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/**
* DataCleaner (community edition)
* Copyright (C) 2014 Free Software Foundation, Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.windows;
import java.awt.BorderLayout;
import java.awt.GridBagLayout;
import java.net.URI;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.event.DocumentEvent;
import org.datacleaner.bootstrap.WindowContext;
import org.datacleaner.configuration.ServerInformation;
import org.datacleaner.panels.DCPanel;
import org.datacleaner.server.DirectConnectionHadoopClusterInformation;
import org.datacleaner.user.MutableServerInformationCatalog;
import org.datacleaner.util.DCDocumentListener;
import org.datacleaner.util.ErrorUtils;
import org.datacleaner.util.IconUtils;
import org.datacleaner.util.ImageManager;
import org.datacleaner.util.StringUtils;
import org.datacleaner.util.WidgetFactory;
import org.datacleaner.util.WidgetUtils;
import org.datacleaner.widgets.Alignment;
import org.datacleaner.widgets.DCLabel;
import org.datacleaner.widgets.DescriptionLabel;
import org.jdesktop.swingx.JXStatusBar;
import org.jdesktop.swingx.JXTextField;
/**
* Dialog for creating and editing a direct connection to Hadoop namenode
*/
public class DirectConnectionHadoopClusterDialog extends AbstractDialog {
private static final ImageManager imageManager = ImageManager.get();
private static final long serialVersionUID = 1L;
private final DirectConnectionHadoopClusterInformation _directConnection;
private final JXTextField _nameTextField;
private final JXTextField _fileSystemURITextField;
private final JXTextField _descriptionTextField;
private final JLabel _statusLabel;
private final JButton _saveButton;
private final JButton _cancelButton;
private final MutableServerInformationCatalog _mutableServerInformationCatalog;
private ServerInformation _savedServer = null;
public DirectConnectionHadoopClusterDialog(final WindowContext windowContext,
final DirectConnectionHadoopClusterInformation directConnection,
final MutableServerInformationCatalog serverinformationCatalog) {
super(windowContext, ImageManager.get().getImage(IconUtils.FILE_HDFS));
_directConnection = directConnection;
_nameTextField = WidgetFactory.createTextField("My cluster");
_fileSystemURITextField = WidgetFactory.createTextField("hdfs://:/");
_descriptionTextField = WidgetFactory.createTextField("description");
_mutableServerInformationCatalog = serverinformationCatalog;
_statusLabel = DCLabel.bright("");
final String saveButtonText = directConnection == null ? "Register cluster" : "Save cluster";
_saveButton = WidgetFactory.createPrimaryButton(saveButtonText, IconUtils.ACTION_SAVE_BRIGHT);
_saveButton.addActionListener(listener -> {
try {
final URI nameNodeUri = new URI(_fileSystemURITextField.getText().trim());
final DirectConnectionHadoopClusterInformation newServer =
new DirectConnectionHadoopClusterInformation(_nameTextField.getText(),
_descriptionTextField.getText(), nameNodeUri);
_savedServer = newServer;
if (_directConnection != null) {
_mutableServerInformationCatalog.removeServer(_directConnection);
}
_mutableServerInformationCatalog.addServerInformation(newServer);
close();
} catch (final Exception e) {
invalidateForm(e);
}
});
_cancelButton = WidgetFactory.createDefaultButton("Cancel", IconUtils.ACTION_CANCEL);
_cancelButton.addActionListener(e -> DirectConnectionHadoopClusterDialog.this.close());
if (directConnection != null) {
_nameTextField.setText(directConnection.getName());
_nameTextField.setEnabled(false);
_fileSystemURITextField.setText(directConnection.getNameNodeUri().toString());
final String description = directConnection.getDescription();
if (description != null) {
_descriptionTextField.setText(description);
}
}
final DCDocumentListener documentListener = new DCDocumentListener() {
@Override
protected void onChange(final DocumentEvent event) {
validateAndUpdate();
}
};
_nameTextField.getDocument().addDocumentListener(documentListener);
_fileSystemURITextField.getDocument().addDocumentListener(documentListener);
_descriptionTextField.getDocument().addDocumentListener(documentListener);
}
@Override
public String getWindowTitle() {
return "Hadoop cluster - Direct namenode connection";
}
@Override
protected String getBannerTitle() {
return getWindowTitle();
}
@Override
protected int getDialogWidth() {
return 700;
}
@Override
protected JComponent getDialogContent() {
final DCPanel formPanel = new DCPanel();
formPanel.setLayout(new GridBagLayout());
int row = 0;
WidgetUtils.addToGridBag(DCLabel.bright("Cluster name:"), formPanel, 0, row);
WidgetUtils.addToGridBag(_nameTextField, formPanel, 1, row);
row++;
WidgetUtils.addToGridBag(DCLabel.bright("Description:"), formPanel, 0, row);
WidgetUtils.addToGridBag(_descriptionTextField, formPanel, 1, row);
row++;
WidgetUtils.addToGridBag(DCLabel.bright("File system URI:"), formPanel, 0, row);
WidgetUtils.addToGridBag(_fileSystemURITextField, formPanel, 1, row);
final DCPanel buttonPanel = DCPanel.flow(Alignment.CENTER, _saveButton, _cancelButton);
final DescriptionLabel descriptionLabel = new DescriptionLabel("Fill out the connection information needed "
+ "for DataCleaner to connect directly to the Apache Hadoop namenode and HDFS.");
final DCPanel centerPanel = new DCPanel();
centerPanel.setLayout(new BorderLayout());
centerPanel.add(descriptionLabel, BorderLayout.NORTH);
centerPanel.add(formPanel, BorderLayout.CENTER);
centerPanel.add(buttonPanel, BorderLayout.SOUTH);
final JXStatusBar statusBar = WidgetFactory.createStatusBar(_statusLabel);
final DCPanel outerPanel = new DCPanel();
outerPanel.setLayout(new BorderLayout());
outerPanel.add(centerPanel, BorderLayout.CENTER);
outerPanel.add(statusBar, BorderLayout.SOUTH);
validateAndUpdate();
outerPanel.setPreferredSize(getDialogWidth(), 300);
return outerPanel;
}
public ServerInformation getSavedServer() {
return _savedServer;
}
private void invalidateForm(final Exception exception) {
setStatusError(exception);
setSaveButtonEnabled(false);
}
private void validateAndUpdate() {
final boolean valid = validateForm();
setSaveButtonEnabled(valid);
}
private boolean validateForm() {
final String connectionName = _nameTextField.getText();
if (StringUtils.isNullOrEmpty(connectionName)) {
setStatusError("Please enter a cluster name");
return false;
}
final String connectionURI = _fileSystemURITextField.getText().trim();
if (StringUtils.isNullOrEmpty(connectionURI)) {
return false;
}
try {
final URI uri = new URI(connectionURI);
if (StringUtils.isNullOrEmpty(uri.getHost())) {
setStatusError("Please enter a hostname");
return false;
}
final int port = uri.getPort();
if (port <= 0) {
setStatusError("The port has to have minimum 4 digits");
return false;
}
} catch (final Exception e) {
return false;
}
setStatusValid();
return true;
}
private void setSaveButtonEnabled(final boolean enabled) {
_saveButton.setEnabled(enabled);
}
@Override
protected boolean isWindowResizable() {
return true;
}
protected void setStatusError(Throwable error) {
error = ErrorUtils.unwrapForPresentation(error);
setStatusError(error.getMessage());
}
protected void setStatusError(final String text) {
_statusLabel.setText(text);
_statusLabel.setIcon(imageManager.getImageIcon(IconUtils.STATUS_ERROR, IconUtils.ICON_SIZE_SMALL));
}
protected void setStatusValid() {
_statusLabel.setText("Hadoop cluster ready");
_statusLabel.setIcon(imageManager.getImageIcon(IconUtils.STATUS_VALID, IconUtils.ICON_SIZE_SMALL));
}
}
