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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  package org.apache.mina.core.nio.tcp;
21  
22  import io.netty.bootstrap.Bootstrap;
23  import io.netty.buffer.ByteBuf;
24  import io.netty.channel.ChannelHandlerContext;
25  import io.netty.channel.ChannelInboundHandlerAdapter;
26  import io.netty.channel.ChannelInitializer;
27  import io.netty.channel.ChannelOption;
28  import io.netty.channel.EventLoopGroup;
29  import io.netty.channel.nio.NioEventLoopGroup;
30  import io.netty.channel.socket.SocketChannel;
31  import io.netty.channel.socket.nio.NioSocketChannel;
32  
33  import java.io.IOException;
34  import java.net.InetSocketAddress;
35  import java.util.concurrent.CountDownLatch;
36  
37  import org.apache.mina.core.BenchmarkClient;
38  
39  /**
40   * A Netty 3 TCP CLient.
41   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
42   */
43  public class Netty4TcpBenchmarkClient implements BenchmarkClient {
44  
45      private EventLoopGroup group = new NioEventLoopGroup();
46    
47      /**
48       * 
49       */
50      public Netty4TcpBenchmarkClient() {
51      }
52  
53      /**
54       * {@inheritedDoc}
55       */
56      public void start(final int port, final CountDownLatch counter, final byte[] data) throws IOException {
57          Bootstrap bootstrap = new Bootstrap();
58          bootstrap.group(group);
59          bootstrap.option(ChannelOption.SO_SNDBUF, 64 * 1024);
60          bootstrap.option(ChannelOption.TCP_NODELAY, true);
61          bootstrap.channel(NioSocketChannel.class);
62          bootstrap.handler(new ChannelInitializer<SocketChannel>() {
63  
64              @Override
65              protected void initChannel(SocketChannel ch) throws Exception {
66                  ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {
67                      private void sendMessage(ChannelHandlerContext ctx, byte[] data) {
68                          ByteBuf buf = ctx.alloc().buffer(data.length);
69                          buf.writeBytes(data);
70                          ctx.writeAndFlush(buf);
71                      }
72  
73                      @Override
74                      public void channelRead(ChannelHandlerContext ctx, Object message) throws Exception {
75                          ByteBuf buf = (ByteBuf)message;
76                          for(int i=0; i < buf.readableBytes();i++) {
77                              counter.countDown();
78                              if (counter.getCount() > 0) {
79                                  sendMessage(ctx, data);
80                              } else {
81                                  ctx.channel().close();
82                              }
83                          }
84                          buf.release();
85                      }
86  
87                      @Override
88                      public void channelActive(ChannelHandlerContext ctx) throws Exception {
89                        sendMessage(ctx, data);
90                      }
91                  });
92              }
93  
94              @Override
95              public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
96                  cause.printStackTrace();
97                  ctx.close();
98              }
99          });
100         bootstrap.connect(new InetSocketAddress(port));
101     }
102 
103     /**
104      * {@inheritedDoc}
105      */
106     public void stop() throws IOException {
107         group.shutdownGracefully();
108     }
109 }