//
//  ========================================================================
//  Copyright (c) 1995-2014 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.handler;

import java.io.IOException;

import javax.servlet.AsyncEvent;
import javax.servlet.AsyncListener;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.jetty.io.EndPoint;
import org.eclipse.jetty.server.AbstractHttpConnection;
import org.eclipse.jetty.server.Request;

/**
 * Handler to adjust the idle timeout of requests while dispatched.
 * 
 * <p>Can be applied in jetty.xml with
 * <pre>
 *   &lt;Get id='handler' name='Handler'/>
 *   &lt;Set name='Handler'>
 *     &lt;New id='idleTimeoutHandler' class='org.eclipse.jetty.server.handler.IdleTimeoutHandler'>
 *       &lt;Set name='Handler'>&lt;Ref id='handler'/>&lt;/Set>
 *       &lt;Set name='IdleTimeoutMs'>5000&lt;/Set>
 *     &lt;/New>
 *   &lt;/Set>
 * </pre>
 */
public class IdleTimeoutHandler extends HandlerWrapper
{
	private int _idleTimeoutMs = 1000;
	private boolean _applyToAsync = false;
	
	
	public boolean isApplyToAsync()
	{
		return _applyToAsync;
	}

	/**
	 * Should the adjusted idle time be maintained for asynchronous requests
	 * @param applyToAsync true if alternate idle timeout is applied to asynchronous requests
	 */
	public void setApplyToAsync(boolean applyToAsync)
	{
		_applyToAsync = applyToAsync;
	}

	public long getIdleTimeoutMs()
	{
		return _idleTimeoutMs;
	}

	/**
	 * @param idleTimeoutMs The idle timeout in MS to apply while dispatched or async
	 */
	public void setIdleTimeoutMs(int _idleTimeoutMs)
	{
		this._idleTimeoutMs = _idleTimeoutMs;
	}
	
   
	@Override
	public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
	{
		AbstractHttpConnection connection = AbstractHttpConnection.getCurrentConnection();
		final EndPoint endp = connection==null?null:connection.getEndPoint();
		
		final int idle_timeout;
		if (endp==null)
			idle_timeout=-1;
		else
		{
			idle_timeout=endp.getMaxIdleTime();
			endp.setMaxIdleTime(_idleTimeoutMs);
		}
		
		try
		{
			super.handle(target,baseRequest,request,response);
		}
		finally
		{
			if (endp!=null)
			{
				endp.setMaxIdleTime(idle_timeout);
			}
		}
	}
}