net.tomp2p.p2p

Class Replication

java.lang.Object

net.tomp2p.p2p.Replication

All Implemented Interfaces:

PeerMapChangeListener

public class Replication
extends Object
implements PeerMapChangeListener

This class has 3 methods that are called from outside eventes: check, peerInsert, peerRemoved.

Constructor Summary

Constructors

Constructor and Description
Replication(StorageLayer backend, PeerAddress selfAddress, PeerMap peerMap, int replicationFactor) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	addResponsibilityListener(ResponsibilityListener responsibilityListener) Add responsibility listener.
int	getReplicationFactor()
boolean	isReplicationEnabled() Checks if the user enabled replication.
void	peerInserted(PeerAddress peerAddress, boolean verified) This method is called if a peer is added to the map.
void	peerRemoved(PeerAddress peerAddress, PeerStatatistic peerStatatistic) This method is called if a peer is removed from the map.
void	peerUpdated(PeerAddress peerAddress, PeerStatatistic peerStatatistic) This method is called if a peer is updated.
void	removeResponsibilityListener(ResponsibilityListener responsibilityListener) Remove a responsibility listener.
void	setReplicationFactor(int replicationFactor)
void	updateAndNotifyResponsibilities(Number160 locationKey) Update responsibilities.

Methods inherited from class java.lang.Object

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

Constructor Detail

Replication

public Replication(StorageLayer backend,
           PeerAddress selfAddress,
           PeerMap peerMap,
           int replicationFactor)

Constructor.

Parameters:

replicationStorage - The interface where we shore the replication responsibilities

selfAddress - My address to know for what my peer is responsible

peerMap - The map of my neighbors

replicationFactor - The replication factor

Method Detail

setReplicationFactor

public void setReplicationFactor(int replicationFactor)

Parameters:

replicationFactor - Set the replication factor

getReplicationFactor

public int getReplicationFactor()

Returns:

The replication factor.

isReplicationEnabled

public boolean isReplicationEnabled()

Checks if the user enabled replication.

Returns:

True if replication is enabled.

addResponsibilityListener

public void addResponsibilityListener(ResponsibilityListener responsibilityListener)

Add responsibility listener. If the first listener is added, replication is considered enabled.

Parameters:

responsibilityListener - The responsibility listener.

removeResponsibilityListener

public void removeResponsibilityListener(ResponsibilityListener responsibilityListener)

Remove a responsibility listener. If all responsibility listeners are removed, replication is considered disabled.

Parameters:

responsibilityListener - The responsibility listener.

updateAndNotifyResponsibilities

public void updateAndNotifyResponsibilities(Number160 locationKey)

Update responsibilities. This happens for a put / add.

Parameters:

locationKey - The location key.

peerInserted

public void peerInserted(PeerAddress peerAddress,
                boolean verified)

Description copied from interface: PeerMapChangeListener

This method is called if a peer is added to the map. The peer is always added to the non-verified map first.

Specified by:

peerInserted in interface PeerMapChangeListener

Parameters:

peerAddress - The peer that has been added.

verified - True if the peer was inserted in the verified map

peerRemoved

public void peerRemoved(PeerAddress peerAddress,
               PeerStatatistic peerStatatistic)

Description copied from interface: PeerMapChangeListener

This method is called if a peer is removed from the map.

Specified by:

peerRemoved in interface PeerMapChangeListener

Parameters:

peerAddress - The peer that has been removed and add to the cache.

peerStatatistic - Contains information statistical information

peerUpdated

public void peerUpdated(PeerAddress peerAddress,
               PeerStatatistic peerStatatistic)

Description copied from interface: PeerMapChangeListener

This method is called if a peer is updated.

Specified by:

peerUpdated in interface PeerMapChangeListener

Parameters:

peerAddress - The peer can change its IP and some statistical data

peerStatatistic - Contains information statistical information