Java tutorial
/* * Copyright 2011-15 Fraunhofer ISE * * This file is part of OpenMUC. * For more information visit http://www.openmuc.org * * OpenMUC 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. * * OpenMUC 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 OpenMUC. If not, see <http://www.gnu.org/licenses/>. * */ package org.openmuc.framework.webui.bundleconfigurator; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.openmuc.framework.webui.spi.*; import org.osgi.framework.Bundle; import org.osgi.framework.BundleContext; import org.osgi.framework.BundleException; import org.osgi.service.cm.ConfigurationAdmin; import org.osgi.service.component.ComponentContext; import org.osgi.service.metatype.MetaTypeService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.URL; import java.util.Dictionary; import java.util.Hashtable; import java.util.List; /* * For a president store osgi.clean must be set to false * * osgi.clean=false * * and you can not use org.ops4j.pax.configmanager * */ public final class BundleConfigurator implements WebUiPluginService { private final static Logger logger = LoggerFactory.getLogger(BundleConfigurator.class); private BundleContext context; private ResourceLoader loader; private String message = null; private MetaTypeService metaTypeService; private ConfigurationAdmin configAdmin; protected void activate(ComponentContext context) { this.context = context.getBundleContext(); loader = new ResourceLoader(context.getBundleContext()); message = null; } public void stop(BundleContext bc) throws Exception { } @Override public Hashtable<String, String> getResources() { Hashtable<String, String> resources = new Hashtable<String, String>(); resources.put("css", "css"); return resources; } @Override public String getAlias() { return "bundleconfigurator"; } @Override public String getName() { return "Bundle Configurator"; } @Override public String getDescription() { return "Configuration utility for the OSGI bundles."; } @Override public View getContentView(HttpServletRequest request, PluginContext pluginContext) { if (pluginContext.getLocalPath().equals("/edit")) { Bundle bundle = getBundleById(request.getParameter("id")); BundleConfiguration bundleConfiguration = null; try { bundleConfiguration = new BundleConfiguration(bundle, configAdmin, metaTypeService); } catch (Exception e) { message = "Error: " + e.getMessage(); return new RedirectView(pluginContext.getApplicationPath()); } return new ConfigurationView(bundle, bundleConfiguration, metaTypeService, loader); } else if (pluginContext.getLocalPath().equals("/changebundle")) { String id = request.getParameter("id"); Bundle bundle = getBundleById(id); try { BundleConfiguration bundleConfiguration = new BundleConfiguration(bundle, configAdmin, metaTypeService); Dictionary<String, String> bundleProperties = new Hashtable<String, String>(); String[] keys = request.getParameterValues("keyList"); if (keys != null) { for (String key : keys) { String value = request.getParameter(key + "Property"); if (value != null && !value.isEmpty()) { bundleProperties.put(key, request.getParameter(key + "Property")); } } } String newkey = request.getParameter("newkey"); if (!newkey.equals("")) { bundleProperties.put(newkey, request.getParameter("newkeyProperty")); } bundleConfiguration.setBundleProperties(bundleProperties); return new RedirectView(pluginContext.getApplicationPath() + "/edit?id=" + id); } catch (Exception e) { message = "Error: " + e.getMessage(); return new RedirectView(pluginContext.getApplicationPath()); } } else if (pluginContext.getLocalPath().equals("/install")) { installBundle(request, pluginContext); return new RedirectView(pluginContext.getApplicationPath()); } else if (pluginContext.getLocalPath().equals("/uninstall")) { Bundle bundle = getBundleById(request.getParameter("id")); if (bundle != null) { try { message = "Info: " + bundle.getSymbolicName() + " uninstalled"; bundle.uninstall(); } catch (BundleException e) { message = "Error: " + e.getMessage(); } } return new RedirectView(pluginContext.getApplicationPath()); } else if (pluginContext.getLocalPath().equals("/update")) { Bundle bundle = getBundleById(request.getParameter("id")); if (bundle != null) { try { message = "Info: " + bundle.getSymbolicName() + " updated"; bundle.update(); } catch (BundleException e) { message = "Error: " + e.getMessage(); } } return new RedirectView(pluginContext.getApplicationPath()); } else if (pluginContext.getLocalPath().equals("/stop")) { Bundle bundle = getBundleById(request.getParameter("id")); if (bundle != null) { try { message = "Info: " + bundle.getSymbolicName() + " stoped"; bundle.stop(); } catch (BundleException e) { message = "Error: " + e.getMessage(); } } return new RedirectView(pluginContext.getApplicationPath()); } else if (pluginContext.getLocalPath().equals("/start")) { Bundle bundle = getBundleById(request.getParameter("id")); if (bundle != null) { try { message = "Info: " + bundle.getSymbolicName() + " started"; bundle.start(); } catch (BundleException e) { message = "Error: " + e.getMessage(); } } return new RedirectView(pluginContext.getApplicationPath()); } else { String temp = message; message = null; return new BundleListView(context, loader, temp); } } private Bundle getBundleById(String idString) { if (idString != null) { long id = new Long(idString); return context.getBundle(id); } else { return null; } } private void installBundle(HttpServletRequest request, PluginContext pluginContext) { if (ServletFileUpload.isMultipartContent(request)) { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); try { List<?> files = upload.parseRequest(request); byte[] buffer = new byte[8192]; for (Object name : files) { FileItem element = (FileItem) name; if (!element.isFormField()) { String fileName = element.getName(); if (!fileName.endsWith(".jar")) { throw new FileUploadException("Wrong data type. Needs to be a \".jar\"."); } fileName = fileName.replace('\\', '/'); // Windows stub if (fileName.contains("/")) { fileName = fileName.substring('/' + 1); } InputStream is = element.getInputStream(); FileOutputStream fos = new FileOutputStream(new File("bundle", fileName)); int len = 0; while ((len = is.read(buffer)) > 0) { fos.write(buffer, 0, len); } fos.flush(); fos.close(); is.close(); context.installBundle("file:bundle/" + fileName); message = "Info: Installed Bundle " + fileName; } } } catch (Exception e) { message = "Error: " + e.getMessage(); } } } @Override public boolean handleSecurity(HttpServletRequest request, HttpServletResponse response) throws IOException { return true; } @Override public URL getResource(String name) { return context.getBundle().getResource(name); } @Override public String getMimeType(String name) { return null; } @Override public PluginCategory getCategory() { return PluginCategory.CONFIGTOOL; } protected void setMetaTypeService(MetaTypeService service) { metaTypeService = service; } protected void unsetMetaTypeService(MetaTypeService service) { metaTypeService = null; } protected void setConfigurationAdmin(ConfigurationAdmin service) { configAdmin = service; } protected void unsetConfigurationAdmin(ConfigurationAdmin service) { configAdmin = null; } }