alma.acs.nc

Interface AcsEventPublisher.EventProcessingHandler<U>

Enclosing interface:

AcsEventPublisher<T>

public static interface AcsEventPublisher.EventProcessingHandler<U>

Handler for optional callbacks to the event publishing client, which allows notifying the client of success or failure with publishing the event(s).

This handler makes sense only in conjunction with using an event queue in the publisher, because without a queue the user notices directly the successful or failed sending of an event by either a normal return or an exception from method AcsEventPublisher.publishEvent(Object).

The user is responsible to implement the handler methods. The handler methods must return quickly and should not throw exceptions.

See Also:

AcsEventPublisher#registerEventProcessingCallback(EventProcessingHandler)

Method Summary

Modifier and Type	Method and Description
void	eventDropped(U event) Notification that an event was dropped because of failures and a full queue.
void	eventSent(U event) Notification that an event was sent.
void	eventStoredInQueue(U event) Notification that an event was stored in a local queue after some problem occurred when trying to send the event immediately.

Method Detail

eventSent

void eventSent(U event)

Notification that an event was sent. Depending on the underlying pub-sub framework and its configuration, this may or may not imply that the subscriber(s) will also receive the event.

Parameters:

event - The event that was sent.

eventStoredInQueue

void eventStoredInQueue(U event)

Notification that an event was stored in a local queue after some problem occurred when trying to send the event immediately.

Parameters:

event - The event that was stored in the queue.

eventDropped

void eventDropped(U event)

Notification that an event was dropped because of failures and a full queue.

Parameters:

event - The event that was dropped.