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/*-
* ============LICENSE_START=======================================================
* openECOMP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights
* reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.listener;
import java.util.Map;
/**
* A controller is responsible for creating a listener for each ListenerProperties object that is passed in to it on
* instantiation. The controller will create a thread pool that will contain all of the listener threads so no listener
* can crash the controller.
*
*/
public interface Controller {
/**
* Creates a new thread in the thread pool for an implementation of the {@see #Listener} class set in the
* ListenerProperties. This thread is run immediately after it is created.
*/
public void start();
/**
* Stops each of the listeners known by this controller. Takes an optional parameter that indicates the the listener
* should stop immediately rather than waiting for all threads to complete.
*
* @param stopNow
* Determines what method the listeners should use to shutdown. If true, listeners will use the stopNow()
* method. Otherwise they will use the stop() method.
*/
public void stop(boolean stopNow);
/**
* @return A Map of ListenerProperties and the Listener object that is running in the controllers thread pool.
*/
public Map<ListenerProperties, Listener> getListeners();
}
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