com.hotels.styx.server.netty.handlers.RequestTimeoutHandler Maven / Gradle / Ivy
/*
Copyright (C) 2013-2018 Expedia Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.hotels.styx.server.netty.handlers;
import com.hotels.styx.server.RequestTimeoutException;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.LastHttpContent;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;
/**
* Sends a 408 Request Timeout response if a request times out.
*
*/
public class RequestTimeoutHandler extends ChannelInboundHandlerAdapter {
private boolean requestOngoing;
private Object msg;
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
if (msg instanceof HttpRequest && ((HttpRequest) msg).getDecoderResult().isSuccess()) {
requestOngoing = true;
this.msg = msg;
} else if (msg instanceof LastHttpContent) {
requestOngoing = false;
}
super.channelRead(ctx, msg);
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent) {
IdleStateEvent e = (IdleStateEvent) evt;
if (e.state() == IdleState.READER_IDLE && requestOngoing) {
throw new RequestTimeoutException("message=" + String.valueOf(msg));
}
}
super.userEventTriggered(ctx, evt);
}
}