/* * Copyright 2000-2013 Vaadin Ltd. * * Licensed 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.vaadin.launcher; import java.io.File; import java.io.IOException; import java.net.MalformedURLException; import java.net.URI; import java.net.URISyntaxException; import java.net.URL; import java.util.Collections; import java.util.LinkedHashSet; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.vaadin.server.LegacyApplication; import com.vaadin.server.LegacyVaadinServlet; import com.vaadin.server.ServiceException; import com.vaadin.server.SessionInitEvent; import com.vaadin.server.SessionInitListener; import com.vaadin.server.UIClassSelectionEvent; import com.vaadin.server.UIProvider; import com.vaadin.server.VaadinRequest; import com.vaadin.server.VaadinServletRequest; import com.vaadin.server.VaadinSession; import com.vaadin.tests.components.TestBase; import com.vaadin.ui.UI; @SuppressWarnings("serial") public class ApplicationRunnerServlet extends LegacyVaadinServlet { /** * The name of the application class currently used. Only valid within one * request. */ private LinkedHashSet defaultPackages = new LinkedHashSet(); private transient final ThreadLocal request = new ThreadLocal(); @Override public void init(ServletConfig servletConfig) throws ServletException { super.init(servletConfig); String initParameter = servletConfig .getInitParameter("defaultPackages"); if (initParameter != null) { Collections.addAll(defaultPackages, initParameter.split(",")); } String str = TestBase.class.getName().replace('.', '/') + ".class"; URL url = getService().getClassLoader().getResource(str); if ("file".equals(url.getProtocol())) { String path = url.getPath(); try { path = new URI(path).getPath(); } catch (URISyntaxException e) { getLogger().log(Level.FINE, "Failed to decode url", e); } File comVaadinTests = new File(path).getParentFile() .getParentFile(); addDirectories(comVaadinTests, defaultPackages, "com.vaadin.tests"); } } @Override protected void servletInitialized() throws ServletException { super.servletInitialized(); getService().addSessionInitListener(new SessionInitListener() { @Override public void sessionInit(SessionInitEvent event) throws ServiceException { onVaadinSessionStarted(event.getRequest(), event.getSession()); } }); } private void addDirectories(File parent, LinkedHashSet packages, String parentPackage) { packages.add(parentPackage); for (File f : parent.listFiles()) { if (f.isDirectory()) { String newPackage = parentPackage + "." + f.getName(); addDirectories(f, packages, newPackage); } } } @Override protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.request.set(request); try { super.service(request, response); } finally { this.request.set(null); } } @Override protected URL getApplicationUrl(HttpServletRequest request) throws MalformedURLException { URL url = super.getApplicationUrl(request); String path = url.toString(); path += getApplicationRunnerApplicationClassName(request); path += "/"; return new URL(path); } @Override protected Class getApplicationClass() throws ClassNotFoundException { return getClassToRun().asSubclass(LegacyApplication.class); } @Override protected boolean shouldCreateApplication(HttpServletRequest request) throws ServletException { try { return LegacyApplication.class.isAssignableFrom(getClassToRun()); } catch (ClassNotFoundException e) { throw new ServletException(e); } } protected void onVaadinSessionStarted(VaadinRequest request, VaadinSession session) throws ServiceException { try { final Class classToRun = getClassToRun(); if (UI.class.isAssignableFrom(classToRun)) { session.addUIProvider(new ApplicationRunnerUIProvider( classToRun)); } else if (LegacyApplication.class.isAssignableFrom(classToRun)) { // Avoid using own UIProvider for legacy Application } else if (UIProvider.class.isAssignableFrom(classToRun)) { session.addUIProvider((UIProvider) classToRun.newInstance()); } else { throw new ServiceException(classToRun.getCanonicalName() + " is neither an Application nor a UI"); } } catch (final IllegalAccessException e) { throw new ServiceException(e); } catch (final InstantiationException e) { throw new ServiceException(e); } catch (final ClassNotFoundException e) { throw new ServiceException( new InstantiationException( "Failed to load application class: " + getApplicationRunnerApplicationClassName((VaadinServletRequest) request))); } } private String getApplicationRunnerApplicationClassName( HttpServletRequest request) { return getApplicationRunnerURIs(request).applicationClassname; } private static final class ApplicationRunnerUIProvider extends UIProvider { private final Class classToRun; private ApplicationRunnerUIProvider(Class classToRun) { this.classToRun = classToRun; } @Override public Class getUIClass(UIClassSelectionEvent event) { return (Class) classToRun; } } // TODO Don't need to use a data object now that there's only one field private static class URIS { // String staticFilesPath; // String applicationURI; // String context; // String runner; String applicationClassname; } /** * Parses application runner URIs. * * If request URL is e.g. * http://localhost:8080/vaadin/run/com.vaadin.demo.Calc then *
    *
  • context=vaadin
    • *
  • Runner servlet=run
    • *
  • Vaadin application=com.vaadin.demo.Calc
    • *
* * @param request * @return string array containing widgetset URI, application URI and * context, runner, application classname */ private static URIS getApplicationRunnerURIs(HttpServletRequest request) { final String[] urlParts = request.getRequestURI().toString() .split("\\/"); // String runner = null; URIS uris = new URIS(); String applicationClassname = null; String contextPath = request.getContextPath(); if (urlParts[1].equals(contextPath.replaceAll("\\/", ""))) { // class name comes after web context and runner application // runner = urlParts[2]; if (urlParts.length == 3) { throw new IllegalArgumentException("No application specified"); } applicationClassname = urlParts[3]; // uris.applicationURI = "/" + context + "/" + runner + "/" // + applicationClassname; // uris.context = context; // uris.runner = runner; uris.applicationClassname = applicationClassname; } else { // no context // runner = urlParts[1]; if (urlParts.length == 2) { throw new IllegalArgumentException("No application specified"); } applicationClassname = urlParts[2]; // uris.applicationURI = "/" + runner + "/" + applicationClassname; // uris.context = context; // uris.runner = runner; uris.applicationClassname = applicationClassname; } return uris; } private Class getClassToRun() throws ClassNotFoundException { // TODO use getClassLoader() ? Class appClass = null; String baseName = getApplicationRunnerApplicationClassName(request .get()); try { appClass = getClass().getClassLoader().loadClass(baseName); return appClass; } catch (Exception e) { // for (String pkg : defaultPackages) { try { appClass = getClass().getClassLoader().loadClass( pkg + "." + baseName); } catch (ClassNotFoundException ee) { // Ignore as this is expected for many packages } catch (Exception e2) { // TODO: handle exception getLogger().log( Level.FINE, "Failed to find application class " + pkg + "." + baseName, e2); } if (appClass != null) { return appClass; } } } throw new ClassNotFoundException(); } private Logger getLogger() { return Logger.getLogger(ApplicationRunnerServlet.class.getName()); } } n74'>74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163