Java tutorial
/* * jPOS Project [http://jpos.org] * Copyright (C) 2000-2016 Alejandro P. Revilla * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.jpos.q2.iso; import org.jdom2.Element; import org.jpos.core.Configurable; import org.jpos.iso.ISOUtil; import org.jpos.q2.QBeanSupport; import org.jpos.q2.QFactory; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; /** * DailyTask Adaptor * * @author Alejandro Revilla * @version $Revision$ $Date$ */ public class DailyTaskAdaptor extends QBeanSupport implements Runnable { Runnable task; Thread thisThread = null; public DailyTaskAdaptor() { super(); } protected void initService() throws Exception { QFactory factory = getServer().getFactory(); Element e = getPersist(); task = (Runnable) factory.newInstance(e.getChildTextTrim("class")); factory.setLogger(task, e); } protected void startService() throws Exception { if (task instanceof Configurable) { Element e = getPersist(); QFactory factory = getServer().getFactory(); ((Configurable) task).setConfiguration(factory.getConfiguration(e)); } (thisThread = new Thread(this)).start(); } protected void stopService() throws Exception { if (thisThread != null) thisThread.interrupt(); } public void run() { while (running()) { waitUntilStartTime(); if (running()) { Thread taskThread = new Thread(task); taskThread.setDaemon(true); taskThread.start(); ISOUtil.sleep(1000); } } } public Date getWhen() { String s = cfg.get("start") + ":00:00"; // NOPMD int hh = Integer.parseInt(s.substring(0, 2)); int mm = Integer.parseInt(s.substring(3, 5)); int ss = Integer.parseInt(s.substring(6, 8)); Date now = new Date(); Calendar cal = new GregorianCalendar(); cal.setTime(now); cal.set(Calendar.HOUR_OF_DAY, hh); cal.set(Calendar.MINUTE, mm); cal.set(Calendar.SECOND, ss); Date when = cal.getTime(); if (when.before(now)) when = new Date(when.getTime() + 24 * 60 * 60 * 1000); return when; } protected void waitUntilStartTime() { Date when = getWhen(); while (running()) { Date now = new GregorianCalendar().getTime(); if (now.before(when)) { long sleepTime = when.getTime() - now.getTime(); if (sleepTime <= 0) { ISOUtil.sleep(1000); continue; } getLog().info("sleeping", sleepTime / 1000 + " secs until " + when.toString()); try { Thread.sleep(sleepTime); } catch (InterruptedException e) { when = getWhen(); } } else break; } } }