001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.welcome;
018
019 import java.io.IOException;
020 import java.net.URL;
021 import java.util.Set;
022 import javax.security.auth.login.FailedLoginException;
023 import javax.servlet.RequestDispatcher;
024 import javax.servlet.ServletException;
025 import javax.servlet.http.HttpServlet;
026 import javax.servlet.http.HttpServletRequest;
027 import javax.servlet.http.HttpServletResponse;
028 import org.apache.geronimo.gbean.AbstractName;
029 import org.apache.geronimo.gbean.AbstractNameQuery;
030 import org.apache.geronimo.kernel.Kernel;
031 import org.apache.geronimo.kernel.KernelRegistry;
032 import org.apache.geronimo.kernel.config.ConfigurationUtil;
033 import org.apache.geronimo.kernel.config.ConfigurationManager;
034 import org.apache.geronimo.kernel.config.NoSuchConfigException;
035 import org.apache.geronimo.kernel.config.LifecycleException;
036 import org.apache.geronimo.kernel.repository.Artifact;
037 import org.apache.geronimo.system.plugin.PluginInstaller;
038 import org.apache.geronimo.system.plugin.PluginList;
039 import org.apache.geronimo.system.plugin.PluginMetadata;
040 import org.apache.geronimo.system.plugin.PluginRepositoryList;
041 import org.apache.geronimo.system.plugin.DownloadResults;
042
043 /**
044 * Stands in for servlets that are not yet installed, offering to install them.
045 *
046 * @version $Rev: 476061 $ $Date: 2006-11-17 01:36:50 -0500 (Fri, 17 Nov 2006) $
047 */
048 public class AbsentSampleServlet extends HttpServlet {
049 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
050 String install = request.getParameter("install");
051 if(install != null && !install.equals("")) {
052 doInstall(request, response);
053 } else {
054 doMessage(request, response);
055 }
056 }
057
058 private void doMessage(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
059 RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/sampleNotInstalled.jsp");
060 dispatcher.forward(request, response);
061 }
062
063 private void doInstall(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
064 Kernel kernel = KernelRegistry.getSingleKernel();
065 PluginInstaller installer = getPluginInstaller(kernel);
066 String moduleIdName = getInitParameter("moduleId");
067 moduleIdName = moduleIdName.replaceAll("SERVER", getServerType());
068 URL repo = getFirstPluginRepository(kernel);
069 PluginMetadata target = new PluginMetadata("Sample Application", null, "Samples", "A sample application",
070 null, null, null, false, true);
071 target.setDependencies(new String[]{moduleIdName});
072 DownloadResults results = installer.install(new PluginList(new URL[]{repo, new URL("http://www.ibiblio.org/maven2/")},
073 new PluginMetadata[]{target}), null, null);
074 if(results.isFailed()) {
075 throw new ServletException("Unable to install sample application", results.getFailure());
076 }
077 ConfigurationManager mgr = ConfigurationUtil.getConfigurationManager(kernel);
078 for (int i = 0; i < results.getInstalledConfigIDs().length; i++) {
079 Artifact artifact = results.getInstalledConfigIDs()[i];
080 if(mgr.isConfiguration(artifact)) {
081 try {
082 if(!mgr.isLoaded(artifact)) {
083 mgr.loadConfiguration(artifact);
084 }
085 if(!mgr.isRunning(artifact)) {
086 mgr.startConfiguration(artifact);
087 }
088 } catch (NoSuchConfigException e) {
089 throw new ServletException("Unable to start sample application", e);
090 } catch (LifecycleException e) {
091 throw new ServletException("Unable to start sample application", e);
092 }
093 }
094 }
095 response.sendRedirect(request.getContextPath()+request.getServletPath()+"/");
096 }
097
098 private String getServerType() {
099 return getServletContext().getServerInfo().toLowerCase().indexOf("jetty") > -1 ? "jetty" : "tomcat";
100 }
101
102 private PluginInstaller getPluginInstaller(Kernel kernel) throws ServletException {
103 Set installers = kernel.listGBeans(new AbstractNameQuery(PluginInstaller.class.getName()));
104 if(installers.size() == 0) {
105 throw new ServletException("Unable to install sample application; no plugin installer found");
106 }
107 return (PluginInstaller)kernel.getProxyManager().createProxy((AbstractName) installers.iterator().next(),
108 PluginInstaller.class);
109 }
110
111 private URL getFirstPluginRepository(Kernel kernel) throws ServletException {
112 Set installers = kernel.listGBeans(new AbstractNameQuery(PluginRepositoryList.class.getName()));
113 if(installers.size() == 0) {
114 throw new ServletException("Unable to install sample application; no plugin repository list found");
115 }
116 PluginRepositoryList repos = ((PluginRepositoryList) kernel.getProxyManager().createProxy((AbstractName) installers.iterator().next(),
117 PluginRepositoryList.class));
118
119 URL[] urls = repos.getRepositories();
120 if(urls.length == 0) {
121 repos.refresh();
122 urls = repos.getRepositories();
123 if(urls.length == 0) {
124 throw new ServletException("Unable to install sample applicatoin; unable to download repository list");
125 }
126 }
127 return urls[0];
128 }
129 }