code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * 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 io.cloudslang.score.events;
  
  import java.util.Set;
  
  /**
   * User:
   * Date: 09/01/14
   * Time: 12:06
   */
  public interface EventBus {
  
      /**
       * register listener for event types
       * @param eventHandler  - the handler of the events
       * @param eventTypes - the types of events you want to listen to
       */
  	void subscribe(ScoreEventListener eventHandler, Set<String> eventTypes);
  
      /**
       * remove the given handler
       * @param eventHandler - the listener to remove
       */
  	void unsubscribe(ScoreEventListener eventHandler);
  
      /**
       * dispatch the given events, meaning relevant handlers will be called based on the event types
       * @param eventWrappers one or more score event to dispatch
       */
  	void dispatch(ScoreEvent... eventWrappers) throws InterruptedException;
  }
  