galileo.dht

Class SHA1Partitioner

java.lang.Object

galileo.dht.Partitioner<java.lang.String>

galileo.dht.SHA1Partitioner

public class SHA1Partitioner
extends Partitioner<java.lang.String>

Example Partitioner that creates a classic, balanced DHT based on file names.

Author:

malensek

Field Summary

Fields inherited from class galileo.dht.Partitioner

network, storageNode

Constructor Summary

Constructors

Constructor and Description
SHA1Partitioner(StorageNode storageNode, NetworkInfo network)

Method Summary

Modifier and Type	Method and Description
NodeInfo	locateData(java.lang.String fileName) Determines where a file belongs in the system based on its properties.

Methods inherited from class java.lang.Object

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

Constructor Detail

SHA1Partitioner

public SHA1Partitioner(StorageNode storageNode,
                       NetworkInfo network)
                throws PartitionException,
                       HashException,
                       HashTopologyException

Throws:

PartitionException

HashException

HashTopologyException

Method Detail

locateData

public NodeInfo locateData(java.lang.String fileName)
                    throws HashException,
                           PartitionException

Description copied from class: Partitioner

Determines where a file belongs in the system based on its properties. This function could implement a simple hash-based partitioning scheme, something more dynamic, utilize the feature graph, etc. Ultimately, this function will determine the DHT hierarchy.

Specified by:

locateData in class Partitioner<java.lang.String>

Parameters:

fileName - data to find the location in the network for.

Throws:

HashException

PartitionException