001/* ***** BEGIN LICENSE BLOCK *****
002 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
003 *
004 * The contents of this file are subject to the Mozilla Public License Version
005 * 1.1 (the "License"); you may not use this file except in compliance with
006 * the License. You may obtain a copy of the License at
007 * http://www.mozilla.org/MPL/
008 *
009 * Software distributed under the License is distributed on an "AS IS" basis,
010 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
011 * for the specific language governing rights and limitations under the
012 * License.
013 *
014 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
015 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
016 *
017 * The Initial Developer of the Original Code is
018 * Agfa Healthcare.
019 * Portions created by the Initial Developer are Copyright (C) 2012
020 * the Initial Developer. All Rights Reserved.
021 *
022 * Contributor(s):
023 * See @authors listed below
024 *
025 * Alternatively, the contents of this file may be used under the terms of
026 * either the GNU General Public License Version 2 or later (the "GPL"), or
027 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
028 * in which case the provisions of the GPL or the LGPL are applicable instead
029 * of those above. If you wish to allow use of your version of this file only
030 * under the terms of either the GPL or the LGPL, and not to allow others to
031 * use your version of this file under the terms of the MPL, indicate your
032 * decision by deleting the provisions above and replace them with the notice
033 * and other provisions required by the GPL or the LGPL. If you do not delete
034 * the provisions above, a recipient may use your version of this file under
035 * the terms of any one of the MPL, the GPL or the LGPL.
036 *
037 * ***** END LICENSE BLOCK ***** */
038
039package org.dcm4che3.net;
040
041import java.util.concurrent.ScheduledFuture;
042import java.util.concurrent.TimeUnit;
043
044import org.slf4j.Logger;
045import org.slf4j.LoggerFactory;
046
047/**
048 * Schedules an association.abort() on the given association
049 * using the scheduledExecutor assigned to the device of that association.
050 *
051 * @author Gunter Zeilinger <gunterze@gmail.com>
052 *
053 */
054public class Timeout implements Runnable {
055
056    public static Logger LOG = LoggerFactory.getLogger(Timeout.class);
057
058    private final Association as;
059    private final String expiredMsg;
060    private final String cancelMsg;
061    private final ScheduledFuture<?> future;
062    
063    private Timeout(Association as, String expiredMsg, String cancelMsg,
064            int timeout) {
065        this.as = as;
066        this.expiredMsg = expiredMsg;
067        this.cancelMsg = cancelMsg;
068        this.future = as.getDevice()
069                .schedule(this, timeout, TimeUnit.MILLISECONDS);
070    }
071
072    public static Timeout start(Association as, String startMsg,
073            String expiredMsg, String cancelMsg, int timeout) {
074        LOG.debug(startMsg, as, timeout);
075        return new Timeout(as, expiredMsg, cancelMsg, timeout);
076    }
077
078    /**
079     * Permanently cancels the potential effect of the timeout
080     */
081    public void stop() {
082        LOG.debug(cancelMsg, as);
083        future.cancel(false);
084    }
085
086    @Override
087    public void run() {
088        LOG.warn(expiredMsg, as);
089        as.abort();
090    }
091
092}