net.tomp2p.synchronization

Class SyncRPC

java.lang.Object

net.tomp2p.rpc.DispatchHandler

net.tomp2p.synchronization.SyncRPC

public class SyncRPC
extends DispatchHandler

This Synchronization RPC is used to synchronize data between peers by transferring only changes.

Author:

Thomas Bocek, Maxat Pernebayev

Field Summary

Fields

Modifier and Type	Field and Description
static byte	INFO_COMMAND
static byte	SYNC_COMMAND

Constructor Summary

Constructors

Constructor and Description
SyncRPC(PeerBean peerBean, ConnectionBean connectionBean, int blockSize, StorageLayer storageLayer, ReplicationListener replicationListener) Constructor that registers this RPC with the message handler.

Method Summary

Methods

Modifier and Type	Method and Description
void	handleResponse(Message message, PeerConnection peerConnection, boolean sign, Responder responder)
FutureResponse	infoMessage(PeerAddress remotePeer, SyncBuilder synchronizationBuilder, ChannelCreator channelCreator) Sends info message that asks whether the data is present at replica peer or not.
FutureResponse	syncMessage(PeerAddress remotePeer, SyncBuilder synchronizationBuilder, ChannelCreator channelCreator) Sends sync message that transfers the changed parts of data to a replica peer.

Methods inherited from class net.tomp2p.rpc.DispatchHandler

connectionBean, createMessage, createResponseMessage, createResponseMessage, forwardMessage, peerBean, register, register, sign

Methods inherited from class java.lang.Object

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

Field Detail

INFO_COMMAND

public static final byte INFO_COMMAND

SYNC_COMMAND

public static final byte SYNC_COMMAND

Constructor Detail

SyncRPC

public SyncRPC(PeerBean peerBean,
       ConnectionBean connectionBean,
       int blockSize,
       StorageLayer storageLayer,
       ReplicationListener replicationListener)

Constructor that registers this RPC with the message handler.

Parameters:

peerBean - The peer bean that contains data that is unique for each peer

connectionBean - The connection bean that is unique per connection (multiple peers can share a single connection)

storageLayer -

Method Detail

infoMessage

public FutureResponse infoMessage(PeerAddress remotePeer,
                         SyncBuilder synchronizationBuilder,
                         ChannelCreator channelCreator)

Sends info message that asks whether the data is present at replica peer or not. If it is present whether it has changed. This is an RPC.

Parameters:

remotePeer - The remote peer to send this request

synchronizationBuilder - Used for keeping parameters that are sent

channelCreator - The channel creator that creates connections

Returns:

The future response to keep track of future events

syncMessage

public FutureResponse syncMessage(PeerAddress remotePeer,
                         SyncBuilder synchronizationBuilder,
                         ChannelCreator channelCreator)
                           throws IOException

Sends sync message that transfers the changed parts of data to a replica peer. This is an RPC

Parameters:

remotePeer - The remote peer to send this message

synchronizationBuilder - Used for keeping parameters that are sent

channelCreator - The channel creator that creates connections

Returns:

The future response to keep track of future events

Throws:

IOException

handleResponse

public void handleResponse(Message message,
                  PeerConnection peerConnection,
                  boolean sign,
                  Responder responder)
                    throws Exception

Specified by:

handleResponse in class DispatchHandler

Throws:

Exception