ensemble
Interface Callbacks

public interface Callbacks

Callbacks binds together the list of callbacks a group has to implement. Each event is the application "answer" to a specific event.

Method Summary

void	block() The group is blocked in preparation for a view-change.
void	exit() The group is leaving, and this is the final callback to the group.
void	flow_block(int rank, boolean onoff) Too many messages are being sent to a specific destination, or to the whole group.
void	heartbeat(double time) Every predetemined timeout, this callback is invoked with the current time.
void	install(ensemble.View view) A new view has been installed.
void	recv_cast(int origin, byte[] msg) A message has been received from the indicated origin.
void	recv_send(int origin, byte[] msg) A message has been received from the indicated origin.

Method Detail

install

public void install(ensemble.View view)

A new view has been installed.

exit

public void exit()

The group is leaving, and this is the final callback to the group.

recv_cast

public void recv_cast(int origin,
                      byte[] msg)

A message has been received from the indicated origin.

Parameters:

origin - message origin

msg - message body

recv_send

public void recv_send(int origin,
                      byte[] msg)

A message has been received from the indicated origin.

Parameters:

origin - message origin

msg - message body

flow_block

public void flow_block(int rank,
                       boolean onoff)

Too many messages are being sent to a specific destination, or to the whole group.

Parameters:

rank - the member to which we need to stop sending messages. (-1) for multicast traffic.

onoff - Should we stop (true), or continue (false)

block

public void block()

The group is blocked in preparation for a view-change. Stop sending messages until the install(ensemble.View) callback.

heartbeat

public void heartbeat(double time)

Every predetemined timeout, this callback is invoked with the current time.