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//
// ========================================================================
// Copyright (c) 1995-2015 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.DispatcherType;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.util.annotation.ManagedObject;
import org.eclipse.jetty.util.component.ContainerLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/* ------------------------------------------------------------ */
/** AbstractHandler.
*/
@ManagedObject("Jetty Handler")
public abstract class AbstractHandler extends ContainerLifeCycle implements Handler
{
private static final Logger LOG = Log.getLogger(AbstractHandler.class);
private Server _server;
/* ------------------------------------------------------------ */
/**
*
*/
public AbstractHandler()
{
}
@Override
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
if (baseRequest.getDispatcherType()==DispatcherType.ERROR)
doError(target,baseRequest,request,response);
else
doHandle(target,baseRequest,request,response);
}
/* ------------------------------------------------------------ */
protected void doHandle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
}
/* ------------------------------------------------------------ */
protected void doError(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
Object o = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
int code = (o instanceof Integer)?((Integer)o).intValue():(o!=null?Integer.valueOf(o.toString()):500);
o = request.getAttribute(RequestDispatcher.ERROR_MESSAGE);
String reason = o!=null?o.toString():null;
response.sendError(code,reason);
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.thread.LifeCycle#start()
*/
@Override
protected void doStart() throws Exception
{
if (LOG.isDebugEnabled())
LOG.debug("starting {}",this);
if (_server==null)
LOG.warn("No Server set for {}",this);
super.doStart();
}
/* ------------------------------------------------------------ */
/*
* @see org.eclipse.thread.LifeCycle#stop()
*/
@Override
protected void doStop() throws Exception
{
if (LOG.isDebugEnabled())
LOG.debug("stopping {}",this);
super.doStop();
}
/* ------------------------------------------------------------ */
@Override
public void setServer(Server server)
{
if (_server==server)
return;
if (isStarted())
throw new IllegalStateException(STARTED);
_server=server;
}
/* ------------------------------------------------------------ */
@Override
public Server getServer()
{
return _server;
}
/* ------------------------------------------------------------ */
@Override
public void destroy()
{
if (!isStopped())
throw new IllegalStateException("!STOPPED");
super.destroy();
}
/* ------------------------------------------------------------ */
@Override
public void dumpThis(Appendable out) throws IOException
{
out.append(toString()).append(" - ").append(getState()).append('\n');
}
}
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