| /* |
| * Copyright (c) 2020 Kentyou. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Kentyou - initial API and implementation |
| */ |
| package org.eclipse.sensinact.gateway.util.stack; |
| |
| /** |
| * Abstract implementation of a {@link StackEnginetHandler} |
| * |
| * @author <a href="mailto:christophe.munilla@cea.fr">Christophe Munilla</a> |
| */ |
| public abstract class AbstractStackEngineHandler<E> implements StackEngineHandler<E> { |
| /** |
| * the {@link StackEngine} stacking the <code><E></code> |
| * typed elements |
| */ |
| protected final StackEngine<E, StackEngineHandler<E>> eventEngine; |
| |
| protected final Thread stackEngineThread; |
| |
| /** |
| * Constructor |
| */ |
| //TODO : allow restart by defining a separated start method |
| public AbstractStackEngineHandler() { |
| //instantiate the engine |
| this.eventEngine = new StackEngine<E, StackEngineHandler<E>>(this); |
| //start the engine |
| this.stackEngineThread = new Thread(eventEngine); |
| this.stackEngineThread.start(); |
| } |
| |
| /** |
| * Stops |
| */ |
| public void stop() { |
| //stop the engine |
| this.eventEngine.stop(); |
| } |
| |
| /** |
| * Stops |
| * |
| * @throws InterruptedException |
| */ |
| public void close() { |
| //wait for the stack emptiness for stopping |
| this.eventEngine.closeWhenEmpty(); |
| try { |
| this.stackEngineThread.join(); |
| |
| } catch (InterruptedException e) { |
| this.stackEngineThread.interrupt(); |
| } |
| } |
| } |