/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.enterprise.web.stats;
import java.util.ArrayList;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.text.MessageFormat;
import javax.management.ObjectName;
import javax.management.MBeanServerFactory;
import javax.management.MBeanServer;
import javax.management.j2ee.statistics.CountStatistic;
import javax.management.j2ee.statistics.Statistic;
import com.sun.logging.LogDomains;
import com.sun.enterprise.admin.monitor.stats.PWCConnectionQueueStats;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatistic;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.GenericStatsImpl;
import com.sun.enterprise.admin.monitor.stats.CountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.StringStatistic;
import com.sun.enterprise.admin.monitor.stats.StringStatisticImpl;
/**
* Implementation of PWCConnectionQueueStats interface.
*/
public final class PWCConnectionQueueStatsImpl implements PWCConnectionQueueStats {
private static final Logger _logger
= LogDomains.getLogger(LogDomains.WEB_LOGGER);
private GenericStatsImpl baseStatsImpl;
private MBeanServer server;
private ObjectName connectionQueueName;
private StringStatistic id;
private MutableCountStatistic countTotalConnections;
private MutableCountStatistic countQueued;
private MutableCountStatistic peakQueued;
private MutableCountStatistic maxQueued;
private MutableCountStatistic countOverflows;
private MutableCountStatistic countTotalQueued;
private MutableCountStatistic ticksTotalQueued;
private MutableCountStatistic countQueued1MinuteAverage;
private MutableCountStatistic countQueued5MinuteAverage;
private MutableCountStatistic countQueued15MinuteAverage;
/**
* Constructor.
*
* @param domain Domain name
*/
public PWCConnectionQueueStatsImpl(String domain) {
baseStatsImpl = new GenericStatsImpl(
com.sun.enterprise.admin.monitor.stats.PWCConnectionQueueStats.class,
this);
// get an instance of the MBeanServer
ArrayList servers = MBeanServerFactory.findMBeanServer(null);
if(!servers.isEmpty())
server = (MBeanServer)servers.get(0);
else
server = MBeanServerFactory.createMBeanServer();
String objNameStr = domain + ":type=PWCConnectionQueue,*";
try {
connectionQueueName = new ObjectName(objNameStr);
} catch (Throwable t) {
String msg = _logger.getResourceBundle().getString(
"webcontainer.objectNameCreationError");
msg = MessageFormat.format(msg, new Object[] { objNameStr });
_logger.log(Level.SEVERE, msg, t);
}
// initialize all the MutableStatistic Classes
initializeStatistics();
}
/**
* Gets the ID of the connection queue
*
* @return The ID of the connection queue
*/
public StringStatistic getId() {
return id;
}
/**
* Gets the total number of connections that have been accepted.
*
* @return Total number of connections that have been accepted.
*/
public CountStatistic getCountTotalConnections() {
countTotalConnections.setCount(
StatsUtil.getAggregateStatistic(server, connectionQueueName,
"countTotalConnections"));
return (CountStatistic)countTotalConnections.unmodifiableView();
}
/**
* Gets the number of connections currently in the queue
*
* @return Number of connections currently in the queue
*/
public CountStatistic getCountQueued() {
countQueued.setCount(
StatsUtil.getAggregateStatistic(server, connectionQueueName,
"countQueued"));
return (CountStatistic)countQueued.unmodifiableView();
}
/**
* Gets the largest number of connections that were in the queue
* simultaneously.
*
* @return Largest number of connections that were in the queue
* simultaneously
*/
public CountStatistic getPeakQueued() {
peakQueued.setCount(
StatsUtil.getAggregateStatistic(server, connectionQueueName,
"peakQueued"));
return (CountStatistic)peakQueued.unmodifiableView();
}
/**
* Gets the maximum size of the connection queue
*
* @return Maximum size of the connection queue
*/
public CountStatistic getMaxQueued() {
maxQueued.setCount(
StatsUtil.getConstant(server, connectionQueueName, "maxQueued"));
return (CountStatistic)maxQueued.unmodifiableView();
}
/**
* Gets the number of times the queue has been too full to accommodate
* a connection
*
* @return Number of times the queue has been too full to accommodate
* a connection
*/
public CountStatistic getCountOverflows() {
countOverflows.setCount(
StatsUtil.getAggregateStatistic(server, connectionQueueName,
"countOverflows"));
return (CountStatistic)countOverflows.unmodifiableView();
}
/**
* Gets the total number of connections that have been queued.
*
* A given connection may be queued multiple times, so
* <code>counttotalqueued</code> may be greater than or equal to
* <code>counttotalconnections</code>.
*
* @return Total number of connections that have been queued
*/
public CountStatistic getCountTotalQueued() {
countTotalQueued.setCount(
StatsUtil.getAggregateStatistic(server, connectionQueueName,
"countTotalQueued"));
return (CountStatistic)countTotalQueued.unmodifiableView();
}
/**
* Gets the total number of ticks that connections have spent in the
* queue.
*
* A tick is a system-dependent unit of time.
*
* @return Total number of ticks that connections have spent in the
* queue
*/
public CountStatistic getTicksTotalQueued() {
ticksTotalQueued.setCount(
StatsUtil.getAverageStatistic(server, connectionQueueName,
"ticksTotalQueued"));
return (CountStatistic)ticksTotalQueued.unmodifiableView();
}
/**
* Gets the average number of connections queued in the last 1 minute
*
* @return Average number of connections queued in the last 1 minute
*/
public CountStatistic getCountQueued1MinuteAverage() {
countQueued1MinuteAverage.setCount(
StatsUtil.getAverageStatistic(server, connectionQueueName,
"countQueued1MinuteAverage"));
return (CountStatistic)countQueued1MinuteAverage.unmodifiableView();
}
/**
* Gets the average number of connections queued in the last 5 minutes
*
* @return Average number of connections queued in the last 5 minutes
*/
public CountStatistic getCountQueued5MinuteAverage() {
countQueued5MinuteAverage.setCount(
StatsUtil.getAverageStatistic(server, connectionQueueName,
"countQueued5MinuteAverage"));
return (CountStatistic)countQueued5MinuteAverage.unmodifiableView();
}
/**
* Gets the average number of connections queued in the last 15 minutes
*
* @return Average number of connections queued in the last 15 minutes
*/
public CountStatistic getCountQueued15MinuteAverage() {
countQueued15MinuteAverage.setCount(
StatsUtil.getAverageStatistic(server, connectionQueueName,
"countQueued15MinuteAverage"));
return (CountStatistic)countQueued15MinuteAverage.unmodifiableView();
}
/**
* This method can be used to retrieve all the Statistics, exposed
* by this implementation of Stats
* @return Statistic[]
*/
public Statistic[] getStatistics() {
return baseStatsImpl.getStatistics();
}
/**
* Queries for a statistic with the given name.
*
* @name Name of the statistic to query for
*
* @return Statistic for the given name
*/
public Statistic getStatistic(String name) {
return baseStatsImpl.getStatistic(name);
}
/**
* Gets array of all statistic names exposed by this implementation of
* <codeStats</code>
*
* @return Array of statistic names
*/
public String[] getStatisticNames() {
return baseStatsImpl.getStatisticNames();
}
private void initializeStatistics() {
long startTime = System.currentTimeMillis();
id = new StringStatisticImpl("",
"Id",
"String",
"ID of the connection queue",
startTime,
startTime);
CountStatistic c = new CountStatisticImpl("CountTotalConnections");
countTotalConnections = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountQueued");
countQueued = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("PeakQueued");
peakQueued = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("MaxQueued");
maxQueued = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountOverflows");
countOverflows = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountTotalQueued");
countTotalQueued = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("TicksTotalQueued");
ticksTotalQueued = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountQueued1MinuteAverage");
countQueued1MinuteAverage = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountQueued5MinuteAverage");
countQueued5MinuteAverage = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountQueued15MinuteAverage");
countQueued15MinuteAverage = new MutableCountStatisticImpl(c);
}
}