periodicalinterval.java

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/*************************************************************************
 *                                                                       *
 *  EJBCA: The OpenSource Certificate Authority                          *
 *                                                                       *
 *  This software is free software; you can redistribute it and/or       *
 *  modify it under the terms of the GNU Lesser General Public           *
 *  License as published by the Free Software Foundation; either         *
 *  version 2.1 of the License, or any later version.                    *
 *                                                                       *
 *  See terms of license at gnu.org.                                     *
 *                                                                       *
 *************************************************************************/
package org.ejbca.core.model.services.intervals;

import javax.ejb.EJBException;

import org.apache.log4j.Logger;
import org.ejbca.core.model.InternalResources;
import org.ejbca.core.model.services.BaseInterval;

/**
 * Class implementing a peridical IInterval for monitoring services
 * 
 * The main method is getTimeToExecution
 * 
 * @author Philip Vendil 2006 sep 27
 *
 * @version $Id: PeriodicalInterval.java,v 1.4 2006/12/13 10:35:10 anatom Exp $
 */
public class PeriodicalInterval extends BaseInterval {
	
	private static final Logger log = Logger.getLogger(PeriodicalInterval.class);
    /** Internal localization of logs and errors */
    private static final InternalResources intres = InternalResources.getInstance();

	public static final String PROP_UNIT  = "interval.periodical.unit";
	public static final String PROP_VALUE = "interval.periodical.value";

	public static final String UNIT_SECONDS = "SECONDS";
	public static final String UNIT_MINUTES = "MINUTES";
	public static final String UNIT_HOURS = "HOURS";
	public static final String UNIT_DAYS = "DAYS";
	
	public static final int UNITVAL_SECONDS = 1;
	public static final int UNITVAL_MINUTES = 60;
	public static final int UNITVAL_HOURS = 3600;
	public static final int UNITVAL_DAYS = 86400;

	public static final String[] AVAILABLE_UNITS = {UNIT_SECONDS, UNIT_MINUTES, UNIT_HOURS, UNIT_DAYS};
	public static final int[] AVAILABLE_UNITSVALUES = {UNITVAL_SECONDS, UNITVAL_MINUTES, UNITVAL_HOURS, UNITVAL_DAYS};
	
	
	private transient int interval = 0;
	
	/**
	 * Methods that reads the interval from the configured properties
	 * and transforms it into seconds
	 * 
	 * 
	 * @see org.ejbca.core.model.services.IInterval#getTimeToExecution()
	 */
	public long getTimeToExecution() {
		log.debug(">PeriodicalInterval.getTimeToExecution()");
		if(interval == 0){
			String unit = properties.getProperty(PROP_UNIT);
			if(unit == null){				
				String msg = intres.getLocalizedMessage("services.interval.errorconfig", serviceName, "UNIT");
				throw new EJBException(msg);
			}
			int unitval = 0;
			for(int i=0;i<AVAILABLE_UNITS.length;i++){
				if(AVAILABLE_UNITS[i].equalsIgnoreCase(unit)){
					unitval = AVAILABLE_UNITSVALUES[i];
					break;
				}
			}
			if(unitval == 0){				
				String msg = intres.getLocalizedMessage("services.interval.errorconfig", serviceName, "UNIT");
				throw new EJBException(msg);
			}
						
		    String value =  properties.getProperty(PROP_VALUE);
		    int intvalue = 0;
		    try{
		      intvalue = Integer.parseInt(value);
		    }catch(NumberFormatException e){
				String msg = intres.getLocalizedMessage("services.interval.errorconfig", serviceName, "VALUE");
		    	throw new EJBException(msg);
		    }
			
			if(intvalue == 0){
				String msg = intres.getLocalizedMessage("services.interval.errorconfig", serviceName, "UNIT");
				throw new EJBException(msg);
			}
			interval = intvalue * unitval;
		}
		log.debug("PeriodicalInterval.getTimeToExecution() : " + interval);
		return interval;
	}

}