com.qq.servlet.demo.netty.telnet.TelnetClientHandler.java Source code

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Here is the source code for com.qq.servlet.demo.netty.telnet.TelnetClientHandler.java

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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.qq.servlet.demo.netty.telnet;

import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.Attribute;
import io.netty.util.AttributeKey;

import java.io.PrintWriter;

import javax.servlet.AsyncContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Handles a client-side channel.
 */
@Sharable
public class TelnetClientHandler extends SimpleChannelInboundHandler<String> {

    @Override
    protected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
        Channel ch = ctx.channel();
        AttributeKey<AsyncContext> key = AttributeKey.valueOf("ASYNC_CONTEXT");
        Attribute<AsyncContext> attr = ch.attr(key);
        AsyncContext context = attr.get();

        if (context != null) {
            HttpServletRequest request = (HttpServletRequest) context.getRequest();
            HttpServletResponse response = (HttpServletResponse) context.getResponse();
            Object object = request.getAttribute("beginTime");
            long bt = Long.parseLong(object.toString());
            PrintWriter writer = response.getWriter();
            writer.println("invoke api result: \t");
            long time = System.currentTimeMillis() - bt;
            //         writer.println("???"+time);
            writer.flush();
            //servlet?http?
            System.err.println(context + "\t" + request.getAttribute("REQUEST_ID"));
            context.complete();
        } else {
            System.out.println(context + "----------->" + msg);
        }
        ChannelFuture future = ch.close();
        future.await(100);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}