Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. */ package com.googlecode.osde.internal.shindig; import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.StringWriter; import com.googlecode.osde.internal.Activator; import com.googlecode.osde.internal.OsdeConfig; import com.googlecode.osde.internal.common.ExternalAppException; import com.googlecode.osde.internal.utils.Logger; import org.apache.commons.io.IOUtils; import org.apache.commons.lang.StringUtils; import org.apache.shindig.social.opensocial.hibernate.utils.HibernateUtils; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IWorkbenchPart; public class ShindigLauncher { private static final Logger logger = new Logger(ShindigLauncher.class); public static boolean launchWithConfirm(Shell shell, final IWorkbenchPart targetPart) { if (MessageDialog.openConfirm(shell, "Confirm", "Shindig not started yet. Would you like to start Shindig?")) { ShindigLauncher.launch(shell, targetPart); return true; } else { return false; } } public static void launch(Shell shell, final IWorkbenchPart targetPart) { Activator.getDefault().setRunningShindig(true); try { final ShindigServer shindig = new ShindigServer(); final DatabaseServer database = new DatabaseServer(); shindig.stop(); database.stop(); OsdeConfig config = Activator.getDefault().getOsdeConfiguration(); createConfigFileForHibernate(config); int delay = 0; // The following codes launch Database and then launch Shindig // If the user specifies an external database, we won't launch internal database // Launch Database for Shindig to connect to if (config.isUseInternalDatabase()) { shell.getDisplay().syncExec(new Runnable() { public void run() { try { database.start(); } catch (ExternalAppException e) { logger.error("Launching Shindig Database failed.", e); } } }); delay = 3000; } shell.getDisplay().timerExec(delay, new Runnable() { public void run() { Activator.getDefault().connect(targetPart.getSite().getWorkbenchWindow()); } }); // Launch Shindig container shell.getDisplay().timerExec(3000, new Runnable() { public void run() { try { shindig.start(); } catch (ExternalAppException e) { logger.error("Launching Apache Shindig failed.", e); } } }); } catch (ExternalAppException e) { logger.error("Launching Apache Shindig or Shindig Database failed.", e); } } private static void createConfigFileForHibernate(OsdeConfig config) { FileOutputStream fos = null; try { InputStreamReader in = new InputStreamReader( ShindigLauncher.class.getResourceAsStream("/shindig/osde_hibernate.cfg.xml.tmpl"), "UTF-8"); StringWriter out = new StringWriter(); IOUtils.copy(in, out); String code = out.toString(); if (config.isUseInternalDatabase()) { code = code.replace("$driver_class$", "org.h2.Driver"); code = code.replace("$url$", "jdbc:h2:tcp://localhost:9092/shindig"); code = code.replace("$username$", "sa"); code = code.replace("$password$", ""); code = code.replace("$dialect$", "H2"); String databaseDir = config.getDatabaseDir(); File dbFile = new File(databaseDir, "shindig.data.db"); code = code.replace("$hbm2ddl$", dbFile.isFile() ? "update" : "create"); } else { if (config.getExternalDatabaseType().equals("MySQL")) { code = code.replace("$driver_class$", "com.mysql.jdbc.Driver"); String url = "jdbc:mysql://"; url += config.getExternalDatabaseHost(); String port = config.getExternalDatabasePort(); if (StringUtils.isNotEmpty(port)) { url += ":" + port; } url += "/" + config.getExternalDatabaseName(); code = code.replace("$url$", url); code = code.replace("$username$", config.getExternalDatabaseUsername()); code = code.replace("$password$", config.getExternalDatabasePassword()); code = code.replace("$dialect$", "MySQL"); } else if (config.getExternalDatabaseType().equals("Oracle")) { code = code.replace("$driver_class$", "oracle.jdbc.driver.OracleDriver"); String url = "jdbc:oracle:thin:@"; url += config.getExternalDatabaseHost(); String port = config.getExternalDatabasePort(); if (StringUtils.isNotEmpty(port)) { url += ":" + port; } url += ":" + config.getExternalDatabaseName(); code = code.replace("$url$", url); code = code.replace("$username$", config.getExternalDatabaseUsername()); code = code.replace("$password$", config.getExternalDatabasePassword()); code = code.replace("$dialect$", "Oracle"); } } File file = new File(HibernateUtils.configFileDir, HibernateUtils.configFileName); fos = new FileOutputStream(file); ByteArrayInputStream bytes = new ByteArrayInputStream(code.getBytes("UTF-8")); IOUtils.copy(bytes, fos); } catch (IOException e) { logger.error("Creating the configuration file for H2Database failed.", e); throw new IllegalStateException(e); } finally { IOUtils.closeQuietly(fos); } } }