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/*******************************************************************************
* Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com>
* This file is part of Gluster Management Console.
*
* Gluster 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 3 of the License, or (at your option) any later version.
*
* Gluster 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 this program. If not, see
* <http://www.gnu.org/licenses/>.
*******************************************************************************/
package org.gluster.storage.management.console.dialogs;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.gluster.storage.management.console.GlusterDataModelManager;
import org.gluster.storage.management.core.model.Brick;
import org.gluster.storage.management.core.model.Device;
import org.gluster.storage.management.core.model.Volume;
import org.gluster.storage.management.core.model.Volume.VOLUME_TYPE;
import com.richclientgui.toolbox.duallists.DualListComposite.ListContentChangedListener;
import com.richclientgui.toolbox.duallists.IRemovableContentProvider;
/**
* @author root
*
*/
public class AddBrickPage extends WizardPage {
private List<Device> availableDevices = new ArrayList<Device>();
private Volume volume = null;
private BricksSelectionPage page = null;
public static final String PAGE_NAME = "add.disk.volume.page";
/**
* @param pageName
*/
protected AddBrickPage(Volume volume) {
super(PAGE_NAME);
this.volume = volume;
setTitle("Add Brick");
String description = "Add bricks to [" + volume.getName() + "] ";
if ( volume.getVolumeType() == VOLUME_TYPE.DISTRIBUTED_REPLICATE) {
description += "(in multiples of " + volume.getReplicaCount() + ")";
} else if (volume.getVolumeType() == VOLUME_TYPE.DISTRIBUTED_STRIPE) {
description += "(in multiples of " + volume.getStripeCount() + ")";
}
setDescription(description);
availableDevices = getAvailableDevices(volume);
setPageComplete(false);
setErrorMessage("Please select bricks to be added to the volume [" + volume.getName() +"]");
}
private boolean isDeviceUsed(Volume volume, Device device){
for (Brick volumeBrick : volume.getBricks()) {
if ( device.getQualifiedBrickName(volume.getName()).equals(volumeBrick.getQualifiedName())) {
return true;
}
}
return false;
}
protected List<Device> getAvailableDevices(Volume volume) {
List<Device> availableDevices = new ArrayList<Device>();
for (Device device : GlusterDataModelManager.getInstance().getReadyDevicesOfAllServers()) {
if ( ! isDeviceUsed(volume, device) ) {
availableDevices.add(device);
}
}
return availableDevices;
}
public Set<Device> getChosenDevices() {
return new HashSet<Device>(page.getChosenDevices());
}
public Set<Brick> getChosenBricks( String volumeName ) {
return page.getChosenBricks(volumeName);
}
private boolean isValidDiskSelection(int diskCount) {
if ( diskCount == 0) {
return false;
}
switch (volume.getVolumeType()) {
case DISTRIBUTED_REPLICATE:
return (diskCount % volume.getReplicaCount() == 0);
case DISTRIBUTED_STRIPE:
return (diskCount % volume.getStripeCount() == 0);
}
return true;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
*/
@Override
public void createControl(Composite parent) {
getShell().setText("Add Brick");
List<Device> chosenDevices = new ArrayList<Device>(); // or volume.getDisks();
page = new BricksSelectionPage(parent, SWT.NONE, availableDevices, chosenDevices, volume.getName());
page.addDiskSelectionListener(new ListContentChangedListener<Device>() {
@Override
public void listContentChanged(IRemovableContentProvider<Device> contentProvider) {
List<Device> newChosenDevices = page.getChosenDevices();
// validate chosen disks
if(isValidDiskSelection(newChosenDevices.size())) {
clearError();
} else {
setError();
}
}
});
setControl(page);
}
private void setError() {
String errorMessage = null;
if ( volume.getVolumeType() == VOLUME_TYPE.DISTRIBUTE) {
errorMessage = "Please select at least one brick!";
} else if( volume.getVolumeType() == VOLUME_TYPE.DISTRIBUTED_REPLICATE) {
errorMessage = "Please select bricks in multiples of " + volume.getReplicaCount();
} else {
errorMessage = "Please select bricks in multiples of " + volume.getStripeCount();
}
setPageComplete(false);
setErrorMessage(errorMessage);
}
private void clearError() {
setErrorMessage(null);
setPageComplete(true);
}
public BricksSelectionPage getDialogPage() {
return this.page;
}
public void setPageComplete() {
}
}
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