package org.jboss.resteasy.plugins.server.servlet;
import org.jboss.resteasy.core.Dispatcher;
import org.jboss.resteasy.core.SynchronousDispatcher;
import org.jboss.resteasy.core.ThreadLocalResteasyProviderFactory;
import org.jboss.resteasy.specimpl.UriInfoImpl;
import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.spi.HttpResponse;
import org.jboss.resteasy.spi.Registry;
import org.jboss.resteasy.spi.ResteasyDeployment;
import org.jboss.resteasy.spi.ResteasyProviderFactory;
import org.jboss.resteasy.util.GetRestful;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.ws.rs.core.Application;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.SecurityContext;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.util.ArrayList;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class HttpServletDispatcher extends HttpServlet
{
protected Dispatcher dispatcher;
protected ResteasyProviderFactory providerFactory;
private final static Logger logger = LoggerFactory.getLogger(HttpServletDispatcher.class);
private String servletMappingPrefix = "";
protected ResteasyDeployment deployment = null;
public Dispatcher getDispatcher()
{
return dispatcher;
}
public void init(ServletConfig servletConfig) throws ServletException
{
super.init(servletConfig);
providerFactory = (ResteasyProviderFactory) servletConfig.getServletContext().getAttribute(ResteasyProviderFactory.class.getName());
dispatcher = (Dispatcher) servletConfig.getServletContext().getAttribute(Dispatcher.class.getName());
if ((providerFactory != null && dispatcher == null) || (providerFactory == null && dispatcher != null))
{
throw new ServletException("Unknown state. You have a Listener messing up what resteasy expects");
}
ServletBootstrap bootstrap = new ServletBootstrap(servletConfig);
// We haven't been initialized by a Listener already
if (providerFactory == null)
{
deployment = bootstrap.createDeployment();
deployment.start();
ServletContext servletContext = servletConfig.getServletContext();
servletContext.setAttribute(ResteasyProviderFactory.class.getName(), deployment.getProviderFactory());
servletContext.setAttribute(Dispatcher.class.getName(), deployment.getDispatcher());
servletContext.setAttribute(Registry.class.getName(), deployment.getRegistry());
dispatcher = deployment.getDispatcher();
providerFactory = deployment.getProviderFactory();
}
else
{
String application = servletConfig.getInitParameter("javax.ws.rs.Application");
if (application != null)
{
try
{
Application app = (Application) Thread.currentThread().getContextClassLoader().loadClass(application.trim()).newInstance();
processApplication(app);
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
}
servletMappingPrefix = bootstrap.getParameter("resteasy.servlet.mapping.prefix");
if (servletMappingPrefix == null) servletMappingPrefix = "";
servletMappingPrefix = servletMappingPrefix.trim();
dispatcher.getDefaultContextObjects().put(ServletConfig.class, servletConfig);
dispatcher.getDefaultContextObjects().put(ServletContext.class, servletConfig.getServletContext());
}
protected void processApplication(Application config)
{
logger.info("Deploying " + Application.class.getName() + ": " + config.getClass());
ArrayList<Class> actualResourceClasses = new ArrayList<Class>();
ArrayList<Class> actualProviderClasses = new ArrayList<Class>();
ArrayList resources = new ArrayList();
ArrayList providers = new ArrayList();
if (config.getClasses() != null)
{
for (Class clazz : config.getClasses())
{
if (GetRestful.isRootResource(clazz))
{
actualResourceClasses.add(clazz);
}
else if (clazz.isAnnotationPresent(Provider.class))
{
actualProviderClasses.add(clazz);
}
else
{
throw new RuntimeException("Application.getClasses() returned unknown class type: " + clazz.getName());
}
}
}
if (config.getSingletons() != null)
{
for (Object obj : config.getSingletons())
{
if (GetRestful.isRootResource(obj.getClass()))
{
logger.info("Adding singleton resource " + obj.getClass().getName() + " from Application " + Application.class.getName());
resources.add(obj);
}
else if (obj.getClass().isAnnotationPresent(Provider.class))
{
providers.add(obj);
}
else
{
throw new RuntimeException("Application.getSingletons() returned unknown class type: " + obj.getClass().getName());
}
}
}
for (Class clazz : actualProviderClasses) providerFactory.registerProvider(clazz);
for (Object obj : providers) providerFactory.registerProviderInstance(obj);
for (Class clazz : actualResourceClasses) dispatcher.getRegistry().addPerRequestResource(clazz);
for (Object obj : providers) dispatcher.getRegistry().addSingletonResource(obj);
}
public void setDispatcher(Dispatcher dispatcher)
{
this.dispatcher = dispatcher;
}
protected void service(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws ServletException, IOException
{
service(httpServletRequest.getMethod(), httpServletRequest, httpServletResponse);
}
public void service(String httpMethod, HttpServletRequest request, HttpServletResponse response) throws IOException
{
try
{
//logger.info("***PATH: " + request.getRequestURL());
// classloader/deployment aware RestasyProviderFactory. Used to have request specific
// ResteasyProviderFactory.getInstance()
ResteasyProviderFactory defaultInstance = ResteasyProviderFactory.getInstance();
if (defaultInstance instanceof ThreadLocalResteasyProviderFactory)
{
ThreadLocalResteasyProviderFactory.push(providerFactory);
}
HttpHeaders headers = null;
UriInfoImpl uriInfo = null;
try
{
headers = ServletUtil.extractHttpHeaders(request);
uriInfo = ServletUtil.extractUriInfo(request, servletMappingPrefix);
}
catch (Exception e)
{
response.sendError(HttpServletResponse.SC_BAD_REQUEST);
// made it warn so that people can filter this.
logger.warn("Failed to parse request.", e);
}
HttpResponse theResponse = createServletResponse(response);
HttpRequest in = createHttpRequest(httpMethod, request, headers, uriInfo, theResponse);
try
{
ResteasyProviderFactory.pushContext(HttpServletRequest.class, request);
ResteasyProviderFactory.pushContext(HttpServletResponse.class, response);
/*
try
{
// embedded TJWS and Jetty might not have these things initialized
ServletConfig config1 = getServletConfig();
ResteasyProviderFactory.pushContext(ServletConfig.class, config1);
}
catch (Exception ignored)
{
}
try
{
// embedded TJWS and Jetty might not have these things initialized
ServletContext servletContext = getServletContext();
ResteasyProviderFactory.pushContext(ServletContext.class, servletContext);
}
catch (Exception ignored)
{
}
*/
ResteasyProviderFactory.pushContext(SecurityContext.class, new ServletSecurityContext(request));
dispatcher.invoke(in, theResponse);
}
finally
{
ResteasyProviderFactory.clearContextData();
}
}
finally
{
ResteasyProviderFactory defaultInstance = ResteasyProviderFactory.getInstance();
if (defaultInstance instanceof ThreadLocalResteasyProviderFactory)
{
ThreadLocalResteasyProviderFactory.pop();
}
}
}
protected HttpRequest createHttpRequest(String httpMethod, HttpServletRequest request, HttpHeaders headers, UriInfoImpl uriInfo, HttpResponse theResponse)
{
return new HttpServletInputMessage(request, theResponse, headers, uriInfo, httpMethod.toUpperCase(), (SynchronousDispatcher) dispatcher);
}
protected HttpResponse createServletResponse(HttpServletResponse response)
{
return new HttpServletResponseWrapper(response, this.dispatcher.getProviderFactory());
}
}