/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a full listing
* of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* BasicClient.java
*
* Copyright (c) 2003, 2004 Arjuna Technologies Ltd.
*
* $Id: BasicClient.java,v 1.10 2004/12/02 16:52:58 kconner Exp $
*
*/
package com.arjuna.xts.nightout.clients.jboss;
import java.io.IOException;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.rpc.Service;
import javax.xml.rpc.ServiceException;
import javax.xml.rpc.Stub;
import com.arjuna.mw.wst.UserBusinessActivity;
import com.arjuna.mw.wst.UserBusinessActivityFactory;
import com.arjuna.mw.wst.UserTransaction;
import com.arjuna.mw.wst.UserTransactionFactory;
import com.arjuna.wst.TransactionRolledBackException;
import com.arjuna.xts.nightout.clients.jboss.restaurant.IRestaurantServiceAT;
import com.arjuna.xts.nightout.clients.jboss.restaurant.IRestaurantServiceBA;
import com.arjuna.xts.nightout.clients.jboss.taxi.ITaxiServiceAT;
import com.arjuna.xts.nightout.clients.jboss.taxi.ITaxiServiceBA;
import com.arjuna.xts.nightout.clients.jboss.theatre.ITheatreServiceAT;
import com.arjuna.xts.nightout.clients.jboss.theatre.ITheatreServiceBA;
/**
* A very basic client application that drives the
* (transactional) Web Services to arrange a night out.
*
* @author Jonathan Halliday (jonathan.halliday@arjuna.com)
* @version $Id: BasicClient.java,v 1.10 2004/12/02 16:52:58 kconner Exp $
*/
public class BasicClient extends HttpServlet
{
/**
* The client serial version UID.
*/
private static final long serialVersionUID = 7728495576623420083L ;
/**
* The servlet context.
*/
private ServletContext context ;
/**
* The local context name for the AT Restaurant webservice.
*/
private static final String RESTAURANT_SERVICE_AT = "java:comp/env/service/RestaurantServiceAT" ;
/**
* The local context name for the BA Restaurant webservice.
*/
private static final String RESTAURANT_SERVICE_BA = "java:comp/env/service/RestaurantServiceBA" ;
/**
* The local context name for the AT Theatre webservice.
*/
private static final String THEATRE_SERVICE_AT = "java:comp/env/service/TheatreServiceAT" ;
/**
* The local context name for the BA Theatre webservice.
*/
private static final String THEATRE_SERVICE_BA = "java:comp/env/service/TheatreServiceBA" ;
/**
* The local context name for the AT Taxi webservice.
*/
private static final String TAXI_SERVICE_AT = "java:comp/env/service/TaxiServiceAT" ;
/**
* The local context name for the BA Taxi webservice.
*/
private static final String TAXI_SERVICE_BA = "java:comp/env/service/TaxiServiceBA" ;
/**
* The atomic transaction restaurant stub.
*/
private IRestaurantServiceAT restaurantAT;
/**
* The atomic transaction theatre stub.
*/
private ITheatreServiceAT theatreAT;
/**
* The atomic transaction taxi stub.
*/
private ITaxiServiceAT taxiAT;
/**
* The business activity restaurant stub.
*/
private IRestaurantServiceBA restaurantBA;
/**
* The business activity theatre stub.
*/
private ITheatreServiceBA theatreBA;
/**
* The business activity taxi stub.
*/
private ITaxiServiceBA taxiBA;
/**
* URL of restaurant AT
*/
private String restaurantATURL ;
/**
* URL of restaurant BA
*/
private String restaurantBAURL ;
/**
* URL of taxi AT
*/
private String taxiATURL ;
/**
* URL of taxi BA
*/
private String taxiBAURL ;
/**
* URL of theatre AT
*/
private String theatreATURL ;
/**
* URL of theatre BA
*/
private String theatreBAURL ;
/**
* The initialised flag.
*/
private boolean initialised ;
/**
* Initialise the servlet.
* @param servletConfig The servlet configuration.
*/
public void init(final ServletConfig config)
throws ServletException
{
final String baseURL = "http://localhost:8080/xtsdemowebservicesrpc/" ;
restaurantATURL = getURL(config, "restaurantATURL", baseURL + "RestaurantServiceAT") ;
restaurantBAURL = getURL(config, "restaurantBAURL", baseURL + "RestaurantServiceBA") ;
taxiATURL = getURL(config, "taxiATURL", baseURL + "TaxiServiceAT") ;
taxiBAURL = getURL(config, "taxiBAURL", baseURL + "TaxiServiceBA") ;
theatreATURL = getURL(config, "theatreATURL", baseURL + "TheatreServiceAT") ;
theatreBAURL = getURL(config, "theatreBAURL", baseURL + "TheatreServiceBA") ;
context = config.getServletContext();
}
/**
* Initialise if necessary
*/
private synchronized void initialise()
throws ServletException
{
if (!initialised)
{
try
{
restaurantAT = (IRestaurantServiceAT)getService(RESTAURANT_SERVICE_AT, restaurantATURL, IRestaurantServiceAT.class) ;
restaurantBA = (IRestaurantServiceBA)getService(RESTAURANT_SERVICE_BA, restaurantBAURL, IRestaurantServiceBA.class) ;
taxiAT = (ITaxiServiceAT)getService(TAXI_SERVICE_AT, taxiATURL, ITaxiServiceAT.class) ;
taxiBA = (ITaxiServiceBA)getService(TAXI_SERVICE_BA, taxiBAURL, ITaxiServiceBA.class) ;
theatreAT = (ITheatreServiceAT)getService(THEATRE_SERVICE_AT, theatreATURL, ITheatreServiceAT.class) ;
theatreBA = (ITheatreServiceBA)getService(THEATRE_SERVICE_BA, theatreBAURL, ITheatreServiceBA.class) ;
}
catch (final Exception ex)
{
ex.printStackTrace();
throw new ServletException(ex);
}
initialised = true ;
}
}
/**
* Simple wrapper to allow our test method to be invoked when
* running in a servlet container, taking parameters from the
* request URL and displaying the outcome on the resulting html page.
*
* @param request
* @param response
* @throws ServletException
* @throws IOException
*/
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
initialise() ;
// get business logic params from the form submission.
int restaurantSeats = Integer.parseInt(request.getParameter("restaurant"));
int theatreSeats = Integer.parseInt(request.getParameter("theatrecount"));
int theatreArea = Integer.parseInt(request.getParameter("theatrearea"));
int taxiCount = Integer.parseInt(request.getParameter("taxi"));
boolean bookTaxi = (taxiCount >= 1 ? true : false);
String result = "Transaction finished OK.";
String txType = request.getParameter("txType");
try
{
if ("AtomicTransaction".equals(txType))
{
testAtomicTransaction(restaurantSeats, theatreSeats, theatreArea, bookTaxi);
}
else if ("BusinessActivity".equals(txType))
{
testBusinessActivity(restaurantSeats, theatreSeats, theatreArea, bookTaxi);
}
else
{
result = "Unknown transaction type " + txType;
}
}
catch (final TransactionRolledBackException tre)
{
result = "Transaction rolled back" ;
System.out.println("Transaction rolled back") ;
}
catch (Exception e)
{
result = "Transaction failed! Cause: " + e.toString();
System.out.println("CLIENT: problem: ");
e.printStackTrace(System.out);
}
request.setAttribute("result", result);
context.getRequestDispatcher("/index.jsp").forward(request, response);
}
/**
* Run a simple transaction involving three Web Services.
* Use the Atomic Transaction type.
* <p/>
* Note: due to the implementation of the transaction infrastructure,
* this method must be invoked with a web application container. It will
* not run correctly in a standalone java application.
*
* @throws Exception for any unexpected errors, such as a failure to commit.
*/
private void testAtomicTransaction(int restaurantSeats, int theatreSeats, int theatreArea, boolean bookTaxi) throws Exception
{
System.out.println("CLIENT: obtaining userTransaction...");
UserTransaction ut = UserTransactionFactory.userTransaction();
System.out.println("CLIENT: starting the transaction...");
ut.begin();
System.out.println("CLIENT: transaction ID= " + ut.toString());
System.out.println("CLIENT: calling business Web Services...");
restaurantAT.bookSeats(restaurantSeats);
theatreAT.bookSeats(theatreSeats, theatreArea);
if (bookTaxi)
{
taxiAT.bookTaxi();
}
System.out.println("CLIENT: calling commit on the transaction...");
ut.commit();
System.out.println("done.");
System.out.flush();
}
/**
* Run a simple transaction involving three Web Services.
* Use the Business Activity type.
* <p/>
* Note: due to the implementation of the transaction infrastructure,
* this method must be invoked with a web application container. It will
* not run correctly in a standalone java application.
*
* @throws Exception for any unexpected errors, such as a failure to commit.
*/
private void testBusinessActivity(int restaurantSeats, int theatreSeats, int theatreArea, boolean bookTaxi) throws Exception
{
System.out.println("CLIENT: obtaining userBusinessActivity...");
UserBusinessActivity uba = UserBusinessActivityFactory.userBusinessActivity();
System.out.println("CLIENT: starting the transaction...");
uba.begin();
System.out.println("CLIENT: transaction ID= " + uba.toString());
System.out.println("CLIENT: calling business Web Services...");
boolean isOK = false ;
try
{
if (restaurantBA.bookSeats(restaurantSeats) && theatreBA.bookSeats(theatreSeats, theatreArea))
{
isOK = !bookTaxi || taxiBA.bookTaxi() ;
}
}
catch (final Throwable th)
{
System.out.println("CLIENT: caught exception processing bookings, cancelling (" + th.getMessage() + ")") ;
}
if (isOK)
{
System.out.println("CLIENT: all OK");
System.out.println("CLIENT: calling close on the transaction...");
uba.close();
}
else
{
System.out.println("CLIENT: one or more services failed, calling cancel.");
uba.cancel();
}
System.out.println("CLIENT: done.");
System.out.flush();
}
/**
* @param config The servlet config
* @param property The property name
* @param defautlValue The default value.
* @return The initialisation property value or the default value if not present.
*/
private String getURL(final ServletConfig config, final String property, final String defaultValue)
{
// allow command line override via system property
String value = System.getProperty(property);
if (value == null) {
value = config.getInitParameter(property) ;
}
return (value == null ? defaultValue : value) ;
}
/**
* Get the service proxy for the specified service endpoing.
* @param jndiName The JNDI location of the service.
* @param url The URL of the service.
* @param portClass The port class type.
* @throws NamingException For errors accessing JNDI.
* @throws ServiceException For errors creating proxy.
* @return The stub for the service endpoint.
*/
private Stub getService(final String jndiName, final String url, final Class portClass)
throws NamingException, ServiceException
{
final InitialContext ic = new InitialContext() ;
final Service service = (Service)ic.lookup(jndiName) ;
final Stub stub = (Stub)service.getPort(portClass) ;
stub._setProperty(Stub.ENDPOINT_ADDRESS_PROPERTY, url) ;
return stub ;
}
}