/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please contact
* Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA", nor may
* "JXTA" appear in their name, without prior written permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SUN
* MICROSYSTEMS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
* http://www.jxta.org.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*/
package net.jxta.impl.meter;
import net.jxta.meter.ServiceMonitor;
import net.jxta.meter.ServiceMonitorFilter;
import java.util.Iterator;
import java.util.LinkedList;
public class ServiceMonitorPulseInfo {
public static final int NOT_PULSING = MonitorManager.NOT_PULSING;
private MonitorManager monitorManager;
ServiceMonitor serviceMonitor;
private LinkedList<RegisteredServiceMonitorFilter> registeredServiceMonitorFilters = new LinkedList<RegisteredServiceMonitorFilter>();
private int pulseRateIndex = NOT_PULSING; // quickestReportRateIndex registered for this service
private long pulseRate = NOT_PULSING; // quickestReportRate registered for this service
private int filtersPerRate[];
private boolean pulsing;
private class RegisteredServiceMonitorFilter {
ServiceMonitorFilter serviceMonitorFilter;
int reportRateIndex;
RegisteredServiceMonitorFilter(ServiceMonitorFilter serviceMonitorFilter, int reportRateIndex) {
this.serviceMonitorFilter = serviceMonitorFilter;
this.reportRateIndex = reportRateIndex;
}
}
public ServiceMonitorPulseInfo() {}
ServiceMonitorPulseInfo(MonitorManager monitorManager, ServiceMonitor serviceMonitor) {
this.monitorManager = monitorManager;
this.serviceMonitor = serviceMonitor;
filtersPerRate = new int[monitorManager.getReportRatesCount()];
}
public ServiceMonitor getServiceMonitor() {
return serviceMonitor;
}
public int getPulseRateIndex() {
return pulseRateIndex;
}
public long getPulseRate() {
return pulseRate;
}
public boolean isPulsing() {
return pulsing;
}
public boolean isEvenPulseForRateIndex(int pulseRateIndex) {
return monitorManager.isEvenPulseForRateIndex(pulseRateIndex);
}
public boolean isRegisteredFilterForRate(int pulseRateIndex) {
return (filtersPerRate[pulseRateIndex] != 0);
}
void registerServiceMonitorFilter(ServiceMonitorFilter serviceMonitorFilter, int reportRateIndex, long reportRate) {
RegisteredServiceMonitorFilter registeredServiceMonitorFilter = new RegisteredServiceMonitorFilter(serviceMonitorFilter
,
reportRateIndex);
registeredServiceMonitorFilters.add(registeredServiceMonitorFilter);
filtersPerRate[reportRateIndex]++;
if ((pulseRateIndex == NOT_PULSING) || (reportRateIndex < pulseRateIndex)) {
int oldPulseRateIndex = pulseRateIndex;
pulseRateIndex = reportRateIndex;
pulseRate = reportRate;
pulsing = true;
if (serviceMonitor instanceof ServiceMonitorImpl) {
((ServiceMonitorImpl) serviceMonitor).resetPulseRate(this, oldPulseRateIndex);
}
}
boolean newRate = (filtersPerRate[reportRateIndex] == 1);
serviceMonitor.serviceMonitorFilterRegistered(serviceMonitorFilter, reportRateIndex, reportRate, newRate);
}
boolean deregisterServiceMonitorFilter(ServiceMonitorFilter serviceMonitorFilter, int reportRateIndex, long reportRate) {
boolean removed = false;
for (Iterator<RegisteredServiceMonitorFilter> i = registeredServiceMonitorFilters.iterator(); i.hasNext();) {
RegisteredServiceMonitorFilter registeredMonitorFilter = i.next();
if ((registeredMonitorFilter.serviceMonitorFilter == serviceMonitorFilter)
&& (registeredMonitorFilter.reportRateIndex == reportRateIndex)) {
i.remove();
removed = true;
break;
}
}
if (!removed) { // Fix-Me: This should never happen if Monitor Manager works properly.
return false;
}
filtersPerRate[reportRateIndex]--;
serviceMonitor.serviceMonitorFilterDeregistered(serviceMonitorFilter, reportRateIndex, reportRate
,
filtersPerRate[reportRateIndex] == 0);
if ((filtersPerRate[reportRateIndex] == 0) && (reportRateIndex == pulseRateIndex)) {
// pulseRateSlowing Down
int newPulseRateIndex = NOT_PULSING;
for (int i = pulseRateIndex; i < filtersPerRate.length; i++) {
if (filtersPerRate[i] != 0) {
newPulseRateIndex = i;
break;
}
}
int oldPulserRateIndex = pulseRateIndex;
pulseRateIndex = newPulseRateIndex;
if (newPulseRateIndex != NOT_PULSING) {
pulseRate = monitorManager.getReportRate(pulseRateIndex);
pulsing = true;
} else {
pulseRate = NOT_PULSING;
pulsing = false;
}
if (serviceMonitor instanceof ServiceMonitorImpl) {
((ServiceMonitorImpl) serviceMonitor).resetPulseRate(this, oldPulserRateIndex);
}
}
return removed;
}
}