<constructor-arg value="${mongodb.url}" />
</bean>
<bean class="com.mongodb.Mongo" id="mongo">
<constructor-arg ref="mongoUri" />
</bean>
where mongo.url=mongodb://<user>:<password>#<host>:27017
However I'm getting an authetication error.
My understanding was that MongoUI can take a URL in the above format.
I know that mongoTemplate can accept userCredentials object however I would need to extract them from the URL first and i'm not sure how to do that in the configuration.
Any idea how can I change my config above to suppot this assuming mongo.url format cannot be changed?

Answer 1

found the solution using Spring Expression Language
<bean id="mongoTemplate" class="org.springframework.data.document.mongodb.MongoTemplate">
<constructor-arg name="mongo" ref="mongo"/>
<constructor-arg name="databaseName" value="${mongodb.dbname}"/>
<constructor-arg name="userCredentials" ref="mongoCredentials"/>
</bean>
<bean id="mongoCredentials" class="org.springframework.data.authentication.UserCredentials">
<property name="username" value="#{mongoURI.username}" />
<property name="password" value="#{new java.lang.String(mongoURI.password)}" />
</bean>
<bean class="com.mongodb.MongoURI" id="mongoURI">
<constructor-arg value="${mongodb.url}" />
</bean>
<bean class="com.mongodb.Mongo" id="mongo">
<constructor-arg ref="mongoURI" />
</bean>

Answer 2

If you want to add authntication using java config
#Configuration
#EnableMongoRepositories("path.to.your.repository")
public class MongoConfig extends AbstractMongoConfiguration
{
#Value("${mongodb.name}")
private String dbName;
#Value("${mongodb.host}")
private String host;
#Value("${mongodb.port}")
private Integer port;
#Value("${mongodb.username}")
private String userName;
#Value("${mongodb.password}")
private String password;
#Override
protected String getDatabaseName()
{
return this.dbName;
}
#Override
public Mongo mongo() throws Exception
{
return new MongoClient(this.host, this.port);
}
#Override
#Bean
public SimpleMongoDbFactory mongoDbFactory() throws Exception
{
return new SimpleMongoDbFactory(mongo(), getDatabaseName());
}
#Override
#Bean
public MongoTemplate mongoTemplate() throws Exception
{
final UserCredentials userCredentials = new UserCredentials(this.userName, this.password);
final MongoTemplate mongoTemplate = new MongoTemplate(mongo(), getDatabaseName(), userCredentials);
mongoTemplate.setWriteConcern(WriteConcern.SAFE);
return mongoTemplate;
}
}

Answer 3

To update #Lealem Admassu's answer for java config, in Mongo 3 they changed the API, and now it is recommended to use mongo's MongoCredentials instead of UserCredentials.
Here there is a simple example of how to get a MongoClient:
http://docs.spring.io/spring-data/mongodb/docs/current/reference/html/#mongo.mongo-3.authentication
The next code can be done modular, but more or less this works for me (I needed a MongoTemplate):
public MongoTemplate getMongoTemplate(String host, int port,
String authenticationDB,
String database,
String user, char[] password)
throws UnknownHostException {
return new MongoTemplate(
new SimpleMongoDbFactory(
new MongoClient(
new ServerAddress(host, port),
Collections.singletonList(
MongoCredential.createCredential(
user,
authenticationDB,
password
)
)
),
database
)
);
}