org.jgroups.protocols.pbcast

Class STATE_TRANSFER

public class STATE_TRANSFER extends Protocol

New STATE_TRANSFER protocol based on PBCAST. Compared to the one in ./protocols, it doesn't need a QUEUE layer above it. A state request is sent to a chosen member (coordinator if null). That member makes a copy D of its current digest and asks the application for a copy of its current state S. Then the member returns both S and D to the requester. The requester first sets its digest to D and then returns the state to the application.

Author: Bela Ban

Nested Class Summary
static class	STATE_TRANSFER.StateHeader Wraps data for a state request/response.

Method Summary
void	down(Event evt)
double	getAverageStateSize()
String	getName() All protocol names have to be unique !
long	getNumberOfStateBytesSent()
int	getNumberOfStateRequests()
void	init()
Vector	requiredDownServices()
void	resetStats()
boolean	setProperties(Properties props)
void	start()
void	up(Event evt)