net.sourceforge.squirrel_sql.client.gui.MemoryPanel Maven / Gradle / Ivy
package net.sourceforge.squirrel_sql.client.gui;
/*
* Copyright (C) 2001-2003 Gerd Wagner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import net.sourceforge.squirrel_sql.fw.id.IIdentifier;
import net.sourceforge.squirrel_sql.fw.util.StringManager;
import net.sourceforge.squirrel_sql.fw.util.StringManagerFactory;
import net.sourceforge.squirrel_sql.fw.util.Utilities;
import net.sourceforge.squirrel_sql.fw.gui.ErrorDialog;
import net.sourceforge.squirrel_sql.client.IApplication;
import net.sourceforge.squirrel_sql.client.session.event.SessionEvent;
import net.sourceforge.squirrel_sql.client.session.event.SessionAdapter;
import net.sourceforge.squirrel_sql.client.resources.SquirrelResources;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.*;
import java.text.DateFormat;
import javax.swing.*;
import javax.swing.Timer;
public class MemoryPanel extends JPanel
{
/** Internationalized strings for this class. */
private static final StringManager s_stringMgr =
StringManagerFactory.getStringManager(MemoryPanel.class);
private JProgressBar _bar;
private JButton _btnGarbage;
private JButton _btnSessionGCStatus;
transient private IApplication _app;
private HashMap _sessionInfosBySessionIDs =
new HashMap();
public MemoryPanel(IApplication app)
{
_app = app;
_bar = new JProgressBar();
_bar.setStringPainted(true);
_btnGarbage = new JButton();
// i18n[MemoryPanel.runGC=Run garbage collection]
_btnGarbage.setToolTipText(s_stringMgr.getString("MemoryPanel.runGC"));
_btnGarbage.setBorder(null);
ImageIcon trashIcon = _app.getResources().getIcon(SquirrelResources.IImageNames.TRASH);
_btnGarbage.setIcon(trashIcon);
Dimension prefButtonSize = new Dimension(3 * trashIcon.getIconWidth() / 2, trashIcon.getIconHeight());
_btnGarbage.setPreferredSize(prefButtonSize);
_btnGarbage.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
Utilities.garbageCollect();
}
});
_btnSessionGCStatus = new JButton()
{
public void paint(Graphics g)
{
super.paint(g);
// paintNumWaitingGC(g);
}
};
_btnSessionGCStatus.setBorder(null);
updateGcStatus();
_btnSessionGCStatus.setBorder(null);
_btnSessionGCStatus.setPreferredSize(prefButtonSize);
_btnSessionGCStatus.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
showSessionGCStatus();
}
});
JPanel pnlButtons = new JPanel(new GridLayout(1,2,3,0));
pnlButtons.add(_btnSessionGCStatus);
pnlButtons.add(_btnGarbage);
this.setLayout(new BorderLayout(5,0));
this.add(pnlButtons, BorderLayout.EAST);
this.add(_bar, BorderLayout.CENTER);
this.setBorder(null);
_app.getSessionManager().addSessionListener(new SessionAdapter()
{
public void sessionClosed(SessionEvent evt)
{
IIdentifier id = evt.getSession().getIdentifier();
MemorySessionInfo msi = _sessionInfosBySessionIDs.get(id);
if(null == msi)
{
throw new IllegalStateException("A session with ID " + id + " has not been created");
}
msi.closed = new Date();
updateGcStatus();
}
public void sessionConnected(SessionEvent evt)
{
IIdentifier id = evt.getSession().getIdentifier();
if(null != _sessionInfosBySessionIDs.get(id))
{
throw new IllegalStateException("A session with ID " + id + " has already been created");
}
MemorySessionInfo msi = new MemorySessionInfo(id, evt.getSession().getAlias().getName());
_sessionInfosBySessionIDs.put(id, msi);
}
public void sessionFinalized(IIdentifier sessionId)
{
MemorySessionInfo msi = _sessionInfosBySessionIDs.get(sessionId);
if(null == msi)
{
throw new IllegalStateException("A session with ID " + sessionId + " has not been created");
}
msi.finalized = new Date();
updateGcStatus();
}
});
Timer t = new Timer(500, new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
updateLabel();
}
});
t.start();
}
private void updateGcStatus()
{
SessionGCStatus gcStat = getSessionGCStatus();
_btnSessionGCStatus.setToolTipText(gcStat.tooltip);
_btnSessionGCStatus.setBackground(gcStat.color);
_btnSessionGCStatus.setText(gcStat.numSessAwaitingGC);
}
private SessionGCStatus getSessionGCStatus()
{
SessionGCStatus ret = new SessionGCStatus();
int numSessAwaitingGC = 0;
for(Iterator i =
_sessionInfosBySessionIDs.values().iterator(); i.hasNext();)
{
MemorySessionInfo msi = i.next();
if(null != msi.closed && null == msi.finalized)
{
++numSessAwaitingGC;
}
}
ret.numSessAwaitingGC = "" + numSessAwaitingGC;
// i18n [MemoryPanel.gcStatusToolTip={0} Sessions waiting for garbage collection]
ret.tooltip = s_stringMgr.getString("MemoryPanel.gcStatusToolTip", new Integer(ret.numSessAwaitingGC));
ret.color = Color.yellow;
if(numSessAwaitingGC < 2)
{
ret.color = Color.green;
}
else if(numSessAwaitingGC > 4)
{
ret.color = Color.red;
}
return ret;
}
private void updateLabel()
{
long total = Runtime.getRuntime().totalMemory() >> 10 >> 10;
long free = Runtime.getRuntime().freeMemory() >> 10 >> 10;
long just = total-free;
_bar.setMinimum(0);
_bar.setMaximum((int)total);
_bar.setValue((int)just);
Object[] params = new Long[]
{
Long.valueOf(just),
Long.valueOf(total)
};
// i18n[MemoryPanel.memSize={0} of {1} MB];
String msg = s_stringMgr.getString("MemoryPanel.memSize", params);
_bar.setString(msg);
}
private void showSessionGCStatus()
{
StringBuffer[] params = new StringBuffer[]
{
new StringBuffer(getSessionGCStatus().tooltip),
new StringBuffer(),
new StringBuffer(),
new StringBuffer()
};
MemorySessionInfo[] msis =
_sessionInfosBySessionIDs.values().toArray(new MemorySessionInfo[0]);
Arrays.sort(msis);
for (int i = 0; i < msis.length; i++)
{
if(null != msis[i].closed && null == msis[i].finalized)
{
params[1].append(msis[i].toString()).append('\n');
}
else if(null == msis[i].closed)
{
params[2].append(msis[i].toString()).append('\n');
}
else if(null != msis[i].finalized)
{
params[3].append(msis[i].toString()).append('\n');
}
}
// i18n [MemoryPanel.gcStatus={0}\n\n
//Sessions waiting for garbage collection:\n
//==================================================\n
//{1}\n
//Sessions open:\n
//==================================================\n
//{2}\n
//Sessions garbage collected:\n
//==================================================\n
//{3}\n]
String msg = s_stringMgr.getString("MemoryPanel.gcStatus", (Object[])params);
ErrorDialog errorDialog = new ErrorDialog(_app.getMainFrame(), msg);
// i18n[MemoryPanel.statusDialogTitle=Session garbage collection status]
errorDialog.setTitle(s_stringMgr.getString("MemoryPanel.statusDialogTitle"));
errorDialog.setVisible(true);
}
private static class MemorySessionInfo implements Comparable
{
MemorySessionInfo(IIdentifier sessionId, String aliasName)
{
this.sessionId = sessionId;
this.aliasName = aliasName;
}
IIdentifier sessionId;
String aliasName;
java.util.Date created = new Date();
java.util.Date closed;
java.util.Date finalized;
public String toString()
{
DateFormat df = DateFormat.getInstance();
Object[] params = new Object[]
{
sessionId,
aliasName,
df.format(created),
null == closed ? "" : df.format(closed),
null == finalized ? "" :df.format(finalized)
};
if(null != closed && null == finalized)
{
// i18n[MemoryPanel.sessionInfo.toString1=Session: ID={0}, Alias={1}: created at {2}, closed at {3}]
return s_stringMgr.getString("MemoryPanel.sessionInfo.toString1", params);
}
else if(null == closed)
{
// i18n[MemoryPanel.sessionInfo.toString2=Session: ID={0}, Alias={1}: created at {2}]
return s_stringMgr.getString("MemoryPanel.sessionInfo.toString2", params);
}
else if(null != finalized)
{
// i18n[MemoryPanel.sessionInfo.toString3=Session: ID={0}, Alias={1}: created at {2}, closed at {3}, finalized at {4}]
return s_stringMgr.getString("MemoryPanel.sessionInfo.toString3", params);
}
else
{
throw new IllegalStateException("Unknown Session state");
}
}
public int compareTo(MemorySessionInfo other)
{
return Integer.valueOf(sessionId.toString()).compareTo(Integer.valueOf(other.sessionId.toString()));
}
/**
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((sessionId == null) ? 0 : sessionId.hashCode());
return result;
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
final MemorySessionInfo other = (MemorySessionInfo) obj;
if (sessionId == null) {
if (other.sessionId != null)
return false;
} else if (!sessionId.equals(other.sessionId))
return false;
return true;
}
}
private static class SessionGCStatus
{
String tooltip;
Color color;
String numSessAwaitingGC;
}
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