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package com.sun.enterprise.web.stats;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.StringTokenizer;
import javax.management.j2ee.statistics.Statistic;
import javax.management.j2ee.statistics.CountStatistic;
import com.sun.logging.LogDomains;
import com.sun.enterprise.web.MonitorStatsCapable;
import com.sun.enterprise.admin.monitor.stats.WebModuleStats;
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;
import com.sun.enterprise.web.monitor.PwcWebModuleStats;
import org.apache.catalina.Manager;
/**
* Class gathering web module statistics.
*/
public class WebModuleStatsImpl implements WebModuleStats {
private static final Logger _logger
= LogDomains.getLogger(LogDomains.WEB_LOGGER);
protected Manager sessionManager;
protected GenericStatsImpl baseStatsImpl;
private PwcWebModuleStats pwcWebStats;
private long initTime;
/*
* JSP related stats
*/
protected MutableCountStatistic jspCount;
protected MutableCountStatistic jspReloadCount;
protected MutableCountStatistic jspErrorCount;
/*
* Session management related stats
*/
protected MutableCountStatistic sessionsTotal;
protected MutableCountStatistic activeSessionsCurrent;
protected MutableCountStatistic activeSessionsHigh;
protected MutableCountStatistic rejectedSessionsTotal;
protected MutableCountStatistic expiredSessionsTotal;
protected MutableCountStatistic processingTimeMillis;
/**
* Constructor.
*/
public WebModuleStatsImpl() {
this(com.sun.enterprise.admin.monitor.stats.WebModuleStats.class);
}
/**
* Constructor.
*
* @param inter Interface exposed by this instance to the monitoring
* framework
*/
protected WebModuleStatsImpl(Class inter) {
baseStatsImpl = new GenericStatsImpl(inter, this);
// initialize all the MutableStatistic Classes
initializeStatistics();
}
/**
* Sets the session manager that this WebModuleStatsImpl is going to query
* for session-related stats.
*
* @param manager Session manager
*/
public void setSessionManager(Manager manager) {
if (manager == null) {
throw new IllegalArgumentException("Null session manager");
}
this.sessionManager = manager;
}
/**
* Sets the PwcWebModuleStats instance to which this WebModuleStatsImpl is
* going to delegate.
*
* @param pwcWebStats PwcWebModuleStats instance to which to delegate
*/
public void setPwcWebModuleStats(PwcWebModuleStats pwcWebStats) {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
this.pwcWebStats = pwcWebStats;
}
/**
* Gets the number of JSPs that have been loaded in the web module
* associated with this WebModuleStatsImpl.
*.
* @return Number of JSPs that have been loaded
*/
public CountStatistic getJspCount() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
jspCount.setCount(pwcWebStats.getJspCount());
return (CountStatistic) jspCount.unmodifiableView();
}
/**
* Gets the number of JSPs that have been reloaded in the web module
* associated with this WebModuleStatsImpl.
*.
* @return Number of JSPs that have been reloaded
*/
public CountStatistic getJspReloadCount() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
jspReloadCount.setCount(pwcWebStats.getJspReloadCount());
return (CountStatistic) jspReloadCount.unmodifiableView();
}
/**
* Gets the number of errors that were triggered by JSP invocations.
*.
* @return Number of errors triggered by JSP invocations
*/
public CountStatistic getJspErrorCount() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
jspErrorCount.setCount(pwcWebStats.getJspErrorCount());
return (CountStatistic) jspErrorCount.unmodifiableView();
}
/**
* Gets the total number of sessions that have been created for the web
* module associated with this WebModuleStatsImpl.
*.
* @return Total number of sessions created
*/
public CountStatistic getSessionsTotal() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
sessionsTotal.setCount(pwcWebStats.getSessionsTotal());
return (CountStatistic) sessionsTotal.unmodifiableView();
}
/**
* Gets the number of currently active sessions for the web
* module associated with this WebModuleStatsImpl.
*.
* @return Number of currently active sessions
*/
public CountStatistic getActiveSessionsCurrent() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
activeSessionsCurrent.setCount(pwcWebStats.getActiveSessionsCurrent());
return (CountStatistic) activeSessionsCurrent.unmodifiableView();
}
/**
* Gets the maximum number of concurrently active sessions for the web
* module associated with this WebModuleStatsImpl.
*
* @return Maximum number of concurrently active sessions
*/
public CountStatistic getActiveSessionsHigh() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
activeSessionsHigh.setCount(pwcWebStats.getActiveSessionsHigh());
return (CountStatistic) activeSessionsHigh.unmodifiableView();
}
/**
* Gets the total number of rejected sessions for the web
* module associated with this WebModuleStatsImpl.
*
* <p>This is the number of sessions that were not created because the
* maximum allowed number of sessions were active.
*
* @return Total number of rejected sessions
*/
public CountStatistic getRejectedSessionsTotal() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
rejectedSessionsTotal.setCount(pwcWebStats.getRejectedSessionsTotal());
return (CountStatistic) rejectedSessionsTotal.unmodifiableView();
}
/**
* Gets the total number of expired sessions for the web
* module associated with this WebModuleStatsImpl.
*.
* @return Total number of expired sessions
*/
public CountStatistic getExpiredSessionsTotal() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
expiredSessionsTotal.setCount(pwcWebStats.getExpiredSessionsTotal());
return (CountStatistic) expiredSessionsTotal.unmodifiableView();
}
/**
* Gets the cumulative processing times of all servlets in the web module
* associated with this WebModuleStatsImpl.
*
* @return Cumulative processing times of all servlets in the web module
* associated with this WebModuleStatsImpl
*/
public CountStatistic getServletProcessingTimes() {
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
processingTimeMillis.setCount(
pwcWebStats.getServletProcessingTimesMillis());
return (CountStatistic) processingTimeMillis.unmodifiableView();
}
/**
* Returns comma-separated list of all sessions currently active in the web
* module associated with this WebModuleStatsImpl.
*
* @return Comma-separated list of all sessions currently active in the
* web module associated with this WebModuleStatsImpl
*/
public StringStatistic getSessions() {
StringBuffer sb = null;
if (pwcWebStats == null) {
throw new IllegalArgumentException("Null PwcWebModuleStats");
}
String sessionIds = pwcWebStats.getSessionIds();
if (sessionIds != null) {
sb = new StringBuffer();
StringTokenizer tokenizer = new StringTokenizer(sessionIds, " ");
boolean first = true;
while (tokenizer.hasMoreTokens()) {
if (!first) {
sb.append(", ");
} else {
first = false;
}
String sessionId = tokenizer.nextToken();
sb.append(sessionId);
HashMap map = pwcWebStats.getSession(sessionId);
if (map != null) {
sb.append(":");
sb.append(map);
}
}
}
return new StringStatisticImpl(
sb != null ? sb.toString(): null,
"Sessions",
"String",
"List of currently active sessions",
initTime,
System.currentTimeMillis());
}
/**
* Resets this WebModuleStats.
*/
public void reset() {
// Reset session stats
if (sessionManager instanceof MonitorStatsCapable) {
((MonitorStatsCapable)sessionManager).resetMonitorStats();
}
if (pwcWebStats != null) {
pwcWebStats.reset();
}
}
/**
* Gets all statistics exposed by this WebModuleStatsImpl instance.
*
* @return Array of all statistics exposed by this WebModuleStatsImpl
* instance
*/
public Statistic[] getStatistics() {
return baseStatsImpl.getStatistics();
}
/**
* Queries for a statistic by name.
*
* @param name The name of the statistic to query for
*
* @return The statistic corresponding to the given name
*/
public Statistic getStatistic(String name) {
return baseStatsImpl.getStatistic(name);
}
/**
* Returns the names of all statistics that may be retrieved from this
* WebModuleStatsImpl instance.
*
* @return Array of names of all statistics exposed by this
* WebModuleStatsImpl instance
*/
public String[] getStatisticNames() {
return baseStatsImpl.getStatisticNames();
}
private void initializeStatistics() {
jspCount = new MutableCountStatisticImpl(
new CountStatisticImpl("JspCount"));
jspReloadCount = new MutableCountStatisticImpl(
new CountStatisticImpl("JspReloadCount"));
jspErrorCount = new MutableCountStatisticImpl(
new CountStatisticImpl("JspErrorCount"));
sessionsTotal = new MutableCountStatisticImpl(
new CountStatisticImpl("SessionsTotal"));
activeSessionsCurrent = new MutableCountStatisticImpl(
new CountStatisticImpl("ActiveSessionsCurrent"));
activeSessionsHigh = new MutableCountStatisticImpl(
new CountStatisticImpl("ActiveSessionsHigh"));
rejectedSessionsTotal = new MutableCountStatisticImpl(
new CountStatisticImpl("RejectedSessionsTotal"));
expiredSessionsTotal = new MutableCountStatisticImpl(
new CountStatisticImpl("ExpiredSessionsTotal"));
processingTimeMillis = new MutableCountStatisticImpl(
new CountStatisticImpl("ServletProcessingTimes"));
initTime = System.currentTimeMillis ();
}
}
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