com.cloudhopper.mq.broker

Interface DistributedQueueStateListener

All Known Implementing Classes:

DistributedQueueManager

public interface DistributedQueueStateListener

Method Summary

Methods

Modifier and Type	Method and Description
void	notifyRemoteBrokerAdded(RemoteBrokerInfo bi) Triggered when a RemoteBroker was added to the DistributedQueueState.
void	notifyRemoteBrokerRemoved(RemoteBrokerInfo bi) Triggered when a RemoteBroker was remove from the DistributedQueueState.
void	notifyRemoteBrokerStateChanged(RemoteBrokerInfo bi, int state) Triggered when the state of a RemoteBroker has changed in the DistributedQueueState.
void	notifyRemoteQueueAdded(RemoteQueueInfo qi) Triggered when a RemoteQueue was added to the DistributedQueueState.
void	notifyRemoteQueueAttributesChanged(RemoteQueueInfo qi) Triggered when just the internal attributes of a RemoteQueue has changed, but not enough to affect the overall state of the RemoteQueue.
void	notifyRemoteQueueRemoved(RemoteQueueInfo qi) Triggered when a RemoteQueue was removed from the DistributedQueueState.
void	notifyRemoteQueueStateChanged(RemoteQueueInfo qi, int state) Triggered when the state of a RemoteQueue has changed in the DistributedQueueState.

Method Detail

notifyRemoteBrokerAdded

void notifyRemoteBrokerAdded(RemoteBrokerInfo bi)

Triggered when a RemoteBroker was added to the DistributedQueueState.

Parameters:

bi - The RemoteBroker that was added

notifyRemoteBrokerRemoved

void notifyRemoteBrokerRemoved(RemoteBrokerInfo bi)

Triggered when a RemoteBroker was remove from the DistributedQueueState.

Parameters:

bi - The RemoteBroker that was removed

notifyRemoteBrokerStateChanged

void notifyRemoteBrokerStateChanged(RemoteBrokerInfo bi,
                                  int state)

Triggered when the state of a RemoteBroker has changed in the DistributedQueueState. This event will triggered AFTER any RemoteQueues this RemoteBroker was associated with are triggered first. For example, if the RemoteBroker goes down (not available) and its the only RemoteBroker that can transfer items to a RemoteQueue, then the RemoteQueueStateChanged event will occur BEFORE this method is triggered.

Parameters:

bi - The RemoteBroker whose state changed

notifyRemoteQueueAdded

void notifyRemoteQueueAdded(RemoteQueueInfo qi)

Triggered when a RemoteQueue was added to the DistributedQueueState. If the RemoteQueue was added as a result of state change (such as it becoming available), then this event should happen BEFORE the notifyRemoteQueueStateChanged event occurs.

Parameters:

qi - The RemoteQueue that was added

notifyRemoteQueueRemoved

void notifyRemoteQueueRemoved(RemoteQueueInfo qi)

Triggered when a RemoteQueue was removed from the DistributedQueueState.

Parameters:

qi - The RemoteQueue that was removed

notifyRemoteQueueStateChanged

void notifyRemoteQueueStateChanged(RemoteQueueInfo qi,
                                 int state)

Triggered when the state of a RemoteQueue has changed in the DistributedQueueState. This is potentially the most important event to watch for in order to start/stop distributors on a particular local queue.

Parameters:

qi - The RemoteQueue whose state changed

notifyRemoteQueueAttributesChanged

void notifyRemoteQueueAttributesChanged(RemoteQueueInfo qi)

Triggered when just the internal attributes of a RemoteQueue has changed, but not enough to affect the overall state of the RemoteQueue. For example, if there was already a RemoteBroker on the RemoteQueue, but a second one came online. That would trigger this event, but not cause a state change.

Parameters:

qi - The RemoteQueue whose attributes changed