ba28679775
Motivation:
The examples have not been updated since long time ago, showing various
issues fixed in this commit.
Modifications:
- Overall simplification to reduce LoC
- Use system properties to get options instead of parsing args.
- Minimize option validation
- Just use System.out/err instead of Logger
- Do not pass config as parameters - just access it directly
- Move the main logic to main(String[]) instead of creating a new
instance meaninglessly
- Update netty-build-21 to make checkstyle not complain
- Remove 'throws Exception' clause if possible
- Line wrap at 120 (previously at 80)
- Add an option to enable SSL for most examples
- Use ChannelFuture.sync() instead of await()
- Use System.out for the actual result. Use System.err otherwise.
- Delete examples that are not very useful:
- websocket/html5
- websocketx/sslserver
- localecho/multithreaded
- Add run-example.sh which simplifies launching an example from command
line
Result:
Shorter and simpler examples. A user can focus more on what it actually
does than miscellaneous stuff. A user can launch an example very
easily.
60 lines
2.1 KiB
Java
60 lines
2.1 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package org.jboss.netty.example.factorial;
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import org.jboss.netty.channel.ChannelPipeline;
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import org.jboss.netty.channel.ChannelPipelineFactory;
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import org.jboss.netty.handler.codec.compression.ZlibDecoder;
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import org.jboss.netty.handler.codec.compression.ZlibEncoder;
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import org.jboss.netty.handler.codec.compression.ZlibWrapper;
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import org.jboss.netty.handler.ssl.SslContext;
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import static org.jboss.netty.channel.Channels.*;
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/**
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* Creates a newly configured {@link ChannelPipeline} for a client-side channel.
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*/
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public class FactorialClientPipelineFactory implements ChannelPipelineFactory {
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private final SslContext sslCtx;
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public FactorialClientPipelineFactory(SslContext sslCtx) {
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this.sslCtx = sslCtx;
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}
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public ChannelPipeline getPipeline() {
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ChannelPipeline pipeline = pipeline();
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// Enabls SSL if necessary.
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if (sslCtx != null) {
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pipeline.addLast("ssl", sslCtx.newHandler(FactorialClient.HOST, FactorialClient.PORT));
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}
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// Enable stream compression (you can remove these two if unnecessary)
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pipeline.addLast("deflater", new ZlibEncoder(ZlibWrapper.GZIP));
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pipeline.addLast("inflater", new ZlibDecoder(ZlibWrapper.GZIP));
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// Add the number codec first,
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pipeline.addLast("decoder", new BigIntegerDecoder());
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pipeline.addLast("encoder", new NumberEncoder());
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// and then business logic.
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pipeline.addLast("handler", new FactorialClientHandler());
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return pipeline;
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}
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}
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