Package org.apache.hadoop.hdfs.server.diskbalancer.connectors

Class JsonNodeConnector

java.lang.Object

org.apache.hadoop.hdfs.server.diskbalancer.connectors.JsonNodeConnector

All Implemented Interfaces:

ClusterConnector

public class JsonNodeConnector
extends Object
implements ClusterConnector

A connector that understands JSON data cluster models.

Constructor Summary

Constructors

Constructor	Description
JsonNodeConnector(URL clusterURI)	Constructs a JsonNodeConnector.

Method Summary

Modifier and Type	Method	Description
String	getConnectorInfo()	Returns info about the connector.
List<DiskBalancerDataNode>	getNodes()	getNodes function connects to a cluster definition file and returns nodes defined in that file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JsonNodeConnector

public JsonNodeConnector(URL clusterURI)

Constructs a JsonNodeConnector.

Parameters:

clusterURI - - A file URL that contains cluster information.

Method Details

getNodes

public List<DiskBalancerDataNode> getNodes()
                                    throws Exception

getNodes function connects to a cluster definition file and returns nodes defined in that file.

Specified by:

getNodes in interface ClusterConnector

Returns:

Array of DiskBalancerDataNodes

Throws:

Exception

getConnectorInfo

public String getConnectorInfo()

Returns info about the connector.

Specified by:

getConnectorInfo in interface ClusterConnector

Returns:

String.