oogp2p.chord
Class ChordAdministrator

java.lang.Object
  oogp2p.chord.ChordAdministrator

public class ChordAdministrator

extends java.lang.Object

Author:

dtg Administrator for Chord. Performs various logic on chord node to ensure proper topology and functionality of Chord.

Field Summary

static java.lang.String	DEFAULT_FILE_DIR
private java.io.File	myFiles
private FixFingers	myFixFingers
private FixKeys	myFixKeys
private boolean	myJoined
(package private) ChordNode	myNode
private Stabilize	myStabilizer
private boolean	myValidFlag

Constructor Summary

ChordAdministrator()

Method Summary

void	addFiles() Adds the files from the users's shared directory to the chord ring
void	addKey(byte[] key, java.net.InetAddress nodeIP)
void	buildFingers()
void	buildFingers(ChordLocation n) Update finger table via searches by passed in node
void	createChordRing() creates a chordRing
void	fixKeys()
java.util.Iterator	getMapping(byte[] key)
ChordNode	getNode()
ChordLocation	getPredecessor()
java.net.InetAddress	getSuccessorIP() returns IP address of node's successor
boolean	isJoined()
boolean	isValid() whether or not the chord thing is valid
void	join(ChordLocation connectorLoc)
ChordLocation	nodeLocation() returns chord node location of self
void	notify(ChordLocation possibleNewPred)
void	printFingers()
void	printKeys()
void	refreshFingers() Refreshes the Fingers
void	setFinger(ChordLocation updatedLoc, int fingerPos)
void	setToInvalid()
void	setToValid()
void	stabilize(ChordLocation pofs)

Methods inherited from class java.lang.Object

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

Field Detail

myNode

ChordNode myNode

myJoined

private boolean myJoined

myValidFlag

private boolean myValidFlag

myStabilizer

private Stabilize myStabilizer

myFixFingers

private FixFingers myFixFingers

myFixKeys

private FixKeys myFixKeys

DEFAULT_FILE_DIR

public static java.lang.String DEFAULT_FILE_DIR

myFiles

private java.io.File myFiles

Constructor Detail

ChordAdministrator

public ChordAdministrator()

Method Detail

join

public void join(ChordLocation connectorLoc)

addFiles

public void addFiles()

Adds the files from the users's shared directory to the chord ring

setToInvalid

public void setToInvalid()

setToValid

public void setToValid()

isValid

public boolean isValid()

whether or not the chord thing is valid

createChordRing

public void createChordRing()

creates a chordRing

nodeLocation

public ChordLocation nodeLocation()

returns chord node location of self

getNode

public ChordNode getNode()

getSuccessorIP

public java.net.InetAddress getSuccessorIP()

returns IP address of node's successor

getPredecessor

public ChordLocation getPredecessor()

stabilize

public void stabilize(ChordLocation pofs)

Parameters:

pofs - -- my Successors' Predecessor Stabilizes myNode with respect to pofs

notify

public void notify(ChordLocation possibleNewPred)

buildFingers

public void buildFingers(ChordLocation n)

Update finger table via searches by passed in node

buildFingers

public void buildFingers()

isJoined

public boolean isJoined()

Returns:

setFinger

public void setFinger(ChordLocation updatedLoc,
                      int fingerPos)

Parameters:

fingerPos - finger position Updates the node in the Fingers at position fingerPos. (First makes sure that the node at fingerPos in Fingers has the same nodeID as the updatedNode

refreshFingers

public void refreshFingers()

Refreshes the Fingers

printFingers

public void printFingers()

addKey

public void addKey(byte[] key,
                   java.net.InetAddress nodeIP)

printKeys

public void printKeys()

getMapping

public java.util.Iterator getMapping(byte[] key)

Parameters:

key - returns the InetAddress what key maps to

fixKeys

public void fixKeys()