119 lines
3.4 KiB
Java
119 lines
3.4 KiB
Java
/*
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* The MIT License
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* Copyright © 2014-2021 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.activeobject;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.LinkedBlockingQueue;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* ActiveCreature class is the base of the active object example.
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* @author Noam Greenshtain
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*
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*/
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public abstract class ActiveCreature {
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private static final Logger logger = LoggerFactory.getLogger(ActiveCreature.class.getName());
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private BlockingQueue<Runnable> requests;
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private String name;
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private Thread thread; // Thread of execution.
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private int status; // status of the thread of execution.
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/**
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* Constructor and initialization.
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*/
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protected ActiveCreature(String name) {
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this.name = name;
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this.status = 0;
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this.requests = new LinkedBlockingQueue<>();
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thread = new Thread(() -> {
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boolean infinite = true;
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while (infinite) {
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try {
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requests.take().run();
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} catch (InterruptedException e) {
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if (this.status != 0) {
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logger.error("Thread was interrupted. --> {}", e.getMessage());
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}
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infinite = false;
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Thread.currentThread().interrupt();
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}
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}
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});
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thread.start();
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}
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/**
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* Eats the porridge.
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* @throws InterruptedException due to firing a new Runnable.
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*/
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public void eat() throws InterruptedException {
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requests.put(() -> {
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logger.info("{} is eating!",name());
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logger.info("{} has finished eating!",name());
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});
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}
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/**
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* Roam in the wastelands.
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* @throws InterruptedException due to firing a new Runnable.
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*/
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public void roam() throws InterruptedException {
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requests.put(() ->
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logger.info("{} has started to roam in the wastelands.",name())
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);
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}
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/**
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* Returns the name of the creature.
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* @return the name of the creature.
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*/
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public String name() {
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return this.name;
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}
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/**
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* Kills the thread of execution.
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* @param status of the thread of execution. 0 == OK, the rest is logging an error.
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*/
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public void kill(int status) {
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this.status = status;
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this.thread.interrupt();
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}
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/**
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* Returns the status of the thread of execution.
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* @return the status of the thread of execution.
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*/
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public int getStatus() {
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return this.status;
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}
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}
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