//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.server;
  
  
  import javax.servlet.AsyncContext;
  import javax.servlet.AsyncEvent;
  import javax.servlet.RequestDispatcher;
  import javax.servlet.ServletContext;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  
  import org.eclipse.jetty.server.handler.ContextHandler.Context;
  import org.eclipse.jetty.util.thread.Scheduler;
  
  public class AsyncContextEvent extends AsyncEvent implements Runnable
  {
      final private Context _context;
      final private AsyncContextState _asyncContext;
      private volatile HttpChannelState _state;
      private ServletContext _dispatchContext;
      private String _dispatchPath;
      private volatile Scheduler.Task _timeoutTask;
      private Throwable _throwable;
  
      public AsyncContextEvent(Context context,AsyncContextState asyncContext, HttpChannelState state, Request baseRequest, ServletRequest request, ServletResponse response)
      {
          super(null,request,response,null);
          _context=context;
          _asyncContext=asyncContext;
          _state=state;
  
          // If we haven't been async dispatched before
          if (baseRequest.getAttribute(AsyncContext.ASYNC_REQUEST_URI)==null)
          {
              // We are setting these attributes during startAsync, when the spec implies that
              // they are only available after a call to AsyncContext.dispatch(...);
  
              // have we been forwarded before?
              String uri=(String)baseRequest.getAttribute(RequestDispatcher.FORWARD_REQUEST_URI);
              if (uri!=null)
              {
                  baseRequest.setAttribute(AsyncContext.ASYNC_REQUEST_URI,uri);
                  baseRequest.setAttribute(AsyncContext.ASYNC_CONTEXT_PATH,baseRequest.getAttribute(RequestDispatcher.FORWARD_CONTEXT_PATH));
                  baseRequest.setAttribute(AsyncContext.ASYNC_SERVLET_PATH,baseRequest.getAttribute(RequestDispatcher.FORWARD_SERVLET_PATH));
                  baseRequest.setAttribute(AsyncContext.ASYNC_PATH_INFO,baseRequest.getAttribute(RequestDispatcher.FORWARD_PATH_INFO));
                  baseRequest.setAttribute(AsyncContext.ASYNC_QUERY_STRING,baseRequest.getAttribute(RequestDispatcher.FORWARD_QUERY_STRING));
              }
              else
              {
                  baseRequest.setAttribute(AsyncContext.ASYNC_REQUEST_URI,baseRequest.getRequestURI());
                  baseRequest.setAttribute(AsyncContext.ASYNC_CONTEXT_PATH,baseRequest.getContextPath());
                  baseRequest.setAttribute(AsyncContext.ASYNC_SERVLET_PATH,baseRequest.getServletPath());
                  baseRequest.setAttribute(AsyncContext.ASYNC_PATH_INFO,baseRequest.getPathInfo());
                  baseRequest.setAttribute(AsyncContext.ASYNC_QUERY_STRING,baseRequest.getQueryString());
              }
          }
      }
  
      public ServletContext getSuspendedContext()
      {
          return _context;
      }
  
      public Context getContext()
      {
          return _context;
      }
  
      public ServletContext getDispatchContext()
      {
          return _dispatchContext;
      }
  
      public ServletContext getServletContext()
      {
          return _dispatchContext==null?_context:_dispatchContext;
      }
  
      /**
       * @return The path in the context
       */
      public String getPath()
     {
         return _dispatchPath;
     }
 
     public void setTimeoutTask(Scheduler.Task task)
     {
         _timeoutTask = task;
     }
 
     public void cancelTimeoutTask()
     {
         Scheduler.Task task=_timeoutTask;
         _timeoutTask=null;
         if (task!=null)
             task.cancel();
     }
 
     @Override
     public AsyncContext getAsyncContext()
     {
         return _asyncContext;
     }
 
     @Override
     public Throwable getThrowable()
     {
         return _throwable;
     }
 
 //    public void setThrowable(Throwable throwable)
 //    {
 //        _throwable=throwable;
 //    }
 
     public void setDispatchContext(ServletContext context)
     {
         _dispatchContext=context;
     }
 
     public void setDispatchPath(String path)
     {
         _dispatchPath=path;
     }
 
     public void completed()
     {
         _timeoutTask=null;
         _asyncContext.reset();
     }
 
     public HttpChannelState getHttpChannelState()
     {
         return _state;
     }
 
     @Override
     public void run()
     {
         Scheduler.Task task=_timeoutTask;
         _timeoutTask=null;
         if (task!=null)
             _state.onTimeout();
     }
 
     public void addThrowable(Throwable e)
     {
         if (_throwable==null)
             _throwable=e;
         else
             _throwable.addSuppressed(e);
     }
 
 }