/*
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package org.hyperic.hq.galerts.strategies;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperic.hq.galerts.processor.FireReason;
import org.hyperic.hq.galerts.processor.Gtrigger;
import org.hyperic.hq.galerts.server.session.ExecutionReason;
import org.hyperic.hq.galerts.server.session.ExecutionStrategy;
import org.hyperic.hq.galerts.server.session.GalertDefPartition;
/**
* This strategy will fire only when all of the triggers are 'not fired'.
*/
public class NoneStrategy
implements ExecutionStrategy
{
private static final Log _log = LogFactory.getLog(NoneStrategy.class);
private GalertDefPartition _partition;
private String _defName;
private FireReason _lastReason;
private List _triggers;
private Map _firedMap; // Triggers -> Boolean
private int _numFired;
public void configure(GalertDefPartition partition, String defName,
List triggers)
{
_partition = partition;
_defName = defName;
_triggers = new ArrayList(triggers);
_numFired = _triggers.size();
_firedMap = new HashMap(_numFired);
reset();
_log.debug("Configure called: partition=" + partition +
" defName=" + defName + " triggers=" + triggers);
}
public GalertDefPartition getPartition() {
return _partition;
}
public void setDefinitionName(String name) {
_defName = name;
}
public void reset() {
// We default the firedMap to say all triggers are currently firing
for (Iterator i=_triggers.iterator(); i.hasNext(); ) {
Gtrigger t = (Gtrigger)i.next();
_firedMap.put(t, Boolean.TRUE);
}
_numFired = _triggers.size();
_log.debug("Resetting None strategy. NumFired=" + _numFired);
}
public ExecutionReason shouldFire() {
if (_numFired == 0) {
return new ExecutionReason("The condition is no longer met",
"None of the triggers are fired",
Collections.EMPTY_LIST, _partition);
}
return null;
}
public void triggerFired(Gtrigger trigger, FireReason reason) {
Boolean oldFired = (Boolean)_firedMap.get(trigger);
if (oldFired.equals(Boolean.FALSE)) {
_firedMap.put(trigger, Boolean.TRUE);
_numFired++;
}
_log.debug(trigger + " fired. Numfired= " + _numFired);
}
public void triggerNotFired(Gtrigger trigger) {
Boolean oldFired = (Boolean)_firedMap.get(trigger);
if (oldFired.equals(Boolean.TRUE)) {
_firedMap.put(trigger, Boolean.FALSE);
_numFired--;
}
_log.debug(trigger + " unfired. Numfired= " + _numFired);
}
}