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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.PWCKeepAliveStats;
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;
/**
* @author Jan Luehe
*/
public final class PWCKeepAliveStatsImpl implements PWCKeepAliveStats {
private static final Logger _logger
= LogDomains.getLogger(LogDomains.WEB_LOGGER);
private GenericStatsImpl baseStatsImpl;
private MBeanServer server;
private ObjectName keepAliveName;
private MutableCountStatistic countConnections;
private MutableCountStatistic maxConnections;
private MutableCountStatistic countHits;
private MutableCountStatistic countFlushes;
private MutableCountStatistic countRefusals;
private MutableCountStatistic countTimeouts;
private MutableCountStatistic secondsTimeouts;
public PWCKeepAliveStatsImpl(String domain) {
baseStatsImpl = new GenericStatsImpl(
com.sun.enterprise.admin.monitor.stats.PWCKeepAliveStats.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=PWCKeepAlive,*";
try {
keepAliveName = 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 number of connections in keep-alive mode.
*
* @return Number of connections in keep-alive mode
*/
public CountStatistic getCountConnections() {
countConnections.setCount(
StatsUtil.getAggregateStatistic(server, keepAliveName,
"countConnections"));
return (CountStatistic)countConnections.unmodifiableView();
}
/**
* Gets the maximum number of concurrent connections in keep-alive mode.
*
* @return Maximum number of concurrent connections in keep-alive mode
*/
public CountStatistic getMaxConnections() {
maxConnections.setCount(
StatsUtil.getConstant(server, keepAliveName, "maxConnections"));
return (CountStatistic)maxConnections.unmodifiableView();
}
/**
* Gets the number of requests received by connections in keep-alive mode.
*
* @return Number of requests received by connections in keep-alive mode.
*/
public CountStatistic getCountHits() {
countHits.setCount(
StatsUtil.getAggregateStatistic(server, keepAliveName,
"countHits"));
return (CountStatistic)countHits.unmodifiableView();
}
/**
* Gets the number of keep-alive connections that were closed
*
* @return Number of keep-alive connections that were closed
*/
public CountStatistic getCountFlushes() {
countFlushes.setCount(
StatsUtil.getAggregateStatistic(server, keepAliveName,
"countFlushes"));
return (CountStatistic)countFlushes.unmodifiableView();
}
/**
* Gets the number of keep-alive connections that were rejected.
*
* @return Number of keep-alive connections that were rejected.
*/
public CountStatistic getCountRefusals() {
countRefusals.setCount(
StatsUtil.getAggregateStatistic(server, keepAliveName,
"countRefusals"));
return (CountStatistic)countRefusals.unmodifiableView();
}
/**
* Gets the number of keep-alive connections that timed out.
*
* @return Number of keep-alive connections that timed out.
*/
public CountStatistic getCountTimeouts() {
countTimeouts.setCount(
StatsUtil.getAggregateStatistic(server, keepAliveName,
"countTimeouts"));
return (CountStatistic)countTimeouts.unmodifiableView();
}
/**
* Gets the number of seconds before a keep-alive connection that has
* been idle times out and is closed.
*
* @return Keep-alive timeout in number of seconds
*/
public CountStatistic getSecondsTimeouts() {
secondsTimeouts.setCount(
StatsUtil.getConstant(server, keepAliveName, "secondsTimeouts"));
return (CountStatistic)secondsTimeouts.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() {
CountStatistic c = null;
c = new CountStatisticImpl("CountConnections");
countConnections = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("MaxConnections");
maxConnections = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountHits");
countHits = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountFlushes");
countFlushes = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountRefusals");
countRefusals = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("CountTimeouts");
countTimeouts = new MutableCountStatisticImpl(c);
c = new CountStatisticImpl("SecondsTimeouts");
secondsTimeouts = new MutableCountStatisticImpl(c);
}
}
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