/*
* Copyright 2010-2011, CloudBees Inc.
*
* 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.cloudbees.vietnam4j;
import org.mortbay.jetty.HttpConnection;
import org.mortbay.jetty.LocalConnector;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.webapp.WebAppContext;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import static org.mortbay.jetty.Handler.*;
/**
* Encapsulates a proxy web application.
*
* @author Kohsuke Kawaguchi
*/
public class ProxiedWebApplication {
private final File war;
private final String contextPath;
private Server server;
private WebAppContext webApp;
/**
* Creates a proxied web application.
*
* @param war
* Either a web application archive or an exploded web application.
* @param contextPath
* {@linkplain ServletContext#getContextPath() context path} of the deployed web application.
*/
public ProxiedWebApplication(File war, String contextPath) {
this.war = war;
this.contextPath = contextPath;
}
/**
* Starts the proxied web application.
*/
public void start() throws Exception {
server = new Server();
webApp = new WebAppContext(war.getPath(),contextPath);
server.setHandler(webApp);
server.start();
}
/**
* Stops the proxied web application.
*/
public void stop() throws Exception {
if (server!=null)
server.stop();
server=null;
}
/**
* Dispatches a request.
*/
public void handleRequest(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
// needed to fake Jetty
HttpConnection2 hc = new HttpConnection2();
HttpConnection old = hc.set(hc);
request = new HttpServletRequestWrapper(request) {
public ServletContext getServletContext() {
return webApp.getServletContext();
}
};
try {
webApp.getServletHandler().handle("/", request, response, REQUEST);
} finally {
hc.set(old);
}
}
/**
* A hack to work around the restrictive access of {@link HttpConnection#setCurrentConnection(HttpConnection)}
*/
private class HttpConnection2 extends HttpConnection {
HttpConnection2() {
// some random value just to avoid NPE
super(new LocalConnector(),null,server);
}
public HttpConnection set(HttpConnection v) {
HttpConnection old = HttpConnection.getCurrentConnection();
HttpConnection.setCurrentConnection(v);
return old;
}
}
@Override
public String toString() {
return super.toString()+"["+war+"]";
}
}