1 /*
2 * Copyright 2009 Red Hat, Inc.
3 *
4 * Red Hat licenses this file to you under the Apache License, version 2.0
5 * (the "License"); you may not use this file except in compliance with the
6 * License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.example.factorial;
17
18 import static org.jboss.netty.channel.Channels.*;
19
20 import org.jboss.netty.channel.ChannelPipeline;
21 import org.jboss.netty.channel.ChannelPipelineFactory;
22 import org.jboss.netty.handler.codec.compression.ZlibDecoder;
23 import org.jboss.netty.handler.codec.compression.ZlibEncoder;
24 import org.jboss.netty.handler.codec.compression.ZlibWrapper;
25
26 /**
27 * Creates a newly configured {@link ChannelPipeline} for a server-side channel.
28 *
29 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
30 * @author <a href="http://gleamynode.net/">Trustin Lee</a>
31 *
32 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
33 *
34 */
35 public class FactorialServerPipelineFactory implements
36 ChannelPipelineFactory {
37
38 public ChannelPipeline getPipeline() throws Exception {
39 ChannelPipeline pipeline = pipeline();
40
41 // Enable stream compression (you can remove these two if unnecessary)
42 pipeline.addLast("deflater", new ZlibEncoder(ZlibWrapper.GZIP));
43 pipeline.addLast("inflater", new ZlibDecoder(ZlibWrapper.GZIP));
44
45 // Add the number codec first,
46 pipeline.addLast("decoder", new BigIntegerDecoder());
47 pipeline.addLast("encoder", new NumberEncoder());
48
49 // and then business logic.
50 // Please note we create a handler for every new channel
51 // because it has stateful properties.
52 pipeline.addLast("handler", new FactorialServerHandler());
53
54 return pipeline;
55 }
56 }