AsyncContextDispatchWithQueryStrings.java

package org.eclipse.jetty.servlet;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.jetty.continuation.Continuation;
import org.eclipse.jetty.continuation.ContinuationSupport;
import org.eclipse.jetty.server.AsyncContinuation;
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.LocalConnector;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.HandlerList;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * This tests verifies that merging of queryStrings works when dispatching
 * Requests via {@link Continuation} multiple times.
 * 
 * @author tbecker
 * 
 */
public class AsyncContextDispatchWithQueryStrings {

	private Server _server = new Server();
	private ServletContextHandler _contextHandler = new ServletContextHandler(ServletContextHandler.NO_SESSIONS);
	private LocalConnector _connector = new LocalConnector();

	@Before
	public void setUp() throws Exception {
		_connector.setMaxIdleTime(30000);
		_server.setConnectors(new Connector[] { _connector });

		_contextHandler.setContextPath("/");
		_contextHandler.addServlet(new ServletHolder(new TestServlet()), "/initialCall");
		_contextHandler.addServlet(new ServletHolder(new TestServlet()), "/firstDispatchWithNewQueryString");
		_contextHandler.addServlet(new ServletHolder(new TestServlet()), "/secondDispatchNewValueForExistingQueryString");

		HandlerList handlers = new HandlerList();
		handlers.setHandlers(new Handler[] { _contextHandler, new DefaultHandler() });

		_server.setHandler(handlers);
		_server.start();
	}

	@Test
	public void testMultipleDispatchesWithNewQueryStrings() throws Exception {
		String request = "GET /initialCall?initialParam=right HTTP/1.1\r\n" + "Host: localhost\r\n" + "Content-Type: application/x-www-form-urlencoded\r\n"
				+ "Connection: close\r\n" + "\r\n";
		String responseString = _connector.getResponses(request);
		assertTrue("Not the expected response. Check STDOUT for details.", responseString.startsWith("HTTP/1.1 200"));
	}

	@After
	public void tearDown() throws Exception {
		_server.stop();
		_server.join();
	}

	private class TestServlet extends HttpServlet {
		private static final long serialVersionUID = 1L;

		protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
			String path = request.getRequestURI();
			String queryString = request.getQueryString();
			if ("/initialCall".equals(path)) {
				AsyncContinuation continuation = (AsyncContinuation) ContinuationSupport.getContinuation(request);
				continuation.suspend();
				continuation.dispatch("/firstDispatchWithNewQueryString?newQueryString=initialValue");
				assertEquals("initialParam=right", queryString);
			} else if ("/firstDispatchWithNewQueryString".equals(path)) {
				AsyncContinuation continuation = (AsyncContinuation) ContinuationSupport.getContinuation(request);
				continuation.suspend();
				continuation.dispatch("/secondDispatchNewValueForExistingQueryString?newQueryString=newValue");
				assertEquals("newQueryString=initialValue&initialParam=right", queryString);
			} else {
				response.setContentType("text/html");
				response.setStatus(HttpServletResponse.SC_OK);
				response.getWriter().println("<h1>woohhooooo</h1>");
				assertEquals("newQueryString=newValue&initialParam=right", queryString);
			}
		}
	}
}