/*
* This file is part of DRBD Management Console by LINBIT HA-Solutions GmbH
* written by Rasto Levrinc.
*
* Copyright (C) 2009, LINBIT HA-Solutions GmbH.
* Copyright (C) 2011-2012, Rastislav Levrinc.
*
* DRBD Management Console 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; either version 2, or (at your option)
* any later version.
*
* DRBD Management Console 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 drbd; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package lcmc.lvm.ui;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Set;
import javax.inject.Inject;
import javax.inject.Named;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SpringLayout;
import lcmc.common.domain.AccessMode;
import lcmc.common.domain.Application;
import lcmc.common.ui.utils.SwingUtils;
import lcmc.host.domain.Host;
import lcmc.common.domain.StringValue;
import lcmc.vm.domain.VmsXml;
import lcmc.common.domain.Value;
import lcmc.common.ui.Browser;
import lcmc.common.ui.SpringUtilities;
import lcmc.drbd.ui.resource.BlockDevInfo;
import lcmc.cluster.ui.widget.Widget;
import lcmc.cluster.ui.widget.WidgetFactory;
import lcmc.common.ui.utils.MyButton;
import lcmc.common.ui.utils.WidgetListener;
/**
* This class implements LVM snapshot dialog.
*/
@Named
public final class LVSnapshot extends LV {
private static final int SNAPSHOT_TIMEOUT = 5000;
private static final String SNAPSHOT_DESCRIPTION = "Create a snapshot of the logical volume.";
private BlockDevInfo blockDevInfo;
private Widget lvNameWi;
private Widget sizeWi;
private Widget maxSizeWi;
@Inject
private SwingUtils swingUtils;
@Inject
private WidgetFactory widgetFactory;
private MyButton snapshotButton;
public void init(final BlockDevInfo blockDevInfo) {
super.init(null);
this.blockDevInfo = blockDevInfo;
}
@Override
protected String getDialogTitle() {
return "LV Snapshot ";
}
@Override
protected String getDescription() {
return SNAPSHOT_DESCRIPTION;
}
@Override
protected void initDialogBeforeVisible() {
super.initDialogBeforeVisible();
enableComponentsLater(new JComponent[]{});
}
@Override
protected void initDialogAfterVisible() {
enableComponents();
makeDefaultAndRequestFocusLater(sizeWi.getComponent());
}
protected void checkButtons() {
swingUtils.invokeLater(new EnableSnapshotRunnable(true));
}
private void setComboBoxes() {
final String maxBlockSize = getMaxBlockSizeAvailableInGroup();
sizeWi.setValue(VmsXml.convertKilobytes(Long.toString(Long.parseLong(maxBlockSize) / 2)));
maxSizeWi.setValue(VmsXml.convertKilobytes(maxBlockSize));
}
@Override
protected JComponent getInputPane() {
snapshotButton = widgetFactory.createButton("Create Snapshot");
snapshotButton.setEnabled(false);
final JPanel pane = new JPanel(new SpringLayout());
final JPanel inputPane = new JPanel(new SpringLayout());
inputPane.setBackground(Browser.BUTTON_PANEL_BACKGROUND);
final String volumeGroup = blockDevInfo.getBlockDevice().getVolumeGroup();
inputPane.add(new JLabel("Group"));
inputPane.add(new JLabel(volumeGroup));
inputPane.add(new JLabel());
/* find next free logical volume name */
String defaultName;
final Set<String> volumeGroups = blockDevInfo.getHost().getHostParser().getLogicalVolumesFromVolumeGroup(volumeGroup);
int i = 0;
while (true) {
defaultName = "lvol" + i;
if (volumeGroups == null || !volumeGroups.contains(defaultName)) {
break;
}
i++;
}
lvNameWi = widgetFactory.createInstance(
Widget.Type.TEXTFIELD,
new StringValue(defaultName),
Widget.NO_ITEMS,
Widget.NO_REGEXP,
250,
Widget.NO_ABBRV,
new AccessMode(AccessMode.OP, AccessMode.NORMAL),
Widget.NO_BUTTON);
inputPane.add(new JLabel("LV Name"));
inputPane.add(lvNameWi.getComponent());
inputPane.add(new JLabel());
lvNameWi.addListeners(new WidgetListener() {
@Override
public void check(final Value value) {
checkButtons();
}
});
final String maxBlockSize = getMaxBlockSizeAvailableInGroup();
/* size */
final String newBlockSize = Long.toString(Long.parseLong(maxBlockSize) / 2);
final JLabel sizeLabel = new JLabel("New Size");
sizeWi = widgetFactory.createInstance(
Widget.Type.TEXTFIELDWITHUNIT,
VmsXml.convertKilobytes(newBlockSize),
Widget.NO_ITEMS,
getUnits(),
Widget.NO_REGEXP,
250,
Widget.NO_ABBRV,
new AccessMode(AccessMode.OP, AccessMode.NORMAL),
Widget.NO_BUTTON);
inputPane.add(sizeLabel);
inputPane.add(sizeWi.getComponent());
snapshotButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(final ActionEvent e) {
final Thread thread = new Thread(new Runnable() {
@Override
public void run() {
swingUtils.invokeAndWait(new EnableSnapshotRunnable(false));
disableComponents();
getProgressBar().start(SNAPSHOT_TIMEOUT);
final boolean ret = lvSnapshot(lvNameWi.getStringValue(), sizeWi.getStringValue());
final Host host = blockDevInfo.getHost();
host.getBrowser().getClusterBrowser().updateHWInfo(host, Host.UPDATE_LVM);
setComboBoxes();
if (ret) {
progressBarDone();
disposeDialog();
} else {
progressBarDoneError();
}
enableComponents();
}
});
thread.start();
}
});
inputPane.add(snapshotButton);
/* max size */
final JLabel maxSizeLabel = new JLabel("Max Size");
maxSizeLabel.setEnabled(false);
maxSizeWi = widgetFactory.createInstance(
Widget.Type.TEXTFIELDWITHUNIT,
VmsXml.convertKilobytes(maxBlockSize),
Widget.NO_ITEMS,
getUnits(),
Widget.NO_REGEXP,
250,
Widget.NO_ABBRV,
new AccessMode(AccessMode.OP, AccessMode.NORMAL),
Widget.NO_BUTTON);
maxSizeWi.setEnabled(false);
inputPane.add(maxSizeLabel);
inputPane.add(maxSizeWi.getComponent());
inputPane.add(new JLabel());
sizeWi.addListeners(new WidgetListener() {
@Override
public void check(final Value value) {
checkButtons();
}
});
SpringUtilities.makeCompactGrid(inputPane, 4, 3, /* rows, cols */
1, 1, /* initX, initY */
1, 1); /* xPad, yPad */
pane.add(inputPane);
pane.add(getProgressBarPane(null));
pane.add(getAnswerPane(""));
SpringUtilities.makeCompactGrid(pane, 3, 1, /* rows, cols */
0, 0, /* initX, initY */
0, 0); /* xPad, yPad */
checkButtons();
return pane;
}
private boolean lvSnapshot(final String lvName, final String size) {
final String volumeGroup = blockDevInfo.getBlockDevice().getVolumeGroup();
final boolean ret = blockDevInfo.lvSnapshot(lvName, size, Application.RunMode.LIVE);
if (ret) {
answerPaneSetText("Logical volume " + lvName + " was successfully created on " + volumeGroup + '.');
} else {
answerPaneSetTextError("Creating of logical volume " + lvName + " failed.");
}
return ret;
}
private String getMaxBlockSizeAvailableInGroup() {
final String volumeGroup = blockDevInfo.getBlockDevice().getVolumeGroup();
final long free = blockDevInfo.getHost().getHostParser().getFreeInVolumeGroup(volumeGroup) / 1024;
return Long.toString(free);
}
private class EnableSnapshotRunnable implements Runnable {
private final boolean enable;
EnableSnapshotRunnable(final boolean enable) {
super();
this.enable = enable;
}
@Override
public void run() {
boolean e = enable;
if (enable) {
final long size = VmsXml.convertToKilobytes(sizeWi.getValue());
final long maxSize = VmsXml.convertToKilobytes(maxSizeWi.getValue());
if (size > maxSize) {
e = false;
} else if (size <= 0) {
e = false;
} else {
final Set<String> lvs = blockDevInfo.getHost().getHostParser().getLogicalVolumesFromVolumeGroup(
blockDevInfo.getBlockDevice().getVolumeGroup());
if (lvs != null && lvs.contains(lvNameWi.getStringValue())) {
e = false;
}
}
}
snapshotButton.setEnabled(e);
}
}
}