package org.jboss.resteasy.plugins.server.netty;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.TooLongFrameException;
import io.netty.handler.codec.http.DefaultHttpResponse;
import io.netty.handler.codec.http.HttpResponse;
import org.jboss.resteasy.logging.Logger;
import org.jboss.resteasy.spi.Failure;
import static io.netty.handler.codec.http.HttpResponseStatus.CONTINUE;
import static io.netty.handler.codec.http.HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE;
import static io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
/**
* {@link SimpleChannelInboundHandler} which handles the requests and dispatch them.
*
* This class is {@link Sharable}.
*
* @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
* @author Andy Taylor (andy.taylor@jboss.org)
* @author <a href="http://gleamynode.net/">Trustin Lee</a>
* @author Norman Maurer
* @version $Rev: 2368 $, $Date: 2010-10-18 17:19:03 +0900 (Mon, 18 Oct 2010) $
*/
@Sharable
public class RequestHandler extends SimpleChannelInboundHandler
{
protected final RequestDispatcher dispatcher;
private final static Logger logger = Logger.getLogger(RequestHandler.class);
public RequestHandler(RequestDispatcher dispatcher)
{
this.dispatcher = dispatcher;
}
@Override
protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception
{
if (msg instanceof NettyHttpRequest) {
NettyHttpRequest request = (NettyHttpRequest) msg;
if (request.is100ContinueExpected())
{
send100Continue(ctx);
}
NettyHttpResponse response = request.getResponse();
try
{
dispatcher.service(ctx, request, response, true);
}
catch (Failure e1)
{
response.reset();
response.setStatus(e1.getErrorCode());
}
catch (Exception ex)
{
response.reset();
response.setStatus(500);
logger.error("Unexpected", ex);
}
if (!request.getAsyncContext().isSuspended()) {
response.finish();
}
}
}
private void send100Continue(ChannelHandlerContext ctx)
{
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, CONTINUE);
ctx.writeAndFlush(response);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable e)
throws Exception
{
// handle the case of to big requests.
if (e.getCause() instanceof TooLongFrameException)
{
DefaultHttpResponse response = new DefaultHttpResponse(HTTP_1_1, REQUEST_ENTITY_TOO_LARGE);
ctx.write(response).addListener(ChannelFutureListener.CLOSE);
}
else
{
e.getCause().printStackTrace();
ctx.close();
}
}
}