| package org.onlab.onos.event; |
| |
| import java.util.Set; |
| |
| /** |
| * Abstraction of an event sink registry capable of tracking sinks based on |
| * their event class. |
| */ |
| public interface EventSinkRegistry { |
| |
| /** |
| * Adds the specified sink for the given event class. |
| * |
| * @param eventClass event class |
| * @param sink event sink |
| * @param <E> type of event |
| */ |
| <E extends Event> void addSink(Class<E> eventClass, EventSink<E> sink); |
| |
| /** |
| * Removes the sink associated with the given event class. |
| * |
| * @param eventClass event class |
| * @param <E> type of event |
| */ |
| <E extends Event> void removeSink(Class<E> eventClass); |
| |
| /** |
| * Returns the event sink associated with the specified event class. |
| * |
| * @param eventClass event class |
| * @param <E> type of event |
| * @return event sink or null if none found |
| */ |
| <E extends Event> EventSink<E> getSink(Class<E> eventClass); |
| |
| /** |
| * Returns the set of all event classes for which sinks are presently |
| * registered. |
| * |
| * @return set of event classes |
| */ |
| Set<Class<? extends Event>> getSinks(); |
| |
| } |