org.lsst.ccs.bus

Interface ProvidesDisconnectionInformation

All Known Implementing Classes:

JGroupsBusMessagingLayer, MockBusMessagingLayer

public interface ProvidesDisconnectionInformation

Author:

emarin

Method Summary

Modifier and Type	Method and Description
BusMembershipListener	getBusMembershipListener(Bus bus)
List<String>	getConnectedNames(Bus bus) Tries to return the name of a list of agents connected to a bus.
void	setMembershipListener(BusMembershipListener listener, Bus... buses) optional operation.

Method Detail

setMembershipListener

void setMembershipListener(BusMembershipListener listener,
                           Bus... buses)

optional operation. registers a listener for knowing about the agents that connect/disconnect on a bus. This method is more useful if called before any agent registration (for instance duplicate agent names will be reported to these listeners)

Parameters:

buses - if empty register to all buses

listener - can be null if we want to deregister a previous listener

Throws:

UnsupportedOperationException - if not supported

getConnectedNames

List<String> getConnectedNames(Bus bus)

Tries to return the name of a list of agents connected to a bus.

Parameters:

bus -

Returns:

a (possibly empty) list of agent's names connected to a bus if the current calling code is not connected to this bus the list will be empty

getBusMembershipListener

BusMembershipListener getBusMembershipListener(Bus bus)