/*
* Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
*
* The Apache Software License, Version 1.1
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Caucho Technology (http://www.caucho.com/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "Burlap", "Resin", and "Caucho" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* info@caucho.com.
*
* 5. Products derived from this software may not be called "Resin"
* nor may "Resin" appear in their names without prior written
* permission of Caucho Technology.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @author Scott Ferguson
*/
package com.caucho.burlap.server;
import com.caucho.burlap.io.BurlapInput;
import com.caucho.burlap.io.BurlapOutput;
import com.caucho.services.server.Service;
import com.caucho.services.server.ServiceContext;
import javax.servlet.GenericServlet;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
/**
* Servlet for serving Burlap services.
*/
public class BurlapServlet extends GenericServlet {
private Class<?> _apiClass;
private Object _service;
private BurlapSkeleton _skeleton;
public String getServletInfo()
{
return "Burlap Servlet";
}
/**
* Sets the service class.
*/
public void setService(Object service)
{
_service = service;
}
/**
* Sets the api-class.
*/
public void setAPIClass(Class<?> apiClass)
{
_apiClass = apiClass;
}
/**
* Initialize the service, including the service object.
*/
public void init(ServletConfig config)
throws ServletException
{
super.init(config);
try {
if (_service == null) {
String className = getInitParameter("service-class");
Class<?> serviceClass = null;
if (className != null) {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
if (loader != null)
serviceClass = Class.forName(className, false, loader);
else
serviceClass = Class.forName(className);
}
else {
if (getClass().equals(BurlapServlet.class))
throw new ServletException("server must extend BurlapServlet");
serviceClass = getClass();
}
_service = serviceClass.newInstance();
if (_service instanceof BurlapServlet)
((BurlapServlet) _service).setService(this);
if (_service instanceof Service)
((Service) _service).init(getServletConfig());
else if (_service instanceof Servlet)
((Servlet) _service).init(getServletConfig());
}
if (_apiClass == null) {
String className = getInitParameter("api-class");
if (className != null) {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
if (loader != null)
_apiClass = Class.forName(className, false, loader);
else
_apiClass = Class.forName(className);
}
else
_apiClass = _service.getClass();
}
_skeleton = new BurlapSkeleton(_service, _apiClass);
} catch (ServletException e) {
throw e;
} catch (Exception e) {
throw new ServletException(e);
}
}
/**
* Execute a request. The path-info of the request selects the bean.
* Once the bean's selected, it will be applied.
*/
public void service(ServletRequest request, ServletResponse response)
throws IOException, ServletException
{
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
if (! req.getMethod().equals("POST")) {
res.setStatus(500, "Burlap Requires POST");
PrintWriter out = res.getWriter();
res.setContentType("text/html");
out.println("<h1>Burlap Requires POST</h1>");
return;
}
String serviceId = req.getPathInfo();
String objectId = req.getParameter("id");
if (objectId == null)
objectId = req.getParameter("ejbid");
ServiceContext.begin(req, serviceId, objectId);
try {
InputStream is = request.getInputStream();
OutputStream os = response.getOutputStream();
BurlapInput in = new BurlapInput(is);
BurlapOutput out = new BurlapOutput(os);
_skeleton.invoke(in, out);
} catch (RuntimeException e) {
throw e;
} catch (ServletException e) {
throw e;
} catch (Throwable e) {
throw new ServletException(e);
} finally {
ServiceContext.end();
}
}
}