Java tutorial
/* * This file is distributed as part of the MariaDB Manager. It 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. * * 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. * * Copyright 2012-2014 SkySQL Corporation Ab */ package com.skysql.manager.ui; import com.skysql.manager.ManagerUI; import com.skysql.manager.api.NodeInfo; import com.skysql.manager.api.SystemTypes; import com.skysql.manager.validators.NodeNameValidator; import com.skysql.manager.validators.Password2Validator; import com.skysql.manager.validators.UserNotRootValidator; import com.vaadin.data.Property; import com.vaadin.data.Property.ValueChangeEvent; import com.vaadin.data.Validator; import com.vaadin.data.Validator.EmptyValueException; import com.vaadin.data.Validator.InvalidValueException; import com.vaadin.server.ThemeResource; import com.vaadin.shared.ui.MarginInfo; import com.vaadin.ui.Alignment; import com.vaadin.ui.Embedded; import com.vaadin.ui.Form; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Layout; import com.vaadin.ui.OptionGroup; import com.vaadin.ui.PasswordField; import com.vaadin.ui.TextArea; import com.vaadin.ui.TextField; import com.vaadin.ui.VerticalLayout; /** * The Class NodeForm. */ @SuppressWarnings("deprecation") public class NodeForm extends VerticalLayout { private static final long serialVersionUID = 0x4C656F6E6172646FL; final static String connectionInfo = "If this node is available now, a connection will be attempted using either the root password or ssh key provided by the user. If it is not, a node representation will be created in the system and when it becomes available, the user can run the connect command from the Control panel. In both cases, neither the password nor the key will be stored or retained beyond the attempt to establish the initial connection and will be discarded whether this is successful or not."; public boolean runConnect = false, usePassword = false; public boolean isGalera = false; private NodeInfo node; final TextField name = new TextField("Name"); final TextField hostname = new TextField("Hostname"); final TextField instanceID = new TextField("Instance ID"); final TextField publicIP = new TextField("Public IP"); final TextField privateIP = new TextField("Private IP"); final TextField dbUsername = new TextField("Database Username"); final PasswordField dbPassword = new PasswordField("Database Password"); final PasswordField dbPassword2 = new PasswordField("Confirm Password"); final TextField repUsername = new TextField("Replication Username"); final PasswordField repPassword = new PasswordField("Replication Password"); final PasswordField repPassword2 = new PasswordField("Confirm Password"); final PasswordField connectPassword = new PasswordField("Root Password"); final PasswordField connectPassword2 = new PasswordField("Confirm Password"); final TextArea connectKey = new TextArea("SSH Key"); final OptionGroup passwordOption = new OptionGroup(); final Form form = new Form(); /** * Instantiates a new node form. * * @param node the node * @param description the description */ NodeForm(final NodeInfo node, String description) { this.node = node; setMargin(new MarginInfo(true, true, false, true)); setSpacing(false); isGalera = node.getSystemType().equals(SystemTypes.Type.galera.name()); HorizontalLayout formDescription = new HorizontalLayout(); formDescription.setSpacing(true); Embedded info = new Embedded(null, new ThemeResource("img/info.png")); info.addStyleName("infoButton"); String infoText = "<table border=0 cellspacing=3 cellpadding=0 summary=\"\">\n" + " <tr bgcolor=\"#ccccff\">" + " <th align=left>Field" + " <th align=left>Description" + " <tr>" + " <td><code>Name</code>" + " <td>Name of the Node" + " <tr bgcolor=\"#eeeeff\">" + " <td><code>Hostname</code>" + " <td>In some systems, a hostname that identifies the node" + " <tr>" + " <td><code>Instance ID</code>" + " <td>The instance ID field is for information only and is not used within the Manager" + " <tr bgcolor=\"#eeeeff\">" + " <td><code>Public IP</code>" + " <td>In some systems, the public IP address of the node" + " <tr>" + " <td><code>Private IP</code>" + " <td>The IP address that accesses the node internally to the manager"; if (!isGalera) { infoText += " <tr bgcolor=\"#eeeeff\">" + " <td><code>Database Username</code>" + " <td>Node system override for database user name" + " <tr>" + " <td><code>Database Password</code>" + " <td>Node system override for database password" + " <tr bgcolor=\"#eeeeff\">" + " <td><code>Replication Username</code>" + " <td>Node system override for replication user name" + " <tr>" + " <td><code>Replication Password</code>" + " <td>Node system override for replication password"; } infoText += " </table>" + " </blockquote>"; info.setDescription(infoText); formDescription.addComponent(info); Label labelDescription = new Label(description); formDescription.addComponent(labelDescription); formDescription.setComponentAlignment(labelDescription, Alignment.MIDDLE_LEFT); addComponent(formDescription); addComponent(form); form.setImmediate(false); form.setFooter(null); form.setDescription(null); String value; if ((value = node.getName()) != null) { name.setValue(value); } form.addField("name", name); name.focus(); name.setImmediate(true); name.addValidator(new NodeNameValidator(node.getName())); if ((value = node.getHostname()) != null) { hostname.setValue(value); } form.addField("hostname", hostname); if ((value = node.getInstanceID()) != null) { instanceID.setValue(value); } form.addField("instanceID", instanceID); if ((value = node.getPublicIP()) != null) { publicIP.setValue(value); } form.addField("publicIP", publicIP); if ((value = node.getPrivateIP()) != null) { privateIP.setValue(value); } form.addField("privateIP", privateIP); privateIP.setRequired(true); privateIP.setRequiredError("Private IP is a required field"); if (!isGalera) { if ((value = node.getDBUsername()) != null) { dbUsername.setValue(value); } form.addField("dbusername", dbUsername); dbUsername.setRequired(true); dbUsername.setImmediate(false); dbUsername.setRequiredError("Database Username is a required field"); dbUsername.addValidator(new UserNotRootValidator(dbUsername.getCaption())); if ((value = node.getDBPassword()) != null) { dbPassword.setValue(value); } form.addField("dbpassword", dbPassword); dbPassword.setRequired(true); dbPassword.setImmediate(false); dbPassword.setRequiredError("Database Password is a required field"); if ((value = node.getDBPassword()) != null) { dbPassword2.setValue(value); } form.addField("dbpassword2", dbPassword2); dbPassword2.setRequired(true); dbPassword2.setImmediate(true); dbPassword2.setRequiredError("Confirm Password is a required field"); dbPassword2.addValidator(new Password2Validator(dbPassword)); if ((value = node.getRepUsername()) != null) { repUsername.setValue(value); } form.addField("repusername", repUsername); repUsername.setRequired(true); repUsername.setImmediate(false); repUsername.setRequiredError("Replication Username is a required field"); repUsername.addValidator(new UserNotRootValidator(repUsername.getCaption())); if ((value = node.getRepPassword()) != null) { repPassword.setValue(value); } form.addField("reppassword", repPassword); repPassword.setRequired(true); repPassword.setImmediate(false); repPassword.setRequiredError("Replication Password is a required field"); if ((value = node.getRepPassword()) != null) { repPassword2.setValue(value); } form.addField("reppassword2", repPassword2); repPassword2.setRequired(true); repPassword2.setImmediate(true); repPassword2.setRequiredError("Confirm Password is a required field"); repPassword2.addValidator(new Password2Validator(repPassword)); } if (node.getID() == null) { Layout layout = form.getLayout(); { Label spacer = new Label(); spacer.setWidth("40px"); layout.addComponent(spacer); } HorizontalLayout optionLayout = new HorizontalLayout(); optionLayout.addStyleName("formInfoLayout"); optionLayout.setSpacing(true); optionLayout.setSizeUndefined(); layout.addComponent(optionLayout); Label padding = new Label("\u00A0\u00A0\u00A0\u00A0\u00A0\u00A0"); optionLayout.addComponent(padding); Embedded info2 = new Embedded(null, new ThemeResource("img/info.png")); info2.addStyleName("infoButton"); info2.setDescription(connectionInfo); optionLayout.addComponent(info2); final Validator validator = new Password2Validator(connectPassword); final OptionGroup connectOption = new OptionGroup("Connection options"); connectOption.setSizeUndefined(); connectOption.addItem(false); connectOption.setItemCaption(false, "Node is not available, user will run connect later"); connectOption.addItem(true); connectOption.setItemCaption(true, "Node is available now, connect automatically"); connectOption.setImmediate(true); connectOption.addValueChangeListener(new Property.ValueChangeListener() { private static final long serialVersionUID = 0x4C656F6E6172646FL; @Override public void valueChange(ValueChangeEvent event) { runConnect = (Boolean) event.getProperty().getValue(); passwordOption.setVisible(runConnect); connectPassword.setRequired(runConnect && usePassword); connectPassword2.setRequired(runConnect && usePassword); connectKey.setRequired(runConnect && !usePassword); if (!runConnect) { connectPassword.setVisible(false); connectPassword2.setVisible(false); connectPassword2.removeValidator(validator); connectKey.setVisible(false); } else { if (usePassword) { connectPassword.setVisible(true); connectPassword2.setVisible(true); connectPassword2.addValidator(validator); } else { connectKey.setVisible(true); } } form.setComponentError(null); form.setValidationVisible(false); } }); optionLayout.addComponent(connectOption); optionLayout.setComponentAlignment(connectOption, Alignment.MIDDLE_LEFT); connectOption.select(true); passwordOption.addItem(true); passwordOption.setItemCaption(true, "Authenticate with root user"); passwordOption.addItem(false); passwordOption.setItemCaption(false, "Authenticate with SSH Key"); passwordOption.setImmediate(true); passwordOption.addValueChangeListener(new Property.ValueChangeListener() { private static final long serialVersionUID = 0x4C656F6E6172646FL; @Override public void valueChange(ValueChangeEvent event) { usePassword = (Boolean) event.getProperty().getValue(); if (usePassword) { connectPassword2.addValidator(validator); } else { connectPassword2.removeValidator(validator); } connectPassword.setVisible(usePassword); connectPassword.setRequired(usePassword); connectPassword2.setVisible(usePassword); connectPassword2.setRequired(usePassword); connectKey.setVisible(!usePassword); connectKey.setRequired(!usePassword); form.setComponentError(null); form.setValidationVisible(false); } }); layout.addComponent(passwordOption); passwordOption.select(false); form.addField("connectPassword", connectPassword); connectPassword.setImmediate(false); connectPassword.setRequiredError("Root Password is a required field"); form.addField("connectPassword2", connectPassword2); connectPassword2.setImmediate(true); connectPassword2.setRequiredError("Confirm Password is a required field"); form.addField("connectKey", connectKey); connectKey.setStyleName("sshkey"); connectKey.setColumns(41); connectKey.setRequiredError("SSH Key is a required field"); } } /* (non-Javadoc) * @see com.vaadin.ui.AbstractComponent#setDescription(java.lang.String) */ public void setDescription(String description) { form.setDescription(description); } /** * Validate node. * * @return true, if successful */ public boolean validateNode() { try { form.setComponentError(null); form.commit(); node.setName(name.getValue()); node.setHostname(hostname.getValue()); node.setInstanceID(instanceID.getValue()); node.setPublicIP(publicIP.getValue()); node.setPrivateIP(privateIP.getValue()); if (!isGalera) { node.setDBUsername(dbUsername.getValue()); node.setDBPassword(dbPassword.getValue()); node.setRepUsername(repUsername.getValue()); node.setRepPassword(repPassword.getValue()); } if (runConnect) { // get and validate password or key logic, or do nothing connectKey.validate(); } return true; } catch (EmptyValueException e) { return false; } catch (InvalidValueException e) { return false; } catch (Exception e) { ManagerUI.error(e.getMessage()); return false; } } }