com.hazelcast.spi

Interface EventService

public interface EventService

Component responsible for handling events like topic events or map.listener events. The events are divided into topics.

Method Summary

Modifier and Type	Method and Description
void	deregisterAllListeners(String serviceName, String topic) Deregisters all listeners belonging to the given service and topic.
boolean	deregisterListener(String serviceName, String topic, Object id) Deregisters a listener with the given registration ID.
void	executeEventCallback(Runnable callback) Executes an event callback on a random event thread.
int	getEventQueueCapacity() Returns the queue capacity per event thread.
int	getEventQueueSize() Returns the current total event queue size.
int	getEventThreadCount() Returns the event thread count.
Collection<EventRegistration>	getRegistrations(String serviceName, String topic) Returns all registrations belonging to the given service and topic.
EventRegistration[]	getRegistrationsAsArray(String serviceName, String topic) Returns all registrations belonging to the given service and topic as an array.
boolean	hasEventRegistration(String serviceName, String topic) Returns true if a listener is registered with the specified service name and topic.
void	publishEvent(String serviceName, Collection<EventRegistration> registrations, Object event, int orderKey) Publishes an event for multiple event registrations.
void	publishEvent(String serviceName, EventRegistration registration, Object event, int orderKey) Publishes an event for a specific event registration.
void	publishEvent(String serviceName, String topic, Object event, int orderKey) Publishes an event for all event registrations belonging to the specified service name and topic.
void	publishRemoteEvent(String serviceName, Collection<EventRegistration> registrations, Object event, int orderKey) Publishes an event for multiple event registrations, excluding local ones.
EventRegistration	registerListener(String serviceName, String topic, EventFilter filter, Object listener) Registers a listener on all cluster nodes with an event filter.
EventRegistration	registerListener(String serviceName, String topic, Object listener) Registers a listener on all cluster nodes.
EventRegistration	registerLocalListener(String serviceName, String topic, EventFilter filter, Object listener) Registers a local only listener with an event filter.
EventRegistration	registerLocalListener(String serviceName, String topic, Object listener) Registers a local only listener.

Method Detail

getEventThreadCount

int getEventThreadCount()

Returns the event thread count.

Returns:

the event thread count

See Also:

GroupProperty.EVENT_THREAD_COUNT

getEventQueueCapacity

int getEventQueueCapacity()

Returns the queue capacity per event thread.

Returns:

the queue capacity per event thread

See Also:

GroupProperty.EVENT_QUEUE_CAPACITY

getEventQueueSize

int getEventQueueSize()

Returns the current total event queue size.

Returns:

the current total event queue size

registerLocalListener

EventRegistration registerLocalListener(String serviceName,
                                        String topic,
                                        Object listener)

Registers a local only listener.

Parameters:

serviceName - service name

topic - topic name

listener - listener instance

Returns:

event registration

registerLocalListener

EventRegistration registerLocalListener(String serviceName,
                                        String topic,
                                        EventFilter filter,
                                        Object listener)

Registers a local only listener with an event filter.

Parameters:

serviceName - service name

topic - topic name

filter - event filter

listener - listener instance

Returns:

event registration

registerListener

EventRegistration registerListener(String serviceName,
                                   String topic,
                                   Object listener)

Registers a listener on all cluster nodes.

Parameters:

serviceName - service name

topic - topic name

listener - listener instance

Returns:

event registration

registerListener

EventRegistration registerListener(String serviceName,
                                   String topic,
                                   EventFilter filter,
                                   Object listener)

Registers a listener on all cluster nodes with an event filter.

Parameters:

serviceName - service name

topic - topic name

filter - event filter

listener - listener instance

Returns:

event registration

deregisterListener

boolean deregisterListener(String serviceName,
                           String topic,
                           Object id)

Deregisters a listener with the given registration ID.

Parameters:

serviceName - service name

topic - topic name

id - registration ID

Returns:

true if listener is deregistered successfully, false otherwise

See Also:

EventRegistration.getId(), registerListener(String, String, Object), registerLocalListener(String, String, Object)

deregisterAllListeners

void deregisterAllListeners(String serviceName,
                            String topic)

Deregisters all listeners belonging to the given service and topic.

Parameters:

serviceName - service name

topic - topic name

getRegistrations

Collection<EventRegistration> getRegistrations(String serviceName,
                                               String topic)

Returns all registrations belonging to the given service and topic.

Parameters:

serviceName - service name

topic - topic name

Returns:

registrations

getRegistrationsAsArray

EventRegistration[] getRegistrationsAsArray(String serviceName,
                                            String topic)

Returns all registrations belonging to the given service and topic as an array.

Parameters:

serviceName - service name

topic - topic name

Returns:

registrations array

hasEventRegistration

boolean hasEventRegistration(String serviceName,
                             String topic)

Returns true if a listener is registered with the specified service name and topic.

Parameters:

serviceName - service name

topic - topic name

Returns:

true if a listener is registered with specified service name and topic, false otherwise.

publishEvent

void publishEvent(String serviceName,
                  String topic,
                  Object event,
                  int orderKey)

Publishes an event for all event registrations belonging to the specified service name and topic. All events with the same orderKey are ordered, otherwise the order is not preserved.

NOTE : The order may not be preserved in case the event needs to be republished (e.g. when the registration is not on this node and the event has to be retransmitted)

Parameters:

serviceName - service name

topic - topic name

event - event object

orderKey - the order key for this event. All events with the same order key are ordered.

publishEvent

void publishEvent(String serviceName,
                  EventRegistration registration,
                  Object event,
                  int orderKey)

Publishes an event for a specific event registration. All events with the same orderKey are ordered, otherwise the order is not preserved.

NOTE : The order may not be preserved in case the event needs to be republished (e.g. when the registration is not on this node and the event has to be retransmitted)

Parameters:

serviceName - service name

registration - event registration

event - event object

orderKey - the order key for this event. All events with the same order key are ordered.

publishEvent

void publishEvent(String serviceName,
                  Collection<EventRegistration> registrations,
                  Object event,
                  int orderKey)

Publishes an event for multiple event registrations. All events with the same orderKey are ordered, otherwise the order is not preserved.

NOTE : The order may not be preserved in case the event needs to be republished (e.g. when the registration is not on this node and the event has to be retransmitted)

Parameters:

serviceName - service name

registrations - multiple event registrations

event - event object

orderKey - the order key for this event. All events with the same order key are ordered.

publishRemoteEvent

void publishRemoteEvent(String serviceName,
                        Collection<EventRegistration> registrations,
                        Object event,
                        int orderKey)

Publishes an event for multiple event registrations, excluding local ones. All events with the same orderKey are ordered, otherwise the order is not preserved.

NOTE : The order may not be preserved in case the event needs to be republished (e.g. when the registration is not on this node and the event has to be retransmitted)

Parameters:

serviceName - service name

registrations - multiple event registrations

event - event object

orderKey - the order key for this event. All events with the same order key are ordered.

executeEventCallback

void executeEventCallback(Runnable callback)

Executes an event callback on a random event thread.

If callback is an instance of StripedRunnable, then StripedRunnable.getKey() will be used as order key to pick event thread.

Parameters:

callback - the callback to execute on a random event thread

See Also:

StripedRunnable