001/* 002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * Nuxeo - initial API and implementation 016 * 017 * $Id$ 018 * 019 */ 020package org.nuxeo.ecm.platform.pictures.tiles.service; 021 022import org.apache.commons.logging.Log; 023import org.apache.commons.logging.LogFactory; 024 025/** 026 * Task for GC dedicated Thread 027 * 028 * @author tiry 029 */ 030public class GCTask implements Runnable { 031 032 public static boolean GCEnabled = false; 033 034 private static String GCINTERVAL_KEY = "GCInterval"; 035 036 private static long GCInterval = 0; 037 038 private static final Log log = LogFactory.getLog(GCTask.class); 039 040 public static long getGCIntervalInMinutes() { 041 if (GCInterval == 0) { 042 GCInterval = Long.parseLong(PictureTilingComponent.getEnvValue(GCINTERVAL_KEY, Long.toString(10))); 043 log.debug("GC interval set to " + GCInterval); 044 } 045 return GCInterval; 046 } 047 048 public static void setGCIntervalInMinutes(long interval) { 049 GCInterval = interval; 050 } 051 052 public void run() { 053 log.debug("starting GC thread"); 054 while (GCEnabled) { 055 PictureTilingCacheGCManager.gcIfNeeded(); 056 try { 057 long gcInterval = getGCIntervalInMinutes(); 058 059 if (gcInterval < 0) { 060 // for tests 061 log.debug("GC sleeps for " + (-gcInterval)); 062 Thread.sleep(-gcInterval); 063 } else { 064 log.debug("GC sleeps for " + (gcInterval * 60 * 1000)); 065 // GC Interval is stored in minutes 066 Thread.sleep(gcInterval * 60 * 1000); 067 } 068 } catch (InterruptedException e) { 069 GCEnabled = false; 070 log.info("GCThread bruttaly interupted"); 071 } 072 } 073 } 074 075}