1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the 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 public class FactorialServerPipelineFactory implements
30 ChannelPipelineFactory {
31
32 public ChannelPipeline getPipeline() throws Exception {
33 ChannelPipeline pipeline = pipeline();
34
35 // Enable stream compression (you can remove these two if unnecessary)
36 pipeline.addLast("deflater", new ZlibEncoder(ZlibWrapper.GZIP));
37 pipeline.addLast("inflater", new ZlibDecoder(ZlibWrapper.GZIP));
38
39 // Add the number codec first,
40 pipeline.addLast("decoder", new BigIntegerDecoder());
41 pipeline.addLast("encoder", new NumberEncoder());
42
43 // and then business logic.
44 // Please note we create a handler for every new channel
45 // because it has stateful properties.
46 pipeline.addLast("handler", new FactorialServerHandler());
47
48 return pipeline;
49 }
50 }