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/*
* Copyright 2014 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.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();
}
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