2 * Copyright 2015-present Open Networking Foundation
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package io.atomix.utils.event;
19 * Abstraction of a service capable of asynchronously notifying listeners.
21 public interface ListenerService<E extends Event, L extends EventListener<E>> {
24 * Adds the specified listener.
26 * @param listener listener to be added
28 void addListener(L listener);
31 * Removes the specified listener.
33 * @param listener listener to be removed
35 void removeListener(L listener);