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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmscore.util;
import java.util.Date;
import java.util.Hashtable;
import java.util.Vector;
import com.netscape.certsrv.apps.CMS;
import com.netscape.certsrv.base.EBaseException;
import com.netscape.certsrv.base.IConfigStore;
import com.netscape.certsrv.base.ISubsystem;
import com.netscape.certsrv.util.IStatsSubsystem;
import com.netscape.certsrv.util.StatsEvent;
/**
* A class represents a internal subsystem. This subsystem
* can be loaded into cert server kernel to perform
* statistics collection.
* <P>
*
* @author thomask
* @version $Revision$, $Date$
*/
public class StatsSubsystem implements IStatsSubsystem {
private String mId = null;
private StatsEvent mAllTrans = new StatsEvent(null);
private Date mStartTime = new Date();
private Hashtable<String, Vector<StatsMilestone>> mHashtable = new Hashtable<String, Vector<StatsMilestone>>();
/**
* Constructs a certificate server.
*/
public StatsSubsystem() {
super();
}
/**
* Retrieves subsystem identifier.
*/
public String getId() {
return mId;
}
public void setId(String id) throws EBaseException {
mId = id;
}
/**
* Initializes this subsystem with the given
* configuration store.
* It first initializes resident subsystems,
* and it loads and initializes loadable
* subsystem specified in the configuration
* store.
* <P>
* Note that individual subsystem should be initialized in a separated thread if it has dependency on the
* initialization of other subsystems.
* <P>
*
* @param owner owner of this subsystem
* @param config configuration store
*/
public synchronized void init(ISubsystem owner, IConfigStore config)
throws EBaseException {
}
public Date getStartTime() {
return mStartTime;
}
public void startTiming(String id) {
startTiming(id, false /* not the main */);
}
public void startTiming(String id, boolean mainAction) {
Thread t = Thread.currentThread();
Vector<StatsMilestone> milestones = null;
if (mHashtable.containsKey(t.toString())) {
milestones = mHashtable.get(t.toString());
} else {
milestones = new Vector<StatsMilestone>();
mHashtable.put(t.toString(), milestones);
}
long startTime = CMS.getCurrentDate().getTime();
StatsEvent currentST = null;
for (int i = 0; i < milestones.size(); i++) {
StatsMilestone se = (StatsMilestone) milestones.elementAt(i);
if (currentST == null) {
currentST = mAllTrans.getSubEvent(se.getId());
} else {
currentST = currentST.getSubEvent(se.getId());
}
}
if (currentST == null) {
if (!mainAction) {
return; /* ignore none main action */
}
currentST = mAllTrans;
}
StatsEvent newST = currentST.getSubEvent(id);
if (newST == null) {
newST = new StatsEvent(currentST);
newST.setName(id);
currentST.addSubEvent(newST);
}
milestones.addElement(new StatsMilestone(id, startTime, newST));
}
public void endTiming(String id) {
long endTime = CMS.getCurrentDate().getTime();
Thread t = Thread.currentThread();
if (!mHashtable.containsKey(t.toString())) {
return; /* error */
}
Vector<StatsMilestone> milestones = mHashtable.get(t.toString());
if (milestones.size() == 0) {
return; /* error */
}
StatsMilestone last = milestones.remove(milestones.size() - 1);
StatsEvent st = last.getStatsEvent();
st.incNoOfOperations(1);
st.incTimeTaken(endTime - last.getStartTime());
if (milestones.size() == 0) {
mHashtable.remove(t.toString());
}
}
public void resetCounters() {
mStartTime = CMS.getCurrentDate();
mAllTrans.resetCounters();
}
public StatsEvent getMainStatsEvent() {
return mAllTrans;
}
public void startup() throws EBaseException {
}
/**
* Stops this system.
*/
public synchronized void shutdown() {
}
/*
* Returns the root configuration storage of this system.
* <P>
*
* @return configuration store of this subsystem
*/
public IConfigStore getConfigStore() {
return null;
}
}
class StatsMilestone {
private String mId = null;
private long mStartTime = 0;
private StatsEvent mST = null;
public StatsMilestone(String id, long startTime, StatsEvent st) {
mId = id;
mStartTime = startTime;
mST = st;
}
public String getId() {
return mId;
}
public long getStartTime() {
return mStartTime;
}
public StatsEvent getStatsEvent() {
return mST;
}
}
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