com.thomas.netty4.SimpleEchoClientProducerHandler.java Source code

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Here is the source code for com.thomas.netty4.SimpleEchoClientProducerHandler.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.thomas.netty4;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * Handler implementation for the echo client.  It initiates the ping-pong
 * traffic between the echo client and server by sending the first message to
 * the server.
 */
public class SimpleEchoClientProducerHandler extends ChannelInboundHandlerAdapter {
    public static Map<Integer, Integer> messages = new HashMap<Integer, Integer>();
    public static long begin = System.currentTimeMillis();
    public static long last = System.currentTimeMillis();
    public static long response = 0;
    private ByteBuf firstMessage;

    public ByteBuf genMessage() {
        firstMessage = Unpooled.buffer(SimpleEchoClient.SIZE);
        for (int i = 0; i < firstMessage.capacity(); i++) {
            firstMessage.writeByte((byte) i);
        }
        return firstMessage;
    }

    /**
     * Creates a client-side handler.
     */
    public SimpleEchoClientProducerHandler() {
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) {
        //ctx.writeAndFlush(firstMessage);
        (new Thread(new Hello(ctx.channel()))).start();
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        //ctx.write(msg);
        //int port = ((InetSocketAddress)ctx.channel().localAddress()).getPort();
        //        Integer number = messages.get(port);
        //        if(number != null) {
        //           messages.put(port, number ++);
        //        }
        response++;
        long current = System.currentTimeMillis();
        if (current - last > 1000) {
            last = current;
            String print = String.format("%1s sec %2s response", (current - begin) / 1000, response);
            System.out.println(print);
        }

        //System.out.println("receipt:" + String.valueOf(msg));
        //TODO statistic
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        ctx.flush();
    }

    @Override
    public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
        super.channelUnregistered(ctx);
        System.out.println("writability unregistered");
    }

    @Override
    public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
        super.channelWritabilityChanged(ctx);
        System.out.println("writability changed");
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        super.channelInactive(ctx);
        System.out.println("writability inactive");
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        // Close the connection when an exception is raised.
        cause.printStackTrace();
        ctx.close();
    }

    class Hello implements Runnable {
        private Channel channel;

        public Hello(Channel channel) {
            this.channel = channel;
        }

        @Override
        public void run() {
            while (true) {
                String dateStr = DateFormatUtils.format(new Date(), "hh:mm:ss:SSS");
                String message = String.format("producer : %1s", dateStr);
                ByteBuf buf = Unpooled.wrappedBuffer(message.getBytes());
                channel.writeAndFlush(Unpooled.copiedBuffer(buf));
                System.out.println(new String(Unpooled.copiedBuffer(buf).array(), CharsetUtil.UTF_8));
                try {
                    Thread.sleep(1000L);
                } catch (Exception e) {
                    //do nothing
                }
            }
        }
    };
}