com.cloudhopper.mq.broker

Interface RemoteQueueTransferListener

All Known Implementing Classes:

LocalToRemoteQueueProcessor

public interface RemoteQueueTransferListener

Interface to handle notifications during a transfer that a RemoteBroker should be removed. This is usually useful when multiple RemoteBrokers are available on a RemoteQueue and we should remove them from the list.

Author:

joelauer

Method Summary

Methods

Modifier and Type	Method and Description
void	notifyQueueOnRemoteBrokerIsNoLongerAvailable(String remoteBrokerUrl, String queueName) Callback when only a specific queue is now no longer available on a Remote Broker.
void	notifyRemoteBrokerIsNoLongerAvailable(String remoteBrokerUrl, String errorMessage) Callback when an entire remote broker is not available.

Method Detail

notifyRemoteBrokerIsNoLongerAvailable

void notifyRemoteBrokerIsNoLongerAvailable(String remoteBrokerUrl,
                                         String errorMessage)

Callback when an entire remote broker is not available. This is only triggered when something like an IOException occurs and that means that likely every RemoteQueue is now no longer available on this system. NOTE: The action to take when this callback occurs is to call updateRemoteBrokerState with a state of NOT_AVAILABLE on the DistributedQueueState.

Parameters:

remoteBrokerUrl - The url of the RemoteBroker to mark as Not Available

notifyQueueOnRemoteBrokerIsNoLongerAvailable

void notifyQueueOnRemoteBrokerIsNoLongerAvailable(String remoteBrokerUrl,
                                                String queueName)

Callback when only a specific queue is now no longer available on a Remote Broker. This is triggered when something like a transfer response of "No Local Queue" is received from a Remote Broker. This error indicates that the Remote Broker is still "up", but that just this particular queue is now no longer available. NOTE: The action to take when this callback occurs is to call updateRemoteQueueWeight with a "zero weight" on the DistributedQueueState.

Parameters:

remoteBrokerUrl - The url of the RemoteBroker to mark as Not Available

queueName - The name of the queue