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//
// ========================================================================
// Copyright (c) 1995-2021 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// 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 java.io.IOException;
import javax.servlet.AsyncContext;
import javax.servlet.AsyncEvent;
import javax.servlet.AsyncListener;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.eclipse.jetty.server.handler.ContextHandler;
public class AsyncContextState implements AsyncContext
{
private final HttpChannel _channel;
volatile HttpChannelState _state;
public AsyncContextState(HttpChannelState state)
{
_state = state;
_channel = _state.getHttpChannel();
}
public HttpChannel getHttpChannel()
{
return _channel;
}
HttpChannelState state()
{
HttpChannelState state = _state;
if (state == null)
throw new IllegalStateException("AsyncContext completed and/or Request lifecycle recycled");
return state;
}
@Override
public void addListener(final AsyncListener listener, final ServletRequest request, final ServletResponse response)
{
AsyncListener wrap = new WrappedAsyncListener(listener, request, response);
state().addListener(wrap);
}
@Override
public void addListener(AsyncListener listener)
{
state().addListener(listener);
}
@Override
public void complete()
{
state().complete();
}
@Override
public T createListener(Class clazz) throws ServletException
{
ContextHandler contextHandler = state().getContextHandler();
if (contextHandler != null)
return contextHandler.getServletContext().createListener(clazz);
try
{
return clazz.getDeclaredConstructor().newInstance();
}
catch (Exception e)
{
throw new ServletException(e);
}
}
@Override
public void dispatch()
{
state().dispatch(null, null);
}
@Override
public void dispatch(String path)
{
state().dispatch(null, path);
}
@Override
public void dispatch(ServletContext context, String path)
{
state().dispatch(context, path);
}
@Override
public ServletRequest getRequest()
{
return state().getAsyncContextEvent().getSuppliedRequest();
}
@Override
public ServletResponse getResponse()
{
return state().getAsyncContextEvent().getSuppliedResponse();
}
@Override
public long getTimeout()
{
return state().getTimeout();
}
@Override
public boolean hasOriginalRequestAndResponse()
{
HttpChannel channel = state().getHttpChannel();
return channel.getRequest() == getRequest() && channel.getResponse() == getResponse();
}
@Override
public void setTimeout(long arg0)
{
state().setTimeout(arg0);
}
@Override
public void start(final Runnable task)
{
final HttpChannel channel = state().getHttpChannel();
channel.execute(new Runnable()
{
@Override
public void run()
{
ContextHandler.Context context = state().getAsyncContextEvent().getContext();
if (context == null)
task.run();
else
context.getContextHandler().handle(channel.getRequest(), task);
}
});
}
public void reset()
{
_state = null;
}
public HttpChannelState getHttpChannelState()
{
return state();
}
public static class WrappedAsyncListener implements AsyncListener
{
private final AsyncListener _listener;
private final ServletRequest _request;
private final ServletResponse _response;
public WrappedAsyncListener(AsyncListener listener, ServletRequest request, ServletResponse response)
{
_listener = listener;
_request = request;
_response = response;
}
public AsyncListener getListener()
{
return _listener;
}
@Override
public void onTimeout(AsyncEvent event) throws IOException
{
_listener.onTimeout(new AsyncEvent(event.getAsyncContext(), _request, _response, event.getThrowable()));
}
@Override
public void onStartAsync(AsyncEvent event) throws IOException
{
_listener.onStartAsync(new AsyncEvent(event.getAsyncContext(), _request, _response, event.getThrowable()));
}
@Override
public void onError(AsyncEvent event) throws IOException
{
_listener.onError(new AsyncEvent(event.getAsyncContext(), _request, _response, event.getThrowable()));
}
@Override
public void onComplete(AsyncEvent event) throws IOException
{
_listener.onComplete(new AsyncEvent(event.getAsyncContext(), _request, _response, event.getThrowable()));
}
}
}