/**
* Create a Cassandra Cluster instance given the connection details
*
* @param userName userName to connect to the cassandra
* @param password password to connect to cassandra
* @param clusterName Cluster name
* @param connectionString cassandra connection string
* @return Cluster instance
* @throws CassandraDataAccessException In case of and error in accessing database or data error
*/
public static Cluster createCluster(
String userName, String password, String clusterName, String connectionString)
throws CassandraDataAccessException {
if (userName == null || password == null) {
throw new CassandraDataAccessException(
"Can't create cluster with empty userName or Password");
}
if (clusterName == null) {
throw new CassandraDataAccessException("Can't create cluster with empty cluster name");
}
if (connectionString == null) {
throw new CassandraDataAccessException("Can't create cluster with empty connection string");
}
Map<String, String> credentials = new HashMap<String, String>();
credentials.put(USERNAME_KEY, userName);
credentials.put(PASSWORD_KEY, password);
CassandraHostConfigurator hostConfigurator = new CassandraHostConfigurator(connectionString);
hostConfigurator.setMaxActive(2000);
Cluster cluster = HFactory.getCluster(clusterName);
if (cluster == null) {
cluster = HFactory.createCluster(clusterName, hostConfigurator, credentials);
}
return cluster;
}
