SysUpTimeTracker.java

/*******************************************************************************
 * This file is part of OpenNMS(R).
 *
 * Copyright (C) 2008-2011 The OpenNMS Group, Inc.
 * OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * OpenNMS(R) 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenNMS(R).  If not, see:
 *      http://www.gnu.org/licenses/
 *
 * For more information contact:
 *     OpenNMS(R) Licensing <license@opennms.org>
 *     http://www.opennms.org/
 *     http://www.opennms.com/
 *******************************************************************************/

package org.opennms.netmgt.collectd;

import org.opennms.netmgt.snmp.SnmpInstId;
import org.opennms.netmgt.snmp.SnmpObjId;

/**
 * <p>SysUpTimeTracker class.</p>
 *
 * @author <a href="mailto:agalue@opennms.org">Alejandro Galue</a>
 * @version $Id: $
 */
public final class SysUpTimeTracker extends ObjIdMonitor {

    SysUpTimeTracker() {
        super(SnmpObjId.get(SnmpCollector.NODE_SYSUPTIME), SnmpInstId.INST_ZERO);
    }
    
    boolean isChanged(long savedSysUpTime) {
        return (savedSysUpTime != -1) && (getLongValue() < savedSysUpTime);
    }
}