Configure Spring Data Couchbase on a cluster host address - couchbase

Question

My data people gave me the http://127.0.0.1:8091/pools url to connect to our Couchbase server and I've been told the pools suffix is the address to all the nodes in the cluster.
I'm using Spring 4.2.0.RELEASE with spring-data-couchbase 2.0.0.M1 against Couchbase 2.5.1 enterprise edition (build-1083)
Now, if I add the above url as is into the getBootstrapHosts list:
#Override
protected List<String> getBootstrapHosts() {
return Collections.singletonList(couchbaseProperties.getHost());
}
I get a number format exception on the 8091/pools value.
But when using the http://127.0.0.1:8091 url I get an invalid password exception.
I reckon the first url is to be used, but not in the way I went for.
There is probably a method I should override in the AbstractCouchbaseConfiguration class, but looking at the source code didn't really enlighten me.
Here is the Couchbase configuration class.
#Configuration
#EnableCouchbaseRepositories(basePackages = { "com.thalasoft.data.couchbase.repository" })
#ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { "com.thalasoft.data.couchbase.config" })
#EnableTransactionManagement
public class CouchbaseConfiguration extends AbstractCouchbaseConfiguration {
private static Logger logger = LoggerFactory.getLogger(CouchbaseConfiguration.class);
#Autowired
private CouchbaseProperties couchbaseProperties;
#Override
protected List<String> getBootstrapHosts() {
return Collections.singletonList(couchbaseProperties.getHost());
}
#Override
protected String getBucketName() {
return couchbaseProperties.getBucketName();
}
#Override
protected String getBucketPassword() {
return couchbaseProperties.getBucketPassword();
}
#Bean
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
#Bean
public LocalValidatorFactoryBean validator() {
return new LocalValidatorFactoryBean();
}
#Bean
public ValidatingCouchbaseEventListener validationEventListener() {
return new ValidatingCouchbaseEventListener(validator());
}
}

Answer 1

The fact that your database administrators gave you 127.0.0.1 as the adress to connect to seem strange, but indeed could be valid if one node of the cluster is running colocated with the client code...
This url-based syntax was the one used for the 1.4.x generation of SDK, and configuration is indeed a bit different in 2.x (reflecting the evolution of the Couchbase SDK between 1.4.x and 2.x): you just need to provide the hostname or ip of each node to bootstrap from, in a list.
You should try with just "127.0.0.1". It is possible also that you need to specify a bucket name and/or a password (ask your administrator). The defaults used by Spring Data Couchbase for each is "default" and "" (empty password), but you can override the getBucketName() and getBucketPassword() methods from AbsctractCouchbaseConfiguration to change that.
PS: the Spring Data Couchbase documentation is available here