/*************************************************************************
* Copyright 2009-2013 Eucalyptus Systems, Inc.
*
* This program 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; version 3 of the License.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
************************************************************************/
package com.eucalyptus.autoscaling.activities;
import org.apache.log4j.Logger;
import com.eucalyptus.autoscaling.common.AutoScalingBackend;
import com.eucalyptus.bootstrap.Bootstrap;
import com.eucalyptus.component.Topology;
import com.eucalyptus.event.ClockTick;
import com.eucalyptus.event.EventListener;
import com.eucalyptus.event.Listeners;
/**
*
*/
public class ZoneMonitorEventListener implements EventListener<ClockTick> {
private static Logger logger = Logger.getLogger( ZoneMonitorEventListener.class );
public static void register( ) {
Listeners.register( ClockTick.class, new ZoneMonitorEventListener() );
}
@Override
public void fireEvent( final ClockTick event ) {
if ( Topology.isEnabledLocally( AutoScalingBackend.class ) && Bootstrap.isOperational() ) {
try {
ZoneMonitor.checkZones();
} catch ( Exception ex ) {
logger.error( ex, ex );
}
}
}
}