org.objectweb.carol.cmi.ha
Interface ReplicationManager

All Known Implementing Classes:

JGReplicator

public interface ReplicationManager

Interface with the replication functionality

Author:

Francisco Perez-Sorrosal (fpsorrosal@no-spam@fi.upm.es), Alberto Paz-Jimenez (apaz@no-spam@fi.upm.es)

Method Summary

void	addModifiedBean(RequestId reqId, ObjectId bid, byte[] state) Correlates the changes made on a modified bean with a concrete client request
void	clear() Clears/removes the elements used by the concrete implementation
void	replicate(RequestId reqId, java.lang.Object response) Replicates the changes made on beans inside a concrete request context
void	replicateRemove(RequestId requestId) Replicates a remove method invocation over an EJB for a concrete objectId
ResponseInfo	restoreBeanChanges(RequestId requestId, java.lang.Object sfsw) Restores the state for a bean through its remote interface.

Method Detail

addModifiedBean

public void addModifiedBean(RequestId reqId,
                            ObjectId bid,
                            byte[] state)

Correlates the changes made on a modified bean with a concrete client request

Parameters:

reqId - the request id from the client

bid - the unique identifier for the instance

state - the state of the modified bean

replicate

public void replicate(RequestId reqId,
                      java.lang.Object response)
               throws ReplicationException

Replicates the changes made on beans inside a concrete request context

Parameters:

reqId - the request id

response - the response to return to the client

Throws:

ReplicationException

replicateRemove

public void replicateRemove(RequestId requestId)
                     throws ReplicationException

Replicates a remove method invocation over an EJB for a concrete objectId

Parameters:

requestId - identifies the requestId to remove in the backups

Throws:

ReplicationException

restoreBeanChanges

public ResponseInfo restoreBeanChanges(RequestId requestId,
                                       java.lang.Object sfsw)

Restores the state for a bean through its remote interface. This will probably made on a backup server when it has been selected to be the new primary.

Parameters:

requestId - the request id to access the state of the bean

sfsw - the sfsw that contains the instance where restore the state

Returns:

the last response held in HA service for that request, if exists

clear

public void clear()

Clears/removes the elements used by the concrete implementation