Java tutorial
/** * Copyright (C) 2013, Moss Computing Inc. * * This file is part of appsnap. * * appsnap 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 2, or (at your option) * any later version. * * appsnap 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 appsnap; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301 USA. * * Linking this library statically or dynamically with other modules is * making a combined work based on this library. Thus, the terms and * conditions of the GNU General Public License cover the whole * combination. * * As a special exception, the copyright holders of this library give you * permission to link this library with independent modules to produce an * executable, regardless of the license terms of these independent * modules, and to copy and distribute the resulting executable under * terms of your choice, provided that you also meet, for each linked * independent module, the terms and conditions of the license of that * module. An independent module is a module which is not derived from * or based on this library. If you modify this library, you may extend * this exception to your version of the library, but you are not * obligated to do so. If you do not wish to do so, delete this * exception statement from your version. */ package com.moss.appsnap.server; import java.io.File; import javax.xml.bind.JAXBContext; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.log4j.BasicConfigurator; import org.apache.log4j.Level; import org.apache.log4j.Logger; import org.apache.log4j.xml.DOMConfigurator; import org.mortbay.jetty.Server; import org.mortbay.jetty.nio.SelectChannelConnector; import org.mortbay.log.Slf4jLog; import com.moss.appsnap.api.AppsnapService; import com.moss.appsnap.server.config.AdministratorConfig; import com.moss.appsnap.server.config.ServerConfiguration; import com.moss.appsnap.server.installables.javaapplets.AppletPublisher; import com.moss.appsnap.server.security.PasswordCheckerImpl; import com.moss.appsnap.server.security.UserAccount; import com.moss.bdbadmin.core.AuthorizationLevel; import com.moss.bdbadmin.core.Authorizer; import com.moss.bdbadmin.core.BdbCategory; import com.moss.bdbadmin.core.BdbEnv; import com.moss.bdbadmin.core.BdbPrimaryDb; import com.moss.bdbadmin.core.BdbSecondaryDb; import com.moss.bdbadmin.core.BdbService; import com.moss.bdbadmin.jetty.BdbAdminJettyAdapter; import com.moss.bdbwrap.DbWrap; import com.moss.bdbwrap.EnvironmentWrap; import com.moss.bdbwrap.SecondaryDbWrap; import com.moss.identity.Id; import com.moss.identity.simple.SimpleId; import com.moss.identity.simple.SimpleIdIdToolPlugin; import com.moss.identity.simple.SimpleIdProover; import com.moss.identity.standard.PasswordIdProofCheckRecipe; import com.moss.identity.standard.PasswordProofRecipie; import com.moss.identity.tools.IdProover; import com.moss.identity.tools.IdTool; import com.moss.identity.veracity.VeracityId; import com.moss.identity.veracity.VeracityIdToolPlugin; import com.moss.jaxbhelper.JAXBHelper; import com.moss.rpcutil.jetty.SwitchingContentHandler; import com.moss.rpcutil.jetty.hessian.HessianContentHandler; import com.moss.rpcutil.proxy.ProxyFactory; import com.moss.rpcutil.proxy.hessian.HessianProxyProvider; import com.sleepycat.je.LockMode; public class AppSnapServer { public static void main(String[] args) throws Exception { System.setProperty("org.mortbay.log.class", Slf4jLog.class.getName()); File log4jConfigFile = new File("log4j.xml"); if (log4jConfigFile.exists()) { DOMConfigurator.configureAndWatch(log4jConfigFile.getAbsolutePath(), 1000); } else { BasicConfigurator.configure(); Logger.getRootLogger().setLevel(Level.INFO); } ServerConfiguration config; JAXBContext context = JAXBContext.newInstance(ServerConfiguration.class, VeracityId.class); JAXBHelper helper = new JAXBHelper(context); Logger log = Logger.getLogger(AppSnapServer.class); File[] configPaths = new File[] { new File("settings.xml"), new File(new File(System.getProperty("user.home")), ".appsnap-server.xml"), new File("/etc/appsnap-server.xml") }; File configFile = null; for (File next : configPaths) { if (next.exists()) { configFile = next; } } if (configFile == null) { log.warn("No config file found."); for (int x = configPaths.length - 1; x >= 0; x--) { File next = configPaths[x]; log.warn("Attempting to create default config file at " + next.getAbsolutePath()); ServerConfiguration defaults = new ServerConfiguration(); defaults.idProofRecipie( new PasswordProofRecipie(new SimpleId("mr-admin-dude"), "my-super-secret-password")); try { helper.writeToFile(helper.writeToXmlString(defaults), next); log.warn("done"); break; } catch (Exception e) { log.warn("Error writing file: " + e.getMessage(), e); } } System.exit(1); return; } else { log.info("Reading configuration from " + configFile.getAbsolutePath()); config = helper.readFromFile(configFile); } ProxyFactory proxyFactory = new ProxyFactory(new HessianProxyProvider()); try { new AppSnapServer(config, proxyFactory); } catch (Exception e) { e.printStackTrace(); System.out.println("Unexpected Error. Shutting Down."); System.exit(1); } } private final Log log = LogFactory.getLog(getClass()); private final Server jetty; private final Data data; private final IdProover idProover; private final IdTool idTool; public AppSnapServer(final ServerConfiguration config, final ProxyFactory proxyFactory) { try { config.validate(); log.info("Launching service " + config.serviceId()); jetty = new Server(); SelectChannelConnector connector = new SelectChannelConnector(); connector.setPort(config.publishPort()); connector.setHost(config.bindAddress()); jetty.addConnector(connector); data = new Data(new File(config.storageDir(), "bdb-data"), new Long(10 * 1024 * 100 /*10mb*/)); {// ADMINISTRATOR BOOTSTRAPPING MECHANISM for (AdministratorConfig admin : config.administrators()) { UserAccount user = data.userAccounts.get(admin.authenticationId(), null, LockMode.READ_COMMITTED); if (user == null) { log.warn("Bootstrapping admin account for " + admin.authenticationId()); user = new UserAccount(new PasswordIdProofCheckRecipe(admin.authenticationId(), admin.idProofRecipie().password().getPassword())); user.setAdministrator(true); } if (!user.isAdministrator()) { log.warn("Promoting account " + admin.authenticationId() + " to administrator"); user.setAdministrator(true); } data.userAccounts.put(user.id(), user, null); data.passwords.put(admin.authenticationId().toString(), admin.idProofRecipie().password().getPassword(), null); } } {// IDENTITY TOOLS idProover = new SimpleIdProover((SimpleId) config.idProofRecipie().id(), config.idProofRecipie().password()); idTool = new IdTool(new SimpleIdIdToolPlugin(new PasswordCheckerImpl(config, data)), new VeracityIdToolPlugin(proxyFactory)); } {// MAIN RPC SERVICE AppsnapServiceImpl mapService = new AppsnapServiceImpl(data, config, idTool, idProover, proxyFactory); String path = "/rpc"; SwitchingContentHandler handler = new SwitchingContentHandler(path); // handler.addHandler(new JAXWSContentHandler(path, mapService)); handler.addHandler(new HessianContentHandler(AppsnapService.class, mapService)); jetty.addHandler(handler); } {// BDBADMIN SERVICE BdbService service = new BdbService(buildBdbadminTree(data), new BdbAdminAuthorizer(data), proxyFactory); jetty.addHandler(new BdbAdminJettyAdapter("/bdbadmin", service)); } { jetty.addHandler(new AppletPublisher(data, proxyFactory, config, idProover)); } jetty.start(); log.info("SERVER READY FOR ACTION"); } catch (Exception e) { throw new RuntimeException(e); } } private static class BdbAdminAuthorizer implements Authorizer { private final Data data; public BdbAdminAuthorizer(Data data) { super(); this.data = data; } public AuthorizationLevel authorize(Id identity) { UserAccount userAccount = data.userAccounts.get(identity, null, LockMode.READ_COMMITTED); if (userAccount != null && userAccount.isAdministrator()) { return AuthorizationLevel.READ_WRITE; } else { return AuthorizationLevel.NONE; } } } private BdbCategory buildBdbadminTree(EnvironmentWrap data) { BdbEnv e = new BdbEnv(); e.setName("data"); e.setEnv(data.env); for (DbWrap<?, ?> next : data.databases()) { BdbPrimaryDb primary = new BdbPrimaryDb(next.name, next.db, e); e.databases().add(primary); for (SecondaryDbWrap<?, ?> s : next.secondaries) { BdbSecondaryDb secondary = new BdbSecondaryDb(s.name, s.db, primary, e); e.databases().add(secondary); } } BdbCategory root = new BdbCategory("root"); root.environments().add(e); return root; } public void shutdown() throws Exception { log.info("Shutting down"); jetty.stop(); data.close(); log.info("Exit"); } }